CN101243919A - Concealed roller hydraulic reset three-folding sliding rail - Google Patents

Abstract

The invention relates to the technical field of sliding rail devices, in particular to a hidden type rolling shaft hydraulic reset three-fold sliding rail, which comprises an outer rail, a middle rail and an inner rail, wherein one side edge of the outer rail is connected with the middle rail in a nested manner through a rolling shaft bracket, the inner rail is nested on the middle rail, and the hidden type rolling shaft hydraulic reset three-fold sliding rail also comprises a reset sliding block, a hydraulic damping piston, a fixed cover plate and a tension spring; the fixed cover plate is fixed on the inner groove surface of the outer rail, one side of the reset slide block is arranged in a gap formed by the middle rail and the outer rail in a sliding way, and the other side of the reset slide block is arranged in the fixed cover plate in a sliding way; one end of the inner side surface of the middle rail is provided with a shifting post for shifting the reset sliding block, the reset sliding block is provided with two convex blocks for clamping the shifting post, one end of the reset sliding block is provided with a reset stop block, and the corresponding end of the fixed cover plate is provided with a reset notch; one end of the tension spring is fixedly connected with the reset sliding block, and the other end of the tension spring is fixed in the clamping piece on the inner groove surface of the outer rail; the telescopic device has the advantages of smooth extension, balanced operation, long service life and low noise.

Description

Hidden roller hydraulic reset three-fold slide rail

Technical field:

The invention relates to the technical field of slide rail devices, in particular to a three-fold slide rail with hidden roller hydraulic reset.

Background technique:

Slide rails are designed to realize the relative movement of two adjacent objects. For example, in desks used by people, the opening and closing of drawers is mostly realized through this slide rail device. The early slide rail device mainly includes two slide bars respectively arranged on the table and the drawer, wherein the slide bar arranged on the drawer will slide along the slide bar fixed on the table. To overcome the sliding friction between the sliders, if the joint surface between the sliders is not smooth enough, the friction coefficient is large, so the friction is large, causing the object to move unsmoothly, and due to the large sliding friction, it will cause the slider to wear Faster, resulting in shortened product life. In response to the above situation, people have improved the design, such as setting a roller device between the slide bars. This method of replacing sliding friction with rolling friction makes the opening and closing of the drawer much more convenient and smooth, but the stability of its structure is still not enough. Very good, but the bearing capacity is poor, and this early slide rail is not equipped with a reset device, the slide rail can slide freely in both directions along the track, when a certain pulling force is applied from the outside world or under the action of gravity on an inclined plane, the drawer will stretch out from the table. In this way, the drawer is in a very unstable state, and any small external changes will cause it to slide, so that the user must repeatedly close it, or need to use a key to fix it relative to the table body, these All bring certain troubles to the user.

Invention content:

The object of the present invention is to provide a hidden roller hydraulically reset three-fold slide rail for the deficiencies in the prior art.

In order to achieve the above object, the present invention adopts the following technical scheme: it includes an outer rail, a middle rail and an inner rail, one side of the outer rail and the middle rail are nested and connected by roller brackets, and the inner rail is nested on the middle rail. It also includes a reset slider, hydraulic damping piston, fixed cover and tension spring; the fixed cover is fixed on the inner groove surface of the outer rail, and one side of the reset slider is slid between the middle rail and the outer rail. , the other side is slidingly arranged in the fixed cover; one end of the inner side of the middle rail is provided with a dial to toggle the reset slider, and the reset slider is provided with two bumps for clamping the dial, and the reset slider One end is provided with a reset block, and the corresponding end of the fixed cover plate is provided with a reset gap; one end of the tension spring is fixedly connected with the reset slider, and the other end is fixed in the clip on the inner groove surface of the outer rail. One end of the spring is connected with a hydraulic damping piston, and the hydraulic damping piston is fixed on the inner groove surface of the outer rail.

The inner rail and the middle rail are nested and connected by roller sliders, and the surfaces of the roller sliders in contact with the inner rail and the middle rail are provided with rollers.

The roller slider is clamped on the middle rail, and the middle rail is provided with a block to prevent the roller slider from slipping off.

There are two roller sliders, which are respectively clamped on the two ends of the middle rail.

The two sides of the middle rail are respectively provided with rollers.

The outer rail and the inner rail are provided with lugs to prevent the roller bracket from slipping off.

Corresponding rollers are provided on the contact surfaces of the roller support, the outer rail and the inner rail.

After adopting the above structure, the transmission between the outer rail and the middle rail is through the roller bracket, and the transmission between the middle rail and the inner rail is through the roller slider and the roller. These transmissions belong to rolling friction, which can reduce the friction force between the various mechanisms , so that the present invention stretches smoothly and stably; the reset slider is connected with a hydraulic damping piston, and the function of the hydraulic damping piston is to reduce the impact force brought to the device when the tension spring is quickly reset, reduce noise, and make the service life of the present invention longer long.

Description of drawings:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the three-dimensional exploded view of the present invention;

Fig. 3 is the structural representation of outer rail of the present invention;

Fig. 4 is the structural representation of middle rail of the present invention;

Fig. 5 is a schematic structural view of the stretched state of the present invention;

Fig. 6 is a structural schematic diagram of the closed state of the present invention.

