mwirth-epo/epo-nmt-datasets huggingface dataset:
在此基础上，对冷却筒的冷媒温度进行控制以使得冷却筒的温度高于通过露点仪测定的露点，因此能够步抑制光纤通路中产生霜或者结露。
The passing process includes controlling a flow rate of the dry gas such that the second dew point measured by the dew point meter is lower than the temperature of the cooling tube.
〔2〕本发明的另一个方式所涉及的光纤的制造方法具有将从玻璃母材拉丝出的玻璃纤维在涂敷树脂前收容于壳体内，使其经过将由冷媒冷却的冷却筒贯通而形成的光纤通路的工序。
With the above-described optical fiber manufacturing method according to (2), the dew point is measured at one or both of the inlet and the outlet of the fiber path by the dew point meter.
所述工序包含对导入至所述壳体的内部的所述干燥气体的流量进行控制，以使得通过所述露点仪测定的所述露点低于所述冷却筒的温度。
In addition, the flow rate of the dry gas is controlled such that the dew point measured by the dew point meter is lower than the temperature of the cooling tube, thereby reducing the formation of frost or condensation in the fiber path.
根据上述〔2〕的制造方法，通过露点仪对光纤通路的入口及出口中的至少1个的露点进行测定，因此能够与玻璃纤维一起吸入至光纤通路的气体的露点进行测定。
(3) According to yet another aspect of the present disclosure, an optical fiber manufacturing method includes a passing process, passing a glass fiber through a fiber path before applying a resin.
在此基础上，对干燥气体的流量进行控制以使得通过露点仪测定的露点低于冷却筒的温度，因此能够进一步抑制光纤通路中产生霜或者结露。
The glass fiber is drawn from a glass preform, the fiber path is formed through a cooling tube, and the cooling tube is housed in a casing and is cooled by a coolant.
〔3〕本发明的其他一个方式所涉及的光纤的制造方法具有将从玻璃母材拉丝出的玻璃纤维在涂敷树脂前收容于壳体内，使其经过将由冷媒冷却的冷却筒贯通而形成的光纤通路的工序。
The passing process includes supplying a dry gas into a dry space formed between the casing and the cooling tube.
所述工序包含向所述壳体和所述冷却筒之间的干燥空间导入露点比所述冷却筒的温度低的干燥气体。
The dry gas has a first dew point lower than the temperature of the cooling tube.
所述工序包含对导入至所述壳体的内部的所述干燥气体的所述露点进行控制，以使得通过所述露点仪测定的所述露点低于所述冷却筒的温度。
The passing process includes controlling the first dew point of the dry gas supplied into the casing such that the second dew point measured by the dew point meter is lower than the temperature of the cooling tube.
根据上述〔3〕的制造方法，通过露点仪对光纤通路的入口及出口中的至少1个的露点进行测定，因此能够对与玻璃纤维一起被吸入光纤通路的气体的露点进行测定。
With the above-described optical fiber manufacturing method according to (3), the dew point is measured at one or both of the inlet and the outlet of the fiber path by the dew point meter.
在此基础上，对干燥气体的露点进行控制以使得通过露点仪测定的露点低于冷却筒的温度，因此能够进一步抑制光纤通路中产生霜或者结露。
In addition, the dew point of the dry gas is controlled such that the dew point measured by the dew point meter is lower than the temperature of the cooling tube, thereby reducing the formation of frost or condensation in the fiber path.
〔4〕本发明的一个方式所涉及的光纤的制造装置具有：拉丝炉、冷却装置、冷媒供给装置、干燥气体供给装置、露点仪、控制装置和涂敷装置。
(4) According to an aspect of the present disclosure, an optical fiber manufacturing apparatus includes a drawing furnace, a cooling device, a coolant supply device, a dry gas supply device, a dew point meter, a controller, and an applying device.
所述拉丝炉为了从玻璃母材拉伸出玻璃纤维，对所述玻璃母材进行加热熔融。
The drawing furnace is configured to heat and melt a glass preform so as to draw a glass fiber from the glass preform.
所述冷却装置具有由冷媒进行冷却的冷却筒、将所述冷却筒贯通而形成并供所述玻璃纤维经过的光纤通路、以及对所述冷却筒进行收容的壳体。
The cooling device includes a cooling tube cooled by a coolant, a fiber path formed through the cooling tube and through which the glass fiber passes, and a casing that houses the cooling tube.
