WO2018214292A1 - 推车 - Google Patents

推车 Download PDF

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Publication number
WO2018214292A1
WO2018214292A1 PCT/CN2017/096830 CN2017096830W WO2018214292A1 WO 2018214292 A1 WO2018214292 A1 WO 2018214292A1 CN 2017096830 W CN2017096830 W CN 2017096830W WO 2018214292 A1 WO2018214292 A1 WO 2018214292A1
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WO
WIPO (PCT)
Prior art keywords
tooth
teeth
flower
frame
angle
Prior art date
Application number
PCT/CN2017/096830
Other languages
English (en)
French (fr)
Inventor
郑志清
Original Assignee
稳正企业股份有限公司
东莞稳健高尔夫球用品有限公司
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 稳正企业股份有限公司, 东莞稳健高尔夫球用品有限公司 filed Critical 稳正企业股份有限公司
Priority to EP17910690.1A priority Critical patent/EP3632771A4/en
Priority to AU2017415231A priority patent/AU2017415231A1/en
Priority to JP2019563381A priority patent/JP6826675B2/ja
Priority to CA3063218A priority patent/CA3063218A1/en
Publication of WO2018214292A1 publication Critical patent/WO2018214292A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B7/00—Carriages for children; Perambulators, e.g. dolls' perambulators
    • B62B7/04—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
    • B62B7/06—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable
    • B62B7/062—Coupling unit between front wheels, rear wheels and handle
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B55/00—Bags for golf clubs; Stands for golf clubs for use on the course; Wheeled carriers specially adapted for golf bags
    • A63B55/60—Wheeled carriers specially adapted for golf bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B7/00—Carriages for children; Perambulators, e.g. dolls' perambulators
    • B62B7/04—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
    • B62B7/06—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable
    • B62B7/064—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable the handle bar being parallel to the front leg
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B7/00—Carriages for children; Perambulators, e.g. dolls' perambulators
    • B62B7/04—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
    • B62B7/06—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable
    • B62B7/08—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable in the direction of, or at right angles to, the wheel axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2205/00—Hand-propelled vehicles or sledges being foldable or dismountable when not in use
    • B62B2205/18—Geared articulations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2205/00—Hand-propelled vehicles or sledges being foldable or dismountable when not in use
    • B62B2205/20—Catches; Locking or releasing an articulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2205/00—Hand-propelled vehicles or sledges being foldable or dismountable when not in use
    • B62B2205/20—Catches; Locking or releasing an articulation
    • B62B2205/24—Catches; Locking or releasing an articulation to hold in the folded position

Definitions

  • the utility model provides a stroller, in particular to a stroller such as a baby stroller or a golf bag stroller of three or more rounds, in particular to a left and right folding joint mechanism of the stroller.
  • the stroller of the present invention is a baby stroller, a golf bag stroller, etc., which generally includes three or more rounds, and the utility model especially refers to a stroller, so the following description is a four-wheeled baby.
  • the cart is a representative.
  • the pinion gear When the stroller is unfolded or folded, when the rotation angle is constant, the pinion gear has a small number of teeth, and when it is engaged with the inner and outer gears of the rotatable member, the contact ratio is inevitably small, and the contact is relatively small. Small unit teeth are naturally stressed; therefore, when the folded joint is subjected to external forces (including the rotating force of unfolding or folding), the gear is more susceptible to damage, resulting in shortened service life.
  • the commonly used gears on the cart are all complete gears, that is, the angle between the adjacent two tooth tips can be divided by 360°. This design invisibly limits the lower frame and the rear frame. The angle of the angle can not achieve the function of freely adjustable, which greatly affects the freedom and flexibility of product design.
  • the purpose of the utility model is to: 1. Provide a cart that can increase the strength of the gear, which can prolong its service life. 2. Providing a cart with an adjustable angle of the frame angle, which makes the design freedom and flexibility of the product better.
  • the cart of the present invention comprises: an upper frame; a lower frame; a rear wheel frame; and at least one folding joint mechanism; the folding joint mechanism is disposed on the upper frame and the lower frame And the rear wheel frame, comprising: a lower frame joint connecting one end of the lower frame, the lower frame joint having a first opening, the edge of the first opening having a first row of teeth; a frame joint connecting one end of the upper frame, the upper frame joint having a second opening, the edge of the second opening having a second row of teeth; a rear wheel frame joint connecting the rear wheel frame One end; and a linkage gear unit, Between the lower frame joint and the upper frame joint, the interlocking gear unit has a first flower tooth and a second flower tooth, and the first flower tooth and the second flower tooth rotate coaxially.
  • first flower tooth is engaged with the first row of teeth
  • second flower tooth is engaged with the second row of teeth
  • first flower tooth has a tooth number N1
  • the second flower tooth has a tooth number N2, N1 and N2 is greater than or equal to 6.
  • the above-mentioned stroller is especially a stroller or a golf bag stroller of three or more rounds.
