WO2020029208A1 - 转轴组件及可折叠显示设备 - Google Patents
转轴组件及可折叠显示设备 Download PDFInfo
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- WO2020029208A1 WO2020029208A1 PCT/CN2018/099726 CN2018099726W WO2020029208A1 WO 2020029208 A1 WO2020029208 A1 WO 2020029208A1 CN 2018099726 W CN2018099726 W CN 2018099726W WO 2020029208 A1 WO2020029208 A1 WO 2020029208A1
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- rotating shaft
- shaft assembly
- shafts
- rotating
- adjacent
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
Definitions
- the present invention relates to the field of display technology, and in particular, to a hinge assembly and a foldable display device.
- the foldable display device can be folded to achieve a change in size of the foldable display device.
- the foldable display device includes a first part and a second part that are relatively opened and closed, and the first part and the second part are relatively opened and closed by a hinge assembly.
- the rotating shaft assembly is generally bent by means of gears, connecting rods and rotating shafts, but this structure is relatively complicated and is not conducive to large-scale popularization and application.
- the invention has a simple structure of a rotating shaft assembly and a foldable display device.
- the rotating shaft assembly includes a supporting piece, a plurality of first rotating shafts, a plurality of second rotating shafts, and a plurality of connecting members.
- Each of the first rotating shafts is fixed to the supporting piece at intervals, and two adjacent first rotating shafts pass through.
- the connecting member is movably connected with the same second rotating shaft
- the foldable display device includes a flexible screen, a first housing, a second housing, and the rotating shaft assembly, and the rotating shaft assembly is located between the first housing and the second housing and is connected to the first housing.
- a casing is connected to the second casing, and the flexible screen is disposed on the first casing and the second casing and covers the rotating shaft assembly.
- the rotating shaft assembly provided by the present invention only includes a supporting piece, a rotating shaft (including a first rotating shaft and a second rotating shaft), and a connecting piece.
- the first rotating shaft in the rotating shaft is fixed on the supporting piece, and the first connecting piece is connected through the connecting piece.
- the rotating shaft and the second rotating shaft can realize the rotation of the rotating shaft assembly, and the structure is simple.
- FIG. 1 is a schematic structural diagram of a foldable display device according to an embodiment of the present invention when flattened
- FIG. 2 is a schematic side view of a foldable display device according to an embodiment of the present invention when it is unfolded;
- FIG. 3 is a schematic side view of a foldable display device according to an embodiment of the present invention when folded;
- FIG. 4 is a schematic structural diagram of a rotating shaft assembly according to an embodiment of the present invention.
- the present invention provides a foldable display device 100.
- the foldable display device 100 may be various display devices such as a mobile phone, a tablet, an electronic reader, a computer, and an electronic display screen.
- the present invention is described using a mobile phone as an example.
- the foldable display device 100 includes a flexible screen 10, a first casing 30, a second casing 40, and a rotating shaft assembly 50.
- the rotating shaft assembly 50 includes a supporting member 20.
- the supporting member 20 may be made of a high-strength material with a certain elasticity, such as a steel sheet or a resin sheet.
- the rotating shaft assembly 50 is located between the first housing 30 and the second housing 40 and is connected to the first housing 30 and the second housing 40.
- the relative rotation of the first casing 30 and the second casing 40 causes the foldable display device 100 to be opened and closed with the rotating shaft assembly 50 as a bending position.
- the supporting member 20 is fixed on the first casing 30 and the second casing 40.
- the supporting piece 20 is curved in an arc shape.
- the flexible screen 10 is disposed on the first casing 30 and the second casing 40 and covers the supporting member 20.
- the flexible screen 10 is disposed on the support 20 and fixed to the first casing 30 and the second casing 40 so as to pass through the first casing 30 and the second casing.
- the housing 40 and the support 20 support the flexible screen 10.
- the foldable display device 100 further includes a covering member (not shown in the figure), which covers the rotating shaft assembly 50 and communicates with the first casing 30 and the second casing.
- the body 40 is hermetically connected.
- the covering member covers the rotating shaft assembly 50, so that the foldable display device 100 has a better appearance effect.
- by sealingly connecting the covering member with the first casing 30 and the second casing 40 foreign substances such as water, oxygen, and the like can be prevented from entering the flexible screen 10 through the rotating shaft assembly 50, or In other structures of the foldable display device 100, the influence of impurities such as water and oxygen on the display of the foldable display device 100 is avoided, and the life of the foldable display device 100 is extended.
