CN209818700U - Volute type gearbox shell - Google Patents

Abstract

The utility model belongs to the technical field of the auto-parts technique and specifically relates to a spiral case formula gearbox shell, which comprises a housin, be equipped with the cap on the casing, seted up four jacks on the cap, the cooperation of pegging graft between spliced pole and the jack, nut fixed connection through spliced pole top threaded connection between cap and the casing, the bottom surface of cap closely bonds and has had the acoustic celotex board, and the through-hole has all been seted up to the central position of cap and acoustic celotex board, and the outside of acoustic celotex board is equipped with the rubber pad, closely bonds between rubber pad and the cap, the utility model discloses a divide into casing and cap with the gearbox shell to set up mounting and shock-absorbing member in the casing, thereby can cushion the shock attenuation to the gearbox, set up the acoustic celotex board on the cap, thereby eliminate the noise that produces, finally reached and reduced.

Description

Volute type gearbox shell

Technical Field

The utility model relates to the technical field of auto-parts, specifically be a spiral case formula gearbox housing.

Background

With the progress of society, automobiles become common tools for riding instead of walk, and a gearbox in the automobiles is often accompanied with noise in the using process, so that the driving comfort degree of a driver is affected.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a spiral case formula gearbox shell to solve and provide the problem among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a volute type gearbox shell comprises a shell body, wherein a shell cover is arranged on the shell body;

the shock absorption device is characterized in that a cavity is formed in the shell, connecting columns are welded at four corners in the cavity tightly, threads are arranged at the top ends of the connecting columns, two pairs of annular bulges are welded on the connecting columns tightly, two fixing pieces are arranged between the two connecting columns which are positioned on the same side, each fixing piece comprises an elastic rod, connecting blocks are welded at two ends of each elastic rod tightly, each connecting block is embedded between the two annular bulges, a round hole is formed in each connecting block, each connecting column penetrates through the round hole, four reinforcing ribs which are perpendicular to each other in position are arranged at the bottom end of the inner wall of the shell, two shock absorption pieces which are symmetrical in position are arranged in the shell, the shock absorption pieces are tightly bonded with the inner wall of the bottom end of the shell, each shock absorption piece comprises a spring piece;

four jacks have been seted up on the cap, the cooperation of pegging graft between spliced pole and the jack, nut fixed connection through spliced pole top threaded connection between cap and the casing, the bottom surface of cap closely bonds and has the acoustic celotex board, the through-hole has all been seted up to the central point of cap and acoustic celotex board, the outside of acoustic celotex board is equipped with the rubber pad, closely bond between rubber pad and the cap.

Preferably, the sum of the thicknesses of the cavity and the cover is less than the length of the connecting column.

Preferably, the thickness of the joint block is equal to the distance between two adjacent annular protrusions.

Preferably, the thickness of the elastic rod is smaller than the distance between the connecting column and the adjacent cavity side wall.

Preferably, the elastic sheet is L-like, and the elastic sheet and the reinforcing ribs are not in contact with each other.

Preferably, two ends of the return spring are respectively and tightly bonded with the horizontal section of the elastic sheet and the bottom end of the inner wall of the shell.

Preferably, the thickness of the rubber pad is greater than the thickness of the sound insulation board.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a divide into casing and cap with the gearbox shell to set up mounting and shock attenuation piece in the casing, thereby can cushion the shock attenuation to the gearbox, set up the acoustic celotex board on the cap, thereby eliminate the noise that produces, finally reached and reduced and eliminated the effect that the gearbox produced the noise in start-up work.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is an exploded view of the middle housing of the present invention;

FIG. 3 is a structural diagram of the connecting column of the present invention;

FIG. 4 is a structural diagram of the fixing member of the present invention;

FIG. 5 is a structural diagram of the shock absorbing member of the present invention;

fig. 6 is a structural diagram of the housing cover of the present invention.

In the figure: the shell comprises a shell body 1, a cavity 11, a connecting column 12, an annular protrusion 121, a fixing piece 13, an elastic rod 131, a connecting block 132, a round hole 133, a reinforcing rib 14, a shock absorption piece 15, an elastic piece 151, a return spring 152, a shell cover 2, a jack 21, a sound insulation plate 22, a through hole 23 and a rubber pad 24.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Referring to fig. 1-6, the present invention provides a technical solution:

a volute type gearbox shell is shown in figure 1 and comprises a shell body 1, wherein a shell cover 2 is arranged on the shell body 1.

As shown in fig. 2-5, a cavity 11 is provided in the housing 1, connecting columns 12 are tightly welded at four corners in the cavity 11, threads are provided on the top ends of the connecting columns 12, two pairs of annular protrusions 121 are tightly welded on the connecting columns 12, two fixing members 13 are provided between the two connecting columns 12 located on the same side, each fixing member 13 includes an elastic rod 131, joining blocks 132 are tightly welded at two ends of each elastic rod 131, the joining blocks 132 are embedded between the two annular protrusions 121, round holes 133 are provided on the joining blocks 132, the connecting columns 12 penetrate through the round holes 133, four reinforcing ribs 14 perpendicular to each other are provided at the bottom end of the inner wall of the housing 1, two shock absorbing members 15 symmetrical in position are provided in the housing 1, the shock absorbing members 15 are tightly bonded with the inner wall of the bottom end of the housing 1, each shock absorbing member 15 includes a spring.

In this embodiment, the sum of the thicknesses of the cavity 11 and the housing cover 2 is less than the length of the connecting column 12, so that the connecting column 12 penetrates through the jack 21 on the housing cover 2 and the threaded section on the connecting column 12 to protrude out of the housing cover 2 after the housing cover 2 covers the housing 1, and then the housing cover 2 can be limited and fixed by the nut screws on the connecting column 12.

