CN215776643U - Damping type heavy drawer slide rail capable of preventing bumping and dropping and easy to separate - Google Patents

Abstract

The utility model discloses a damping type heavy drawer slide rail capable of preventing bumping and dropping and easy to separate, wherein damping devices for pressing a middle rail are respectively arranged on an outer rail and an inner rail, damping bases of the damping devices are respectively fixed on the outer rail and the inner rail, a slide pin is slidably arranged on the damping bases, two ends of the slide pin extend, one end of the slide pin penetrates through the outer rail and the inner rail, the end part of the slide pin is abutted against the middle rail, a spring I is arranged on the slide pin in the damping bases in a penetrating manner, one end of the spring I is abutted against the end part of an inner cavity of the damping bases or the end part of a stepped shaft of the slide pin, the other end of the spring I is abutted against the surface of the outer rail and the inner rail, one side of a spring pressing plate is fixed at the bottom end of the outer rail, the top end of the inner rail, and the other side of the spring pressing plate extends to the upper part of the damping bases and is pressed at the top end of the slide pin; the drawer locking device is characterized by further comprising a separating plate fixed with the drawer, an inclined hook fixed on the rear side of the top end of the inner rail and a locking plate on the front side, wherein the locking plate is provided with a straight hook, and two sides of the separating plate are respectively provided with a movable pin capable of sliding in and out of the inclined hook and the straight hook. The utility model has the characteristics of strong bearing capacity, adjustable damping, bumping and falling prevention and easy drawer separation.

Description

Damping type heavy drawer slide rail capable of preventing bumping and dropping and easy to separate

Technical Field

The utility model belongs to the technical field of sliding rails, and particularly relates to a damping type heavy drawer sliding rail which is strong in bearing capacity, adjustable in damping, capable of preventing jolt coming-off and easy to separate, and a drawer is easy to separate.

Background

The sliding rail is also called a guide rail and a slideway, is a hardware connecting part which is fixed on a cabinet body of furniture and is used for the in-and-out movement of a drawer or a cabinet plate of the furniture, and is widely applied to the connection of wooden and metal drawers and fixed walls of cabinets, document cabinets, tool cabinets, bathroom cabinets and the like. At present, the slide rails are divided into light slide rails for furniture and daily hardware and heavy slide rails for industrial and special occasions, and the heavy slide rails have larger bearing capacity and can be used for industrial and special purposes such as ships, vehicles, cabinets and the like.

At present, in order to ensure that the drawer is not easy to fall off after being closed, the drawer generally adopts a self-closing angle type guide rail with international general design, a section of guide rail which is slightly inclined downwards is arranged at the rear end of a fixed rail, and a front wheel of a sliding rail arranged on the drawer automatically slides downwards under the action of self weight when walking to the inclined section, thereby ensuring that the drawer is completely closed. The self-closing angle type guide rail also has the following defects: 1. because the angle of the inclined section of the self-closing angle type guide rail is small, the drawer is easy to slip when slightly inclined outwards after being closed, and the potential safety hazard is prominent when the drawer is applied to a bumpy environment; 2. because the existing self-closing angle type guide rail can be self-locked only after being closed and is in a free sliding state after the drawer is opened, the front and back uncontrolled sliding is easy to occur when the self-closing angle type guide rail is used in a bumpy environment such as a ship, an engineering vehicle and the like, and the potential safety hazard is more prominent; 3. the inner rail, the middle rail and the outer rail of the existing self-closing angle type guide rail generally adopt stamping parts as bearing frameworks, so that the bearing capacity is not strong, the superposition of a larger static load during heavy load and an additional load generated by jolt is difficult to simultaneously bear, and the self-closing angle type guide rail is not suitable for heavy load application under a jolt environment. 4. The existing self-closing angle type guide rail is respectively fixed with a drawer and a drawing plate through an inner rail and an outer rail, an end plug at the top end of the guide rail is generally required to be removed when the drawer is required to be completely separated, then a buckle is pressed to separate the drawer from the drawer, although the separation is not complicated, the structure for preventing the separation through the end plug and the buckle is generally fragile, and the drawer is easy to lose efficacy under the conditions of impact of high force or impact of frequent and small force, so that the drawer is easy to separate accidentally, and is not suitable for being used in a frequently bumpy environment; in order to solve the problem that the drawer is easy to be accidentally separated, the guide rail, the drawer and the drawing plate are directly connected by screws, but the separation is difficult in the application environment where the drawer is frequently required to be separated, the problems of wire sliding and the like can be caused by repeatedly screwing the screws, and the difficulty in later maintenance is increased.