- the rotating shaft assembly 50 includes a first rotating shaft 511 and a second rotating shaft 521. Each of the first rotating shaft 511 and each of the second special shafts 521 are arranged in a staggered manner. In other words, the rotating shaft assembly 50 includes two layers of rotating shafts stacked, and the two layers of rotating shafts are the first layer rotating shaft 51 and the second layer rotating shaft 52, respectively.
- the first-layer rotating shaft 51 includes a plurality of the first rotating shafts 511 arranged in parallel and spaced apart
- the second-layer rotating shaft 52 includes a plurality of the second rotating shafts 521 arranged in parallel and spaced apart.
- the first rotation shaft 511 of the first-layer rotation shaft 51 and the second rotation shaft 521 of the second-layer rotation shaft 52 are arranged alternately.
- the orthographic projection of each second rotation axis 521 on the first layer rotation axis 51 is located between two adjacent first rotation axes 511.
- Each of the first rotating shafts 511 and two second rotating shafts 521 closest to the first rotating shaft 511 are rotationally connected through a plurality of connecting pieces 53, so that the first rotating shaft 511 can be relative to the second rotating shaft 521.
- the first rotating shaft 511 is fixedly connected to the supporting member 20, that is, the sidewall of the first rotating shaft 511 and the outer surface of the supporting member 20 can be fixed by welding or gluing, so that the supporting member 20 is located in two places.
- the length of the portion between the first rotating shafts 511 remains fixed.
- the interval between two adjacent first rotating shafts 511 is the same. Since the first rotation shaft 511 is movably connected to the second rotation shaft 521, the support member 20 can ensure that the support member 20 is located between two adjacent first rotation shafts 511 when the rotation shaft assembly 30 is bent. The length of the interval remains the same.
- Adjacent second rotating shafts 521 are close to each other during the movement, so that the distance between the adjacent second rotating shafts 521 is reduced.
- a distance between two adjacent first rotating shafts 511 is greater than a distance between two adjacent second rotating shafts 521, and at this time, the same connection An included angle formed between the second rotating shaft 521 and two connecting members 53 of two adjacent first rotating shafts 511 is gradually reduced when the rotating shaft assembly 50 is bent. Since two adjacent first rotating shafts 511 are actually movably connected through the second rotating shaft 521, during the bending process, the support member 30 only needs a small force to drive the adjacent two first rotating shafts.
- the connecting member 53 is connected to both ends of the first rotating shaft 511 and the second rotating shaft 521. It can be understood that the connecting member 53 may also be connected to a middle position of the first rotating shaft 511 and the second rotating shaft 521.
- the connecting member 53 includes a damping member, and the rotating shaft assembly 50 generates rotational damping during the bending process, so that the rotating shaft assembly 50 can be positioned at any rotation position.
- first rotating shaft 511 and the second rotating shaft 521 are both cylindrical shafts, and the first rotating shaft 511 and the second rotating shaft 521 each include opposite first ends and second ends and are located at the first A middle section between one end and the second end, the diameters of the first end and the second end are smaller than the diameter of the middle section, so that first step structures 512 are formed at both ends of the first rotating shaft 511, A second step structure 522 is formed at two ends of the second rotating shaft 521.
- the damping sheet 53 includes a first end 53a connected to the first rotating shaft 511 and a second end 53b connected to the second rotating shaft 521. Both the first end 53a and the second end 53b are formed with openings.
- the diameter of the opening on the first end 53a is the same as the diameter of the first or second end of the first rotating shaft 511, so that the damping piece 53 is blocked by the first step structure 512 Movement in the middle direction.
- the aperture size of the opening on the second end 53b is the same as the diameter of the first end or the second end of the second rotating shaft 521, so that the second step structure 522 blocks the damping piece 53 to the middle section.
- the first end or the second end of the first rotating shaft 511 is inserted into the opening of the first end 53a, so that the damping plate 53 is rotatably connected to the first rotating shaft 511.
- the first end or the second end of the second rotating shaft 521 is inserted into the opening of the second end 53b, so as to realize the rotational connection between the damping plate 53 and the second rotating shaft 521.
