CN106617810B

CN106617810B - External hanging type automatic recovery device for drawer slide rail

Info

Publication number: CN106617810B
Application number: CN201710051451.1A
Authority: CN
Inventors: 许兴隆; 查一帆; 季强
Original assignee: Wuxi Haidaer Precision Slides Co ltd
Current assignee: Wuxi Haidaer Precision Slides Co ltd
Priority date: 2017-01-23
Filing date: 2017-01-23
Publication date: 2022-11-04
Anticipated expiration: 2037-01-23
Also published as: CN106617810A

Abstract

The invention provides an externally-hung automatic recovery device for a drawer slide rail, which can solve the problems of easy slide rail deformation and large installation difficulty, low assembly efficiency and short service life of the existing installation mode. The shifting block with the connecting teeth at the bottom is arranged on the movable guide rail which is fixedly connected on the outer side surface of the drawer, the concave structures of the fixed guide rail and the movable guide rail are oppositely arranged and are mutually sleeved in a sliding way, and the fixed guide rail is fixedly connected on the inner side surface of the cabinet body; casing support passes through the lock structure and hangs in the below of fixed guide, is equipped with the chamber that holds that extends along slide rail length direction in the casing support, and the whole holding of resilience mechanism is in holding the intracavity, and slider slidable mounting is on the guide structure of resilience main part of resilience mechanism, and the front side position on casing support's the top surface is seted up and is held the bar open slot of chamber UNICOM, stirs the piece and can stretch into through the bar open slot and hold the intracavity and make the tooth of plugging into and form the cooperation of plugging into with the slider of stirring the piece bottom.

Description

External hanging type automatic recovery device for drawer sliding rail

Technical Field

The invention relates to the field of sliding rails, in particular to an externally-hung automatic recovery device for a drawer sliding rail.

Background

In the existing drawer slide rail structure, most of the drawers do not have an automatic recovery function, namely, a user can completely close the drawers only by applying thrust in the whole process, when the applied thrust is too large, the drawer is easy to impact and collide with the cabinet body part, even the drawer rebounds, and the box body is easy to damage after long-time operation; when the pushing force is too small, the drawer can not be completely closed, and particularly for the drawer arranged in the refrigerator, the contact between the matters stored in the refrigerator body and the surrounding air is easy to cause, and the storage requirement can not be met. At present, drawer slide rails with automatic recovery functions are also available in the field, most of the drawer slide rails are automatically buffered and closed at the last stroke section of closing by installing an automatic recovery mechanism in the slide rails, when the existing slide rail automatic recovery mechanism is assembled with the drawer slide rails, a metal support is welded or thermally riveted at the installation position of the drawer slide rails, and then the slide rail automatic buffer recovery device is installed on the metal support in a fastening or rivet fixedly connecting mode.

Disclosure of Invention

Aiming at the problems, the invention provides an externally-hung automatic recovery device for a drawer slide rail, which can solve the problem that the existing installation mode is easy to cause slide rail deformation and solve the problems of large installation difficulty, low assembly efficiency and short service life of the existing installation mode.

Its technical scheme does for the outer hanging automatic recovery unit of drawer slide rail, it is including dialling piece and resilience mechanism, dial the piece and install on the movable guide of drawer slide rail, the movable guide rigid coupling is on the drawer lateral surface, the fixed guide of drawer slide rail with movable guide all is the spill structure, the spill structure of fixed guide, movable guide set up in opposite directions and fixed guide with the mutual slip cup joints between the movable guide, the fixed guide rigid coupling is on cabinet body medial surface, it is equipped with the tooth of plugging into, its characterized in that to dial piece bottom: the spring-back mechanism is characterized by further comprising a shell support, the shell support is hung below the fixed guide rail through a buckling structure, a containing cavity extending along the length direction of the slide rail is formed in the shell support, the spring-back mechanism is integrally contained in the containing cavity and comprises a spring-back main body, a spring and a slide block, a connection groove is formed in the top surface of the slide block, a guide structure is arranged on the spring-back main body, the slide block is slidably mounted on the guide structure, the front end of the spring is connected with the slide block, the rear end of the spring is fixed with the spring-back main body, a strip-shaped open groove communicated with the containing cavity is formed in the front side position of the top surface of the shell support, and the shifting block can stretch into the containing cavity through the strip-shaped open groove to enable connection teeth at the bottom of the shifting block to be in connection fit with the connection groove of the slide block.

Further, the front end bottom of resilience main part is equipped with the locating piece that extends towards the level, is equipped with the elasticity card strip on the rear end lateral wall, be provided with the flange that extends towards the level on the front end wall that holds the chamber, the flange with hold and form a spacing groove between chamber front end wall, the bottom surface, the rear end position of shell support's lateral surface has been seted up the locating hole, the resilience main part passes through the bar open slot stretches into hold the intracavity and the locating piece card is gone into the spacing inslot the elasticity card strip inlays to be packed into in the locating hole.

