WO2021120367A1 - 一种新式抽屉同步导轨 - Google Patents

一种新式抽屉同步导轨 Download PDF

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Publication number
WO2021120367A1
WO2021120367A1 PCT/CN2020/073085 CN2020073085W WO2021120367A1 WO 2021120367 A1 WO2021120367 A1 WO 2021120367A1 CN 2020073085 W CN2020073085 W CN 2020073085W WO 2021120367 A1 WO2021120367 A1 WO 2021120367A1
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WO
WIPO (PCT)
Prior art keywords
synchronous
gear
rack
slide rail
guide rail
Prior art date
Application number
PCT/CN2020/073085
Other languages
English (en)
French (fr)
Inventor
资斌
祝灼芳
Original Assignee
广东库博精密科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 广东库博精密科技有限公司 filed Critical 广东库博精密科技有限公司
Priority to KR1020227013702A priority Critical patent/KR20220065064A/ko
Priority to EP20901960.3A priority patent/EP4079192B1/en
Priority to JP2022524145A priority patent/JP7400094B2/ja
Priority to US17/776,589 priority patent/US11857071B2/en
Publication of WO2021120367A1 publication Critical patent/WO2021120367A1/zh

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
    • A47B88/40—Sliding drawers; Slides or guides therefor
    • A47B88/44—Sequencing or synchronisation of drawer slides or functional units
    • A47B88/45—Synchronisation of cooperating drawer slides, i.e. with a coordination of the rail movement of different drawer slides
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
    • A47B88/40—Sliding drawers; Slides or guides therefor
    • A47B88/497—Sliding drawers; Slides or guides therefor with other guiding mechanisms, e.g. scissor mechanisms
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
    • A47B88/40—Sliding drawers; Slides or guides therefor
    • A47B88/44—Sequencing or synchronisation of drawer slides or functional units
    • A47B88/447—Simultaneous movement of rails within drawer slides, i.e. with a coordination of movement with all rail elements moving at the same time
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
    • A47B88/40—Sliding drawers; Slides or guides therefor
    • A47B88/44—Sequencing or synchronisation of drawer slides or functional units
    • A47B88/443—Successive movement of rails within drawer slides, i.e. at least one rail element is not moving during the movement of other elements
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
    • A47B88/40—Sliding drawers; Slides or guides therefor
    • A47B88/49—Sliding drawers; Slides or guides therefor with double extensible guides or parts
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2210/00—General construction of drawers, guides and guide devices
    • A47B2210/0002—Guide construction for drawers
    • A47B2210/0013—Guide construction for drawers having a pinion on the intermediate drawer rail, between the upper and lower rail
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2210/00—General construction of drawers, guides and guide devices
    • A47B2210/0002—Guide construction for drawers
    • A47B2210/0029—Guide bearing means
    • A47B2210/0032—Balls
    • A47B2210/0035—Balls cages therefor, e.g. for telescopic slides
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2210/00—General construction of drawers, guides and guide devices
    • A47B2210/0002—Guide construction for drawers
    • A47B2210/0064—Guide sequencing or synchronisation
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2210/00—General construction of drawers, guides and guide devices
    • A47B2210/0002—Guide construction for drawers
    • A47B2210/0064—Guide sequencing or synchronisation
    • A47B2210/007—Three slide synchronisation
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
    • A47B88/40—Sliding drawers; Slides or guides therefor
    • A47B88/49—Sliding drawers; Slides or guides therefor with double extensible guides or parts
    • A47B88/493—Sliding drawers; Slides or guides therefor with double extensible guides or parts with rollers, ball bearings, wheels, or the like

Definitions

  • the invention relates to the technical field of drawer slide rail structures, in particular to a novel drawer synchronous rail.