  • the first first row of teeth has a first axis, a first tooth, a second tooth, and the second tooth is adjacent to the first tooth, the first tooth has a first end point, the first tooth An end point is connected to the first axis to form a first virtual line, the second tooth has a second end, and the second end is connected to the first axis to form a second virtual line, the second virtual line Forming a first angle ⁇ 1 with the first imaginary line;
  • the second row of teeth has a second axis, a third tooth, and a fourth tooth, the fourth tooth being adjacent to the third tooth, the third The tooth has a third end point, and the third end point is connected to the second axis to form a third virtual line, the fourth tooth has a fourth end point, and the fourth end point is connected with the second axis to form a fourth a virtual line, the third virtual line and the fourth virtual line form a second angle ⁇ 2, the first and second rows of teeth having a number of teeth N3, N4, the upper frame
  • At least one of the number of teeth N3 and N4 of the first and second rows of teeth is not a positive integer.
  • the number of teeth N1 and N2 of the first and second teeth are positive integers.
  • the sum of the third angle ⁇ 3 and the fourth angle ⁇ 4 is between 120 degrees and 240 degrees.
  • the first flower teeth and the second flower teeth are separated from each other.
  • the first flower tooth and the second flower tooth are fixedly connected.
  • the interlocking gear unit further includes a base between the first flower tooth and the second flower tooth, and the diameter of the base is larger than the diameter of the first flower tooth.
  • a cart includes: an upper frame extending outward in a first direction; a lower frame extending outward in a second direction; a rear wheel Rack, The rear wheel frame extends outward in a third direction; at least one folding joint mechanism is disposed between the upper frame, the lower frame and the rear wheel frame, and includes: a lower frame joint, and the lower frame is connected One end of the lower frame joint has a first opening, the edge of the first opening has a first row of teeth; an upper frame joint connecting one end of the upper frame, the upper frame joint has a second An opening, the edge of the second opening has a second row of teeth; a rear wheel frame joint connecting one end of the rear wheel frame; and a linkage gear unit disposed on the lower frame joint and the upper frame Between the joints, the interlocking gear unit has a first flower tooth and a second flower tooth, the first flower tooth and the second flower tooth rotate coaxially, and the first flower tooth and the first row tooth The second flower tooth is engaged with the second row of
  • the first flower tooth has a tooth number N1
  • the second flower tooth has a tooth number N2.
  • the first tooth has a first axis and a first tooth. a second tooth adjacent to the first tooth, the first tooth having a first end point, the first end point and the first axis a second virtual line is formed on the second line, the second end is connected to the first axis to form a second virtual line, and the second virtual line forms a first line with the first virtual line.
  • An angle ⁇ 1; the second row of teeth has a second axis, a third tooth, a fourth tooth, the fourth tooth is adjacent to the third tooth, and the third tooth has a third end point,
  • the third end point and the second axis are connected to form a third virtual line
  • the fourth tooth has a fourth end point
  • the fourth end point is connected with the second axis to form a fourth virtual line
  • the third virtual line Forming a second angle ⁇ 2 with the fourth imaginary line
  • the first and second rows of teeth having the number of teeth N3, N4, and the second direction having a third angle ⁇ 3 with the third direction, the third direction
  • the first direction has a fourth angle ⁇ 4; wherein N1, N2, ⁇ 1, ⁇ 2 satisfy the following relationship:
  • N3 and N4 are both positive integers, N1 and N2 are both positive integers, and ⁇ 3 and ⁇ 4 are both between 30 and 150 degrees.
  • the above-mentioned stroller is especially a stroller such as a baby stroller or a golf bag stroller of three or more rounds.
  • the number of teeth N1 and N2 of the first and second teeth is greater than or equal to 6.
  • the first direction, the second direction, and the third direction of the lower frame, the upper frame, and the rear wheel frame are different from each other.
  • the sum of the angle between the third included angle ⁇ 3 and the fourth included angle ⁇ 4 is between 120 degrees and 240 degrees.
  • the first flower tooth and the second flower tooth may be separately and independently separated.
  • the first flower tooth and the second flower tooth may be fixedly coupled together.
  • the interlocking gear unit further includes a base between the first flower tooth and the second flower tooth, and the diameter of the base is larger than the diameter of the first flower tooth.
  • first and second rows of teeth 14, 24 are at least one design with incomplete teeth, the angle ⁇ 1 between the lower frame 1 and the rear wheel frame 3 can be arbitrarily changed and adjusted, and the larger and larger The freedom and flexibility of the frame design.
  • Fig. 1 is a perspective view showing the unfolded state of the present invention.
  • Figure 2 is a perspective view of the rear side of the folded joint mechanism of Figure 1.
  • Figure 3 is an exploded perspective view of the folded joint mechanism of Figure 1.
  • Figure 4 is an enlarged schematic view of the portion of the interlocking gear unit of Figure 3.
  • Figure 5 is a combined cross-sectional view of the folded joint mechanism of Figure 1.
  • Figure 6 is a schematic side view of the other side of the folded joint mechanism of Figure 1.
  • Figure 7 is an enlarged schematic view showing the first row of teeth of the lower frame joint of Figure 3.
  • Figure 8 is an enlarged schematic view showing the second row of teeth of the upper frame joint of Figure 3.
  • Figure 9 is a side elevational view of the angle between the frames when the utility model is deployed.
  • Figure 10 is a perspective view of a second embodiment of the interlocking gear unit of the present invention.
