WO2020233417A1 - 座椅装置及其星形底座 - Google Patents

座椅装置及其星形底座 Download PDF

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Publication number
WO2020233417A1
WO2020233417A1 PCT/CN2020/089197 CN2020089197W WO2020233417A1 WO 2020233417 A1 WO2020233417 A1 WO 2020233417A1 CN 2020089197 W CN2020089197 W CN 2020089197W WO 2020233417 A1 WO2020233417 A1 WO 2020233417A1
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WO
WIPO (PCT)
Prior art keywords
center seat
seat
star
extension arm
base
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PCT/CN2020/089197
Other languages
English (en)
French (fr)
Inventor
王江林
王郑兴
波克赫尔曼
Original Assignee
恒林家居股份有限公司
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 恒林家居股份有限公司 filed Critical 恒林家居股份有限公司
Priority to US17/612,576 priority Critical patent/US11744371B2/en
Priority to JP2021569351A priority patent/JP2022535709A/ja
Priority to EP20809209.8A priority patent/EP3973821A4/en
Priority to KR1020217037939A priority patent/KR20220002411A/ko
Publication of WO2020233417A1 publication Critical patent/WO2020233417A1/zh

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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/002Chair or stool bases
    • A47C7/004Chair or stool bases for chairs or stools with central column, e.g. office chairs
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C3/00Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02Rocking chairs
    • A47C3/025Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/002Chair or stool bases
    • A47C7/006Chair or stool bases with castors
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C9/00Stools for specified purposes
    • A47C9/002Stools for specified purposes with exercising means or having special therapeutic or ergonomic effects

Definitions

  • the invention relates to a seat device and a star-shaped base thereof, in particular to a base used for office chairs, work chairs, seat stools or standing auxiliary equipment.
  • star bases are the standard solution for the base.
  • a chair post that can be adjusted in height.
  • the supporting structure includes, for example, basic support, seat support, and, if necessary, seat back support.
  • the star base is usually used on a rotating chair or stool, or seat. The chair surface of these devices can rotate around the longitudinal axis of the chair post.
  • the object of the present invention is to provide a seat device that allows the seat device to rotate or swing without changing the existing components at the top of the chair post of the seat device, especially the support structure of the seat or seat surface.
  • a core idea of the present invention is to realize the rotation and swing of the seat or the seat surface by modifying the parts at the lower end of the seat post of the seat device. For this reason, a movable star base is proposed.
  • the star-shaped base of the present invention is characterized in that among the extending arms installed on the center seat of the star-shaped base, at least one of the extending arms is hinged with the center seat and can rotate relative to the center seat.
  • the seat of the present invention is characterized in that it is equipped with such a star base.
  • a star-shaped base with an extension arm rotatable relative to the center seat can change the position of the center seat, including the vertical drop of the center seat and the center seat relative to the horizontal plane. Tilt, that is, the tilt relative to the ground. Therefore, in the seat device, all the components arranged above the center seat and supported by the center seat and the chair column fixed on the center seat, including the support structure and the seat, can be rotated or swung in addition to the lowering movement. , Without special design of the supporting structure.
  • the extension arm mounted on the center seat of the star base is usually fixed with the roller. With rollers, the seat device can be moved on the ground. Although on the ground with the help of a star base, the seat device can achieve a very safe and stable standing, the star base with rollers still has such a situation: the seat device will accidentally move or roll on the ground, Even when the user is sitting on the seat device. Even if the rolling of the seat device is usually small, the accidental movement of it can still cause danger. That is, the user may fall or be injured due to such accidental rolling of the seat device, or the user may be disturbed due to such movement of the seat device while sitting. When the user of the seat device is an elderly person, these risks are more prominent.
  • the solution of the present invention can avoid accidental rolling or accidental movement of the seat device.
  • the seat device here refers to the type in which the extension arm of the star base is equipped with rollers.
  • the solution is that when the seat surface of the seat device is loaded by the user, the center seat of the star base can be lowered to the ground due to the rotatability of the extension arm. Since the user will apply gravity on the seat, the static friction generated by the gravity on the center seat can avoid accidental rolling or accidental movement of the seat.
  • the static friction is greater than the rolling friction required for rolling.
  • the present invention makes it possible to realize a new type of vertical auxiliary device.
  • this auxiliary device when the seat surface is fully loaded, the center seat of the star-shaped base will drop to the ground to form the support point and rotation point of the vertical auxiliary device. This state in which the extension arm is firmly supported on the ground ensures that the vertical auxiliary device is in a very safe state.
  • the extended arm with limited deflection will also limit the rotation of the vertical auxiliary device, thereby avoiding an undesirable extreme state of the vertical auxiliary device, which may cause falls and injuries.
  • the present invention can be well used not only on office chairs, work chairs and stools, but also on vertical auxiliary devices.
  • each solution can contribute to the solution of the present invention individually or in combination with each other.
  • each extension arm rotatable relative to the center seat
  • Both can be turned to the maximum extent from the unrotated starting position, and can also be reset.