Detailed ways:

As shown in Figures 1 to 4, the present invention includes an outer rail 1, a middle rail 2 and an inner rail 3, one side of the outer rail 1 and the middle rail 2 are nested and connected by a roller bracket 4, and the inner rail 3 is slid by a roller The block 9 is nested on the middle rail 2, and the roller slider 9 is clamped on the middle rail 2, and the middle rail 2 is provided with a block 22 to prevent the roller slider 5 from slipping off, and also includes a reset slider 5. Hydraulic damping piston 6, fixed cover plate 7 and tension spring 8; the fixed cover plate 7 is fixed on the inner groove surface of the outer rail 1, and one side of the reset slider 5 is slid on the middle rail 2 and the outer rail 1 to form a The other side slides in the fixed cover plate 7; one end of the inner side of the middle rail 2 is provided with a dial 21 to toggle the reset slider 5, and the reset slider 5 is provided with two clip dials. 21, one end of the reset slider 5 is provided with a reset block 52, and the corresponding end of the fixed cover plate 7 is provided with a reset gap 71; one end of the tension spring 8 is fixedly connected with the reset slider 5, and the other end is fixed on the outer rail 1 In the clip 11 on the inner groove surface; the reset slide block 5 is connected to the hydraulic damping piston 6 by one end of the tension spring 8, and the hydraulic damping piston 6 is fixed on the inner groove surface of the outer rail 1.

There are two roller sliders 9, which are respectively clamped on the two ends of the middle rail 2, and roller sliders 9 are provided with rollers 91 on the surfaces in contact with the inner rail 3 and the middle rail 2, so that the middle rail 2 The sliding between the inner rail 3 and the inner rail is smoother.

The two sides of the middle rail 2 are provided with rollers 10 respectively, and the setting of the rollers 10 is also to increase the smoothness of sliding between the middle rail 2 and the inner rail 3 .

The outer rail 1 and the middle rail 2 are provided with tabs 212 to prevent the roller bracket 4 from slipping;

Working principle: As shown in Figures 5 and 6, when the present invention is used, first the inner rail 3 slides relative to the middle rail 2, when sliding, the roller slider 9 will follow the inner rail 1 to slide relative to the middle rail 2, and is installed on the middle rail 2 The rollers 10 on both sides can increase the smoothness of sliding. After the inner rail 3 slides to the stop position, pull the middle rail 2 to slide relative to the outer rail 1. The outer rail 1 is fixed. When sliding, driven by the roller bracket 4 The middle rail 2 can slide freely relative to the outer rail 1. At this time, the reset stopper 52 of the reset slider 5 is held in the reset gap 71 of the fixed cover 7 under the pull of the tension spring 8, and the middle rail 2 is pushed inward. In the process, the dial 21 on the inner rail 2 leans against the bump 51 inside the reset slider 5, and the dial 21 shifts the bump 51 so that the reset block 52 of the reset slider 5 breaks away from the reset gap 71, and the dial Finally, the reset slider 5 rotates on the inner groove surface of the outer rail 1, and the reset slider 5 rotates through a certain angle so that the dial column 21 is clamped in the two protrusions 51, and under the tension of the tension spring 8, the reset slider is driven 5 and the middle rail 2 automatically reset inward. When the tension spring 8 quickly resets, it will have a greater impact on the device, accompanied by a larger noise. The function of the hydraulic damping piston 6 is to reduce the tension spring 8. Quick reset The impact force brought to the device at the time reduces the noise. The reverse motion is also the same, and will not be repeated here.

Of course, the examples described above are only preferred examples of the present invention, and are not intended to limit the scope of the present invention, so all equivalent changes or Modifications should be included in the patent scope of the present invention.

Claims (7)

1, concealed roller hydraulic replacement three-fold sliding track, it comprises outer rail, middle rail and interior rail, one side of outer rail is connected by roller support is nested with middle rail, on the rail, it is characterized in that during interior rail is nested in: also include reset slide block, hydraulic damping piston, securing cover plate and a tension spring; Securing cover plate is fixed on the inner groove surface of outer rail, and between the space that rail and outer rail constituted during the described slide block one that resets breakked away and is located at, opposite side is slidingly installed in the securing cover plate; Inboard face one end of rail is provided with the reversed column of stirring the slide block that resets in described, and the slide block that resets is provided with the projection of two clip reversed columns, and an end of the slide block that resets is provided with a reset baffle block, and the corresponding end of securing cover plate is provided with the breach that resets; Tension spring one end is affixed with the slide block that resets, and the other end is fixed in the intermediate plate on the outer rail inner groove surface, and the described slide block that resets is connected with a hydraulic damping piston by an end of tension spring, and the hydraulic damping piston is fixed on the inner groove surface of outer rail.

2, concealed roller hydraulic replacement three-fold sliding track according to claim 1 is characterized in that: pass through the nested connection of roller bearing slide block in described between rail and the middle rail, the roller bearing slide block all is provided with roller bearing with the face that interior rail contacts with middle rail.

3, concealed roller hydraulic replacement three-fold sliding track according to claim 2 is characterized in that: on the rail, middle rail was provided with the fixture block that prevents the landing of roller bearing slide block during described roller bearing slide block was fastened on.

4, according to claim 2 or 3 described concealed roller hydraulic replacement three-fold sliding tracks, it is characterized in that: described roller bearing slide block is two, the two ends of rail in being fastened on respectively.

5, according to claim 1,2,3 or 4 described concealed roller hydraulic replacement three-fold sliding tracks, it is characterized in that: the two sides of rail are respectively equipped with roller in described.

6, concealed roller hydraulic replacement three-fold sliding track according to claim 1 is characterized in that: outer rail and middle rail are provided with the lug position that prevents the roller support landing.

7, concealed roller hydraulic replacement three-fold sliding track according to claim 1 is characterized in that: described roller support and outer rail, middle rail phase-contact surface all are provided with corresponding roller bearing.

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