Balanced axle frame, engine and vehicle

Abstract

The application discloses a balance shaft frame, an engine and a vehicle, and relates to the technical field of engines, and in particular to a balance shaft frame, which comprises a balance shaft gear used for meshing with a driving gear ring of a crankshaft, a balance ring and a guide support, the balance shaft gear is in transmission cooperation with the balance ring, the balance ring is in guide cooperation with the guide support, and the balance shaft gear is arranged to drive the balance ring to reciprocate along the guide support when rotating. According to the balance shaft frame, the inertial force of the engine can be effectively balanced, the running stability of the engine is improved, the knocking and whistling NVH problems caused by multi-stage gear transmission are solved, noise is reduced, user experience is improved, the overall structure is simple, the cost is low, the structure is compact, and the balance shaft frame occupies a small space.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle manufacturing, in particular to a balance shaft frame, an engine with the balance shaft frame and a vehicle with the balance shaft frame or the engine. BACKGROUND

[0002] The vibration and noise level of an engine has become one of the important evaluation indexes of the overall performance of the engine. Improving the vibration quality and reducing the cost is the main way to improve the market competitiveness of the engine, and improving the vibration quality of the engine is also an important way to reduce the vibration of the vehicle. The balance shaft technology is used to reduce the vibration of the engine and improve the driving comfort.

[0003] The existing balance shaft transmission forms of the engine are mainly chain transmission and gear transmission. In the gear transmission form, multi-stage gear meshing transmission is used, and whistling and knocking noises are prone to occur in the engine. The human ear is very sensitive to the whistling noise, and the subjective feeling is not good. In addition, the large number of gears leads to a large weight and a large occupied space. SUMMARY

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application provides a balance shaft frame, which can effectively balance the inertial force of the engine, improve the running stability of the engine, solve the knocking and whistling NVH problems caused by multi-stage gear transmission, thereby reducing the noise and improving the user experience, and has a simple overall structure, low cost, compact structure and small occupied space.

[0005] The balance shaft frame according to the embodiment of the present application comprises: a balance shaft gear for meshing with a driving gear ring of a crankshaft; a balance ring and a guide support, the balance shaft gear is in transmission cooperation with the balance ring, and the balance ring is in guide cooperation with the guide support; wherein the balance shaft gear is arranged to drive the balance ring to reciprocate along the guide support when rotating.

[0006] The balance shaft frame according to the embodiment of the present application, by meshing the balance shaft gear with the driving gear ring of the crankshaft, receives the power from the crankshaft to drive the balance shaft gear to rotate, and by driving the balance ring to reciprocate along the guide support when the balance shaft gear rotates, converts the rotary motion of the balance shaft gear into the linear reciprocating motion of the balance ring, thereby effectively balancing the inertial force of the engine, improving the running stability of the engine, solving the knocking and whistling NVH problems caused by multi-stage gear transmission, reducing the noise, improving the user experience, and having a simple overall structure, low cost, light weight, compact structure and small occupied space.

[0007] The balance shaft frame according to some embodiments of the present application further comprises a transmission member connected to the balance shaft gear, and the balance shaft gear is in transmission cooperation with the balance ring through the transmission member.

[0008] The balance shaft frame according to some embodiments of the present application, the balance ring is provided with a movement space, the transmission member comprises a driving part, the driving part extends into the movement space, and the driving part is adapted to push the inner wall of the movement space to drive the balance ring to move.

[0009] The balance shaft frame according to some embodiments of the present application, the movement space is configured as an oblong hole extending along a first direction, and the first direction intersects with the guide direction of the guide support.

[0010] The balance shaft frame according to some embodiments of the present application, the transmission member further comprises a limiting part, and the outer diameter of the limiting part is greater than the width of the movement space in a second direction, and the second direction intersects with the first direction.

[0011] The balance shaft frame according to some embodiments of the present application, the guide direction is perpendicular to the first direction; and / or, the second direction is perpendicular to the first direction.