所述冷媒供给装置具有对所述冷媒的温度进行调整的温度调节器、以及从所述温度调节器朝向所述冷却筒输送所述冷媒的泵。
The coolant supply device includes a temperature controller configured to control the temperature of the coolant, and also includes a pump configured to supply the coolant from the temperature controller to the cooling tube.
所述干燥气体供给装置向所述壳体和所述冷却筒之间的干燥空间导入露点比所述冷却筒的温度低的干燥气体。
The dry gas supply device is configured to supply a dry gas into a dry space formed between the casing and the cooling tube.
所述露点仪对所述光纤通路的入口及出口中的至少1个的露点进行测定。
The dew point meter is configured to measure a second dew point at one or both of an inlet and an outlet of the fiber path.
所述控制装置对所述温度调节器进行控制，以使得所述冷却筒的温度高于通过所述露点仪测定的所述露点。
The controller is configured to control the temperature controller such that the temperature of the cooling tube is higher than the second dew point measured by the dew point meter.
所述涂敷装置对由所述冷却装置冷却的所述玻璃纤维涂敷树脂。
The applying device is configured to apply a resin to the glass fiber cooled by the cooling device.
根据上述〔4〕的制造装置，得到与上述〔1〕的制造方法相同的效果。
With the above-described optical fiber manufacturing apparatus according to (4), an effect similar to that of the optical fiber manufacturing method according to (1) can be obtained.
〔5〕本发明的另一个方式所涉及的光纤的制造装置：拉丝炉、冷却装置、冷媒供给装置、干燥气体供给装置、露点仪、控制装置和涂敷装置。
(5) According to another aspect of the present disclosure, an optical fiber manufacturing apparatus includes a drawing furnace, a cooling device, a coolant supply device, a dry gas supply device, a dew point meter, a controller, and an applying device.
所述控制装置对所述干燥气体供给装置进行控制，以使得通过所述露点仪测定的所述露点低于所述冷却筒的温度。
The controller is configured to control the dry gas supply device such that the second dew point measured by the dew point meter is lower than the temperature of the cooling tube.
根据上述〔5〕的制造装置，得到与上述〔2〕的制造方法及上述〔3〕的制造方法中的至少1个相同的效果。
With the above-described optical fiber manufacturing apparatus according to (5), an effect similar to one or both of the effect of the optical fiber manufacturing method according to (2) and the effect of the optical fiber manufacturing method according to (3) can be obtained.
[本发明的实施方式的详细内容]
[Details of Embodiments of Present Disclosure]
下面，对本发明的一个实施方式(以下记作“本实施方式”)详细地进行说明。
In the following, embodiments of the present disclosure will be described.
在下面的说明中，对相同或者对应的要素标注同一标号，有时省略说明。
In the following description, the same or corresponding elements are denoted by the same reference numerals, and a description thereof may be omitted.
〔光纤的制造装置〕
[Optical Fiber Manufacturing Apparatus]
图1是表示一个实施方式所涉及的光纤的制造装置的图。
FIG. 1 is a diagram illustrating an optical fiber manufacturing apparatus according to an embodiment.
光纤的制造装置1例如具有：拉丝炉10、冷却装置20、冷媒供给装置30、干燥气体供给装置40、外径测定器50、树脂涂敷装置60、树脂硬化装置65、卷绕装置70、入口露点仪81、出口露点仪82和控制装置90。
An optical fiber manufacturing apparatus 1 includes a drawing furnace 10, a cooling device 20, a coolant supply device 30, a dry gas supply device 40, an outer diameter measuring instrument 50, a resin applying device 60, a resin curing device 65, a winding device 70, an inlet dew point meter 81, an outlet dew point meter 82, and a controller 90.
此外，光纤的制造装置1如后面所述，只要具有入口露点仪81和出口露点仪82中的至少1个即可。
As will be described later, the optical fiber manufacturing apparatus 1 may include one or both of the inlet dew point meter 81 and the outlet dew point meter 82.
拉丝炉10为了从玻璃母材2拉伸出玻璃纤维3，对玻璃母材2进行加热熔融。
The drawing furnace 10 heats and melts a glass preform 2 so as to draw a glass fiber 3 from the glass preform 2.
玻璃母材2预先形成为棒状，在径向具有折射率分布。
The glass preform 2 is formed in a bar shape beforehand, and has a refractive index distribution in the radial direction.
