WO2024098359A1 - 一种竞技类速滑冰刀 - Google Patents

一种竞技类速滑冰刀 Download PDF

Info

Publication number
WO2024098359A1
WO2024098359A1 PCT/CN2022/131284 CN2022131284W WO2024098359A1 WO 2024098359 A1 WO2024098359 A1 WO 2024098359A1 CN 2022131284 W CN2022131284 W CN 2022131284W WO 2024098359 A1 WO2024098359 A1 WO 2024098359A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
knife
bridge
tube
seat
Prior art date
Application number
PCT/CN2022/131284
Other languages
English (en)
French (fr)
Inventor
侯宇光
李明阳
郑小杰
孙钰龙
马庆伟
胡君
荆东林
Original Assignee
齐齐哈尔黑龙国际冰雪装备有限公司
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 齐齐哈尔黑龙国际冰雪装备有限公司 filed Critical 齐齐哈尔黑龙国际冰雪装备有限公司
Publication of WO2024098359A1 publication Critical patent/WO2024098359A1/zh

Links

Classifications

    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63CSKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C1/00Skates
    • A63C1/30Skates with special blades
    • A63C1/32Special constructions of the simple blade

Definitions

  • the invention relates to an ice skate, in particular to a competitive speed skating ice skate, and belongs to the technical field of sliding sports equipment.
  • Speed skating is a highly ornamental competitive sport that is deeply loved by people. Its characteristics are explosiveness and speed during the competition. Since the advent of CLAP ice skates in 1998, this blade structure has been used until now without any changes, and the research and development of sports equipment has been stagnant.
  • the existing traditional CLAP speed skating skates use a bearing connection structure and a round tube design blade tube, which results in poor stability of the shaft part, heavy weight of the skates, and weak deformation ability. It cannot meet the demand for equipment after the upgrade of speed skating technology, resulting in a short ice holding time, and cannot ensure that the athlete's force acts better on the ice surface, affecting the athlete's training and competitive performance.
  • Speed skating is a highly ornamental competitive sport that is deeply loved by people. Its characteristics are explosiveness and speed during the competition. Since the advent of CLAP ice skates in 1998, this blade structure has been used until now without any changes, and the research and development of sports equipment has been stagnant.
  • the existing traditional CLAP speed skating skates use a bearing connection structure and a round tube design blade tube, which results in poor stability of the shaft part, heavy weight of the skates, and weak deformation ability. It cannot meet the demand for equipment after the upgrade of speed skating technology, resulting in a short ice holding time, and cannot ensure that the athlete's force acts better on the ice surface, affecting the athlete's training and competitive performance.
  • a competitive speed skating skate comprises a blade bridge, a blade tube, a buffer pier, a steel shaft, a nylon seat, a barbed reserved column, an upper spring connecting seat and a spring.
  • the front end of the knife bridge is the upper knife bridge connecting part, and a buffer pier reserved hole and a tapered through hole are arranged on the rear end bottom surface of the knife bridge.
  • a rear spring connecting seat is arranged on the middle bottom surface of the knife bridge, and a buffer pier is arranged in the buffer pier reserved hole.
  • the nylon seat hanging glue is embedded in the tapered through hole.
  • a lower blade bridge connection, a front spring connection seat and a barb reserved column are arranged on the top surface of the blade tube, and the nylon seat is threadedly connected to the barb reserved column; the blade tube adopts a "T"-shaped blade tube, and the blade belt part of the blade tube is an arc-shaped design, and pits are symmetrically distributed on both sides of the blade belt.
  • the front ends of the knife bridge and the knife tube are connected by an upper knife bridge connecting part, a lower knife bridge connecting part and a steel shaft, and the rear ends of the knife bridge and the knife tube are connected by a nylon seat that tightly fits with the conical through-hole barbs, the bottom surface of the buffer pier is against the knife tube, and the spring is connected between the rear spring connecting seat and the front spring connecting seat.
  • the blade bridge is a titanium alloy blade bridge
  • the blade tube is a titanium alloy blade tube. This arrangement makes the overall weight of the product light.
  • a knife groove is provided at the axial center of the knife band of the knife tube, and the knife groove is connected to the lower blade by a screw.
  • copper pads are provided at the joints between the steel shaft and the upper blade bridge connection part and the lower blade bridge connection part.
