WO2018214983A1 - Transmission output mechanism, gear box and assembly method of transmission output mechanism - Google Patents

Transmission output mechanism, gear box and assembly method of transmission output mechanism Download PDF

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Publication number
WO2018214983A1
WO2018214983A1 PCT/CN2018/093752 CN2018093752W WO2018214983A1 WO 2018214983 A1 WO2018214983 A1 WO 2018214983A1 CN 2018093752 W CN2018093752 W CN 2018093752W WO 2018214983 A1 WO2018214983 A1 WO 2018214983A1
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WO
WIPO (PCT)
Prior art keywords
shaft body
output
section
hole
output frame
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PCT/CN2018/093752
Other languages
French (fr)
Chinese (zh)
Inventor
李平
南奋勇
李蒙
Original Assignee
深圳市兆威机电股份有限公司
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Publication of WO2018214983A1 publication Critical patent/WO2018214983A1/en

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Classifications

    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • F16H2057/0235—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly specially adapted to allow easy accessibility and repair

Definitions

  • the present invention relates to mechanical transmissions, and more particularly to a method of assembling a transmission output mechanism, a gearbox, and a transmission output mechanism.
  • Planetary gear reducers have the advantages of large reduction ratio, stable transmission, low noise and small volume, and are widely used in automotive parts, smart homes, precision instruments and other fields.
  • a planetary gear reducer converts a high-speed, small-torque motion of a motor into a low-speed, high-torque rotation by a one-stage or multi-stage planetary gear mechanism.
  • the output of the planetary gear reducer is connected to the load to drive the load transmission, which withstands the maximum torque on the gear unit and requires high strength and rigidity.
  • the output end of the prior art planetary gear reducer is divided into two forms of shaft output and hole output.
  • the hole output is mostly in the form of a spline hole, and the driven load is inserted into the spline hole in the form of a spline shaft.
  • This connection mode has the advantage of convenient installation, but there is no axial limit between the spline shaft and the hole.
  • the shaft is axially displaced and the shaft is easily removed from the hole.
  • the shaft output method adopts a D-shaped shaft and a key connection, etc., in order to prevent the shaft from coming out of the gear box and the output frame is integrally formed. Due to the partial accumulation of the part connected to the shaft and the output frame, the density of the processing is not uniform and the strength is poor. Especially in the powder metallurgy forming process, the strength of the root of the output shaft is the most important factor affecting the strength.
  • the present invention provides a method of assembling a transmission output mechanism, a gearbox, and a transmission output mechanism.
  • the present invention provides a transmission output mechanism including a shaft body and an output frame fixed to the shaft body, the shaft body includes an output section, an intermediate section and an input section, and the output frame is provided with a pass The through hole of the output frame is in an interference fit with the input section of the shaft body.
  • the side surface of the through hole is provided with a circular arc-shaped convex tooth, and the small diameter of the convex tooth is smaller than the diameter of the input section.
  • a side of the input section adjacent to the output section is provided with a first guiding slope, and an aperture of the through hole of the output frame is provided with the first guiding slope The second guiding bevel of the fit.
  • the shaft body is stepped, the output section is the same diameter as the middle section, the diameter of the output section is smaller than the diameter of the input section, and the output section is A D-shaped section, the intermediate section is provided with an annular groove, and the intermediate section and the input section are all cylindrical.
  • the surface hardness of the output frame is greater than the surface hardness of the shaft body.
  • the output frame is in the shape of a disk, the axis of the through hole coincides with the center of the output frame, and the output frame is provided with a positioning edge, and the positioning edge is Positioning the notch, the output frame is provided with a planetary shaft.
  • the present invention also provides a gearbox comprising the transmission output mechanism of any of the above.
  • an inner tooth housing and an end cover are provided, the inner tooth housing is provided with a bearing, the shaft body is disposed on the bearing, and the output frame is disposed on the inner tooth housing
  • the end cover is connected to a motor, the motor is connected to a motor gear, the motor gear is connected with a planetary gear, and the planetary gear is connected to the output frame.
  • the present invention also provides a method for assembling a transmission output mechanism, the output section of the shaft body is passed through the through hole of the output frame, and the first guiding slope of the input section of the shaft body and the through hole of the output frame
  • the second guiding bevel is in contact with the crucible, and the input section of the shaft body is forcibly pressed into the through hole by applying axial pressure to the shaft body, so that the surface hardness of the output frame is greater than the surface hardness of the shaft body, and the convex teeth in the through hole are pressed.