- a fixing member 54 is provided on the damping piece 53 on the first end and the second end of the first rotating shaft 511 facing away from the first step structure 512, so as to connect a plurality of connecting pieces on the first rotating shaft 511.
- the damping pieces 53 are pressed between the first step structure 512 and the fixing member 54.
- a fixing member 54 is provided on the side of the first end and the second end of the second rotating shaft 521 facing away from the second step structure 522, so as to connect the second connecting shaft to the second rotating shaft 521.
- a plurality of damping pieces 53 are pressed between the second step structure 522 and the fixing member 54.
- the fixing member 54 is a nut, and the first and second ends of the first rotating shaft 511 and the second rotating shaft 521 are provided with threads, so that the fixing member 54 and the first A rotating shaft 511 and a second rotating shaft 521 are screwed together.
- a plurality of damping plates 53 connecting the first rotating shaft 511 and two second rotating shafts 521 closest to the first rotating shaft 511 are divided into a plurality of first damping plates 531.
- a plurality of second damping fins 532 the first damping fin 531 is connected to the first rotating shaft 511 and one of the second rotating shafts 521, and the second damping fin 532 is connected to the first rotating shaft 511 and another
- the second rotating shaft 521 is alternately disposed with the first damping piece 531 and the second damping piece 532 connected to the same first rotating shaft 511, and is similarly connected to all the second rotating shafts 521.
- the first damping piece 531 and the second damping piece 532 are also arranged alternately.
- the first damping piece 531 and the second damping piece 532 are in interference fit with the first rotating shaft 511 and the second rotating shaft 521, so that when the rotating shaft assembly 50 rotates, the first damping piece 531 and the second damping Relative rotation is performed between the pieces 532, so that the rotation shaft assembly can be controlled by controlling the magnitude of the friction between the first damping piece 531 and the second damping piece 532 and the first rotating shaft 511 and the second rotating shaft 521.
- the magnitude of the required force is 50, so that the friction force is too small, and the rotating shaft assembly 50 is prone to rotate, so it is not easy to be fixed at a certain folding angle. At the same time, it can also avoid changing the rotating shaft assembly when it is too large. 50 fold angle problem.
- the first rotating shaft 511 and the second rotating shaft 521 are connected through the damping sheet, which can not only play a movable connection function, but also can control the rotation damping function of the entire rotation shaft assembly 50.
- the present invention may also use other connecting members to connect adjacent rotating shafts, that is, the connecting members may not have a damping effect, and only serve as connecting members to movably connect adjacent rotating shafts.
- each of the first rotating shafts 511 When the rotating shaft assembly is bent, each of the first rotating shafts 511 will be moved relative to the adjacent first rotating shaft 511 by the pulling of the support piece 30 (in reality, there may be two adjacent first rotating shafts 511 moving toward each other). It is also possible that two adjacent first rotating shafts 511 are moving in a certain direction, but the moving distance of one of the first rotating shafts 511 is smaller than the moving distance of the other first rotating shaft 511, so it can be considered that one first rotating shaft 511 is opposite to Another adjacent first rotating shaft 511 moves toward each other), that is, each first rotating shaft 511 is close to the adjacent first rotating shaft 511, so that the distance between two adjacent first rotating shafts 511 becomes smaller.
- the rotating shaft assembly 30 can reduce or avoid stretching or compression of the flexible screen 10, and can ensure the stability of the flexible screen 10 during use.
- the rotation damping can also be controlled by the friction between adjacent damping plates.
- the first rotating shaft and the second rotating shaft and the damping plate can be loosely fitted.
- the bending of the rotating shaft assembly 50 is performed.
- relative rotation occurs between the adjacent first damping piece 531 and the second damping piece 532, thereby generating a friction example.
- the magnitude of the pressing force is to control the magnitude of the friction force between the first damping piece 531 and the second damping piece 532, and then to control the size of the rotation damping.
- a friction member (not shown in the figure) may be provided between two adjacent damping pieces 53 connected to any of the first rotating shaft 511 or the second rotating shaft 521 to increase the connection.
- the friction between the two adjacent damping pieces 53 on the first rotating shaft 511 or the second rotating shaft 521 that is, the first damping piece 531 and the first damping piece 53 in the embodiment shown in FIG. 2
- the friction member has a structure in which a surface friction coefficient is higher than that of the damping sheet 53 and has a greater strength.
