CN201254913Y - Upper rail pulley device suitable for folding door - Google Patents

Abstract

A pulley device for an upper rail of a folding door is arranged in an upper rail of a cabinet and comprises: a fixed seat with a central bolt; a pulley seat fixedly suspended on the central bolt; two balanced positioning components arranged between the fixed seat and the pulley seat, located on both sides of the central bolt, respectively supporting the two ends of the bottom of the pulley seat, respectively comprising a positioning rod, a plastic steel wheel and a spring, the positioning rod passes through the bottom of the pulley seat, the plastic steel wheel is sleeved on the positioning rod and abuts against the pulley seat from bottom to top, the spring is sleeved on the positioning rod and abuts against the plastic steel wheel upward; a plurality of pulleys are pivotally arranged on the pulley seat and respectively pass through the pulley groove and pass out of the bottom of the pulley seat, and the outer edge of the pulley contacts the inner bottom surface of the upper rail. The utility model can prevent the pulley from shaking out of the center of the rail, thereby preventing the pulley from sliding unsmoothly due to friction between the pulley and the side wall of the rail.

Description

Upper rail pulley unit for folding doors

technical field

The utility model relates to a pulley device, in particular to an upper rail pulley device suitable for folding doors, which can prevent the pulley from swaying away from the center of the track, and further avoid friction between the pulley and the side wall of the track to cause unsmooth sliding.

Background technique

Folding doors are often used in cabinets and other furniture. Users can open the folding door in a horizontal push-pull manner. The folding door is two hinged door pieces. When the folding door is opened, the two door pieces are pushed to one side of the cabinet. in a folded state.

An upper track and a lower track are horizontally fixed in the cabinet, and a pair of upper pulley assemblies and a pair of lower pulley assemblies are slidably arranged on the upper track and the lower track respectively, and each upper pulley assembly and lower pulley assembly are respectively connected with the corresponding door The flaps are fixed to each other so that the door flap can be opened and folded when pushed to the left or right.

The existing upper pulley assembly has a fixed seat, a pulley seat and several pulleys. The fixed seat is fixed to the corresponding door piece. The pulley seat is suspended on the fixed seat through a single screw rod, and the pulley is pivoted. Rolls or slides on the pulley block and in the upper track. However, the pulley seat suspended only by a single screw is very easy to shake relative to the fixed seat, causing the fixed seat and the pulley seat to appear relatively skewed, causing the pulley to deviate from the center of the upper track, resulting in friction between the pulley and the side wall of the upper track, resulting in folding The door is not smooth when it is pulled and folded, and the pulley assembly wears or even falls off over time.

Utility model content

The technical problem to be solved by the utility model is to provide an upper rail suitable for folding doors in view of the disadvantage that the upper pulley assembly of the existing folding door has only one screw rod to support the pulley seat, which causes the pulley to easily rub against the upper track and even cause the upper pulley assembly to be damaged. The pulley device can prevent the pulley from shaking and detaching from the center of the track, thereby preventing the friction between the pulley and the side wall of the track to cause smooth sliding.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: an upper rail pulley device suitable for folding doors, which is arranged in the upper rail of a cabinet, which includes: a fixed seat, with a top plate, on the top plate A central bolt is fixed on the top; a pulley seat is fixed on the central bolt and has a distance from the top plate. A central screw hole is formed at the bottom of the pulley seat for locking the central bolt, and it runs through the bottom of the pulley seat. Several pulley grooves are formed, and a perforation is formed at the bottom of the pulley seat near the two ends; two balance positioning components are arranged between the fixed seat and the pulley seat, and are located on both sides of the central bolt, respectively supporting the two ends of the bottom of the pulley seat , and each balance positioning assembly includes a positioning rod, a plastic steel wheel and a spring respectively. Press the plastic steel wheel upward against the bottom surface of the pulley seat with elastic force, and make the plastic steel wheel bounded on the upper track and several pulleys, which are pivotally arranged on the pulley seat and respectively pass through the pulley groove and pass out of the bottom of the pulley seat, and contact the inner bottom surface of the upper track with the outer edge of the pulley.