  • the rotating mechanism composed of the copper pad and the steel shaft replaces the traditional bearing rotating mechanism, overcoming the problems of excessive rotation clearance and short life brought by the traditional bearing rotating mechanism.
  • the present invention adopts an arc design for the blade belt portion of the blade tube, which can form an uneven force on the blade during the force application process, causing the blade to deform and play a better role in force transmission.
  • the blade tube adopts a "T"-shaped design, which increases the lateral elasticity of the blade tube.
  • the blade belt adopts an arc design with regular pits, which increases its elasticity while ensuring the stability of the blade, so that the blade and the ice surface can form an inner arc bend during sliding, better fit the ice surface, increase the ice holding time, improve the energy conversion effect, reduce the energy loss of athletes, and keep the athletes from slowing down during the entire movement process.
  • the present invention uses a rotating mechanism composed of a copper pad and a steel shaft to replace the traditional bearing rotating mechanism, thus overcoming the problems of excessive rotation clearance and short life brought by the traditional bearing rotating mechanism.
  • the buffer pier of the present invention is moved forward so that it can contact the upper arm of the knife tube in advance during the movement, thereby achieving the effect of advancing the buffer movement; the nylon seat adopts a conical structure to make the guiding effect of the knife bridge more obvious during the rebound movement and the fit is higher.
  • the finishing movement mechanism of the ice skates is based on a rotating mechanism composed of a copper pad and a steel shaft as the rotating axis, and the rear of the blade bridge is separated from the blade tube, so that the ice skate blade can increase the effective contact time with the ice surface, thereby increasing the energy conversion process.
  • FIG. 1 is a schematic structural diagram of the present invention.
  • FIG. 2 is a schematic diagram of the structure of the knife bridge of the present invention.
  • FIG. 3 is a top view of FIG. 2 .
  • FIG. 4 is a schematic diagram of the structure of the knife tube of the present invention.
  • FIG. 5 is a side view of FIG. 4 .
  • Fig. 6 is a cross-sectional view taken along line A-A of Fig. 4 .
  • FIG. 7 is a schematic diagram of the motion mechanism structure of the present invention.
  • the connection mentioned in the present invention is divided into fixed connection and detachable connection.
  • the fixed connection is a non-detachable connection including but not limited to conventional fixed connection methods such as folding connection, rivet connection, bonding connection and welding connection.
  • the detachable connection includes but not limited to conventional detachable methods such as bolt connection, snap connection, pin connection and hinge connection.
  • welding connection is selected for fixed connection
  • bolt connection is selected for detachable connection.
  • a competitive speed skating skate comprises a blade bridge 1, a blade tube 2, a buffer pier 3, a steel shaft 5, a nylon seat 6, a barb reserved column 9, an upper spring connection seat 13 and a spring 14;
  • the blade bridge 1 is a titanium alloy blade bridge
  • the blade tube 2 is a titanium alloy blade tube;
  • the front end of the blade bridge 1 is an upper blade bridge connection part 10, and a buffer pier reserved hole 11 and a conical through hole 12 are arranged on the rear end bottom surface of the blade bridge 1, a rear spring connection seat 13 is arranged on the middle bottom surface of the blade bridge 1, and a buffer pier 3 is arranged in the buffer pier reserved hole 11, and the nylon seat 6 is glued and embedded in the conical through hole 12;
  • the top surface of the blade tube 2 is provided with a lower blade bridge connection part 7, a front spring connection seat 8 and a barb reserved column 9, and the nylon seat 6 and the barb reserved column 9 threaded connection;
  • the knife tube 2 adopts a "T"-shaped knife
  • the core sliding motion assembly component composed of copper pad 4 and steel shaft 5 is embedded in the blade tube 2, and the blade bridge 1 is locked to the blade tube with the copper pad and steel shaft of the rotating component embedded by screws; the buffer pier 3 is fixed to the reserved hole of the buffer pier of the blade bridge 1 by synthetic glue; the nylon seat 6 is glued and embedded in the reserved position of the back seat of the blade tube with barbs.
  • the blade bridge 1 and the blade tube 2 are assembled together by screws matching with the threads in the sleeve, wherein the length of the sleeve is 0.4mm greater than the matching part of the blade bridge 1, so that the fastened connection part of the blade bridge 1 and the steel shaft become one, and slide in the steel shaft.