  • Figure 11 is a perspective view of a third embodiment of the interlocking gear unit of the present invention.
  • Figure 12 is another perspective view of a third embodiment of the interlocking gear unit of the present invention.
  • FIG. 13a-13d are schematic views of various aspects of the first and second tooth units of the present invention.
  • the utility model comprises: a lower frame 1; an upper frame 2; a rear wheel frame 3; and at least one folding joint mechanism 100;
  • the lower frame 1 has at least one front wheel 11 at the bottom end, and a lower frame joint 10 at the upper end, the lower end of the outer frame joint 10 has a notch 2 at the lower end, and the first inner opening 13 has a first opening 13
  • the edge (upper edge) of an opening 13 has a first row of teeth 14;
  • the upper frame 2 has a handle 21 at the upper end and an upper frame joint 20 at the bottom end.
  • the lower end of the outer frame joint 20 has a notch 22 at the lower end of the outer frame joint, and a second opening 23 at the inner upper end.
  • the second opening 23 The edge (bottom edge) has a second row of teeth 24;
  • the rear wheel frame 3 the bottom end has at least one rear wheel 31, the upper end has at least one rear wheel frame joint 30, the rear end of the outer side of the rear wheel frame joint 30 has a notch 32;
  • the at least one folding joint mechanism 100 is disposed between the lower frame 1, the upper frame 2 and the rear wheel frame 3, and includes the lower frame joint 10, the upper frame joint 20, and the rear wheel frame joint 30 described above.
  • a linkage gear unit 4 the linkage gear unit 4 is disposed between the lower frame joint 10 and the upper frame joint 20, and has first and second teeth 41, 42 separated from each other, the first And the second flower teeth 41, 42 are disposed on one side of the rear wheel frame joint 30 by a pin 40, and are coaxially rotatable, and the flower teeth 41 are positioned to engage the first row of the lower frame joint a second tooth 42 that is positioned to engage the second row of teeth 24 of the upper frame joint; wherein the number of teeth N1 and N2 of the first flower teeth 41, 42 are both greater than or equal to 6, and both are A positive integer, for example, in the present embodiment, the number of teeth N1 of the first flower teeth 41 may be 7 teeth, and the number of teeth N2 of the second flower teeth 42 may be 6 teeth.
  • the at least one folding joint mechanism 100 includes the left and right folding joint mechanisms, and the left and right folding joint mechanisms have the same structure, one of which is another mirror image, so the following description is in the singular ( Side), but will still apply to both the left and right sides.
  • the lower frame joint 10, the upper frame joint 20 and the rear wheel frame joint 30 are screwed and combined by a fixing screw 33, so that the lower frame joint 10 is located at the upper frame joint 20 and the rear wheel frame.
  • the first and second rows of teeth 14, 24 and the interlocking gear unit 4 are engaged with each other to form a gear set.
  • the at least one folding joint mechanism 100 is respectively disposed at a front end and a rear end of the rear wheel frame joint 30 with a control mechanism 5 and a buckle 6.
  • the first card can be formed by the control mechanism 5.
  • the lock is locked, and the second lock is formed by the buckle 6 to avoid unintentional closing.
  • the first row of teeth 14 of the lower frame joint has a first axis 140 , a first tooth 141 and a second tooth 142 , and the second tooth 42 and the first tooth 141 .
  • the first tooth 141 has a first end point P1
  • the first end point P1 is connected to the first axis 140 to form a first virtual line L1
  • the second tooth 142 has a second end point P2.
  • the second end point P2 is connected to the first axis 140 to form a second imaginary line L2, and the second imaginary line L2 forms a first angle ⁇ 1 with the first imaginary line L1;
  • the fourth tooth 244 is adjacent to the second tooth 243.
  • the third tooth 243 has a third end point P3, and the third end point P3 is
  • the second axis 240 is connected to form a third virtual line L4.
  • the fourth end point 244 has a fourth end point P4.
  • the fourth end point P4 is connected to the second axis 240 to form a fourth virtual line L4.
  • the virtual line L3 and the fourth virtual line L4 form a second angle ⁇ 2.
  • the upper frame 2 extends outward in a first direction d1
  • the lower frame 1 extends outward in a second direction d2
  • the rear wheel frame 3 facing one
  • the third direction d3 extends outwardly
  • the second direction d2 and the third direction d3 have a third angle ⁇ 3
  • the third direction d3 has a fourth angle ⁇ 4 with the first direction d1.
  • the design of the gear of the at least one folding joint mechanism 100 of the present invention must satisfy the following relationship:
  • N3 is the number of teeth of the first row of teeth 14
  • N4 is the number of teeth of the second row of teeth 24, and the number of teeth N1 and N2 of the first and second teeth 41, 42 are all positive integers, and the first and second rows of teeth At least one of the number of teeth N3 and N4 of 14, 24 is not a positive integer.
  • the angle between the third angle ⁇ 3 and the fourth angle ⁇ 4 is between 30 and 150 degrees, and the sum of the two is between 120 and 240 degrees. When the sum of the two angles is between the range When inside, the angle when the cart is fully deployed is relatively stable.
