CN207100958U - A kind of three-section type synchronization drawer sliding rail - Google Patents

Abstract

The utility model provides a kind of three-section type synchronization drawer sliding rail, and it can solve synchronization structure complexity, the insecure problem of Synchronous Transmission existing for existing three-section type synchronization drawer sliding rail.It includes two groups of slide track components, two groups of slide track components are respectively arranged in drawer arranged on left and right sides, it is separately installed with Synchronization Component on two groups of slide track components, retaining rail that slide track component includes being installed on cabinet madial wall by retaining rail support, is fixed on active rail and the mid-rail being slidably connected respectively with retaining rail, active rail on drawer outside wall；Synchronization Component includes retaining rail rack, transmission mechanism and active rail rack, retaining rail rack, transmission mechanism and active rail rack are respectively arranged in the medial surface of retaining rail, mid-rail and active rail, and the tooth form of retaining rail rack and active rail rack is oppositely arranged, transmission mechanism is connected with retaining rail rack, active rail rack-driving respectively, passes through connecting rod synchronized links between the transmission mechanism of two groups of Synchronization Component.

Description

A kind of three-section type synchronization drawer sliding rail

Technical field

Slide rail field is the utility model is related to, specially a kind of three-section type synchronization drawer sliding rail.

Background technology

Synchronous in existing drawer sliding rail is mostly by adding lazy-tongs between the active rail of the wood side-guide of drawer two To realize, the lazy-tongs include synchronous connecting rod, the rack that is respectively arranged in the mounting bracket of the wood side-guide of drawer two and The synchromesh gear being respectively arranged in the active rail of the wood side-guide of drawer two, while two synchromesh gears are respectively arranged in synchronized links Both ends of the bar and engagement of two synchromesh gears is connected on each self-corresponding rack, when pulling out or inwardly promoting drawer Synchro-meshing transmission occurs for synchronous wheel and rack so as to realize drawer two under the drive of both sides active rail and synchronous connecting rod The synchronous opening or synchronizing close of wood side-guide；But for three-section type drawer sliding rail, active rail is with consolidating by mid-rail Orbit determination realizes what is be slidably connected, and mid-rail respectively can be with active rail, retaining rail in complete opening or completely closing course for drawer Between Relative sliding occurs, the fit-up gap between by mid-rail and active rail, retaining rail is influenceed and drawer load-bearing influences It is existing to be only capable of realizing that synchronization-moving lazy-tongs adapt to big specification, the three-section type drawer of big load-bearing is slided between active rail The synchronous requirement of rail.Also occur synchronously realizing the synchronization-moving railroad of middle slide rail in the art at present, it is such as public The number of opening is CN105407760A application for a patent for invention, can realize that mid-rail, active rail are synchronized with the movement it discloses a kind of Pull-off system, at least a flexible deflecting element 11 is fixed to retainer 12 and retainer at tie point 13 and tie point 15 for it 14, and the deflection roller 16 that flexible deflecting element 11 is compassingly set in front area on intermediate orbit 3 deflects 180 ° of approximation, Can carry out sequential control by the flexible deflecting element 11 between running track 2, intermediate orbit 3 and stationary orbit 4 ensures to transport Row track 2 to move and prevent the slip between track soon as two speeds of intermediate orbit 3, while two pull-outs are led It is connected to each other to part 1 via flexible deflecting element 11 in Background Region, so as to realize flexible deflecting element 11 and two centres Track 3 moves in Background Region together, that is, realizes the synchronizing moving of both sides running track 2；It is not only complicated, Er Qieqi The overall length of run of slide rail is limited, because the level interval between retainer 12 and retainer 14 directly affects slide rail expansion length Degree, the more long then slide rail length of run of horizontal range between retainer 12 and retainer 14 is longer, and retainer 12, retainer 14 Between maximum spacing be limited directly by maximum spacing between deflection roller 16 and retainer 24 again, therefore the overall exhibition of its slide rail User's requirement can not be met by opening length；Further, since it uses flexible deflecting element 11, when in its integral installation to cabinet Need manually, to adjust the elasticity of flexible deflecting element 11, to allow it to that effectively the slide track component of both sides is tensed and risen afterwards To the effect being synchronized with the movement, and whole pull-off system is installed on after cabinet flexible deflecting element 11 is adjusted again, by The problem of regulation is inconvenient often occurs in the limitation in cabinet space, so as to ensure that flexible deflecting element can be adjusted in place, Also its synchronization dependability can not just be ensured.

