JPS62246279A - Transmission apparatus between apparatus for transmission between two relatively rotating members - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a transmission device used to transmit electrical signals, optical signals, electric power, etc. between two relatively rotating members.

[Prior art and its problems]

Conventionally, for example, the handle side (rotating body) of a car and the car body side (
When transmitting signals to and from non-rotating bodies (non-rotating bodies), devices such as those shown in FIGS. 5 and 6 are used. This device includes a belt-shaped transmission line 11 wound into a spring shape and a housing 12 that houses the transmission line. Housing 12
is composed of an inner cylinder side housing 13 and an outer cylinder side housing 14.

The inner cylinder side housing 13 includes an inner cylinder part 15 to which the inner part of the spiral transmission line 11 is fixed, and a spiral transmission line 1.
1 and a flange portion 16 that covers one side surface of the main body. The inner end of the spiral transmission line 11 is fixed to the inner cylinder part 15 by a fixing ring 17 (see FIG. 6). Further, the outer cylinder side housing 14 includes an outer cylinder part to which the outer end of the spiral transmission line 11 is fixed, a flange part 19 that covers the other side of the spiral transmission line 11, and an inner cylinder part 15. The shaft portion 20 inserted into the inside of the shaft portion 20 is integrated with the shaft portion 20 . Inner cylinder side housing 13
is rotatable around its shaft portion 20. In other words, the inner cylinder side housing 13 and the outer cylinder side housing 14 can rotate relative to each other within a range that allows the winding of the spiral transmission line 11 to be tightened or loosened.

A lead wire 21 is connected to the inner end of the spiral transmission line 11, and is drawn out through the inner cylinder housing 13. Similarly, a lead wire 22 is connected to the outer end of the spiral transmission line 11, and the outer cylinder side housing 1
4 and is drawn out to the outside. Note that at the inner end of the spiral transmission line 11, the belt-shaped transmission line is bent at a right angle.
It is also possible to have a structure in which it can be pulled out directly from the housing. The same applies to the outer end of the spiral transmission line 11.

This 'JzW is used, for example, as follows. Attach the inner housing 13 to the rotating shaft of the steering wheel and the outer housing 14 to the fixed shaft on the vehicle body, and connect the lead wire 20 to the device on the handle and the lead wire 21 to the device on the vehicle body. . Therefore, in this case, the inner cylinder side housing 13 becomes the rotor, and the outer cylinder side housing 14 becomes the stator.

As a result, regardless of the rotation of the steering wheel, the equipment on the steering wheel side and the equipment on the vehicle body side are connected without any sliding contact parts, and a highly reliable transmission path can be constructed.

The transmission line 11 is an electric wire when transmitting electric signals and electric power, but is an optical fiber-containing transmission line when transmitting an optical signal.

The above example is for use in the steering wheel of a car, but this type of transmission device can be used in any place where it is necessary to transmit electrical signals, optical signals, or electric power between two relatively rotating members. It is something.

By the way, in this type of transmission device, the range in which the rotor can rotate varies from the state a (tightly wound state) in which the transmission line 11 shown in FIG. The transmission line 11 shown in bl is limited to a state in which the transmission line 11 is wound almost tightly around the outer cylindrical part 18 (a loose state). Therefore, when this device is assembled to the handle shaft, for example, the rotation of the handle is limited. It is necessary to match the center position with the rotational center position of the rotor.

For this reason, conventionally, when the transmission device was assembled, the rotational center position of the rotor was determined, the rotor and stator were fixed at that position with a label, and shipped, and sometimes the assembly was carried out without moving the positional relationship. There is. However, if the label is peeled off or torn due to vibration during shipping or transportation, or if the label is carelessly removed, the center of rotation of the rotor cannot be determined at all, and improper assembly may occur. This may cause the transmission line to become unrotatable or cause the spiral transmission line to break.

[Means for solving problems and their effects]

The present invention has the following configuration in order to solve the problems of the prior art as described above.