- the structure of the friction member is the same as that of the damping plate 53, and is also connected to the first rotating shaft 511 and the second rotating shaft 521.
- a surface treatment may be performed on the damping sheet 53 to increase the friction coefficient of the surface of the damping sheet 53.
- a groove or a protrusion is formed on the surface of the damping sheet 53 through a process such as laser processing, thereby increasing the friction coefficient of the surface.
- the rotating shaft assembly 50 provided by the present invention is provided with two layers of the rotating shafts, and passes each of the first rotating shaft 511 and two second rotating shafts 521 closest to the first rotating shaft 511 through a plurality of damping plates 53. Connected so that the first rotating shaft 511 can rotate relative to the second rotating shaft 521.
- the distance between two adjacent first rotating shafts 511 does not change, and only the adjacent two The distance between the second rotating shafts 521 varies with the bending degree of the rotating shaft assembly 50, so that when the foldable display device 100 is folded or flattened, the flexible screen 10 provided on the side of the first rotating shaft 511 The bending position is not stretched or compressed, thereby extending the life of the foldable display device 100.
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Abstract
一种转轴组件（50）及可折叠显示设备（100），可折叠显示设备（100）包括转轴组件（50）。其中，转轴组件（50）包括支撑片（20）、多个第一转轴（511）、多个第二转轴（521）及多个连接件（53），相对于包括齿轮、连杆及转轴的转轴组件来说，结构简单，有利于推广使用。
Description
本发明涉及显示技术领域，尤其涉及一种转轴组件及可折叠显示设备。
可折叠显示设备可进行折叠，以实现所述可折叠显示设备的大小变化。具体的，所述可折叠显示设备包括相对开合的第一部分及第二部分，且第一部分与第二部分通过转轴组件实现相对开合。现有技术中，转轴组件一般采用齿轮加连杆加转轴的方式实现弯折，但这种结构较为复杂，不利于大规模的推广应用。
发明内容
本发明一种结构简单的转轴组件及可折叠显示设备。
所述转轴组件包括支撑片、多个第一转轴、多个第二转轴及多个连接件，各所述第一转轴间隔固定于所述支撑片上，相邻的两个所述第一转轴通过所述连接件与同一所述第二转轴活动连接
所述可折叠显示设备包括柔性屏、第一壳体、第二壳体以及所述转轴组件，所述转轴组件位于所述第一壳体与所述第二壳体之间并与所述第一壳体与所述第二壳体连接，所述柔性屏设于第一壳体、所述第二壳体上并覆盖所述转轴组件。