In order to solve the problems of the general self-closing angle type guide rail, the prior art also adopts a structure such as a tension spring connecting guide rail to prevent the drawer from sliding off due to inclination or jolt, but the function is single, and the problem that the drawer can not be prevented from freely sliding due to inclination or jolt after being opened can be solved. In order to solve the problem of preventing the drawer from freely sliding after being opened, the drawer slide rail in the prior art also adopts the pull scheme of pure sliding friction plus a front end stop block like an ancient wooden drawer, although in the initial use stage, because each part can have certain damping due to roughness and form and position tolerance, the drawer slide rail can prevent the drawer from freely sliding and falling off after being opened, but after being used for a period of time, the drawer slide freely easily because of the damping that leads to after the friction is smooth reduces, or because of the part warp and lead to the damping increase and the pull difficulty, therefore, the drawer is not suitable for being used under the environments of jolting, and the scheme of the front end stop block also leads to the drawer to be difficult when needing to break away from. Therefore, there is also a technical scheme of additionally arranging damping blocks and damping elastic sheets between the track surfaces, but because each part has tolerance, the spacing between the track surfaces is different due to tolerance superposition after the uniform damping blocks and damping elastic sheets are installed between the track surfaces, the damping force has great difference, and the uniform damping blocks and damping elastic sheets are difficult to adjust after being installed, so the use effect is not ideal. In addition, in order to increase the bearing capacity of the drawer guide rail, a scheme of horizontally connecting the drawer and the drawer pulling plate is adopted in the prior art, although the bearing capacity is high, the accommodating capacity of the drawer with the limited height is seriously reduced, and the horizontal structure easily causes sundries to enter to increase the use failure rate, so that the application is limited. Therefore, the heavy drawer slide rail in the prior art can not meet the use requirements under the conditions of jolt and heavy load.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a damping type heavy drawer slide rail which has strong bearing capacity, adjustable damping, can prevent bumping and dropping out, is easy to separate, can prevent bumping and dropping out and is easy to separate.

The utility model is realized by the following steps: comprises an outer rail, a middle rail and an inner rail which are sequentially arranged in a sliding way, damping devices for pressing the middle rail are respectively arranged on the outer rail and the inner rail, the damping device comprises a damping base, a sliding pin, a spring I and a spring pressing plate, wherein the damping base is respectively and fixedly arranged at the bottom end of the outer rail and the top end of the inner rail, the sliding pin is of a stepped shaft structure and is arranged on the damping base in a sliding way, two ends of the sliding pin extend to the upper end and the lower end of the damping base, one end of the sliding pin penetrates through the outer rail and the inner rail, the end part of the sliding pin is abutted against the middle rail, the spring I is arranged on the sliding pin in the damping base in a penetrating way, one end of the spring I is abutted against the end part of the inner cavity of the damping base or the stepped shaft end part of the sliding pin, the other end of the spring I is abutted against the surfaces of the outer rail and the inner rail, the elastic pressing plate is an elastic sheet, one side of the elastic pressing plate is fixed to the bottom end of the outer rail and the top end of the inner rail on one side of the damping base, and the other side of the elastic pressing plate extends to the upper portion of the damping base and presses the top end of the sliding pin; the drawer locking device is characterized by further comprising a separating plate fixed with the drawer, an inclined hook fixedly arranged on the rear side of the top end of the inner rail and a locking plate arranged on the front side of the inner rail, wherein the locking plate is provided with a straight hook, and movable pins capable of sliding into and out of the inclined hook and the straight hook are fixedly arranged on two sides of the separating plate respectively.