  • the number of protruding arms hinged to the center seat and rotating relative to the center seat is at least such that when the protruding arms rotate at the same time, the center seat can be lowered to the extent of contacting the ground. Therefore, if it can be ensured that the gravity load on the seat device is large enough, the center seat can fall to the ground, and the seat device can be used as a standing assist device.
  • the bottom surface of the center seat that is, the side of the center seat facing the ground, is made convex.
  • the convex supporting surface is preferably a spherical surface. This spherical surface supports the center seat on the ground to easily realize the required rotation and swing.
  • all the extending arms are hinged with the center seat and can rotate relative to the center seat.
  • the number of extending arms may be 4 or 6, but 5 is preferred.
  • each extension arm that rotates relative to the center seat resists the elastic force of the elastic element when it rotates.
  • each extension arm rotating relative to the center seat is equipped with an elastic element.
  • This elastic element acts between the extension arm and the center seat, that is, one end of the elastic element acts on the extension arm and the other end acts on the center seat.
  • the elastic element can be a compression spring, or an elastic block designed according to geometric conditions and made of elastic materials.
  • a separate elastic element such as a circular elastic block, can also be configured.
  • Such elastic elements can be easily installed around the center seat.
  • the seat device When the elastic element is used, due to its elastic effect, the seat device will produce useful rotation and swing, and erect or reset behavior. If there is a load on the seat device, such as a user sitting on the seat device, the elastic action will provide a limited resistance. The user of the seat device must resist this elastic force under the load to move the seat device. Once the load on the seat device changes, for example, due to the user's movement on the seat surface, or the user changes the position of the center of gravity, the elastic action will provide a limited rotational resistance. The user of the seat device must resist this elastic force when rotating or swinging in order to move the seat device. At the same time, according to the increase or decrease of the applied force, a corresponding elastic effect will be produced.
  • This supporting elastic force can restore the movement of the center seat to the initial position. If the load on the seat device disappears completely, that is, the seat device is unloaded, for example, because the user stands up, the center seat and the seat surface of the star base will automatically return to an upright position.
  • the roller is preferably installed at the free end of the extension arm. With the help of these rollers, the star base can be moved.
  • the substitute of the roller can be sliding parts or other similar parts.
  • the star base assembled according to the present invention can be used as a conventional non-movable base according to requirements.
  • the locking occurs mechanically.
  • the preferred way is to at least partially fill the rotation space necessary for the rotation of the extension arm through the movement of a suitable locking element, and then perform mechanical locking, or, by other means, lock the direction of the extension arm in the rotation space. Internal rotation.
  • FIG. 1 Seating device with star base.
  • Figure 2 is a perspective view of a star base.
  • FIG. 1 Side view of the unloaded star base.
  • Figure 4 A side view of a uniformly loaded star base.
  • Figure 5 Side view of a star-shaped base under non-uniform loading.
  • Figure 6 is a detailed cross-sectional view of side view 5.
  • the seat device of the present invention can be any one of an office chair, a work seat, a seat stool or standing auxiliary equipment.
  • a seat stool is used as an example for description.
  • the seat stool 1 stands on the ground 2 through its base.
  • the base is designed as a star base 3.
  • the star base 3 includes a center seat 4 (also called a "hub") and five extending arms 5 mounted on the center seat.
  • the extension arms are evenly distributed along the center seat.
  • a roller 6 is fixed to the free end of the extension arm 5.
  • In the middle of the center seat 4 is a receiving sleeve 7 for the chair post 8, and the height of the chair post 8 can be adjusted by means of a gas spring (not shown in the figure).
  • the upper surface of the chair post 8 is a supporting structure for placing the chair surface 9.
  • the support structure includes a base support 10 and a seat support 12.
  • the base support 10 and a conical receiving part 11 are placed on the chair post 8, and the seat support 12 is connected with the base support 10.
  • Above the seat support 12 is the final seat surface 9 with a cushion.
  • the seat support 12 and the seat surface 9 are rotatable around the rotation axis of the longitudinal axis 13 of the chair post.
  • All of the five extension arms 5 installed on the center seat have rotary joints respectively, are hinged with the center seat 4 and rotate relative to the center seat 4.
  • the rotating shaft 14 shown in FIG. 2 is illustrative of the direction, and is parallel to the supporting surface 15 of the roller 6.
  • Each extension arm 5 is individually connected to the center seat 4 and rotates without being affected by other extension arms 5.
  • the extension arm 5 can be rotated from the non-rotation starting position shown in Figs. 3 and 4 to the maximum deflection position shown in Fig. 5, and can be rotated again. As shown in FIG. 6, the maximum rotation position and deflection degree of the extension arm 5 are determined by the stop 16 on the center seat 4.
  • the extension arm 5 is stably placed on the supporting surface 15, that is, supported on the ground 2. This does not depend on whether the seat surface 9 is loaded, nor does it depend on whether the center seat 4 is lowered and/or tilted. In other words, the extension arm 5 rotates relative to the center seat 4 in this way: during the entire rotation, the free ends of the extension arm 5 will maintain their ground clearance. The free end is kept in contact with the ground through the roller 6 or similar components.
  • This structure is designed so that when the center seat 4 is lowered, the extension arm 5 can also keep the extension arm 5 in contact with the ground while rotating relative to the center seat 4. Depending on the degree of deflection of each extension arm 5, the center seat 4 can be lowered, even reaching the level of contact with the ground 2.