本发明提供的所述转轴组件，仅包括支撑片、转轴(包括第一转轴及第二转轴)及连接件，通过将转轴中的第一转轴固定于支撑片上，通过连接片连接所述第一转轴及第二转轴，即可实现转轴组件的转动，结构简单。
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付 出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明一实施例的可折叠显示设备展平时的结构示意图；
图2是本发明一实施例的可折叠显示设备展平时的侧面示意图；
图3是本发明一实施例的可折叠显示设备折叠时的侧面示意图；
图4是本发明一实施例的转轴组件的结构示意图。
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请参阅图1及图2，本发明提供一种可折叠显示设备100，所述可折叠显示设备100可以为手机、平板、电子阅读器、电脑、电子展示屏等各种显示设备。本发明以手机为例进行说明。所述可折叠显示设备100包括柔性屏10、第一壳体30、第二壳体40以及转轴组件50。所述转轴组件50包括支撑件20。所述支撑件20可采用钢片或者树脂片等强度较高且具有一定弹性的材料制造。所述转轴组件50位于所述第一壳体30与所述第二壳体40之间并与所述第一壳体30与所述第二壳体40连接，通过所述转轴组件50带动所述第一壳体30与所述第二壳体40的相对旋转，使得所述可折叠显示设备100以所述转轴组件50为折弯位置进行开合。所述支撑件20固定于第一壳体30和第二壳体40上，所述转轴组件50弯折时，所述支撑片20弯曲呈圆弧状。所述柔性屏10设于所述第一壳体30、所述第二壳体40上并覆盖所述支撑件20。换句话说，所述柔性屏10设于所述支撑件20上并与所述第一壳体30、所述第二壳体40固定，以通过所述第一壳体30、所述第二壳体40以及所述支撑件20支撑所述柔性屏10。
进一步的，所述可折叠显示设备100还包括包覆件(图中未示出)，所述包覆件包覆所述转轴组件50并与所述第一壳体30及所述第二壳体40密封连接。通过所述包覆件包覆所述转轴组件50，使得所述可折叠显示设备100具有更好的外观效果。并且，通过将所述包覆件与所述第一壳体30及所述第二 壳体40密封连接，从而避免外界的水氧等杂质通过所述转轴组件50进入所述柔性屏10或者可折叠显示设备100的其它结构内，避免水氧等杂质对所述可折叠显示设备100的显示的影响，延长所述可折叠显示设备100的寿命。
请一并参阅图3及图4，所述转轴组件50包括第一转轴511及第二转轴521，各所述第一转轴511与各所述第二专轴521错层排列。换句话说，所述转轴组件50包括层叠的两层转轴，两层所述转轴分别为第一层转轴51及第二层转轴52。所述第一层转轴51包括多个平行间隔设置的所述第一转轴511，所述第二层转轴52包括多个平行间隔设置的所述第二转轴521。所述第一层转轴51的第一转轴511与所述第二层转轴52的第二转轴521交错设置。换句话说，每个所述第二转轴521在所述第一层转轴51上的正投影位于相邻的两个所述第一转轴511之间。每个所述第一转轴511与同该第一转轴511距离最近的两个第二转轴521通过多个连接片53进行旋转连接，使得所述第一转轴511能够相对所述第二转轴521进行旋转。所述第一转轴511与所述支撑件20固定连接，即第一转轴511的侧壁与支撑件20的外表面可通过焊接或胶粘等方式固定，使得所述支撑件20位于两个所述第一转轴511之间的部分的长度保持固定。本实施例中，相邻的两个所述第一转轴511之间的间隔相同。由于所述第一转轴511与所述第二转轴521活动连接的，通过支撑件20的作用，可以保证在转轴组件30弯折时支撑件20位于相邻的两个所述第一转轴511之间的长度保持不变。具体地，当转轴组件50弯折时，由于所述第一转轴511固定于支撑件20上的位置不变，因此，所述转轴组价50弯折使得所述支撑件20进行弯折时，支撑片20在两个相邻的所述第一转轴511之间的部分拱起而形成弧形，使得所以支撑件20位于相邻两个第一转轴511之间的部分会拉动相邻的其中第一转轴511相对另一个第一转轴511相向移动，两个相邻的第一转轴511再通过连接件53带动第二转轴521朝远离两个第一转轴511的方向移动，即带动第二转轴521朝向弯折中心的位置移动。相邻的第二转轴521在移动过程中相互靠近，使得相邻的第二转轴521之间的距离减小。并且，所述转轴组件50弯折过程中，相邻的两个所述第一转轴511之间的距离大于相邻的两个所述第二转轴521之间的距离，且此时，连接同一所述第二转轴521并分别连接两个相邻的所述第一转轴511的两个所述连接件53之间形成的夹 角在所述转轴组件50弯折时逐渐减小。由于相邻的两个第一转轴511实际上是通过第二转轴521活动连接的，因此在弯折过程中，支撑件30只需要很小的作用力即可带动相邻的两个第一转轴511及相邻的两个第二转轴521相对运动，从而减轻或避免支撑件30在弯折过程中受到较大的作用力而拉伸或压缩的情况，以进一步减轻或防止贴设在支撑件30上的柔性屏10出现拉伸或压缩的情况，从而可延长柔性屏10的寿命，进而延长所述可折叠显示设备100的寿命。