  • the shaft body presses the groove on the shaft body, and simultaneously presses the material of the groove to one end to form a protrusion. When the end surface of the shaft body is flush with the end surface of the output frame, the assembly is completed.
  • the beneficial effects of the present invention are: By the above scheme, the structure of the traditional spline hole is avoided, the complicated processing technology and the precision processing equipment are not required, and the manufacturing difficulty of the output shaft of the micro gear box is significantly reduced, and the utility model is particularly suitable for the miniature planet.
  • the output of the gear reducer has the advantages of simple structure, reliable connection and convenient processing.
  • FIG. 1 is a schematic view of a shaft body of a transmission output mechanism of the present invention.
  • FIG. 2 is a schematic view of an output frame of a transmission output mechanism of the present invention.
  • FIG. 3 is a front elevational view of a transmission output mechanism of the present invention.
  • FIG. 4 is a cross-sectional view G-G of FIG. 3.
  • FIG. 5 is a partial enlarged view A of FIG. 4.
  • FIG. 6 is a schematic view of a method of assembling a transmission output mechanism of the present invention.
  • FIG. 7 is a schematic view showing the assembly of a method for assembling a transmission output mechanism according to the present invention.
  • FIG. 8 is a schematic cross-sectional view of a gear case of the present invention.
  • a transmission output mechanism includes a shaft body 9 and an output frame 10 fixed to the shaft body 9, the shaft body 9 including an output section 901, an intermediate section 902, and
  • the input section 903 is provided with a through hole 5, and the through hole 5 of the output frame 10 and the input section 903 of the shaft body 9 are in an interference fit.
  • the whole body of the shaft body 9 is a stepped shaft, and the output section 901 is provided with a joint position on the side, the cross section is a D-shaped section 1, and the diameter is slightly smaller; the middle section 902 has a cylindrical shape and a diameter. Same as output segment 901; input segment 9
  • the third section 903 is cylindrical and has a diameter slightly larger than the output section 901.
  • the intermediate section 902 is provided with an annular groove 2.
  • the input section 903 is adjacent to the output section 901 - the side is provided with a first guiding ramp 11 .
  • the output frame 10 has a disk shape, and the output frame 10 has a through hole 5 in the middle thereof, and the through hole 5 has a large number of arc-shaped convex teeth 7.
  • the small diameter of the convex tooth 7 is slightly smaller than the diameter of the input section 903 of the shaft body 9, and the large diameter of the convex tooth 7 is slightly larger than the diameter of the input section 903 of the shaft body 9.
  • the through hole 5 - side is provided with a second guiding slope 12 .
  • the material of the shaft body 9 and the output frame 10 has a certain difference, wherein the surface hardness of the shaft body 9 material is soft, and the input is soft.
  • the surface of the material of the shelf 10 is hard.
  • a gearbox includes the transmission output mechanism and the inner gear case 15 and the end cover 17 according to any one of the above, wherein the inner tooth housing 15 is provided with a bearing 20, The shaft body 9 is disposed on the bearing 20, the output frame 10 is disposed in the inner gear housing 15, the end cover 17 is connected with a motor 18, and the motor 18 is connected with a motor gear 19, A planetary gear 16 is coupled to the motor gear 19, and the planetary gear 16 is coupled to the output frame 10.
  • FIG. 6 to FIG. 7 a method for assembling a transmission output mechanism is assembled, and an output section 901 of the shaft body 9 is passed out from the through hole 5 of the output frame 10, when the shaft body 9 is The first guide slope 11 is in contact with the second guide slope 12 of the through hole 5, and the shaft body 9 is forcibly pressed into the through hole 5 by applying axial pressure to the shaft body 9. Since the surface of the through hole 5 is hard, the shaft 9 is pressed out of the groove 3 by the convex teeth 7 of the through hole 5, and the material of the same groove 3 is pressed to the side of the shaft body 9 near the input section 903 to form a projection. 4. As shown in Fig. 7, when the shaft end face 13 is flush with the output frame end face 14, the press-in is completed.
  • the shaft body 9 and the output frame 10 are combined by pressure, the shaft body 9 is pierced from the output hole of the inner tooth housing 15 of the gear box, and then the snap ring 21 is installed in the annular groove 2 of the shaft body 9, and finally Install other parts in the inner housing 15 of the gearbox.
  • the invention provides a method for assembling a transmission output mechanism, a gear box and a transmission output mechanism, which is formed by integrating the interference between the shaft body 9 and the through hole 5, and the material is soft and hard.