[0012] The balance shaft frame according to some embodiments of the present application, the transmission member further comprises a first connecting part, the balance shaft gear is provided with an eccentrically arranged second connecting part, and the first connecting part is in connecting cooperation with the second connecting part.

[0013] The balance shaft frame according to some embodiments of the present application, one of the first connecting part and the second connecting part is configured as a connecting hole, and the other is configured as a connecting column, and the connecting column is in plug-in cooperation with the connecting hole along the axial direction of the balance shaft gear.

[0014] The balance shaft frame according to some embodiments of the present application, the balance ring is provided with a guide cooperation part, the guide support is provided with a guide part, and the guide cooperation part is in sliding cooperation along the guide part; and / or, the guide support is provided with a weight-reducing hole; and / or, further comprising a balance shaft support, and the balance shaft gear is rotatably installed on the balance shaft support.

[0015] The balance shaft frame according to some embodiments of the present application, the guide part is configured as a guide chute, the guide cooperation part is configured as a guide block protruding from the balance ring towards the guide support, the guide block extends into the guide chute and slides along the guide chute; and / or, the guide cooperation part and the guide part are both multiple, and the multiple guide cooperation parts and the multiple guide parts are in one-to-one cooperation.

[0016] The present application further provides an engine.

[0017] An engine according to an embodiment of the present application comprises a crankshaft and a balance shaft frame according to any one of the above embodiments, wherein the balance shaft gear is engaged with the drive ring of the crankshaft.

[0018] The present application also provides a vehicle.

[0019] A vehicle according to an embodiment of the present application comprises a balance shaft frame according to any one of the above embodiments or an engine according to the above embodiments.

[0020] The vehicle, the engine and the balance shaft frame according to the above embodiments have the same advantages as the prior art, which will not be repeated here.

[0021] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be learned by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the following description, taken in conjunction with the accompanying drawings, in which:

[0023] Figure 1 is a structural schematic diagram of a balance shaft frame according to an embodiment of the present application;

[0024] Figure 2 is a structural schematic diagram of a balance shaft frame and a drive ring of a crankshaft according to an embodiment of the present application;

[0025] Figure 3 is a structural schematic diagram of a balance ring according to an embodiment of the present application;

[0026] Figure 4 is a structural schematic diagram of a transmission member according to an embodiment of the present application;

[0027] Figure 5 is a structural schematic diagram of a balance ring and a transmission member according to an embodiment of the present application;

[0028] Figure 6 is a structural schematic diagram of a balance shaft gear according to an embodiment of the present application;

[0029] Figure 7 is a structural schematic diagram of a balance shaft support according to an embodiment of the present application;

[0030] Figure 8 is a structural schematic diagram of a guide support according to an embodiment of the present application;

[0031] Figure 9 is a structural schematic diagram of a guide support and a balance ring according to an embodiment of the present application.

[0032] REFERENCE SIGNS:

[0033] Balance shaft frame 100,

[0034] Balance shaft gear 1, second connecting part 11, driving gear ring 2, balance ring 3, movable space 31, guide block 32, guide support 4, guide chute 41, weight-reducing hole 42, needle bearing 5, transmission part 6, first connecting part 61, driving part 62, planar section 621, limiting part 63, balance shaft support 7, guide bearing 81, gear bearing 82. DETAILED DESCRIPTION

[0035] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are for the purpose of explanation of the present application, and are not to be understood as a limitation of the present application.

[0036] In the description of the present application, it needs to be understood that the orientation or positional relationship indicated by 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" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to 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 cannot be understood as a limitation of the present application. In addition, the features defined as "first", "second" can be explicitly or implicitly included one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0037] In the description of the present application, it needs to be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] Unless otherwise specified, the front-rear direction in the present application is the longitudinal direction of the vehicle, i.e. the X direction; the left-right direction is the lateral direction of the vehicle, i.e. the Y direction; the up-down direction is the vertical direction of the vehicle, i.e. the Z direction.