  • Normal drawer guide rails are divided into upper, middle and lower sections. There are rollers or balls between the upper rail and the middle rail, and between the middle rail and the lower rail. The rollers and balls are constrained by the cage. Because the drawer moves between the guide rails. Friction, so it saves effort. In the use of three-section guide rails, it was found that due to differences in the accuracy of parts and assembly methods, the rolling friction between the rails was uneven, and the opening and closing sequence between the slide rails was uncertain, resulting in drag on the left and right sides of the drawer. The dynamic resistance is inconsistent and affects the feel, which needs to be improved.
  • a drawer guide rail discloses the use of synchronizing elements to mesh and cooperate with the first synchronizing sliding bar and the second synchronizing sliding bar to ensure the synchronization and stability of the fixed slide rail, the middle slide rail and the movable slide rail during the drawing process .
  • the use of this kind of gear and rack matching structure to maintain the proportional relationship of motion requires a relatively fixed center distance between the gear and the rack. If the center distance becomes smaller, there will be no gap or even interference between the teeth during meshing. If the center distance becomes larger, the gear and rack will separate, which will weaken the meshing strength, and if the center distance becomes larger, the meshing strength will be weakened, and the movement will not be smooth, there will be a sense of frustration, or even completely separated. , The transmission fails. CN201910732110.X applied for in this application,
  • the guide rail has a swing amount during use, so that the movable slide rail (upper rail) swings clockwise or counterclockwise relative to the fixed slide rail or the middle slide rail, which causes the center distance to become larger or smaller, and the guide rail The pulling action appears unstable.
  • the purpose of the present invention is to provide a new drawer synchronization guide rail with good stability.
  • the present invention provides a new synchronous guide rail for drawers, which includes a fixed slide rail, a middle slide rail and a movable slide rail that are slidably connected to each other, wherein the middle slide rail is provided with a synchronization gear, the The movable slide rail and the fixed slide rail are respectively fixed with a first synchronization rack and a second synchronization rack arranged in horizontally opposite directions. The left and right sides of the synchronization gear are respectively connected with the toothed portion and the second synchronization rack of the first synchronization rack.
  • the tooth-shaped part of the synchronous rack is meshed and coordinated, and the first synchronous rack is provided with an elastic part, wherein the tooth-shaped part of the first synchronous rack is elastically compressed under the action of the elastic stress of the elastic part.
  • the synchronous gear is provided with at least one limit wheel for conflicting cooperation with the first synchronous rack and the second synchronous rack.
  • synchronization gear and the limit wheel are arranged coaxially.
  • the axis of any one of the limit wheels is parallel to the axis of the synchronous gear.
  • first and second synchronizing racks are respectively formed with a first pressure-bearing portion and a second pressure-bearing portion that are in contact with the outer circumferential surface of the limit wheel.
  • the limit wheel is integrally formed under the synchronous gear, and the diameter of the limit wheel is similar to the pitch circle diameter of the synchronous gear.
  • gear seat for the rotation installation of the synchronous gear
  • the gear seat is installed at the bottom end of the outer side wall of the middle slide rail.
  • a vertically extending elliptical shaft is formed on the gear seat, a circular hole matching the elliptical shaft is opened at the center position of the synchronous gear, and the outer wall of the elliptical shaft in the minor axis direction is in contact with the elliptical shaft.
  • An adjustment gap is left between the inner walls of the circular hole, so that the synchronous gear can be finely adjusted with the gear seat in the direction of the minor axis of the elliptical axis.
  • one end of the gear base is hinged on the middle slide rail so that the gear base can swing around the hinge shaft.
  • first synchronization rack is formed with a first clamping portion
  • second synchronization rack is formed with a second clamping portion, wherein the first clamping portion is slidably clamped with the second clamping portion In this way, the first synchronous rack and the second synchronous rack can only slide relatively in the drawing direction.
  • first holder is provided between the fixed slide rail and the middle slide rail
  • second holder is provided between the middle slide rail and the movable slide rail
  • the beneficial effect of the present invention is that the elastic part on the first synchronizing rack generates inward elastic stress on its toothed part, so that the toothed part always elastically internally presses the synchronizing gear, so that the toothed part and the synchronizing gear elastically adapt The center distance changes to enhance the stability of the guide rail.
