KR100227858B1 - Slide rail having shock absorber - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

This technology relates to a sulide rail with a shock absorber to smoothly open and close a drawer-type object, but not to close it suddenly.

2. The problem to be solved by the invention

It is easy to design and manufacture the product, and it is easy to assemble, so it takes less assembly time, and when the damper gear and the rotary gear are engaged, the various errors are minimized, and the drawer is closed or the drawer is closed for a long time To provide a slide rail with a shock absorber to ensure that the gear is correctly engaged even in use.

3. Summary of Solution to Invention

A slide rail having an outer rail, an inner rail positioned and moving therein, and a plurality of ball bearings which move in contact with the outer rail and the inner rail and are supported by a retainer, wherein one of the outer rail or the inner rail is provided. A damper gear plate which is fixed to the rail and moves together and has a damper gear formed at an end of the portion protruding from the rail; A rotary damper which provides a full output through a rotating gear that meshes with the damper gear and rotates in a portion of the moving range of the rail that requires a buffering action; One side of the rotary damper is processed, the other side is fixed to the other rail of the rail is attached to the damper gear plate and a damper fixing plate to move together; provides a slide rail with a shock absorber comprising a, damper in the above configuration The gear plate is fixed to the rail on one side and moves together, and a damper gear at the end of the protruding portion of the rail is formed, and a bent portion for allowing the damper gear to enter the rail side at the center part in order to minimize interference caused by external obstacles. Provided is a slide rail provided with a shock absorber having a damper gear plate formed.

4. Important uses of the invention

Opens and closes smoothly in all drawer type objects, such as drawers of office equipment or drawer feed trays of office equipment, to prevent shock from closing.

Description

Slide rail having shock absorber

The present invention relates to a slide rail for smoothly opening and closing the drawer of the office furniture, or drawer-type paper trays used in copiers, laser printers, facsimile, etc., in particular a buffer to prevent the drawer or paper trays from being suddenly closed A slide rail provided with an apparatus.

Drawer-type paper trays used in office furniture drawers or copiers, laser printers, fax machines, etc. are very inconvenient when the user opens or closes the drawers because they are heavy, and numerous proposals have been made to overcome them. Among them, the most representative method is a slide rail method proposed in US Pat. No. 3,205,025 and developed and developed numerous times through US Pat. Nos. 3,801,166, 3,904,254, and 3,937,531.

Referring to the configuration and operation of the slide rail which is generally widely used with reference to Figs. 1 to 3, as shown in Figure 1 constitutes an outer rail 11 that extends long, the inner side of the outer rail 11 Correspondingly long inner rails 17 are provided, but a plurality of ball bearings 14 are disposed between the outer rails 11 and the inner rails 17 so as to smoothly move with each other. That is, the outer curved portion 12 is bent inwardly rounded at the top and bottom of the outer rail 11, and the inner curved portion 18 is formed at the top and bottom of the inner rail 17. 3 so that the ball bearings 14 are moved in contact with each other so that the ball bearings 14 do not deviate outward, and each of the plurality of ball bearings 14 is moved without being disturbed and the ball bearings are not in contact with the inner rails 17. A retainer 15 is provided to hold 14 so that it does not fall out. The outer rails 11 and the inner rails 17 move smoothly, and the outer rail protrusions on the outer rails 11, the retainers 15, and the inner rails 17, respectively, in order to limit the movement so as not to be separated out. (13, 13 '), retainer protrusions (16, 16', 16 ") and inner rail protrusions (19, 19 ') to extend the moving distance of the rail as shown in Figure 2, or the outer rail (11) ) And protrusions are formed at both ends of the inner rail 17 so that both ends of the retainer 15 come into contact with each other. However, even if the moving distance is short, various methods such as a method of safely supporting heavy loads are used.