The utility model has the beneficial effects that:

1. the damping devices are respectively arranged at the bottom end of the outer rail and the top end of the inner rail, the sliding pin is pressed to the middle rail by the elastic force of the elastic pressing plate, the separation of the sliding pin and the middle rail is realized by the spring, and the pressure applied by the elastic pressing plate is balanced, so that a proper damping value exists between the inner rail and the middle rail and between the middle rail and the outer rail due to the sliding pin in the drawing and static states, and the drawer can not slide freely or slide off uncontrollably when being closed or opened due to inclination or even jolt, and is particularly suitable for being applied in a jolt environment.

2. According to the utility model, the damping devices are arranged at the bottom end of the outer rail and the top end of the inner rail, and the sliding pin is pressed towards the middle rail through the elastic force of the elastic pressing plate, so that the pressure applied to the sliding pin can be adjusted by conveniently adjusting the distance between the elastic pressing plate and the top end of the damping base according to the distance between the rail surfaces or the size of the damping after all parts are assembled, thereby avoiding the potential safety hazard of uncontrolled sliding during bumping due to over-small damping value and also avoiding the problem of difficult drawer drawing due to over-large damping value.

3. The utility model creatively arranges the separating plate fixed with the drawer, the back side of the top end of the inner rail corresponding to the separating plate is provided with the inclined hook, the front side of the top end of the inner rail is provided with the locking plate with the straight hook, then the two sides of the separating plate are respectively provided with the movable pins which can slide in and separate from the inclined hook and the straight hook, the inclined hook and the straight hook form the constraint on the movable pins in the front-back direction and the partial up-down direction, so that the separating plate and the inner rail form the integrated hard connection, and the drawer is difficult to separate from the inner rail under the condition of drawing and not violent jolt; when the drawer needs to be separated, the front end of the drawer is lifted firstly to separate the movable pin from the straight hook, then the rear end of the drawer is lifted and the drawer is pulled outwards to move the movable pin along the inclined clamping groove part of the inclined hook, and finally the rear end of the drawer is lifted upwards to separate the movable pin from the inclined hook, otherwise, the installation process is reversed, so that the separation and installation of the drawer are simple and convenient, and the connection reliability after the installation is higher. Especially, the outer side of the locking plate extending to the sliding direction of the outer rail is provided with a manual sliding lock, the sliding lock hole capable of sliding in and out of the sliding lock pin is correspondingly arranged at the front side of the separating plate, and the sliding lock pin of the manual sliding lock is matched with the sliding lock hole of the separating plate to form constraint in the front-back and up-down directions, so that violent jolt can be effectively resisted after locking to avoid slipping, the locking can be released through manually rotating the lock cap to facilitate the separation of the drawer, the jolt and overturn resistance of the sliding rail is further improved, and the characteristic of easy separation is kept.

4. The utility model adopts the heavy outer rail, the middle rail and the inner rail which are nested in a layered way, and further assists with the guide wheels which are specially arranged in the front and the back, thereby not only improving the bearing and the shock resistance of the slide rail, but also ensuring the smoothness during drawing and avoiding the blockage caused by denaturation after long-term use through the matching of the guide wheels and the guide grooves, and the wheel rims on different guide rails are mutually staggered, and the guide rails can generate hard limit during drawing, thereby effectively avoiding the falling-off of the guide rails during drawing or the falling-off of the opening state due to bumping impact, and effectively improving the safety and the reliability of the slide rail.

In conclusion, the utility model has the characteristics of strong bearing capacity, adjustable damping, bumping and falling prevention and easy drawer separation.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a second schematic structural diagram of the present invention;

FIG. 3 is a cross-sectional view of FIG. 1;

FIG. 4 is a schematic view of the structure of the outer rail and the connecting member of the present invention;

FIG. 5 is a schematic view of the structure of the middle rail and the connecting member of the present invention;

FIG. 6 is a schematic view of the structure of the inner rail and the connecting member of the present invention;

FIG. 7 is a schematic view of the structure of the separation plate and the connection member of the present invention;

FIG. 8 is a schematic view of the damping device of the present invention;

FIG. 9 is a schematic view of the manual slide lock of the present invention;

in the figure: 1-outer rail, 2-middle rail, 3-inner rail, 4-damping device, 4A-damping base, 4B-sliding pin, 4C-spring I, 4D-spring pressing plate, 4E-backing plate, 5-separating plate, 5A-sliding lock hole, 6-oblique hook, 6A-straight slot part, 6B-oblique slot part, 7-locking plate, 7A-straight hook, 9-movable pin, 10-manual sliding lock, 10A-fixed seat, 10B-sliding lock pin, 10C-lock cap, 10D-screw, 10E-screw, 10F-spring II, 11-guide wheel, 12-gasket and 13-mounting hole.

