CN218934563U

CN218934563U - Low-noise balance shaft housing assembly

Info

Publication number: CN218934563U
Application number: CN202221633780.XU
Authority: CN
Inventors: 曾根
Original assignee: Zhejiang Hongding Auto & Motor Parts Co ltd
Current assignee: Zhejiang Hongding Auto & Motor Parts Co ltd
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2023-04-28
Anticipated expiration: 2032-06-28

Abstract

The utility model provides a low-noise balance shaft housing assembly, which comprises an upper housing and a lower housing, wherein a sound insulation backing plate is fixedly connected inside the upper housing, a sound insulation interlayer is fixedly connected inside the lower housing, a sound insulation rubber mat is fixedly connected above the upper housing, a transmission bin and a shaft body bin are arranged inside the upper housing and the lower housing, a transmission shaft is movably connected inside the transmission bin, one end of the transmission shaft is fixedly connected with a balance shaft, the balance shaft is rotatably connected with the shaft body bin, one end of the transmission shaft is movably connected with a transmission gear, one end of the transmission gear is movably connected with a bearing, the bearing is fixedly connected with the transmission shaft through a bolt, one end of the transmission shaft is provided with a shaft side slot, a spring is fixedly connected inside the transmission shaft, one end of the transmission gear is fixedly connected with a collision block, one end of the collision block is slidably connected inside the shaft side slot, and the low-noise balance shaft assembly has the advantage of reducing noise outwards emitted from the inside the housing due to vibration through the sound insulation backing plate, the sound insulation interlayer, the sound insulation rubber mat and the sound insulation sleeve.

Description

Low-noise balance shaft housing assembly

Technical Field

The utility model relates to the technical field of balance shafts, in particular to a low-noise balance shaft shell assembly.

Background

In the working cycle of the engine, the movement speed of the piston is very fast and very uneven, because the piston makes repeated high-speed linear movement in the cylinder, very large inertia force is necessarily generated on the piston, the piston pin and the connecting rod, when the inertia force cannot be balanced, the engine vibrates, and the balance shaft is a shaft which is connected with the engine and is provided with an eccentric weight and synchronously rotates along with the crankshaft, and the engine obtains good balance effect by utilizing the reverse vibration force generated by the eccentric weight, so that the vibration of the engine is reduced.

Through retrieval, the patent with the Chinese patent publication number of CN215370039U discloses a balance shaft housing assembly, which comprises a first housing, wherein the first housing comprises a first mounting seat, a second mounting seat, a third mounting seat and a fourth mounting seat; the second shell is matched with the first shell, and the second shell is connected with the first shell through a fastener; the lubrication structure is arranged on the first shell and is communicated with the first mounting seat, the second mounting seat, the third mounting seat and the fourth mounting seat; the hollow locating pin is arranged between the first shell and the second shell.

The problem of noise generated when the balance shaft itself operates is solved by the lack of noise reducing components in the above technology; therefore, a low-noise balance shaft housing assembly is provided.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a low noise balance shaft housing assembly that solves or mitigates the technical problems of the prior art, and at least provides a beneficial alternative.

The technical scheme of the embodiment of the utility model is realized as follows: the sound insulation cushion comprises an upper shell and a lower shell, wherein a sound insulation base plate is fixedly connected inside the upper shell, a sound insulation interlayer is fixedly connected inside the lower shell, and a sound insulation rubber cushion is fixedly connected above the upper shell.

In some embodiments, the upper and lower housings are internally open with a drive housing and a shaft housing.

In some embodiments, a transmission shaft is movably connected in the transmission bin, one end of the transmission shaft is fixedly connected with a balance shaft, and the balance shaft is rotatably connected to the shaft bin.

In some embodiments, one end of the transmission shaft is movably connected with a transmission gear, one end of the transmission gear is movably connected with a bearing, and the bearing is fixedly connected to the transmission shaft through a bolt.

In some embodiments, a shaft side slot is formed in one end of the transmission shaft, a spring is fixedly connected inside the transmission shaft, a collision block is fixedly connected to one end of the transmission gear, and one end of the collision block is slidably connected inside the shaft side slot.