Utility model content

In view of the above-mentioned problems, the utility model provides a kind of three-section type synchronization drawer sliding rail, it can solve existing three section It is complicated existing for formula synchronization drawer sliding rail, slide rail length of run is shorter and the problem of user's requirement can not be met.

Its technical scheme is a kind of three-section type synchronization drawer sliding rail, and it includes two groups of slide track components, two groups of slide rail groups Part is respectively arranged in drawer arranged on left and right sides, and Synchronization Component, the slide track component bag are separately installed with two groups of slide track components The active rail and difference for include the retaining rail being installed in by retaining rail support on cabinet madial wall, being fixed on drawer outside wall The mid-rail being slidably connected with the retaining rail, active rail, it is characterised in that：The Synchronization Component includes retaining rail rack, passed Motivation structure and active rail rack, the retaining rail rack, transmission mechanism and active rail rack be respectively arranged in the retaining rail, in Between rail and the medial surface of active rail, and the tooth form of the retaining rail rack and active rail rack is oppositely arranged, the transmission mechanism It is connected respectively with the retaining rail rack, active rail rack-driving, passes through institute between the transmission mechanism of Synchronization Component described in two groups State connecting rod synchronized links.

Further, the transmission mechanism includes drive link and two groups of teeth wheel drive mechanism, the medial surface of the mid-rail Forward and backward both ends be fixed with fore-stock and after-poppet respectively, gear described in one group is separately installed with the fore-stock, after-poppet Drive mechanism, the forward and backward both ends of the drive link pass by the fore-stock, after-poppet support and with the two groups of teeth wheel respectively Dynamic structure connection, the gear transmission structure can realize the conversion of transmission direction.

Further, the gear transmission structure, which includes gear wheel and one, can realize the intersecting shaft gear of transmission direction conversion Pair, the gear pair with intersecting axles include first gear and second gear, and the gear wheel can be with the retaining rail rack, active rail Rack engaged transmission, the first gear and the gear wheel are coaxially connected, and the second gear axle is connected to the drive link End, the first gear engage connection with second gear, and when the slide track component collapses completely, the active rail rack is only Engaged with the gear wheel in the fore-stock, the retaining rail rack only engages with the gear wheel in the after-poppet.

Further, the straight-tooth angular wheel or helical teeth that the first gear and second gear are connected for intermeshing Any of angular wheel or bent tooth angular wheel.

Further, the gear wheel for the gear transmission structure being installed in the fore-stock, first gear are coaxially pacified Loaded on rotary shaft, the rotary shaft is installed on the fore-stock.

Further, the both ends of the connecting rod are connected by the after-poppet of Synchronization Component described in connecting bushing and two groups respectively Connect, the gear wheel that is installed in the after-poppet, first gear are coaxially installed on the connecting bushing.

Further, the both ends of the connecting rod are socketed in the endoporus of the connecting bushing at both ends respectively, wherein one end Connecting rod axially held out against with the endoporus of corresponding connecting bushing, be axially adjustable between the other end and corresponding connecting bushing and pass through Radial direction lock-screw is locked.

Further, the fore-stock, after-poppet are provided with Baltimore groove, and the notch of the Baltimore groove is towards cabinet side Face, the bottom surface of the side cell wall of the Baltimore groove are additionally provided with a stopper slot, and the gear wheel is by the stopper slot axial limiting.