  • Fig. 1 is a schematic structural diagram of the drawer guide rail of the first embodiment.
  • Fig. 2 is a cross-sectional view of the drawer rail of the embodiment.
  • Fig. 3 is an exploded view of the drawer guide rail of the first embodiment.
  • Fig. 4 is a schematic diagram of a synchronous gear and a gear seat of the first embodiment.
  • Figure 5 is a cross-sectional view of the synchronizing gear and the gear seat of the first embodiment.
  • Fig. 6 is a schematic diagram of the first synchronous rack of the embodiment.
  • Fig. 7 is a schematic diagram of the movable sliding rail of the second embodiment.
  • Fig. 8 is a schematic diagram of the middle slide rail and the gear seat of the second embodiment.
  • Fig. 9 is a schematic diagram of the synchronizing gear and the gear seat of the third embodiment.
  • 1- fixed slide rail 2- middle slide rail, 3- movable slide rail, 4- first cage, 5- second cage, 6-first synchronous rack, 61-elastic part, 7-th Two synchronous racks, 8-synchronous gear, 9-gear seat.
  • a new type of drawer synchronization guide rail includes a fixed slide rail 1, a middle slide rail 2 and a movable slide rail 3 that are slidably connected to each other, wherein the fixed slide rail 1
  • a first retainer 4 is provided between the middle slide rail 2
  • a second retainer 5 is provided between the middle slide rail 2 and the movable slide rail 3.
  • the first retainer 4 and the second retainer 5 of this embodiment are both It consists of a ball mounting frame and a number of balls mounted on the ball mounting frame, and the first cage 4 and the second cage 5 of the present application are not provided with racks, and the first cage 4 and the second cage are used 5 As a slidable support for the fixed slide rail 1 and the middle slide rail 2, the middle slide rail 2 and the movable slide rail 3.
  • the drawing direction of the guide rail is defined as the front-rear direction, and the drawing direction perpendicular to the drawing direction is the left-right direction.
  • this embodiment also includes a synchronizing gear 8, a first synchronizing rack 6, a second synchronizing rack 7 and a gear base 9, wherein the first synchronizing rack 6 and the second synchronizing rack 7 are independently fixedly arranged on On the movable sliding rail 3 and the fixed sliding rail 1, that is, the second synchronous rack 7 of this embodiment is fixedly arranged on the second outer side wall 11 of the fixed sliding rail 1, and the toothed portion of the second synchronous rack 7 is horizontal It is arranged outward and extends along the drawing direction. Specifically, the upper end position of the second synchronization rack 7 is fixed on the second outer side wall 11, and the toothed portion of the second synchronization rack 7 is located at the lower end position.
  • the first synchronous rack 6 of this embodiment can be fixedly arranged on the first outer side wall 31 of the movable sliding rail 3, and the toothed portion of the first synchronous rack 6 is arranged horizontally inward and extending in the drawing direction. Specifically, the first synchronous rack 6 The upper end position of a synchronizing rack 6 is fixed on the first outer side wall 31, and the toothed portion of the first synchronizing rack 6 is located at its lower end position. The toothed portion of the first synchronizing rack 6 and the toothed portion of the second synchronizing rack 7 are arranged horizontally opposite to each other.
  • the first synchronizing rack 6 is also integrally formed with an elastic portion 61, wherein the elastic portion 61 is located in the middle of the first synchronizing rack 6 and extends along the drawing direction. The deformation causes the lower end to generate inward elastic stress on the toothed portion located at the lower end of the first synchronous rack 6.
  • the gear seat 9 has a U-shaped structure and a vertically extending elliptical shaft is formed on the gear seat 9, and a circular hole that fits and fits with the elliptical shaft is opened at the center of the synchronous gear 8 to realize
  • the synchronous gear 8 is rotatably mounted on the gear seat 9.
  • An elastic catch is formed on the top of the elliptical shaft for fixing and assembling the gear seat 9.
