CN212868336U

CN212868336U - Rack and pinion synchronous motion slide rail

Info

Publication number: CN212868336U
Application number: CN202021785221.1U
Authority: CN
Inventors: 戴国平; 陆波; 梁志发; 司彤
Original assignee: Wuxi Jingmei Precise Slide Co ltd
Current assignee: Wuxi Jingmei Precise Slide Co ltd
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2021-04-02
Anticipated expiration: 2030-08-24

Abstract

The utility model relates to a rack and pinion synchronous motion slide rail, which comprises an upper rail, a middle rail and a lower rail; the upper rail can slide relative to the middle rail; the middle rail can slide relative to the lower rail; a transmission rack is fixed on the slide rail; the transmission rack comprises an upper transmission rack and a lower transmission rack; the upper transmission rack is fixed on the upper rail through a fixing device; the lower transmission rack is fixed on the lower rail through a fixing device; a rotatable gear is fixed on the middle rail; the upper transmission rack is meshed with the gear; the lower transmission rack is meshed with the gear. The utility model discloses not only make the upper rail, well rail, the lower rail can carry out synchronous motion, has eliminated the collision between the slide rail, has effectively reduced the collision sound that the slide rail sent when pulling out and closed motion in addition, greatly increased the effective life of slide rail moreover.

Description

Rack and pinion synchronous motion slide rail

Technical Field

The utility model relates to a slide rail, concretely relates to rack and pinion synchronous motion slide rail.

Background

In the prior art, a triple sliding rail generally comprises an upper rail, a middle rail and a lower rail, when the triple sliding rail is pulled open and closed, the upper rail is pulled firstly, when the upper rail is pulled to the end, the middle rail is driven, the lower rail is further driven, and a pulling part is pulled open. Therefore, in such a pulling manner, a collision sound occurs between the upper rail and the middle rail, and between the middle rail and the lower rail, which brings an unpleasant use feeling to a user.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model discloses a rack and pinion synchronous motion slide rail.

The utility model discloses the technical scheme who adopts as follows:

a rack and pinion synchronous motion slide rail comprises an upper rail, a middle rail and a lower rail; the upper rail can slide relative to the middle rail; the middle rail can slide relative to the lower rail; a transmission rack is fixed on the slide rail; the transmission rack comprises an upper transmission rack and a lower transmission rack; the upper transmission rack is fixed on the upper rail through a fixing device; the lower transmission rack is fixed on the lower rail through a fixing device; a rotatable gear is fixed on the middle rail; the upper transmission rack is meshed with the gear; the lower transmission rack is meshed with the gear.

The further technical scheme is as follows: the fixing device comprises a rack hanging hole and a track hook; the transmission rack is provided with a rack hanging hole; track hooks are arranged on the side surfaces of the upper track and the lower track; the track hook penetrates through the rack hanging hole and deforms to fix the transmission rack.

The further technical scheme is as follows: the fixing device comprises a first rack bump and a track gap; the first rack bump is arranged at the first end part of the transmission rack; the first end parts of the upper rail and the lower rail are both provided with rail notches; the first rack bump is clamped in the track gap to fix the transmission rack.

The further technical scheme is as follows: the first rack bump is in a dovetail shape, is connected to the side face of the transmission rack through a connecting block and is higher than the side face of the transmission rack, and is unfolded along the direction perpendicular to the sliding direction of the track.

The further technical scheme is as follows: a second rack bump is arranged on the transmission rack; track grooves are formed in the side faces of the upper track and the lower track along the track sliding direction; and the second rack bump is placed in the track groove to position the transmission rack.

The further technical scheme is as follows: a self-locking structure is fixed on the slide rail through a fixing device; the self-locking structure comprises a self-locking shifting block and a self-locking assembly; the fixing device of the self-locking shifting block comprises a shifting block hook arranged at the second end part of the upper rail and a shifting block opening arranged on the side wall of the self-locking shifting block; the shifting block hook penetrates through the shifting block opening and deforms to fix the self-locking shifting block; the fixing device of the self-locking assembly comprises an assembly notch arranged at the second end part of the lower rail, an assembly hook arranged at the side surface of the lower rail close to the second end part, an assembly convex block arranged at the end part of the self-locking assembly and an assembly opening arranged on the side wall of the self-locking assembly; the assembly projection is embedded into the assembly notch, and meanwhile, the assembly hook extends into the assembly opening to deform so as to fix the self-locking assembly.