Furthermore, the concave structure of the fixed guide rail is sleeved in the concave structure of the movable guide rail, the movable guide rail can horizontally move along the fixed guide rail, the shifting block is fixedly arranged on the outer side wall of the movable guide rail, and the tooth shape direction of the connecting tooth of the shifting block vertically extends downwards into the strip-shaped open slot and can form connecting fit with the connecting slot of the sliding block.

Furthermore, the buckling structure comprises at least two support lugs extending upwards and arranged on the outer side end of the top of the shell support, each support lug is provided with a T-shaped boss protruding horizontally towards the inner side, the fixed guide rail is provided with two T-shaped positioning holes matched with the T-shaped bosses, and the T-shaped bosses are inserted into the T-shaped positioning holes.

Furthermore, rivet holes are respectively formed in the support lug and the fixed guide rail, and the support lug corresponds to the rivet holes in the fixed guide rail one by one and is fixedly connected through rivets.

Further, the concave structure of the movable guide rail is sleeved in the concave structure of the fixed guide rail, the whole of the shell support and the rebound mechanism accommodated in the accommodating cavity of the shell support clockwise turns 90 degrees towards one side of the outer side of the drawer to a horizontal installation position, and is hung below the fixed guide rail through a buckling structure, when the shell support is in the horizontal installation position, the strip-shaped open slot and the notch of the connection slot on the top surface of the sliding block face one side of the side wall of the drawer, the connection tooth at the bottom of the shifting block is a horizontal hooked tooth bent towards the inner side of the cabinet body, and the hooked tooth can extend into the strip-shaped open slot to form connection fit with the connection slot of the sliding block.

Further, the spiral-lock structure includes that the casing support is preceding couple, the back couple that central point and rear end of top surface when the horizontal installation position set up respectively, be equipped with the elasticity fixture block between preceding couple and the back couple, seted up preceding mounting hole on fixed guide's the bottom lateral wall, back mounting hole and the back tip is equipped with a notch groove, preceding couple passes through preceding mounting hole with fixed guide's bottom lateral wall colludes, the elasticity fixture block in the back mounting hole, the rear end of casing support passes through the back couple the notch groove of fixed guide's bottom lateral wall colludes.

Further, the top surface of the shell support in the horizontal installation position is an arc-shaped surface matched with the bottom side wall of the fixed guide rail.

Furthermore, the rebound mechanism further comprises a damping piece, the damping piece is mounted on the rebound main body through a fixing structure, and a guide rod of the damping piece is connected with the sliding block.

Furthermore, the rebound main body is hollowed along the length direction to form a containing groove with an open inner side, an integrated inclined surface portion which is declined towards the front side is arranged at the front end of the containing groove, the front end of the containing groove is closed, a clamping groove is arranged at the rear end of the containing groove, the spring is contained in the containing groove, the rear end of the spring is clamped in the clamping groove, a fixing structure is arranged on the top wall of the containing groove, a horizontal guide portion is formed on the top wall of the containing groove positioned at the front side of the fixing structure, the slider is slidably mounted on the horizontal guide portion, the upper portion of the rear end of the slider is fixedly connected with the guide rod of the damping part, the lower portion of the slider is fixedly connected with the front end of the spring, the horizontal guide portion, the inclined surface portion and the bar-shaped open groove are opposite to enable the toggle block to be in connection and fit with the slider through the bar-shaped open groove, a protrusion is arranged on the inclined surface portion, a positioning groove is formed between the protrusion and the top corner of the front end of the containing groove, a limiting plate is further arranged at the front end of the inclined surface, the limiting plate is arranged on the bottom surface of the front side of the limiting plate, and the positioning block horizontally extends forwards, and the horizontal guide portion, the limiting plate, and the limiting plate form the guiding structure.

Further, the length of the strip-shaped open slot is the sum of the length of the horizontal guide part and the horizontal projection length of the inclined plane part.

Furthermore, the horizontal guide part and the outer side surface of the inclined plane part of the springback main body are also provided with an integrated side baffle.

Further, the slider includes the base plate, the lateral surface of base plate is equipped with convex part and lower convex part, lower convex part is located the bottom rear end of base plate and the top surface of convex part is the horizontal plane down, the top of going up the convex part is equipped with the groove of plugging into of upwards open-ended, with the bottom surface of the just right last convex part of lower convex part is equipped with oblique ascending incision limit, the bottom surface of going up the convex part is equipped with decurrent location arch, the incision limit with form the notch of going up the fovea between the location arch, the protruding bottom surface of location with the rear end bottom edge of going up the convex part flushes, it forms horizontal guide way to go up the location arch, rear end base of convex part and between the top surface of lower convex part, the horizontal guide portion of resilience main part inlay in the horizontal guide way, the base plate base is including anterior hypotenuse and the rear portion horizontal edge of joint, anterior hypotenuse goes up forward and with the incision limit is parallel, location arch, anterior hypotenuse can respectively with the constant head tank on the resilience main part forms the cooperation with the inclined plane portion.

