JP7346779B2 - actuator - Google Patents

Description

The present invention relates to, for example, an actuator that linearly moves a slider to which various devices are attached while supplying power to the slider.

In general, actuators that move various devices in a linear manner have a structure in which a slider on which various devices are attached moves along a guide, and is equipped with a drive mechanism to move the slider, as well as a power supply unit fixed to the guide side. A current-carrying cable is provided to connect the slider and the slider (for example, Patent Document 1).

As shown in FIG. 5, the actuator of Patent Document 1 has a box-shaped guide frame 102 that guides a slider 101, and has a pulley and belt 103 as a drive mechanism and a curved power supply cable 104 arranged side by side inside. The belt 103 and the power supply cable 104 are attached to the slider 101. By driving the pulley and belt 103, the slider 101 moves, and the power supply cable 104 is displaced to follow the movement of the slider 101.

JP 2000-318972 (Paragraph 0035-0039, Figure 1)

However, since the actuator of Patent Document 1 is provided with a pulley and a belt that move the slider, and a power supply cable that connects the power supply section and the slider, the actuator tends to increase in size accordingly.

An object of the present invention is to provide an actuator that can be made compact while being equipped with a power supply cable that connects a power supply section and a slider in addition to a pulley and a belt that move a slider.

In order to achieve the above object, an actuator according to the present invention includes a guide rail that is immovably provided with respect to a base member, a slider that is movable along the guide rail, and a drive mechanism that moves the slider. , a current-carrying cable interposed between a fixed part that is immovable with respect to the base member and the slider, and the drive mechanism is connected to a plurality of pulleys supported by the base member and to the pulleys. It consists of a belt that is wrapped around the belt and has a slider attached to it, and a current-carrying cable is placed in the space surrounded by the pulley and belt.

According to the above configuration, since the energizing cable is arranged in a space surrounded by the pulley and the belt, the dead space surrounded by the pulley and the belt can be used as the arranging space for the energizing cable. Thereby, the actuator can be made more compact while being equipped with an energizing cable that connects the power supply section and the slider in addition to the pulley and belt serving as a drive mechanism for moving the slider.

Further, a cable guide may be provided in the space surrounded by the pulley and the belt, along which the energized cable is displaced as the slider moves.

According to this configuration, since the energized cable is routed along the cable guide, the displacement of the energized cable due to the movement of the slider can be limited to a predetermined range, and the energized cable may be displaced to an unexpected range and may damage other equipment or parts. can be prevented from interfering with the

Alternatively, the current-carrying cable may be a belt in which a conductive core wire is embedded in a belt main body made of a non-conductive material.

According to this configuration, since the belt is a power-carrying cable with a structure in which a conductive core wire is buried in the belt body, the power-carrying cable can be bent into a small size, and a small-diameter pulley is used, and the cable is surrounded by the pulley and belt. It is possible to arrange the energizing cable in the dead space while reducing the dead space. Here, in a current-carrying cable having a structure in which a current-carrying core wire is embedded in a belt body, the belt body that covers the core wire can prevent a part of the current-carrying core wire from curving excessively, When the energizing cable is curved to a small extent, damage to the energizing cable due to concentration of the curvature can be prevented.

As described above, according to the present invention, a pulley and a belt are provided to move the slider along the guide rail, and a power cable is arranged in a space surrounded by the pulley and belt to connect the power feeding part and the slider. I have to.

As a result, it is possible to arrange the energized cable using the dead space surrounded by the pulley and belt, and in addition to the pulley and belt that moves the slider, the energized cable that connects the power feeding part and the slider is installed. The actuator can be made more compact.

A perspective view of an actuator according to the present invention Actuator rear view Actuator front view Perspective view of energized cable Perspective view of conventional actuator

EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the actuator based on this invention is demonstrated using drawing.

As shown in FIGS. 1 to 3, the actuator 1 is for direct movement of various devices while supplying power to the various devices via the energizing cable 2, and has a base member 3 and a base member 3. A fixed guide member 4, a guide rail 5 provided integrally with the guide member 4, a slider 6 that is movable along the guide rail 5 and to which various devices are attached, and a drive mechanism for moving the slider 6. toothed pulleys 7 and 8 and a toothed belt 9, the current-carrying cable 2 is interposed between the cable fixing part 10 of the guide member 4 and the slider 6, and is displaced as the slider 6 moves. At the same time, it is arranged along the guide member 4 as a cable guide so as to be located in a space surrounded by the toothed pulleys 7 and 8 and the toothed belt 9.

