WO2024067879A1 - 一种椅子及其塑胶自载重底盘 - Google Patents

一种椅子及其塑胶自载重底盘 Download PDF

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Publication number
WO2024067879A1
WO2024067879A1 PCT/CN2023/123224 CN2023123224W WO2024067879A1 WO 2024067879 A1 WO2024067879 A1 WO 2024067879A1 CN 2023123224 W CN2023123224 W CN 2023123224W WO 2024067879 A1 WO2024067879 A1 WO 2024067879A1
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Prior art keywords
seat
hinge shaft
base
hinged
hinge
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PCT/CN2023/123224
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English (en)
French (fr)
Inventor
王江林
王郑兴
李德才
鲍家华
金剑
Original Assignee
恒林家居股份有限公司
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Application filed by 恒林家居股份有限公司 filed Critical 恒林家居股份有限公司
Publication of WO2024067879A1 publication Critical patent/WO2024067879A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/002—Chair or stool bases

Definitions

  • the invention relates to the field of home furnishings, and in particular to a chair and a plastic self-loading chassis thereof.
  • the chassis of a chair also known as a tray, is an important part of the chair that connects the seat, back and legs.
  • the current swivel chair tray is generally composed of an upper tray, a lower support beam, a rotating shaft and a spring device. After the upper turntable is fixed to the back of the swivel chair seat, the swivel chair can be tilted and reclined appropriately around the rotating shaft and can be automatically restored.
  • Patent document with publication number CN102846068 discloses a swivel chair chassis, including a base plate connected to a gas rod, the base plate supporting the entire chassis and the seat and backrest; a support plate is provided on the left and right sides of the base plate in the vertical direction, the support plate is fixedly connected to the base plate, a seat plate for mounting the seat is provided above the two support plates in the horizontal direction, the front and rear sides of the base plate are respectively provided with a support frame and a backrest bracket inclined toward the front of the swivel chair, the lower parts of the support frame and the backrest bracket are hinged to the two support plates, the front and rear sides of the seat plate are respectively hinged to the top of the support frame and the backrest bracket, the backrest bracket is connected to the backrest through a connecting steel plate, and the backrest bracket is connected to an elastic reset device for tilting it toward the front of the swivel chair.
  • the support frame is in the shape of a square, including two pins arranged in parallel up and down, and the two pins are fixedly connected by two connecting rods arranged in parallel left and right; of course, a connecting rod can also be provided;
  • the backrest bracket is also provided with two pins arranged in parallel up and down, and the pins of the backrest bracket are inserted into the side panels on the left and right sides of the backrest bracket;
  • the pins at the bottom of the support frame and the backrest bracket are hinged to the support plate, and four lugs are provided at the bottom of the seat plate, and the seat plate is hinged to the pins at the top of the support frame and the backrest bracket by means of the lugs.
  • the elastic reset device is a spring, one part of the spring is connected to the pin at the top of the backrest bracket, and the other part of the spring is connected to the pin at the bottom of the support frame.
  • 2 to 4 springs can be provided according to actual needs.
  • the front part of the seat plate and the front part of the base plate are hinged by two connecting rods arranged in parallel on the left and right sides, and the rear part of the seat plate and the rear part of the base plate are hinged by the side plates on the left and right sides of the backrest bracket, and the two parts of the spring are respectively connected to the backrest bracket and the base plate; the connections between the seat plate, the base plate and the backrest bracket are all concentrated at the front and back parts of the base plate.
  • the connection structure is too concentrated, the vertical movement of the seat plate is large, so the volume of the base plate is larger and the overall thickness is heavier; moreover, the base plate, seat plate and enclosure of the chair chassis on the market are usually made of bent and welded metal parts.
  • the purpose of the present invention is to provide a chair and a plastic self-load-bearing chassis thereof, wherein the top seat and the base of the chassis are made of a plastic material that is lighter and easier to mold, and by reducing the swing amplitude of the top seat, the length of the chassis components in the vertical direction is reduced, thereby making the chassis thinner.