The further technical scheme is as follows: bead strips are arranged between the upper rail and the middle rail and between the lower rail and the middle rail; and balls are arranged in the ball mounting positions of the bead strips.

The further technical scheme is as follows: and an end stop block for stopping the rail from slipping is fixed at the second end part of the upper rail.

The further technical scheme is as follows: the gear is rotatably fixed on the middle rail through a rivet.

The utility model has the advantages as follows:

the utility model discloses installed the gear additional on the slide rail, go up after improvement devices such as transmission rack and lower transmission rack, go up through gear and transmission rack meshing between rail and the well rail, also through gear and transmission rack meshing between lower rail and the well rail, not only make the upper rail, well rail, the lower rail can carry out synchronous motion, the collision between the slide rail has been eliminated, the collision sound that the slide rail sent when pulling out and closed motion has effectively been reduced in addition, and greatly increased the effective life of slide rail.

The utility model discloses in, through fixing device fixed transmission rack such as track breach, first rack lug, track couple and rack hanging hole, this kind of mode of installation part is simple reliable.

And the self-locking structure is also arranged on the sliding rail and is fixed on the sliding rail through fixing devices such as an opening, a hook and the like. The self-locking structure enables the sliding rail to be closed slowly and lightly when the sliding rail is closed.

Drawings

Fig. 1 is a schematic view of a closed state of a slide rail according to an embodiment of the present invention.

Fig. 2 is a schematic view of the upper drive rack of fig. 1.

Fig. 3 is a schematic view of the lower drive rack of fig. 1.

Fig. 4 is a schematic view of the upper rail of fig. 1.

Fig. 5 is a schematic view of the lower rail of fig. 1.

Fig. 6 is a schematic view illustrating the slide rail shown in fig. 1 in an extended state.

Fig. 7 is an exploded view of the slide rail shown in fig. 1.

In the figure: 1. rail mounting; 2. a middle rail; 3. a lower rail; 4. uploading a transmission rack; 5. a lower drive rack; 6. a gear; 7. a rack hanging hole; 8. a rail hook; 9. a first rack projection; 10. a rail gap; 11. a second rack projection; 12. a track groove; 13. a self-locking shifting block; 14. a self-locking assembly; 15. bead strips; 16. an end stop; 17. fixing the hanging plate; 18. and (4) riveting.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

Fig. 1 is a schematic view of a closed state of a slide rail according to an embodiment of the present invention. As shown in fig. 1, the slide rail includes an upper rail 1, a middle rail 2, and a lower rail 3. The upper rail 1 is slidable relative to the middle rail 2. The middle rail 2 is slidable relative to the lower rail 3. A transmission rack is fixed on the slide rail. The transmission rack comprises an upper transmission rack 4 fixed on the upper rail 1 and a lower transmission rack 5 fixed on the lower rail 3. A gear 6 is fixed to the middle rail 2. The upper transmission rack 4 is meshed with the gear 6. The lower transmission rack 5 is meshed with the gear 6. The upper transmission rack 4 and the lower transmission rack 5 are parallel to each other, and the tooth-shaped structures of the upper transmission rack 4 and the lower transmission rack 5 are opposite. The gear 6 is located between the upper and

lower drive racks

4, 5.

Wherein, the upper transmission rack 4 is fixed on the upper rail 1, and the lower transmission rack 5 is fixed on the lower rail 3, which are all fixed by a fixing device. The position between the upper transmission rack 4 and the upper rail 1, and the position between the lower transmission rack 5 and the lower rail 3 are positioned by the positioning structure. The fixing device is a hanging hole and a hook. Furthermore, the fixing device may also comprise a notch at the end of the rail and a projection provided for snapping into the notch. Embodiments of the fixation device and positioning structure are detailed below.