Detailed Description

The utility model is further illustrated by the following figures and examples, which are not intended to limit the utility model in any way, and any variations or modifications which are based on the teachings of the utility model are intended to be within the scope of the utility model.

As shown in fig. 1 to 7, the utility model includes an outer rail 1, a middle rail 2, and an inner rail 3 which are slidably mounted in sequence, wherein a damping device 4 for compressing the middle rail 2 is respectively disposed on the outer rail 1 and the inner rail 3, the damping device 4 includes a damping base 4A, a sliding pin 4B, a spring i 4C, and a spring pressing plate 4D, the damping base 4A is respectively and fixedly disposed at the bottom end of the outer rail 1 and the top end of the inner rail 3, the sliding pin 4B is of a stepped shaft structure and is slidably mounted on the damping base 4A, two ends of the sliding pin 4B extend to the upper and lower ends of the damping base 4A, one end of the sliding pin 4B passes through the outer rail 1 and the inner rail 3 and the end thereof abuts against the middle rail 2, the spring i 4C is disposed on the sliding pin 4B in the damping base 4A in a penetrating manner, one end of the spring i 4C abuts against the end of the inner cavity of the damping base 4A or the stepped shaft end of the sliding pin 4B and the other end abuts against the outer rail 1, The elastic pressing plate 4D is an elastic sheet, one side of the elastic pressing plate is fixed to the bottom end of the outer rail 1 and the top end of the inner rail 3 on one side of the damping base 4A, and the other side of the elastic pressing plate 4D extends to the upper portion of the damping base 4A and presses the top end of the sliding pin 4B; still include with the fixed separator plate 5 of drawer, fixed set up in the oblique couple 6 of 3 top rear sides of inner rail and the lockplate 7 of front side, lockplate 7 is provided with straight couple 7A, the both sides of separator plate 5 are fixed respectively to be provided with can slide in and throw off oblique couple 6, straight activity round pin 9 of couple 7A.

As shown in fig. 8, a manual sliding lock 10 is arranged on the outer side surface of the locking plate 7 extending to the outer side of the sliding direction of the outer rail 1, the manual sliding lock 10 includes a fixed seat 10A, a sliding lock pin 10B, a lock cap 10C, a screw rod 10D and a screw 10E, the fixed seat 10A is fixed on the locking plate 7 and the locking plate is coaxially provided with a sliding hole, the sliding lock pin 10B is slidably mounted in the sliding hole of the fixed seat 10A and one end of the sliding lock pin extends in the direction away from the inner rail 3, the other side of the sliding lock pin 10B is coaxially provided with a screw hole i and a boss, the lock cap 10C is buckled on the fixed seat 10A at one side of the screw hole i of the sliding lock pin 10B and the bottom of the fixed seat is provided with a through hole, the screw rod 10D is arranged in the lock cap 10C and one end of the screw hole i is in threaded connection with the screw hole i of the sliding lock pin 10B, the other end of the screw rod 10D is coaxially provided with a screw hole ii, the screw hole 10E passes through the through hole at the bottom of the lock cap 10C and is in threaded connection with the screw hole ii of the screw rod 10D, a spring II 10F with two ends respectively abutted against the pillow block of the sliding lock pin 10B and the bottom of the fixed seat 10A is further sleeved on the sliding lock pin 10B in the fixed seat 10A; the front side of the separation plate 5 is fixedly provided with a sliding lock hole 5A which can slide in and out of the sliding lock pin 10B.

As shown in fig. 1 and 2, rotatable guide wheels 11 are respectively disposed on the inner side near the front end of the outer rail 1, and on both sides of the inner side near the front end and the rear end of the middle rail 2, guide grooves are respectively disposed on both sides of the outer side of the middle rail 2 and the inner side of the inner rail 3, and rims of the guide wheels 11 are in rolling fit with the guide grooves.

