JPS58170965A - Liquid measure indicating structure of speed change gear - Google Patents

Abstract

PURPOSE:To confirm the quantity of lubricating oil from the upper limit to the lower limit by disposing a shelf portion for indicating the quantity of lubricating oil stored in a main body of a speed change gear on the inside of an opening hole of the main body where a speed meter pinion is detachably loaded. CONSTITUTION:A speed meter pinion 14 is rotatably supported on a holder 16 by a pinion shaft 15 and engaged with a drive gear 18. The holder 16 is fixed by a bolt 19, with the shaft portion 16a thereof fitted in a hole 8 of a case 5. The side wall surface of a chamber 7 of the case 5 is provided with a shelf portion 9 which is a mark for indicating the quantity of lubricating oil stored in a main body of a speed change gear. The shelf portion 9 includes an upper shelf surface 10, an middle shelf surface 11 and a lower shelf surface 12. Therefore, a speed meter detecting portion comprising the speed meter pinion 14 and so on is pulled out upward to open the hole 8 so as to see the shelf portion 9 which is a mark.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fluid level display structure for a transmission mounted on a vehicle such as an automobile.

An example of a conventional transmission fluid level display structure is shown in FIG. 1. This figure shows a transmission for a transverse engine front drive vehicle, and this transmission is composed of a transmission 1, a final transmission 2, and a differential gear. 3 is a filler plug for closing the hole opened on the side of the casing 4 of Tranlamib John 1. The height position of the hole in which the filler plug 6 is installed is set at a position where the lubricant begins to overflow from the hole when an appropriate amount of lubricant is contained in the transmission.

Although not shown, some transmissions have an oil level gauge installed in the hole, and the oil level gauge can be used to check whether the oil level is adequate or not.

However, in such a conventional transmission fluid level display structure, when using the filler plug 3 shown in FIG. Moreover, when the lubricating fluid overflows, there is a problem that not only the outside of the casing 4 of the transmission 1 but also the operator's fingers and clothing become dirty with the lubricating fluid. Further, when an oil level gauge is used, there is a problem that it is uneconomical because not only the oil level gauge is required but also an assembly process is required.

This invention was made by focusing on such problems with the conventional technology, and a speedometer binion is removably attached to an upwardly opening hole provided in a transmission body in which a transmission gear system is built. In the transmission, the speedometer binion can be fixed by providing a mark integrated with the transmission body for displaying the amount of lubricant contained in the transmission body inside the hole of the transmission body. When removed, it is possible to check the upper and lower limits of the appropriate amount of lubricating fluid in the transmission body, or the range from upper to lower limits.
The purpose is to solve the above problems.

The present invention will now be explained based on the drawings.

FIGS. 2 to 7 show an embodiment of the present invention, and are diagrams relating to a transmission used in connection with a side engine of a front-engine front-wheel drive vehicle.

First, to clarify the configuration, 1 shown in Fig. 2 is a final drive equipped with a transmission and a 2id differential gear.
and final drive 2 constitute a transmission. The transmission 1 and the final drive 2 are constructed by incorporating a rapid gear system in a transmission body formed by joining a transmission casing 4 and a clutch housing 5.The clutch housing 5 has an upper surface. Flat wide edge 6
In addition to providing a fence 7 inside this wide edge part B. The upper surface ζ of the wide edge portion 6 is provided with a hole 8 passing through it vertically, so that the side wall surface of the chamber 7 can be seen through the hole 8.

On the side wall surface of the chamber 7, a shelf 9 serving as a mark for displaying the amount of lubricant contained in the transmission body is integrally provided with the clutch housing 5. This shelf section 9 has an upper shelf surface 10, a middle shelf surface 11, and a lower shelf surface 12. In addition, the lower surface 12 is set at the lower limit position of the appropriate range of lubricant amount, and the middle shelf surface 11 is set at the lower limit position of the appropriate range of the lubricant amount. Therefore, the most suitable amount of lubricant is injected with the middle shelf surface 11 as the target, and the amount of the lubricant is such that the middle shelf surface 11 and the top surface of the lubricant match. It is.

FIG. 7 shows a state in which the speedometer pinion 14 is installed in the hole 8 of the transmission body. The speedometer pinion 14 is fitted to the lower end of the pinion shaft 15 by serrations or the like, and is integrally fixed by caulking. Binion shaft 15 is connected to holder 1
6 and is rotatably supported by II provided on its outer periphery.
Movement in the axial direction is restricted by a pin 17 that engages with 15a. Then, insert the speedometer binion 141q11 into the chamber Z through the hole 8, and insert the shaft part 16a of the holder 16 into the hole 8 (while fitting it, insert the speedometer binion 14 into the drive gear attached to the transmission gear system. 8, and in this state, the holder 16 is fixed to the clutch housing 5 with bolts 19.

At the outer protruding end of the pinion shaft 15,
A speedometer cable (not shown) is connected.

Next, the effect will be explained.