以玻璃母材2的长度方向成为铅垂方向的方式将玻璃母材2悬挂。
The glass preform 2 is suspended such that the longitudinal direction of the glass preform 2 is the vertical direction.
玻璃纤维3从玻璃母材2的下端部拉伸为线状而下垂。
The glass fiber 3 is drawn linearly from the lower end of the glass preform 2, and is suspended.
玻璃纤维3与玻璃母材2同样地，在径向具有折射率分布。
Similar to the glass preform 2, the glass fiber 3 has a refractive index distribution in the radial direction.
玻璃纤维3具有纤芯和将纤芯的外周覆盖的包层。
The glass fiber 3 include a core and a cladding that surrounds the outer periphery of the core.
纤芯的折射率大于包层的折射率。
The refractive index of the core is larger than the refractive index of the cladding.
拉丝炉10具有对玻璃母材2进行加热熔融的加热源11和对加热源11进行收容的炉框体12。
The drawing furnace 10 includes a heat source 11 that heats and melts the glass preform 2, and a furnace body 12 that houses the heat source 11.
加热源11例如为电加热器。
The heat source 11 may be an electric heater.
此外，加热源11也可以由线圈和导体构成。
Note that the heat source 11 may be configured by a coil and a conductor.
如果高频电源对线圈施加电流，则线圈在导体的周围形成磁场，由于磁场的变化而涡电流流过导体，导体发热。
When a current is applied to the coil by a high-frequency power source, the coil forms a magnetic field around the conductor, and an eddy current flows in the conductor, thereby causing the conductor to generate heat.
炉框体12在炉框体12的上端部具有入口。
The furnace body 12 has an inlet at the upper end of the furnace body 12.
玻璃母材从炉框体12的入口插入至炉框体12的内部。
The glass preform 2 is inserted from the inlet of the furnace body 12 into the inside of the furnace body 12.
此外，折边头的狭缝表面之间的距离(狭缝的间隙)通常被设置为具有预定值。
Further, in general, a distance between the slit surfaces of the tuck-in head (gap of the slit) is set to have a predetermined value.
因此，当组合第一构件和第二构件以形成折边头时，有必要以使得包括在两个构件中的狭缝表面之间的距离具有预定值的方式进行组合。
Thus, when combining the first member and the second member to form the tuck-in head, it is necessary to perform combining in such a manner that a distance between the slit surfaces included in both members has the predetermined value.
因此，在将第一构件和第二构件直接组合以形成折边头的情况下，在两个构件中的一个构件上形成凸部，在另一个构件上形成凹部，然后通过将凸部嵌合于凹部中，将两个构件组合在一起。
Therefore, in a case where the first member and the second member are directly combined to form the tuck-in head, a convex portion is formed on one of the two members, a concave portion is formed on the other, and then the two members are combined by fitting the convex portion into the concave portion.
由于这种构造，容易以使狭缝表面之间的距离具有预定值的方式组合两个构件。
Due to this configuration, it is easy to combine the two members in such a manner that the distance between the slit surfaces has the predetermined value.
图1是示出了具有根据本发明的用于空气喷射式折边装置的折边头的空气喷射式织机的示例的示意性俯视图。
Fig. 1 is a schematic plan view showing an example of an air-injection type loom having a tuck-in head for an air-injection type tuck-in device according to the present invention.
图2是从机织织物侧观察的根据本发明实施方式的纱线供应侧的折边头的侧视图。
Fig. 2 is a side view of the tuck-in head on a yarn supplying side according to an embodiment of the present invention, as viewed from a woven fabric side.
图3是本发明实施方式的纱线供应侧的折边头的分解图。
Fig. 3 is an exploded view of the tuck-in head on the yarn supplying side according to the embodiment of the present invention.
图4A和图4B是折边头的侧面图，说明了分裂位置的变形，其中仅第二构件具有构成狭缝底面的表面。
Figs. 4A and 4B are side views of the tuck-in head, illustrating a variant of a division position, in which only a second member has a surface constituting a bottom surface of a slit.
图5A是折边头的侧视图，说明了分裂位置的变形，其中仅第一构件具有构成狭缝底面的表面。
Fig. 5A is a side view of the tuck-in head, illustrating a variant of the division position, in which only a first member has a surface constituting the bottom surface of the slit.