  • an adjustment gap is reserved between the outer wall of the elliptical axis in the minor axis direction and the inner wall of the circular hole (the outer wall of the elliptical axis in the major axis direction is in contact with the inner wall of the circular hole), so that the circular hole can be
  • the relative displacement adjustment with the elliptical axis in the minor axis direction allows the synchronous gear 8 to be finely adjusted with the gear seat 9 in the left-right direction.
  • the upper part of the gear seat 9 is fixedly installed at the bottom end of the outer side wall of the middle slide rail 2, so that the synchronization gear 8 and the gear seat 9 are fixedly installed on the middle slide rail 2; installed to the left and right sides of the synchronization gear on the middle slide rail 2.
  • the two sides respectively mesh and cooperate with the tooth-shaped part of the first synchronous rack 6 and the tooth-shaped part of the second synchronous rack 7, effectively ensuring that the fixed slide rail 1, the middle slide rail 2 and the movable slide rail 3 are in the drawing process Synchronization and stability in the process.
  • the elastic stress of the elastic portion 61 on the toothed portion of the first synchronous rack 6 is used to make the toothed portion of the first synchronous rack 6 elastically press against the synchronous gear 8, so that the synchronous gear 8 and the first synchronous gear 8 are pressed together.
  • the toothed part of a synchronous rack 6 realizes elastic contact, which can effectively adapt to the change of the center distance caused by the swing of the movable sliding rail 3, and ensures that the synchronous gear 8 always cooperates with the toothed part.
  • the synchronization gear can be adjusted slightly by combining the adjustment gap, which is more convenient for installation and more convenient for the meshing and cooperation of the two gear parts.
  • a coaxially arranged limit wheel is formed on the synchronous gear, and the limit wheel is integrally formed below the synchronous gear.
  • the first synchronous rack 6 and the second synchronous rack 7 are respectively formed with a limit wheel and a limit wheel.
  • the first pressure-bearing part and the second pressure-bearing part of the circumferential surface of the bit wheel are in conflicting fit, wherein the first pressure-bearing part and the second pressure-bearing part can be matched with the limit wheel by the collision, so that the diameter of the limit wheel is
  • the width serves as the minimum center distance to prevent the center distance between the synchronous gear 8 and the toothed portion of the second synchronous rack 7 from being too small.
  • the limit wheel 81 of this embodiment is integrally formed under the synchronous gear 8, and the diameter of the limit wheel 81 is equal to the pitch circle diameter of the synchronous gear 8.
  • the difference between the second embodiment and the first embodiment is that: the bottom end of the first synchronous rack 6 is formed with a first clamping portion extending in the drawing direction, and the second The bottom end of the synchronous rack 7 is formed with a second clamping portion along the drawing direction, wherein the second clamping portion is a U-shaped structure and is provided for sliding and embedding of the first clamping portion, that is, the first clamping portion and The second clamping part is in sliding clamping engagement.
  • the first synchronous rack 6 and the second synchronous rack 7 can only slide relative to each other in the pulling direction, which limits the displacement of the first synchronous rack 6 and the second synchronous rack 7 in the left and right directions, and fixes the synchronization.
  • the center distance between the gear 8 and the first synchronous rack 6 and the second synchronous rack 7 enhances the stability of the pulling action of the synchronous guide rail.
  • one end of the gear seat 9 is hinged to the middle slide rail 2 by a pin, and the other end is movably clamped to the middle slide rail 2, so that the gear seat 9 can swing around the hinge axis to facilitate
  • the swinging action of the gear seat 9 synchronously drives the synchronous gear 8 to perform swing adjustment, so that the synchronous gear 8 can adapt to the relative position between the first synchronous rack 6 and the second synchronous rack 7.
  • the difference compared with the first embodiment is that it includes two limit wheels 81 with different shafts mounted on the gear seat 9, among which, two limit wheels 81
  • the axes of the two limit wheels 81 are parallel to the axis of the synchronous gear 8, and the axes of the two limit wheels 81 and the axis of the synchronous gear 8 are both located in the pulling direction of the guide rail.