  • the bottom surface of the center seat facing the ground 2 is made convex, forming an arch-shaped rollable supporting surface 17.
  • the center seat 4 touches the ground it can roll along this supporting surface. In this way, in the fully lowered state, the seat device can be rotated or swung.
  • each extension arm 5 is equipped with an elastic element.
  • the elastic element of the extension arm 5 is only symbolically represented as a compression spring 18. The placement of the elastic element can make it work between one end of the extension arm 5 and the other end of the center seat 4. Once the load on the extension arm 5 disappears or decreases, the elastic element 18 can pull the extension arm 5 from the rotating position back to the starting position.
  • the locking element can rotate around the axis of rotation in the direction of the longitudinal axis 13 of the chair column relative to the central base body, and rotate from an intermediate position (see FIG. 6) to the locking position.
  • the braking element (not shown in the figure) installed on the locking element 21 will be guided to the back 22 of the extension arm 5, the back facing the center seat 4.
  • the main thing is that the rotating space 19 will be filled at the same time, at least in the immediate area between the back 22 and the stop 16, a mechanical connection for transmitting force will be formed. As a result, the movement of the extension arm 5 toward the rotation space 19 and the rotation of the extension arm 5 are blocked.
  • the locking element 21 close to the center seat 4 is provided with an arc-shaped guide groove 25 in which a guide pin 26 installed on the base of the center seat is embedded.
  • the extension arm 5 can rotate relative to the center seat 4.
  • the rotating space 19 provides a free distance 20, one side of which is the back 22 of the extension arm 5, and the other side is the stopper 16 installed inside the center seat. This distance determines the maximum degree of deflection.
  • Figure 3 shows the star base 3 of the chair stool 1 when the chair surface 9 is not loaded. All the rollers 6 are on the ground.
  • the rollable supporting surface 17 on the bottom surface of the center seat is spaced from the ground 2. The distance between the lowest point of the bottom surface of the center seat and the ground 2 is preferably only a few centimeters.
  • the center seat 4 moves in the vertical direction without tilting to the horizontal direction.
  • the center seat 4 will fall vertically along the descending direction 23 onto the ground 2, as shown in FIG. 4.
  • all the extended arms 5 will be deflected upward along the deflection direction 28 in the same way, especially the same route.
  • the roller 6 will always be supported on the ground 2.
  • the extension arm 5 functions as a further support to ensure that the chair and stool 1 stand safely.
  • the chair surface 9 When the user's center of gravity position changes, the chair surface 9 will bear uneven load, and may rotate or swing (as shown by arrow 24 in FIG. 1).
  • the center seat 4, which is still on the ground 2, will be inclined relative to the vertical direction (as shown in Figs. 5 and 6). Depending on the tilt direction, some extension arms 5 will rotate more, and some extension arms 5 will rotate less.
  • the center seat 4 When the center seat 4 is not in contact with the ground, such a tilt of the center seat 4 will also occur.
  • the extension arm 5 can be further deflected upward.
  • the lowering and tilting of the center seat 4 can be performed simultaneously. If the lowering degree of the center seat 4 reaches the ground, the center seat 4 can still be tilted further.
  • the lowering and tilting movements of the center seat 4, as well as the rotation and swing of the seat surface 9, are restricted by the elastic force of the elastic element 18 mounted on the extension arm 5.
  • the descent path of the center seat 4, or the rotation path of the extension arm 5, and the return power of each elastic element 18 that participate in the movement of the center seat 4, present a linear relationship.
  • the tilting movement of the center seat 4 and the rotation and swing of the seat surface 9 can be limited. This is achieved by setting the maximum deflection of the extension arm 5. When the extension arm 5 reaches the maximum deflection, it will resist the stop 16 provided on the center seat 4. The stopping of the descending movement is not achieved by the extension arm 5 touching the center seat 4, but by the center seat 4 being lowered to the ground 2.
  • the invention relates to a star-shaped base on a seat device, which can be used especially for office chairs, work seats, seat stools or standing auxiliary devices.
  • a seat device 1 the seat surface 9 can be rotated or swung, and there is no need to change the parts installed at the upper end of the seat post 8, especially the support structure 10, the seat support 12 and the seat surface on which the seat surface 9 is placed 9 itself, the rotation or swing of the seat surface 9 can be realized by modifying the parts of the seat device 1 installed at the lower end of the chair post 8, that is, installing a movable star base 3.
  • the star base 3 is characterized in that at least one of the extension arms 5 installed on the center base 4 is hinged with the center base 4 and can rotate relative to the center base 4.
  • the above-mentioned center seat has a plurality of extensions respectively extending around, and the extensions are arranged in one-to-one correspondence with the extension arms, and at least one or all the extension arms are respectively corresponding to the extensions on the center seat.
  • an elastic element is provided between the extension arm and its corresponding extension portion, and the elastic element provides an elastic force against the rotation of the extension arm relative to the center seat.
  • At least one or all of the above-mentioned extension arms are also connected to the center seat by a connecting rod, so that a crank slider is formed between the extension arm, the connecting rod and the center seat.