In some embodiments, the sound insulation sleeve is fixedly connected with one side of the upper shell and one side of the lower shell, the bolt hole is formed in one side of the upper shell and one side of the lower shell, a fixing bolt is fixedly connected with one end of the bolt hole, and one end of the fixing bolt is fixedly connected with the shockproof rubber pad.

In some embodiments, a transmission oil filling port and a shaft oil filling port are formed on one side of the lower shell.

In some embodiments, a rib is fixedly connected to one side of the upper shell and one side of the lower shell.

By adopting the technical scheme, the utility model has the following advantages:

1. a low-noise balance shaft housing assembly has the advantage of reducing noise emitted outwards from the inside of the housing due to vibration through a sound insulation base plate, a sound insulation interlayer, a sound insulation rubber pad and a sound insulation sleeve.

2. A low-noise balance shaft shell assembly has the advantages that one end of a collision block is slidably connected inside a shaft side groove, when a transmission gear and a transmission shaft relatively rotate, the inner side of the collision block collides with a spring, the spring provides buffering, and loss of the transmission shaft and the transmission gear in transmission with an external transmission part is reduced.

3. A low-noise balance shaft housing assembly has the advantages that loss of a fixing bolt during movement can be reduced through a shockproof rubber pad, and noise can be reduced.

Drawings

FIG. 1 is a front view block diagram of the present utility model;

FIG. 2 is an internal block diagram of the present utility model;

FIG. 3 is a partial block diagram of the first embodiment of the present utility model;

FIG. 4 is a partial block diagram of a second embodiment of the present utility model;

fig. 5 is a bottom view of the present utility model.

Reference numerals: the novel high-speed vibration-damping device comprises a 1-upper shell, a 2-lower shell, a 3-transmission bin, a 4-shaft bin, a 5-fixing bolt, a 6-shockproof rubber mat, a 7-sound insulation sleeve, an 8-sound insulation base plate, a 9-sound insulation interlayer, a 10-sound insulation rubber mat, 11-bolt holes, a 12-balance shaft, a 13-transmission shaft, a 14-transmission gear, a 15-bearing, a 16-shaft side slot, a 17-spring, a 18-collision block, a 19-transmission oil filling port, a 20-shaft oil filling port and 21-rib plates.

Detailed Description

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

In the description of the present utility model, it should 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", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

Example 1:

as shown in figures 1-5, a low noise balance shaft housing assembly comprises an upper housing 1 and a lower housing 2, wherein bolt holes 11 are formed in the periphery of the upper housing 1, a accessible fixing bolt 5 is connected to the lower part of an engine housing, a sound insulation base plate 8 is fixedly connected to the inside of the upper housing 1, the sound insulation base plate 8 is arranged inside an opening of the upper housing 1, the effect of reducing vibration transmission outwards and noise is achieved, a sound insulation interlayer 9 is fixedly connected to the inside of the lower housing 2, the sound insulation interlayer 9 has the advantage of reducing vibration transmission outwards from the lower part, a sound insulation rubber mat 10 is fixedly connected to the upper housing 1, and noise generated by vibration collision between the upper housing 1 and the engine housing due to unsound matching can be reduced by the sound insulation rubber mat 10.

In this embodiment, drive storehouse 3 and axis body storehouse 4 are opened to upper casing 1 and lower casing 2 inside, and drive storehouse 3 inside swing joint has transmission shaft 13, and transmission shaft 13 one end bolt fastening has balance shaft 12, and transmission shaft 13 drives balance shaft 12 rotation, and balance shaft 12 rotates and connects in axis body storehouse 4, and balance shaft 12 has two, connects through gear drive, and the balancing weight direction of two transmission shafts 13 is opposite, and two balancing weights can offset the first order and the second order vibration of engine when rotating, play the effect that reduces engine vibrations and reduce overall noise.

