CN214284054U

CN214284054U - Blocking piece structure of mute three-section rail

Info

Publication number: CN214284054U
Application number: CN202023305645.6U
Authority: CN
Inventors: 廖天明
Original assignee: Guangdong Kolity Home Hardware Co ltd
Current assignee: Guangdong Kolity Home Hardware Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-09-28
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a fender structure of silence three section rail, the front end of its movable rail is formed with the limiting plate, the front end of well rail is equipped with well rail end cover, the front end of well rail end cover is formed with the buffering frame portion that is used for buffering the limiting plate, buffering frame portion includes first flexure strip and second flexure strip, the middle part of first flexure strip is connected as an organic wholely with the middle part of second flexure strip, well rail end cover encloses with first flexure strip and second flexure strip and is equipped with the cushion chamber, the rear end of well rail end cover is formed with the buffering projection that is used for buffering second ball frame, the buffering projection is formed with the inclined plane that is used for with the preceding end face contact of second ball frame, well rail is formed with the mounting hole, well rail end cover is formed with the boss, well rail end cover is formed with the clip, the boss adaptation is arranged in the mounting hole, the edge lock joint of clip and mounting hole. The utility model discloses a fender piece structure of silence three section rail is favorable to reducing the noise and alleviates vibrations, the utility model discloses a rear end housing, well rail end cover and front end housing are fixed reliable.

Description

Blocking piece structure of mute three-section rail

Technical Field

The utility model relates to a buffer structure field of three section rail, concretely relates to fender piece structure of silence three section rail.

Background

At present, in order to make the drawer greatly pulled out, the left and right sides of some drawers are connected with the inner wall installation of the cabinet body through three sections of rails. The three-section rail is mainly provided with a fixed rail, a middle rail and a movable rail, the fixed rail is fixedly connected with the inner wall of the cabinet body through screws, the movable rail is fixedly connected with the outer side surface of the drawer through screws, the main body of the fixed rail is in a groove shape, the middle rail is in sliding connection with the fixed rail through corresponding balls, the middle rail is also in a groove shape, the movable rail is in sliding connection with the middle rail through corresponding balls, the movable rail is arranged in the middle rail, and the middle rail is arranged in the fixed rail. When people forcibly close the drawer by hands, the three-section rails retract, the internal structures of the three-section rails collide with each other for limiting, larger noise and vibration can be generated, and improvement is needed.

Disclosure of Invention

An object of the utility model is to overcome prior art not enough, provide a fender piece structure of silence three section rail, it is favorable to reducing the noise and alleviates vibrations.

The purpose of the utility model is realized by the following technical scheme.

The utility model discloses a blocking piece structure of mute three-section rail, which comprises a fixed rail, a middle rail, a movable rail, a first ball frame and a second ball frame, wherein the middle rail is connected with the fixed rail through the first ball frame in a sliding way, the movable rail is connected with the middle rail through the second ball frame in a sliding way, the front end of the fixed rail is provided with a front end cover, the rear end of the fixed rail is provided with a rear end cover, wherein, the front end of the movable rail is provided with a limiting plate, the front end of the middle rail is provided with a middle rail end cover, the front end of the middle rail end cover is provided with a buffer frame part for buffering the limiting plate, the buffer frame part comprises a first elastic sheet and a second elastic sheet, the middle part of the first elastic sheet is connected with the middle part of the second elastic sheet into a whole, the middle rail end cover, the first elastic sheet and the second elastic sheet enclose a buffer cavity, the rear end of the middle rail end cover is provided with a buffer convex column for buffering the second ball frame, the buffering projection is formed with and is used for with the inclined plane of the preceding terminal surface contact of second ball frame, well rail is formed with the mounting hole, well rail end cover is formed with the boss, well rail end cover is formed with the clip, the boss adaptation is arranged in the mounting hole, the clip with the edge lock joint of mounting hole.

Preferably, the rear end cover is provided with a concave cavity, a buffer block for buffering the rear end face of the middle rail is formed in the concave cavity, fins are formed in the concave cavity, and the rear end of the buffer block and the inner wall of the concave cavity are connected into a whole through the fins.

Preferably, the buffer block is provided with a long hole, the rear end of the fixed rail is provided with a positioning plate, the positioning plate is perpendicular to the fixed rail, and the positioning plate is inserted into the long hole in a matching manner.