本实施例中，请参阅图4，所述连接件53连接于所述第一转轴511及所述第二转轴521的两端。可以理解的是，所述连接件53还可以连接于所述第一转轴511及所述第二转轴521的中间位置。本实施例中，所述连接件53包括阻尼件，所述转轴组件50在弯折过程中阻尼片产生旋转阻尼，从而使得所述转轴组件50能够定位于任意旋转位置。具体的，所述第一转轴511及所述第二转轴521均为柱状轴，所述第一转轴511及所述第二转轴521均包括相对的第一端及第二端以及位于所述第一端与所述第二端之间的中间段，所述第一端与第二端的直径小于所述中间段的直径，使得所述第一转轴511两端均形成有第一台阶结构512，所述第二转轴521的两端形成有第二台阶结构522。所述阻尼片53包括与所述第一转轴511连接的第一端53a以及与所述第二转轴521连接的第二端53b，所述第一端53a与第二端53b上均形成有开孔，所述第一端53a上的开孔的孔径大小与所述第一转轴511的第一端或第二端的直径大小相同，从而通过所述第一台阶结构512阻挡所述阻尼片53向中间段方向的移动。所述第二端53b上的开孔的孔径大小与所述第二转轴521的第一端或第二端的直径大小相同，从而通过所述第二台阶结构522阻挡所述阻尼片53向中间段方向的移动。所述第一转轴511的第一端或者第二端插于所述第一端53a的开孔内，从而实现所述阻尼片53与所述第一转轴511转动连接。同样的，所述第二转轴521的第一端或者第二端插于所述第二端53b的开孔内，从而实现所述阻尼片53与所述第二转轴521的转动连接。并且，在所述第一转轴511的第一端及第二端上的阻尼片53背离所述第一台阶结构512一侧设置固定件54，以将连接于所述第一转轴511上的多个阻尼片53压紧于所述第一台阶结构512与所述固定件54之间。同样的，在所述第二转轴521的第一端 及第二端上的阻尼片53背离所述第二台阶结构522一侧设置固定件54，以将连接于所述第二转轴521上的多个阻尼片53压紧于所述第二台阶结构522与所述固定件54之间。本实施例中，所述固定件54为螺母，所述第一转轴511及所述第二转轴521的第一端及第二端上均设有螺纹，使得所述固定件54与所述第一转轴511及第二转轴521进行螺纹连接。
进一步的，请参阅图4，本实施例中，连接所述第一转轴511与同该第一转轴511距离最近的两个第二转轴521的多个阻尼片53分为数个第一阻尼片531及数个第二阻尼片532，所述第一阻尼片531连接所述第一转轴511与一个所述第二转轴521，所述第二阻尼片532连接所述第一转轴511与另一个所述第二转轴521，连接于同一所述第一转轴511上的所述第一阻尼片531与所述第二阻尼片532交替设置，同样的，连接于同一所述第二转轴521上的所述第一阻尼片531及第二阻尼片532也交替设置。第一阻尼片531与第二阻尼片532均与第一转轴511及第二转轴521过盈配合，从而使得所述转轴组件50进行转动时，所述第一阻尼片531与所述第二阻尼片532之间进行相对转动，从而能够通过控制所述第一阻尼片531和所述第二阻尼片532与第一转轴511及第二转轴521之间的摩擦力的大小控制转动所述转轴组件50所需力的大小，从而避免摩擦力太小时，所述转轴组件50容易发生转动，从而不容易固定于某一折叠角度的问题；同时，也能够避免太大时，不容易改变述转轴组件50的折叠角度的问题。本发明实施例中，通过阻尼片连接第一转轴511与第二转轴521，不仅可以起到活动连接作用，还可以起到控制转轴组件50整体的旋转阻尼作用。当然，可以理解地，本发明还可以采用其他连接件来连接相邻的转轴，即连接件也可以不具有阻尼作用，仅作为连接部件来活动连接相邻的转轴。