  • a plastic self-loading chassis including a base, a top seat and a tail seat, the base and the tail seat are hinged by a first hinge shaft, the top seat and the tail seat are hinged by a second hinge shaft, and the front part of the tail seat and the front part of the top seat are hinged by the second hinge shaft; it also includes a swinging member and a telescopic member, the bottom of the swinging member is hinged to the rear part of the base by a third hinge shaft, the top of the swinging member is hinged to the rear part of the top seat by a fourth hinge shaft, the fourth hinge shaft is connected to the base by a telescopic member, so that the telescopic member gives the swinging member a tendency to rotate downward, and the fourth hinge shaft is located on the rear side of the second hinge shaft; the base and the top seat are both made of plastic.
  • the tailstock includes two first connecting plates that are symmetrically arranged on the left and right, the rear parts of the two first connecting plates are fixedly connected by a second connecting plate, the two first connecting plates extend forward, the first hinge shaft respectively hinges the two first connecting plates to the base, the front parts of the two first connecting plates are hinged to the bottom of the top seat by a second hinge shaft, and the swinging member is located between the two first connecting plates.
  • the base is further provided with two positioning grooves extending forward and backward, the positioning grooves extending backward and penetrating the base, and the two first connecting plates of the tailstock are respectively inserted into the two positioning grooves and are hinged to the base through the first hinge shaft.
  • the telescopic member is a tension spring, and both ends of the tension spring are respectively connected to the fourth hinge shaft and the base.
  • it also includes a first mounting seat and a second mounting seat, both of which are provided with a spiral groove, the first mounting seat is sleeved on the fourth hinge shaft, the second mounting seat is hinged to the base, one end of the tension spring is wound in the groove of the first mounting seat, and the other end of the tension spring is wound in the groove of the second mounting seat.
  • the second mounting seat is hinged to the base via a fifth hinge shaft, and the fifth hinge shaft is located below the front portion of the tailstock.
  • two tension springs, two first mounting seats and two second mounting seats are each provided, and the two tension springs, two first mounting seats and two second mounting seats are all provided symmetrically with respect to each other.
  • the two second mounting seats are both fixed on the hinge seat, and the hinge seat is sleeved on the fifth hinge shaft.
  • a limiting groove is provided at the bottom of the articulated seat, and a first limiting portion is protruded from the base for preventing the articulated seat from lateral movement, and the first limiting portion is inserted into the limiting groove.
  • a chair comprises the above-mentioned plastic self-load-bearing chassis.
  • the beneficial effects of the technical solution of the present invention are as follows: after multiple transmissions between the tailstock and the top stock, the movement amplitude of the top stock is much smaller than that of the tailstock, and both the top stock and the tailstock are made of plastic, which, on the one hand, is convenient for molding and has a more beautiful shape, and on the other hand, can reduce the weight of the chassis and reduce the cost of the chassis.
  • FIG. 1 is a structural schematic diagram 1 of the plastic self-loading chassis of the present invention.
  • FIG. 2 is a second structural schematic diagram of the plastic self-loading chassis of the present invention.
  • FIG. 3 is a third structural diagram of the plastic self-loading chassis of the present invention.
  • FIG. 4 is a schematic diagram of the connection structure between the telescopic member and the hinge seat.
  • FIG. 5 is a schematic structural diagram of the hinged seat.
  • FIG. 6 is a schematic structural diagram of the base.
  • FIG. 7 is a schematic structural diagram of a swing member.
  • first and second are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as “first” or “second” may explicitly or implicitly include one or more of the features.
  • plural means two or more, unless otherwise clearly specified.
  • the terms “installed”, “connected”, “connected”, “fixed” and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components.
  • installed can be a fixed connection, a detachable connection, or an integral connection
  • it can be a mechanical connection or an electrical connection
  • it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components.
  • the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
  • a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them.
  • a first feature being “above”, “above” and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.
  • a first feature being “below”, “below” and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
  • the front, back, left, and right directions described in the following embodiments are consistent with those of the chair product, with one side of the chair backrest being the back and the side opposite to the chair backrest being the front, and the front and back being further divided into left and right.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • a plastic self-load-bearing chassis includes a base 1 for connecting chair legs, a top seat 3 for installing a chair seat, a tail seat 2 for installing a chair back, and a tension spring 65.