图5B是折边头的局部放大侧视图，说明了分裂位置的变形，其中第一构件和第二构件具有形成狭缝底面的部分。
Fig. 5B is a partially enlarged side view of the tuck-in head, illustrating a variant of a division position, in which a first member and a second member have a portion forming the bottom surface of the slit.
图6是示出由第一构件、第二构件和第三构件构成的折边头的变形例的侧视图。
Fig. 6 is a side view showing a variant of the tuck-in head constituted of a first member, a second member and a third member.
在下文中，将参照图1至图3描述根据本发明的用于空气喷射型折边装置的折边头的实施例。
Hereinafter, an embodiment of a tuck-in head for an air-injection type tuck-in device according to the present invention will be described with reference to Figs. 1 to 3.
图1是空气喷射式织机的示例。
Fig. 1 is an example of an air-injection type loom.
空气喷射式织机1具有折边装置2，该折边装置2将引纬(打纬)的纬纱Y的端部(以下称为纬纱端部)折回(折)到经纱W的开口部，随后将纬纱Y引入其中。
In such an air-injection type loom 1, a weft Y is weft-inserted by a compressed air injected from a main nozzle MN or the like and then is beaten on a cloth fell CF of a woven fabric T by a reed R. Also, the air-injection type loom 1 has a tuck-in device 2 for folding back (tucking) an end portion of the weft-inserted (beaten) weft Y (hereinafter, referred to as a weft end portion) into an opening of a warp W, into which the weft Y is subsequently to be weft-inserted.
另外，在折边装置2的每个纱线供应侧(主喷嘴MN侧)和相反侧分别具有用于执行空气喷射等一系列的折边动作的折边头3，如上述那样将纬纱端部折回。
Further, the tuck-in device 2 has, on each of a yarn supplying side (the main nozzle MN side) and an opposite side thereof, a tuck-in head 3 for performing a series of tuck-in operations, such as air injection, to fold back the weft end portion as described above.
也就是说，折边装置2是所谓的空气喷射式的折边装置。
That is, the tuck-in device 2 is a so-called air-injection type tuck-in device.
此外，折边装置2包括分配给每个折边头3的切刀C。
Further, the tuck-in device 2 includes a cutter C assigned to each of the tuck-in heads 3.
此外，每个折边头3在编织宽度方向上设置在切刀C和机织织物T的织边之间。
In addition, each tuck-in head 3 is provided between the cutter C and a selvage of the woven fabric T in a weaving width direction.
折边头3是具有大致长方体外观的块状构件。
The tuck-in head 3 is a block-like member which has a substantially rectangular parallelepiped appearance.
而且，每个折边头3具有由上、下对置的狭缝表面4a、4b限定的狭缝4。
Also, each tuck-in head 3 has a slit 4 defined by opposing upper and lower slit surfaces 4a, 4b.
此外，狭缝4具有连接上侧的狭缝表面4a和下侧的狭缝表面4b的底面4c。
Further, the slit 4 has a bottom surface 4c connecting upper and lower slit surfaces 4a, 4b.
另外，在折边头3上设有由分别与狭缝表面4a、4b连续的导向面4d、4e构成的引纬部5，以确保伴随着筘R的跳动操作，能够更可靠地进行将纬纱端部导入到狭缝4中。
Further, the tuck-in head 3 has a weft introducing portion 5 constituted of guide surfaces 4d, 4e formed to be continuous to the slit surfaces 4a, 4b, respectively, in order to ensure that introduction of the weft end portion in the slit 4 accompanied with beating operation of the reed R can be more reliably performed.
引纬部5的形成使得引导向面4d、4e之间的距离随着其远离狭缝4而增加。
The weft introducing portion 5 is formed such that a distance between the guide surfaces 4d, 4e is increased as it goes away from the slit 4.
因此，当从正面观察折边头3的侧表面3a时，狭缝4从引纬部5延伸至底面4c。
Therefore, the slit 4 extends from the weft introducing portion 5 to the bottom surface 4c when viewing a side surface 3a of the tuck-in head 3 from a front side thereof.
同时，在下文中，狭缝4延伸的方向在折边头3中被称为“延伸方向”。
Meanwhile, hereinafter, a direction, in which the slit 4 extends, is referred to as an "extension direction" in the tuck-in head 3.