Further, concentric axis hole is offered on the front and rear sides cell wall of the Baltimore groove of the fore-stock respectively, it is described Second gear is installed, after the drive link passes through the axis hole on the rear side cell wall from back to front in the axis hole on the cell wall of front side Connect with the second gear axle.

Further, offered on the front side cell wall of the Baltimore groove of the after-poppet concentric with the axis hole of the fore-stock Axially extending bore, the second bevel gear in the after-poppet be installed in the axially extending bore and with the rear axle of the drive link Connect.

Further, the first gear of the concurrent aces gear driving pair, second gear are respectively by crown gear, spur gear Instead of the crown gear and the gear wheel are coaxially connected, and the straight-tooth wheel shaft is connected to the end of the drive link, the hat Shape gear engages connection with spur gear, when the slide track component collapses completely the active rail rack only with the fore-stock Gear wheel engagement, the retaining rail rack only engage connection with the gear wheel in the after-poppet.

Further, the front end of the fore-stock, the rear end of after-poppet are respectively equipped with fixed part, the fixed part with it is described Mid-rail is affixed.

Further, the rear end of the fore-stock, the front end of after-poppet are respectively equipped with grab, and the mid-rail is provided with card Hole, the grab are hooked together in the hole clipping.

The beneficial effects of the utility model are：

（1）Its by retaining rail, mid-rail, active rail medial surface simultaneously install retaining rail rack, transmission mechanism with And active rail rack and transmission mechanism can be connected with retaining rail rack, active rail rack-driving respectively, so as to realize activity Being synchronized with the movement between rail and mid-rail, mid-rail and retaining rail, and lead to simultaneously between the lazy-tongs of two groups of slide track components Cross connecting rod connection and can and realize being synchronized with the movement for two groups of slide track components, ensure that drawer two during open or close Precise synchronization transmission between group slide rail；And its transmission mechanism can be with by the difference that is installed on the forward and backward both ends of mid-rail Retaining rail rack, active rail rack be meshed transmission gear transmission structure and the biography that is connected with the two groups of teeth wheel drive mechanism Lever can realize and retaining rail, the Synchronous Transmission of active rail, therefore its is simple in construction；

（2）The gear teeth between gear wheel and retaining rail rack, active rail rack has been respectively adopted in its gear transmission structure Bar links and synchronously moved to realize the conversion of transmission direction so as to reach both sides slide track component by one group of gear pair with intersecting axles The purpose of work, its reliable transmission, therefore can more ensure same between retaining rail, mid-rail and active rail inside slide track component Step transmission；

（3）Due to when slide track component collapses completely active rail rack only engaged with the gear wheel in fore-stock without with In after-poppet gear wheel engagement, retaining rail rack only engaged with the gear wheel in after-poppet without with the canine tooth in fore-stock That is when slide track component closes completely, the rear end of active rail rack will not be with the gear wheel and energy in after-poppet for wheel engagement The length that slide rail is fully deployed enough is effectively improved, so as to expand gear wheel and active rail rack, retaining rail rack greatly to the greatest extent Between transmission distance, also just expand the stretching length of run between active rail and middle ware rail, mid-rail and retaining rail, pass through Experimental verification is fully deployed length and can be reached 1.3 times of left sides of sliding track body length using the slide rail of the utility model structure The right side, so as to meet that user requires；

（4）It is axially adjustable between one end of its connecting rod and corresponding connecting bushing, so as in connecting rod and both sides slide track component The position between connecting rod and side slide track component can effectively be adjusted during device, it is convenient that it is not only adjusted, and can have Effect avoids whole drawer sliding rail from being assembled to cabinet and the inconvenience for being adjusted and bringing again later on drawer.