In this embodiment, one end of the driving shaft 13 is movably connected with a driving gear 14, the driving gear 14 may be connected with an external gear or a chain, power is transmitted to the driving shaft 13, one end of the driving gear 14 is movably connected with a bearing 15, the bearing 15 is fixedly connected to the driving shaft 13 through a bolt, when the driving gear 14 and the driving shaft 13 relatively move, the bearing 15 may provide buffering, and meanwhile, the driving gear 14 is prevented from being separated from the driving shaft 13 due to movement through a cover plate and the bolt.

In this embodiment, a shaft side slot 16 is formed at one end of the transmission shaft 13, a spring 17 is fixedly connected inside the transmission shaft 13, one side of the spring 17 is fixedly connected in a groove in the transmission shaft 13, the other side is higher than the upper edge of the groove, one end of the transmission gear 14 is fixedly connected with a collision block 18, the outer edge of the collision block 18 is smaller than the shaft side slot 16, one end of the collision block 18 is slidably connected inside the shaft side slot 16, when the transmission gear 14 and the transmission shaft 13 relatively rotate, the inner side of the collision block 18 collides with the spring 17, the spring 17 provides buffering, and loss of the transmission shaft 13 and the transmission gear 14 in transmission with external transmission components is reduced.

In this embodiment, go up casing 1 and lower casing 2 one side fixedly connected with sound insulating jacket 7, sound insulating jacket 7 is the sound insulating rubber material, fixed connection in the rotation junction of balance shaft 12 and last casing 1 and lower casing 2, the outgoing of noise when reducing the rotation, go up casing 1 and lower casing 2 one side and open there is bolt hole 11, the inside fixedly connected with fixing bolt 5 of bolt hole 11 one end, fixing bolt 5 one end fixedly connected with shockproof cushion 6, loss to fixing bolt 5 when shockproof cushion 6 can reduce the motion, simultaneously can the noise reduction.

In this embodiment: the periphery of the upper shell 1 is provided with bolt holes 11, the upper shell is connected to the lower part of the engine shell through the fixing bolts 5, the sound insulation base plate 8 is arranged in the opening of the upper shell 1, the effect of reducing vibration from being transmitted outwards and noise is achieved, the sound insulation interlayer 9 has the advantage of reducing vibration from being transmitted outwards from the lower part, and the sound insulation rubber pad 10 can reduce noise generated by vibration collision caused by loose fit between the upper shell 1 and the engine shell;

the transmission shafts 13 drive the balance shafts 12 to rotate, two balance shafts 12 are connected through gear transmission, the directions of the balancing weights of the two transmission shafts 13 are opposite, and when the two balancing weights rotate, the first-order vibration and the second-order vibration of the engine can be counteracted, so that the effects of reducing the vibration of the engine and reducing the overall noise are achieved;

the transmission gear 14 can be connected with an external gear or a chain to transmit power to the transmission shaft 13, and when the transmission gear 14 and the transmission shaft 13 relatively move, the bearing 15 can provide buffering, and meanwhile, the transmission gear 14 is prevented from being separated from the transmission shaft 13 due to movement through the cover plate and the bolt;

one side of the spring 17 is fixedly connected in a groove in the transmission shaft 13, the other side is higher than the upper edge of the groove, when the transmission gear 14 and the transmission shaft 13 relatively rotate, the inner side of the collision block 18 collides with the spring 17, the spring 17 provides buffering, and the loss of the transmission shaft 13 and the transmission gear 14 when in transmission with external transmission parts is reduced;

the sound insulation sleeve 7 is made of sound insulation rubber, is fixedly connected to the rotation connection part of the balance shaft 12 and the upper shell 1 and the lower shell 2, reduces the transmission of noise during rotation, and the vibration-proof rubber pad 6 can reduce the loss of the fixing bolt 5 during movement and reduce noise.

Example 2:

a low noise balance shaft housing assembly, the present embodiment is modified from that of example 1, as shown in figures 1-5,

in this embodiment, a transmission oil filling port 19 and a shaft oil filling port 20 are opened on one side of the lower housing 2, and the transmission oil filling port 19 and the shaft oil filling port 20 are provided with rubber plugs, so that lubricating oil can be filled into the lower housing when the lower housing is opened.