  • the interlocking gear unit 4' of the embodiment is composed of first and second teeth 43 and 44, and is The pin 40 is mounted for coaxial rotation, and the first and second teeth 43 and 44 may be fixedly coupled together by welding or the like, and rotated together on the pin 40 as a unit, wherein the first flower tooth 43
  • the number of teeth is 7 teeth
  • the number of teeth of the second flower teeth 44 is 6 teeth to achieve the same effect as the first embodiment described above.
  • the interlocking gear unit 4" includes: a first and a second spurs 45, 46, one of which is located at the same a base 47 between the first and second teeth 45, 46 and a base 47 for wearing the first and second teeth 45, 46 and the base 47 a mounting pin 40; wherein the base 47 has a larger diameter than the first and second teeth 45, 46, and has a notch 471 thereon for mounting identification, thereby achieving the above
  • the same efficacy of an embodiment includes: a first and a second spurs 45, 46, one of which is located at the same a base 47 between the first and second teeth 45, 46 and a base 47 for wearing the first and second teeth 45, 46 and the base 47 a mounting pin 40; wherein the base 47 has a larger diameter than the first and second teeth 45, 46, and has a notch 471 thereon for mounting identification, thereby achieving the above
  • the same efficacy of an embodiment is a first and a second spurs 45, 46, one of which is located at the same a
  • FIGS. 14a and 14b are various aspects of the first and second teeth of the first and second rows of the present invention. Examples of the aspects are intended to illustrate the present invention.
  • the first tooth and the second tooth in the utility model, wherein the concept of the adjacent two teeth can be represented by the adjacent first tooth unit and the second tooth unit, as long as it has repeated representations in adjacent two tooth units.
  • the end point P and the imaginary line L are exemplified in FIG. 13a.
  • the first tooth unit in the figure includes a large one, two small teeth, and the second tooth unit and the first tooth unit are repeated periodic designs.
  • the tooth unit The angle ⁇ is determined from the repetition point of the first tooth unit and the second tooth unit, that is, under the condition of a periodic unit of effective contact.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Physical Education & Sports Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Handcart (AREA)
  • Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
  • Pivots And Pivotal Connections (AREA)
  • Gears, Cams (AREA)
  • Gear Transmission (AREA)

Abstract

一种推车，该推车包含：一上车架（2）；一下车架（1）；一后轮车架（3）；及至少一折叠关节机构（100）；折叠关节机构（100）设于上、下车架（2,1）与后轮车架（3）之间，包含：一下车架关节（10），连接下车架（1）的一端，具有一第一排齿（14）；一上车架关节（20），连接上车架（2）的一端，具有一第二排齿（24）；一后轮车架关节（30），连接后轮车架（3）的一端；及一连动齿轮单元（4），设于上、下车架关节（20,10）之间，具有一第一花齿（41）及一第二花齿（42），第一花齿（41）该第二花齿（42）为同轴转动，且分别与第一及第二排齿（14,24）啮接，第一花齿（41）具有齿数N1，第二花齿（42）具有齿数N2，N1与N2皆大于等于6。其花齿的强度增加，使用寿命延长，并且增加了齿轮的设计自由度及弹性。

Description

推车 技术领域
本实用新型提供一种推车，尤指一种三轮或三轮以上的婴儿推车、高尔夫球袋推车等推车，特别是针对该等推车的左、右侧折叠关节机构。
背景技术
本实用新型所称推车，是广泛包括三轮或三轮以上的婴儿推车、高尔夫球袋推车等，而本实用新型尤指是婴儿推车，故以下的叙述即以四轮式婴儿推车为代表说明。
习知婴儿推车，大都使用齿数较少的齿轮，虽结构简单，但具有以下的缺失，有待改进。
1.在婴儿推车展开或收合时，其旋转角度为一定的状况下，小齿轮因为齿数较少，与可旋转构件的内、外齿轮啮接时，其接触比势必较小，接触比较小则单位齿承受应力自然较大；因此，当折叠关节在承受外力时(包括展开或收合的旋转力量)，齿轮较易受损，致缩短其使用寿命。
2.另外，常见使用在推车上齿轮，皆为完全齿齿轮，也就是相邻两齿尖端所夹的夹角可整除360°，该设计无形中限制了下车架与后轮车架的夹角角度，无法达到可随意调整的功能，大大影响了产品设计的自由度及弹性。
发明内容
本实用新型的目的是在于：1、提供一种可增加齿轮强度的推车，可延长其使用寿命。2、提供一种车架夹角角度可随意调整的推车，使产品设计的自由度及弹性更佳。
为达上述目的，本实用新型的推车包含：一上车架；一下车架；一后轮车架；及至少一折叠关节机构；该折叠关节机构设于该上车架、该下车架与该后轮车架之间，包含：一下车架关节，连接该下车架的一端，该下车架关节具有一第一开口，该第一开口的边缘具有一第一排齿；一上车架关节，连接该上车架的一端，该上车架关节具有一第二开口，该第二开口的边缘具有一第二排齿；一后轮车架关节，连接该后轮车架的一端；及一连动齿轮单元， 设于该下车架关节与该上车架关节之间，该连动齿轮单元具有一第一花齿及一第二花齿，该第一花齿与该第二花齿为同轴转动，且该第一花齿与该第一排齿啮接，该第二花齿与该第二排齿啮接，其中该第一花齿具有齿数N1，该第二花齿具有齿数N2，N1与N2皆大于等于6。
上述该推车尤指是三轮或三轮以上的婴儿推车、高尔夫球袋推车。
上述该第一第一排齿具有一第一轴心，一第一齿，一第二齿，该第二齿与该第一齿相邻，该第一齿具有一第一端点，该第一端点与该第一轴心联机形成一第一虚拟线，该第二齿具有一第二端点，该第二端点与该第一轴心联机形成一第二虚拟线，该第二虚拟线与第一虚拟线形成第一夹角θ1；该第二排齿中具有一第二轴心，一第三齿，一第四齿，该第四齿与该第三齿相邻，该第三齿具有一第三端点，该第三端点与该第二轴心联机形成一第三虚拟线，该第四齿具有一第四端点，该第四端点与该第二轴心联机形成一第四虚拟线，该第三虚拟线与第四虚拟线形成第二夹角θ2，该第一及第二排齿具有齿数N3、N4，该上车架朝一第一方向往外延伸，该下车架朝一第二方向往外延伸，该后轮车架朝一第三方向往外延伸，该第二方向与该第三方向具有一第三夹角θ3，该第三方向与该第一方向具有一第四夹角θ4，且N1、N2、θ1、θ2满足以下关系式：
360/θ1＝N3，θ1>0；
360/θ2＝N4，θ2>0；
(N2/N4)*(N3/N1)＝θ4/θ3，θ3、θ4皆介于30～150度之间。
上述该第一及第二排齿的齿数N3、N4中至少一个不为正整数。
上述该第一及第二花齿的齿数N1、N2皆为正整数。
上述该第三夹角θ3及第四夹角θ4相加总和介于120度～240度之间。
上述该第一花齿与该第二花齿为彼此分离。
上述该第一花齿与该第二花齿为固定连接。
上述该连动齿轮单元更包含一基座，该基座位于该第一花齿及该第二花齿之间，且该基座的直径大于该第一花齿的直径。
