CN101871507A - Toothed cable, cable device with toothed cable and moving system of moving body - Google Patents

Abstract

The present invention provides a toothed cable that can reliably slide a yarn on the inner surface of a guide member without damage, thereby reducing sliding sound, and can maintain the softness of the yarn without bonding Keep the yarn in the groove. The toothed cable includes: a core cable; a metal wire wound helically around the core cable at a constant pitch; Helically wound in the groove, when the yarn is helically wound in the groove formed by the core cable and the metal wire, which has a side wall surface and a bottom surface, the yarn is in contact with the side wall surface from the core wire toward the radial direction. Pile is arranged on the outside, and the pile has a length protruding to the outside of the groove, and the distance from the center of the core yarn to the bottom surface is smaller than the distance from the center of the core yarn to the front end of the pile before the yarn is wound in the groove.

Description

Toothed cable, cable device with toothed cable and moving system of moving body

technical field

The present invention relates to a toothed cable, a cable device with the toothed cable, and a moving system for a moving body.

Background technique

Conventionally, a toothed cable consists of a core cable and a metal wire (wire) wound helically around the core cable at a constant pitch. The wire meshes to convert the rotational motion of the gear into the linear motion of the toothed cable. The toothed cable moves along an appropriately curved guide member, and the end of the toothed cable is connected to a moving body such as a sunroof or window glass of an automobile, so that it can be used as a moving system of the moving body. In order to reduce the sliding sound produced when the surface of the wire of the toothed cable slides on the inner surface of the guide member, there is known a method of using a yarn (yarn) in a groove formed by the core cable and the wire. A method in which yarn slides over the inner surface of a guide member instead of a wire.

Patent Document 1 discloses a toothed cable in which a yarn having elasticity in the radial direction is wound in a groove so that the yarn protrudes to a radially outer side than the metal wire. The yarn slides on the inner surface of the guide member.

In addition, Patent Document 2 discloses a toothed cable provided with an intermediate layer. By heating the core cable and the helical metal wire and winding the yarn made of thermoplastic resin in the groove, the core cable The intermediate layer is obtained by melting and fixing the yarns in the grooves by the heat of the wire and the wire.

In addition, Patent Document 3 discloses a toothed belt formed by applying an adhesive around the core wire and then bonding and fixing the yarn in which piles are radially planted on the core wire in grooves. cables.

Patent Document 1: Japanese Publication No. 55-170518

Patent Document 2: Japanese Patent Application Laid-Open No. 63-28991

Patent Document 3: Japanese Patent Application Laid-Open No. 6-294460

However, the toothed cable disclosed in Patent Document 1 has a problem that the yarn is gradually worn and damaged because the gear that moves the toothed cable is always in contact with the yarn, so that the yarn cannot be moved. Sliding on the inner surface of the guide member causes the sliding sound to become louder.

In addition, the toothed cable disclosed in Patent Document 2 has a problem that, due to heating to a temperature higher than the melting point of the yarn, the fluff is melted and shortened, so that the yarn cannot slide on the inner surface of the guide member. As a result, the sliding sound becomes louder.

In addition, the toothed cable disclosed in Patent Document 3 has a problem that, when the amount of adhesive applied when bonding the yarn to the core cable is large, the adhesive spreads to the guide member. The pile hardens in the pile on the side, so that the sound of the yarn sliding on the inner surface of the guide member becomes louder. On the other hand, when the amount of the adhesive is small, the yarn falls out of the groove due to poor adhesion, and the yarn cannot slide on the inner surface of the guide member, resulting in a problem that the sliding sound becomes louder. In addition, there is also a problem that, when the yarn is wound in the groove, the fluff deformed by receiving a compressive force between the core wire and the core cable pushes up the core wire to return to its original shape. In this state, the core wire is in a state where the core wire floats out of the groove due to the hardening of the adhesive, and the repeated contact between the core wire and the gear causes the yarn to be damaged soon, so that the yarn cannot slide on the inner surface of the guide member, resulting in a sliding sound get bigger.