  • the base 1 and the tail seat 2 are hinged by a first hinge shaft 4, the top seat 3 and the tail seat 2 are hinged by a second hinge shaft 5, the front of the tail seat 2 and the front of the top seat 3 are hinged by the second hinge shaft 5, and the second hinge shaft 5 is located above the front side of the first hinge shaft 4;
  • the chassis also includes a swinging member 62 and a telescopic member, the bottom of the swinging member 62 is hinged to the rear of the base 1 by a third hinge shaft 61, the top of the swinging member 62 is hinged to the rear of the top seat 3 by a fourth hinge shaft 63, the fourth hinge shaft 63 is connected to the front of the base 1 by a telescopic member, thereby giving the swinging member 62 a tendency to rotate
  • the first hinge axis to the rear of the tailstock forms a first force arm
  • the first hinge axis to the second hinge axis forms a second force arm
  • the second hinge axis to the fourth hinge axis forms a third force arm
  • the fourth hinge axis as the fulcrum the fourth hinge axis to the third hinge axis forms a fourth force arm
  • the position of any articulated axis can be regarded as the fulcrum of the lever principle, gradually reducing the length of each force arm.
  • the swing distance of the tail seat gradually becomes shorter through multiple articulated axes connected in sequence, causing the movement of the top seat to become very slight, and thus the volume of the chassis can be smaller; and both the base and the top seat are made of plastic material, which, on the one hand, is convenient for molding, the shape is more beautiful, and the structure can be more complex; on the other hand, it can reduce the weight of the chassis and reduce the cost of the chassis.
  • the tailstock 2 includes two first connecting plates 22 that are symmetrically arranged on the left and right, the rear parts of the two first connecting plates 22 are fixedly connected by the second connecting plate 21, the two first connecting plates 22 extend forward, there are two first hinge shafts 4, the two first hinge shafts respectively hinge the two first connecting plates 22 with the base 1, the front parts of the two first connecting plates 22 are hinged to the bottom of the top seat 3 through the second hinge shaft 5, and the swinging member 62 is located between the two first connecting plates 22;
  • the base 1 has an installation cavity on the opening, and the left and right sides of the installation cavity are provided with positioning grooves 14 with the openings facing upward, the positioning grooves 14 extend backward and pass through the base 1, the two first connecting plates 22 of the tailstock 2 are respectively inserted into the two positioning grooves 14, and there are two first hinge shafts 4, the two first hinge shafts 4 corresponds to the two first connecting plates 22 one by one,
  • the two telescopic parts are symmetrically arranged.
  • the tops of the two telescopic parts are hinged to the swinging part 62, and the other parts of the two telescopic parts are fixed on the hinge seat 66 hinged to the base.
  • the movement of the telescopic parts is more flexible, and the two symmetrically arranged telescopic parts make the adjustment process of the chassis more stable and can withstand greater force, so that the chassis has a wider range of applications.
  • the telescopic member includes a tension spring 65, and the first mounting seat 64 and the second mounting seat 663 are respectively installed at both ends of the tension spring; the first mounting seat 64 and the second mounting seat 663 are both provided with a spiral groove, the first mounting seat 64 is hinged to the top seat 3 through the fourth hinge shaft 63, the hinge seat 66 is fixedly connected or integrally formed with the two second mounting seats 663, a part of the tension spring 65 is wound in the groove of the first mounting seat 64, and the other part of the tension spring 65 is wound in the groove of the second mounting seat 663; the second mounting seats are fixedly connected or integrally formed with the hinge seat, the second mounting seat 663 is hinged to the base 1 through the fifth hinge shaft 67, and the fifth hinge shaft 67 is located below the front part of the tailstock 2.
  • the telescopic member has higher stability, is convenient for the assembly of the chassis, and can adjust the tension of the tension spring, improve the applicability of the chassis, and provide users with a better use experience; and the fifth hinge shaft 67 can also limit the angle of the tailstock forward tilt, and can also prevent excessive adjustment.
  • two left-right symmetrical first limiting portions 17 are protruded in the mounting cavity of the base 1, and the first limiting portion 17 is located in front of the first connecting portion 12.
  • Two second limiting portions are protruded from the bottom of the articulated seat 66, and a limiting groove 665 with a downward opening is provided on the second limiting portion.
  • the two first limiting portions 17 are respectively inserted into the limiting grooves of the two second limiting portions, so that the articulated seat 66 can only move in the longitudinal direction, thereby preventing the articulated seat from moving laterally.
  • a chair using the chassis comprises the top seat, base seat and tail seat.