First, the bolts 19 fixing the holder 16 are removed, and the speedometer detecting section consisting of the speedometer pinion 14 and the like is pulled upward to open the hole 8. By looking through the hole 8 at a shelf 9 serving as a marker provided inside the transmission body, the amount of lubricant in the transmission body can be recognized by all parties. Then, the upper surface of the lubricant is the upper shelf surface 10
When the amount of lubricating fluid is between the lower shelf surface 12 and the lower shelf surface 12, it can be seen that the amount of lubricating fluid is within an appropriate range. In particular, when the upper surface of the lubricating fluid is aligned with the middle shelf surface 11, it can be seen that the most suitable amount of lubricating fluid is stored in the transmission FM main body, but the liquid level is higher than the upper shelf surface 10. If it is above, you can know that there is a large amount of lubricating fluid, and if it is below that liquid level or the lower surface 12, you can know that the amount of lubricating fluid is insufficient. I can do it.

FIG. 8 shows a second embodiment of the invention.

In this embodiment, an upper protrusion 20 indicating the upper limit of the lubricant l and one protrusion 21 indicating the lower limit thereof are attached to the side wall surface of the chamber 7 formed inside the wide edge part B of the clutch housing 5. It is formed integrally with the protrusion, and the upper and lower protrusions 20°21 allow ■
It is a coffin with a scale-like sign indicating the cry of synovial fluid. Even with this configuration, it is possible to obtain the same effects as in the above embodiment.

FIG. 9 shows a third embodiment of the invention.

In this embodiment, the shelf section 60 serving as the sign is constructed by providing several shelf surfaces in the same manner as the shelf section 9 shown in the 17th) embodiment, but the difference from the above embodiment is that , set a constant liquid volume for each stage, and
This allows you to easily see how much lubricant liquid has decreased or increased relative to the target lubricant amount.

Therefore, for example, if all the lubricant is on the shelf 31 on the bottom floor, and you want to replenish the amount of lubricant up to the shelf 62 on the top floor, how much lubricant should be added to it?
You can easily judge whether it is appropriate to enter the tl. That is, by multiplying the number of stages between both shelf surfaces 30 and 31 by the amount of liquid per stage, the required volume can be calculated. Even with this configuration, the same effects as in the first embodiment can be obtained.

Note that the shelves 9, 30 and the projections 20.21 may be provided on the transmission 10 casing 4, and in this case, the wide edge 6, the chamber 7 and the hole 8 are also f*'
7- Must be installed on plug 4.

As explained above, in this invention, 5. The transmission body in which the transmission gear system is built-in is provided with a hole that opens upward, and the transmission gear is inserted through this hole and meshes with the transmission gear system within the transmission body, and the transmission gear system is inserted into the transmission body. In a transmission in which a speedometer pinion that is driven and detects vehicle speed from its rotational speed is removably installed in the hole, the transmission body is used to display the amount of lubricant contained in the transmission body. We have decided to install a sign that is integrated with the area. 75: Can easily confirm at a glance visually.

Moreover, since the hole where the speedometer pinion is installed is open upwards, it is often necessary to jack up the vehicle. This has the effect of allowing confirmation.Also, since the sign is integrated with the transmission body, parts such as oil level gauges and filler plugs that were conventionally used to check the fluid level can be removed. This not only makes it possible to discard the used JTI, but also has the effect of eliminating the need to drill holes for attaching these parts.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a conventional transmission fluid level display structure, FIGS. 2 to 7 are diagrams showing an embodiment of the present invention, and FIG. 2 is a plan view of the transmission. Fig. 3 is an E-side view of the clutch housing, Fig. 4 is a rear view of the clutch housing with some parts omitted, Fig. 5 is a sectional view of V-V ffN in Fig. 4, and Fig. 6 is a cross-sectional view of the clutch housing. figure,
Fig. 7 is a clear view showing the speedometer pinion assembled, Fig. 8 is a perspective view showing the second embodiment of the invention, and Fig. 9 is a third embodiment of the invention. FIG. 1... Transmission, 2... File drive, 4... Transmission casing, 5... Clutch housing, 6... Wide edge, 7... Chamber, 8...
Hole, 9...shelf (sign), 10...upper shelf surface, 11...
Middle shelf surface, 12...Lower shelf surface, 14.Speedometer pinion, 20.Upper protrusion () 1j1π'), 21...Lower protrusion (sign), 30.Shelf part (ff fracture), 31, 32 ...
Tanabe Patent Applicant Nissan Motor Co., Ltd. Agent Patent Attorney Tetsuya Mori Patent Attorney Yoshiaki Naito

Claims (1)

[Claims] A transmission body (・ζ) with a built-in transmission gear system is provided with a hole that opens into the transmission body, and is inserted through this hole and meshes with the transmission gear system within the transmission body, and is connected to the transmission gear system. , in a transmission in which a speedometer pinion that is driven and detects the vehicle speed from its rotational speed is removably attached to the hole, a lubricant contained in the transmission body is placed inside the hole of the transmission body. A fluid amount display structure for a shift →, characterized in that a mark is provided integrally with the transmission body for displaying the amount.