Contents of the invention

The present invention has been made in view of the above problems, and an object of the present invention is to provide a toothed cable that can reliably slide the yarn on the inner surface of the guide member without chipping, thereby reducing the sliding sound, and without bonding. The yarn can be held in the groove while maintaining the softness of the yarn.

The toothed cable of the present invention includes: a core cable; a metal wire wound helically around the above-mentioned core cable at a constant pitch; a yarn including a core wire and fluff fixed on the above-mentioned core wire, The yarn is helically wound in a groove formed by the core cable and the metal wire and has a side wall surface and a bottom surface, wherein when the yarn is helically wound in the groove, The above-mentioned fluff is arranged radially outward from the core filament in contact with the above-mentioned side wall surface, and the above-mentioned fluff has a length protruding to the outside of the above-mentioned groove, and the distance from the center of the above-mentioned core filament to the above-mentioned bottom surface is smaller than when the yarn is wound. The distance from the center of the above-mentioned core filament to the front end of the above-mentioned fluff before the above-mentioned groove.

In addition, the toothed cable of the present invention includes: a core cable; a metal wire wound helically around the core cable at a constant pitch; a yarn including a core wire and a wire fixed to the core wire fluff, the yarn is helically wound in a groove having a side wall surface and a bottom surface formed by the above-mentioned core cable and the above-mentioned metal wire, characterized in that the toothed cable is produced by a manufacturing method including the following steps : That is, the process of winding the above-mentioned yarn in the above-mentioned groove in the state where tension is applied; the process of softening the above-mentioned core yarn by heating while maintaining the above-mentioned tension; cooling the softened above-mentioned core yarn. process.

The present invention has the following effects.

(1) When the yarn of the toothed cable of the present invention is wound helically in the groove, since the fluff has a length protruding to the outside of the groove, the yarn can be reliably placed on the inner surface of the guide member. Sliding, and since the distance from the center of the core wire to the bottom of the groove is smaller than the distance from the center of the core wire to the front end of the fluff before the yarn is wound in the groove, it is possible to reliably keep the core wire out of contact with the gear position.

(2) When at least both ends of the yarn are fixed to at least one of the core cable and the metal wire, the yarn can be reliably held on the core cable without deviating from the groove.

(3) In addition, since the process of winding the yarn in the groove under tension is applied, the process of softening the core yarn by heating while maintaining tension, and cooling the softened core yarn are adopted, The toothed cable of the present invention is produced by the manufacturing method of the process, so the position of the core wire can be reliably held when the yarn is wound in the groove.

(4) The yarn is made of a thermoplastic resin. When the melting point of the core yarn is lower than that of the fluff, the fluff does not melt when the core yarn is softened, so that the softness of the yarn can be maintained.

Description of drawings

FIG. 1 is a side view of a toothed cable according to an embodiment of the present invention.

Fig. 2 is an enlarged cross-sectional view showing an example of the yarn according to the embodiment of the present invention.

Fig. 3 is a partially enlarged side view of the toothed cable of Fig. 1 .

Fig. 4 is a partially enlarged side view of the toothed cable in Fig. 3 in use.

Fig. 5 is an enlarged cross-sectional view showing another example of the yarn according to the embodiment of the present invention.

FIG. 6 is an explanatory view showing a state of measuring the sliding sound of the toothed cable in the guide member according to the embodiment of the present invention.

Detailed ways

Next, a toothed cable according to an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a side view of a toothed cable according to an embodiment of the present invention, Fig. 2 is an enlarged cross-sectional view showing an example of a yarn according to an embodiment of the present invention, and Fig. 3 is a partially enlarged side view of the toothed cable of Fig. 1 , Fig. 4 is a partial enlarged side view of the use state of the toothed cable of Fig. 3, Fig. 5 is an enlarged sectional view showing another example of the yarn of the embodiment of the present invention, and Fig. An explanatory diagram of the state of the sliding sound of the toothed cable in the guide member.