  • the specifications and diameter widths of the two limit wheels 81 are the same, so that the first A synchronizing rack 6 and a second synchronizing rack 7 are respectively formed with a first pressure-bearing portion and a second pressure-bearing portion that are in contact with the outer peripheral surfaces of the two limit wheels 81.

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  • Drawers Of Furniture (AREA)

Abstract

一种新式抽屉同步导轨，包括相互滑动连接的定滑轨（1）、中滑轨（2）及动滑轨（3），其中，该中滑轨（2）上设有同步齿轮（8），该动滑轨（3）和定滑轨（1）上分别固定有呈水平相对布置的第一同步齿条（6）和第二同步齿条（7），该同步齿轮（2）的左右两侧分别与第一同步齿条（6）的齿形部和第二同步齿条（7）的齿形部啮合协同配合，该第一同步齿条（6）上设有弹性部（61），其中，该第一同步齿条（6）的齿形部在该弹性部（61）的弹性应力作用下被弹性压向同步齿轮（8）；该同步齿轮（8）上设有至少一个用于分别与第一同步齿条（6）和第二同步齿条（7）相抵触配合的限位轮（81）。

Description

一种新式抽屉同步导轨 技术领域
本发明涉及抽屉滑轨结构的技术领域，尤其是涉及一种新式抽屉同步导轨。
背景技术
通常的抽屉导轨分上、中、下三节，上轨与中轨、中轨与下轨之间都有滚柱或者滚珠，滚柱和滚珠由保持架约束，由于抽屉移动时导轨之间是滚动摩擦，所以比较省力。在三节导轨的使用中，人们发现由于零件的精度以及装配手段存在差异，造成轨与轨之间的滚动摩擦力不均匀，滑轨之间开合的顺序不确定，致使抽屉左右两侧的拖动阻力不一致，影响手感，这点是需要改进的。
一种抽屉导轨中公开了利用同步元件与第一同步滑条和第二同步滑条啮合协同配合，来保证定滑轨、中滑轨及动滑轨在抽拉过程中的同步性及稳定性。采用此类的齿轮与齿条配合结构来保持运动比例关系，需要齿轮与齿条之间需要相对固定的中心距，其中，如果中心距变小时，啮合时齿与齿之间无间隙甚至干涉，则摩擦力大、磨损严重，导轨运动有噪音和固定频率的跳动；如果中心距变大，则齿轮与齿条分离，轻则削弱啮合强度，重则运动不顺畅、有顿挫感，甚至完全分离，传动失效。本申请所申请的CN201910732110.X，
而导轨在使用过程中存在有一摆动量，从而使动滑轨(上轨)相对定滑轨或中滑轨出现顺时针或逆时针摆动，进而造成中心距变大或变小的情况，使导轨的抽拉动作出现不稳定的情况。
发明内容
针对现有技术的不足，本发明的目的在于提供一种稳定性好的新式抽屉同步导轨。
为实现上述目的，本发明提供的方案为一种新式抽屉同步导轨，包括相互滑动连接的定滑轨、中滑轨及动滑轨，其中，所述中滑轨上设有同步齿轮，所述动滑轨和定滑轨上分别固定有呈水平相对布置的第一同步齿条和第二同步齿条，所述同步齿轮的左右两侧分别与第一同步齿条的齿形部和第二同步齿条的齿形部啮合协同配合，所述第一同步齿条上设有弹性部，其中，所述第一同步齿条的齿形部在所述弹性部的弹性应力作用下被弹性压向同步齿轮；所述同步齿轮上设有至少一个用于分别与第一同步齿条和第二同步齿条相抵触配合的限位轮。