Slide rail (1) is configured as described above is used to apply a lubricant to the ball bearing 14 in order to prevent the softness and noise, etc. when moving, it is very convenient to open and close the drawer with very little force in opening and closing the drawer. However, when the user inadvertently pushes and closes the drawer forcefully, the rail slides at a high speed and closes, so that the weight of the drawer 20 is heavy, so that a large shock is generated when the inner latching member is encountered. When the data or objects put inside the drawer is disturbed, in particular, in the case of the paper feed tray of the office equipment, the structure of the device is deformed by the shock generated by the sudden closure, or the inside of the device by the repeated shock. Damage to minute electronic parts, etc. installed in the device, or loosened parts with screws, etc. In order to overcome this problem, U.S. Patent No. 3,937,531 proposes a method of attaching a cushioning material to the projections, but the effect of the buffering is insignificant. By constructing a shock absorber, the safety of the device and the high quality are realized.

2 and 4, the damper gear 21 is formed on one side of the drawer moved by the slide rail 1, and the rotary damper 22 is fixedly attached to the main body 27 to rotate the damper 22. Rotation gear 23 is engaged with the damper gear 21 to rotate the rotating shaft 24, the rotation is prevented by a buffer such as a spring, a viscous fluid, a magnet in the damper body 25 to minimize the impact If the shock is only to be buffered in one direction, the shock absorbing force may be generated only when the buffer force is rotated in one direction through a method of mounting the one-way clutch 26 inside the rotary gear 23.

However, in the conventional shock absorber configured and operated as described above, the damper gear 21 must be formed in the drawer 20, so the product design is very complicated and difficult, and the rotary damper 22 inside the main body 27. It is difficult to fix the work and the assembly error must be minimized, so the assembly process is very demanding and the assembly time is long, and the drawer 20 and the slide rail 1 between the damper gear 21 and the rotary gear 23. And it is extremely difficult for the damper gear 21 and the rotary gear 23 to be correctly engaged by the various assembly and the car and its own errors generated when the main body 27 is involved, even if the user is assembled so as to be correctly engaged If the assembly is loosened by pressing or closing the drawer 20 or using it for a long time, the damper gear 21 and the rotary gear 23 are engaged with each other. Life and, in some cases, a problem of damage to the gear is generated.

The present invention has been made to overcome the conventional problems as described above, by integrally forming a shock absorber on the slide rail, it is easy to design, manufacture and assemble the product, the user lifted or pressed down the drawer It is an object of the present invention to provide a slide rail with a shock absorber to operate stably even when the drawer is closed or used for a long time.

1 is a conventional slide rail configuration diagram,

2 is an operation of the drawer buffer device using a conventional slide rail,

In the state that the drawer opened

(B) the state that the drawer is closed,

3 is a cross-sectional view of a conventional slide rail,

4 is a cross-sectional view of a conventional drawer buffer device,

5 is a block diagram of a slide rail provided with a shock absorber according to the present invention,

6 is an operation of the slide rail provided with a shock absorber according to the present invention,

Figure of the state that the rail which was open,

(B) The state that the rail is closed,

7 is a sectional view of main parts of a slide rail provided with a shock absorber according to the present invention;

8 is another embodiment of the slide rail provided with a shock absorber according to the present invention,

9 is a cross-sectional view of another embodiment of a slide rail provided with a shock absorber according to the present invention.

* Explanation of symbols for main parts of the drawings

1, 2: slide rails 11, 41: outer rail

12, 42: outer curved portion 13, 43: outer rail projection

14, 44: ball bearing 15, 45: retainer

16, 46: retainer protrusion 17, 47: the inner rail

18, 48: inner curved portion 19, 49: inner rail protrusion

20: drawer 21, 31: damper gear

22, 34: rotary damper 23, 35: rotary gear

24, 36: rotating shaft 25, 37: damper body

26, 38: one-way clutch 27: main body

30, 30 ': damper gear plate 32: inclined portion

33: damper fixing plate 39: bent portion

50: rail fixing part

The present invention, in order to achieve the above object, in the slide rail having an outer rail, the inner rail which is located and moved therein, and a plurality of ball bearings moved in contact with the outer rail and the inner rail but supported by a retainer. A damper gear plate having a damper gear fixed to a rail of one side of the outer rail or the inner rail and moving together and having an inclined portion gently inclined at a front end portion at an end portion of the portion protruding from the rail; A rotary damper which provides a buffer force through a rotary gear 35 which rotates in engagement with the damper gear at a rear end of the moving range of the rail; And a damper fixing plate which is fixed to the other rail of the rail to which the damper gear plate is attached, moves together, and a damper fixing plate to which the rotary damper is fixed at one side.