As shown in Figure 1, the core cable 1 includes: a core wire 2, which is a straight galvanized hard steel wire with a diameter of 0.6-0.8 mm; 0.4-0.6mm galvanized hard steel wire; the upper layer 4 is formed by winding six galvanized hard steel wires with a diameter of 0.4-0.6mm on the above-mentioned lower layer 3 along the opposite winding direction to the above-mentioned lower layer 3, A galvanized hard steel wire 5 having a diameter of 1.0 to 1.2 mm is wound on the upper layer 4 in the same winding direction as the lower layer 3 at a pitch of 2.4 to 2.6 mm.

The groove 6 formed by the above-mentioned metal wire 5 and the above-mentioned core cable 1 is formed in a spiral shape by using the outer surface of the above-mentioned metal wire 5, that is, the side wall portion 7, and the outer surface of the core cable 1, that is, the bottom 8. Yarn 9 described later is wound inside.

As shown in Fig. 2, the yarn 9 is composed of a core yarn 9a and piles 9b. Fibers obtained by bundling thermoplastic resin fibers such as nylon 6, nylon 66, polyester, and cellulose can be used as the core yarn 9a. Nylon 6, Nylon 66, Nylon 6.10, Nylon 6.12, polyester and other fibers having a thickness of 25-40 μm and a length of 1.5-2.0 mm can be used as the fluff 9b, but the material used is not necessarily limited to this range.

As a method for producing the above-mentioned yarn 9, a method of applying an adhesive on the above-mentioned core yarn 9a, and then radially fixing the fluff 9b on the above-mentioned core yarn 9a by means of electrostatic tufting or the like can be used. In addition, well-known techniques such as a method of arranging piles in a direction perpendicular to the direction of the core filaments between two core filaments, and then twisting the two core filaments to fix the piles on the core filaments (refer to Figure 5).

In order to wind the yarn 9 in the groove 6, the yarn 9 supply device is first rotated while the core cable and the metal wire are aligned without rotation, and then the yarn 9 is applied to the extent that the core wire can be brought into contact with the bottom of the groove. The tension side winds the yarn 9 in the groove 6. The tension for winding the yarn 9 is set such that the fluff located between the core wire and the core cable is deformed so that the distance La from the center of the core wire to the bottom surface as shown in FIG. 9 is the distance Lb (refer to FIG. 2 ) from the center of the core wire to the front end of the fluff before being wound in the groove, and when the metal wire 5 is meshed with the gear 11 as shown in FIG. touch. At this time, stress in a direction away from the groove is applied to the core wire.

Then, when the core cable 1 and the metal wire 5 are heated to the temperature at which the core wire of the yarn softens by means of high-frequency induction heating while maintaining the above-mentioned tension, the core wire softens, thereby releasing the core wire from leaving the groove. direction of stress. At this time, since the core wire does not melt, the relationship of La<Lb can be maintained. In addition, if the melting point of the thermoplastic resin used for the fluff is higher than that of the thermoplastic resin used for the core, the fluff will not be melted when the core is softened, so that the softness of the fluff can be maintained.

The core filament is then allowed to cool naturally, thereby hardening the yarn while retaining its shape as it was originally wound in the slot. Accordingly, only the stress applied to the core yarn in the direction away from the groove is released, and the yarn can be reliably held in the groove in a relationship of La<Lb.

Finally, in order to form the continuously produced toothed cable into a desired length, the core cable, the metal wire, and the yarn are cut together using a cutting machine. At this time, the frictional heat generated by the friction between the rotary blade of the cutting machine and the toothed cable melts the yarn at the cutting portion, thereby fixing both ends of the yarn in the longitudinal direction to the core cable and/or the metal wire.