[0039] The following description is made with reference to Figures 1-9The balanced axle frame 100 according to the embodiment of the present application can effectively balance the inertial force of the engine, improve the running stability of the engine, solve the knocking and whistling NVH problems caused by the multi-stage gear transmission, reduce the noise, improve the user experience, and has simple overall structure, low cost, compact structure and small space occupation.

[0040] As shown in the figure, the balanced axle frame 100 according to an embodiment of the present application comprises a balance shaft gear 1, a balance ring 3 and a guide support 4. Figures 1-9

[0041] First of all, it needs to be pointed out that during the operation of the engine, the rapid and uneven movement of the piston will generate a large inertial force, which will cause the engine to vibrate. The balanced axle frame 100 of the present application can balance these inertial forces to reduce the vibration of the engine.

[0042] The balance shaft gear 1 is used to mesh with the driving gear ring 2 of the crankshaft, as shown in the figure, the balance shaft gear 1 meshes with the driving gear ring 2 of the crankshaft, so that the driving gear ring 2 of the crankshaft can drive the balance shaft gear 1 to rotate and transmit power to the balance shaft gear 1. And the balance shaft gear 1 and the balance ring 3 are in transmission cooperation, that is, the balance ring 3 can receive the driving force from the balance shaft gear 1, and transmit the driving force to the balance ring 3 through the driving part 62 to drive the balance ring 3 to move. And the balance ring 3 and the guide support 4 are in guiding cooperation, that is, the guide support 4 provides guidance and support for the balance ring 3, so that the balance ring 3 can move along the guide support 4, and the balance ring 3 can move stably along the set motion track without deviation and shaking, etc., thereby ensuring the accuracy and reliability of the balance ring 33 movement, and further ensuring the stability and reliability of the entire balanced axle frame 100. Figure 1

[0043] Among them, it can be understood that the driving gear ring 2 of the crankshaft and the balance shaft gear 1 are arranged in opposite directions, and when the engine is running, the crankshaft drives the balance shaft gear 1 to rotate through its driving gear ring 2, which synchronously moves with the crankshaft, but the rotation direction is opposite, which ensures that the balance shaft gear 1 can generate a rotating force equal to the unbalanced force generated by the rotation of the crankshaft, and the action direction is opposite, thereby realizing the balance of the engine.

[0044] Further, the balance shaft gear 1 is arranged to drive the balance ring 3 to move along the guide support 4 when rotating.

[0045] That is, during the actual operation of the engine, the crankshaft drives the balance shaft gear 1 to rotate through its driving gear ring 2, and when the balance shaft gear 1 rotates, the balance shaft gear 1 transmits power to the balance ring 3 to drive the balance ring 3 to move along the guide support 4, as shown in the figure. Figure 1 ​​As shown, the balance ring 3 can move up and down along the guide support 4, and with the continuous rotation of the balance shaft gear 1, the balance shaft gear 1 can drive the balance ring 3 to continuously move up and down along the guide support 4, thereby effectively balancing the inertial force of the engine and improving the stability of the overall operation of the engine.

[0046] It should be noted that the existing engine balance shaft structure is mainly in the form of chain transmission and gear transmission. The gear transmission has high transmission accuracy and can achieve accurate transmission ratio to ensure the strict speed relationship between the balance shaft and the crankshaft. Moreover, the gear transmission has strong carrying capacity and can maintain stable operation even under high speed and high load conditions, and is not prone to transmission failure. In addition, the gear transmission balance shaft has high reliability, relatively low space requirement and other advantages. However, the existing gear transmission is in the form of multi-stage gear transmission, and the structure of the parts is complex. The gear transmission has high noise, high manufacturing and installation precision requirements, and the impact and friction of the gear will affect the NVH performance. The human ear is very sensitive to whistling noise, which will make the user feel bad. If the gear manufacturing precision is not high, the gear design is unreasonable or the installation gap is too large, the noise problem will be more serious. In addition, the gear backlash and large inertia will cause gear knocking, which will put high requirements on the installation and manufacturing process, resulting in inconvenient manufacturing, increased cost, and higher gear precision and cost. A large number of gears will also increase the overall weight of the balance shaft structure and occupy more space, which is not conducive to installation and arrangement. Therefore, the multi-stage gear transmission in the engine is prone to whistling and knocking noise, affecting the NVH performance, and the weight is heavy, the overall size is large, the space occupied is large, and the cost is high.