That is, it includes a belt-shaped transmission line wound in a spiral shape, and a housing that houses the belt-shaped transmission line, and the housing includes an inner cylinder-side housing having an inner cylinder part to which an inner part of the spiral-shaped transmission line is fixed; an outer cylinder side housing including an outer cylinder part to which the outer end of the spiral transmission line is fixed;
The inner and outer housings are relatively rotatable, and in a transmission device in which one of the inner and outer housings is used as a stator and the other is a rotor, the outer periphery of the rotor A flange is formed on the stator, and intermittent teeth are formed on the upper or lower surface of the flange, and the stator rotates by a predetermined angle only when meshing with the intermittent teeth, and when the stator does not mesh with the intermittent teeth, the flange This is characterized in that a gear whose rotation is prevented by a rotor is attached, and a mark for determining the rotor reference position is attached to the gear.

According to the above configuration, the position of the gear mark when the rotor is at the reference position is determined in advance (thereby, it is possible to determine whether the rotor is at the reference position or not based on the position of the mark). .

(Example〕 1 and 2 show one embodiment of the invention.

In these figures, the same parts as those in FIGS. 5 and 6 are given the same reference numerals. Although the inside of the device is not shown, the internal structure is similar to that in FIGS. 5 and 6.

In this transmission device, the inner cylinder side housing 13 is a rotor, and the outer cylinder side housing 14 is a stake. A flange portion 31 is formed on the outer periphery of the flange portion 16 of the inner cylinder side housing 13, and a pair of intermittent teeth 32 are formed on the lower surface of the flange portion 31. It is provided at one location in the circumferential direction. Also, the intermittent teeth 32 and 3 of the flange portion 31
A thin portion 33 is formed in the portion between 2 and 2.

Further, a case body 34 is integrally formed on the outside of the outer cylinder portion 18 of the outer cylinder side housing 14, and a gear 35 is installed in the case body 34. The gear 35 is rotatably supported at the upper end of a column 36 that is parallel to the rotation axis of the inner cylinder housing 13 . This gear 35 has lower teeth 37 and upper teeth 38 at intervals of 45''.
These are alternately formed. This gear 35 is installed so that the tips of two upper teeth 38 of these teeth approach the circumferential surface of the flange 31 and one lower tooth 37 between them enters the lower side of the flange 31. ing. (In the illustrated example, the upper teeth 38 have the same lower half of the heel as the lower teeth 37, but
This lower half can be omitted. ) Therefore, in the state shown in FIGS. 1 and 2, the gear 35 does not rotate even if the inner cylinder housing 13 rotates, for example, in the six directions of the arrows. The inner cylinder side housing 13 further rotates, and the third
When the state shown in the figure fat is reached, one of the intermittent teeth 32 is connected to the lower tooth 37.
and rotates the gear 35.

Next, when the state shown in Fig. 3 fb) is reached, the upper teeth 38 are
Since the gear 35 enters the groove 33, the gear 35 rotates further. Next, when the state shown in Fig. 3 fc) is reached, the intermittent teeth 32 and the gear 35
are disengaged, and even if the inner cylinder side housing 13 rotates, the gear 35 does not rotate. In other words, the gear 35 rotates by 90 degrees every time the inner cylinder housing 13 rotates once.

The gear 35 is used to indicate the rotational position of the inner cylinder housing 13.
is marked with an arrow mark 39. This mark 39 advances by 90'' every time the inner cylinder side housing 13 rotates once. Furthermore, a dot mark 40 is provided on the case body 34 to indicate the reference position of the mark 39 (note that 41 m3
The dot mark 4o is not necessarily necessary if the reference position is set in advance when the point 9 faces in a certain direction).

Assuming that the handle rotates twice in the left and right directions from the center position, and that this device is assembled to the shaft portion of the handle, this device will be installed on the inner cylinder side housing (rotor) 1.
3 is made so that it can rotate a total of four times with respect to the outer cylinder side housing (stator) 12. When assembling, the rotational center position (reference position) of the inner cylinder side housing 13 is
be assembled so that it matches the center position of the handle.

Therefore, when assembling this device, when the inner cylinder side housing 13 is at the rotation center position, assemble it so that the arrow mark 39 and the dot mark 4o coincide as shown in Fig. 3 (bl). The housing 13 is shown in Figure 3 (
From the state of bl, it is possible to make two rotations each in the left and right directions. Therefore, if it is assembled to the shaft of the handle in this state, proper assembly will be achieved.