  • an elastic element preferably a compression spring or a tension spring
  • the elastic element provides an elastic force against the rotation of the extension arm relative to the center seat.
  • At least one or all of the above-mentioned extending arms are also connected to the center seat by two connecting rods, so that a plane is formed between the extending arms, the two connecting rods and the center seat.
  • a four-bar mechanism, an elastic element preferably a compression spring or a tension spring is arranged between any two of the extension arm, the two connecting rods and the center seat, and the elastic element provides resistance to the extension arm from rotating relative to the center seat
  • the number of extending arms of the star base can be 3, 4, 5, 6, or more than 6, but preferably 5.

Abstract

一种座椅装置及其星形底座(3),尤其可用于办公座椅、工作座椅、座凳或站立辅助装置,包括中心座(4)和安装在中心座(4)上的多根伸出臂(5),伸出臂(5)用于将星形底座(3)放置在地面上,伸出臂(5)中的至少一根与中心座(4)铰接,并可相对于中心座(4)转动。所述座椅装置的椅面可转动或摆动,同时无需更改椅柱上端安装的零部件,特别是无需更改支撑结构、安放椅面的座椅支撑和椅面本身。

Description

座椅装置及其星形底座 技术领域
本发明涉及一种座椅装置及其星形底座,尤其是用于办公座椅、工作座椅、座凳或站立辅助设备的底座。
背景技术
如今,对于座椅装置,特别是办公座椅、工作座椅和座凳,星形底座是基座的标准方案。通常,它带有一根椅柱,可以调整高度。在椅柱上有支撑结构,用来安放椅面。支撑结构包括,例如:基础支撑、座椅支撑,如有需要的话,也包括椅背支撑。星形底座通常被应用在旋转椅或旋转凳上,或座椅上。这些装置的椅面可绕着椅柱的纵轴旋转。
无论已有的可移动和可调整座椅如何,如今,这种所谓的“可移动座椅”,都会从人体工程学的角度被大力宣传。这种座椅装置的姿态,例如它的倾斜,可以随着座椅装置上的负载和/或负载的改变而变化,尤其是,当座椅装置的使用者坐在座椅装置的不同位置时,或者,由于移动使用者的重心发生改变时。从这个方面来说,座椅装置的各个方向都被设计成可转动或摆动才好。为此,常常在已有的性能良好的座椅装置或支撑结构上进行结构改造。但这样产生的机械方案,不仅比较复杂,而且需要高昂的费用来制造。一般来说,由于需要附加必要的部件和提供必需的空间,座椅装置或支撑结构设计改变会变差。
发明概述
技术问题
本发明的目的是提供一种座椅装置,它允许座椅装置转动或摆动,又不必需改变座椅装置椅柱顶端的已有零部件,特别是椅座或椅面的支撑结构。
问题的解决方案
技术解决方案
这个目的可通过本发明独立权利要求所述的星形底座和座椅装置来实现。优选的实施方式在从属权利要求中被给出。
本发明的一个核心思想是,通过修改座椅装置椅柱下端的零部件,来实现椅座或椅面的转动和摆动。为此,提出了一种可活动的星形底座。
本发明中星形底座的特征在于,被安装在星形底座的中心座上的伸出臂中,至少有一根伸出臂与中心座铰接,并相对于中心座可以转动。本发明中座椅的特征在于,它配有这种星形底座。
根据本发明的第一个方面,带有可相对于中心座转动的伸出臂的星形底座,可以实现中心座的位置改变,包括中心座在竖直方向的下降和中心座相对于水平面的倾斜,也就是相对于地面的倾斜。因此,在座椅装置中,所有布置在中心座的上方、由中心座和固定在中心座上的椅柱支撑零部件,包括支撑结构和座椅,除了下降移动外,也可实现转动或摆动,而无需对支撑结构进行专门设计。