Brief description of the drawings

Fig. 1 is a kind of structural representation under fully closed condition of three-section type synchronization drawer sliding rail of the utility model；

Fig. 2 is a kind of structural representation under its fully unfolded position of three-section type synchronization drawer sliding rail of the utility model；

Fig. 3 is that the structure for amplifying that slide track component assembles with connecting rod in a kind of three-section type synchronization drawer sliding rail of the utility model shows It is intended to；

Fig. 4 be gear transmission structure in a kind of three-section type synchronization drawer sliding rail of the utility model in Synchronization Component the first The mplifying structure schematic diagram of first line of vision of embodiment；

Fig. 5 be gear transmission structure in a kind of three-section type synchronization drawer sliding rail of the utility model in Synchronization Component the first The mplifying structure schematic diagram of second line of vision of embodiment；

Fig. 6 is second of gear transmission structure in a kind of three-section type synchronization drawer sliding rail of the utility model in Synchronization Component The mplifying structure schematic diagram of second line of vision of embodiment；

Fig. 7 is the mplifying structure schematic diagram of fore-stock in the utility model；

Fig. 8 is the mplifying structure schematic diagram of after-poppet in the utility model；

Fig. 9 is the mplifying structure schematic diagram of the mid-rail in the utility model；

Figure 10 is the schematic diagram that connecting rod is connected by the connecting bushing at both ends with two groups of slide track components in the utility model.

Reference：10- slide track components；10 '-slide track component；11- retaining rails；12- mid-rails；121- hole clippings；122- cards Hole；13- active rails；14- retaining rail supports；20- Synchronization Component；21- retaining rail racks；22- transmission mechanisms；221- drive links； 222a- gear transmission structures；2221- gear wheels；2222- first gears；2223- second gears；2224- crown gears； 2225- spur gears；223- fore-stocks；2231- rotary shafts；2232- Baltimore grooves；2233- stopper slots；2234- axis holes；2235- axles Hole；2236- fixed parts；2237- grabs；224- after-poppets；2241- Baltimore grooves；2242- stopper slots；2243- axially extending bores； 2244- fixed parts；2245- grabs；222b- gear transmission structures；23- active rail racks；24- connecting rods；241- connecting bushings； 242- connecting bushings；243- radial direction lock-screws.

Embodiment

See Fig. 1~Fig. 7, a kind of three-section type synchronization drawer sliding rail of the utility model, it includes two groups of slide track components 10,10 ', Two groups of slide track components 10,10 ' are respectively arranged in drawer arranged on left and right sides, and synchronization is separately installed with two groups of slide track components 10,10 ' Component 20, slide track component 10,10 ' respectively include by retaining rail support 14 be installed in retaining rail 11 on cabinet madial wall, The active rail 13 being fixed on drawer outside wall and the mid-rail 12 being slidably connected respectively with retaining rail 11, active rail 13；Together Step component includes retaining rail rack 21, transmission mechanism 22 and active rail rack 23, retaining rail rack 21, transmission mechanism 22 and activity Rail rack 23 is respectively arranged in the medial surface of retaining rail 11, mid-rail 12 and active rail 13, and retaining rail rack 21 and active rail The tooth form of rack 23 is oppositely arranged, and transmission mechanism 22 is connected with retaining rail rack 21, active rail rack 23 respectively, and two groups same Pass through the synchronized links of connecting rod 24 between the transmission mechanism 22 of step component 20.

Transmission mechanism 22 includes drive link 221 and two groups of teeth wheel drive mechanism 222a, 222b, the medial surface of mid-rail 12 Forward and backward both ends are fixed with fore-stock 223 and after-poppet 224 respectively, and gear biography is separately installed with fore-stock 223, after-poppet 224 Dynamic structure 222a, 222b, the forward and backward both ends of drive link 221 are supported by fore-stock 223, after-poppet 224 and respectively with two respectively Group gear transmission structure 222a, 222b connection.