In this embodiment, the rib plate 21 is fixedly connected to one side of the upper housing 1 and one side of the lower housing 2, and the rib plate 21 can provide higher strength for the upper housing 1 and the lower housing 2, so as to reduce deformation in service life.

In this embodiment: the transmission oil filling port 19 and the shaft body oil filling port 20 are provided with rubber plugs, lubricating oil can be filled into the inner part when the transmission oil filling port is opened, the rib plates 21 can provide higher strength for the upper shell 1 and the lower shell 2, and deformation in the service life is reduced.

When the engine is in operation, the periphery of the upper shell 1 is provided with the bolt holes 11, the engine can be connected below the engine shell through the fixing bolts 5, the sound insulation base plate 8 is arranged inside the opening of the upper shell 1, the effect of reducing vibration transmission outwards and noise is achieved, the sound insulation interlayer 9 has the advantage of reducing vibration transmission outwards from the lower part, and the sound insulation rubber cushion 10 can reduce noise generated by vibration collision caused by loose fit between the upper shell 1 and the engine shell;

the sound insulation sleeve 7 is made of sound insulation rubber, is fixedly connected to the rotation connection part of the balance shaft 12 and the upper shell 1 and the lower shell 2, reduces the transmission of noise during rotation, and the vibration-proof rubber pad 6 can reduce the loss of the fixing bolt 5 during movement and reduce noise;

the transmission oil filling port 19 and the shaft body oil filling port 20 are provided with rubber plugs, lubricating oil can be filled into the inner part when the transmission oil filling port is opened, the rib plates 21 can provide higher strength for the upper shell 1 and the lower shell 2, and deformation in the service life is reduced.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that various changes and substitutions are possible within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a balanced axle housing assembly of low noise, includes casing (1) and lower casing (2), its characterized in that: the sound insulation cushion is characterized in that a sound insulation cushion plate (8) is fixedly connected inside the upper shell (1), a sound insulation interlayer (9) is fixedly connected inside the lower shell (2), and a sound insulation rubber cushion (10) is fixedly connected above the upper shell (1).

2. A low noise balance shaft housing assembly according to claim 1, wherein: the upper shell (1) and the lower shell (2) are internally provided with a transmission bin (3) and a shaft body bin (4).

3. A low noise balance shaft housing assembly according to claim 2, wherein: the transmission bin (3) is internally and movably connected with a transmission shaft (13), one end of the transmission shaft (13) is fixedly connected with a balance shaft (12), and the balance shaft (12) is rotatably connected with the shaft body bin (4).

4. A low noise balance shaft housing assembly according to claim 3, wherein: one end of the transmission shaft (13) is movably connected with a transmission gear (14), one end of the transmission gear (14) is movably connected with a bearing (15), and the bearing (15) is fixedly connected to the transmission shaft (13) through a bolt.

5. The low noise balance shaft housing assembly of claim 4, wherein: one end of the transmission shaft (13) is provided with a shaft side slot (16), a spring (17) is fixedly connected inside the transmission shaft (13), one end of the transmission gear (14) is fixedly connected with a collision block (18), and one end of the collision block (18) is slidably connected inside the shaft side slot (16).

6. A low noise balance shaft housing assembly according to claim 2, wherein: the sound insulation device is characterized in that one side of the upper shell (1) and one side of the lower shell (2) are fixedly connected with sound insulation sleeves (7), one side of the upper shell (1) and one side of the lower shell (2) are provided with bolt holes (11), one end of each bolt hole (11) is internally fixedly connected with a fixing bolt (5), and one end of each fixing bolt (5) is fixedly connected with a shockproof rubber pad (6).

7. The low noise balance shaft housing assembly of claim 6, wherein: one side of the lower shell (2) is provided with a transmission oil filling port (19) and a shaft body oil filling port (20).

8. The low noise balance shaft housing assembly of claim 7, wherein: one side of the upper shell (1) and one side of the lower shell (2) are fixedly connected with rib plates (21).