Fig. 2 is a schematic view of the lower drive rack of fig. 1. Fig. 2 shows the opposite side of the lower drive rack 5 to the side abutting the lower rail 3. As shown in fig. 2, two rack hanging holes 7 are formed in the lower transmission rack 5, and the rack hanging holes are respectively formed in the lower transmission rack 5 at a position close to the second end portion and a position close to the middle portion of the lower transmission rack 5, and the rack hanging holes are formed in the lower transmission rack 5 and penetrate through the lower transmission rack 5 from the side surface of the lower transmission rack 5. A first rack cam 9 is provided at a first end of the lower transmission rack 5. The rack hanging holes 7 can be opened in a plurality according to the requirement.

Further, the first rack projection 9 is dovetail-shaped, is connected to the side surface of the lower transmission rack 5 by a connecting block, is higher than the side surface of the lower transmission rack 5, and is unfolded up and down along the direction perpendicular to the sliding direction of the rail.

Fig. 3 is a schematic view of the upper drive rack of fig. 1. Fig. 3 shows a side of the upper transmission rack 4 abutting against the upper rail 1. A rack hanging hole 7 is also formed in the position, close to the second end, of the upper transmission rack 4 and the position, close to the middle, of the upper transmission rack 4, and a first rack bump 9 is arranged at the position, close to the first end, of the upper transmission rack 4. In addition, it can also be seen that the upper transmission rack 4 is provided with a second rack cam 11 on the side of the upper transmission rack 4 abutting against the upper rail 1. The second rack protrusion 11 is a square protrusion protruding from the side surface of the upper rail 1. In fig. 3, the rack hanging holes are respectively arranged at the sides of the two rack hanging holes 7. It will be appreciated that a second rack cam 11 is also provided on the lower drive rack 5.

Fig. 4 is a schematic view of the upper rail of fig. 1. As shown in fig. 4, a rail notch 10 is formed at a first end of the upper rail 1. The rail gap 10 penetrates the end face of the first end of the upper rail 1. Corresponding to the position of the first rack cam 9 above the upper transmission rack 4. The side surface of the upper rail 1 is provided with a rail groove 12 along the rail sliding direction. Two track hooks 8 are arranged on the track groove 12. The rail hook 8 may be a metal tongue integrally connected to the upper rail 1. When the upper transmission rack 4 is fixed on the upper rail 1, the second rack bump 11 is firstly brought into the track groove 12, the upper transmission rack 4 is positioned, and then the upper transmission rack 4 is fixed through a fixing device consisting of the track gap 10, the first rack bump 9, the track hook 8 and the rack hanging hole 7. The first rack bump 9 is plugged into the track gap 10 of the upper rail 1 from the end face of the first end part of the upper rail 1 and clamped through the dovetail-shaped structure of the first rack bump 9, then the two track hooks 8 are respectively inserted into the two rack hanging holes 7, and the track hooks 8 are deformed and firmly pressed to fix the upper transmission rack 4. In practice, the rail hook 8 and the rack hanging hole 7 can be matched, installed and fixed only.

An end stop 16 is fixed at the second end of the upper rail 1 to prevent the middle rail 2 from falling off during sliding.

Fig. 5 is a schematic view of the lower rail of fig. 1. Similar to the upper rail 1, the first end of the lower rail 3 is also provided with a rail notch 10. The lower rail 3 is provided with a rail groove 12 in the rail sliding direction. Two track hooks 8 are arranged on the track groove 12. When the lower transmission rack 5 is fixed on the lower rail 3, the second rack bump 11 is firstly brought into the track groove 12, the lower transmission rack 5 is positioned, and then the lower transmission rack is fixed through a fixing device consisting of the track gap 10, the first rack bump 9, the track hook 8 and the rack hanging hole 7. The first rack convex block 9 is plugged into the track gap 10 of the lower rail 3 from the end face of the first end part of the lower rail 3 and clamped through the dovetail-shaped structure of the first rack convex block 9, then the two track hooks 8 are respectively inserted into the two rack hanging holes 7, and the track hooks 8 are deformed and firmly pressed to fix the lower transmission rack 5. In practice, the rail hook 8 and the rack hanging hole 7 can be matched, installed and fixed only.