当转轴组件弯折时，受到支撑片30的拉动，各第一转轴511会相对相邻的第一转轴511相向移动(在实际看来，有可能是两个相邻的第一转轴511相向移动，也有可能是两个相邻的第一转轴511均朝某一方向移动，但其中一个第一转轴511的移动距离小于另一个第一转轴511的移动距离，因而可以认为一个第一转轴511相对相邻的另一个第一转轴511相向移动)，即各第一转轴511会靠近相邻的第一转轴511，而使得相邻的两个第一转轴511之间的距离 变小。此时支撑片30在两个相邻第一转轴511之间的部分拱起发生变形，形成外凸的弧形，但长度保持不变。相邻的两个第一转轴511由于相互靠近，带动各自的连接件53发生转动，使得连接于同一第二转轴521并分别连接相邻的两个第一转轴511的两个连接件53之间的夹角变小，推动两个连接件53共同连接的第二转轴521朝远离支撑片30的方向移动。由于阻尼片的阻尼作用，因而在弯折过程中转轴组件30可以定位在任意位置。
由于只需要转轴(包括第一转轴511及第二转轴521)及连接件53就可实现转轴组件30的弯折，因而整体结构较为简单，有利于产业内的推广应用。并且，转轴组件30可以减小或避免对于柔性屏10的拉伸或压缩，可确保柔性屏10在使用时的稳定性。
在本发明的其它实施例中，还可以通过相邻阻尼片之间的摩擦力来控制旋转阻尼，此时第一转轴及第二转轴与阻尼片可以为松动配合。本实施例中，由于连接于同一所述第一转轴511及同一所述第二转轴521上的所述第一阻尼片531及第二阻尼片532均交替设置，使得弯折所述转轴组件50时，相邻的所述第一阻尼片531及第二阻尼片532之间产生相对旋转，从而产生摩擦例。通过控制所述固定件54压紧连接于所述第一转轴511上的阻尼片53的压紧力的大小，以及所述固定件55压紧连接于所述第二转轴521上的阻尼片53的压紧力的大小以控制所述第一阻尼片531与所述第二阻尼片532之间的摩擦力的大小，进而控制旋转阻尼的大小。进一步的，可以在连接于任一所述第一转轴511或所述第二转轴521上的相邻的两个所述阻尼片53之间设置摩擦件(图中未示出)，以增连接于所述第一转轴511或所述第二转轴521上的相邻的两个所述阻尼片53之间的摩擦力(即图2所述实施例中的所述第一阻尼片531与第二阻尼片532之间的摩擦力的大小)。所述摩擦件为表面摩擦系数较所述阻尼片53高，且具有较大的强度的结构。进一步的，所述摩擦件的结构与所述阻尼片53的结构相同，同样连接所述第一转轴511及所述第二转轴521。在本发明的其它实施例中，还可以对所述阻尼片53进行表面处理，以使所述阻尼片53的表面的摩擦系数增大。例如，通过激光处理等工艺，在所述阻尼片53表面形成凹槽或凸起，从而增加其表面的摩擦系数。
本发明提供的所述转轴组件50，通过设置两层所述转轴，并将每个所述 第一转轴511与同该第一转轴511距离最近的两个第二转轴521通过多个阻尼片53连接，使得所述第一转轴511能够相对所述第二转轴521进行旋转。当弯折所述转轴组件50以使得所述可折叠显示设备100进行折叠或展平时，相邻的两个所述第一转轴511之间的距离不变，仅使得所述相邻的两个所述第二转轴521之间的距离随所述转轴组件50的弯折程度而变化，使得折叠或展平所述可折叠显示设备100时，,设于第一转轴511一侧柔性屏10的折弯位置不会受到拉伸或者压缩，从而延长可折叠显示设备100的寿命。
以上所揭露的仅为本发明一种较佳实施例而已，当然不能以此来限定本发明之权利范围，本领域普通技术人员可以理解实现上述实施例的全部或部分流程，并依本发明权利要求所作的等同变化，仍属于发明所涵盖的范围。
Claims (21)
- 一种转轴组件，其特征在于，包括支撑片、多个第一转轴、多个第二转轴及多个连接件，各所述第一转轴间隔固定于所述支撑片上，相邻的两个所述第一转轴通过各自的连接件与同一所述第二转轴活动连接。
- 如权利要求1所述的转轴组件，其特征在于，各所述连接件与所述第一转轴及所述第二转轴旋转连接。
- 如权利要求1或2所述的转轴组件，其特征在于，所述转轴组件在弯折过程中，相邻的二所述第一转轴相对相向移动。
- 如权利要求1或2所述的转轴组件，其特征在于，连接同一所述第二转轴并分别连接两个相邻的所述第一转轴的两个所述连接件之间形成的夹角在所述转轴组件弯折时逐渐减小。
- 如权利要求1所述的转轴组件，其特征在于，两个相邻的所述第一转轴之间的距离在所述转轴组件弯折时逐渐减小。
- 如权利要求1或5所述的转轴组件，其特征在于，在所述转轴组件弯折时，所述支撑片在两个相邻所述第一转轴之间的部分拱起而形成弧形。
- 如权利要求1所述的转轴组件，其特征在于，所述第二转轴在所述转轴组件弯折时朝远离所述支撑片的方向移动。
- 如权利要求1或7所述的转轴组件，其特征在于，相邻的两个所述第二转轴在所述转轴组件弯折时相互靠近。
- 如权利要求1所述的转轴组件，其特征在于，各连接件包括阻尼片，所述转轴组件在弯折过程中阻尼片产生旋转阻尼。
- 如权利要求9所述的转轴组件，其特征在于，各所述第一转轴与所述第二转轴均与相应的所述连接件的阻尼片过盈配合，使得所述第一转轴与所述阻尼片以及所述第二转轴与所述阻尼片之间产生旋转阻尼。