本实用新型另一较佳实施例的推车，包含：一上车架，该上车架朝一第一方向往外延伸；一下车架，该下车架朝一第二方向往外延伸；一后轮车架， 该后轮车架朝一第三方向往外延伸；至少一折叠关节机构，设于该上车架、该下车架与该后轮车架之间，包含：一下车架关节，连接该下车架的一端，该下车架关节具有一第一开口，该第一开口的边缘具有一第一排齿；一上车架关节，连接该上车架的一端，该上车架关节具有一第二开口，该第二开口的边缘具有一第二排齿；一后轮车架关节，连接该后轮车架的一端；及一连动齿轮单元，设于该下车架关节与该上车架关节之间，该连动齿轮单元具有一第一花齿及一第二花齿，该第一花齿与该第二花齿为同轴转动，该第一花齿与该第一排齿啮接，该第二花齿与该第二排齿啮接，该第一花齿具有齿数N1，该第二花齿具有齿数N2，该第一排齿具有一第一轴心，一第一齿，一第二齿，该第二齿与该第一齿相邻，该第一齿具有一第一端点，该第一端点与该第一轴心联机形成一第一虚拟线，该第二齿具有一第二端点，该第二端点与该第一轴心联机形成一第二虚拟线，该第二虚拟线与第一虚拟线形成第一夹角θ1；该第二排齿中具有一第二轴心，一第三齿，一第四齿，该第四齿与该第三齿相邻，该第三齿具有一第三端点，该第三端点与该第二轴心联机形成一第三虚拟线，该第四齿具有一第四端点，该第四端点与该第二轴心联机形成一第四虚拟线，该第三虚拟线与第四虚拟线形成第二夹角θ2，该第一及第二排齿具有齿数N3、N4，且该第二方向与该第三方向具有一第三夹角θ3，该第三方向与该第一方向具有一第四夹角θ4；其中，N1、N2、θ1、θ2满足以下关系式：
360/θ1＝N3，θ1>0；
360/θ2＝N4，θ2>0；
(N2/N4)*(N3/N1)＝θ4/θ3，θ3、θ4皆介于30～150度之间；
且N3与N4中至少一个不为正整数，N1、N2皆为正整数，θ3、θ4皆介于30～150度之间。
上述该推车尤指是三轮或三轮以上的婴儿推车、高尔夫球袋推车等推车。
上述该第一及第二花齿的齿数N1、N2皆大于等于6。
上述该下车架、上车架及后轮车架的第一方向、该第二方向与该第三方向彼此不同。
上述该第三夹角θ3夹角与第四夹角θ4角度相加总和介于120度～240度之间。
上述该第一花齿与该第二花齿可各别分开独立。
上述该第一花齿与该第二花齿可被固定连接在一起。
上述该连动齿轮单元更包含一基座，该基座位于该第一花齿及该第二花齿之间，且该基座的直径大于该第一花齿的直径。
本实用新型的有益效果在于：
1.在展开及收合的旋转角度不变的情况下，由于第一及第二花齿41、42的齿数N1、N2是大于等于6，使得花齿与排齿的接触比增加变大，不但会有较多的花齿可提供支撑力道，且单位齿承受应力也会降低减少许多，使得花齿的强度增加，因而可延长其使用寿命。
2.由于第一及第二花齿41、42的齿数是大于等于6，不但是同轴旋转，且齿数与齿轮模数亦可做不同的变化，大大增加了齿轮的设计自由度及弹性。
3.由于第一及第二排齿14、24是至少一个为不完全齿的设计，使得下车架1与后轮车架3之间的夹角θ1，可以任意改变调整，更大大增加了车架设计的自由度及弹性。
附图说明
图1是本实用新型展开状态的立体图。
图2是图1中折叠关节机构后侧的立体图。
图3是图1中折叠关节机构的立体分解图。
图4是图3中连动齿轮单元部份的放大示意图。
图5是图1中折叠关节机构的组合剖视图。
图6是图1中折叠关节机构的另一侧示意图。
图7是图3中下车架关节第一排齿部份的放大示意图。
图8是图3中上车架关节第二排齿部份的放大示意图。
图9是本实用新型展开时车架间夹角的侧视示意图。
图10是本实用新型连动齿轮单元的第二种实施例的立体图。
图11是本实用新型连动齿轮单元的第三种实施例的立体图。
图12是本实用新型连动齿轮单元的第三种实施例的另一侧立体图。
图13a～13d是本实用新型第一、第二齿单元的各种态样示意图。
图14a～14b是本实用新型第一、第二齿单元的另二种态样示意图。
图中标号说明如下：
1下车架                  10下车架关节              11前轮
12、22、32缺口            13、23开口                 14、24排齿
140、240轴心             141、142、243、244齿
2上车架                  20上车架关节              21把手
3后轮车架                30后轮车架关节             31后轮
33螺件                   4、4’、4”连动齿轮单元
41、42、43、44、45、46花齿
40销                     47基座                    471凹口
5控制机构                6扳扣
100折叠关节机构          P1、P2、P3、P4端点
L1、L2、L3、L4虚拟线      θ1、θ2、θ3、θ4夹角
N1、N2、N3、N4齿数       d1、d2、d3方向
具体实施方式
请同时参阅图1～6，本实用新型包含：一下车架1；一上车架2；一后轮架3；及至少一折叠关节机构100；其中，
该下车架1，底端至少具有一前轮11，上端设有一下车架关节10，该下车架关节10外侧周缘下端具有一缺口2，内侧上端则具有一第一开口13，该第一开口13的边缘(上缘)具有一第一排齿14；
该上车架2，上端具有一把手21，底端设有一上车架关节20，该上车架关节20外侧周缘下端具有一缺口22，内侧上端具有一第二开口23，该第二开口23的边缘(底缘)具有一第二排齿24；
该后轮车架3，底端至少具有一后轮31，上端至少具有一后轮车架关节30，该后轮车架关节30外侧周缘下端具有一缺口32；