In this embodiment, the thickness of the engaging block 132 is equal to the distance between two adjacent annular protrusions 121, so that the two adjacent annular protrusions 121 can limit and fix the engaging block 132, thereby avoiding the problem of looseness of the fixing member 13 on the connecting column 12.

In this embodiment, the thickness of the elastic rod 131 is smaller than the distance between the connecting column 12 and the side wall of the adjacent cavity 11, so that after the gearbox in the cavity 11 shakes, the gearbox can be buffered under the elastic force of the elastic rod 131, and the position of the gearbox is kept fixed.

In this embodiment, the elastic sheet 151 is L-like, and the elastic sheet 151 and the reinforcing ribs 14 are not in contact with each other, so that the horizontal section of the elastic sheet 151 can be prevented from being in contact with the reinforcing ribs 14, and the horizontal section of the elastic sheet 151 cannot deform.

In this embodiment, return spring 152's both ends closely bond between the inner wall bottom of the horizontal segment of shell fragment 151 and casing 1 respectively to under return spring 152's elastic force effect, after the gearbox rocks from top to bottom, gearbox extrusion shell fragment 151, shell fragment 151 takes place to deform and extrudes return spring 152, under the combined action of return spring 152 and shell fragment 151 self elasticity, the realization is to the gearbox of rocking carrying out the effect of buffering.

As shown in fig. 6, four insertion holes 21 are formed in the case cover 2, the connection columns 12 and the insertion holes 21 are in insertion fit, the case cover 2 and the case 1 are fixedly connected through nuts connected with the top ends of the connection columns 12 in a threaded manner, the sound insulation board 22 is tightly bonded to the bottom surface of the case cover 2, through holes 23 are formed in the case cover 2 and the center of the sound insulation board 22, a rubber pad 24 is arranged on the outer side of the sound insulation board 22, and the rubber pad 24 is tightly bonded to the case cover 2.

In this embodiment, the thickness of rubber pad 24 is greater than the thickness of acoustic celotex board 22 to can avoid the gearbox to rock the back from top to bottom, the condition of striking acoustic celotex board 22 takes place, and because the bottom surface of cap 2 closely bonds and has acoustic celotex board 22, thereby can carry out the effect of eliminating to the noise that the gearbox produced.

When the volute type gearbox shell of the embodiment is used, firstly, when the gearbox vibrates, because the elastic rods 131 at two sides in the shell 1 can limit and fix the gearbox, thereby reducing the shaking of the gearbox in the horizontal direction, and when the two elastic sheets 151 at the bottom end position in the shell 1 shake up and down along with the gearbox, the gear box presses the elastic piece 151, the elastic piece 151 deforms and presses the return spring 152, under the combined action of the return spring 152 and the elastic force of the elastic sheet 151, the effect of buffering the wobbling gearbox is achieved, due to the combined action of the fixing piece 13 and the damping piece 15, the effect of buffering the gearbox is realized, the position of the gearbox is kept fixed, the possibility of generating noise due to the shaking of the gearbox is reduced, and because the bottom surface of the cover 2 is closely adhered with the baffle plate 22, the noise generated by the gearbox can be eliminated.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (7)

1. A volute gearbox housing comprising a casing (1), characterized in that: a shell cover (2) is arranged on the shell (1);

the improved structure is characterized in that a cavity (11) is arranged in the shell (1), connecting columns (12) are welded at four corners in the cavity (11) tightly, threads are arranged at the top ends of the connecting columns (12), two pairs of annular bulges (121) are welded at the connecting columns (12) tightly, two fixing pieces (13) are arranged between the connecting columns (12) on the same side, each fixing piece (13) comprises an elastic rod (131), connecting blocks (132) are welded at two ends of each elastic rod (131) tightly, the connecting blocks (132) are embedded between the two annular bulges (121), round holes (133) are formed in the connecting blocks (132), the connecting columns (12) penetrate through the round holes (133), four reinforcing ribs (14) which are perpendicular to each other are arranged at the bottom end of the inner wall of the shell (1), and two shock absorbing pieces (15) which are symmetrical in position are arranged in the shell (1), the damping piece (15) is tightly adhered to the inner wall of the bottom end of the shell (1), the damping piece (15) comprises an elastic sheet (151), and a plurality of reset springs (152) are fixedly connected to the elastic sheet (151);

four jacks (21) have been seted up on cap (2), peg graft the cooperation between spliced pole (12) and jack (21), nut fixed connection through spliced pole (12) top threaded connection between cap (2) and casing (1), the bottom surface of cap (2) closely bonds and has acoustic celotex board (22), through-hole (23) have all been seted up to the central point position of cap (2) and acoustic celotex board (22), the outside of acoustic celotex board (22) is equipped with rubber pad (24), closely bond between rubber pad (24) and cap (2).

2. The volute gearbox housing of claim 1, wherein: the sum of the thicknesses of the cavity (11) and the shell cover (2) is less than the length of the connecting column (12).

3. The volute gearbox housing of claim 1, wherein: the thickness of the connecting block (132) is equal to the distance between two adjacent annular bulges (121).

4. The volute gearbox housing of claim 1, wherein: the thickness of the elastic rod (131) is smaller than the distance between the connecting column (12) and the side wall of the adjacent cavity (11).

5. The volute gearbox housing of claim 1, wherein: the elastic sheet (151) is L-shaped, and the elastic sheet (151) is not in contact with the reinforcing ribs (14).

6. The volute gearbox housing of claim 1, wherein: two ends of the return spring (152) are respectively and tightly bonded with the horizontal section of the elastic sheet (151) and the bottom end of the inner wall of the shell (1).

7. The volute gearbox housing of claim 1, wherein: the thickness of the rubber pad (24) is larger than that of the sound insulation board (22).