Preferably, the rear end cover is provided with a positioning column, the fixed rail is provided with a first positioning hole, and the positioning column is in adaptive connection with the first positioning hole.

Preferably, the rear end cover is formed with an outer wall, the cavity is arranged in the outer wall, and the outer wall is in fit, abutting and connection with the inner wall of the rear end part of the fixed rail.

Preferably, the mounting hole is provided as a rectangular hole.

Preferably, a square positioning block is formed on the front end cover, a second positioning hole is formed on the fixed rail, and the positioning block is connected with the second positioning hole in an adaptive manner.

Compared with the prior art, the utility model, its beneficial effect is: the limiting plate is formed at the front end of the movable rail, the middle rail end cover is arranged at the front end of the middle rail, the buffer frame part used for buffering the limiting plate is formed at the front end of the middle rail end cover and comprises a first elastic sheet and a second elastic sheet, the middle part of the first elastic sheet is connected with the middle part of the second elastic sheet into a whole, a buffer cavity is defined by the middle rail end cover, the first elastic sheet and the second elastic sheet, a buffer convex column used for buffering the second ball frame is formed at the rear end of the middle rail end cover, and an inclined plane used for being in contact with the front end face of the second ball frame is formed on the buffer convex column, so that when the drawer is closed, the buffer frame part plays a buffer role in the movable rail, vibration is reduced, and noise generated by collision is reduced; because the buffering convex column can buffer the second ball frame, the vibration can be reduced, and the noise caused by collision can be reduced.

Drawings

Fig. 1 is a schematic structural view of the three-section rail of the present invention in a retraction state.

Fig. 2 is a schematic perspective view of the extended state of the three-section rail of the present invention.

Fig. 3 is an exploded view of the three-section rail of the present invention.

Fig. 4 is a schematic view of the three-section rail of the present invention after hiding the movable rail and the limiting hook.

Fig. 5 is a partial structural view of a portion a of fig. 4.

Fig. 6 is a partial structural view at B of fig. 4.

Fig. 7 is a schematic view of the back side direction of the middle rail end cover and the middle rail combination according to the present invention.

Fig. 8 is an exploded view of the middle rail end cover and the middle rail of the present invention.

Fig. 9 is a schematic view of a three-dimensional structure of the combination of the fixed rail, the first ball frame, the front end cover and the rear end cover of the present invention.

Fig. 10 is a partial structural view at C of fig. 9.

Fig. 11 is a schematic front perspective view of the rear end cap according to the present invention.

Fig. 12 is a schematic perspective view of the back surface of the rear end cap according to the present invention.

Fig. 13 is a schematic front perspective view of the front end cap of the present invention.

Fig. 14 is a schematic perspective view of the back surface of the front end cover according to the present invention.

Fig. 15 is a schematic front perspective view of the middle rail end cover according to the present invention.

Fig. 16 is a front view of the middle rail end cover according to the present invention.

Description of reference numerals: 1-a fixed rail; 11-a positioning plate; 101-a first locating hole; 102-a second positioning hole; 1021-steel sheet; 2-middle rail; 201-mounting holes; 3, a movable rail; 31-a limiting plate; 4-a first ball cage; 5-a second ball rack; 6-front end cover; 61-a positioning block; 7-rear end cap; 70-a cavity; 71-outer wall; 72-a buffer block; 721-long holes; 73-ribs; 74-a locating post; 8-middle rail end cover; 81-clasps; 82-a buffer frame part; 821-a first elastic sheet; 822-a second elastic sheet; 823-buffer chamber; 83-buffer convex column; 8301-inclined plane; 84-a boss; 9-limiting hook member.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The utility model discloses a fender piece structure of three section rails, as shown in fig. 1 to 3, including fixed rail 1, well rail 2, movable rail 3, first ball frame 4 and second ball frame 5, first ball frame 4 is total two, and it has corresponding steel ball to inlay in first ball frame 4, and second ball frame 5 establishes to the trough-shaped structure, and the upper portion and the lower part of second ball frame 5 respectively inlay and have corresponding steel ball. As shown in fig. 2 and 3, the fixed rail 1 is sleeved outside the middle rail 2, and the two first ball racks 4 are respectively arranged between the fixed rail 1 and the middle rail 2; well rail 2 cover is outside second ball frame 5, and second ball frame 5 covers outside movable rail 3, that is to say, the ball of second ball frame 5 is located between well rail 2 and the movable rail 3, and then, well rail 2 and fixed rail 1 are through first ball frame 4 sliding connection, and movable rail 3 passes through second ball frame 5 sliding connection with well rail 2. As shown in fig. 3 to 6, the front end of the fixed rail 1 is provided with a front end cover 6, and it should be noted that the "front end" refers to one end of the fixed rail 1 relatively close to the human body in a state that the three-section rail is installed in the cabinet for use. The rear end of the fixed rail 1 is provided with a rear end cover 7, and the material of the front end cover 6 and the rear end cover 7 can be plastic or rubber with elasticity in the prior art, such as TPU (thermoplastic polyurethane). When the three-section rail falls down accidentally during transportation or assembly, the front end cover 6 and the rear end cover 7 both play a role in protecting the three-section rail. The above description is prior art.