[0047] The balance shaft gear 1 drives the balance ring 3 to move reciprocatingly along the guide support 4, thereby converting the rotary motion of the balance shaft gear 1 into the linear reciprocating motion of the balance ring 3. Thus, the number of gears used is reduced, the knocking and whistling NVH problems caused by multi-stage gear transmission are solved, the noise is reduced, the user experience is improved, the overall weight of the balance shaft structure 100 is reduced due to the reduction in the number of gears used, the structural compactness is improved, the manufacturing cost is reduced, and the manufacturing convenience is improved.

[0048] According to the balance shaft frame 100, the balance shaft gear 1 is engaged with the driving gear ring 2 of the crankshaft to receive power from the crankshaft to drive the balance shaft gear 1 to rotate, and the balance ring 3 is driven to reciprocate along the guide support 4 when the balance shaft gear 1 rotates, so as to convert the rotary motion of the balance shaft gear 1 into the linear reciprocating motion of the balance ring 3, thereby effectively balancing the inertial force of the engine, improving the running stability of the engine, solving the knocking and whistling NVH problems caused by multi-stage gear transmission, reducing noise, improving user experience, and the balance shaft frame 100 has simple overall structure, low cost, light weight, compact structure and small space occupation.

[0049] In some embodiments, the balance shaft frame 100 further comprises a transmission member 6, the transmission member 6 is connected to the balance shaft gear 1, and the balance shaft gear 1 is in transmission cooperation with the balance ring 3 through the transmission member 6.

[0050] Specifically, as shown in Figure 1 and Figure 4 , the balance shaft frame 100 further comprises a transmission member 6, one end of the transmission member 6 is connected to the balance shaft gear 1, and the other end of the transmission member 6 is connected to the balance ring 3, that is, the transmission member 6 is connected between the balance shaft gear 1 and the balance ring 3, and the transmission cooperation between the balance shaft gear 1 and the balance ring 3 is realized through the transmission member 6, so that the transmission member 6 can drive the balance ring 3 to reciprocate along the guide support 4 when the balance shaft gear 1 rotates, thereby realizing power transmission from the balance shaft gear 1 to the balance ring 3 through the transmission member 6, and ensuring stable movement of the balance ring 3.

[0051] In some embodiments, as shown in Figure 3 , the balance ring 3 is hollow to form a movable space 31, as shown in Figure 4 , the transmission member 6 comprises a driving part 62 for driving the balance ring 3 to move, as shown in Figure 5 , the driving part 62 extends into the movable space 31, that is, the movable space 31 is a space in which the driving part 62 can move, and the driving part 62 can move in the movable space 31 to drive the balance ring 3 to move when the transmission member 6 moves.

[0052] Further, the driving part 62 is adapted to push the inner wall of the movable space 31 to drive the balance ring 3 to move.

[0053] That is, the size of the activity space 31 should be matched with the size of the driving part 62, so that the driving part 62 can extend from the side of the balance shaft gear 1 to the inner wall of the activity space 31 in contact connection, so that when the balance shaft gear 1 rotates to drive the transmission member 6 to move, the driving part 62 can move in the activity space 31 to generate a pushing force, so as to push the inner wall of the activity space 31 to drive the balance ring 3 to move, so as to realize the reciprocating movement of the balance ring 3 along the guide support 4.