Furthermore, the fixed structure comprises a rear support and a front support which are arranged on the top surface of the accommodating groove, the rear end of the damping piece is fixedly arranged on the rear support, the front end of the damping piece is limited by the front support, a horizontal through groove is formed in the front support, and a guide rod of the damping piece penetrates through the horizontal through groove and then is connected with the rear end of the sliding block.

Furthermore, the rear ends of the upper convex part and the lower convex part are respectively provided with a T-shaped groove, the front end of the guide rod of the damping part is embedded in the T-shaped groove of the upper convex part, and the front end of the spring is embedded in the T-shaped groove of the lower convex part.

The invention has the beneficial effects that:

(1) The whole rebound mechanism is accommodated in a shell support, and the shell support is hung below the fixed guide rail through a buckling structure, so that the problems that the existing rebound mechanism is arranged on a metal support and then welded or hot riveted on the guide rail by the metal support, the slide rail is easy to deform, the installation difficulty is high and the assembly efficiency is low can be effectively solved;

(2) The shell support is a hollow shell structure which is internally provided with an accommodating cavity and provided with a strip-shaped open slot at the top, and can effectively isolate external sundries from falling into the rebounding mechanism, so that the rebounding mechanism is prevented from being polluted by the external sundries, and the reliable work of the rebounding mechanism is ensured; meanwhile, the rebounding mechanism extends into the accommodating cavity of the shell support through the strip-shaped open slot on the top surface of the shell support and is positioned by the positioning structure, so that a sliding block of the rebounding mechanism is in connection fit with the shifting teeth of the shifting block arranged on the movable guide rail through the strip-shaped open slot, and the automatic rebounding function of the rebounding mechanism can be realized;

(3) The rebound mechanism adopts an externally-hung installation mode, and thoroughly abandons the structural form that the traditional rebound mechanism is installed inside the slide rail, thereby effectively improving the bearing capacity of the slide rail without changing the bearing structure of the slide rail and greatly prolonging the service life of the slide rail.

Drawings

FIG. 1 is a perspective view from a first perspective of a first embodiment of the present invention;

FIG. 2 is a perspective view of a second perspective view of the first embodiment of the present invention;

FIG. 3 is a perspective view of a housing bracket according to a first embodiment of the present invention;

FIG. 4 is a second perspective view of the housing bracket of the first embodiment of the present invention;

FIG. 5 is a schematic view of the connection between the rebounding mechanism and the shifting block according to the first embodiment of the present invention;

FIG. 6 is a schematic structural view of a fixed rail according to a first embodiment of the present invention;

FIG. 7 is a perspective view of a second embodiment of the present invention;

FIG. 8 is a schematic view of the assembly of the housing bracket and the fixed guide rail according to the second embodiment of the present invention;

FIG. 9 is a perspective view of a stationary guide rail according to a second embodiment of the present invention;

FIG. 10 is a first perspective view of a housing bracket according to a second embodiment of the present invention;

FIG. 11 is a second perspective view of a housing bracket according to a second embodiment of the present invention;

FIG. 12 is an enlarged schematic view of a dial block according to a second embodiment of the present invention;

FIG. 13 is a schematic view of the rebound body structure of the rebound mechanism of the present invention;

FIG. 14 is an enlarged structural view of a first viewing angle of a slider of the rebounding mechanism of the present invention;

FIG. 15 is an enlarged structural view of a second view of the slider of the rebounding mechanism of the present invention;

FIG. 16 is a schematic view of the rebound mechanism of the present invention during the movement of the slider on the rebound body during the opening of the movable rail;

fig. 17 is a schematic diagram of the state of the automatic return process of the sliding block and the toggle block of the rebounding mechanism after the connection fit fails.

Reference numerals in the above figures:

10-fixing the guide rail; 11-T-shaped positioning holes; 12-rivet holes; 13-front mounting holes; 14-rear mounting holes; 15-notch groove.

20-movable guide rail.

30-a toggle block; 31-connecting teeth.

40-a rebound mechanism; 41-a resilient body; 411-locating blocks; 412-elastic snap strips; 413-accommodating grooves; 414-ramp portion; 4141-bumps; 415-a card slot; 416-horizontal guide; 417-positioning groove; 418-limiting plate; 419-side baffle; 4201-rear support; 4202-front holder; 42021-horizontal through groove; 42-a spring; 43-a slide block; 431-a docking bay; 432-a substrate; 4321-anterior bevel; 4322-rear horizontal edge; 433-an upper convex part; 4331-cut edge; 4332-locating projection; 4333-notch; 4334-T-shaped groove; 434-lower convex part; 4341-T-shaped groove; 435-horizontal guide groove; 436-front end bevel; 44-damping member.

50-a housing bracket; 51-an accommodation chamber; 511-flange; 512-a limit groove; 513-positioning holes; 52-strip-shaped open slots; 53-lugs; 531-T shaped boss; 532-rivet hole; 54-front hook; 55-rear hook; 56-elastic clamping block; 57-top surface.

