WO2023207260A1 - 一种新型的背包支撑条及其连接关节组件 - Google Patents

一种新型的背包支撑条及其连接关节组件 Download PDF

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Publication number
WO2023207260A1
WO2023207260A1 PCT/CN2023/075928 CN2023075928W WO2023207260A1 WO 2023207260 A1 WO2023207260 A1 WO 2023207260A1 CN 2023075928 W CN2023075928 W CN 2023075928W WO 2023207260 A1 WO2023207260 A1 WO 2023207260A1
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Prior art keywords
section
joint assembly
connecting joint
spline
key
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PCT/CN2023/075928
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English (en)
French (fr)
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吴颖卓
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吴颖卓
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Publication of WO2023207260A1 publication Critical patent/WO2023207260A1/zh

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    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C13/00—Details; Accessories
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
    • A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
    • A45F3/00—Travelling or camp articles; Sacks or packs carried on the body
    • A45F2003/001—Accessories

Definitions

  • the present invention relates to the field related to backpack auxiliary accessories, and in particular to a new type of backpack support bar and its connecting joint assembly.
  • Backpacks can be divided into school bags, mountaineering bags, etc. according to different uses.
  • the back of a mountaineering bag is usually equipped with a support bar.
  • the support bar can share part of the pressure on the human body's shoulders to the human body's back and waist, reducing the burden on the shoulders and improving the comfort of backpacking.
  • the selection of support bars must not only reduce the additional load they bring as much as possible, but also have a slight elastic deformation buffering effect when in contact with the human back. Therefore, existing support bars are usually made of lightweight alloys such as aluminum alloy. .
  • the object of the present invention is to overcome the shortcomings of the prior art and provide a new type of backpack support bar and its connecting joint assembly.
  • a connecting joint assembly includes a first connecting piece, a second connecting piece, a spline piece, a spring, and a supporting piece.
  • the first connecting piece is hingedly connected to the second connecting piece, and the second connecting piece Slidingly connected to the shaft portion of the spline member, an internal key gear portion matching the key tooth portion of the spline component is provided in the first cavity of the first connecting member, and the internal key gear
  • the key tooth grooves of the inner key gear part of the spline part are arranged in a tapered shape along the axis direction.
  • the key teeth of the spline part can be along the groove of the key tooth groove of the internal key gear part of the first connecting member.
  • the wall slides, and when sliding, the spline part moves synchronously along the axis direction; the spline part is fixedly connected to the supporting part, and the spring is arranged in the second cavity of the second connecting piece Inside, the two ends of the spring conflict with the second connecting member and the supporting member respectively.
  • the offset angle range of the key teeth of the key tooth portion of the spline piece in the key tooth groove of the internal key gear portion of the first connecting member is -1° ⁇ 1°.
  • the number of key teeth of the key tooth portion of the spline component is 72.
  • the first connecting piece is provided with a hinge ring
  • the hinge ring is provided with an avoidance notch
  • the second connecting piece is provided with a hinge that matches the hinge ring of the first connecting piece.
  • the hinged shaft is provided with a limiting lug that can pass through the avoidance notch.
  • a new type of backpack support bar based on the above-mentioned connecting joint component, includes a first section, a second section, and a third section.
  • a connecting joint component is connected to the first section and the third section. Between the two sections, the first connecting piece connecting the joint assembly is fixedly connected to the first section, the second connecting piece connecting the joint assembly is fixedly connected to one end of the second section; the other The connecting joint component is connected between the second section and the third section. The first connecting piece of the connecting joint component is fixedly connected to the other end of the second section. The connecting joint component The second connecting piece is fixedly connected to the third section.
  • the third section is provided with an extension section, the extension section is telescopically connected to the third section, the third section is provided with an elastic bayonet, and the extension section is Bayonet holes corresponding to different extension lengths are provided.
  • the elastic bayonet at the third section snaps into all parts of the extension section. Describe the bayonet hole.
  • the invention not only has a slight elastic deformation buffering effect when in contact with the human body's back like the existing alloy support bars, but also can adjust the opening angle of the connecting joint component and the expansion and contraction of the extension bar according to the physical conditions of different users. length, so it can be suitable for different users and has wide versatility.
  • Figure 1 is an exploded schematic diagram of the structure of the present invention when it is provided with extension strips.
  • Figure 2 is an exploded schematic diagram of the structure of the present invention when no extension strips are provided.
  • Figure 3 is an exploded schematic diagram of the structure of the connecting joint component.
  • Figure 4 is a schematic structural diagram of the first connecting piece.
  • Figure 5 is a structural cross-sectional view of the connecting joint component when the elastic deformation buffering effect of the support bar does not occur.
  • Figure 6 is a structural cross-sectional view of the connecting joint component when the elastic deformation buffering effect of the support bar occurs.
  • Figure 7 is a partially enlarged schematic diagram of the connecting joint component when the elastic deformation buffering effect of the support bar does not occur.
  • Figure 8 is a partially enlarged schematic diagram of the connecting joint component when the elastic deformation buffering effect occurs on the support bar.