安装在星形底座的中心座上的伸出臂,通常与滚轮固定在一起。通过滚轮,座椅装置可以在地面上移动。虽然在地面上借助于星形底座,座椅装置可以实现非常安全和稳定的站立,装有滚轮的星形底座还是会出现这样的情况:座椅装置会意外地移动,或在地面上滚动,甚至使用者在座椅装置上坐着的时候。即使通常座椅装置的这种滚动很小,它的这种意外移动还是会造成危险。也就是说,使用者会由于座椅装置的这种意外滚动而摔倒或受伤,或者使用者在坐着的时候,由于座椅装置的这种移动,而被打扰。当座椅装置的使用者是老人时,这些危险会更突出。
根据本发明的第二个方面,本发明的方案可以避免座椅装置的意外滚动或意外移动。这里的座椅装置就是指星形底座的伸出臂装有滚轮的这种。方案是,当座椅装置的椅面因使用者产生负载时,由于伸出臂的可转动性,星形底座的中心座可下降到地面。由于使用者会在座椅上施加重力,由此重力而在中心座上产生的静摩擦力可以避免座椅的意外滚动或意外移动。这里的静摩擦力大于滚动所需的滚动摩擦力。用这种简单的方法就可以提供安全的座椅或座凳。这对老年人会有吸引力。同时,这种座椅也可以在工作场合得到很好的应用。因为在工作场合,座椅的意外移动会干扰工作,但由于需要移动,又不能放弃使用它。
此外,从技术上看,以立式辅助装置形式出现的座椅也比较普遍。这些立式辅助装置很少配有星形底座。滚轮被安装到立式辅助装置的基座上的情况更少。在立式辅助装置上,这种“可动座椅”通常是这样实现的:安装一个贴近地面的接头,使支撑椅面的基座可以转动。
根据本发明的第三个方面,本发明使一种新型立式辅助装置的实现成为可能。在这种辅助装置中,当椅面被充分加载时,星形底座的中心座会下降到地面形成立式辅助装置的支撑点和旋转点。这种伸出臂被牢靠地支撑在地面上的状态,确保了立式辅助装置处于非常安全的状态。同时,受限偏转的伸出臂也会限制到立式辅助装置的转动,由此,可以避免立式辅助装置出现不该有的极端状态,该极端状态可能会导致摔倒和受伤。
因此,本发明不仅可以很好地被用到办公室座椅、工作座椅和座凳上,也可以用在立式辅助装置上。
本发明的优选实施例中,每个方案可以单独或者彼此组合对本发明的解决方案作出贡献。根据本发明的优选实施例,每一根相对中心座可转动的伸出臂
a)都与中心座连接。这些伸出臂可单独的,彼此不受影响的转动。
b)都可以由未转动的起始位置,转到最大程度,也可复位。
c)是以这样的方式相对中心座转动的:在整个转动过程中,伸出臂的自由端保持其离地间隙。
和/或者
d)是以这样的方式相对中心座转动的:在中心座下降时,伸出臂保持与地面的接触。
此外,根据本发明的另一个优选实施例,与中心座铰接并且相对中心座转动的伸出臂的数量至少可以使:当伸出臂同时转动时,中心座可下降到接触地面的程度。由此,如果可以保证座椅装置上的重力负载足够大,中心座就可以下落到地面,座椅装置就可以被用作站立辅助装置。
根据本发明的一个优选实施例,中心座底面,也就是中心座朝向地面的一面,被制作成凸面。凸形支承面优选是球形面,这种球形面支承,使得落地的中心座可以很简单地实现所需的转动和摆动。
根据本发明的特别优选实施例,所有伸出臂都与中心座铰接,并可相对于中心座转动。根据本发明的优选实施例,伸出臂的数量可以是4个或6个,但优选5个。
根据本发明的优选实施例,每条相对中心座转动的伸出臂在转动时都会抵抗弹性元件的弹性力。
根据本发明的优选实施例,每条相对中心座转动的伸出臂都配置一个弹性元件。这个弹性元件作用在伸出臂和中心座之间,也就是说,弹性元件的一端作用在伸出臂上,另一端作用在中心座上。在简单情况下,弹性元件可以是一个压缩弹簧,或者,是一个根据几何条件设计且是弹性材料制作而成的弹性块。
为此,也可以配置单独的弹性元件,比如,圆环形的弹性块。这样的弹性元件可以很方便地围绕中心座安装。
使用弹性元件时,由于其弹性作用,座椅装置会产生有用的转动和摆动及直立或复位的行为。如果座椅装置上有负载,比如使用者坐在座椅装置上,弹性作用就会提供一个限定阻力。座椅装置的使用者,必须在负载的作用下抵抗这个弹性力,才能移动座椅装置。一旦座椅装置上负载发生改变,比如,由于使用者在椅面上的移动,或使用者改变了重心的位置,弹性作用就会提供一个限定的转动阻力。座椅装置的使用者,必需在进行转动或摆动时,抵抗这个弹性力,才能移动座椅装置。同时,根据施加力的增加或减少,会产生相应的弹性作用。这种起支撑作用的弹性力,可以使中心座的移动恢复到起始位置。如果座椅装置上的负载完全消失,也就是座椅装置被卸载,比如因为使用者站起来,星形底座的中心座以及椅面会自动地按竖直方向恢复直立。
根据本发明的优选实施例,滚轮优选被安装在伸出臂的自由端。借助于这些滚轮,星形底座可以移动。滚轮的替代物可以是滑动零部件或其他类似的零部件。
根据本发明的优选实施例,无论是单个或所有伸出臂的转动,还是中心座的下降和倾斜功能,均可借助锁紧装置进行锁紧。该锁紧装置优选被设计成这样:用一个锁紧动作,从伸出臂的起始位置,同时锁紧所有伸出臂的转动。因此,根据本发明装配的星形底座,可根据需求,被用作常规的非移动式的底座。