The inner side of the inner rail 3 close to the rear end is also provided with a guide wheel 11, the rim of the guide wheel 11 arranged on the middle rail 2 protrudes out of the inner side and the outer side of the two side walls, and the inner side of the outer rail 1 and the two sides of the inner side of the middle rail 2 are also respectively provided with a guide groove which is matched with the rim of the guide wheel 11 in a rolling way.

The guide wheel 11 on the outer rail 1 is arranged on the middle rail 2 close to the rear end side of the front end guide wheel 11, the guide wheel 11 on the inner rail 3 is arranged on the middle rail 2 close to the front end side of the rear end guide wheel 11, and the wheel rim 11 on the middle rail 2 interferes with the wheel rims of the guide wheel 11 on the outer rail 1 and the inner rail 3 respectively in the sliding direction.

As shown in fig. 5, the oblique hook 6 and the locking plate 7 are both plate-shaped structures, and the bottom sides thereof are respectively fixedly connected with the top end of the inner rail 3, the upper side of the oblique hook 6 is provided with a straight clamping groove portion 6A which is perpendicular to the extending direction of the inner rail 3 and has an opening at the top end, the oblique hook 6 is further provided with an oblique clamping groove portion 6B, the top end of which is communicated with the bottom end of the straight clamping groove portion 6A, and the lower portion of which extends obliquely and downwardly towards the damping device 4 on the inner rail 3; the straight hook 7A is a straight clamping groove which is perpendicular to the extending direction of the inner rail 3 and is provided with an opening in the same direction with the opening of the straight clamping groove part 6A at the top end.

The height of the movable pins 9 on the two sides of the separating plate 5 is consistent, the height of the bottom of the inclined clamping groove part 6B is consistent with that of the bottom of the straight hook 7A, and the center distance of the bottom is the same as that of the movable pins 9 on the two sides of the separating plate 5.

Be provided with packing ring 12 or backing plate between the top of oblique couple 6 and lockplate 7 and inner rail 3, the one side that the separator 5 was kept away from to activity round pin 9 bottom and separator 5 fixed connection is provided with the waist groove that the diameter is less than straight draw-in groove portion 6A, oblique draw-in groove portion 6B and straight draw-in groove, the waist groove width of activity round pin 9 is greater than the board thickness of corresponding oblique couple 6 and lockplate 7 respectively, the thickness of packing ring 12 or backing plate is greater than the length that separator 5 one side was kept away from at the waist groove to activity round pin 9.

The gasket 12 is an elastic buffer gasket, the backing plate is an elastic buffer backing plate, and the minimum compression thickness of the elastic buffer gasket and the elastic buffer backing plate is greater than the length of the movable pin 9 on the side, away from the separating plate 5, of the waist groove.

The diameter of the movable pin 9 on the side of the waist groove far away from the separating plate 5 is larger than the groove widths of the straight clamping groove part 6A, the inclined clamping groove part 6B and the straight clamping groove.

The working principle and the working process of the utility model are as follows:

when the sliding rail is installed, the outer rail 1 is fixed with a drawing plate through screws or welding, then the separating plate 5 is fixed on two outer sides of a drawer through screws or welding, then the inner rail 3 is pulled out to the farthest end, the drawer is lifted to enable the movable pin 9 at the rear end of the separating plate 5 to fall into the straight clamping groove portion 6A of the inclined hook 6, the movable pin 9 at the rear end is put down to the bottom of the straight clamping groove portion 6A, then the movable pin 9 is slightly pushed inwards to slide into the bottom of the inclined clamping groove portion 6B, then the lock cap 10C of the manual sliding lock 10 is held by a hand, the sliding lock pin 10B is pulled up, the movable pin 9 at the front end of the separating plate 5 falls into the bottom of the straight hook 7A, the lock cap 10C is released, and the sliding lock pin 10B slides into the sliding lock hole 5A on the separating plate 5 under the action of the spring II 10F, and the integrated installation of the drawer and the sliding rail is completed; trying to pull the drawer, and adjusting the elastic pressing plate 4D to a proper position according to the damping magnitude of the sliding rail to complete the installation and adjustment of the sliding rail of the drawer. The reverse can be realized when the drawer is separated.

