JPH0659654U - Transmission case - Google Patents

Abstract

(57) [Abstract] [Purpose] Prevents chips, wear debris, dust, etc. from being contained in lubricating oil and circulating in the transmission to prevent wear of gears, synchronizers, bearings, etc. . [Composition] A partition 26 having an oil hole 27 on the lower side and arranged in the oil sump 17 of the transmission case main body 11 in the front-rear direction and located in front of the outlet 25 of the oil trough 24, and the partition 26. And a net 28 arranged in the oil hole 27 of 26.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a transmission case used for a transmission.

[0002]

[Background technology]

 In this type of transmission, an oil gutter is provided on the side wall of the transmission case, and the lubricating oil that has been lifted up from the oil sump of the transmission case by gears is conducted from the front side to the rear side of the transmission case by the oil gutter. A structure is adopted in which the first speed gear and the reverse speed gear are lubricated when they are bounced and returned to the oil sump again. The transmission case was used after the chips and foreign substances were cleaned during the manufacturing process, and the wear particles and dust contained in the lubricating oil due to use were removed by oil removal. If the removal of dust, etc. was insufficient and the lubricating oil was circulated repeatedly, there was a problem that wear of gears, synchronizers, bearings, etc. proceeded.

[0003]

[Challenges of device]

 The subject of this invention is to prevent wear such as gears, synchronizers, and bearings by preventing chips, wear debris, and dust from being contained in lubricating oil and circulating in the transmission.・ Providing a case.

[0004]

[Means corresponding to the problem and action thereof]

 This invention has an oil hole on the lower side, and in the front-back direction, a partition that is located in front of the outlet of the oil gutter and is placed in the oil sump of the transmission case body, and the oil hole of that partition. It is a place where chips, wear debris, and dust that are contained in lubricating oil and circulated in the transmission are put on the net to stop the circulation thereof.

[0005]

[Explanation of specific examples]

 Hereinafter, specific examples of the transmission case of the present invention will be described with reference to the drawings. FIG. 1 shows a specific example 10 of the transmission case of the present invention which is applied to the transmission of the sixth forward speed and the first reverse speed of a truck. This transmission case 10 is manufactured in a box shape from the front end wall 12, the rear end wall 13, both side walls 14 and 15, and the bottom wall 16 with the upper part opened, and the bottom part is used for the oil sump 17. The transmission case main body 11, an oil gutter 24 integrally formed on one of both side walls 14 and 15 of the transmission case main body 11, and an oil hole 27 below the oil gutter 24 are arranged in the oil sump 17. It is embodied by a partition 26 and a net 28 arranged in the oil hole 27.

The transmission case body 11 is arranged with a main shaft, a counter shaft, and a clutch shaft as usual, and the counter shaft is gear-coupled to the clutch shaft. The counter shaft is provided with gears 1 to 5 and reverse, and its main shaft is geared selectively to gears of the counter shaft. Since high speed and reverse speed gears are supported, bearing holes 20 and 21 for supporting the front end of the counter shaft and the clutch shaft, respectively, are opened in the front end wall 12, and the rear of the main shaft is also supported. Bearing holes 22 and 23 for supporting the ends and the rear end of the counter shaft, respectively, are opened in the rear end wall 13.

The oil gutter 24 is formed with the outlet 25 corresponding to the first speed gear of the main shaft, and is generally formed on the inner wall surface of the one side wall 15 at a downward inclination toward the outlet 25. Then, the fourth and fifth gears of the counter shaft receive the lubricating oil scraped up from the oil sump to guide it from the front to the rear of the transmission case body 11, and then the outlet 25 thereof. The lubricating oil lubricates the gears of the first speed and the reverse speed while returning from the oil sump 17 to the oil sump 17.

The partition 26 is located in front of the outlet 25 of the oil gutter 24 in the front-rear direction and is arranged in the oil sump 17 of the transmission case body 11. More specifically, the oil sump 17 is projected between the gears of the first speed and the second speed to the bottom wall 16 of the transmission case body 11, and the oil sump 17 is moved to the front oil sump portion 18 and the rear oil sump portion. Lubricating oil that is divided into parts 19 and flows from the outlet 25 of the oil gutter 24 to lubricate the gears of the first speed and the reverse speed is stored in the rear oil sump part 19 and then the lubricating oil accumulated in the rear oil sump part 19 The oil flows into its forward oil sump portion 18 through its oil hole 27.

In the transmission using the transmission case 10 manufactured in such a structure, lubricating oil is pumped up by the fourth and fifth gears of the counter shaft and the oil The gutter guides the transmission case 10 from the front to the rear, flows from the outlet 25 to lubricate the first and reverse speed gears, and then flows to the rear oil sump portion 19. The lubricating oil flowing to the rear oil sump portion 19 flows through the oil hole 27 of the partition 26 to the front oil sump portion 18. At that time, chips, wear debris, dust, etc. contained in the lubricating oil are applied to the mesh 28, and they are contained in the lubricating oil and further circulated in the transmission repeatedly. Were prevented, resulting in wear on gears, synchronizers, and bearings.

As will be apparent from the identified embodiments of this invention as previously described with reference to the drawings, those of ordinary skill in the art to which this invention belongs, The subject matter of this invention derives from the nature and substance of the invention and is readily embodied in other aspects which are objectively recognized as being internal. Of course, the contents of this device are indispensable for the establishment of the device according to the subject of the device.

[0011]

[Benefits of the device]

 As can be understood from the above, the transmission case of the present invention has an oil hole on the lower side, and is located in the front of the outlet of the oil gutter in the front-rear direction and arranged in the oil sump of the transmission case body. The transmission case of the present invention is provided with a partition, which is made up of oil, and chips, wear particles, and dust contained in the lubricating oil. At the same time, it is separated from the lubricating oil by the mesh, and it is prevented that they are contained in the lubricating oil and circulate in the transmission to prevent the wear of gears, synchronous devices, bearings, etc. As a result, it is very useful and practical for transmission.

[Brief description of drawings]

FIG. 1 is a perspective view showing a specific example of a transmission case of the present invention applied to a 6-forward and 1-reverse transmission of a truck.

[Explanation of symbols]

 26 partition 27 oil hole 28 mesh

Claims (1)

[Scope of utility model registration request] 1. A partition having an oil hole below and located in a front side of an outlet of the oil gutter in the front-rear direction and arranged in an oil sump of the transmission case body,
A transmission case with a net placed in the oil hole of the partition.