  • the utility model has the advantages of few parts and simple structure; the press-in depth is defined by the axial end face 13 by the axial pressure pressing, the assembly equipment is simple and the operation is convenient; after the shaft body 9 is combined with the output frame 10, the plurality of convex teeth 7 and the groove are connected. The rotation can be reliably transmitted, the axial direction is connected by a large number of protrusions 4, and the same is provided with the snap ring 21, which can effectively prevent the shaft body 9 from falling into the gear box and coming out of the gear box.
  • the first guiding inclined surface 11 and the second guiding inclined surface 12 are easy to process, and the protrusions 4 of the shaft body 9 after pressing are naturally formed during the pressing process, and the complicated processing technology and precision processing equipment are not required, and the miniature is remarkably reduced.
  • the shaft body 9 is made of 3G13 material, the surface hardness is HRV300, the output frame 10 is injection molded by NiFe04 iron-nickel alloy powder, and the interference of the shaft 9 and the convex teeth 7 of the through hole 5 is performed.
  • the output shaft can transmit 170gcm of rotational torque.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Retarders (AREA)
  • Gears, Cams (AREA)
  • General Details Of Gearings (AREA)

Abstract

Disclosed is a transmission output mechanism, comprising a shaft body (9) and an output stand (10) fixed on the shaft body (9), wherein the shaft body (9) comprises an output section (901), a middle section (902) and an input section (903), the output stand (10) is provided with a through hole (5), and the through hole (5) of the output stand (10) and the input section (903) of the shaft body (9) are in an interference fit. Further disclosed are a gear box comprising the transmission output mechanism and an assembly method of the transmission output mechanism. The transmission output mechanism and the assembly method thereof avoid the structure of a traditional splined hole and do not need sophisticated processing technology and precision processing equipment, which significantly reduces the difficulty in manufacturing an output shaft of a micro gear box, and is especially suitable for output of a speed reducer of a micro planetary gear, and has the advantages of having a simple structure, reliable connection and convenient processing.

Description

一种传动输出机构、 齿轮箱和传动输出机构的组装方法 技术领域  Method for assembling transmission output mechanism, gear box and transmission output mechanism
[0001] 本发明涉及机械传动， 尤其涉及一种传动输出机构、 齿轮箱和传动输出机构的 组装方法。  [0001] The present invention relates to mechanical transmissions, and more particularly to a method of assembling a transmission output mechanism, a gearbox, and a transmission output mechanism.
背景技术  Background technique
[0002] 行星齿轮减速器具有减速比大、 传动平稳、 噪音小和体积小等优点， 在汽车零 部件、 智能家居、 精密仪器等领域具有广泛应用。  [0002] Planetary gear reducers have the advantages of large reduction ratio, stable transmission, low noise and small volume, and are widely used in automotive parts, smart homes, precision instruments and other fields.
[0003] 行星齿轮减速器通过一级或多级行星齿轮机构将马达的高速小扭矩运动转化为 低速大扭矩的转动。 行星齿轮减速器的输出端与负载相连， 驱动负载传动， 其 承受减速器上最大的扭矩， 要求具有较高的强度和刚性。  [0003] A planetary gear reducer converts a high-speed, small-torque motion of a motor into a low-speed, high-torque rotation by a one-stage or multi-stage planetary gear mechanism. The output of the planetary gear reducer is connected to the load to drive the load transmission, which withstands the maximum torque on the gear unit and requires high strength and rigidity.
[0004] 现有技术的行星齿轮减速器的输出端分为轴输出和孔输出两种形式。 孔输出多 采用花键孔的方式， 被驱动的负载以花键轴的形式插入花键孔中， 此连接方式 具有安装方便的优点， 但花键轴与孔之间没有轴向限位， 当轴受到轴向力吋轴 易从孔中脱出。 轴输出的方式多采用 D形轴、 键连接等结构， 为防止轴从齿轮箱 脱出轴与输出架采用一体成型。 由于轴与输出架连接的部分局部堆料， 成型法 加工吋密度不均匀， 强度较差， 特别是粉末冶金成型工艺吋， 输出轴根部的强 度是影响强度的最重要因素。  [0004] The output end of the prior art planetary gear reducer is divided into two forms of shaft output and hole output. The hole output is mostly in the form of a spline hole, and the driven load is inserted into the spline hole in the form of a spline shaft. This connection mode has the advantage of convenient installation, but there is no axial limit between the spline shaft and the hole. The shaft is axially displaced and the shaft is easily removed from the hole. The shaft output method adopts a D-shaped shaft and a key connection, etc., in order to prevent the shaft from coming out of the gear box and the output frame is integrally formed. Due to the partial accumulation of the part connected to the shaft and the output frame, the density of the processing is not uniform and the strength is poor. Especially in the powder metallurgy forming process, the strength of the root of the output shaft is the most important factor affecting the strength.