该至少一折叠关节机构100，设于该下车架1、上车架2与后轮车架3之间，包含上述的下车架关节10、上车架关节20、后轮车架关节30及一连动齿轮单元4，该连动齿轮单元4设于该下车架关节10与该上车架关节20之间，具有彼此分离的第一及第二花齿41、42，该第一及第二花齿41、42以一销40轴设于该后轮车架关节30的一侧，而可同轴转动，该花齿41被定位以啮接该下车架关节的第一排齿14，该第二花齿42则被定位以啮接该上车架关节的第二排齿24；其中，该第一花齿41、42的齿数N1、N2皆大于等于6，且皆为正整数，例如，在本实施例中，该第一花齿41的齿数N1可为7齿，第二花齿42的齿数N2可为6齿。
上述该至少一折叠关节机构100，包括左侧及右侧折叠关节机构，该左侧及右侧折叠关节机构具有相同的构造，其一为另一的镜像，故下文的说明虽是以单数(边)叙述，但仍将适用于左侧及右侧两者。
上述的下车架关节10、上车架关节20与后轮车架关节30是由一固定螺件33螺接组合锁固，使下车架关节10位于上车架关节20与后轮车架关节30的中间，且其缺口12、22、32也并列在同一直在线，而第一、第二排齿14、24与连动齿轮单元4则相互啮接构成一齿轮组。
上述该至少一折叠关节机构100位于后轮车架关节30前、后端分别设有一控制机构5及一扳扣6，当婴儿推车车架展开时，可由该控制机构5形成第一道卡掣锁定，再由该扳扣6形成第二道安全锁，避免无故收车。
请继续参阅图7、8，上述该下车架关节的第一排齿14分别具有第一轴心140、一第一齿141及一第二齿142，该第二齿42与第一齿141相邻，该第一齿141具有一第一端点P1，该第一端点P1与该第一轴心140联机形成一第一虚拟线L1，该第二齿142具有一第二端点P2，该第二端点P2与该第一轴心140联机形成一第二虚拟线L2，该第二虚拟线L2与与该第一虚拟线L1形成一第一夹角θ1；该第二排齿24分别具有一第二轴心240、一第三齿243及第四齿244，该第四齿244与第二齿243相邻，该第三齿243具有一第三端点P3，该第三端点P3与第二轴心240联机形成一第三虚拟线L3，该第四齿244具有一第四端点P4，该第四端点P4与该第二轴心240联机形成一第四虚拟线L4，该第三虚拟线L3与第四虚拟线L4形成一第二夹角θ2。
当推车车架完全展开时，如图1、9所示，该上车架2朝一第一方向d1往外延伸，该下车架1朝一第二方向d2往外延伸，该后轮车架3朝一第三方向d3往外延伸，该第二方向d2与该第三方向d3具有一第三夹角θ3，该第三方向d3与该第一方向d1具有一第四夹角θ4。
依据上述构造，本实用新型该至少一折叠关节机构100齿轮的设计，必须满足以下关系式：
360/θ1＝N3，θ1>0；
360/θ2＝N4，θ2>0；
(N2/N4)*(N3/N1)＝θ4/θ3；其中，
N3为第一排齿14的齿数，N4为第二排齿24的齿数，该第一及第二花齿41、42的齿数N1、N2是皆为正整数，该第一及第二排齿14、24的齿数N3、N4中至少一个不为正整数。该第三夹角θ3及第四夹角θ4的角度是介于30～150度之间，且二者相加总和是介于120～240度之间，当此两夹角总和介于此范围内时，推车完全展开时的角度较为稳固。
进一步举例说明，当设计条件为θ3＝80度，θ4＝100度时，取N1＝7,N2＝6，N3＝30，此时由上述的关系式，可得N4＝20.57，其中N4为不完全齿；又另一例，当设计条件为θ3＝80度，θ4＝100时，取N1＝10，N2＝8，N3＝40.87，此时由上述关系式可得N4＝26.16，其中N3、N4皆为不完全齿，又另一例，当设计条件为θ3＝85度，θ4＝95度时，取N1＝11，N2＝7，N4＝25，此时由上述的关系式可得N3＝43.9，其中N3为不完全齿。因此，随着本实用新型的设计在产品设计上，将大幅度增加了自由度及弹性。
再请参阅图10所示，是上述连动齿轮单元的第二种实施例，本实施例的该连动齿轮单元4’，是由第一及第二花齿43、44构成，并以一销40安装而可同轴转动，该第一及第二花齿43、44可由焊接或其他方式而被固定连接在一起，如一单元般一起旋转于该销40上，其中，该第一花齿43齿数为7齿，第二花齿44齿数为6齿，以达到与上述第一实施例相同的功效。
再请同时参阅图11、12所示，是上述连动齿轮单元的第三种实施例，该连动齿轮单元4”是包括：一第一及第二花齿45、46，一位于该第一及第二花齿45、46中间的基座47及一可供该第一及第二花齿45、46与基座47穿 设安装的销40；其中，该基座47的直径较第一及第二花齿45、46大，且其上并具有一凹口471，可供安装辨识之用，由此达到与上述第一实施例相同的功效。
再请参阅图13a～13d及图14a、14b，是本实用新型上述第一及第二排齿中第一齿与第二齿的各种态样设计，该等态样的举例旨在阐述本实用新型中的第一齿与第二齿，在此相邻两齿的概念可以相邻的第一齿单元与第二齿单元来表示，只要是在相邻两齿单元中具有重复的代表性端点P与虚拟线L，以图13a为例，图中的第一齿单元包含一大一小两个齿、第二齿单元与第一齿单元为重复的周期性设计，在此，齿单元的夹角θ是自该第一齿单元与第二齿单元的重复点起算，也就是以有效接触的周期单元等条件下皆可成立。

Claims (19)

  1. 一种推车，其特征在于，该推车包含：
    一上车架；
    一下车架；
    一后轮车架；及
    至少一折叠关节机构，设于该上车架、该下车架与该后轮车架之间，包含：
    一下车架关节，连接该下车架的一端，该下车架关节具有第一开口，该第一开口的边缘具有第一排齿；
    一上车架关节，连接该上车架的一端，该上车架关节具有第二开口，该第二开口的边缘具有第二排齿；
    一后轮车架关节，连接该后轮车架的一端；及