Hereinafter, the present invention will be described in detail with reference to FIGS. 5 to 9.

5 is a configuration diagram of a slide rail with a shock absorber according to the present invention, Figure 6 is an operation of the slide rail with a shock absorber according to the present invention, Figure 6 (a) is a rail open state Figure 6 (b) is a state in which the rail is closed, Figure 7 is a cross-sectional view of the main portion of the slide rail with a shock absorber according to the present invention, Figure 8 is another embodiment of the slide rail with a shock absorber according to the present invention 9 is a cross-sectional view of the main portion of another embodiment of a slide rail with a shock absorber according to the present invention.

In the drawing, 2 is a slide rail, 30, 30 'is a damper gear plate, 31 is a damper gear, 32 is a ramp, 33 is a damper fixing plate, 34 is a rotary damper, 35 is a rotary gear, 36 is a rotating shaft, 37 is a damper body, 38 is a one-way clutch, 39 is a bent portion, 41 is an outer rail, 42 is an outer curved portion, 43 is an outer rail protrusion, 44 is a ball bearing, 45 is a retainer, 46 is a retainer protrusion, 47 is an inner rail and 48 is an inner curved portion , 49 denote inner rail protrusions, and 50 denote rail fixing parts, respectively.

Inside the outer rail 41 formed with the outer curved portion 42 rounded inwards at the top and bottom, the inner rail 47 having the inner curved portion 48 rounded out at the top and bottom is positioned, A plurality of ball bearings 44 are supported by the retainer 45 and positioned between the outer curved portion 42 and the inner curved portion 48 to smoothly move the outer rail 41 and the inner rail 47. And outer rail protrusions 43 and 43 'and retainers on each of the outer rail 41, the retainer 45 and the inner rail 47 so as to limit the moving distance of the rail so that the rail is not separated and separated. In order to be fixed to the slide rail (2) having a plurality of supporting projections, such as the projections (46, 46 ', 46 ") and the inner rail projections (49, 49'), as shown in FIG. Damper at one end of the rail on one side of the outer rail 41 or the inner rail 47 The damper gear plate 30 formed with the gear 31 is fixed to move together with the rail, and the damper gear 31 is fixed so as to protrude upward or downward from the rail, the damper gear plate 30 The damper fixing plate 33 is fixed to the other rail which is located in correspondence with the attached rail to be moved together with the rail, and the damper fixing plate 33 provides a damping force through the rotary gear 35 through the rotary gear 35 ( 34), but the damper gear 31 and the rotary gear 35 in the portion that needs a buffer action, that is, the rear end portion of the range that the outer rail 41 and the inner rail 47 is configured to engage do.

Referring to the operation of the present invention configured as described above in detail, as shown in Figure 6 (a) from the outer rail 41 fixed to the main body and the like does not move, the rail fixing part of the moving side of the drawer ( Since the inner rail 47 fixed to 50 is moved out, the damper gear plate 30 fixed to the inner rail 47 and the damper fixing plate 33 fixed to the outer rail 41 are separated from each other. Will be. When the drawer is closed in this state, the inner rail 47 moves in the E direction of the drawing, and the damper gear 31 formed on the damper gear plate 30 and the rotary damper fixed to the damper fixing plate 33 ( The rotary gear 35 of 34 is engaged, and accordingly, as shown in FIG. 7, the rotary gear 35 rotates to rotate the rotary shaft 36 together, thereby preventing rotation by the buffer in the damper body 37. The speed at which the inner rail 47 is moved inwardly decreases. At this time, the faster the rotational speed of the rotary shaft 36 is, the larger the deceleration force becomes, according to the general operating characteristics of the rotary damper 34. When the rotation speed is low, the deceleration force also acts low, thereby preventing the shock caused by the sudden movement of the rail.