[0005] 中国专利 201620128426.X 《微型齿轮箱及其输出轴》 分幵了一种组合式的输出 轴， 但对于 ΦΙΟιηιη以下微型行星齿轮减速器， 由于体积小， 厚度薄， 台阶轴加 工困难且无法设置台阶孔。  [0005] Chinese patent 201620128426.X "Micro gear box and its output shaft" is divided into a combined output shaft, but for the miniature planetary gear reducer below Φ ΙΟιηιη, due to the small size, thin thickness, the step shaft is difficult to process Unable to set the step hole.
技术问题 technical problem
问题的解决方案  Problem solution
技术解决方案  Technical solution
[0006] 为了解决现有技术中的问题， 本发明提供了一种传动输出机构、 齿轮箱和传动 输出机构的组装方法。 [0007] 本发明提供了一种传动输出机构， 包括轴体和固定在所述轴体上的输出架， 所 述轴体包括输出段、 中间段和输入段， 所述输出架上设有通孔， 所述输出架的 通孔与所述轴体的输入段为过盈配合。 In order to solve the problems in the prior art, the present invention provides a method of assembling a transmission output mechanism, a gearbox, and a transmission output mechanism. [0007] The present invention provides a transmission output mechanism including a shaft body and an output frame fixed to the shaft body, the shaft body includes an output section, an intermediate section and an input section, and the output frame is provided with a pass The through hole of the output frame is in an interference fit with the input section of the shaft body.
[0008] 作为本发明的进一步改进， 所述通孔的侧面设有圆弧形的凸齿， 所述凸齿的小 径小于所述输入段的直径。  As a further improvement of the present invention, the side surface of the through hole is provided with a circular arc-shaped convex tooth, and the small diameter of the convex tooth is smaller than the diameter of the input section.
[0009] 作为本发明的进一步改进， 所述输入段靠近所述输出段的一侧设有第一导向斜 面， 所述输出架的通孔的孔口处设有与所述第一导向斜面相配合的第二导向斜 面。 [0009] As a further improvement of the present invention, a side of the input section adjacent to the output section is provided with a first guiding slope, and an aperture of the through hole of the output frame is provided with the first guiding slope The second guiding bevel of the fit.
[0010] 作为本发明的进一步改进， 所述轴体呈台阶状， 所述输出段与所述中间段的直 径相同， 所述输出段的直径小于所述输入段的直径， 所述输出段为 D型截面， 所 述中间段设有环形槽， 所述中间段、 输入段均为圆柱形。  [0010] As a further improvement of the present invention, the shaft body is stepped, the output section is the same diameter as the middle section, the diameter of the output section is smaller than the diameter of the input section, and the output section is A D-shaped section, the intermediate section is provided with an annular groove, and the intermediate section and the input section are all cylindrical.
[0011] 作为本发明的进一步改进， 所述输出架的表面硬度大于所述轴体的表面硬度。 [0011] As a further improvement of the present invention, the surface hardness of the output frame is greater than the surface hardness of the shaft body.
[0012] 作为本发明的进一步改进， 所述输出架为圆盘形， 所述通孔的轴线与所述输出 架的圆心相重合， 所述输出架上设有定位边， 所述定位边为定位缺口， 所述输 出架上设有行星轴。 [0012] As a further improvement of the present invention, the output frame is in the shape of a disk, the axis of the through hole coincides with the center of the output frame, and the output frame is provided with a positioning edge, and the positioning edge is Positioning the notch, the output frame is provided with a planetary shaft.
[0013] 本发明还提供了一种齿轮箱， 包括如上述中任一项所述的传动输出机构。  [0013] The present invention also provides a gearbox comprising the transmission output mechanism of any of the above.
[0014] 作为本发明的进一步改进， 包括内齿壳和端盖， 所述内齿壳上设有轴承， 所述 轴体设置在所述轴承上， 所述输出架设置在所述内齿壳内， 所述端盖连接有马 达， 所述马达连接有马达齿轮， 所述马达齿轮连接有行星齿轮， 所述行星齿轮 与所述输出架连接。 [0014] As a further improvement of the present invention, an inner tooth housing and an end cover are provided, the inner tooth housing is provided with a bearing, the shaft body is disposed on the bearing, and the output frame is disposed on the inner tooth housing The end cover is connected to a motor, the motor is connected to a motor gear, the motor gear is connected with a planetary gear, and the planetary gear is connected to the output frame.