In the toothed cable obtained as described above, when the wire meshes with the gear, the core wire does not come into contact with the front end of the gear, so that the yarn is not damaged. In addition, since the fluff is made to protrude outside the groove, it is possible to reliably slide the yarn on the inner surface of the guide member to reduce sliding sound. In addition, since the yarn is bonded to the core cable without using an adhesive, the flexibility of the yarn can be maintained.

The toothed cable can be used as a cable device that moves in the above-mentioned guide member by inserting the above-mentioned toothed cable into the guide member. A tube made of metal or synthetic resin, a guide member (guide) having a U-shaped cross section whose width and height are larger than the outer diameter of the above-mentioned metal wire, and the like are configured.

In addition, by connecting the end of the above-mentioned toothed cable to a moving body such as a sunroof of an automobile, a window glass, a seat, a slide door (slide door), and a windshield member of a two-wheeled vehicle, the toothed cable can be The cable is used as a moving system that converts the rotational motion of the gear into the linear motion of the moving body, but the object of use of the toothed cable of the present invention is not limited to the above moving body.

Next, the toothed cable of the present invention will be described with reference to specific examples and comparative examples.

Example 1

6 galvanized hard steel wires with a diameter of 0.5 mm are wound on the core wire of a straight galvanized hard steel wire with a diameter of 0.7 mm as the lower layer, and 6 wires with a diameter of 0.5mm galvanized hard steel wire as the upper layer, thus forming the core cable. Further, on the upper layer of the core cable, galvanized hard steel wires having a diameter of 1.2 mm were wound as metal wires at a pitch of 2.54 mm in the same winding direction as the lower layer. In addition, an adhesive was applied to a core wire with a diameter of 400 μm obtained by bundling filaments made of nylon 6, and then fluff made of nylon 66 with an outer diameter of 28.6 μm and a length of 1.8 mm was electrostatically implanted on the core. thread to form a yarn. While applying tension to the yarn, the yarn is wound in the groove formed by the core cable and the metal wire, and then heated at a temperature of about 160 degrees for about 10 seconds by high-frequency induction heating, and then the yarn is made Cool naturally to obtain the toothed cable of Example 1.

Comparative example 1

On the core wire of a linear galvanized hard steel wire with a diameter of 0.68 mm, 6 electroless-plated hard steel wires with a diameter of 0.51 mm are wound as the lower layer, and 6 wires with a diameter of A 0.49 mm electroless plated hard steel wire is used as an upper layer, thereby forming a core cable. In addition, a galvanized hard steel wire having a diameter of 1.18 mm was wound as a metal wire at a pitch of 2.50 mm in the same winding direction as the lower layer on the upper layer of the core cable. In addition, an adhesive is applied to a core wire with a diameter of 380 μm obtained by bundling nylon 6 filaments, and then fluff made of nylon 66 with an outer diameter of 47.4 μm and a length of 1.94 mm is electrostatically implanted on the core wire. make up the yarn. An adhesive is applied to a groove formed by a core cable and a metal wire, and the yarn is wound in the groove in which the adhesive is applied while applying tension to the yarn, and the adhesive is dried to obtain The toothed cable of Comparative Example 1.

Comparative example 2

On the core wire of a linear electroless-plated hard steel wire with a diameter of 0.72 mm, 6 electroless-plated hard steel wires with a diameter of 0.53 mm are wound as the lower layer, and 6 wires with a diameter of A 0.53 mm electroless plated hard steel wire is used as an upper layer, thereby forming a core cable. In addition, an electroless plated hard steel wire having a diameter of 1.2 mm was wound as a metal wire at a pitch of 2.60 mm in the same winding direction as that of the lower layer on the upper layer of the core cable. In addition, an adhesive was applied to a core wire with a diameter of 334 μm obtained by bundling nylon 6 filaments, and then fluff made of nylon 66 with an outer diameter of 30.7 μm and a length of 1.73 mm was electrostatically implanted on the core wire. make up the yarn. An adhesive is applied to a groove formed by a core cable and a metal wire, and the yarn is wound in the groove in which the adhesive is applied while applying tension to the yarn, and the adhesive is dried to obtain The toothed cable of Comparative Example 2.