进一步，所述同步齿轮与限位轮呈同轴布置。
进一步，包括有两个限位轮，任一所述限位轮轴线与同步齿轮的轴线相平行。
进一步，所述第一同步齿条和第二同步齿条上分别成型有与限位轮外周面相抵触配合的第一承压部和第二承压部。
进一步，所述限位轮一体成型于同步齿轮的下方，限位轮的直径与同步齿轮的节圆直径相近。
进一步，还包括供同步齿轮转动安装的齿轮座，并且所述齿轮座安装于中滑轨外侧壁底端。
进一步，所述齿轮座上成型上有一竖向延伸的椭圆轴，所述同步齿轮中心位置开有与椭圆轴相配合的圆形孔，其中，所述椭圆轴在短轴方向上的外壁与所述圆形孔的内壁之间留有调节间隙，从而令同步齿轮可在椭圆轴短轴方向上与齿轮座作微调节。
进一步，所述齿轮座一端铰接在中滑轨上以使齿轮座可绕该铰接轴进行摆动。
进一步，所述第一同步齿条成型有第一卡接部，所述第二同步齿条成型有第二卡接部，其中，通过第一卡接部与第二卡接部相滑动卡接以使第一同步齿条与第二同步齿条仅可沿抽拉方向相对滑动。
进一步，所述定滑轨与中滑轨之间设有第一保持架，中滑轨与动滑轨之间设有第二保持架。
本发明的有益效果为：通过第一同步齿条上的弹性部对其齿形部产生向内的弹性应力，从而令齿形部始终弹性内压同步齿轮，使齿形部与同步齿轮弹性适应中心距变化，增强导轨的稳定性。
附图说明
图1为实施例一的抽屉导轨的结构示意图。
图2为实施例的抽屉导轨的剖视图。
图3为实施例一的抽屉导轨的爆炸图。
图4为实施例一的同步齿轮及齿轮座的示意图。
图5为实施例一的同步齿轮及齿轮座的剖视图。
图6为实施例的第一同步齿条的示意图。
图7为实施例二的动滑轨的示意图。
图8为实施例二的中滑轨与齿轮座的示意图。
图9为实施例三的同步齿轮及齿轮座的示意图。
其中，1-定滑轨，2-中滑轨，3-动滑轨，4-第一保持架，5-第二保持架，6-第一同步齿条，61-弹性部，7-第二同步齿条，8-同步齿轮，9-齿轮座。
具体实施方式
为了便于理解本发明，下面参照附图对本发明进行更全面的描述。附图中给出了本发明的较佳实施方式。但是，本发明可以以许多不同的形式来实现，并不限于本文所描述的实施方式。提供这些实施方式的目的是使对本发明的公开内容理解得更加透彻全面。需要说明的是，本发明所述“第一”、“第二”不代表具体的数量及顺序，仅仅用于名称的区分。
实施例一：
参见附图1-6所示，在本实施例中，一种新式抽屉同步导轨，包括有相互滑动连接的定滑轨1、中滑轨2及动滑轨3，其中，在定滑轨1与中滑轨2之间设有第一保持架4，中滑轨2与动滑轨3之间设有第二保持架5，本实施例的第一保持架4和第二保持架5均由滚珠安装架以及若干个安装在滚珠安装架上的滚珠，并且本申请的第一保持架4和第二保持架5上均不设有齿条，利用第一保持架4和第二保持架5作为定滑轨1与中滑轨2、中滑轨2与动滑轨3的可滑动地支撑。本实施例的定义导轨抽拉方向为前后方向，垂直于抽拉方向为左右方向。
在本实施例中，还包括同步齿轮8、第一同步齿条6、第二同步齿条7和齿轮座9，其中，第一同步齿条6和第二同步齿条7分别独立固定设于动滑轨3和定滑轨1上，即，本实施例的第二同步齿条7固定设于定滑轨1的第二外侧壁11上，并且第二同步齿条7的齿形部水平朝外且沿抽拉方向延伸布置，具体地，第二同步齿条7的上端位置固定于第二外侧壁11上，第二同步齿条7的齿形部位于其下端位置。本实施的第一同步齿条6可固定设于动滑轨3的第一外侧壁31上，第一同步齿条6的齿形部水平朝内且沿抽拉方向延伸布置，具体地，第一同步齿条6的上端位置固定于第一外侧壁31上，第一同步齿条6的齿形部位于其下端位置。第一同步齿条6的齿形部与第二同步齿条7的齿形部呈水平相对布置。