此外，折边头3的布置使得相对于垂直方向，狭缝4的位置与经线WL重合，并且相对于经向方向，延伸方向与经向重合；并且，使得随着引纬部5朝向筘R的方向，狭缝4的底面4c位于织口CF附近。
Also, the tuck-in head 3 is arranged such that, with respect to a vertical direction, a position of the slit 4 coincides with a warp line WL and, with respect to a warp direction, the extension direction coincides with the warp direction, and also such that the bottom surface 4c of the slit 4 is positioned near to the cloth fell CF with the weft introducing portion 5 oriented toward the reed R.
此外，折边头3具有保持孔6和保持喷嘴7，保持孔6用于保持通过打纬操作而被引入到狭缝4中的纬纱端部直到进行折边时，保持喷嘴7用于向保持孔6喷射压缩空气以便于将纬纱端部引入并保持在保持孔6中。
Further, the tuck-in head 3 has a holding hole 6 for holding the weft end portion, which has been introduced in the slit 4 by the beating operation, until tuck-in is performed, and a holding nozzle 7 for injecting a compressed air toward the holding hole 6 in order to introduce and hold the weft end portion in the holding hole 6.
同时，在本实施例中，保持孔6形成为跨越下侧的狭缝表面4b和狭缝4的底面4c之间的边界，从而在两个表面4b、4c中开口。
Meanwhile, in the present embodiment, the holding hole 6 is formed to extend across a border between the lower slit surface 4b and the bottom surface 4c of the slit 4, thereby opening in both surfaces 4b, 4c.
另外，保持喷嘴7形成为在上侧的狭缝表面4a中开口，从而面对保持孔6。
In addition, the holding nozzle 7 is formed to open in the upper slit surface 4a, thereby facing the holding hole 6.
此外，折边头3具有：释放喷嘴8，其用于喷射压缩空气以将保持在保持孔6中的纬纱端部从保持孔6中喷出；以及折边喷嘴9，其用于喷射压缩空气以将纬线端部折入经纱W的开口中。
Further, the tuck-in head 3 has a release nozzle 8 for injecting a compressed air to eject the weft end portion, which is held in the holding hole 6, from the holding hole 6, and a tuck-in nozzle 9 for injecting a compressed air to tuck the weft end portion into an opening of the warp W. Meanwhile, like the holding nozzle 7, the release nozzle 8 is formed to open in the lower slit surface 4b and the bottom surface 4c.
但是，在图示的例子中，在将折边头3安装在织机1上的状态下，两个释放喷嘴8形成为比保持孔6更靠近织物T。
But, in the shown example, two release nozzles 8 are formed to be positioned closer to the woven fabric T than is the holding hole 6 in a state where the tuck-in head 3 is installed on the loom 1.
因此，通过从释放喷嘴8注入的压缩空气使从保持孔6喷出的纬纱端部到达折边喷嘴9的注入作用区域。
Therefore, it is possible to cause the weft end portion, which has been ejected from the holding hole 6 by the compressed air injected from the release nozzle 8, to be brought to an injection effect region of the tuck-in nozzle 9.
同时，在图示的例子中，在狭缝4的上下两侧，沿着狭缝4的延伸方向上并排形成有多个折边嘴9。
Further, the tuck-in nozzle 9 is formed to open in the side surface 3a of the tuck-in head 3 facing the woven fabric T. Meanwhile, in the shown example, a plurality of tuck-in nozzles 9 are formed to open side by side in the extension direction along the slit 4 on each of upper and lower sides of the slit 4.
另外，纬纱端部通过从释放喷嘴8喷出的压缩空气被带到折边喷嘴9的注入作用区域，该纬纱端部通过从每个折边喷嘴9注入的压缩空气被折入经纱W的开口中，从而完成了一系列折边操作。
In addition, the weft end portion brought to the injection effect region of the tuck-in nozzle 9 by the compressed air injected from the release nozzle 8 is tucked into an opening of the warp W by an compressed air injected from each of the tuck-in nozzles 9, thereby completion the series of tuck-in operations.
对于如上所述构造的折边装置2的各折边头3，根据本发明的折边头是通过组合至少两个构件而构成的，所述至少两个构件包括第一构件和第二构件，第一构件构成包括上侧的狭缝表面的部分，第二构件构成包括下侧的狭缝表面的部分。
For each of the tuck-in heads 3 of tuck-in device 2 configured as described above, the tuck-in head according to the present invention is constructed by combining at least two members, including a first member constituting a portion including the upper slit surface and a second member constituting a portion including the lower slit surface.