Two groups of teeth wheel drive mechanism 222a, 222b structure is identical, by taking gear transmission structure 222a as an example, gear transmission structure 222a includes gear wheel 2221 and one group of concurrent aces gear driving pair, and concurrent aces gear driving pair includes first gear 2222 and the Two gears 2223, gear wheel 2221 can be with retaining rail rack 21, the engaged transmission of active rail rack 23, first gear 2222 and canine tooths Take turns 2221 coaxially connected, the axle of second gear 2223 is connected to the end of drive link 221, and first gear 2222 is nibbled with second gear 2223 Close connection；When slide track component 10 collapses completely active rail rack 23 only engaged with the gear wheel 2221 in fore-stock 223 without with Gear wheel 2221 in after-poppet 224 engages, retaining rail rack 21 only engaged with the gear wheel 2221 in after-poppet 224 without with Gear wheel 2221 in fore-stock 223 engages；First gear 2222 and second gear 2223 therein can be that intermeshing passes The straight-tooth angular wheel or any of helical teeth angular wheel or bent tooth angular wheel of dynamic connection.

It is installed in fore-stock 223 gear transmission structure 222a gear wheel 2221, first gear 2222 is co-axially mounted In rotary shaft 2231, rotary shaft 2231 is installed on fore-stock 223；The both ends of connecting rod 24 pass through connecting bushing 241,242 respectively It is connected with the after-poppet 224 of two groups of Synchronization Component 20, it is same is installed on gear wheel 2221 in after-poppet 224, first gear 2222 Axle is installed on connecting bushing；The both ends of connecting rod 24 are socketed in the endoporus of connecting bushing 241,242 at both ends respectively, wherein one end Connecting rod 24 axially held out against with the endoporus of corresponding connecting bushing 242, between the other end and corresponding connecting bushing 241 axially can Adjust and locked by radial direction lock-screw 243, see Figure 10.

Fore-stock 223, after-poppet 224 are respectively equipped with Baltimore groove 2232,2241, the equal court of notch of Baltimore groove 2232,2241 To cabinet one side, Baltimore groove 2232, the bottom surface of 2241 side cell walls are respectively provided with a stopper slot 2233,2242 and are used for peace Gear wheel 2221 loaded on the gear transmission structure in fore-stock 223, after-poppet 224 carries out axial limiting.

Concentric axis hole 2234,2235 is offered on the front and rear sides cell wall of the Baltimore groove 2232 of fore-stock 223 respectively, Second gear 2223 is installed, drive link 221 is from back to front through the axle on rear side cell wall in the axis hole 2234 on the cell wall of front side Connect behind hole 2235 with the axle of second gear 2223.

Offered on the front side cell wall of the Baltimore groove 2241 of after-poppet 224 concentric with the axis hole of fore-stock 2234,2235 Axially extending bore 2243, the second gear 2223 in after-poppet 224 be installed in axially extending bore 2243 and with the rear end of drive link 221 Axle connects.

First gear 2222, the second gear of one group of concurrent aces gear driving pair in above-mentioned two groups of teeth wheel drive mechanism 2223 can also be replaced by 2224, spur gears 2225 of a crown gear respectively, see Fig. 6, wherein crown gear 2224 with Gear wheel 2221 is coaxially connected, and the axle of spur gear 2225 is connected to the end of drive link 221, and crown gear 2224 is nibbled with spur gear 2225 Close connection.

Front end, the rear end of after-poppet 224 of fore-stock 223 are respectively equipped with fixed part 2236,2244, fixed part 2236, 2244 is affixed with mid-rail 12 respectively；Rear end, the front end of after-poppet 224 of fore-stock 223 are respectively equipped with grab 2237,2245, Mid-rail 12 is provided with hole clipping 121,122, and grab 2237,2245 hooks together in hole clipping 121,122 respectively.