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Abstract

一种椅子及其塑胶自载重底盘，包括用于连接椅脚的底座（1）、用于安装椅座的顶座（3）、用于安装椅背的尾座（2）和拉簧（65），底座（1）和尾座（2）通过第一铰接轴（4）铰接，顶座（3）和尾座（2）通过第二铰接轴（5）铰接，尾座（2）通过第一铰接轴（4）与底座（1）铰接，尾座（2）的前部通过第二铰接轴（5）与顶座（3）的底部铰接，第二铰接轴（5）位于第一铰接轴（4）的前侧的上方；底盘还包括摆动件（62）和伸缩件，摆动件（62）的底部通过第三铰接轴（61）与底座（1）铰接，摆动件（62）的顶部、顶座（3）和伸缩件的一部分通过第四铰接轴（63）铰接，伸缩件的另一部分与底座（1）相连，第四铰接轴（63）位于第二铰接轴（5）的后侧；底座（1）和顶座（3）的材质为塑胶，能够降低椅子的重量，降低底盘的厚度。

Description

一种椅子及其塑胶自载重底盘 技术领域
本发明涉及家居领域，尤其涉及一种椅子及其塑胶自载重底盘。
 背景技术
椅子的底盘，也被称为托盘，是椅子上连接椅座、椅背和椅脚的一个重要部件。目前的转椅托盘普遍是由上托盘、下托梁、转轴及弹簧装置等零部件组成，上转盘与转椅座椅背面固定后，转椅可绕转轴作适当倾仰，并可主动恢复。
公开号为CN102846068的专利文献公开了一种转椅底盘，包括与气杆相连的底板，底板对整个底盘及椅座、靠背起到了支撑作用；在底板的左右两侧沿竖直方向各设有一支撑板，支撑板与底板固定相连，在两块支撑板上方沿水平方向设置有用以安装椅座的座板，底板的前后两侧分别设有向转椅前方倾斜的支撑架与靠背托架，支撑架、靠背托架的下部与两块支撑板铰接，座板的前后两侧分别与支撑架、靠背托架的顶部铰接，靠背托架通过连接钢板连接靠背，靠背托架连接有使其向转椅前方倾斜的弹性复位装置。具体地说，所述的支撑架呈口字形结构，包括上下平行设置的两根销轴，两根销轴通过左右平行设置的两个连杆固定相连；当然也可以设置一根连杆；靠背托架上同样设有上下平行设置的两根销轴，靠背托架的销轴穿插在靠背托架左右两侧的侧板上；支撑架、靠背托架下部的销轴与支撑板铰接，座板下部设有四只凸耳，座板借助凸耳与支撑架、靠背托架上部的销轴铰接。所述的弹性复位装置为弹簧，弹簧的一部与靠背托架上部的销轴相连，弹簧的另一部与支撑架下部的销轴相连。实际使用中，可根据实际需要设置2～4根弹簧。
现有技术中座板前部和底板的前部通过左右平行设置的两个连杆铰接，座板的后部和底板的后部通过靠背托架左右两侧的侧板铰接，弹簧的两部分别与靠背托架和底板相连；坐板、底板和靠背托架之间的连接全部集中在底板的前后两部，这样由于连接结构过于集中，致使坐板竖向移动的幅度较大，因此使底板的体积较大，整体更加厚重；而且，市场上椅子底盘的底板、坐板和围板通常有金属件弯折焊接制成，在将底盘组装在椅子上后需要在底盘外包覆壳体以增加椅子的观赏性，这样使椅子的底盘更加厚重。
 技术问题
为了解决现有技术中椅子的底盘整体较为厚重的问题，本发明的目的在于提供一种椅子及其塑胶自载重底盘，其中底盘的顶座和底座均采用质量更轻、成型更为容易的塑胶材质制成，而且通过缩减顶座摆动幅度的方式，减小底盘部件在竖直方向的长度，进而使底盘更薄。
 技术解决方案
为了实现上述的目的，本发明采用了以下的技术方案：一种塑胶自载重底盘，包括底座、顶座和尾座，底座和尾座通过第一铰接轴铰接，顶座和尾座通过第二铰接轴铰接，尾座的前部与顶座的前部通过第二铰接轴铰接；还包括摆动件和伸缩件，摆动件的底部通过第三铰接轴与底座的后部铰接，摆动件的顶部通过第四铰接轴与顶座的后部铰接，第四铰接轴通过伸缩件与底座相连，从而通过伸缩件赋予摆动件向下转动的趋势，第四铰接轴位于第二铰接轴的后侧；底座和顶座均为塑胶制成。