另外，在本实施例中，假设每个折边头3仅由第一构件10和第二构件11构成。
Additionally, in the present embodiment, it is assumed that each of the tuck-in heads 3 is constructed only by a first member 10 and a second member 11.
换句话说，折边头3被构造成分为第一构件10和第二构件11。
In other words, the tuck-in head 3 is configured to be divisible into the first member 10 and the second member 11.
折边头3的详细结构如下。
The detailed configuration of the tuck-in head 3 is as follows.
同时，除了折边头3形成为在编织宽度方向上彼此对称以外，在纱线供应侧的折边头3和相反侧的折边头3具有相同的构造。
Meanwhile, the tuck-in head 3 on the yarn supplying side and the tuck-in head 3 on the opposite side have the same configuration, except that the tuck-in heads 3 are formed to be symmetrical with each other in the weaving width direction.
因此，以下仅说明一个折边头(在图示的例子中为纱线供应侧的折边头)，省略其他的说明。
Accordingly, hereinafter, only one tuck-in head (in the shown example, the tuck-in head on the yarn supplying side) will be described and the description of the other will be omitted.
如图2所示，折边头3被构造成使得包括上侧的狭缝表面4a的部分能够在底面4c的延伸方向上的位置与另一部分分开。
As shown in Fig. 2, the tuck-in head 3 is configured such that a portion including the upper slit surface 4a can be divided from the other portion at a position of the bottom surface 4c in the extension direction.
也就是说，折边头3被构造成使得如上所述的分开的包括上侧的狭缝表面4a的构件和包括下侧的狭缝表面4b的构件能够分开形成，然后将两个构件组合。
That is, the tuck-in head 3 is configured such that a member including the upper slit surface 4a and a member including the lower slit surface 4b, which can be divided as described above, are separately formed and then the two members are combined.
而且，包括上侧的狭缝表面4a的构件是第一构件10，包括下侧的狭缝表面4b的构件是第二构件11。
Also, the member including the upper slit surface 4a is the first member 10, and the member including the lower slit surface 4b is the second member 11.
盖部22与容纳部21的与端部21a相反侧的端部21b螺合而连接设置。
In FIG. 2, an end portion 21 aof the accommodating portion 21 located on the right side is the connection end 20 a, The connection end 20 ais open and closed by a shaft end member 23A.
盖部22的直径与容纳部21的直径相同。
The cover 22 is screwed and connected with an end portion 21 bof the accommodating portion 21 on the opposite side of the end portion 21 a.A diameter of the cover 22 is the same as a diameter of the accommodating portion 21.
容纳部21和盖部22也可以是一体的结构。
The accommodating portion 21 and the cover 22 may have an integral structure.
第二壳体25是在盖部22内呈同轴地配置的、相对于盖部22在轴向上能相对移动的可动部件。
The second housing 25 is a movable member that is arranged coaxially within the cover 22 and is relatively movable in the axial direction with respect to the cover 22.
第二壳体25的外径小于第一壳体20的内径。
An outer diameter of the second housing 25 is smaller than, an inner diameter of the first housing 20.
图2中位于左侧的第二壳体25的端部是连接端25a。
An end portion of the second housing 25 located on the left side in FIG. 2 is the connection end 25 a.
该连接端25a开口，通过轴端部件26而被塞住。
The connection end 25 ais open and closed by a shaft end member 26.
即使在第二壳体25相对于第一壳体20后退的状态下，包括连接端25a的轴端部件26也从第一壳体20(盖部22)的前端20b突出。
The shaft end member 26 including the connection end 25 aprotrudes from a distal end 20 bof the first housing 20 (cover 22) even in a state where the second housing 25 retracts with respect to the first housing 20.
伸缩机构30包括使第二壳体25相对于第一壳体20进入的螺旋弹簧32、引导第二壳体25相对于第一壳体20的移动(伸缩)的主轴34及旋转机构37。
The telescopic mechanism 30 includes; a coil spring 32 that advances the second housing 25 with respect to the first housing 20; a spindle 34 and a rotation mechanism 37 that guide the movement (extension and contraction) of the second housing 25 with respect to the first housing 20.
螺旋弹簧32向第二壳体25相对于第一壳体20(盖部22)进入的方向弹性地施力。
The coil spring 32 elastically biases the second housing 25 so as to advance with respect to the first housing 20 (cover 22).
该螺旋弹簧32被容纳在第二壳体25内，在被压缩的状态下与第二壳体25呈同轴地配置。
The coil spring 32 is accommodated in the second housing 25 and is arranged coaxially with the second housing 25 in a compressed state.