The course of work of the present utility model is detailed below down：When extracting drawer out forward, drawer drives two wood side-guides The active rail 13 of component 10,10 ' moves forward, and the synchronous reach of the active rail rack 23 in active rail 13 is so as to active rail rack 23 The gear wheel 2221 for the gear transmission structure 222a being arranged in fore-stock 223 is driven to rotate, gear wheel 2221 rotates simultaneously again Drive first gear 2222 to rotate, then drive the synchronous axial system of second gear 2223 to pass through drive link afterwards by first gear 2222 221 drive installations are in second gear 2223, first gear 2222 and canine tooth in the gear transmission structure 222b in after-poppet 224 The linkage of wheel 2221, so as to which whole mid-rail 12 is as the gear wheel 2221 in gear transmission structure 222b is along retaining rail rack 21 Straight line reach is done together, while the rotation of the gear wheel 2221 in gear transmission structure 222b is another also by the synchronous drive of connecting rod 24 Side slide track component movement, until drawer is opened completely.The action process of drawer closure is opposite with opening procedure.

Three-section type synchronization drawer sliding rail of the present utility model can also include the retaining rail support for being arranged at side slide track component Machine for automatically recovering structure and/or damping unit on 14, to improve the convenient use of whole drawer sliding rail and service life.

Claims (13)

1. a kind of three-section type synchronization drawer sliding rail, it includes two groups of slide track components（10,10 '）, two groups of slide track components（10, 10’）It is respectively arranged in drawer arranged on left and right sides, two groups of slide track components（10,10 '）On be separately installed with Synchronization Component（20）, The slide track component（10,10 '）Including passing through retaining rail support（14）The retaining rail being installed on cabinet madial wall（11）, it is fixed Active rail on drawer outside wall（13）And respectively with the retaining rail（11）, active rail（13）The mid-rail being slidably connected （12）, it is characterised in that：The Synchronization Component（20）Including retaining rail rack（21）, transmission mechanism（22）With active rail rack （23）, the retaining rail rack（21）, transmission mechanism（22）With active rail rack（23）It is respectively arranged in the retaining rail（11）、 Mid-rail（12）And active rail（13）Medial surface, and the retaining rail rack（21）With active rail rack（23）Tooth form it is opposite Set, the transmission mechanism（22）Respectively with the retaining rail rack（21）, active rail rack（23）Drive connection, described in two groups Synchronization Component（20）Transmission mechanism（22）Between pass through connecting rod（24）Synchronized links.

A kind of 2. three-section type synchronization drawer sliding rail according to claim 1, it is characterised in that：The transmission mechanism（22）Bag Include drive link（221）With two groups of teeth wheel drive mechanism（222a、222b）, the mid-rail（12）Medial surface forward and backward both ends Fore-stock is fixed with respectively（223）And after-poppet（224）, the fore-stock（223）, after-poppet（224）Inside it is separately installed with institute State gear transmission structure（222a、222b）, the drive link（221）Forward and backward both ends respectively by the fore-stock（223）, after Support（224）Support and with the two groups of teeth wheel drive mechanism（222a、222b）Connection, the gear transmission structure（222a、 222b）The conversion of transmission direction can be realized.

A kind of 3. three-section type synchronization drawer sliding rail according to claim 2, it is characterised in that：The gear transmission structure （222a、222b）Including gear wheel（2221）With a gear pair with intersecting axles that can realize transmission direction conversion, the concurrent aces tooth Wheel set includes first gear（2222）And second gear（2223）, the gear wheel（2221）Can be with the retaining rail rack （21）, active rail rack（23）Engaged transmission, the first gear（2222）With the gear wheel（2221）It is coaxially connected, it is described Second gear（2223）Axle is connected to the drive link（221）End, the first gear（2222）With second gear（2223） Engagement connection, when the slide track component（10,10 '）Active rail rack when collapsing completely（23）Only with the fore-stock （223）Interior gear wheel（2221）Engagement, the retaining rail rack（21）Only with the after-poppet（224）Interior gear wheel （2221）Engagement.

A kind of 4. three-section type synchronization drawer sliding rail according to claim 3, it is characterised in that：The first gear（2222） And second gear（2222）For the straight-tooth angular wheel or helical teeth angular wheel or bent tooth angular wheel of intermeshing drive connection Any of.