Landscapes

  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

一种竞技类速滑冰刀,属于滑动运动器械技术领域,解决了传统CLAP式速度滑冰冰刀的转轴部分稳定性较差,冰刀重量较重,形变能力较弱,不能适应速度滑冰技术升级后对装备的需求,造成持冰时间短,影响竞技成绩的问题。刀管(2)采用"T"型刀管,刀管(2)的刀带部分为弧线型设计,刀带上两侧对称分布有凹坑;刀桥(1)和刀管(2)的前端通过上刀桥连接部(10)、下刀桥连接部(7)和钢轴(5)建立连接,刀桥(1)和刀管(2)的后端通过尼龙座(6)与锥形通孔(12)倒刺紧密配合建立连接,缓冲墩(3)的底面与刀管(2)相抵,弹簧(14)连接在后弹簧连接座(13)和前弹簧连接座(8)之间。可更好地贴合冰面,增加持冰时间,提高能量转化效果,减少能量损失,保持运动员在整个运动过程中不降速。

Description

一种竞技类速滑冰刀 技术领域
本发明涉及一种冰刀,具体涉及一种竞技类速滑冰刀,属于滑动运动器械技术领域。
背景技术
速度滑冰作为一项具有高度观赏性的竞技项目,深受人们的喜爱,其特点是在比赛过程中的爆发性和速度感。自从1998年CLAP冰刀问世后,此款刀体结构一直沿用至今,未得到改变,运动装备研发一直处于停滞不前的状态。现有的传统CLAP式速度滑冰冰刀采用轴承连接结构及圆管型设计刀管,致使转轴部分稳定性较差,冰刀重量较重,形变能力较弱,不能适应速度滑冰技术升级后对装备的需求,造成了持冰时间短,不能够保证运动员的发力更好的作用于冰面,影响了运动员的训练及竞技成绩。
针对如上所述,如何能够在竞技装备上进行改良,使得运动员所使用的装备能够更好的提高竞技成绩,成为了本领域亟待研究的一个主要方向。
技术问题
速度滑冰作为一项具有高度观赏性的竞技项目,深受人们的喜爱,其特点是在比赛过程中的爆发性和速度感。自从1998年CLAP冰刀问世后,此款刀体结构一直沿用至今,未得到改变,运动装备研发一直处于停滞不前的状态。现有的传统CLAP式速度滑冰冰刀采用轴承连接结构及圆管型设计刀管,致使转轴部分稳定性较差,冰刀重量较重,形变能力较弱,不能适应速度滑冰技术升级后对装备的需求,造成了持冰时间短,不能够保证运动员的发力更好的作用于冰面,影响了运动员的训练及竞技成绩。
针对如上所述,如何能够在竞技装备上进行改良,使得运动员所使用的装备能够更好的提高竞技成绩,成为了本领域亟待研究的一个主要方向。
技术解决方案
本发明所采用的技术方案如下:一种竞技类速滑冰刀,包括刀桥、刀管、缓冲墩、钢轴、尼龙座、倒刺预留柱、上弹簧连接座和弹簧。
所述刀桥的前端为上刀桥连接部,刀桥的后端底面上设置有缓冲墩预留孔和锥形通孔,刀桥的中部底面上设置有后弹簧连接座,缓冲墩预留孔内设置有缓冲墩,所述尼龙座挂胶嵌入锥形通孔内。
所述刀管的顶面上设置有下刀桥连接部、前弹簧连接座和倒刺预留柱,尼龙座与倒刺预留柱螺纹连接;所述刀管采用“T”型刀管,刀管的刀带部分为弧线型设计,刀带上两侧对称分布有凹坑。
所述刀桥和刀管的前端通过上刀桥连接部、下刀桥连接部和钢轴建立连接,所述刀桥和刀管的后端通过尼龙座与锥形通孔倒刺紧密配合建立连接,所述缓冲墩的底面与刀管相抵,所述弹簧连接在后弹簧连接座和前弹簧连接座之间。
进一步地:所述刀桥为钛合金刀桥,刀管为钛合金刀管。如此设置,使得产品整体重量轻。
进一步地:所述刀管的刀带轴向中心开有刀槽,刀槽通过螺钉连接下部刀片。
进一步地:所述钢轴与上刀桥连接部、下刀桥连接部配合连接处设置有铜垫。利用铜垫和钢轴组成的转动机构,代替传统的轴承转动机构。克服了传统轴承转动机构带来的转动间隙过大,寿命短等问题。
有益效果