  • a connecting joint assembly 10 includes a first connecting member 11 , a second connecting member 12 , a spline member 13 , a spring 14 , and a supporting member 15 .
  • the first connecting member 11 Hinged with the second connecting piece 12 , the second connecting piece 12 is slidingly connected to the shaft part 131 of the spline part 13 , and the first cavity of the first connecting part 11 is provided with a key tooth part 132 of the spline part 13
  • the matching internal key gear part 111 has a key tooth groove 1111 arranged in a conical shape along the axial direction, and the key teeth 1321 of the key tooth part 132 of the spline member 13 are in the internal key gear of the first connecting member 11
  • the offset angle range in the key tooth groove 1111 of the spline part 111 is -1° ⁇ 1°.
  • the key teeth 1321 at the key tooth part 132 of the spline part 13 can be along the internal key gear part 111 of the first connecting member 11.
  • the groove wall 1112 of the key tooth groove 1111 slides.
  • the spline part 13 moves synchronously along the axis direction; the spline part 13 is fixedly connected to the supporting part 15.
  • a screw hole 134 is provided at the shaft rod 131 of the key member 13.
  • the spline member 13 and the supporting member 15 are specifically connected by screws 16.
  • the spring 14 is arranged in the second cavity of the second connecting member 12. The spring 14 The two ends conflict with the second connecting piece 12 and the supporting piece 15 respectively.
  • a new type of backpack support bar is based on the above-mentioned connecting joint assembly 10 and includes a first section 20 , a second section 30 , and a third section 40 .
  • a connecting joint assembly 10 Connected between the first section 20 and the second section 30, the first connecting piece 11 connecting the joint assembly 10 is fixedly connected to the first section 20, and the second connecting piece 12 connecting the joint assembly 10 and the second section One end of 30 is fixedly connected; the other connecting joint component 10 is connected between the second section 30 and the third section 40, and the first connecting piece 11 of the connecting joint component 10 is fixedly connected to the other end of the second section 30,
  • the second connecting piece 12 connecting the joint assembly 10 is fixedly connected to the third section 40 .
  • the backpack support bar of this patent can have a slight elastic deformation buffering effect when in contact with the human body's back, just like the existing aluminum alloy support bars.
  • the support bar does not have a slight elastic deformation buffering effect.
  • the angle between the first connecting piece 11 and the second connecting piece 12 is ⁇ . .
  • one end of the spring 14 connecting the joint assembly 10 resists the second connecting member 12, and the other end of the spring 14 transmits the elastic force to the supporting member 15.
  • the spring 14 pushes the spline member 13 through the supporting member 15. Pressed tightly on the first connecting member 11, as shown in FIGS. 4 and 7, the key teeth 1321 of the key tooth portion 132 of the spline member 13 are completely embedded in the keys of the internal key gear portion 111 of the first connecting member 11. Cogging1111.
  • the spring 14 restores its elastic deformation and pushes the supporting member 15 to move downward.
  • the member 15 is reset to the initial position as shown in Figure 5; at the same time, the support member 15 will synchronously drive the spline member 13 to move downward, and the spline member 13 will also be reset to the initial position as shown in Figure 5.
  • the key teeth 1321 at the key tooth portion 132 will slide downward along the groove wall 1112 of the key tooth groove 1111 at the internal spline gear portion 111 of the first connecting member 11, thereby causing the spline member 13 to move downward.
  • the key member 13 will also rotate while moving downward.
  • the spline member 13 rotates, it will drive the second connecting member 12 to rotate synchronously.
  • the second connecting member 12 is reversely deflected and reset to its original position.
  • the angle between the first connecting member 11 and the second connecting member 12 is It returns from ⁇ to ⁇ .
  • the user can also adjust the angle between the first connecting member 11 and the second connecting member 12 connecting the joint assembly 10 according to the fluctuation amplitude of the back muscles, so that the support bar is suitable for different users, thereby having Broad versatility.
  • you can directly press the support member 15 with your fingers, and push the spline member 13 from the first connecting member 11 through the support member 15.
  • the spring 14 is compressed and elastically deforms, and the key teeth of the spline member 13
  • the key teeth 1321 at the part 132 are separated from the key tooth groove 1111 at the internal key gear part 111 of the first connecting piece 11, and then the angle between the first connecting piece 11 and the second connecting piece 12 is adjusted to obtain a suitable angle.
  • the spring 14 will resume its elastic deformation due to the release of the pressure.
  • the spring 14 pushes the supporting member 15, and the supporting member 15 drives the spline member 13, so that the key teeth 1321 at the key tooth portion 132 of the spline member 13 are re-inserted into the key teeth at the internal key gear portion 111 of the first connecting member 11 In the groove 1111, the angle between the first connecting member 11 and the second connecting member 12 is fixed.
  • the first connecting piece 11 is provided with a hinge ring 112, and the hinge ring 112 is provided with an avoidance notch 1121.
  • the second connecting piece 12 is provided with a hinge shaft 121 that matches the hinge ring 112 of the first connecting piece 11.
  • the hinge shaft 121 There is a limiting ear 122 that can pass through the avoidance slot 1121. As shown in FIGS.
  • the first section 20 is provided with an extension section 50 .
  • the extension section 50 is telescopically connected to the third section 40 .
  • the third section 40 is provided with an elastic bayonet 41 .
  • the extension section 50 There are bayonet holes 51 corresponding to different extension lengths. When the extension section 50 is connected to the third section 40, the elastic bayonet 41 at the third section 40 snaps into the bayonet hole 51 of the extension section 50. . Since the third section 40 is mainly in contact with the waist of the human body to provide support, the best support effect can be obtained by adjusting the telescopic length between the extension section 50 and the third section 40 during use.