As shown in fig. 3, the utility model discloses a front end of movable rail 3 is formed with limiting plate 31, limiting plate 31 specifically is through bending the formation on the sheet metal structure's of movable rail 3 basis, as shown in fig. 3 to 5, the front end of well rail 2 is equipped with well rail end cover 8, as shown in fig. 15, the front end of well rail end cover 8 is formed with buffer frame portion 82 that is used for buffering limiting plate 31, that is to say, limiting plate 31 contracts to the in-process of the minimum state at the three-section rail, buffer frame portion 82 can be touch to limiting plate 31, also can understand does, buffer frame portion 82 is spacing on the direction that contracts to limiting plate 31 and movable rail 3. As shown in fig. 15, the buffer frame part 82 includes a first elastic piece 821 and a second elastic piece 822, and a middle part of the first elastic piece 821 and a middle part of the second elastic piece 822 are integrally connected, that is, the material of the middle rail end cover 8 is also plastic or rubber having elasticity in the prior art, such as TPU (thermoplastic polyurethane). The middle rail end cover 8, the first elastic piece 821 and the second elastic piece 822 are surrounded by a buffer cavity 823, a buffer convex column 83 for buffering the second ball rack 5 is formed at the rear end of the middle rail end cover 8, as shown in fig. 15 and 16, the buffer convex column 83 is formed with an inclined plane 8301 for contacting with the front end surface of the second ball rack 5, specifically, two buffer convex columns 83 are provided, and the buffer convex columns 83 are arranged in a vertically symmetrical manner. Fig. 5 schematically shows the state of the inclined surface 8301 of the second ball frame 5 contacting with the front end surface, and in the actual use process, after the drawer is opened and closed for many times, the second ball frame 5 and the movable rail 3 can be relatively displaced in the telescopic direction of the movable rail 3, and only when the drawer is quickly opened, the second ball frame 5 is driven by the rolling friction force with the movable rail 3 to move forward to the position contacting with the inclined surface 8301, so that the inclined surface 8301 has a limiting effect on the second ball frame 5.

In the process that the drawer is closed by the hand, the three rails retract, the middle rail 2 and the movable rail 3 retract and move backwards relative to the fixed rail 1, when the limiting plate 31 touches the first elastic piece 821 and the second elastic piece 822 of the buffer frame part 82, the first elastic piece 821 and the second elastic piece 822 deform elastically to absorb collision energy, so that the vibration is reduced, the sound generated by the collision is reduced, the buffer cavity 823 is also deformed and compressed elastically by the impact force of the limiting plate 31, and the structure of the buffer cavity 823 further absorbs the collision energy. In the process of quickly opening the drawer by a hand, the second ball frame 5 is driven by the movable rail 3 to move forwards, if the front end face of the second ball frame 5 collides with the inclined surface 8301, the second ball frame 5 generates a component force capable of elastically bending and deforming the buffering convex column 83 to the buffering convex column 83, and in the process, the buffering convex column 83 plays a role in buffering the second ball frame 5 and reduces collision noise. Through setting up above-mentioned buffering frame portion 82 and buffering protruding post 83, be favorable to reducing the utility model discloses a sound that three section rail sent when opening and shutting the drawer is favorable to making the utility model discloses a three section rail is silence when using.