图2中位于右侧的螺旋弹簧32的一端抵接于第一壳体20，图2中位于左侧的螺旋弹簧32的另一端抵接于第二壳体25。
One end of the coil, spring 32 located on the right side in FIG. 2 abuts on the first housing 20, and the other end of the coil spring 32 located on the left side in FIG. 2 abuts on the second housing 25.
主轴34以沿着第二壳体25的轴线延伸的方式，被容纳在第二壳体25内。
The spindle 34 is accommodated in the second housing 25 so as to extend along the axis of the second housing 25.
主轴34的基端34a从第二壳体25突出，在第一壳体20内机械地被连接于齿轮机构44。
A proximal end 34 aof the spindle 34 protrudes from the second housing 25 and is mechanically, connected to the gear mechanism 44 in the first housing 20.
主轴34的基端34a侧被可旋转地支承于被配置在盖部22内的轴承35。
The proximal end 34 aside of the spindle 34 is rotatably supported by a bearing 35 arranged in the cover 22.
旋转机构37通过第二壳体25相对于盖部22的相对移动，以第二壳体25的轴线为中心，使主轴34旋转。
The rotation mechanism 37 rotates the spindle 34 about the axis of the second housing 25 by moving the second housing 25 relative to the cover 22, The rotation mechanism 37 includes a spindle nut 38, a push rod 39, and a guide tube 40.
该旋转机构37包括主轴螺母38、推杆39以及导向管40。
The spindle nut 38, the push rod 39, and the guide tube 40 are arranged between the coil spring 32 and the spindle 34 in the radial direction of the second housing 25.
更具体而言，在螺旋弹簧32的内侧配置有导向管40，在导向管40的内侧容纳有推杆39，在推杆39的一端固定有主轴螺母38。
More specifically, the guide tube 40 is arranged inside the coil spring 32, the push rod 39 is accommodated inside the guide tube 40, and the spindle nut 38 is fixed to one end of the push rod 39.
齿轮机构44被配置在容纳部21内的端部21b附近。
The gear mechanism 44 is arranged near the end portion 21 bin the accommodating portion 21.
该齿轮机构44是在第一壳体20的轴向上，将从一端侧所输入的旋转速度变速并从另一端侧输出的变速机构。
The gear mechanism 44 is a transmission mechanism that changes the rotational speed input from one end side and outputs the changed rotational speed from the other id in the axial direction of the first housing 20.
齿轮机构44具有被配置在盖部22侧的第一连接部45A和被配置在连接端20a侧的第二连接部45B。
The gear mechanism 44 has a first connecting portion 45A arranged close to the cover 22 and a second connecting portion 45B arranged close to the connection end 20 a.
它们分别包括位于第一壳体20的轴线上的一个太阳齿轮46和被配置在太阳齿轮46的外周的多个(例如四个)行星齿轮47。
Each of the first connecting portion 45A and the second connecting portion 45B includes one sun gear 46 located on the axis of the first housing 20 and a plurality of (for example, four) planetary gears 47 arranged on the outer periphery of the sun gear 46.
另外，连接部45A、45B包括围绕多个行星齿轮47的外侧的盒48A。
In addition, the connecting portions 45A and 45B include a case 48A surrounding the outside of the plurality of planetary gears 47.
在盒48A的内周面，形成有行星齿轮47啮合的齿。
Teeth with which the planetary gear 47 meshes zine formed o an inner peripheral surface of the case 48A.
齿轮机构44的齿轮比被设定为第一连接部45A侧的旋转速度慢于第二连接部45B侧的旋转速度。
A gear ratio of the gear mechanism 44 is set such that the rotational speed on the first connecting portion 45A side is lower than the rotational speed on the second connecting portion 45B side.
也就是说，加速被输入至第一连接部45A的旋转并将其输出至第二连接部45B，另一方面，减速被输入至第二连接部45B的旋转并将其输出至第一连接部45A。
In other words, the rotation input to the first connecting portion 45A is accelerated and output to the second connecting portion 45B, and the rotation input to the second connecting portion 45B is decelerated and output to the first connecting portion 45A.
主轴34的基端34a机械性地连接于第一连接部45A的太阳齿轮46。
The proximal end 34 aof the spindle 34 is mechanically connected to the sun gear 46 of the first connecting portion 45A.