JPH045009Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an attachment structure for a drive cable and an instrument (for example, a speedometer) used in a vehicle such as an automobile.

Conventionally, the instrument 1 shown in Fig. 1 and the vehicle instrument drive cable (hereinafter referred to as the drive cable) shown in Fig. 2 were used.
are connected, resulting in the connection state shown in FIG.

In FIG. 1, 1 indicates an instrument, 2 a drive shaft through which the rotation of the drive cable is transmitted, and 3 a synthetic resin bush fixed to the drive shaft 2. 4 is the drive cable outer 14 in FIG.
This is an attachment inserted into the casing 5 which is fixed by welding to the instrument 1.

FIG. 2 shows the instrument side end of the drive cable, and the support bracket 11 is a synthetic resin material attached to the instrument panel 12, and includes a casing 5, a grommet 6, and a spring 8. The guide 7 made of synthetic resin is slidably fitted on the outer periphery of the casing 5 and has a plurality or single elastic engagement protrusion 15 on the outer periphery, and has a plurality or single set of elastic engagement protrusions 15 formed on the outer periphery of the casing 5. It is held by fitting into the square hole 16. Two square holes 16 are arranged in the axial direction corresponding to the amount of sliding of the guide 7. Further, the protrusion 15 is pushed up by the attachment 4 of the meter 1 being inserted into the guide 7, and the guide 7 becomes able to slide in the axial direction. Grommet 6 made of elastic material such as rubber
has an annular groove 17 on the outer periphery, a semicircular projection 18 formed on the support bracket 11 engages with this groove 17, and the casing 5 and spring 8
Supports the drive cable itself through the bracket 1
It is fixed at 1.

Therefore, when the instrument 1 is inserted into the drive cable shown in FIG. 2, the attachment 4 pushes up the projection 15 of the guide 7, and the slope of the projection 15 interferes with the slope of the square hole 16 of the casing 5.
The guide 7 slides against the casing 5 while generating an appropriate sense of moderation, and the attachment 4 of the instrument 1
is inserted into the casing 5. Furthermore, when the instrument 1 is attached to an instrument panel (not shown), the spring 8 is deflected, that is, the drive cable itself moves toward the transmission side, thereby preventing the instrument 1 and the drive cable from shaking in the axial direction. This state is shown in FIG. In this figure 3, 1
0 is a rubber bushing 13 is a flat washer. On the other hand, an annular protrusion 1 formed on the casing 5
As shown in FIG. 2, before the instrument 1 is inserted, the 9 and 20 come into contact with the semicircular arc-shaped protrusion 21 and the plurality of ribs 22 formed on the support bracket 11, and the casing 5 is connected to the drive cable. This prevents it from tilting due to applied external force. Therefore, when the instrument 1 and the drive cable are connected to the state shown in FIG. 22 only. Furthermore, since the protrusion 20 is a thin piece of resin, it easily sinks into the rib 22 of the support bracket 11.
Therefore, even if the positional relationship between the instrument 1 and the instrument panel 12 shifts, there is no misalignment of the axes of the drive cable and the instrument 1, and no undue force is applied to the casing 5.

According to such a conventionally known structure, when the instrument 1 is reassembled, first the instrument 1 is taken out from the instrument panel (not shown), and the end of the drive cable on the meter side is in the state shown in FIG. 4. Therefore, when inserting the meter 1 into the drive cable again, unless the guide 7 is returned to the state shown in Fig. 2 by the operator's hand, the moderation when inserting the meter 1, which is the original connection function, will be lost. and when connected again, meter 1
The disadvantage is that the touchment 4 interferes with the rotary key 9 of the drive cable.

Therefore, in order to eliminate the above-mentioned drawbacks, the present invention provides a one-touch plug-in type vehicle instrument drive cable that allows the instrument to be removed from the drive cable and the guide to be reset to the state shown in Fig. 2 at the same time as the instrument 1 is removed from the instrument panel. The purpose is to provide a connection structure.

The present invention will be described below with reference to embodiments shown in the drawings. In one embodiment shown in FIGS. 5 to 8,
An annular groove 23 is formed on the outer periphery of the attachment 4 on the side of the tip 26 shown in FIG. 6th
7 and 8, a plurality or single elastic engagement projections 24 are provided on the outer periphery of the guide 7 on the cable side, and a plurality or single elastic engagement protrusion 24 is provided on the outer periphery of the casing 5 in the axial direction. It fits into the rectangular elongated hole 25 for escape. This elongated hole 25 has an axial length that is greater than the amount of sliding of the guide 7. The above points are the differences from the conventional one, and the shapes of the other components are the same as the conventional one shown in FIGS. 1 to 4.

The content of the present invention in the above configuration will be explained. Attachment 4 having an annular groove 23 shown in FIG.
When the meter 1 including the meter 1 is inserted into the guide 7 at the meter side end of the drive cable shown in FIG. ,
When the attachment 4 is further inserted into the guide 7, the protrusion 24 of the guide 7 is inserted into the attachment 4.
It fits into the groove 23 of. On the other hand, the moderation projection 15 of the guide 7 is pushed up by the tip 26 of the attachment 4. Then, further instrument 1
When inserted toward the casing 5, as described in the explanation of the conventional structure, a moderate sense of moderation is generated, and the seventh
The state shown in the figure will be reached.