在本实施例中，第一同步齿条6还一体成型有弹性部61，其中，弹性部61位于第一同步齿条6的中部位置且沿抽拉方向延伸布置，所述弹性部61进行预变形使其下端对位于第一同步齿条6下端位置的齿形部产生向内的弹性应力。
在本实施例中，齿轮座9呈U型结构且在齿轮座9上成型有竖向延伸的椭圆轴，同步齿轮8中心位置开有与椭圆轴相嵌装配合的圆形孔，从而实现了同步齿轮8转动安装于齿轮座9上。在椭圆轴的顶端成型有弹性扣爪以用于对齿轮座9进行固定装配。另外，椭圆轴在短轴方向上的外壁与圆形孔的内壁之间预留调节间隙(椭圆轴在长轴方向上的外壁与与圆形孔的内壁相接触)，从而使得圆形孔可与椭圆轴在短轴方向上作相对位移调节，进而令同步齿轮8可在左右方向上与齿轮座9作微调节。
进一步，齿轮座9上部固定安装在中滑轨2的外侧壁底端位置，以实现同步齿轮8及齿轮座9固定安装在中滑轨2上；安装至中滑轨2上的同步齿轮的左右两侧分别与第一同步齿条6的齿形部和第二同步齿条7的齿形部啮合协同配合，有效地保证定滑轨1、中滑轨2及动滑轨3在抽拉过程中的同步性及稳定性。
在抽拉过程中，利用弹性部61对第一同步齿条6的齿形部的弹性应力，使第一同步齿条6的齿形部弹性压向同步齿轮8，从而使同步齿轮8与第一同步齿条6的齿形部实现弹性接触，可有效地适应动滑轨3摆动引起中心距变化，确保同步齿轮8始终与齿形部相协同配合。另外，通过结合调节间隙使同步齿轮可作微调节，安装更方便及更便于两齿轮部的啮合配合。
在本实施例中，同步齿轮上成型有同轴布置的限位轮，限位轮一体成型成型于同步齿轮的下方，第一同步齿条6和第二同步齿条7上分别成型有与限位轮周面相抵触配合的第一承压部和第二承压部，其中，通过第一承压部和第二承压部可与限位轮之间的抵触配合，令限位轮的径宽作为最小的中心距，防止同步齿轮8与第二同步齿条7的齿形部之间的中心距过小的情况。
进一步，本实施例的限位轮81一体成型于同步齿轮8的下方，限位轮81的直径与同步齿轮8的节圆直径相等。
基于上述的各部件结构构成了新式的抽屉同步导轨，抽拉动作更加顺畅、稳定。
实施例二：
参见附图7和附图8所示，本实施例二与实施例一相比较的区别特征在于：第一同步齿条6底端成型有沿抽拉方向延伸的第一卡接部，第二同步齿条7底端成型有沿抽拉方向的第二卡接部，其中，第二卡接部为U型结构且供第一卡接部相滑动嵌装，即，第一卡接部与第二卡接部相滑动卡接配合。进而实现了第一同步齿条6与第二同步齿条7仅可沿抽拉方向相对滑动，起到对第一同步齿条6与第二同步齿条7在左右方向的位移限制，固定同步齿轮8与第一同步齿条6及第二同步齿条7之间的中心距，增强同步导轨抽拉动作的稳定性。
在本实施例中，齿轮座9的一端通过销钉铰接在中滑轨2上且其另一端为活动卡接至中滑轨2上，从而使齿轮座9可绕该铰接轴进行摆动，以便于通过齿轮座9的摆动动作同步带动同步齿轮8进行摆动调节，令同步齿轮8可适应第一同步齿条6与第二同步齿条7之间的相对位置。
实施例三：