[0054] In actual design, the driving part 62 of the transmission member 6 can be configured as a driving pin, which has stable structure, high durability and reliability, and is easy to install and maintain, so as to prolong the service life of the driving part 62 and improve the transmission stability and reliability of the transmission member 6 and the balance ring 3.

[0055] In some embodiments, the activity space 31 is configured as an elongated circular hole extending in the first direction, and the first direction intersects with the guide direction of the guide support 4.

[0056] Specifically, the first direction can be a horizontal direction, for example, a front-rear direction, a left-right direction, etc., that is, the activity space 31 can be configured as an elongated circular hole extending in the horizontal direction, so that the driving part 62 can be configured as a cylindrical shape, so that the driving part 62 can move smoothly in the activity space 31 in the form of an elongated circular hole in the first direction, and the guide direction of the guide support 4 intersects with the first direction, which can be perpendicular or not perpendicular, and the guide direction of the guide support 4 is the movement direction of the balance ring 3, so that the movement direction of the driving part 62 is different from the movement direction of the balance ring 3, avoiding the interference between the reciprocating movement of the balance ring and the movement direction of the driving part 62 in the activity space 31.

[0057] In addition, the movement of the balance ring 3 is not only constrained and guided by the guide support 4, but also further limited by the shape of the activity space 31, so as to ensure the stability and controllability of the balance ring 3 during reciprocating movement.

[0058] As shown in Figure 3 the first direction is Figure 3In the left-right direction, the left and right ends of the balance ring 3 are configured in a semicircular shape, the semicircular structures at the two ends are spaced apart by a certain distance, and the upper and lower ends of the semicircular structures at the two ends are connected to each other to form a long-circular overall structure of the balance ring 3, and the inside of the balance ring 3 is hollow to form a long-circular hole extending in the left-right direction. The driving part 62 is configured in a cylindrical shape and extends into the long-circular hole to be in abutting contact with the inner wall of the long-circular hole, so that the driving part 62 can move in the long-circular hole and slide relative to the inner wall of the long-circular hole to generate a pushing force to push the inner wall of the long-circular hole to drive the balance ring 3 to move. It can be understood that the length of the long-circular hole in the left-right direction is the displacement of the driving part 62 that can move in the activity space 31, that is, the length of the long-circular hole in the left-right direction limits the maximum displacement of the driving part 62 in the activity space 31. In actual design, the length of the long-circular hole can be flexibly set according to actual conditions and needs to ensure the stable and reliable movement of the driving part 62 and the balance ring 3.

[0059] In actual design, the weight of the balance ring 3 can be calculated according to the unbalance amount C of the engine and the stroke m = 4C / L of the driving part 62. The weight of the balance ring 3 of the present application is smaller, which can greatly reduce the overall weight of the balance shaft frame 100 and realize the lightweight and miniaturization of the balance shaft frame 100.

[0060] As shown in Figure 3 and Figure 5 , a needle bearing 5 can also be provided on the inner wall of the activity space 31 or on the outer peripheral wall of the driving part 62. In this way, the outer peripheral wall of the driving part 62 and the inner wall of the activity space 31 can be in rolling contact through the needle bearing 5, so that the driving part 62 can roll and slide more smoothly relative to the inner wall of the activity space 31 when moving in the activity space 31, thereby reducing the friction between the driving part 62 and the inner wall of the activity space 31, reducing the wear of the driving part 62 and the balance ring 3, and prolonging the service life of the two. At the same time, the needle bearing 5 can also provide stable support for the driving part 62, so that the driving part 62 moves more stably in the activity space 31, the movement efficiency is higher, and the transmission efficiency of the power is improved.

[0061] In some embodiments, the transmission member 6 further includes a limiting part 63, and the outer diameter of the limiting part 63 is greater than the width of the activity space 31 in the second direction, and the second direction intersects the first direction.