作为优选，尾座包括两个左右对称设置的第一连接板，两个第一连接板的后部通过第二连接板固定连接，两个第一连接板向前延伸，第一铰接轴分别将两个第一连接板与底座铰接，两个第一连接板的前部通过第二铰接轴与顶座的底部铰接，所述摆动件位于两个第一连接板之间。
作为优选，底座上还设有两个前后延伸的定位槽，定位槽向后延伸贯穿所述底座，尾座的两个第一连接板分别插入两个定位槽内并且通过第一铰接轴与底座铰接。
作为优选，伸缩件为拉簧，拉簧的两端分别与第四铰接轴和底座相连。
作为优选，还包括第一安装座和第二安装座，第一安装座和第二安装座上均设有螺旋状的凹槽，第一安装座套设在第四铰接轴上，第二安装座与底座铰接，拉簧的一端缠绕在第一安装座的凹槽内，拉簧的另一端缠绕在第二安装座的凹槽内。
作为优选，第二安装座通过第五铰接轴与底座铰接，第五铰接轴位于尾座前部的下方。
作为优选拉簧、第一安装座和第二安装座均设置有两个，两个拉簧、两个第一安装座和两个第二安装座均左右对称设置。
作为优选，两个第二安装座均固设在铰接座上，铰接座套设在第五铰接轴上。
作为优选，铰接座底部设有限位槽，底座上凸起有用于防止铰接座横向运动的第一限位部，第一限位部插入所述限位槽。
一种椅子，包括上述一种塑胶自载重底盘。
 有益效果
本发明的技术方案的有益效果为：尾座和顶座之间经过多次的传动，使得顶座的动作幅度远小于尾座的动作幅度，并且顶座和尾座均用塑胶制成，一方面方便成型，造型更加美观，另一方面，可以降低底盘的重量，降低底盘的成本。
 附图说明
图1为本发明中塑胶自载重底盘的结构示意图一。
图2为本发明中塑胶自载重底盘的结构示意图二。
图3为本发明中塑胶自载重底盘的结构示意图三。
图4为伸缩件与铰接座的连接结构示意图。
图5为铰接座的结构示意图。
图6为底座的结构示意图。
图7为摆动件的结构示意图。
附图标记：1、底座；11、挡板；12、第一连接部；14、定位槽；16、安装孔；17、第一限位部；18、通孔；2、尾座；21、第二连接板；22、第一连接板；23、第三连接板；3、顶座；31、遮挡部；4、第一铰接轴；5、第二铰接轴；61、第三铰接轴；62、摆动件；621、第二连接部；622、安装口；63、第四铰接轴；64、第一安装座；65、拉簧；66、铰接座；663、第二安装座；665、限位槽；67、第五铰接轴。
 本发明的最佳实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，除非另有说明，“多个”的含义是两个或两个以上，除非另有明确的限定。
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
以下实施例描述的前后左右方位与椅子产品的前后左右一致，以椅子靠背一侧为后，椅子靠背相对一侧为前，以该前后再分左右。
实施例1:
如图1-3所展示的一种塑胶自载重底盘，包括用于连接椅脚的底座1、用于安装椅座的顶座3、用于安装椅背的尾座2和拉簧65，底座1和尾座2通过第一铰接轴4铰接，顶座3和尾座2通过第二铰接轴5铰接，尾座2的前部与顶座3的前部通过第二铰接轴5铰接，第二铰接轴5位于第一铰接轴4的前侧的上方；所述底盘还包括摆动件62和伸缩件，摆动件62的底部通过第三铰接轴61与底座1的后部铰接，摆动件62的顶部通过第四铰接轴63与顶座3的后部铰接，第四铰接轴63通过伸缩件与底座1的前部相连，从而通过伸缩件赋予摆动件62向下转动的趋势，第四铰接轴63位于第二铰接轴5的后侧；底座1和顶座3均为塑胶制成。