When the sliding rail is used, the drawer is pulled outwards, the middle rail 2 and the inner rail 3 are lifted by the guide wheels 11 on the two sides and under the damping of the sliding pin 4B, the middle rail 2 and the outer rail 1 and/or the middle rail 2 are displaced and extend outwards, the damping generated by the sliding pin 4B continuously exists after the sliding rail stops, the drawer can continuously stay at the pulling-open position and cannot slide randomly as long as the resultant force of the inclination generated by the bumping and the additional impact force is not greater than the damping value, and after the drawer is continuously pulled open to the bottom, the drawer can effectively avoid the situation that the drawer is separated from the rail when the pulling force of the guide rail is too large or the situation that the drawer is separated from the rail due to the larger bumping impact due to the mutual dislocation of the guide wheels 11 rims between the rails. The damping produced by the sliding pin 4B continues after closing, and the anti-bumping ability is maintained.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A damping type heavy drawer slide rail capable of preventing bumping and dropping and easy to separate comprises an outer rail (1), a middle rail (2) and an inner rail (3) which are sequentially slidably mounted, and is characterized in that damping devices (4) for compressing the middle rail (2) are respectively arranged on the outer rail (1) and the inner rail (3), each damping device (4) comprises a damping base (4A), a sliding pin (4B), a spring I (4C) and a spring pressing plate (4D), the damping bases (4A) are respectively fixedly arranged at the bottom end of the outer rail (1) and the top end of the inner rail (3), the sliding pins (4B) are of a stepped shaft structure and are slidably mounted on the damping bases (4A), two ends of the sliding pins (4B) extend towards the upper end and the lower end of the damping bases (4A), one end of each sliding pin (4B) penetrates through the outer rail (1), the inner rail (3) and the end part of each sliding pin (2), the spring I (4C) penetrates through a sliding pin (4B) in the damping base (4A), one end of the spring I (4C) is abutted against the end part of an inner cavity of the damping base (4A) or the stepped shaft end part of the sliding pin (4B), the other end of the spring I (4C) is abutted against the surfaces of the outer rail (1) and the inner rail (3), the elastic pressing plate (4D) is an elastic sheet, one side of the elastic pressing plate is fixed to the bottom end of the outer rail (1) and the top end of the inner rail (3) on one side of the damping base (4A), and the other side of the elastic pressing plate (4D) extends to the upper part of the damping base (4A) and presses the top end of the sliding pin (4B); still include with fixed separator plate (5) of drawer, fixed set up in oblique couple (6) of inner rail (3) top rear side and lockplate (7) of front side, lockplate (7) are provided with straight couple (7A), the both sides of separator plate (5) are fixed respectively and are provided with movable pin (9) that can slide in and throw off oblique couple (6), straight couple (7A).

2. The damping type heavy drawer slide rail capable of preventing bumping and escaping and being easily separated according to claim 1, is characterized in that a manual slide lock (10) is arranged on the outer side surface of the locking plate (7) extending to the outer side of the sliding direction of the outer rail (1), the manual slide lock (10) comprises a fixed seat (10A), a slide lock pin (10B), a lock cap (10C), a screw rod (10D) and a screw (10E), the fixed seat (10A) is fixed in the locking plate (7) and the locking plate is coaxially provided with a slide hole, the slide lock pin (10B) is slidably arranged in the slide hole of the fixed seat (10A) and one end of the slide lock pin extends in the direction far away from the inner rail (3), the other side of the slide lock pin (10B) is coaxially provided with a screw hole I and a boss, the lock cap (10C) is fastened on the fixed seat (10A) on one side of the screw hole I of the slide lock pin (10B) and the bottom of the lock pin is provided with a through hole, the screw (10D) is arranged in the lock cap (10C), one end of the screw is in threaded connection with the screw hole I of the sliding lock pin (10B), the other end of the screw (10D) is coaxially provided with a screw hole II, the screw (10E) penetrates through a through hole in the bottom of the lock cap (10C) and is in threaded connection with the screw hole II of the screw (10D), and the sliding lock pin (10B) in the fixed seat (10A) is further sleeved with a spring II (10F) of which two ends are respectively abutted to a boss of the sliding lock pin (10B) and the bottom of the fixed seat (10A); the front side of the separating plate (5) is fixedly provided with a sliding lock hole (5A) which can slide in and out of the sliding lock pin (10B).