与现有技术相比,本发明的有益效果在于:1、本发明将刀管的刀带部分采用弧线设计,在施力过程中能够对刀片形成不均匀力,使得刀片产生形变,起到更好地力的传导作用。刀管采用“T”型设计,增加了刀管横向的弹性。刀带采用弧形设计并带有规则的凹坑,保证刀片的稳固性的基础上,增大了其弹性,使得滑行时刀片与冰面能够形成内弧弯曲,更好地贴合冰面,增加持冰时间,提高能量转化效果,减少运动员的能量损失,保持运动员在整个运动过程中不降速。
2、本发明利用铜垫和钢轴组成的转动机构,代替传统的轴承转动机构。克服了传统轴承转动机构带来的转动间隙过大,寿命短等问题。
3、本发明缓冲墩位置前移,使得在运动过程中缓冲墩能够提前接触刀管上臂,起到缓冲运动提前的效果;尼龙座采用圆锥体结构促使刀桥在回弹运动过程中的导向作用更加明显,吻合度更高。
4、本发明运动过程中,滑冰冰刀的整理运动机理是以铜垫和钢轴组成的转动机构为转动轴,刀桥后部与刀管脱离,使得冰刀刀片能够增加有效的接触冰面时间,从而增加能量的转化过程。
附图说明
图1是本发明的结构示意图。
图2是本发明刀桥的结构示意图。
图3是图2的俯视图。
图4是本发明刀管的结构示意图。
图5是图4的侧视图。
图6是图4的沿A-A线的剖视图。
图7是本发明的运动机理结构示意图。
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明了,下面通过附图中示出的具体实施例来描述本发明。但是应该理解,这些描述只是示例性的,而并非要限制本发明的范围。此外,在以下说明中,省略了对公知结构和技术的描述,以避免不必要地混淆本发明的概念。
本发明所提到的连接分为固定连接和可拆卸连接,所述固定连接即为不可拆卸连接包括但不限于折边连接、铆钉连接、粘结连接和焊接连接等常规固定连接方式,所述可拆卸连接包括但不限于螺栓连接、卡扣连接、销钉连接和铰链连接等常规拆卸方式,未明确限定具体连接方式时,默认可在现有连接方式中找到至少一种连接方式实现该功能,本领域技术人员可根据需要自行选择。例如:固定连接选择焊接连接,可拆卸连接选择螺栓连接。
以下将结合附图,对本发明作进一步详细说明,以下实施例是对本发明的解释,而本发明并不局限于以下实施例。
实施例:如图1-7所示,一种竞技类速滑冰刀,包括刀桥1、刀管2、缓冲墩3、钢轴5、尼龙座6、倒刺预留柱9、上弹簧连接座13和弹簧14;刀桥1为钛合金刀桥,刀管2为钛合金刀管;所述刀桥1的前端为上刀桥连接部10,刀桥1的后端底面上设置有缓冲墩预留孔11和锥形通孔12,刀桥1的中部底面上设置有后弹簧连接座13,缓冲墩预留孔11内设置有缓冲墩3,所述尼龙座6挂胶嵌入锥形通孔12内;所述刀管2的顶面上设置有下刀桥连接部7、前弹簧连接座8和倒刺预留柱9,尼龙座6与倒刺预留柱9螺纹连接;所述刀管2采用“T”型刀管,刀管2的刀带部分为弧线型设计,刀带上两侧对称分布有凹坑;所述刀管2的刀带轴向中心开有刀槽15,刀槽15通过螺钉连接下部刀片;所述刀桥1和刀管2的前端通过上刀桥连接部10、下刀桥连接部7和钢轴5建立连接,所述钢轴5与上刀桥连接部10、下刀桥连接部7配合连接处设置有铜垫4,所述刀桥1和刀管2的后端通过尼龙座6与锥形通孔12倒刺紧密配合建立连接,所述缓冲墩3的底面与刀管2相抵,所述弹簧14连接在后弹簧连接座13和前弹簧连接座8之间。本实施例的速滑冰刀,铜垫4和钢轴5组成的核心滑动运动组合部件嵌入到刀管2,利用螺钉把刀桥1锁紧到已经嵌入转动部件铜垫和钢轴的刀管上;缓冲墩3通过合成胶水固定到刀桥1缓冲墩预留孔中;尼龙座6挂胶嵌入带有倒刺的刀管的后座预留位置上。通过螺钉与轴套内的螺纹相配合把刀桥1与刀管2组装到一起,其中轴套的长度大于刀桥1配合部位0.4mm,这样使得紧固后的连接部分刀桥1与钢轴成为一起,在钢轴内滑动运动。
以上实施例只是对本专利的示例性说明,并不限定它的保护范围,本领域技术人员还可以对其局部进行改变,只要没有超出本专利的精神实质,都在本专利的保护范围内。