The lower rail 3 is fixed on the horizontal plate of the L-shaped fixed hanging plate 17. The vertical plate of the L-shaped fixing hanging plate 17 is fixed to the mounting plate to fix the slide rail. The mounting plate may be part of a piece of furniture or a household appliance.

Fig. 6 is a schematic view illustrating the slide rail shown in fig. 1 in an extended state. As shown in fig. 6, when the sliding rail is pulled open, the upper transmission rack 4 of the upper rail 1 is meshed with the gear 6 on the middle rail 2, and the gear 6 on the middle rail 2 is meshed with the lower transmission rack 5 on the lower rail 3, in the moving process of the sliding rail, because the upper transmission rack 4 and the lower transmission rack 5 are fixed, the upper rail 1 is pulled out to move so as to drive the middle rail 2 to move synchronously, thereby eliminating the collision noise between the upper rail 1 and the middle rail 2, and greatly prolonging the effective service life of the sliding rail.

Fig. 7 is an exploded view of the slide rail shown in fig. 1. As shown in fig. 7, the gear 6 is fixed to the middle rail 2 by a rivet 18. The gear 6 is free to rotate about the rivet 18.

Furthermore, a self-locking structure is also arranged on the slide rail. The self-locking structure comprises a self-locking shifting block 13 and a self-locking assembly 14. The self-locking shifting block 13 is fixed at the position of the upper rail 1 close to the second end part and is fixed on the opposite side of the transmission rack 4. The self-locking assembly 14 is fixed on the lower rail 3 at the opposite side of the fixed lower transmission rack 5, and is specifically positioned in the gap between the lower rail 3 and the vertical plate of the fixed hanging plate 17. A rotating block is slidably arranged in the self-locking assembly 14, and a spring is connected between the rotating block and the self-locking assembly 14. When the upper rail 1 is pulled, the self-locking shifting block 13 moves along with the upper rail 1, and the self-locking shifting block 13 is clamped in the groove above the rotating block, so that the rotating block can be driven to move along the horizontal section of the sliding track of the self-locking assembly 14 until the rotating block moves to the sagging section of the tail end of the sliding track of the self-locking assembly 14, and the rotating block rotates at the sagging section to release the rotating block. When the upper rail 1 is pushed back, the self-locking shifting block 13 enters the groove above the rotating block, so that the rotating block rotates to enter the horizontal section from the drooping section, the spring pulls back the rotating block, and the self-locking shifting block 13 and the upper rail 1 are driven to be pulled back. The self-locking structure can ensure that the sliding rail can be slowly and lightly closed when being closed.

Referring to fig. 4, 5 and 7, before the upper transmission rack 4 is fixed, two small shifting block hooks near the second end of the upper rail 1 penetrate into shifting block openings on the side wall of the self-locking shifting block 13, and the hooks are deformed and press-riveted to fix the self-locking shifting block 13. And the self-locking assembly 14 is fixed in a gap between the side surface of the lower rail 3 and the vertical plate of the fixed hanging plate 17. Specifically, the second end of lower rail 3 is provided with the subassembly breach equally, and is provided with the subassembly couple in one side of lower rail 3 towards fixed link plate 17, during the subassembly lug embedding subassembly breach of 14 tip of auto-lock subassembly, simultaneously, the subassembly couple stretches into the subassembly opening of 14 lateral walls of auto-lock subassembly, and the subassembly couple takes place to deform in order to fix auto-lock subassembly 14.

It can be seen that the drive rack is fixed to the upper rail 1 or the lower rail 3 by means of a fixing device. The fixing device is a track hook 8 and a rack hanging hole 7 which are installed in a matching way. For a more secure fastening, the fastening device may also be added with the first rack projection 9 and the track indentation 10 that are fitted to each other. Similarly, the self-locking shifting block 13 and the self-locking assembly 14 are respectively fixed on the upper rail 1 and the lower rail 3 through fixing devices. For the self-locking shifting block 13, the fixing device, namely, the shifting block hook and the shifting block opening, are installed in a matched mode, and for the self-locking assembly 14, the fixing device is installed in a matched mode for the assembly hook and the assembly opening, and further matched installation of an assembly convex block and an assembly notch is combined. The way of mounting the parts is thus simple and reliable.