- 如权利要求9所述的转轴组件，其特征在于，连接同一所述第二转轴并分别与相邻的两个所述第一转轴连接的阻尼件在所述第二转轴上交替设置，以使所述转轴组件弯折过程中，相邻的两个所述阻尼片之间产生旋转阻尼。
- 如权利要求10或11所述的转轴组件，其特征在于，各连接件包括摩 擦件，所述摩擦件设于相邻的所述阻尼片之间以增强相邻的阻尼片之间的摩擦阻力。
- 如权利要求1所述的转轴组件，其特征在于，各所述第一转轴与各所述第二转轴错层排列。
- 如权利要求13所述的转轴组件，其特征在于，每一所述第二转轴在所述第一转轴所在层的投影位于相邻的两个所述第一转轴之间。
- 如权利要求1所述的转轴组件，其特征在于，所述转轴组件弯折过程中，相邻的两个所述第一转轴之间的距离大于相邻的两个所述第二转轴之间的距离。
- 如权利要求2所述的转轴组件，其特征在于，所述连接件包括相对设置的第一端及第二端，所述第一端与所述第二端上均设有一开孔，所述第一转轴插入于所述第一端的开孔内，所述第二转轴插入于所述第二转轴的开孔内，以使所述第一转轴与所述第二转轴之间旋转连接。
- 如权利要求1所述的转轴组件，其特征在于，所述支撑件为钢片。
- 如权利要求1所述的转轴组件，其特征在于，所述第一转轴的数量多于第二转轴的数量。
- 一种可折叠显示设备，其特征在于，包括柔性屏、第一壳体、第二壳体以及如权利要求1-17任一项的所述转轴组件，所述转轴组件位于所述第一壳体与所述第二壳体之间并与所述第一壳体与所述第二壳体连接，所述柔性屏设于第一壳体、所述第二壳体上并覆盖所述转轴组件。
- 如权利要求19所述的可折叠显示设备，其特征在于，所述可折叠显示设备还包括包覆件，所述包覆件覆盖所述转轴组件的弹性材料。
- 如权利要求19所述的可折叠显示设备，其特征在于，所述转轴组件弯折时所述支撑片弯曲呈圆弧状。
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| CN107277197A (zh) * | 2017-05-26 | 2017-10-20 | 珠海市魅族科技有限公司 | 铰链结构及移动终端 |
| CN207406624U (zh) * | 2017-11-06 | 2018-05-25 | 泰州市创新电子有限公司 | 一种转轴机构及其柔性屏幕 |
| CN108156777A (zh) * | 2017-12-22 | 2018-06-12 | 联想(北京)有限公司 | 一种电子设备及其转轴机构 |
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| US10073496B2 (en) * | 2015-06-26 | 2018-09-11 | Hewlett-Packard Development Company, L.P. | Hinge for a foldable display unit |
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| CN106486010A (zh) * | 2015-08-31 | 2017-03-08 | 乐金显示有限公司 | 用于柔性显示器的支撑框架和包括其的柔性显示装置 |
| US20170208699A1 (en) * | 2016-01-15 | 2017-07-20 | William James McDermid | Projected neutral bend axis hinge |
| WO2017179799A1 (ko) * | 2016-04-12 | 2017-10-19 | 삼성전자 주식회사 | 플렉서블 전자 장치 |
| CN205715240U (zh) * | 2016-04-26 | 2016-11-23 | 杭州安费诺飞凤通信部品有限公司 | 一种能用于柔性屏移动终端的铰链 |
| CN107277197A (zh) * | 2017-05-26 | 2017-10-20 | 珠海市魅族科技有限公司 | 铰链结构及移动终端 |
| CN207406624U (zh) * | 2017-11-06 | 2018-05-25 | 泰州市创新电子有限公司 | 一种转轴机构及其柔性屏幕 |
| CN108156777A (zh) * | 2017-12-22 | 2018-06-12 | 联想(北京)有限公司 | 一种电子设备及其转轴机构 |
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