[0015] 本发明还提供了一种传动输出机构的组装方法， 将轴体的输出段从输出架的通 孔穿过， 当轴体的输入段的第一导向斜面与输出架的通孔的第二导向斜面相接 触吋， 通过向轴体施加轴向压力， 将轴体的输入段强制压入通孔中， 使输出架 的表面硬度大于轴体的表面硬度， 通孔内的凸齿压迫轴体， 在轴体上压出凹槽 ， 并同吋将凹槽的材料挤压到一端形成凸起， 当轴体端面与输出架端面平齐吋 ， 组装完成。  [0015] The present invention also provides a method for assembling a transmission output mechanism, the output section of the shaft body is passed through the through hole of the output frame, and the first guiding slope of the input section of the shaft body and the through hole of the output frame The second guiding bevel is in contact with the crucible, and the input section of the shaft body is forcibly pressed into the through hole by applying axial pressure to the shaft body, so that the surface hardness of the output frame is greater than the surface hardness of the shaft body, and the convex teeth in the through hole are pressed. The shaft body presses the groove on the shaft body, and simultaneously presses the material of the groove to one end to form a protrusion. When the end surface of the shaft body is flush with the end surface of the output frame, the assembly is completed.
发明的有益效果  Advantageous effects of the invention
有益效果 [0016] 本发明的有益效果是： 通过上述方案， 避免了传统花键孔的结构， 不需要复杂 的加工工艺和精密加工设备， 显著降低微型齿轮箱输出轴的制造难度， 特别适 用于微型行星齿轮减速器的输出， 具有结构简单、 连接可靠、 加工方便的优点 对附图的简要说明 Beneficial effect [0016] The beneficial effects of the present invention are: By the above scheme, the structure of the traditional spline hole is avoided, the complicated processing technology and the precision processing equipment are not required, and the manufacturing difficulty of the output shaft of the micro gear box is significantly reduced, and the utility model is particularly suitable for the miniature planet. The output of the gear reducer has the advantages of simple structure, reliable connection and convenient processing.
附图说明  DRAWINGS
[0017] 图 1是本发明一种传动输出机构的轴体的示意图。  1 is a schematic view of a shaft body of a transmission output mechanism of the present invention.
[0018] 图 2是本发明一种传动输出机构的输出架的示意图。 2 is a schematic view of an output frame of a transmission output mechanism of the present invention.
[0019] 图 3是本发明一种传动输出机构的主视图。 3 is a front elevational view of a transmission output mechanism of the present invention.
[0020] 图 4是图 3的剖面图 G-G。 4 is a cross-sectional view G-G of FIG. 3.
[0021] 图 5是图 4的局部放大图 A。 [0021] FIG. 5 is a partial enlarged view A of FIG. 4.
[0022] 图 6是本发明一种传动输出机构的组装方法的示意图。  6 is a schematic view of a method of assembling a transmission output mechanism of the present invention.
[0023] 图 7是本发明一种传动输出机构的组装方法的组装完成示意图。  7 is a schematic view showing the assembly of a method for assembling a transmission output mechanism according to the present invention.
[0024] 图 8是本发明一种齿轮箱的剖面示意图。  8 is a schematic cross-sectional view of a gear case of the present invention.
本发明的实施方式 Embodiments of the invention
[0025] 下面结合附图说明及具体实施方式对本发明作进一步说明。 [0025] The present invention will be further described with reference to the accompanying drawings and specific embodiments.
[0026] 如图 1至图 5所示， 一种传动输出机构， 包括轴体 9和固定在所述轴体 9上的输出 架 10， 所述轴体 9包括输出段 901、 中间段 902和输入段 903， 所述输出架 10上设 有通孔 5， 所述输出架 10的通孔 5与所述轴体 9的输入段 903为过盈配合。 1 to 5, a transmission output mechanism includes a shaft body 9 and an output frame 10 fixed to the shaft body 9, the shaft body 9 including an output section 901, an intermediate section 902, and The input section 903 is provided with a through hole 5, and the through hole 5 of the output frame 10 and the input section 903 of the shaft body 9 are in an interference fit.