Detailed Description

For convenience of understanding, the terms "front" and "rear" in the present invention refer to the opening direction of the drawer with respect to the cabinet, and the same direction as the opening direction is defined as "front" and the same direction as the closing direction is defined as "rear".

The first embodiment is as follows:

referring to fig. 1 to 4, the externally-hung automatic recycling device for drawer sliding rails comprises a toggle block 30, a rebound mechanism 40 and a shell support 50, wherein the toggle block 30 is mounted on a movable guide rail 20 of the drawer sliding rail, the movable guide rail 20 is fixedly connected to the outer side surface of a drawer, a fixed guide rail 10 and the movable guide rail 20 of the drawer sliding rail are both in concave structures, the concave structures of the fixed guide rail 10 and the movable guide rail 20 are oppositely arranged, the fixed guide rail 10 and the movable guide rail 20 are mutually sleeved in a sliding manner, the fixed guide rail 10 is fixedly connected to the inner side surface of a cabinet body, and a connecting tooth 31 is arranged at the bottom of the toggle block 30; casing support 50 hangs in the below of fixed guide 10 through the lock structure, be equipped with the chamber 51 that holds that extends along slide rail length direction in casing support 50, the whole holding of resilience mechanism 40 is in holding chamber 51, resilience mechanism 40 is including resilience main part 41, spring 42 and top surface are equipped with the slider 43 of the groove 431 of plugging into, be equipped with guide structure on the resilience main part 41, slider 43 slidable mounting is on guide structure, spring 42's front end is connected with slider 43, the rear end is fixed with resilience main part 41, the bar open slot 52 that leads to with holding chamber 51 UNICOM is seted up at the front side position on casing support 50's the top surface, stirring block 30 can stretch into through bar open slot 52 and hold the chamber 51 in making the tooth 31 of plugging into of stirring block 30 bottom form the cooperation of plugging into with the groove 431 of plugging into of slider 43.

The bottom of the front end of the springback main body 41 is provided with a positioning block 411 which horizontally extends forwards, the outer side wall of the rear end is provided with an elastic clamping strip 412, the front end wall of the accommodating cavity 51 is provided with a flange 511 which horizontally extends backwards, a limiting groove 512 is formed between the flange 511 and the front end wall and between the flange 511 and the bottom surface of the accommodating cavity 51, the rear end position of the outer side surface of the shell support 50 is provided with a positioning hole 513, the springback main body 41 extends into the accommodating cavity 51 through a strip-shaped opening groove 52, the positioning block 411 is clamped into the limiting groove 512, and the elastic clamping strip 412 is embedded into the positioning hole 513.

The concave structure of the fixed guide rail 10 is sleeved in the concave structure of the movable guide rail 20, the movable guide rail 20 can horizontally move along the fixed guide rail 10, the shifting block 30 is fixedly arranged on the outer side wall of the movable guide rail 20, and the tooth-shaped direction of the connecting tooth 31 of the shifting block 30 vertically extends downwards into the strip-shaped open slot 52 and can form connecting fit with the connecting slot 431 of the sliding block 43.

The buckling structure comprises at least two support lugs 53 extending upwards and arranged on the outer side end of the top of the shell bracket 50, in the embodiment, two support lugs 53 are arranged, two T-shaped bosses 531 horizontally protruding towards the inner side are arranged on the two upper support lugs 53, two T-shaped positioning holes 11 matched with the T-shaped bosses 531 are formed in the fixed guide rail 10, and the T-shaped bosses 531 are inserted into the T-shaped positioning holes 11;

rivet holes

532 and 12 are further formed in the support lug 53 and the fixed guide rail 11 respectively, and the support lug 53 corresponds to the rivet holes 12 in the fixed guide rail 10 one by one and is fixedly connected through rivets.

The rebound mechanism 40 further comprises a damping piece 44, the damping piece 44 is mounted on the rebound main body 41 through a fixed structure, and a guide rod of the damping piece 44 is connected with the sliding block 43;

the rebound main body 41 is hollowed along the length direction to form an accommodating groove 413 with an open inner side, the front end of the accommodating groove 413 is provided with an integrated inclined surface part 414 which descends towards the front side, the front end of the accommodating groove 413 is closed, the rear end of the accommodating groove 413 is provided with a clamping groove 415, the spring 42 is accommodated in the accommodating groove 413 and the rear end of the spring is clamped in the clamping groove 415, the top wall of the accommodating groove 413 is provided with a fixed structure, the top wall of the accommodating groove 413 positioned at the front side of the fixed structure forms a horizontal guide part 416, the slider 43 is slidably mounted on the horizontal guide part 416, the upper part of the rear end of the slider 43 is fixedly connected with the guide rod of the damping part 44, the lower part of the slider 43 is fixedly connected with the front end of the spring 42, the horizontal guide part 416, the inclined surface part 414 are opposite to the strip-shaped opening groove 52, so that the toggle block 30 can form a connection and matching with the slider through the strip-

shaped opening groove

52 and 43, the inclined surface part 414 is provided with a protrusion 4141, a positioning groove 417 is formed between the protrusion 4141 and the top corner of the front end of the accommodating groove 413, the front end of the inclined surface part 414 is further provided with a limiting plate 418, and the bottom surface of the limiting plate 418 is provided with a positioning block 411 which extends horizontally forward, the positioning block 416, the positioning structure; the length of the strip-shaped open slot 52 is the sum of the length of the horizontal guide part 416 and the horizontal projection length of the inclined plane part 414; the horizontal guide portion 416 and the outer side surface of the inclined surface portion 414 of the rebound body 41 are further provided with an integrated side shutter 419.