3. The damping type heavy drawer slide rail capable of preventing bumping and separating easily according to claim 2 is characterized in that rotatable guide wheels (11) are respectively arranged on the inner side near the front end of the outer rail (1), the two sides near the front end and the rear end of the middle rail (2), guide grooves are respectively arranged on the outer side of the middle rail (2) and the two sides inside the inner rail (3), and the rims of the guide wheels (11) are in rolling fit with the guide grooves.

4. The damping type heavy drawer slide rail capable of preventing bumping and separating easily according to claim 3 is characterized in that the inner side near the rear end of the inner rail (3) is also provided with a guide wheel (11), the rim of the guide wheel (11) arranged on the middle rail (2) is protruded on the inner side and the outer side of the two side walls, and the inner side of the outer rail (1) and the two sides of the inner side of the middle rail (2) are also respectively provided with a guide groove which is matched with the rim of the guide wheel (11) in a rolling way.

5. The damping type heavy drawer slide rail capable of preventing bumping and easy to separate according to claim 4, wherein the guide wheel (11) on the outer rail (1) is disposed on the middle rail (2) near the rear end of the front end guide wheel (11), the guide wheel (11) on the inner rail (3) is disposed on the middle rail (2) near the front end of the rear end guide wheel (11), and the rim of the guide wheel (11) on the middle rail (2) interferes with the rims of the guide wheels (11) on the outer rail (1) and the inner rail (3) in the sliding direction, respectively.

6. The damping type heavy drawer slide rail capable of preventing bumping and releasing and being easily separated according to any one of claims 1 to 5, characterized in that the inclined hook (6) and the locking plate (7) are both plate-shaped structures, the bottom sides of the inclined hook (6) and the locking plate (7) are respectively fixedly connected with the top end of the inner rail (3), a straight clamping groove portion (6A) which is perpendicular to the extending direction of the inner rail (3) and is opened at the top end is arranged on the upper side of the inclined hook (6), an inclined clamping groove portion (6B) which is communicated with the bottom end of the straight clamping groove portion (6A) at the top end and extends downwards in an inclined way towards the damping device (4) on the inner rail (3) at the lower part is further arranged on the inclined hook (6); the straight hook (7A) is a straight clamping groove which is perpendicular to the extending direction of the inner rail (3) and is provided with an opening in the same direction with the opening of the straight clamping groove part (6A) at the top end.

7. The damped heavy drawer slide rail capable of preventing jolt coming-off and facilitating separation according to claim 6, wherein the height of the movable pins (9) on both sides of the separation plate (5) is the same, the height of the bottom of the inclined catch groove portion (6B) is the same as that of the straight hook (7A), and the distance between the centers of the bottoms is the same as the center distance of the movable pins (9) on both sides of the separation plate (5).

8. The damping type heavy drawer slide rail capable of preventing bumping and releasing and easy to separate according to claim 6, wherein a gasket (12) or a cushion plate is arranged between the top ends of the inclined hook (6), the locking plate (7) and the inner rail (3), the bottom end of the movable pin (9) is fixedly connected with the separating plate (5), and one side far away from the separating plate (5) is provided with a waist groove with a diameter smaller than that of the straight clamping groove part (6A), the inclined clamping groove part (6B) and the straight clamping groove, the width of the waist groove of the movable pin (9) is respectively larger than the plate thickness of the corresponding inclined hook (6) and the locking plate (7), and the thickness of the gasket (12) or the cushion plate is larger than the length of the movable pin (9) on the side far away from the separating plate (5).

9. The damping type heavy drawer slide rail capable of preventing jolt coming-off and being easily separated according to claim 8, wherein the gasket (12) is an elastic buffer gasket, the cushion plate is an elastic buffer cushion plate, and the minimum compression thickness of the elastic buffer gasket and the elastic buffer cushion plate is greater than the length of the movable pin (9) on the side of the kidney groove away from the separation plate (5).

10. The damping type heavy drawer slide rail capable of preventing jolt coming-off and being easily separated according to claim 9, wherein the diameter of the movable pin (9) at the side of the waist groove far away from the separating plate (5) is larger than the groove width of the straight clamping groove portion (6A), the inclined clamping groove portion (6B) and the straight clamping groove.

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