A kind of 5. three-section type synchronization drawer sliding rail according to claim 4, it is characterised in that：It is installed on the fore-stock （223）The interior gear transmission structure（222a）Gear wheel（2221）, first gear（2222）It is coaxially installed on rotary shaft （2231）, the rotary shaft（2231）It is installed on the fore-stock（223）On.

A kind of 6. three-section type synchronization drawer sliding rail according to claim 4, it is characterised in that：The connecting rod（24）Both ends Pass through connecting bushing respectively（241、242）With Synchronization Component described in two groups（20）After-poppet（224）Connection, be installed on it is described after Support（224）Interior gear wheel（2221）, first gear（2222）It is coaxially installed on the connecting bushing（241）.

A kind of 7. three-section type synchronization drawer sliding rail according to claim 6, it is characterised in that：The connecting rod（24）Both ends The connecting bushing at both ends is socketed on respectively（241、242）Endoporus in, wherein connecting rod（24）One end and corresponding connection Axle sleeve（242）Endoporus axially hold out against, the other end and corresponding connecting bushing（241）Between it is axially adjustable and pass through radially lock Screw（243）Locking.

A kind of 8. three-section type synchronization drawer sliding rail according to claim 4, it is characterised in that：The fore-stock（223）, after Support（224）It is respectively equipped with Baltimore groove（2232、2241）, the Baltimore groove（2232、2241）Notch towards cabinet one side, The Baltimore groove（2232、2241）The bottom surface of side cell wall be additionally provided with a stopper slot（2233、2242）, the gear wheel （2221）By the stopper slot（2233、2242）Axial limiting.

A kind of 9. three-section type synchronization drawer sliding rail according to claim 8, it is characterised in that：The fore-stock（223）'s Baltimore groove（2232）Front and rear sides cell wall on offer concentric axis hole respectively（2234、2235）, on the front side cell wall Axis hole（2234）Second gear is inside installed（2223）, the drive link（221）Pass through from back to front on the rear side cell wall Axis hole（2235）Afterwards with the second gear（2223）Axle connects.

A kind of 10. three-section type synchronization drawer sliding rail according to claim 9, it is characterised in that：The after-poppet（224）'s Baltimore groove（2241）Front side cell wall on offer axis hole with the fore-stock（2234、2235）Concentric axially extending bore （2243）, the after-poppet（224）Interior second gear（2222）It is installed on the axially extending bore（2243）It is interior and with the biography Lever（221）Rear axle connect.

11. according to any described a kind of three-section type synchronization drawer sliding rail in claim 3~10, it is characterised in that：The phase The first gear of gear with intersecting axes transmission（2222）, second gear（2223）Respectively by crown gear（2224）, spur gear （2225）Instead of the crown gear（2224）With the gear wheel（2221）It is coaxially connected, the spur gear（2225）Axle connects In the drive link（221）End, the crown gear（2221）With spur gear（2225）Engagement connection, when the slide rail group Active rail rack when part collapses completely（23）Only with the fore-stock（223）Interior gear wheel（2221）Engage, be described solid Orbit determination rack（21）Only with the after-poppet（224）Interior gear wheel（2221）Engagement connection.

A kind of 12. three-section type synchronization drawer sliding rail according to claim 11, it is characterised in that：The fore-stock（223） Front end, after-poppet（224）Rear end be respectively equipped with fixed part（2236、2244）, the fixed part（2236、2244）With it is described Mid-rail（12）It is affixed.

A kind of 13. three-section type synchronization drawer sliding rail according to claim 12, it is characterised in that：The fore-stock（223） Rear end, after-poppet（224）Front end be respectively equipped with grab（2237、2245）, the mid-rail（12）Forward and backward side open respectively There is hole clipping（121）, the grab（2237、2245）Hook together in the hole clipping（121）It is interior.