根据本发明的优选实施例,锁紧是通过机械方式发生的。优选方式是,通过合适的锁紧元件的运动,至少部分地填满伸出臂转动必需的转动空间,然后进行机械锁紧,或者,通过其他方式,锁紧伸出臂在转动空间内的向内转动。
发明的有益效果
对附图的简要说明
附图说明
本发明的实施例,借助下面的附图,可以更好地被阐明。
图1配有星形底座的座椅装置。
图2星形底座的立体图。
图3无负载星形底座的侧视图。
图4受载均匀的星形底座的侧视图。
图5非均匀受载的星形底座的侧视图。
图6侧视图5的详细截面图。
所有的附图都不是按比例对本发明进行展示的,而是示意图,并且仅含有基本组成部分。相同的标号代表了相同的元件,或功能类似的元件。
附图标记:
1.座椅装置、座凳
2.地面
3.星形底座
4.中心座
5.伸出臂
6.滚轮
7.容纳套筒
8.椅柱
9.椅面
10.基础支撑
11.锥形容纳件
12.座椅支撑
13.椅柱纵轴
14.转轴
15.支承面
16.挡块
17.可碾转支承面、中心座底面
18.弹性元件、压缩弹簧
19.转动空间
20.自由间距
21.锁紧元件
22.伸出臂背面
23.下降方向
24.转动和摆动方向
25.导槽
26.导向销
27.垂直方向
28.偏转方向
本发明的具体实施方式
本发明所述的座椅装置可以是办公座椅、工作座椅、座凳或站立辅助设备中的任意一种。本实施例以座凳为例进行描述。座凳1通过它的基座站立在地面2上。基座被设计成星形底座3。星形底座3包括中心座4(也称为“毂”)和五根安装在中心座上的伸出臂5。伸出臂是被均匀地沿着中心座分配的。在伸出臂5的自由端固定有滚轮6。中心座4的中间是用于椅柱8的容纳套筒7,借助于气弹簧(图中未画出)可以对椅柱8的高度进行调节。
椅柱8的上面是用来安置椅面9的支撑结构。这里展示的这个简单的例子中,支撑结构包括基础支撑10和座椅支撑12。基础支撑10与一个锥形容纳件11一起安放在椅柱8上,座椅支撑12则与基础支撑10连接一起。座椅支撑12的上面是带有坐垫的最终椅面9。座椅支撑12和椅面9是可以围绕着椅柱纵轴13的旋转轴进行旋转的。
所有的安装在中心座上的五根伸出臂5,分别具有旋转关节,与中心座4铰接并相对中心座4转动。图2所示的转轴14是说明方向的,它与滚轮6的支承面15平行。
每根伸出臂5都单独与中心座4连接并转动,不受其他伸出臂5的影响。伸出臂5可以从图3和图4所示的未转动起始位置,转到图5所示的最大偏转位置,并可进行恢复转动。如图6所示,伸出臂5的最大转动位置和偏转程度,是由中心座4上的挡块16确定的。
该结构的特征在于,伸出臂5稳定地放置在支承面15上,也就是说,支撑在地面2上。这不取决于椅面9是否受载,也不取决于中心座4是否有下降和/或倾斜。换句话说,伸出臂5是这样相对于中心座4转动的:在整个转动过程中,伸出臂5的自由端都会保持它们的离地间隙。自由端是通过滚轮6或类似部件来保持与地面接触的。该结构被设计成,中心座4下降时,伸出臂5在相对于中心座4转动的同时,也可以保持伸出臂5与地面的接触。取决于每一根伸出臂5的偏转程度,中心座4可以下降,甚至到达与地面2接触的程度。
朝向地面2的中心座底面被制成凸面,形成一个拱形的可碾转支承面17。中心座4在接触地面时,可沿这个支承面碾转。这样,在完全下降的状态下,座椅装置就可以转动或摆动了。
伸出臂5在相对中心座4转动时,需对抗弹性元件的弹性力。每一根伸出臂5都配备一个弹性元件。图6中,伸出臂5的弹性元件仅仅是象征性地表示成压缩弹簧18。弹性元件的放置,可以使它在伸出臂5的一端和中心座4的另一端之间起作用。一旦伸出臂5上的加载消失或减少,弹性元件18就可将伸出臂5,从转动位置拉回到起始位置。
借助于安装在中心座4上面的环形锁紧元件21,所有的伸出臂5的转动可以同时被锁住。锁紧元件可以围绕椅柱纵轴13方向的旋转轴,相对于中心座基体旋转,从一个中间位置(见图6)旋转到锁紧位置。安装在锁紧元件21上的制动元件(图中未画)会被导向至伸出臂5的背面22,该背面面向中心座4。主要的是,转动空间19会同时被嵌满,至少在背面22和挡块16之间的紧邻区域,会形成一个传递力的机械连接。由此,阻挡了伸出臂5转向转动空间19的运动和伸出臂5 的转动。紧贴中心座4的锁紧元件21上有弧形的导槽25,里面嵌有安装在中心座基体上的导向销26。在转动空间19中,伸出臂5可相对于中心座4转动。转动空间19提供了一个自由间距20,此间距的一边为伸出臂5的背面22,另一边为安装在中心座内部的挡块16。这个间距确定了可以偏转的最大程度。
图3给出的是,椅面9没有负载时椅凳1的星形底座3。所有的滚轮6均在地面上。中心座底面的可碾转支承面17与地面2有间隔。中心座底面的最低点到地面2的间距,优选值仅为几厘米。
椅面9上的负载均匀时,中心座4沿垂直方向运动,不会向水平方向倾斜。椅面上的重力负荷足够大时,中心座4会沿着下降方向23垂直向下降落到地面2上,如图4所示。同时,所有的伸出臂5会以相同的方式,特别是相同的路线,沿着偏转方向28向上偏转。滚轮6则会一直支承在地面2上。