The slider 43 includes a base plate 432, an outer side surface of the base plate 432 is provided with an upper protrusion 433 and a lower protrusion 434, the lower protrusion 434 is located at a rear end of a bottom of the base plate 432, a top surface of the lower protrusion 434 is a horizontal surface, a top portion of the upper protrusion 433 is provided with a connection groove 431 opened upward, a bottom surface of the upper protrusion opposite to the lower protrusion 434 is provided with an oblique upward notch 4331, a bottom surface of the upper protrusion 433 is provided with a downward positioning protrusion 4332, an upward concave notch 4333 is formed between the notch 4331 and the positioning protrusion 4332, a bottom surface of the positioning protrusion 4332 is flush with a bottom edge of the rear end of the upper protrusion 433, a horizontal guide groove 435 is formed between the positioning protrusion 4332 of the upper protrusion 433, the bottom edge of the rear end and a top surface of the lower protrusion 434, the horizontal guide 416 of the resilient body 41 is embedded in the horizontal guide groove 435, a bottom edge of the base plate 432 includes a front oblique edge 4321 and a rear oblique edge 4322, the front portion 4321 is oblique edge, the front portion 4321 is oblique upward and parallel to the oblique edge 4331, and the positioning groove 4332 and the front portion 414 are respectively matched with the oblique edges of the resilient body 41.

The fixing structure includes a rear bracket 4201 and a front bracket 4202 disposed on the top surface of the receiving groove 413, the rear end of the damper 44 is fixedly mounted on the rear bracket 4201, the front end is limited by the front bracket 4202, the front bracket 4202 is provided with a horizontal through groove 42021, and the guide rod of the damper 44 passes through the horizontal through groove 42021 and then is connected to the rear end of the slider 43.

The upper convex portion 433 and the lower convex portion 434 are respectively provided at the rear ends thereof with T-

shaped grooves

4334 and 4341, the front end of the guide rod of the damper 44 is fitted in the T-shaped groove 4334 of the upper convex portion, and the front end of the spring 42 is fitted in the T-shaped groove 4341 of the lower convex portion.

Damping piece 44 can receive under the spring 42 resilience force effect at slider 43 and retrieve the in-process and play effectual cushioning effect, guarantees that slider 43 drives and dials and can slowly retrieve when moving block 30 and movable rail 20 are retrieved automatically, prevents that spring 42 resilience force is great and takes place slider 43's quick resilience and movable rail 20 drives the drawer and retrieves the impact to the cabinet body fast.

The following describes the working process of the automatic recovery device of the present invention specifically:

when the drawer is pulled out forward, the drawer drives the movable rail 20 to move forward, so that the shifting block 30 drives the sliding block 43 to move forward along the horizontal guide part 416 of the resilient main body 41 while the guide rod and the spring 42 of the damping member 44 are stretched, when the positioning protrusion 4332 of the sliding block 43 moves to the front corner end of the horizontal guide part 416 and then continues to move forward, the positioning protrusion 4332 slides forward into the positioning groove 417 in the front of the resilient main body while the sliding block 43 is integrally limited by the inclined plane part 414 in a forward-inclined manner, and at the same time, the connection groove 431 at the top of the sliding block 43 is synchronously in a front-low and back-high state, when the movable rail 20 continues to move forward, the shifting block 30 can be separated from the front groove wall of the connection groove 431, the drawer pulls the movable rail 20 to continue to open, and at this time, the sliding block 43 is matched with the positioning groove 417 through the positioning protrusion 4332 and positioned at the front end of the resilient main body 41 in a forward-inclined manner, and the guide rod of the spring 42 and the damping member 44 is in a fully stretched state, see fig. 16;

when the drawer is to be closed, the drawer drives the movable rail 20 to move backward, and at this time, the sliding block 43 is still in a forward-inclined state, that is, the connection groove 431 is still in a state of being low in front and high in back, so that the shifting block 30 can enter the connection groove 431 through the front side groove wall of the connection groove 431 and the back side end surface of the shifting block 30 is in contact with the back side groove wall of the connection groove 431, when the movable rail 20 continues to drive the shifting block 30 to move backward, the shifting block 30 pushes the sliding block 43 to slightly rotate counterclockwise while the positioning protrusion 4332 is disengaged from the positioning groove 417, the entire sliding block 43 returns to a horizontal state from the forward-inclined state, the connection groove 431 of the sliding block 43 is also in a horizontal state, the front end and the back end of the shifting block 30 are completely limited by the connection groove 431, under the rebound action of the spring 42, the guide rod of the damping member 44 drives the sliding block 43 to slowly move backward, and the sliding block 43 drives the shifting block 30 and the movable rail 20 to slowly move backward until the movable rail 20 is completely closed, that is the drawer completely closed, see fig. 16.