As shown in FIG. 4, the current-carrying cable 2 is a toothed belt in which a current-carrying core wire 12 such as a steel cord is embedded in a belt body 11 made of a non-conductive material such as a flexible synthetic resin. Ru. The energizing cable 2 made of a toothed belt can be curved with a small radius of curvature, and can prevent a portion of the curved portion 13 from being excessively curved and damaged.

The base member 3 is made of metal, for example, and has a U-shaped cross section with an open back side, and a guide member 4 is attached to the center of the front side, and toothed pulleys 7 and 8 are attached to both ends of the front side. It is being

The guide member 4 is made of metal, for example, and has a U-shaped cross section with an open front side.A guide rail 5 extending over the entire length is fixed to the outer side of the upper part, and the energizing cable 2 is attached to the inner end of the lower part. A cable fixing part 10 is provided for fixing the lower end. The vertical dimensions of the guide member 4 are set to be larger than the diameter of the curved portion 13 of the energizing cable 2, and the energizing cable 2 is placed in the space inside the guide member 4 by being folded in half through the curved portion 13, and the cable fixing portion The lower end fixed at 10 is connected to an external power supply.

The slider 6 is a U-shaped member arranged to sandwich the upper piece of the guide member 4 from the front side, and a slide portion 14 that slides along the guide rail 5 is provided inside the upper piece. A holding plate 15 for holding various devices is provided on the upper side of the slider 6. By overlapping the toothed belt 9 with a spacer 16 that meshes with the teeth of the belt and sandwiching it between the slider 6 and the holding plate 15, the slider 6 can be attached with teeth. It is attached to belt 9. The upper end of the energizing cable 2, which is connected to various devices held by the holding plate 15, is fixed to the inside of the lower part of the slider 6.

The toothed pulleys 7 and 8 are set to have a diameter larger than the vertical dimension of the guide member 4, and the toothed pulleys 7 and 8 and the toothed belt 9 wound around them are arranged so as to run along the guide member 4 and the toothed belt 9. The guide member 4 and the energizing cable 2 are positioned in a dead space surrounding the energizing cable 2 disposed inside and surrounded by the toothed pulleys 7, 8 and the toothed belt 9.

By rotating the toothed pulleys 7 and 8 in the forward and reverse directions, the slider 6 moves back and forth to move various devices in a linear manner, and the energizing cable 2 follows the movement of the slider 6 while moving its curved portion 13. It has become. At this time, since the energizing cable 2 is displaced inside the guide member 4, the energizing cable 2 does not bend significantly and interfere with other equipment or members.

Note that the present invention is not limited to the above-described embodiments, and changes can be made as appropriate within the scope of the present invention. For example, the energizing cable 2 may be placed in a dead space surrounded by the toothed pulleys 7, 8 and the toothed belt 9, and other ordinary cables can be used instead of the toothed belt. Moreover, it is not always necessary to provide the guide member 4.

1 Actuator 2 Current-carrying cable 3 Base member 4 Guide member (cable guide)
5 Guide rail 6 Slider 7 Toothed pulley 8 Toothed pulley 9 Toothed belt 10 Cable fixing part 11 Belt body 12 Core wire 13 Curved part 14 Slide part 15 Holding plate 16 Spacer

Claims (3)

a guide rail that is immovably provided with respect to the base member, a slider that is movable along the guide rail, a drive mechanism that moves the slider, a fixed part that is immovable with respect to the base member, and the slider An actuator comprising: a current-carrying cable interposed between the actuator and the actuator;
The drive mechanism includes a plurality of pulleys supported by a base member, and a belt wound around the pulleys and to which the slider is attached, and the energized cable is provided in a space surrounded by the pulleys and the belt. An actuator characterized in that: is arranged. 2. The actuator according to claim 1, further comprising a cable guide along which a current-carrying cable that is displaced as the slider moves is provided in a space surrounded by the pulley and the belt. 3. The actuator according to claim 1, wherein the current-carrying cable is a belt having a conductive core wire embedded in a belt main body made of a non-conductive material.

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