当使用者不仅使椅面9产生下降运动,还产生转动或摆动时,由于球形中心座底面在碾压时的摩擦效应,椅凳1的滚动就会被阻止。伸出臂5起到进一步支撑的作用,保证椅凳1安全的站立。
使用者的重心位置发生改变时,椅面9会承受不均匀的负载,可能出现转动或摆动(如图1中箭头24所示)。依然位于地面2上的中心座4,会相对于竖直方向发生倾斜(如图5和图6)。根据倾斜方向,一些伸出臂5转动的程度会多一些,另一些伸出臂5则会转动的少一些。中心座4还未与地面接触时,中心座4这样的倾斜也会发生。在椅面9负载不均匀,或者,相对于竖直方向的偏转转动或摆动非常强烈时,伸出臂5可进一步向上偏转。尽管如此,滚轮6依然保持与地面接触,也就是说,滚轮6会一直在地面上,成为附加的支承面。根据使用者在椅凳1上施加的负载力的作用方向,并考虑到弹性元件18提供的恢复力,中心座4在不同空间方向上会出现不同程度的倾斜。这意味着,安装在中心座4上的伸出臂5会出现不同强度的偏转。图5是中心座处于下降和倾斜的情况。图6是在该情况时,伸出臂处于相对转动较少的中间位置时的截面图。
中心座4的下降和倾斜可以同时进行。如果中心座4的下降程度到达了地面,中心座4仍可进一步倾斜。
中心座4的下降运动和倾斜运动,以及椅面9的转动和摆动,会通过安装在伸出 臂5上的弹性元件18的弹性力被限制。中心座4的下降路径,或者说伸出臂5的转动路径,和因中心座4的运动而参与的每个弹性元件18的回复制动力,呈现线性关系。同时,中心座4的倾斜运动及椅面9的转动和摆动可以被限定。这是通过伸出臂5的最大偏转被设定实现的。伸出臂5在到达最大偏转时,会抵住配备在中心座4上的挡块16。下降运动的制止,则不是通过伸出臂5触碰中心座4实现的,而是通过中心座4降落到地面2实现的。
本发明涉及到一种座椅装置上的星形底座,尤其可用于办公座椅、工作座椅、座凳或站立辅助装置。为了提供这样一种座椅装置1:椅面9可转动或摆动,同时无需更改椅柱8上端安装的零部件,特别是无需更改支撑结构10、安放椅面9的座椅支撑12和椅面9本身,椅面9的转动或摆动可以这样来实现:修改座椅装置1安装在椅柱8下端的零部件,也就是,安装可活动的星形底座3。星形底座3的特征在于,安装在中心座4上的伸出臂5中,至少有一个与中心座4铰接,并可相对于中心座4转动。
在其他实施方式中,上述中心座具有分别向四周延伸的多个延伸部,延伸部与伸出臂一一对应设置,至少一根或者所有的伸出臂分别与其对应的中心座上的延伸部铰接,伸出臂与其对应的延伸部之间设有弹性元件,该弹性元件提供抵抗伸出臂相对于中心座转动的弹性力,其他结构参照上述实施例设置。
在其他实施方式中,上述至少一根或者所有的伸出臂除了与中心座铰接,还通过一根连杆与中心座连接,从而该伸出臂、连杆和中心座之间形成曲柄滑块机构:该连杆的一端与中心座铰接,该连杆的另一端与伸出臂滑动连接;或者,该连杆的一端与伸出臂铰接,该连杆的另一端与中心座滑动连接。并且,该连杆、伸出臂和中心座中的任意两个之间设置有弹性元件(优选压簧或拉簧),该弹性元件提供抵抗伸出臂相对于中心座转动的弹性力,其他结构参照上述实施例设置。
在其他实施方式中,上述至少一根或者所有的伸出臂除了与中心座铰接,还通过两根连杆与中心座连接,从而该伸出臂、两根连杆和中心座之间形成平面四杆机构,该伸出臂、两根连杆和中心座中的任意两个之间设置有弹性元件(优选压簧或拉簧),该弹性元件提供抵抗伸出臂相对于中心座转动的弹性力,其 他结构参照上述实施例设置。
在上述各种实施方式中,星形底座的伸出臂的数量可以是3根、4根、5根、6根或者6根以上,但优选5根。
说明书、所附权利要求和附图中所描述的所有特征,无论单独还是它们的任意组合,都是本发明的重要特征。
在本说明书的描述中,参考术语“一个实施例”、“一些实施例”、“一种实施方式”、“具体实施方式”、“其他实施方式”、“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、实施方式或示例中。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,上述描述的具体特征、结构、材料或者特点也可以在任何的一个或多个实施例、实施方式或示例中以合适的方式结合。本发明记载的技术方案也包括上述描述的任意一个或多个具体特征、结构、材料或者特点以单独或者组合的方式形成的技术方案。
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、变型、删除部分特征、增加特征或重新进行特征组合形成的技术方案,凡是依据本发明的创新原理对以上实施例所作的任何简单修改、等同变化与修饰,均仍属于本发明技术方案的范围内。

Claims (18)