When the drawer is in a fully opened state, when the cabinet body is influenced by external vibration, the sliding block 43 possibly automatically breaks away from the positioning of the front end positioning groove 317 to rebound under the rebounding action of the spring 42, and at the moment, the whole sliding rail rebounding mechanism is in a failure state; referring to fig. 17, at this time, the drawer needs to be pushed backwards first, the movable rail 20 is driven by the drawer to move backwards until the bottom of the rear end of the shifting block 30 abuts against the front end inclined plane 436 of the sliding block 43, then the drawer continues to be pushed backwards, the shifting block 30 moves upwards along the front end inclined plane 436 of the sliding block 43, and due to the elasticity of the plastic material of the sliding block 43, the front side groove wall of the connection groove 431 of the sliding block 43 is pressed downwards by the shifting block 30 to generate downward plastic deformation, so that the bottom of the shifting block 30 crosses the front end groove wall of the connection groove 431 and recovers along with the deformation of the front end groove wall of the connection groove 431, the shifting block 30 enters the connection groove 431 as a whole and is limited by the connection groove 431, and the function of the sliding rail rebounding mechanism recovers.

The damper 44 and the spring 42 are not shown in fig. 16 and 17.

Example two:

the difference between the second embodiment and the first embodiment is that the concave structure of the movable rail 20 is sleeved in the concave structure of the fixed rail 10, the whole of the housing bracket 50 and the resilient mechanism 40 accommodated in the accommodating cavity 51 of the housing bracket 50 is turned clockwise by 90 degrees towards one side of the outer side of the drawer to a horizontal installation position and is hung below the fixed rail 10 through a fastening structure, see fig. 7, when the housing bracket 50 is in the horizontal installation position, the strip-shaped open slot 52 and the notch of the connection slot 431 on the top surface of the slider 43 both face one side of the side wall of the drawer, see fig. 8, the connection tooth at the bottom of the toggle block 30 is a hook-shaped tooth 31 'bent towards the inner side of the cabinet, see fig. 12, and the hook-shaped tooth 31' can extend into the strip-shaped open slot 52 to form connection fit with the connection slot 431 of the slider 43.

The buckling structure comprises a front hook 54 and a rear hook 55 which are respectively arranged at the central position and the rear end part of the top surface of the shell bracket 50 when the shell bracket 50 is in a horizontal installation position, as shown in fig. 9, fig. 10 and fig. 11, an elastic clamping block 56 is arranged between the front hook 54 and the rear hook 55, a front installation hole 13 and a rear installation hole 14 are arranged on the bottom side wall of the fixed guide rail 10, a notch groove 15 is arranged at the rear end part, the front hook 54 is hooked with the bottom side wall of the fixed guide rail 10 through the front installation hole 13, the elastic clamping block 56 is clamped in the rear installation hole 14, and the rear end of the shell bracket 50 is hooked with the notch groove 15 of the bottom side wall of the fixed guide rail 10 through the rear hook 55; the top surface 57 of the housing bracket 50 in the horizontal mounting position is an arcuate surface that mates with the bottom side wall of the stationary guide 10.

The resilient mechanism 40 in the automatic recovery apparatus of the present embodiment is the same as the resilient mechanism in the first embodiment, when assembling, the resilient mechanism 40 is integrally extended into the accommodating cavity 51 through the strip-shaped opening groove 52 at the top of the housing bracket 50, and the positioning block 411 at the front end of the resilient body 41 is clamped into the limiting groove 512, the elastic clamping strip 412 on the resilient body 41 is assembled into the positioning hole 513, so as to realize the positioning of the resilient mechanism 40 in its entirety in the housing member 50, then the housing member 50 and the resilient mechanism already positioned in the housing member 50 are integrally turned 90 degrees clockwise toward one side of the drawer, so that the housing member 50 and the resilient mechanism in the housing member are both turned to a horizontal mounting device facing one side of the drawer, then the front hook 54 on the top surface of the housing member 50 in the horizontal mounting position is upwardly passed through the front mounting hole 13 on the bottom sidewall of the fixed rail 10, then the housing member 50 is integrally pushed horizontally toward the rear side so that the rear hook 55 is hooked with the end of the bottom sidewall of the fixed rail through the cut-out groove 15, and the front hook 55 is hooked with the front mounting hole 13, and the rear mounting block 56 is clamped into the rear mounting hole 14, that the assembly is completed. The mounting mechanism realizes a tool-free rivet-free mounting mode, is convenient and efficient to assemble, and the externally-hung structure can effectively reduce the internal assembly space of the slide rail, so that the bearing capacity of the drawer slide rail is improved, and the bearing capacity of the drawer slide rail can be improved by 50% after the externally-hung automatic recovery mechanism is adopted under the condition that the structure of the slide rail is not changed, thereby greatly prolonging the service life of the drawer slide rail.