参见附图9所示，在本实施例中，与实施例一相比较的区别特征在于：包括有两个不同轴安 装于齿轮座9上的限位轮81，其中，两限位轮81的轴线均与同步齿轮8的轴线相平行，并且，两限位轮81的轴线和同步齿轮8的轴线均位于导轨抽拉方向上，两限位轮81的规格及径宽相同，进而使得第一同步齿条6和第二同步齿条7上分别成型有与两限位轮81外周面相抵触配合的第一承压部和第二承压部。
以上所述之实施例仅为本发明的较佳实施例，并非对本发明做任何形式上的限制。任何熟悉本领域的技术人员，在不脱离本发明技术方案范围情况下，利用上述揭示的技术内容对本发明技术方案作出更多可能的变动和润饰，或修改均为本发明的等效实施例。故凡未脱离本发明技术方案的内容，依据本发明之思路所作的等同等效变化，均应涵盖于本发明的保护范围内。

Claims (10)

  1. 一种新式抽屉同步导轨，包括相互滑动连接的定滑轨(1)、中滑轨(2)及动滑轨(3)，其中，所述中滑轨(2)上设有同步齿轮(8)，所述动滑轨(3)和定滑轨(1)上分别固定有呈水平相对布置的第一同步齿条(6)和第二同步齿条(7)，所述同步齿轮(8)的左右两侧分别与第一同步齿条(6)的齿形部和第二同步齿条(7)的齿形部啮合协同配合，其特征在于：所述第一同步齿条(6)上设有弹性部(61)，其中，所述第一同步齿条的齿形部在所述弹性部(61)的弹性应力作用下被弹性压向同步齿轮(8)；所述同步齿轮(8)上设有至少一个用于分别与第一同步齿条(6)和第二同步齿条(7)相抵触配合的限位轮(81)。
  2. 根据权利要求1所述的一种新式抽屉同步导轨，其特征在于：所述同步齿轮(8)与限位轮(81)呈同轴布置。
  3. 根据权利要求1所述的一种新式抽屉同步导轨，其特征在于：包括有两个不同轴布置限位轮(81)，任一所述限位轮(81)的轴线与同步齿轮(8)的轴线相平行。
  4. 根据权利要求2或3所述的一种新式抽屉同步导轨，其特征在于：所述第一同步齿条(6)和第二同步齿条(7)上分别成型有与限位轮(81)外周面相抵触配合的第一承压部和第二承压部。
  5. 根据权利要求2所述的一种新式抽屉同步导轨，其特征在于：所述限位轮(81)一体成型于同步齿轮(8)的下方，限位轮(81)的直径与同步齿轮(8)的节圆直径相近。
  6. 根据权利要求1所述的一种新式抽屉同步导轨，其特征在于：还包括供同步齿轮(8)转动安装的齿轮座(9)，并且所述齿轮座(9)安装于中滑轨(2)外侧壁底端。
  7. 根据权利要求5所述的一种新式抽屉同步导轨，其特征在于：所述齿轮座(9)上成型上有一竖向延伸的椭圆轴，所述同步齿轮(8)中心位置开有与椭圆轴相配合的圆形孔，其中，所述椭圆轴在短轴方向上的外壁与所述圆形孔的内壁之间留有调节间隙(82)，从而令同步齿轮(8)可在椭圆轴短轴方向上与齿轮座(9)作微调节。
  8. 根据权利要求5所述的一种新式抽屉同步导轨，其特征在于：所述齿轮座(9)一端铰接在中滑轨(2)上以使齿轮座(9)可绕该铰接轴进行摆动。
  9. 根据权利要求1所述的一种新式抽屉同步导轨，其特征在于：所述第一同步齿条(6)成型有第一卡接部(62)，所述第二同步齿条(7)成型有第二卡接部(71)，其中，通过第一卡接部(62)与第二卡接部(71)相滑动卡接以使第一同步齿条(6)与第二同步齿条(7)仅可沿抽拉方向相对滑动。
  10. 根据权利要求1所述的一种新式抽屉同步导轨，其特征在于：所述定滑轨(1)与中滑轨(2)之间设有第一保持架(4)，中滑轨(2)与动滑轨(3)之间设有第二保持架(5)。
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