如此设置，在上述结构中，以第一铰接轴为支点，第一铰接轴到尾座的后部形成第一处力臂，第一铰接轴到第二铰接轴形成第二处力臂；以第二铰接轴为支点，第二铰接轴到第四铰接轴形成第三处力臂；以第四铰接轴为支点，第四铰接轴到第三铰接轴形成第四处力臂；如此在底盘自适应调节的过程中，用户坐在椅子上，用户的背部靠在椅背上，椅背受力后驱动尾座2以第一铰接轴4为支点发生摆动；尾座2摆动时，尾座2的前部通过第二铰接轴5抬起顶座3，使顶座3前部围绕第一铰接轴4向后上方移动；顶座3移动时通过第四铰接轴63拉动摆动件62，使摆动件62围绕第三铰接轴61向后摆动，进而通过第四铰接轴63拉长伸缩件；当用户的背部前倾或用户起身时，伸缩件通过第四铰接轴63拉动顶座和摆动件62复位，顶座3通过第二铰接轴5驱动尾座2复位，尾座2复位时能够驱动椅背跟随用户的背部移动。
这样，在底盘自适应调节的过程中，任一铰接轴的位置均可被视为杠杆原理发生的支点，逐渐缩减各个力臂的长度，那么自适应调节的过程中尾座的摆动距离经过依次相连的多个铰接轴逐渐变短，致使顶座的移动变的很轻微，进而底盘的体积可以更小；并且底座和顶座均为塑胶材质制成，一方面方便成型，造型更加美观，结构也可以更加复杂，另一方面，可以降低底盘的重量，降低底盘的成本。
为了便于尾座2、顶座3和底座1的安装，本实施例中，如图2、图3、图6和图7，尾座2包括两个左右对称设置的第一连接板22，两个第一连接板22的后部通过第二连接板21固定连接，两个第一连接板22向前延伸，第一铰接轴4有两个，两个第一铰接轴分别将两个第一连接板22与底座1铰接，两个第一连接板22的前部通过第二铰接轴5与顶座3的底部铰接，所述摆动件62位于两个第一连接板22之间；底座1具有开口上的安装腔，安装腔的左右两侧均设有开口向上的定位槽14，定位槽14向后延伸并贯穿所述底座1，尾座2的两个第一连接板22分别插入两个定位槽14内，并且第一铰接轴4有两个，两个第一铰接轴4与两个第一连接板22一一对应，第一连接板22通过第一铰接轴4与底座1的中间位置铰接，两个第一连接板22的前部向上翘起并超过底座1，第二铰接轴5横向延伸将两个第一连接板22后与顶座3相连；安装腔内凸起有两个左右设置的第一连接部12，摆动件62底部凸起有两个左右设置的第二连接部621，两个第一连接部12位于两个第二连接部621之间，第三铰接轴61贯穿所述第一连接部12和第二连接部621，将底座1和摆动件62铰接；为了便于第三铰接轴61的安装，底座1的侧面上开设有与第三铰接轴61同轴的通孔18，如此第三铰接轴61可以通过通孔18插入安装腔内部将底座1和摆动件62铰接。为了增加底座的整体强度，本实施例中，在安装腔和固定槽14的内侧设置有纵横交错的加强筋。
为了进一步的提高底盘的适用群体，如图2-5所示，本实施例中，伸缩件有两个，并且两个伸缩件左右对称设置，两个伸缩件的顶部均与摆动件62铰接，两个伸缩件的另一部均固定在与底座铰接的铰接座66上。如此，伸缩件的活动更加灵活，对称设置的两个伸缩件使底盘的调节过程更加稳定，并且可以承受更大的力，使底盘的适用范围更广。进一步优选的，伸缩件包括拉簧65，拉簧两端分别安装有第一安装座64和第二安装座663；第一安装座64和第二安装座663上均设有螺旋状的凹槽，第一安装座64通过第四铰接轴63与顶座3铰接，铰接座66与两个第二安装座663固定连接或一体成型，拉簧65的一部缠绕在第一安装座64的凹槽内，拉簧65的另一部缠绕在第二安装座663的凹槽内；第二安装座均与铰接座固定连接或一体成型，第二安装座663通过第五铰接轴67与底座1铰接，第五铰接轴67位于尾座2前部的下方。这样，伸缩件的稳定性更高，便于底盘的组装，并且能够对拉簧的拉力进行调节，提高底盘的适用性，为用户提高更好的使用体验；并且第五铰接轴67还可以对尾座前倾的角度进行限位，还可以防止过渡调节。
为了防止铰接座横向窜动，本实施例中，如图2、图4和图5所示，底座1的安装腔内凸起有左右对称的两个第一限位部17，第一限位部17位于第一连接部12的前方，铰接座66底部凸起有两个第二限位部，第二限位部上设有开口向下的限位槽665，两个第一限位部17分别插入两个第二限位部的限位槽内，使铰接座66只能够在纵向上运动，避免铰接座横向移动。