Claims

1. A outer hanging automatic recovery unit for drawer slide rail, it is including dialling piece (30) and resilient mounting (40), dial piece (30) and install on movable guide (20) of drawer slide rail, movable guide (20) rigid coupling is on the drawer lateral surface, fixed guide (10) of drawer slide rail with movable guide (20) all are the spill structure, the spill structure of fixed guide (10), movable guide (20) sets up in opposite directions and fixed guide (10) with mutual slip cup joints between movable guide (20), fixed guide (10) rigid coupling is on cabinet body medial surface, dial piece (30) bottom and be equipped with and connect into tooth (31), its characterized in that: the spring type shifting block is characterized by further comprising a shell support (50), the shell support (50) is hung below the fixed guide rail (10) through a buckling structure, an accommodating cavity (51) extending along the length direction of the slide rail is formed in the shell support (50), the rebounding mechanism (40) is integrally accommodated in the accommodating cavity (51), the rebounding mechanism (40) comprises a rebounding main body (41), a spring (42) and a sliding block (43) with a connecting groove (431) in the top surface, a guide structure is arranged on the rebounding main body (41), the sliding block (43) is slidably mounted on the guide structure, the front end of the spring (42) is connected with the sliding block (43), the rear end of the spring is fixed with the rebounding main body (41), a strip-shaped open groove (52) communicated with the accommodating cavity (51) is formed in the front side portion of the top surface of the shell support (50), and the shifting block (30) can extend into the accommodating cavity (51) through the strip-shaped open groove (52) to enable the connecting tooth (31) at the bottom of the shifting block (30) to be matched with the connecting groove (431) of the sliding block;

the bottom of the front end of the rebound main body (41) is provided with a positioning block (411) which horizontally extends forwards, the outer side wall of the rear end is provided with an elastic clamping strip (412), the front end wall of the accommodating cavity (51) is provided with a flange (511) which horizontally extends backwards, a limiting groove (512) is formed between the flange (511) and the front end wall and the bottom surface of the accommodating cavity, the rear end position of the outer side surface of the shell support (50) is provided with a positioning hole (513), the rebound main body (41) extends into the accommodating cavity (51) through the strip-shaped open groove (52), the positioning block (411) is clamped into the limiting groove (512), and the elastic clamping strip (412) is embedded into the positioning hole (513);

the concave structure of the fixed guide rail (10) is sleeved in the concave structure of the movable guide rail (20), the movable guide rail (20) can horizontally move along the fixed guide rail (10), the shifting block (30) is fixedly arranged on the outer side wall of the movable guide rail (20), and the tooth shape direction of the connecting tooth (31) of the shifting block (30) vertically extends downwards into the strip-shaped open slot (52) and can form connecting fit with the connecting slot (431) of the sliding block (43);

the buckling structure comprises at least two support lugs (53) which are arranged on the outer side end of the top of the shell support (50) and extend upwards, wherein the support lugs (53) are respectively provided with a T-shaped boss (531) protruding horizontally towards the inner side, two T-shaped positioning holes (11) matched with the T-shaped bosses (531) are formed in the fixed guide rail (10), and the T-shaped bosses (531) are inserted into the T-shaped positioning holes (11).

2. The externally hung automatic recovery device for a drawer slide according to claim 1, wherein: rivet holes (532 and 12) are further formed in the support lug (53) and the fixed guide rail (10), and the support lug (53) corresponds to the rivet holes (532 and 12) in the fixed guide rail (10) one by one and is fixedly connected through rivets.

3. The externally hung automatic recovery device for a drawer slide according to claim 1, wherein: the concave structure of the movable guide rail (20) is sleeved in the concave structure of the fixed guide rail (10), the shell support (50) and the rebounding mechanism (40) contained in the containing cavity (51) of the shell support are integrally turned clockwise by 90 degrees towards one side of the outer side of the drawer to a horizontal installation position and are hung below the fixed guide rail (10) through a buckling structure, when the shell support (50) is in the horizontal installation position, the strip-shaped open slot (52) and the notch of the connection slot (431) on the top surface of the sliding block (43) face one side of the side wall of the drawer, the connection tooth at the bottom of the shifting block (30) is a hook-shaped tooth (31 ') which is bent towards the inner side of the cabinet body, and the hook-shaped tooth (31') can extend into the strip-shaped open slot (52) to form connection matching with the connection slot (431) of the sliding block.

4. The externally hung automatic recovery device for a drawer slide according to claim 3, wherein: the buckling structure comprises a shell support (50) which is a front hook (54) and a rear hook (55) which are respectively arranged at the central position and the rear end part of the top surface when the shell support is horizontally arranged, an elastic clamping block (56) is arranged between the front hook (54) and the rear hook (55), a front mounting hole (13) and a rear mounting hole (14) are formed in the side wall of the bottom of the fixed guide rail (10), a notch groove (15) is formed in the rear end part of the side wall of the bottom of the fixed guide rail (10), the front hook (54) is hooked with the side wall of the bottom of the fixed guide rail (10) through the front mounting hole (13), the elastic clamping block (56) is clamped in the rear mounting hole (14), and the rear end of the shell support (50) is hooked with the notch groove (15) in the side wall of the bottom of the fixed guide rail through the rear hook (55).