Claims (4)

  1. 一种竞技类速滑冰刀,包括刀桥(1)、刀管(2)、缓冲墩(3)、钢轴(5)、尼龙座(6)、倒刺预留柱(9)、上弹簧连接座(13)和弹簧(14);
    所述刀桥(1)的前端为上刀桥连接部(10),刀桥(1)的后端底面上设置有缓冲墩预留孔(11)和锥形通孔(12),刀桥(1)的中部底面上设置有后弹簧连接座(13),缓冲墩预留孔(11)内设置有缓冲墩(3),所述尼龙座(6)挂胶嵌入锥形通孔(12)内;
    所述刀管(2)的顶面上设置有下刀桥连接部(7)、前弹簧连接座(8)和倒刺预留柱(9),尼龙座(6)与倒刺预留柱(9)螺纹连接;所述刀管(2)采用“T”型刀管,刀管(2)的刀带部分为弧线型设计,刀带上两侧对称分布有凹坑;
    所述刀桥(1)和刀管(2)的前端通过上刀桥连接部(10)、下刀桥连接部(7)和钢轴(5)建立连接,所述刀桥(1)和刀管(2)的后端通过尼龙座(6)与锥形通孔(12)倒刺紧密配合建立连接,所述缓冲墩(3)的底面与刀管(2)相抵,所述弹簧(14)连接在后弹簧连接座(13)和前弹簧连接座(8)之间。
  2. 根据权利要求1所述的一种竞技类速滑冰刀,其特征在于:所述刀桥(1)为钛合金刀桥,刀管(2)为钛合金刀管。
  3. 根据权利要求1所述的一种竞技类速滑冰刀,其特征在于:所述刀管(2)的刀带轴向中心开有刀槽(15),刀槽(15)通过螺钉连接下部刀片。
  4. 根据权利要求1-3任一所述的一种竞技类速滑冰刀,其特征在于:所述钢轴(5)与上刀桥连接部(10)、下刀桥连接部(7)配合连接处设置有铜垫(4)。
PCT/CN2022/131284 2022-11-10 2022-11-11 一种竞技类速滑冰刀 WO2024098359A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211406638.6 2022-11-10
CN202211406638.6A CN115607940A (zh) 2022-11-10 2022-11-10 一种竞技类速滑冰刀

Publications (1)

Publication Number Publication Date
WO2024098359A1 true WO2024098359A1 (zh) 2024-05-16

Family

ID=84878063

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/131284 WO2024098359A1 (zh) 2022-11-10 2022-11-11 一种竞技类速滑冰刀

Country Status (2)