As shown in fig. 8, the middle rail 2 is formed with a mounting hole 201, the middle rail end cover 8 is formed with a boss 84, specifically, the back of the middle rail end cover 8 is formed with the boss 84, the middle rail end cover 8 is formed with a clasp 81, the clasp 81 is disposed near the boss 84, as shown in fig. 7, the boss 84 is adapted to be disposed in the mounting hole 201, the clasp 81 is fastened to the edge of the mounting hole 201, and then in the telescopic moving direction (i.e., the front-back direction) of the movable rail 3, the boss 84 is relatively positioned with the mounting hole 201, so as to avoid the limiting plate 31 of the movable rail 3 from relatively displacing the middle rail end cover 8 and the middle rail 2 when colliding with the buffer frame portion 82, and because the clasp 81 fastens the edge of the mounting hole 201, then the boss 84 is difficult to come out of the mounting hole 201, which is favorable for improving the use stability of the three-section rail of the present invention.

Further, as shown in fig. 11, the rear end cover 7 is formed with a cavity 70, a buffer block 72 for buffering the rear end surface of the center rail 2 is formed in the cavity 70, a rib 73 is formed in the cavity 70, and the rear end portion of the buffer block 72 is integrally connected to the inner wall of the cavity 70 through the rib 73. When closing the drawer, well rail 2 retrieves the removal, as shown in fig. 6, the rear end face of well rail 2 can collide buffer block 72, because buffer block 72 establishes in cavity 70, so buffer block 72 can be when the collision backward elastic bending deformation and absorb the collision energy, that is to say, buffer block 72 has also played spacing effect to well rail 2, fin 73 is when buffer block 72 backward elastic bending elastic deformation, fin 73 is elastic deformation simultaneously also, fin 73 plays the effect that supports buffer block 72 and bradyseism simultaneously, thereby is favorable to the utility model discloses a three section rail silence.

Further, as shown in fig. 11 and 12, the buffer block 72 is formed with a long hole 721, as shown in fig. 3, the rear end portion of the fixed rail 1 is formed with a positioning plate 11, the positioning plate 11 is perpendicular to the fixed rail 1, the positioning plate 11 can be welded to the fixed rail 1, the positioning plate 11 is adapted to be inserted into the long hole 721, so that in the front-rear direction, the buffer block 72 is positioned with the fixed rail 1 through the positioning plate 11, the middle rail 2 is prevented from colliding with the buffer block 72 to displace the buffer block 72, and the rear end cap 7 is also prevented from coming out of the rear end portion of the fixed rail 1.

Furthermore, as shown in fig. 12, the rear end cover 7 is formed with positioning posts 74, the number of the positioning posts 74 may be two, as shown in fig. 3, the fixing rail 1 is formed with a first positioning hole 101, and the positioning posts 74 are in fit connection with the first positioning hole 101, so that the rear end cover 7 is further reliably fixed.

Further, as shown in fig. 11 and 12, the rear end cap 7 is formed with an outer wall 71, the cavity 70 is disposed inside the outer wall 71, and the outer wall 71 is in fit and abutting connection with the inner wall of the rear end portion of the fixed rail 1, in other words, the shape of the outer wall 71 of the rear end cap 7 matches the inner wall of the rear end portion of the fixed rail 1, so that the rear end cap 7 is securely and firmly connected with the fixed rail 1, and the rear end cap 7 is prevented from loosening.

Further, as shown in fig. 8, the mounting hole 201 is a rectangular hole, that is, the shape of the boss 84 also has four right angles, so that after the boss 84 is inserted into the mounting hole 201, the middle rail end cover 8 cannot swing, and the middle rail end cover 8 and the middle rail 2 are fixed firmly and reliably.

Further, as shown in fig. 13 and 14, the front end cover 6 is formed with a positioning block 61 in a square shape, as shown in fig. 3, the fixing rail 1 is formed with a second positioning hole 102, and the positioning block 61 is in fit connection with the second positioning hole 102, so that the front end cover 6 is reliably fixed with the fixing rail 1, and the front end cover 6 is prevented from being separated from the front end portion of the fixing rail 1.