Several fixing grooves are respectively formed on the two side walls of the fixing seat, a screw rod is arranged on one of the fixing grooves, and a door stopper rod located outside the fixing seat is pierced on the screw rod, and the door stopper rod has elasticity.

The door stop lever is made of rubber.

Compared with the prior art, the utility model has the beneficial effects that: the plastic steel wheel of the utility model is located between the two opposite edges of the lower opening of the upper rail under the upward force of the spring, and can make two-point contact with the edge, thereby It can avoid the excessive gap between the upper rail pulley device and the upper rail, and keep the pulley at the center of the track without shaking and deflecting. Therefore, when the two doors on the cabinet are pulled and folded, the two sides of the pulley will It will rub against the inner side walls of the track, so the door can be pulled smoothly. In addition, because the spring pushes the plastic steel wheel upwards, even if the distance between the pulley seat and the fixed seat is changed by adjusting the central screw, it can still be used. The plastic steel wheel leans against the bottom surface of the pulley seat forever and is positioned between the lower openings of the upper track.

Description of drawings

Fig. 1 is the implementation state figure that the utility model is arranged in a cabinet.

Fig. 2 is the three-dimensional appearance diagram of the upper rail pulley device and the upper hinge of the utility model.

Fig. 3 is the three-dimensional partial exploded view of the upper rail pulley device and the upper hinge of the utility model.

Fig. 4 is the three-dimensional implementation state diagram of the utility model in the upper track.

Fig. 5 is the right side view of Fig. 4 of the utility model.

Label description:

1 Upper rail pulley device 10 Fixed seat

11 Fixing slot 13 Door stop lever

15 Top plate 16 Screw rod

17 Center bolt 18 Nut

20 Balance positioning component 21 Positioning rod

22 Spring 23 Plastic wheel

30 Pulley seat 31 Pulley groove

33 Central screw hole 35 Perforation

40 Pulley 45 Pivot

70 Lower rail pulley device 80 Upper hinge

90 Cabinets 93 Doors

931 hub device 95 upper track

951 lower opening 97 lower track

Detailed ways

Please refer to Fig. 1 to Fig. 3, the upper rail pulley device 1 that the utility model is applicable to folding door is arranged in the cabinet 90 in a slidable manner, and this cabinet 90 includes two door pieces 93, an upper rail 95, a lower rail 97 and Two lower rail pulley devices 70. The two door pieces 93 are pivotally connected to each other through the two hinges 931 . The upper and lower rails (95, 97) are horizontally arranged in the cabinet 90. The two lower rail pulley devices 70 are slidably disposed in the lower rail 97 and are respectively fixed on the corresponding door pieces 93 through a hinge.

Two upper rail pulley devices 1 are respectively arranged in the upper rail 95, and each upper rail pulley device 1 is fixed with an upper hinge 80 so as to connect the door sheet 93 respectively, and each upper rail pulley device 1 includes respectively: a fixed seat 10, a pulley Seat 30, two balance positioning components 20 and several pulleys 40.

The fixing base 10 has a top plate 15 on which a central bolt 17 is fixed through a nut 18 .

The pulley seat 30 is fixedly suspended on the central bolt 17 and has a distance from the top plate 15. A central screw hole 33 is formed through the bottom of the pulley seat 30 for locking the central bolt 17, and is formed through the bottom of the pulley seat 30. There are several pulley grooves 31 , and in addition, a through hole 35 is formed at the bottom of the pulley seat 30 near the two ends.