Country Link
CN (1) CN115607940A (zh)
WO (1) WO2024098359A1 (zh)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6007075A (en) * 1997-09-16 1999-12-28 Nike, Inc. Clap skate with spring and cable biasing system
US6082744A (en) * 1997-10-24 2000-07-04 K-2 Corporation Double hinged skate
CN2659502Y (zh) * 2003-08-15 2004-12-01 刘宪国 屈趾型速滑冰刀鞋
CN205340074U (zh) * 2015-12-10 2016-06-29 杨春怀 双铰链结构架速度滑冰冰刀
CN206809715U (zh) * 2017-04-27 2017-12-29 长春百凝盾体育用品器材有限公司 U型冰刀支架
CN209316982U (zh) * 2018-12-05 2019-08-30 齐齐哈尔黑龙国际冰雪装备有限公司 一种适合高端竞技的速度滑冰冰刀
CN210674183U (zh) * 2019-08-14 2020-06-05 姜丰 防过载外挂簧内置冰刀
CN212118993U (zh) * 2020-03-05 2020-12-11 秦皇岛中北滑启体育用品有限公司 一种螺杆横穿防过载的脱位冰刀
CN215351922U (zh) * 2021-08-06 2021-12-31 齐齐哈尔黑龙国际冰雪装备有限公司 一种非圆管型大道速滑冰刀
US20220280862A1 (en) * 2019-07-30 2022-09-08 Mayflower Industries, Llc Ice skate blade with pre-applied variable curvature, variable stiffness, and modular boot mounting system

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6007075A (en) * 1997-09-16 1999-12-28 Nike, Inc. Clap skate with spring and cable biasing system
US6082744A (en) * 1997-10-24 2000-07-04 K-2 Corporation Double hinged skate
CN2659502Y (zh) * 2003-08-15 2004-12-01 刘宪国 屈趾型速滑冰刀鞋
CN205340074U (zh) * 2015-12-10 2016-06-29 杨春怀 双铰链结构架速度滑冰冰刀
CN206809715U (zh) * 2017-04-27 2017-12-29 长春百凝盾体育用品器材有限公司 U型冰刀支架
CN209316982U (zh) * 2018-12-05 2019-08-30 齐齐哈尔黑龙国际冰雪装备有限公司 一种适合高端竞技的速度滑冰冰刀
US20220280862A1 (en) * 2019-07-30 2022-09-08 Mayflower Industries, Llc Ice skate blade with pre-applied variable curvature, variable stiffness, and modular boot mounting system
CN210674183U (zh) * 2019-08-14 2020-06-05 姜丰 防过载外挂簧内置冰刀
CN212118993U (zh) * 2020-03-05 2020-12-11 秦皇岛中北滑启体育用品有限公司 一种螺杆横穿防过载的脱位冰刀
CN215351922U (zh) * 2021-08-06 2021-12-31 齐齐哈尔黑龙国际冰雪装备有限公司 一种非圆管型大道速滑冰刀

Also Published As

Publication number Publication date
CN115607940A (zh) 2023-01-17

Similar Documents

Publication Publication Date Title
EP0627948A4 (en) CASTER BRAKE ON WHEELS.
WO2024098359A1 (zh) 一种竞技类速滑冰刀
JP3274498B2 (ja) ローラスケート用漸次作動ブレーキ
CN209316982U (zh) 一种适合高端竞技的速度滑冰冰刀
US9782665B2 (en) Roller skate
CN209630572U (zh) 一种体育类篮球训练用传球训练装置
CN207342088U (zh) 蹦床
CN206555331U (zh) 一种新型浮动拉杆结构双面碟刹
CN108678479B (zh) 一种利用转角位移的金属耗能器
CN211961105U (zh) 一种防砸安全鞋的包头
CN203663417U (zh) 冰刀片
CN211935521U (zh) 一种无螺母卡式短道冰刀结构
CN205541872U (zh) 一种新的编钟的甬钟及钮钟固定结构
CN210751192U (zh) 一种乒乓球练习器
CN207342138U (zh) 一种刷式滑块旱冰球球杆
CN112722065B (zh) 一种高强度新能源汽车的转向结构
CN209398134U (zh) 一种铝合金窗户导轨
CN220912119U (zh) 一种具有滚珠式旋转握把结构的复合弓
CN211585170U (zh) 新型轮滑
CN205924928U (zh) 一种控制盒防变形滑板车
CN220193947U (zh) 一种监控功能的雪地滑板
CN207677582U (zh) 一种改进型导通结构
CN219896968U (zh) 用于羽毛球拍的金属中管
CN208354739U (zh) 一种可以变大的雪地靴
CN216526571U (zh) 一种便于组装拆卸的眼镜