5. The externally hung automatic recovery device for a drawer slide of claim 4, wherein: and the top surface (57) of the shell bracket (50) in the horizontal installation position is an arc-shaped surface matched with the bottom side wall of the fixed guide rail.

6. The externally-hung automatic recovery device for the drawer slide rail according to any one of claims 1 to 5, wherein: the rebound mechanism (40) further comprises a damping piece (44), the damping piece (44) is installed on the rebound main body (41) through a fixing structure, and a guide rod of the damping piece (44) is connected with the sliding block (43).

7. The hanging automatic recovery device for a drawer slide of claim 6, wherein: the rebound main body (41) is hollowed along the length direction to form a containing groove (413) with an open inner side, the front end of the containing groove (413) is provided with an integrated inclined surface part (414) declining downward toward the front side, the front end of the containing groove (413) is closed, the rear end of the containing groove (413) is provided with a clamping groove (415), the spring (42) is contained in the containing groove (413) and the rear end of the spring is clamped in the clamping groove (415), the top wall of the containing groove (413) is provided with the fixed structure, the top wall of the containing groove positioned at the front side of the fixed structure forms a horizontal guide part (416), the sliding block (43) is slidably mounted on the horizontal guide part (416), the upper part of the rear end of the sliding block (43) is fixedly connected with the guide rod of the damping part (44), the lower part of the sliding block is fixedly connected with the front end of the spring (42), the horizontal guide part (416), the inclined surface part (414) and the open groove (52) are opposite to enable the shifting block (30) to be connected and matched with the sliding block (43) through the strip-shaped groove (414), the inclined surface (418) is provided with the front end of the inclined surface (418), the front end of the limiting plate (418) is provided with the protrusion (4141), and the front end of the positioning plate (417), the horizontal guide part (416), the inclined plane part (414), the positioning groove (417) and the limiting plate (418) form the guide structure.

8. The hanging automatic recovery device for a drawer slide of claim 7, wherein: the length of the strip-shaped open slot (52) is the sum of the length of the horizontal guide part (416) and the horizontal projection length of the inclined plane part (414).

9. The externally hung automatic recovery device for a drawer slide of claim 6, wherein: the outer side surfaces of the horizontal guide part (416) and the inclined plane part (414) of the resilience main body (41) are also provided with an integrated side baffle (419).

10. The hanging automatic recovery device for a drawer slide of claim 6, wherein: the slider (43) comprises a substrate (432), an upper convex part (433) and a lower convex part (434) are arranged on the outer side face of the substrate (432), the lower convex part (434) is located at the rear end of the bottom of the substrate (432) and the top face of the lower convex part (434) is a horizontal plane, a connection groove (431) which is opened upwards is formed in the top of the upper convex part (433), an upward concave notch (4333) is formed between the notch edge (4331) and the positioning protrusion (4332), the bottom face of the positioning protrusion (4332) is flush with the bottom edge of the rear end of the upper convex part (433), a horizontal guide groove (435) is formed between the positioning protrusion (4332), the bottom edge of the rear end and the top face of the lower convex part (434), the horizontal guide groove (4332) is formed between the horizontal guide portion (43416) of the upper convex part (433), the horizontal guide portion (416) is embedded in the inclined groove (43417), the inclined edge of the horizontal guide groove (43417) is embedded in the inclined groove (4321), and the inclined edge of the front portion (4321), and the horizontal guide groove (4331) can be connected with the front portion (4321) and the horizontal guide groove (4331) respectively, and the horizontal groove (4331) and the horizontal guide groove (4331) can be connected with the front portion (4321) of the horizontal groove (4321) and the horizontal groove (4331) and the front portion of the positioning groove (4331), the ramp portion (414) forms a fit.

11. The self-retracting device of claim 10, further comprising: the fixing structure comprises a rear support (4201) and a front support (4202) which are arranged on the top surface of the accommodating groove (413), the rear end of the damping piece (44) is fixedly arranged on the rear support (4201), the front end of the damping piece is limited by the front support (4202), a horizontal through groove (42021) is formed in the front support (4202), and a guide rod of the damping piece (44) penetrates through the horizontal through groove (42021) and then is connected with the rear end of the sliding block (43).

12. The self-hanging automatic recovery device for a drawer slide of claim 11, wherein: the rear ends of the upper convex portion (433) and the lower convex portion (434) are respectively provided with a T-shaped groove (4334, 4341), the front end of a guide rod of the damping piece (44) is embedded in the T-shaped groove (4334) of the upper convex portion, and the front end of the spring (42) is embedded in the T-shaped groove (4341) of the lower convex portion.