experimental method

为5.2mm、壁厚为2.0mm的公知的天窗系统用聚对苯二甲酸乙二醇酯制引导构件12中，利用安装在距离引导构件的弯曲部的顶点P为M＝300mm的位置上的话筒13测量在以100mm/秒的速度对带齿线缆的一端进行拉拽操作时的带齿线缆在引导构件的内表面上的滑动声音。结果如表1所示。Insert the toothed cables 10 of Example 1, Comparative Example 1, and Comparative Example 2 into an inner diameter of R=100 mm and bent at 90 degrees as shown in FIG. 6 at an ambient temperature of about 20 degrees.

In the known guide member 12 made of polyethylene terephthalate for a sunroof system with a thickness of 5.2 mm and a wall thickness of 2.0 mm, the guide member 12 installed at a position of M=300 mm from the vertex P of the curved portion of the guide member is used. The microphone 13 measures the sliding sound of the toothed cable on the inner surface of the guide member when one end of the toothed cable is pulled at a speed of 100 mm/sec. The results are shown in Table 1.

Table 1

Example 1 Comparative example 1 Comparative example 2 Sliding sound (dB) 49.7 55.1 53.1

Know according to table 1, the difference of the sliding sound of embodiment 1 and comparative example 1 is 5.4dB, the difference of the sliding sound of embodiment 1 and comparative example 2 is 3.4dB, compares comparative example 1 and comparative example 2, embodiment 1 has less sliding sound. In addition, the sliding sound of Example 1 was 49.7 dB, which is 50 dB or less, and is a sliding sound that does not make passengers feel uncomfortable even if the toothed cable is connected to the moving body of the automobile.

Claims (8)

1. A toothed cable (10) comprising: core cable (1); a metal wire (5) helically wound around the above-mentioned core cable at a constant pitch; A yarn (9) comprising a core yarn (9a) and fluff (9b) fixed to the core yarn, the yarn (9) being helically wound around the wire formed by the core cable and the metal wire, In a groove (6) having a side wall surface (7) and a bottom surface (8), it is characterized in that, When the yarn is wound helically in the groove, the pile is arranged radially outward from the core filament so that the pile is in contact with the side wall surface, and the pile has a length protruding outward from the groove. ; The distance from the center of the core filament to the bottom surface is smaller than the distance from the center of the core filament to the tip of the pile before the yarn is wound into the groove. 2. Toothed cable according to claim 1, characterized in that, At least both ends of the yarn (9) are fixed to at least one of the core cable (1) and the metal wire (5). 3. Toothed cable according to claim 1, characterized in that, The above-mentioned yarn (9) is bonded to the above-mentioned core cable (1) without an adhesive. 4. A toothed cable (10) comprising: core cable (1); a metal wire (5) helically wound around the above-mentioned core cable at a constant pitch; A yarn (9) comprising a core yarn (9a) and fluff (9b) fixed to the core yarn, the yarn (9) being helically wound around the wire formed by the core cable and the metal wire, In a groove (6) having a side wall surface (7) and a bottom surface (8), it is characterized in that, The toothed cable is produced by a manufacturing method comprising the following steps, namely, A step of winding the yarn in the groove under tension; A step of softening the above-mentioned core filament by heating while maintaining the above-mentioned tension; A step of cooling the softened core yarn. 5. Toothed cable according to claim 4, characterized in that, The yarn (9) is made of thermoplastic resin, and the melting point of the core yarn (9a) is lower than that of the fluff (9b). 6. Toothed cable according to claim 4, characterized in that, The core yarn (9a) is cooled so that the yarn (9) is hardened while being wound in the groove (6) with the tension applied thereto. 7. A cable device wherein, The cable device has the toothed cable (10) according to any one of claims 1-6. 8. A moving system of a moving body, wherein, The moving system of the moving body has the toothed cable (10) according to any one of claims 1-6.

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