    一连动齿轮单元，设于该下车架关节与该上车架关节之间，该连动齿轮单元具有第一花齿及第二花齿，该第一花齿与该第二花齿为同轴转动，且该第一花齿与该第一排齿啮接，该第二花齿与该第二排齿啮接，其中，该第一花齿具有齿数N1，该第二花齿具有齿数N2，N1与N2大于等于6。
  2. 根据权利要求1所述的推车，其特征在于：该推车是三轮或三轮以上的婴儿推车、高尔夫球袋推车。
  3. 根据权利要求1所述的推车，其特征在于：该第一排齿具有第一轴心、第一齿及第二齿，该第二齿与该第一齿相邻，该第一齿具有第一端点，该第一端点与该第一轴心联机形成第一虚拟线，该第二齿具有第二端点，该第二端点与该第一轴心联机形成第二虚拟线，该第二虚拟线与第一虚拟线形成第一夹角θ1；该第二排齿中具有第二轴心、第三齿及第四齿，该第四齿与该第三齿相邻，该第三齿具有第三端点，该第三端点与该第二轴心联机形成第三虚拟线，该第四齿具有第四端点，该第四端点与该第二轴心联机形成第四虚拟线，该第三虚拟线与第四虚拟线形成第二夹角θ2，该第一及第二排齿具有齿数N3、N4；该上车架朝第一方向往外延伸，该下车架朝第二方向往外延伸，该后轮车架朝第三方向往外延伸，该第二方向与该第三方向具有第三夹角θ3， 该第三方向与该第一方向具有第四夹角θ4，且N1、N2、θ1、θ2满足以下关系式：
    360/θ1＝N3，θ1>0；
    360/θ2＝N4，θ2>0；
    (N2/N4)*(N3/N1)＝θ4/θ3，θ3、θ4介于30～150度之间。
  4. 根据权利要求3所述的推车，其特征在于：该第一及第二花齿的齿数N1、N2为正整数。
  5. 根据权利要求3所述的推车，其特征在于：该第一及第二排齿的齿数N3、N4中至少一个不为正整数。
  6. 根据权利要求3所述的推车，其特征在于：第三夹角θ3与第四夹角θ4角度相加总和介于120度～240度之间。
  7. 根据权利要求1所述的推车，其特征在于：该第一花齿与该第二花齿彼此分离。
  8. 根据权利要求1所述的推车，其特征在于：该第一花齿与该第二花齿，为固定连接。
  9. 根据权利要求1所述的推车，其特征在于：该连动齿轮单元更包含一基座，该基座位于该第一齿及该第二花齿之间，且该基座的直径大于该第一花齿的直径。
  10. 根据权利要求8所述的推车，其特征在于：该基座具有一凹口。
  11. 一种推车，该推车包含：
    一上车架，该上车架朝第一方向往外延伸；
    一下车架，该下车架朝第二方向往外延伸；
    一后轮车架，该后轮车架朝第三方向往外延伸；
    至少一折叠关节机构，设于该上车架、该下车架与该后轮车架之间，包含：
    一下车架关节，连接该下车架的一端，该下车架关节具有第一开口，该第一开口的边缘具有第一排齿；
    一上车架关节，连接该上车架的一端，该上车架关节具有第二开口，该第二开口的边缘具有第二排齿；
    一后轮车架关节，连接该后轮车架的一端；及
    一连动齿轮单元，设于该下车架关节与该上车架关节之间，该连动齿轮单元具有第一花齿及第二花齿，该第一花齿与该第二花齿为同轴转动，该第一花齿与该第一排齿啮接，该第二花齿与该第二排齿啮接，该第一花齿具有齿数N1，该第二花齿具有齿数N2，该第一排齿具有第一轴心、第一齿及第二齿，该第二齿与该第一齿相邻，该第一齿具有第一端点，该第一端点与该第一轴心联机形成第一虚拟线，该第二齿具有第二端点，该第二端点与该第一轴心联机形成第二虚拟线，该第二虚拟线与第一虚拟线形成第一夹角θ1；该第二排齿中具有第二轴心、第三齿及第四齿，该第四齿与该第三齿相邻，该第三齿具有第三端点，该第三端点与该第二轴心联机形成第三虚拟线，且该第四齿具有第四端点，该第四端点与该第二轴心联机形成第四虚拟线，该第三虚拟线与第四虚拟线形成第二夹角θ2，该第一及第二排齿具有齿数N3、N4；该上车架朝第一方向往外延伸，该下车架朝第二方向往外延伸，该后轮车架朝第三方向往外延伸，该第二方向与该第三方向具有第三夹角θ3，该第三方向与该第一方向具有一第四夹角θ4；其中，N1、N2、θ1、θ2满足以下关系式:
    360/θ1＝N3，θ1>0；
    360/θ2＝N4，θ2>0；
    (N2/N4)*(N3/N1)＝θ4/θ3，θ3、θ4介于30～150度之间；
    且N3与N4中至少一个不为正整数，N1、N2为正整数，θ3、θ4介于30～150度之间。
  12. 根据权利要求10所述的推车，其特征在于：该推车尤指是三轮或三轮以上的婴儿推车、高尔夫球袋推车。
  13. 根据权利要求11所述的推车，其特征在于：该第一及第二花齿的齿数N1、N2大于等于6。
  14. 根据权利要求11所述的推车，其特征在于：该第一方向，该第二方向与该第三方向彼此不同。
  15. 根据权利要求11所述的推车，其特征在于：第三夹角角度与第四夹角角度相加总和介于120度～240度之间。
  16. 根据权利要求11所述的推车，其特征在于：该第一花齿与该第二花齿可各别分开独立。
  17. 根据权利要求11所述的推车，其特征在于：该第一花齿与该第二花齿可被固定连接在一起。
  18. 根据权利要求11所述的推车，其特征在于：该连动齿轮单元还包含一基座，该基座位于该第一花齿及该第二花齿之间，且该基座的直径大于该第一花齿的直径。
  19. 根据权利要求18所述的推车，其特征在于：该基座具有一凹口。
PCT/CN2017/096830 2017-05-22 2017-08-10 推车 WO2018214292A1 (zh)

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