The second positioning hole 102 is a square hole formed by punching the fixing rail 1 through a punching die, one side of the second positioning hole 102 is left uncut when the second positioning hole 102 is punched, and the steel plate material in the second positioning hole 102 is turned up to block the first ball frame 4. In addition, the rear end of the middle rail 2 is provided with a bump for limiting the middle rail 2 and the first ball frame 4 relatively, as shown in fig. 3, the three-section rail further comprises a limiting hook member 9, the limiting hook member 9 is hidden between the middle rail 2 and the movable rail 3, and the limiting hook member 9 is connected with the movable rail 3 through a rivet. When the drawer is pulled out, the drawer drives the movable rail 3 to move forwards and extend, when the limiting hook part 9 contacts and hooks the middle rail end cover 8, the movable rail 3 drives the middle rail 2 to move forwards and extend, then, the bump at the rear end part of the middle rail 2 pushes the rear end of the first ball frame 4, so that the first ball frame 4 moves forwards, as shown in fig. 9 and 10, when the front end of the first ball frame 4 contacts the steel sheet 1021 turned up by the steel sheet material in the second positioning hole 102, the first ball frame 4 is limited and cannot move forwards any more, and then the middle rail 2 can be limited in the extending direction.

Claims

1. The utility model provides a fender piece structure of silence three section rail, includes fixed rail (1), well rail (2), movable rail (3), first ball frame (4) and second ball frame (5), well rail (2) with fixed rail (1) pass through first ball frame (4) sliding connection, movable rail (3) with well rail (2) pass through second ball frame (5) sliding connection, the front end of fixed rail (1) is equipped with front end housing (6), the rear end of fixed rail (1) is equipped with rear end housing (7), its characterized in that: the front end of activity rail (3) is formed with limiting plate (31), the front end of well rail (2) is equipped with well rail end cover (8), the front end of well rail end cover (8) is formed with and is used for the buffering buffer frame portion (82) of limiting plate (31), buffer frame portion (82) are including first flexure strip (821) and second flexure strip (822), the middle part of first flexure strip (821) with the middle part of second flexure strip (822) is connected as an organic whole, well rail end cover (8) with first flexure strip (821) and second flexure strip (822) enclose and are equipped with buffer chamber (823), the rear end of well rail end cover (8) is formed with and is used for buffering buffer convex column (83) of second ball frame (5), buffer convex column (83) are formed with inclined plane (8301) that is used for with the preceding end face contact of second ball frame (5), well rail (2) are formed with mounting hole (201), well rail end cover (8) are formed with boss (84), well rail end cover (8) are formed with clip (81), boss (84) adaptation is arranged in mounting hole (201), clip (81) with the edge lock joint of mounting hole (201).

2. The structure of the stop member for three-stage silent rail according to claim 1, wherein: the rear end cover (7) is provided with a concave cavity (70), a buffering block (72) used for buffering the rear end face of the middle rail (2) is formed in the concave cavity (70), ribs (73) are formed in the concave cavity (70), and the rear end part of the buffering block (72) is connected with the inner wall of the concave cavity (70) into a whole through the ribs (73).

3. The structure of the stop member for a silent three-stage rail according to claim 2, wherein: the buffer block (72) is provided with a long hole (721), the rear end part of the fixed rail (1) is provided with a positioning plate (11), the positioning plate (11) is perpendicular to the fixed rail (1), and the positioning plate (11) is inserted into the long hole (721) in a matching manner.

4. The structure of the stop member for three-stage silent rail according to claim 3, wherein: the rear end cover (7) is formed with a positioning column (74), the fixed rail (1) is formed with a first positioning hole (101), and the positioning column (74) is connected with the first positioning hole (101) in an adaptive mode.

5. The structure of the stop member for three-stage silent rail according to claim 4, wherein: the rear end cover (7) is provided with an outer wall (71), the cavity (70) is arranged in the outer wall (71), and the outer wall (71) is in fit, abutting and connecting with the inner wall of the rear end part of the fixed rail (1).

6. The structure of the stop member for three-stage silent rail according to claim 1, wherein: the mounting hole (201) is a rectangular hole.

7. The structure of the stop member for three-stage silent rail according to claim 1, wherein: the front end cover (6) is provided with a square positioning block (61), the fixed rail (1) is provided with a second positioning hole (102), and the positioning block (61) is in adaptive connection with the second positioning hole (102).