[0062] Specifically, the limiting part 63 is used to limit the movement of the balance ring 3, so that the position of the balance ring 3 is stable, so that the driving part 62 can move stably in the activity space 31, and prevent the balance ring 3 from deviating to cause the driving part 62 to be pulled out of the activity space 31, so that the balance shaft frame 100 cannot work normally. As shown in Figure 5 , the first direction is Figure 5The left and right directions, i.e., the first direction, can be the length direction of the balance ring 3, and the second direction can be the direction that intersects with the left and right directions, which can be perpendicular or non-perpendicular. Figure 5 The second direction shown is the vertical direction. The limiting part 63 is constructed in the shape of a disc and is connected to the driving part 62. The outer diameter of the limiting part 63 is greater than the width of the movable space 31 in the vertical direction. In this way, when the driving part 62 extends into the movable space 31, the limiting part 63 is located outside the movable space 31. Since the outer diameter of the limiting part 63 is greater than the width of the movable space 31 in the vertical direction, the balance ring 3 can be limited, restricting the balance ring 3 from moving axially along the driving part 62. This prevents the balance ring 3 from shifting axially, causing the driving part 62 to axially disengage from the movable space 31. Thus, the stable movement of the balance ring 3 is ensured, and the movement accuracy is improved.

[0063] In some embodiments, the guiding direction is perpendicular to the first direction.

[0064] Specifically, such as Figure 1 and Figure 3 As shown, the first direction is the horizontal direction, which is also the length direction of the balance ring 3, and the guiding direction is... Figure 1 The vertical direction in the middle is also the vertical direction of the vehicle. Therefore, the guiding direction is perpendicular to the first direction. The drive unit 62 can move horizontally within the activity space 31 to drive the balance ring 3 to perform linear reciprocating motion in the vertical direction.

[0065] In some other embodiments, the second direction is perpendicular to the first direction.

[0066] Specifically, such as Figure 1 and Figure 3 As shown, the first direction is horizontal, and the second direction is... Figure 1 and Figure 3 The vertical direction in the middle is also the vertical direction of the vehicle. In this way, the second direction is perpendicular to the first direction. The outer diameter of the limiting part 63 is greater than the width of the movable space 31 in the vertical direction, that is, the second direction. The limiting part 63 is located between the balance ring 3 and the balance shaft gear 1, so that the balance ring 3 can be blocked and limited, restricting the balance ring 3 from shifting or shaking in the direction of the balance shaft gear 1.

[0067] In some embodiments, the transmission member 6 further comprises a first connecting portion 61 for connecting the balance shaft gear 1, so as to ensure that the transmission member 6 can be firmly connected with the balance shaft gear 1, and the balance shaft gear 1 is provided with an eccentrically arranged second connecting portion 11, i.e., the second connecting portion 11 is located at a position deviating from the center of the balance shaft gear 1, and the shape and size of the second connecting portion 11 are matched with those of the first connecting portion 61, so that the first connecting portion 61 can be connected and matched with the second connecting portion 11, so as to realize the connection of the balance shaft gear 1 and the transmission member 6, and then the driving portion 62 of the transmission member 6 can be driven to move when the balance shaft gear 1 rotates, so that the driving portion 62 can perform eccentric rotation around the center of the balance shaft gear 1.

[0068] Specifically, as shown in Figure 4 , the transmission member 6 comprises the first connecting portion 61 connected to the limiting portion 63 at one end close to the balance shaft gear 1, and the second connecting portion 11 is arranged at a position deviating from the center of the balance shaft gear 1, and the first connecting portion 61 is connected and matched with the second connecting portion 11.

[0069] In some embodiments, one of the first connecting portion 61 and the second connecting portion 11 is configured as a connecting hole, and the other is configured as a connecting column, and the connecting column is inserted and matched with the connecting hole in the axial direction of the balance shaft gear 1.