Please further refer to Fig. 3 and Fig. 5, two balance positioning components 20 are arranged between the fixed seat 10 and the pulley seat 30, located on both sides of the central bolt 17, supporting the two ends of the bottom of the pulley seat 30 respectively, and each balance positioning component 20 Each includes a positioning rod 21 , a plastic steel wheel 23 and a spring 22 . The positioning rod 21 protrudes upwards from the top plate 15 of the fixing seat and passes through a through hole 31 at the bottom of the pulley seat 30 . The plastic steel wheel 23 is sheathed on the positioning rod 21 and abuts against the bottom surface of the pulley seat 30 from bottom to top. The spring 22 is threaded on the positioning rod 21, between the plastic steel wheel 23 and the top plate 15 of the fixed seat 10, and the plastic steel wheel 23 is upwardly pressed against the bottom surface of the pulley seat 30 with elastic force, and the plastic steel wheel 23 is bounded on the upper track 95 Between the lower openings 951.

The plurality of pulleys 40 are respectively pivoted on the pulley seat 30 through a pivot shaft 45 and pass through the pulley groove 31 to pass out of the bottom of the pulley seat 30 , and contact the inner bottom surface of the upper track 95 with the outer edge of the pulley 40 .

Preferably, several fixing grooves 11 are respectively formed on the two side walls of the fixing seat 10, a screw rod 16 is arranged on one of the fixing grooves 11, and a door stop rod 13 located outside the fixing seat 10 is pierced on the screw rod 16. The door stop bar 13 has elasticity and can be made of rubber. In addition, the upper hinge 80 can be fixed to the upper hinge 80 through the screw rod 16 on the side wall of the fixing base 11 opposite to the door stop rod 13 .

By means of the above technical means, the plastic steel wheel 23 is subjected to the upward force of the spring 22 and is located between the two opposite edges of the lower opening 951 of the upper rail 95, and can make two-point contact with the edge, thereby preventing the upper rail pulley device 1 from contacting the upper rail 95. There is an excessive gap between them, and the pulley 40 can be placed at the center of the track without being shaken and deflected. Therefore, when the two door pieces on the cabinet are pulled and folded, the two sides of the pulley 40 will not be in contact with the two inner sides of the upper track 95. The wall is rubbed against each other, so the door piece 93 can be pulled smoothly. In addition, because the spring 22 pushes the plastic steel wheel 23 upwards, even if the distance between the pulley seat 30 and the fixed seat 10 is changed by adjusting the center screw 17, it is still possible. Let the plastic steel wheel 23 always lean against the bottom surface of the pulley seat 30 and be located between the lower openings 951 of the upper track 95 .

Claims (3)

1. [claim 1] a kind of last rail pulley gear that is applicable to folding door is arranged in the getting on the right track an of cabinet, and it is characterized in that including:

   One holder has a top board, is installed with a centre bolt on top board;

   One pulley base, set firmly outstanding stand on the centre bolt and and between top board at a distance of one at interval, bottom pulley base, run through and be formed with a center screw for the locking centre bolt, run through on pulley base bottom and be formed with several pulley grooves, this external pulley base bottom is run through respectively near two end places and is formed with a perforation;

   Two balance positioning components, be arranged between holder and the pulley base, be positioned at the centre bolt both sides, two ends, difference support pulley base bottom, and each balance positioning component includes a positioning rod respectively, an one plastic-steel wheel and a spring, this backstay is from the make progress projection and pass the wherein perforation of pulley base bottom of holder top board, this plastic-steel wheel is set on the backstay and from lower to upper against the bottom surface of pulley base, this spring is set on the backstay, the boundary is between plastic-steel wheel and holder top board, with elastic force the plastic-steel wheel upwards is pressed on the pulley base bottom surface, and makes plastic-steel wheel circle between the under shed that gets on the right track; And

   Several pulleys are hubbed on the pulley base and pass through pulley groove respectively and outside passing bottom the pulley base, and the inner bottom surface that gets on the right track with the contact of pulley outer rim.
2. [claim 2] last rail pulley gear that is applicable to folding door according to claim 1, it is characterized in that, be formed with several holddown grooves respectively on this holder two side, a holddown groove is provided with a screw rod therein, be equipped with a door shield bar that is positioned at the holder outside on screw rod, this door shield bar has elasticity.
3. [claim 3] last rail pulley gear that is applicable to folding door according to claim 2 is characterized in that this door shield bar is with the rubber manufacturing.

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