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  • Catching Or Destruction (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)

Abstract

本发明公开了一种新型的背包支撑条及其连接关节组件，包括有第一条段、第二条段、第三条段，一连接关节组件连接于第一条段和第二条段之间，连接关节组件的第一连件与第一条段固定连接，连接关节组件的第二连件与第二条段的一端固定连接；另一连接关节组件连接于第二条段和第三条段之间，连接关节组件的第一连件与第二条段的另一端固定连接，连接关节组件的第二连件与第三条段固定连接。本发明既能像现有的合金制支撑条一样在与人体背部接触时具有微小的弹性形变缓冲效应，又能根据不同使用者的形体状况来调节连接关节组件的张角、延长条段的伸缩长度，从而可适用于不同的使用者，具有广泛的通用性。

Description

一种新型的背包支撑条及其连接关节组件 技术领域
本发明涉及背包辅助配件相关领域，特别涉及一种新型的背包支撑条及其连接关节组件。
 背景技术
背包根据用途不同，又可以分为书包、登山包等。其中，登山包的包背处通常设置有支撑条，支撑条能够将人体肩部的压力分担一部分至人体背部、腰部，降低肩部的负担，提升背包时的舒适感。支撑条的选择既要尽可能降低其带来的额外负重，又要在与人体背部接触时具有微小的弹性形变缓冲效应，因此现有的支撑条通常采用铝合金等材质轻巧的合金制作而成。一方面，由于不同人体背部肌肉的起伏幅度各不相同；另一方面，不同人体的肩、背、腰的高度比例不相一致，因此需要根据自身的情况来选购相应规格的支撑条。现有的支撑条不具有通用性，无法适用于不同的使用者。为此，我们提出了一种新型的背包支撑条及其连接关节组件。
 技术问题
本发明的目的在于克服现有技术的不足，提供一种新型的背包支撑条及其连接关节组件。
 技术解决方案
一种连接关节组件，包括有第一连件、第二连件、花键件、弹簧、顶撑件，所述第一连件与所述第二连件相铰接，所述第二连件与所述花键件的轴杆部滑动连接，所述第一连件的第一空腔内设置有与所述花键件的键齿部相配合的内键齿轮部，所述内键齿轮部的键齿槽沿轴线方向呈锥状设置，所述花键件的所述键齿部处的键齿可沿所述第一连件的所述内键齿轮部处的键齿槽的槽壁进行滑移，滑移时所述花键件沿轴线方向进行同步移动；所述花键件与所述顶撑件固定连接，所述弹簧设置于所述第二连件的第二空腔内，所述弹簧的两端分别与所述第二连件和所述顶撑件相抵触。
进一步阐述，所述花键件的所述键齿部的键齿在所述第一连件的所述内键齿轮部的键齿槽内的偏移角度范围为 -1°~  1°。
进一步阐述，所述花键件的所述键齿部的键齿数为72个。
进一步阐述，所述第一连件设有铰接环，所述铰接环处设置有避空槽口，所述第二连件设有与所述第一连件的所述铰接环相配合的铰接轴，所述铰接轴处设有可穿过所述避空槽口的限位挡耳。
一种新型的背包支撑条，基于上述的一种连接关节组件，包括有第一条段、第二条段、第三条段，一连接关节组件连接于所述第一条段和所述第二条段之间，所述连接关节组件的第一连件与所述第一条段固定连接，所述连接关节组件的第二连件与所述第二条段的一端固定连接；另一连接关节组件连接于所述第二条段和所述第三条段之间，所述连接关节组件的第一连件与所述第二条段的另一端固定连接，所述连接关节组件的第二连件与所述第三条段固定连接。