Therefore, if it is necessary to replenish instrument 1, etc.,
First, when taking out the instrument 1 from the state shown in FIG. 7, the groove 23 of the attachment 4 and the engagement protrusion 24 of the guide 7 are engaged, so as the attachment 4 moves, the guide 7 also moves to the state shown in FIG. 6. It slides towards the front. Immediately before the attachment 4 is completely removed from the drive cable, the moderation protrusion 15 of the guide 7 is inserted into the square hole of the casing 35.
6, and the movement of the guide 7 is completed. Then, since the engagement protrusion 24 of the guide 7 has elasticity, it is pushed up by the tip 26 of the attachment 4, and the groove 23 and the engagement protrusion 24 of the guide 7 are disengaged from each other.

Due to the component configuration described above, when inserting or removing the instrument 1 from the drive cable, the attachment 4 of the instrument 1
The guide 7 can be slid synchronously in the cable axis direction, which has the excellent effect of eliminating the need for the operator to manually shift the guide 7.

Further, the following contents can be considered as other embodiments of the present invention. In Figures 9 to 12, meter 1
The guide 7 includes an attachment 4 having an annular groove 34 on its outer periphery on the proximal side, and an elastic engagement protrusion 31 is formed on the outer periphery on the distal end side of the guide 7. When the drive cable is connected, the state shown in FIG. 11 is achieved. When attempting to take out the instrument 1 from the drive cable, the elastic engagement protrusion 31 of the guide 7 is engaged with the groove 34 of the attachment 4, so as the attachment 4 moves, the guide 7 also moves at the same time as shown in FIG. It slides toward the state of . Immediately before the attachment 4 is completely removed from the drive cable, the protrusion 15 of the guide 7 locks into the square hole 16 of the casing 5, and the movement of the guide 7 is completed. Then, since the engagement protrusion 31 of the guide 7 has elasticity, the attachment 4
The groove 34 and the engagement protrusion 31 of the guide 7 are disengaged from each other. In addition, when the meter 1 and the drive cable are connected as shown in FIG. 11, in order to prevent the engagement protrusion 31 of the guide 7 from interfering with the meter side tip of the casing 5, a It is necessary to provide an escape hole consisting of the notch 33. The embodiments having the above component configurations can also exhibit the same functions as described above.

As described above, in the present invention, an escape hole is formed on the outer periphery of the casing fixed to the end of the drive cable on the instrument side, and a guide fitted slidably on the outer periphery of the casing is passed through the escape hole. An elastic engagement protrusion that protrudes toward the inner circumference is formed, and an annular groove is formed in the attachment provided on the instrument side to which the engagement protrusion engages, making it easy to insert or remove the instrument from the drive cable. Another advantage is that the instrument attachment and the guide move synchronously in the cable axis direction, eliminating the need for the operator to manually shift the guide, improving work efficiency.

[Brief explanation of the drawing]

Figures 1 to 3 are a cross-sectional side view of the main part of the meter side in the conventional structure, a cross-sectional front view of the main part of the meter-side end of the drive cable, and a longitudinal cross-sectional view of the overall configuration in the connected state, and Figure 4 is the above A partially sectional front view showing the state of the meter side end of the drive cable after removal; FIGS. 5 to 7 are cross sectional side views of the main part of the meter side in an embodiment of the structure of the present invention; and FIGS. 5 to 7 show the meter side end of the drive cable. 8A and 8B are perspective views of the casing and guide in the above embodiment, and FIGS. 9 to 11 are views of other structures of the present invention. FIG. 12A is a cross-sectional side view of the main part of the instrument side in the embodiment, a front cross-sectional view of the main part of the meter-side end of the drive cable, and a vertical cross-sectional view of the overall configuration in the connected state,
B is a perspective view of the casing and guide in the other embodiment. 1... Instrument, 4... Attachment, 5... Casing, 7... Guide, 23, 34... Annular groove, 24, 31... Engagement protrusion, 25... Relief square length forming escape hole. Hole, 33... Notch forming an escape hole.

Claims (1)

[Scope of Claim for Utility Model Registration] A casing fixed to the instrument-side tip of a drive cable and having an escape hole extending in the axial direction on its outer periphery, and a casing slidably fitted onto the outer periphery of the casing and said escape hole. a guide having an engaging protrusion that protrudes to the inner circumference through the hole and has elasticity to move in the axial direction within the hole; and an annular groove provided on the instrument side and having an annular groove on the outer circumference in which the protrusion engages. an attachment having an attachment, wherein when the attachment is removed from the casing, the guide slides on the casing to a state before the attachment is attached due to engagement between the protrusion of the guide and the groove. Instrument drive cable mounting structure.