As can be seen again from fig. 7, beads 15 are mounted between the upper rail 1 and the middle rail 2, and between the lower rail 3 and the middle rail 2. Balls are mounted in the ball mounting positions of the beads 15. The sliding rail is used for enabling the upper rail 1 and the middle rail 2 to slide more smoothly and enabling the middle rail 2 and the lower rail 3 to slide more smoothly in the sliding process of the sliding rail.

The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made without departing from the basic structure of the invention.

Claims

1. The utility model provides a rack and pinion synchronous motion slide rail which characterized in that: the sliding rail comprises an upper rail (1), a middle rail (2) and a lower rail (3); the upper rail (1) can slide relative to the middle rail (2); the middle rail (2) can slide relative to the lower rail (3); a transmission rack is fixed on the slide rail; the transmission rack comprises an upper transmission rack (4) and a lower transmission rack (5); the upper transmission rack (4) is fixed on the upper rail (1) through a fixing device; the lower transmission rack (5) is fixed on the lower rail (3) through a fixing device; a rotatable gear (6) is fixed on the middle rail (2); the upper transmission rack (4) is meshed with the gear (6); the lower transmission rack (5) is meshed with the gear (6).

2. The rack and pinion synchronous motion slide of claim 1, wherein: the fixing device comprises a rack hanging hole (7) and a track hook (8); a rack hanging hole (7) is formed in the transmission rack; track hooks (8) are arranged on the side surfaces of the upper track (1) and the lower track (3); the track hook (8) penetrates through the rack hanging hole (7) and deforms to fix the transmission rack.

3. The rack and pinion synchronous motion slide of claim 2, wherein: the fixing device comprises a first rack bump (9) and a track gap (10); the first rack bump (9) is arranged at the first end part of the transmission rack; the first end parts of the upper rail (1) and the lower rail (3) are both provided with rail notches (10); the first rack bump (9) is clamped in the track gap (10) to fix the transmission rack.

4. The rack and pinion synchronous motion slide of claim 3, wherein: the first rack bump (9) is in a dovetail shape, is connected to the side face of the transmission rack through a connecting block and is higher than the side face of the transmission rack, and is unfolded along the direction perpendicular to the sliding direction of the track.

5. The rack and pinion synchronous motion slide of claim 1, wherein: a second rack bump (11) is arranged on the transmission rack; track grooves (12) are formed in the side surfaces of the upper track (1) and the lower track (3) along the track sliding direction; the second rack projection (11) is placed in the track groove (12) to position the transmission rack.

6. The rack and pinion synchronous motion slide of claim 1, wherein: a self-locking structure is fixed on the slide rail through a fixing device; the self-locking structure comprises a self-locking shifting block (13) and a self-locking assembly (14); the fixing device of the self-locking shifting block (13) comprises a shifting block hook arranged at the second end part of the upper rail (1) and a shifting block opening arranged on the side wall of the self-locking shifting block (13); the shifting block hook penetrates through the shifting block opening and deforms to fix the self-locking shifting block (13); the fixing device of the self-locking assembly (14) comprises an assembly notch arranged at the second end part of the lower rail (3), an assembly hook arranged at the side surface of the lower rail (3) close to the second end part, an assembly convex block arranged at the end part of the self-locking assembly (14) and an assembly opening arranged on the side wall of the self-locking assembly (14); the assembly projections are embedded in the assembly notches and the assembly hooks extend into the assembly openings to deform to secure the self-locking assembly (14).

7. The rack and pinion synchronous motion slide of claim 1, wherein: bead strips (15) are arranged between the upper rail (1) and the middle rail (2) and between the lower rail (3) and the middle rail (2); balls are arranged in the ball mounting positions of the bead strips (15).

8. The rack and pinion synchronous motion slide of claim 1, wherein: an end stop (16) for stopping the rail from slipping is fixed at the second end of the upper rail (1).

9. The rack and pinion synchronous motion slide of claim 1, wherein: the gear (6) is rotatably fixed on the middle rail (2) through a rivet (18).