具体地，所述第三条段处设置有延长条段，所述延长条段与所述第三条段伸缩连接，所述第三条段处设有弹性卡销，所述延长条段处设置有对应不同延长长度的卡销孔，在所述延长条段与所述第三条段相连接时，所述第三条段处的所述弹性卡销卡入所述延长条段的所述卡销孔。
 有益效果
本发明既能像现有的合金制支撑条一样在与人体背部接触时具有微小的弹性形变缓冲效应，又能根据不同使用者的形体状况来调节连接关节组件的张角、延长条段的伸缩长度，从而可适用于不同的使用者，具有广泛的通用性。
 附图说明
图1为本发明在设置有延长条段时的结构分解示意图。
图2为本发明在未设置有延长条段时的结构分解示意图。
图3为连接关节组件的结构分解示意图。
图4为第一连件的结构示意图。
图5为连接关节组件在支撑条未出现弹性形变缓冲效应时的结构剖视图。
图6为连接关节组件在支撑条出现弹性形变缓冲效应时的结构剖视图。
图7为连接关节组件在支撑条未出现弹性形变缓冲效应时的局部放大示意图。
图8为连接关节组件在支撑条出现弹性形变缓冲效应时的局部放大示意图。
 本发明的实施方式
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明作进一步地详细描述。
结合附图3至附图8所示，一种连接关节组件10，包括有第一连件11、第二连件12、花键件13、弹簧14、顶撑件15，第一连件11与第二连件12相铰接，第二连件12与花键件13的轴杆部131滑动连接，第一连件11的第一空腔内设置有与花键件13的键齿部132相配合的内键齿轮部111，内键齿轮部111的键齿槽1111沿轴线方向呈锥状设置，花键件13的键齿部132的键齿1321在第一连件11的内键齿轮部111的键齿槽1111内的偏移角度范围为 -1°~  1°，花键件13的键齿部132处的键齿1321可沿第一连件11的内键齿轮部111处的键齿槽1111的槽壁1112进行滑移，滑移时花键件13沿轴线方向进行同步移动；花键件13与顶撑件15固定连接，结合附图3和附图5所示，花键件13的轴杆杆131处开设有螺丝孔134，花键件13与顶撑件15之间具体采用螺钉16连接，弹簧14设置于第二连件12的第二空腔内，弹簧14的两端分别与第二连件12和顶撑件15相抵触。
结合附图2所示，一种新型的背包支撑条，基于上述的一种连接关节组件10，包括有第一条段20、第二条段30、第三条段40，一连接关节组件10连接于第一条段20和第二条段30之间，连接关节组件10的第一连件11与第一条段20固定连接，连接关节组件10的第二连件12与第二条段30的一端固定连接；另一连接关节组件10连接于第二条段30和第三条段40之间，连接关节组件10的第一连件11与第二条段30的另一端固定连接，连接关节组件10的第二连件12与第三条段40固定连接。
在连接关节组件10的作用下，本专利的背包支撑条能够像现有铝合金制支撑条一样，在与人体背部接触时也具有微小的弹性形变缓冲效应。在未与人体背部接触时，支撑条没有出现微小的弹性形变缓冲效应，此时如附图5和附图7所示，第一连件11与第二连件12之间的夹角为α。如附图5所示，连接关节组件10的弹簧14的一端抵住第二连件12，弹簧14的另一端将弹力传递至顶撑件15，弹簧14通过顶撑件15将花键件13紧压在第一连件11处，结合附图4和附图7所示，花键件13的键齿部132的键齿1321完全嵌入第一连件11的内键齿轮部111处的键齿槽1111。