[0027] 如图 1至图 5所示， 轴体 9的整体呈台阶轴， 输出段 901—侧设置有连接位， 截面 为 D形截面 1， 直径略小； 中间段 902呈圆柱形， 直径与输出段 901相同； 输入段 9[0027] As shown in FIG. 1 to FIG. 5, the whole body of the shaft body 9 is a stepped shaft, and the output section 901 is provided with a joint position on the side, the cross section is a D-shaped section 1, and the diameter is slightly smaller; the middle section 902 has a cylindrical shape and a diameter. Same as output segment 901; input segment 9
03呈圆柱形， 直径略大于输出段 901。 中间段 902设置环形槽 2。 输入段 903靠近 输出段 901—侧设置有第一导向斜面 11。 03 is cylindrical and has a diameter slightly larger than the output section 901. The intermediate section 902 is provided with an annular groove 2. The input section 903 is adjacent to the output section 901 - the side is provided with a first guiding ramp 11 .
[0028] 输出架 10呈圆盘形， 输出架 10中部有通孔 5， 通孔 5具有大量圆弧形的凸齿 7。 [0028] The output frame 10 has a disk shape, and the output frame 10 has a through hole 5 in the middle thereof, and the through hole 5 has a large number of arc-shaped convex teeth 7.
凸齿 7的小径略小于轴体 9的输入段 903的直径， 凸齿 7的大径略大于轴体 9的输入 段 903的直径。 通孔 5—侧设置有第二导向斜面 12。  The small diameter of the convex tooth 7 is slightly smaller than the diameter of the input section 903 of the shaft body 9, and the large diameter of the convex tooth 7 is slightly larger than the diameter of the input section 903 of the shaft body 9. The through hole 5 - side is provided with a second guiding slope 12 .
[0029] 轴体 9和输出架 10的材质具有一定差异， 其中， 轴体 9材质的表面硬度较软， 输 出架 10材质的表面硬度较硬。 [0029] The material of the shaft body 9 and the output frame 10 has a certain difference, wherein the surface hardness of the shaft body 9 material is soft, and the input is soft. The surface of the material of the shelf 10 is hard.
[0030] 如图 8所示， 一种齿轮箱， 包括如上述中任一项所述的传动输出机构和内齿壳 1 5、 端盖 17， 所述内齿壳 15上设有轴承 20， 所述轴体 9设置在所述轴承 20上， 所 述输出架 10设置在所述内齿壳 15内， 所述端盖 17连接有马达 18， 所述马达 18连 接有马达齿轮 19， 所述马达齿轮 19连接有行星齿轮 16， 所述行星齿轮 16与所述 输出架 10连接。 [0030] As shown in FIG. 8, a gearbox includes the transmission output mechanism and the inner gear case 15 and the end cover 17 according to any one of the above, wherein the inner tooth housing 15 is provided with a bearing 20, The shaft body 9 is disposed on the bearing 20, the output frame 10 is disposed in the inner gear housing 15, the end cover 17 is connected with a motor 18, and the motor 18 is connected with a motor gear 19, A planetary gear 16 is coupled to the motor gear 19, and the planetary gear 16 is coupled to the output frame 10.
[0031] 如图 6至图 7所示， 一种传动输出机构的组装方法， 组装吋， 将轴体 9的输出段 9 01从输出架 10的通孔 5中穿出， 当轴体 9的第一导向斜面 11与通孔 5的第二导向斜 面 12接触吋， 通过向轴体 9施加轴向压力， 将轴体 9强制压入通孔 5中。 由于通孔 5表面硬度较硬， 轴体 9被通孔 5的凸齿 7压出凹槽 3， 同吋凹槽 3的材料被挤压到 轴体 9靠近输入段 903—侧， 形成凸起 4。 如图 7所示， 当轴体端面 13与输出架端 面 14平齐吋， 压入完成。 [0031] As shown in FIG. 6 to FIG. 7, a method for assembling a transmission output mechanism is assembled, and an output section 901 of the shaft body 9 is passed out from the through hole 5 of the output frame 10, when the shaft body 9 is The first guide slope 11 is in contact with the second guide slope 12 of the through hole 5, and the shaft body 9 is forcibly pressed into the through hole 5 by applying axial pressure to the shaft body 9. Since the surface of the through hole 5 is hard, the shaft 9 is pressed out of the groove 3 by the convex teeth 7 of the through hole 5, and the material of the same groove 3 is pressed to the side of the shaft body 9 near the input section 903 to form a projection. 4. As shown in Fig. 7, when the shaft end face 13 is flush with the output frame end face 14, the press-in is completed.