Then, as shown in (b) of FIG. 6, when the drawer is opened while the inner rail 47 is completely closed, the damper gear 31 and the rotary gear 35 move while the inner rail 47 moves in the F direction of the drawing. 6 is rotated while being completely separated and positioned as shown in FIG. 6A. In this case, when the damper gear 31 and the rotary gear 35 are engaged with each other, the decelerating force is generated. Since it may be more inconvenient to open and give more force, as in the prior art, the one-way clutch 38 is built into the rotary gear 35 so that the rotary gear 35 enters the inner rail 47 to enter (in the drawing). In the case of moving in the E direction, the rotating shaft 36 is configured to rotate together, and when the inner rail 47 moves outward (the F direction in the drawing), the rotating shaft 36 is not rotated. Only rotary gear (35) It is preferable to configure to rotate.

Therefore, by directly fixing the shock absorber to the outer rail 41 and the inner rail 47, the design and manufacturing is easy, easy to assemble and minimize the occurrence of assembly errors, the user presses or lifts the drawer to close Even if the outer rail 41 and the inner rail 47 is always in the engaged state, the meshing of the gear is made stable.

In addition, the slide rail provided with a shock absorber configured as described above is likely to cause interference with each other because the distance between the rotary gear 35 and the rail fixing portion 50 is narrow as shown in Figure 7, the damper gear 31 Since the engagement between the gears and the rotary gear 35 may be unstable, the engagement between the gears may be unstable. Thus, as shown in FIG. 8, a damper having a bent portion 39 is formed at a central portion to allow the damper gear 31 to enter the rail side. By using the gear plate 30 ', the damper gear 31 and the rotary gear 35 are engaged with each other in a state away from the rail fixing part 50, as shown in FIG. The interlocking of the liver can be made more stable.

In the configuration of the present invention configured and operated as described above, the damper gear 31 and the rotary gear 35 formed on the damper gear plate (30, 30 ') is moved in accordance with the movement of the rail and suddenly the gear When the gear is engaged with the gear, the impact noise may occur due to a sudden impact or the gear may be damaged. Therefore, the gear may be gently inclined to guide the engagement with the rotary gear 35 at the front end of the damper gear 31. It is preferable to constitute the inclined portion 32.

In addition, in the method of fixing the damper gear plates 30, 30 'and the damper fixing plate 33 to each rail, a screw or a bolt and a nut, etc. may be used. Since it may be an obstacle to the attachment or movement of the fixture, it is preferable to fix the fixture by spot welding, which does not protrude to the outside, and is easy to fix, and has almost no welding traces.

The present invention constructed and operated as described above minimizes an object interposed between the damper gear and the rotary gear while directly fixing the shock absorber to the outer rail and the inner rail of the slide rail, thereby resulting in structural and assembly errors. It is easy to design and manufacture the product by minimizing it, and it is possible to assemble the shock absorber and the slide rail at once, and it is easy to assemble because the slide rail only needs to be assembled, and the assembly time is shortened. Since the rail and the inner rail are always in the engaged state, the damper gear and the rotating gear are stably engaged, thereby preventing noise and damaging the gear, thereby increasing the reliability of the product.

Claims (2)

A slide rail comprising an outer rail, an inner rail positioned and moving therein, and a plurality of ball bearings moved in contact with the outer rail and the inner rail but supported by a retainer, Damper gear plate 30 is formed with a damper gear 31 having an inclined portion 32 is gently inclined at the front end portion of the outer rail or the inner rail is fixed to the rail of one side and moving together and protruding from the rail ); A rotary damper 34 providing a buffering force through a rotary gear 35 that rotates in engagement with the damper gear 31 at a rear end of the moving range of the rail; And The damper gear plate 30 is fixed to the other rail of the rail is attached to move together, the damper fixing plate 33 is fixed to the rotary damper 34 on one side Slider with a shock absorber characterized in that it comprises a. The method of claim 1, The damper gear plate is a slide rail provided with a shock absorber, characterized in that the bent portion (39) is formed in the center to the damper gear 31 is located in the rail side.

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