[0070] That is, the first connecting portion 61 can be configured as a connecting hole, and the second connecting portion 11 can be configured as a connecting column extending in the axial direction of the balance shaft gear 1, or the first connecting portion 61 can be configured as a connecting column, and the second connecting portion 11 can be configured as a connecting hole penetrating through in the axial direction of the balance shaft gear 1, and the shape and size of the connecting column are matched with those of the connecting hole, so that the connecting column can be smoothly inserted into the connecting hole, so as to realize the insertion and matching of the connecting column and the connecting hole in the axial direction of the balance shaft gear 1. Thus, through the insertion and matching of the connecting hole and the connecting column, the transmission member 6 is firmly connected with the balance shaft gear 1, so that the balance shaft gear 1 can stably and reliably drive the driving portion 62 to perform eccentric rotation when the balance shaft gear 1 rotates.

[0071] Specifically, as shown in Figure 1 and Figure 4 , the second connecting portion 11 is configured as a connecting hole, and the first connecting portion 61 is configured as a connecting column, the connecting hole penetrates through in the axial direction of the balance shaft gear 1, and the connecting column is inserted into the connecting hole for insertion and matching, so as to realize the connection of the transmission member 6 and the balance shaft gear 1.

[0072] In actual design, as shown in Figure 4As shown, the radial dimension of the driving portion 62 is greater than the radial dimension of the first connecting portion 61, so as to improve the carrying capacity of the driving portion 62, and the radial dimensions of the driving portion 62 and the first connecting portion 61 are both smaller than the radial dimension of the limiting portion 63, so that the axial limiting of the transmission member 6 can also be realized, the position of the transmission member 6 can be kept stable, and the transmission member 6 can be prevented from deviating towards the balance shaft gear 1. The middle position of the driving portion 62 in the up-down direction can be provided as a flat section 621, so that the flat section 621 can always be in contact with the rolling pin bearing 5 on the inner wall of the movable space 31, so as to improve the carrying capacity of the rolling pin bearing 5 and avoid the deflection of the balance ring 3 during movement.

[0073] In some embodiments, the balance ring 3 is provided with a guide matching portion, the guide support 4 is formed with a guide portion, and the guide matching portion is slidably matched along the guide portion.

[0074] That is, the guide portion is matched with the guide matching portion to realize the sliding matching of the guide matching portion and the guide portion. The guide portion can have a certain length, so that it can guide the guide matching portion to slide along the length direction, so that the balance ring 3 can stably reciprocate along a specific path under the guidance of the guide support 4 and will not deviate, so as to ensure the stability and accuracy of the movement of the balance ring 3.

[0075] In other embodiments, the guide support 4 is provided with a weight-reducing hole 42, which is used to reduce the weight of the guide support 4, so as to further reduce the weight of the balance shaft frame 100 and realize light weight. The weight-reducing hole 42 can be provided as one, two, three, four, etc. Figure 8 As shown, the weight-reducing hole 42 is provided as three, the three weight-reducing holes 42 are distributed between the two guide portions, and the three weight-reducing holes 42 are distributed in the sliding direction of the guide portion and are spaced apart, so as to reduce the weight of the guide support 4 at multiple positions. In this way, the structure of the guide support 4 between the weight-reducing holes 42 has a certain structural strength, so as to ensure the required rigidity of the guide support 4 and make the movement of the balance ring 3 relative to the guide support 4 more stable.

[0076] The weight-reducing hole 42 can be configured as a strip-shaped slot hole, a square slot hole, etc. The weight-reducing hole 42 is formed by grooving in the middle region of the guide support 4, and the number of weight-reducing holes 42 is not limited to the embodiments described herein, but can be selectively provided according to the actual structure size.