而当支撑条与人体背部接触而造成其第一条段20和第二条段30因瞬间受挤压而略微张开时，结合附图6和附图8所示，此时第一连件11与第二连件12之间的夹角从α扩张为β。由于花键件13的轴杆部131与第二连件12滑动连接，第二连件12在相对第一连件11进行偏转时，花键件13也会随着第二连件12进行同步转动。如附图6所示，花键件13转动时其键齿部132处的键齿1321会沿着第一连件11的内键齿轮部111处的键齿槽1111的槽壁1112进行向上滑移；与此同时，花键件13会带动顶撑件15进行同步上移，此时弹簧14受到挤压而发生弹性形变。
鉴于第一条段20和第二条段30略微张开是瞬间受人体背部挤压所致，当短暂的挤压消失时，弹簧14因恢复弹性形变而推动顶撑件15下移，顶撑件15复位至如附图5所示的初始位置；与此同时，顶撑件15会同步带动花键件13下移，花键件13也会复位至如附图5所示的初始位置。花键件13在下移时其键齿部132处的键齿1321会沿着第一连件11的内键齿轮部111处的键齿槽1111的槽壁1112进行向下滑移，进而使得花键件13在下移同时也会发生转动。花键件13转动时会带动第二连件12进行同步转动，第二连件12反向偏转并复位至其初始位置，此时第一连件11与第二连件12之间的夹角又从β恢复为α。
另外，使用者还可根据自身背部肌肉的起伏幅度来调节连接关节组件10的第一连件11与第二连件12之间的夹角，从而使得支撑条适用于不同的使用者，从而具有广泛的通用性。调节时可直接用手指按住顶撑件15，通过顶撑件15将花键件13从第一连件11处推出，此时弹簧14受压而发生弹性形变，花键件13的键齿部132处的键齿1321脱离第一连件11的内键齿轮部111处的键齿槽1111，随后调节第一连件11与第二连件12之间的夹角，得到合适的角度后，再将按住顶撑件15的手指松开，弹簧14因所受压力解除而恢复弹性形变。弹簧14推动顶撑件15，顶撑件15带动花键件13，使得花键件13的键齿部132处的键齿1321重新插入第一连件11的内键齿轮部111处的键齿槽1111内，进而第一连件11与第二连件12之间的夹角被固定下来。由于花键件13的键齿部132的键齿1321数具体为72个，第一连件11与第二连件12之间的最小调整幅度为5°（注：360°÷ 72 = 5°），第一连件11与第二连件12之间的绝大部分夹角都能获得花键件13的键齿部132与第一连件11的内键齿轮部111之间的匹配。
第一连件11设有铰接环112，铰接环112处设置有避空槽口1121，第二连件12设有与第一连件11的铰接环112相配合的铰接轴121，铰接轴121处设有可穿过避空槽口1121的限位挡耳122。结合附图3和附图4所示，第一连件11与第二连件12相连接时，第二连件12的铰接轴121插入第一连件11的铰接环112的环口，铰接轴121处的限位挡耳122穿过铰接环112处的避空槽口1121，再转动第一连件11或第二连件12，即可实现第一连件11与第二连件12之间的铰接。
结合附图1所示，第一条段20处设置有延长条段50，延长条段50与第三条段40伸缩连接，第三条段40处设有弹性卡销41，延长条段50处设置有对应不同延长长度的卡销孔51，在延长条段50与第三条段40相连接时，第三条段40处的弹性卡销41卡入延长条段50的卡销孔51。由于第三条段40主要是与人体腰部接触来实现支撑的作用，使用时可以通过调节延长条段50与第三条段40之间的伸缩长度来获得最佳的支撑效果。