[0032] 轴体 9与输出架 10通过压力组合后， 将轴体 9从齿轮箱的内齿壳 15输出孔中穿出 ， 然后， 在轴体 9的环形槽 2中安装卡环 21， 最后安装齿轮箱的内齿壳 15内的其 他零件。  [0032] After the shaft body 9 and the output frame 10 are combined by pressure, the shaft body 9 is pierced from the output hole of the inner tooth housing 15 of the gear box, and then the snap ring 21 is installed in the annular groove 2 of the shaft body 9, and finally Install other parts in the inner housing 15 of the gearbox.
[0033] 本发明提供的一种传动输出机构、 齿轮箱和传动输出机构的组装方法， 通过轴 体 9与通孔 5的过盈量、 材质软硬配合， 在轴向压力作用下组成为一体， 零件少 ， 结构简单； 通过轴向压力压入， 以轴体端面 13限定压入深度， 组装设备简单 ， 操作方便； 轴体 9与输出架 10组合后， 由大量凸齿 7、 凹槽连接， 可以可靠地 传递旋转， 轴向由大量凸起 4连接， 同吋设置有卡环 21， 可以有效地避免轴体 9 向齿轮箱内陷入和向齿轮箱外脱出。 第一导向斜面 11、 第二导向斜面 12加工容 易， 同吋， 轴体 9在压入后的凸起 4在压入过程中自然形成， 不需要复杂的加工 工艺和精密加工设备， 显著降低微型齿轮箱输出轴的制造难度。  [0033] The invention provides a method for assembling a transmission output mechanism, a gear box and a transmission output mechanism, which is formed by integrating the interference between the shaft body 9 and the through hole 5, and the material is soft and hard. The utility model has the advantages of few parts and simple structure; the press-in depth is defined by the axial end face 13 by the axial pressure pressing, the assembly equipment is simple and the operation is convenient; after the shaft body 9 is combined with the output frame 10, the plurality of convex teeth 7 and the groove are connected. The rotation can be reliably transmitted, the axial direction is connected by a large number of protrusions 4, and the same is provided with the snap ring 21, which can effectively prevent the shaft body 9 from falling into the gear box and coming out of the gear box. The first guiding inclined surface 11 and the second guiding inclined surface 12 are easy to process, and the protrusions 4 of the shaft body 9 after pressing are naturally formed during the pressing process, and the complicated processing technology and precision processing equipment are not required, and the miniature is remarkably reduced. The manufacturing difficulty of the gearbox output shaft.
[0034] 以D4mm微型齿轮箱为例， 轴体 9采用 3G13材质， 表面硬度 HRV300, 输出架 1 0采用 NiFe04铁镍合金粉末注塑成型， 轴体 9与通孔 5的凸齿 7的过盈量约 0.04mm ， 输出轴可传递 170gcm旋转扭矩。  [0034] Taking the D4mm micro gear box as an example, the shaft body 9 is made of 3G13 material, the surface hardness is HRV300, the output frame 10 is injection molded by NiFe04 iron-nickel alloy powder, and the interference of the shaft 9 and the convex teeth 7 of the through hole 5 is performed. About 0.04mm, the output shaft can transmit 170gcm of rotational torque.
[0035] 以上内容是结合具体的优选实施方式对本发明所作的进一步详细说明， 不能认 定本发明的具体实施只局限于这些说明。 对于本发明所属技术领域的普通技术 人员来说， 在不脱离本发明构思的前提下， 还可以做出若干简单推演或替换， 都应当视为属于本发明的保护范围。 [0035] The above is a further detailed description of the present invention in conjunction with the specific preferred embodiments, and the specific embodiments of the invention are not limited to the description. General technique for the technical field to which the present invention pertains A person skilled in the art can make some simple deductions or substitutions without departing from the spirit and scope of the invention.

Claims

权利要求书 Claim
一种传动输出机构， 其特征在于： 包括轴体和固定在所述轴体上的输 出架， 所述轴体包括输出段、 中间段和输入段， 所述输出架上设有通 孔， 所述输出架的通孔与所述轴体的输入段为过盈配合。 A transmission output mechanism, comprising: a shaft body and an output frame fixed on the shaft body, the shaft body comprises an output section, an intermediate section and an input section, and the output frame is provided with a through hole The through hole of the output frame is in an interference fit with the input section of the shaft body.