一种应用上述底盘的椅子，包括上述顶座、底座和尾座。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管上面已经示出和描述了本发明的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本发明的限制，本领域的普通技术人员在不脱离本发明的原理和宗旨的情况下在本发明的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (10)

  1. 一种塑胶自载重底盘，包括底座(1)、顶座(3)和尾座(2)，底座(1)和尾座(2)通过第一铰接轴(4)铰接，顶座(3)和尾座(2)通过第二铰接轴(5)铰接，其特征在于：尾座(2)的前部与顶座(3)的前部通过第二铰接轴(5)铰接；还包括摆动件(62)和伸缩件，摆动件(62)的底部通过第三铰接轴(61)与底座(1)的后部铰接，摆动件(62)的顶部通过第四铰接轴(63)与顶座(3)的后部铰接，第四铰接轴(63)通过伸缩件与底座(1)相连，从而通过伸缩件赋予摆动件(62)向下转动的趋势，第四铰接轴(63)位于第二铰接轴(5)的后侧；底座(1)和顶座(3)均为塑胶制成。
  2. 根据权利要求1所述的一种塑胶自载重底盘，其特征在于：尾座(2)包括左右两个第一连接板(22)，两个第一连接板(22)的后部通过第二连接板(21)固定连接，两个第一连接板(22)向前延伸，第一铰接轴(4)分别将两个第一连接板(22)与底座(1)铰接，两个第一连接板(22)的前部通过第二铰接轴(5)与顶座(3)的底部铰接，所述摆动件(62)位于两个第一连接板(22)之间。
  3. 根据权利要求2所述的一种塑胶自载重底盘，其特征在于：底座(1)上还设有两个前后延伸的定位槽(14)，定位槽(14)向后延伸贯穿所述底座(1)，尾座(2)的两个第一连接板(22)分别插入两个定位槽(14)内并且通过第一铰接轴(4)与底座(1)铰接。
  4. 根据权利要求1所述的一种塑胶自载重底盘，其特征在于：伸缩件为拉簧(65)，拉簧(65)的两端分别与第四铰接轴(63)和底座(1)相连。
  5. 根据权利要求4所述的一种塑胶自载重底盘，其特征在于：还包括第一安装座(64)和第二安装座(663)，第一安装座(64)和第二安装座(663)上均设有螺旋状的凹槽，第一安装座(64)套设在第四铰接轴(63)上，第二安装座(663)与底座(1)铰接，拉簧(65)的一端缠绕在第一安装座(64)的凹槽内，拉簧(65)的另一端缠绕在第二安装座(663)的凹槽内。
  6. 根据权利要求5所述的一种塑胶自载重底盘，其特征在于：第二安装座(663)通过第五铰接轴(67)与底座(1)铰接，第五铰接轴(67)位于尾座(2)前部的下方。
  7. 根据权利要求6所述的一种塑胶自载重底盘，其特征在于：拉簧(65)、第一安装座(64)和第二安装座(663)均设置有两个，两个拉簧(65)、两个第一安装座(64)和两个第二安装座(663)均左右对称设置。
  8. 根据权利要求7所述的一种塑胶自载重底盘，其特征在于：两个第二安装座(663)均固设在铰接座(66)上，铰接座(66)套设在第五铰接轴(67)上。
  9. 根据权利要求8所述的一种塑胶自载重底盘，其特征在于：铰接座(66)底部设有限位槽(665)，底座(1)上凸起有用于防止铰接座(66)横向运动的第一限位部(17)，第一限位部(17)插入所述限位槽(665)。
  10. 一种椅子，其特征在于：包括上述权利要求1-9中任一项所述的一种塑胶自载重底盘。
PCT/CN2023/123224 2022-09-29 2023-10-07 一种椅子及其塑胶自载重底盘 WO2024067879A1 (zh)

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