The above is one embodiment of the present invention. In the above embodiment, the inner cylinder side housing 13 is a rotor, and the outer cylinder side housing 12 is a rotor.
Although the stator is used as the stator, it is also possible to have the opposite configuration. An example is shown in FIG.

In the embodiment shown in FIG. 4, an outer cylinder side housing 12 consisting of an outer cylinder part 18 and a flange part 19 is a rotor, and an inner cylinder part 15, a flange part 16, and an outer wall part 41 located on the outside of the outer cylinder part 18 are connected to each other. The inner cylinder side housing 13 serves as a stator. The outer periphery of the outer housing 12 is formed with a flange 31 (intermittent teeth not shown) similar to the embodiment described above, and the inner housing 13 is provided with a gear 35 similar to the embodiment described above.
is installed. Even with such a configuration, the reference position determination can be performed in exactly the same manner as in the above-described embodiment.

Note that in the above embodiment, the rotor makes two rotations each in the left and right directions from the rotation center position, but for example, if the rotor makes one rotation each in the left and right directions from the rotation center position, the same gear is used to rotate the rotor. If two sets of intermittent teeth are formed under the flange portion at 180° intervals, the center of rotation position can be determined in exactly the same way. In this way, the formation interval of the intermittent teeth or the number of teeth of the gear are appropriately determined based on the total number of revolutions of the rotor relative to the stator. Further, the reference position of the rotor does not necessarily have to be the center of rotation, but may be any convenient position for attachment. The gear mark may be anything that clearly indicates its reference position.

Furthermore, in the above embodiment, the intermittent teeth were formed on the lower side of the flange, but the intermittent teeth were formed on the upper side of the flange, so that the upper teeth of the gear meshed with the intermittent teeth, and the lower teeth approached the circumferential surface of the flange. The rotation of the gear may also be prevented.

〔Effect of the invention〕

As explained above, according to the present invention, a flange is formed on the outer periphery of the rotor, and intermittent teeth are formed on the upper or lower surface of the flange, and the stake is formed at a predetermined angle only when meshing with the intermittent teeth. A gear is installed that is prevented from rotating by the flange when it rotates and does not mesh with the intermittent teeth, and a mark for determining the rotor reference position is provided on the gear, so that the rotor is at the reference position from the position of the mark. It can be determined whether or not. Therefore, the reference position of the rotor will not be lost during installation, and there is an advantage that accidents such as inability to rotate due to incorrect installation and breakage of the spiral transmission line can be prevented.

[Brief explanation of drawings]

1 and 2 are a plan view and a partially cutaway front view of a transmission device according to an embodiment of the present invention, FIG. 3 is a partial plan view showing the operating state of the device, and FIG. The figure is a vertical cross-sectional view showing another embodiment of the present invention, FIGS. 5 and 6 are vertical cross-sectional views and cross-sectional views showing a conventional transmission device, and FIG.
Figures fa) and (bl are cross-sectional views showing the tightly wound state and loosely wound state of the spring-shaped transmission line in the same device, respectively. 11 - Spring-shaped transmission line, 12 - Housing, 13 - Inner cylinder side housing, 14 outer cylinder side housing, 15 - inner cylinder part, 18 - outer cylinder part, 31 - flange part, 32 - intermittent teeth, 33 -
Grooves, 35 - gears, 37 - lower teeth, 38 - upper teeth, 39 - markers. Figure 1

Claims (1)

[Claims] The housing includes an inner cylinder side housing having an inner cylinder portion to which an inner end of the spiral transmission line is fixed, and a housing that houses the belt-shaped transmission line wound in a spiral spiral. an outer cylinder side housing having an outer cylinder part to which the outer end of the shaped transmission line is fixed; the inner cylinder side housing and the outer cylinder side housing are relatively rotatable; In a transmission device in which one of a housing and an outer housing is a stator and the other is a rotor, a flange is formed on the outer periphery of the rotor, and intermittent teeth are formed on the upper or lower surface of the flange, and the stator A gear that rotates by a predetermined angle only when meshing with the intermittent teeth and is prevented from rotating by the flange when not meshing with the intermittent teeth is installed, and a mark for determining the rotor reference position is attached to the gear. A transmission device between two relatively rotating members.