根据权利要求 1所述的传动输出机构， 其特征在于： 所述通孔的侧面 设有圆弧形的凸齿， 所述凸齿的小径小于所述输入段的直径。 The transmission output mechanism according to claim 1, wherein: a side surface of the through hole is provided with a circular arc-shaped convex tooth, and a small diameter of the convex tooth is smaller than a diameter of the input portion.
根据权利要求 1所述的传动输出机构， 其特征在于： 所述输入段靠近 所述输出段的一侧设有第一导向斜面， 所述输出架的通孔的孔口处设 有与所述第一导向斜面相配合的第二导向斜面。 The transmission output mechanism according to claim 1, wherein: a side of the input section adjacent to the output section is provided with a first guiding slope, and an opening of the through hole of the output frame is provided with The second guiding slope is matched by the first guiding slope.
根据权利要求 1所述的传动输出机构， 其特征在于： 所述轴体呈台阶 状， 所述输出段与所述中间段的直径相同， 所述输出段的直径小于所 述输入段的直径， 所述输出段为 D型截面， 所述中间段设有环形槽， 所述中间段、 输入段均为圆柱形。 The transmission output mechanism according to claim 1, wherein: the shaft body is stepped, the output section has the same diameter as the intermediate section, and the diameter of the output section is smaller than the diameter of the input section. The output section is a D-shaped cross section, and the intermediate section is provided with an annular groove, and the intermediate section and the input section are all cylindrical.
根据权利要求 1所述的传动输出机构， 其特征在于： 所述输出架的表 面硬度大于所述轴体的表面硬度。 The transmission output mechanism according to claim 1, wherein: said output frame has a surface hardness greater than a surface hardness of said shaft body.
据权利要求 1所述的传动输出机构， 其特征在于： 所述输出架为圆盘 形， 所述通孔的轴线与所述输出架的圆心相重合， 所述输出架上设有 定位边， 所述定位边为定位缺口， 所述输出架上设有行星轴。 The transmission output mechanism according to claim 1, wherein: the output frame has a disc shape, an axis of the through hole coincides with a center of the output frame, and the output frame is provided with a positioning edge. The positioning edge is a positioning notch, and the output frame is provided with a planetary shaft.
一种齿轮箱， 其特征在于： 包括如权利要求 1至 6中任一项所述的传动 输出机构。 A gearbox, characterized by comprising a transmission output mechanism according to any one of claims 1 to 6.
据权利要求 7所述的齿轮箱， 其特征在于： 包括内齿壳和端盖， 所述 内齿壳上设有轴承， 所述轴体设置在所述轴承上， 所述输出架设置在 所述内齿壳内， 所述端盖连接有马达， 所述马达连接有马达齿轮， 所 述马达齿轮连接有行星齿轮， 所述行星齿轮与所述输出架连接。 一种传动输出机构的组装方法， 其特征在于： 将轴体的输出段从输出 架的通孔穿过， 当轴体的输入段的第一导向斜面与输出架的通孔的第 二导向斜面相接触吋， 通过向轴体施加轴向压力， 将轴体的输入段强 制压入通孔中， 使输出架的表面硬度大于轴体的表面硬度， 通孔内的 凸齿压迫轴体， 在轴体上压出凹槽， 并同吋将凹槽的材料挤压到一端 形成凸起， 当轴体端面与输出架端面平齐吋， 组装完成。 A gearbox according to claim 7, comprising: an inner tooth housing and an end cap, said inner tooth housing being provided with a bearing, said shaft body being disposed on said bearing, said output frame being disposed at said In the inner tooth housing, a motor is connected to the end cover, a motor gear is connected to the motor, a planetary gear is connected to the motor gear, and the planetary gear is connected to the output frame. A method for assembling a transmission output mechanism, characterized in that: the output section of the shaft body is passed through the through hole of the output frame, and the first guiding slope of the input section of the shaft body and the second guiding slope of the through hole of the output frame In the contact 吋, by applying axial pressure to the shaft body, the input section of the shaft body is forcibly pressed into the through hole, so that the surface hardness of the output frame is greater than the surface hardness of the shaft body, and the inside of the through hole The convex tooth presses the shaft body, and the groove is pressed out on the shaft body, and the material of the groove is pressed to one end to form a protrusion, and the end surface of the shaft body is flush with the end surface of the output frame, and the assembly is completed.
PCT/CN2018/093752 2017-05-23 2018-06-29 Transmission output mechanism, gear box and assembly method of transmission output mechanism WO2018214983A1 (en)

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