  1. 一种用于座椅装置的星形底座(3),包括中心座(4)和安装在中心座(4)上的多根伸出臂(5),伸出臂用于将星形底座(3)放置在地面上,其特征是:这些伸出臂(5)中的至少一根与中心座(4)铰接,并相对中心座(4)转动。
  2. 根据权利要求1所述的星形底座(3),其特征是:每根相对于中心座可转动的伸出臂(5),单独并不受其他伸出臂(5)影响地、可转动地连接在中心座(4)上。
  3. 根据权利要求1所述的星形底座(3),其特征是:
    每根相对于中心座(4)可转动的伸出臂(5)能够从起始位置转到最大可转动位置并恢复;
    和/或者,每根相对于中心座(4)可转动的伸出臂(5)是以这样的方式相对于中心座(4)转动的:在整个转动期间,这些伸出臂(5)的自由端保持它们的离地间隙;
    和/或者,每根相对于中心座(4)可转动的伸出臂(5)是以这样的方式相对于中心座(4)转动的:在中心座(4)下降时,这些伸出臂(5)保持与地面的接触;
    和/或者,至少有多根伸出臂(5)铰接在中心座(4)上并相对于中心座(4)可转动,使得在这些伸出臂(5)同时转动时,中心座(4)可降到与地面(2)接触的程度。
  4. 根据权利要求1所述的星形底座(3),其特征是:所有的伸出臂(5)均与中心座(4)铰接,并可相对于中心座(4)转动。
  5. 根据权利要求1所述的星形底座(3),其特征是:五根伸出臂(5)都被安装在中心座(4)上。
  6. 根据权利要求1所述的星形底座(3),其特征是:中心座底面(17)被制作成凸形。
  7. 根据权利要求1所述的星形底座(3),其特征是:伸出臂(5)的自由端固定有滚轮(6)。
  8. 根据权利要求1至7中的任一项所述的星形底座(3),其特征是:每根相对于中心座(4)可转动的伸出臂(5)在转动时都需抵抗弹性元件(18)的弹性力。
  9. 根据权利要求8所述的星形底座(3),其特征是:弹性元件(18)的一端作用在伸出臂(5)上,弹性元件(18)的另一端作用在中心座(4)上。
  10. 根据权利要求9所述的星形底座(3),其特征是:所述弹性元件(18)为压簧。
  11. 根据权利要求1至7中的任一项所述的星形底座(3),其特征是:单根或所有伸出臂(5)的转动可借助于锁紧元件(21)被锁紧。
  12. 根据权利要求11所述的星形底座(3),其特征是:所述锁紧元件(21)为安装在中心座(4)上面的环形锁紧元件,所有的伸出臂(5)的转动可以同时被锁住;当锁紧元件(21)围绕椅柱纵轴(13)方向相对于中心座(4)旋转到锁紧位置时,锁紧元件(21)上的制动元件嵌入中心座(4)和伸出臂(5)之间,从而阻挡伸出臂(5)相对于中心座(4)的转动。
  13. 根据权利要求12所述的星形底座(3),其特征是:锁紧元件(21)上有弧形的导槽(25),导槽(25)里面嵌有安装在中心座(4)上的导向销(26)。
  14. 根据权利要求1至7中的任一项所述的星形底座(3),其特征是:所述中心座具有分别向四周延伸的多个延伸部,延伸部与伸出臂一一对应设置,至少一根或者所有的伸出臂分别与其对应的延伸部铰接,该伸出臂与其对应的延伸部之间设有弹性元件,该弹性元件提供抵抗伸出臂相对于中心座转动的弹性力。
  15. 根据权利要求1至7中的任一项所述的星形底座(3),其特征是:所述伸出臂还通过若干根连杆与中心座连接。
  16. 根据权利要求15所述的星形底座(3),其特征是:所述伸出臂还通过一根连杆与中心座连接,这样,该伸出臂、连杆和中心座之 间形成曲柄滑块机构:该连杆的一端与中心座铰接,该连杆的另一端与伸出臂滑动连接,或者,该连杆的一端与伸出臂铰接,该连杆的另一端与中心座滑动连接;并且,该连杆、伸出臂和中心座中的任意两个之间设置有弹性元件,该弹性元件提供抵抗伸出臂相对于中心座转动的弹性力。
  17. 根据权利要求15所述的星形底座(3),其特征是:所述伸出臂还通过两根连杆与中心座连接,这样,该伸出臂、两根连杆和中心座之间形成平面四杆机构,并且,该伸出臂、两根连杆和中心座中的任意两个之间设置有弹性元件,该弹性元件提供抵抗伸出臂相对于中心座转动的弹性力。
  18. 座椅装置(1),尤其是办公座椅、工作座椅、座凳或站立辅助装置,具有如权利要求1至17中的任一项所述的星形底座(3)。
PCT/CN2020/089197 2019-05-20 2020-05-08 座椅装置及其星形底座 WO2020233417A1 (zh)

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EP20809209.8A EP3973821A4 (en) 2019-05-20 2020-05-08 CHAIR DEVICE AND ITS STAR-SHAPED BASE
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