Claims (6)

  1. 一种连接关节组件（10），其特征在于：包括有第一连件（11）、第二连件（12）、花键件（13）、弹簧（14）、顶撑件（15），所述第一连件（11）与所述第二连件（12）相铰接，所述第二连件（12）与所述花键件（13）的轴杆部（131）滑动连接，所述第一连件（11）的第一空腔内设置有与所述花键件（13）的键齿部（132）相配合的内键齿轮部（111），所述内键齿轮部（111）的键齿槽（1111）沿轴线方向呈锥状设置，所述花键件（13）的所述键齿部（132）处的键齿（1321）可沿所述第一连件（11）的所述内键齿轮部（111）处的键齿槽（1111）的槽壁（1112）进行滑移，滑移时所述花键件（13）沿轴线方向进行同步移动；所述花键件（13）与所述顶撑件（15）固定连接，所述弹簧（14）设置于所述第二连件（12）的第二空腔内，所述弹簧（14）的两端分别与所述第二连件（12）和所述顶撑件（15）相抵触。
  2. 根据权利要求1所述的一种连接关节组件（10），其特征在于：所述花键件（13）的所述键齿部（132）的键齿（1321）在所述第一连件（11）的所述内键齿轮部（111）的键齿槽（1111）内的偏移角度范围为 -1°~ 1°。
  3. 根据权利要求1所述的一种连接关节组件（10），其特征在于：所述花键件（13）的所述键齿部（132）的键齿（1321）数为72个。
  4. 根据权利要求1所述的一种连接关节组件（10），其特征在于：所述第一连件（11）设有铰接环（112），所述铰接环（112）处设置有避空槽口（1121），所述第二连件（12）设有与所述第一连件（11）的所述铰接环（112）相配合的铰接轴（121），所述铰接轴（121）处设有可穿过所述避空槽口（1121）的限位挡耳（122）。
  5. 一种新型的背包支撑条，其特征在于：基于上述权利要求1至权利要求4所述的一种连接关节组件（10），包括有第一条段（20）、第二条段（30）、第三条段（40），一连接关节组件（10）连接于所述第一条段（20）和所述第二条段（30）之间，所述连接关节组件（10）的第一连件（11）与所述第一条段（20）固定连接，所述连接关节组件（10）的第二连件（12）与所述第二条段（30）的一端固定连接；另一连接关节组件（10）连接于所述第二条段（30）和所述第三条段（40）之间，所述连接关节组件（10）的第一连件（11）与所述第二条段（30）的另一端固定连接，所述连接关节组件（10）的第二连件（12）与所述第三条段（40）固定连接。
  6. 根据权利要求5所述的一种新型的背包支撑条，其特征在于：所述第一条段（20）处设置有延长条段（50），所述延长条段（50）与所述第三条段（40）伸缩连接，所述第三条段（40）处设有弹性卡销（41），所述延长条段（50）处设置有对应不同延长长度的卡销孔（51），在所述延长条段（50）与所述第三条段（40）相连接时，所述第三条段（40）处的所述弹性卡销（41）卡入所述延长条段（50）的所述卡销孔（51）。
PCT/CN2023/075928 2022-04-26 2023-02-14 一种新型的背包支撑条及其连接关节组件 WO2023207260A1 (zh)

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