[0077] In some embodiments, the balance shaft frame 100 further comprises a balance shaft support 7, and the balance shaft gear 1 is rotatably installed on the balance shaft support 7. The balance shaft support 7 is a fixed structure and is used for connecting the balance shaft gear 1. Figure 6 As shown, the center of the balance shaft gear 1 is provided with a gear bearing 82, and the gear bearing 82 is rotatably installed on the balance shaft support 7. Figure 7As shown, the balance shaft support 7 is provided with a support shaft, and the balance shaft gear 1 is supported and connected with the support shaft through a gear bearing 82, so that the balance shaft gear 1 can rotate relative to the balance shaft support 7 after the driving gear ring 2 of the crankshaft rotates.

[0078] In some embodiments, as shown in Figure 8 and Figure 9 , the guide part is configured as a guide sliding groove 41, which is open towards the balance ring 3 and extends in the up-down direction, and the length of the guide sliding groove 41 is the stroke range of the balance ring 3, that is, the maximum displacement of the balance ring 3 in the up-down direction.

[0079] As shown in Figure 3 and Figure 9 , the guide matching part is configured as a guide block 32 protruding from the balance ring 3 towards the guide support 4, Figure 3 and Figure 9 , the guide block 32 is configured as a rectangular block, and can also be configured as a cylindrical or other shape, and correspondingly, the shape and size of the guide sliding groove 41 are matched with the shape and size of the guide block 32, Figure 8 and Figure 9 , the guide sliding groove 41 is a rectangular groove, so that the guide block 32 can smoothly extend into the guide sliding groove 41 and slide up and down along the guide sliding groove 41, and thus, in practice, when the balance shaft gear 1 rotates, the driving part 62 can perform eccentric motion to drive the balance ring 3 to move, so that the guide block 32 of the balance ring 3 performs up-down linear reciprocating motion in the guide sliding groove 41, thereby realizing the up-down linear reciprocating motion of the balance ring 3.

[0080] In actual design, as shown in Figure 8 and Figure 9 , a guide bearing 81 can also be arranged in the guide sliding groove 41 to reduce the friction between the guide block 32 and the guide sliding groove 41 and ensure that the guide block 32 can slide more smoothly along the guide sliding groove 41 to realize the up-down linear reciprocating motion, and the guide bearing 81 can be configured as a needle bearing, which can be arranged on the inner wall of the guide sliding groove 41 to reduce the friction between the guide block 32 and the guide sliding groove 41 through the rolling sliding between the guide block 32 and the needle bearing, and increase the smoothness of the sliding cooperation between the guide block 32 and the guide sliding groove 41, of course, the needle bearing can also be arranged on the outer peripheral wall of the guide block 32 to reduce the friction between the guide block 32 and the guide sliding groove 41 through the rolling sliding between the inner wall of the guide sliding groove 41 and the needle bearing, and increase the smoothness of the sliding cooperation between the guide block 32 and the guide sliding groove 41.

[0081] In some embodiments, the guide matching part and the guide part are both multiple, that is, the guide matching part and the guide part can be provided as two, three or even more, and the number of guide matching parts corresponds to the number of guide parts, so that the multiple guide matching parts can be matched with the multiple guide parts one by one, that is, each guide part is in sliding fit with the corresponding guide matching part, thereby, through the sliding fit of the multiple guide matching parts and the multiple guide parts, the smoothness of the balance ring 3 can be improved, so that the guide sliding of the balance ring 3 relative to the guide support 4 is more stable and reliable, and deviation and jamming of the balance ring 3 are prevented.

[0082] Specifically, as shown in Figure 3 , Figure 8 and Figure 9 , the guide matching part and the guide part are both provided as two, the two guide matching parts are distributed at intervals, as shown in Figure 3 , the two guide matching parts are distributed at both ends of the length direction of the balance ring 3, the two guide parts are distributed at intervals, as shown in Figure 8 , the two guide parts are distributed at both ends of the length direction of the guide support 4, and the two guide parts both extend in the up-down direction, and the two guide matching parts are distributed one by one corresponding to the two guide parts, so that the guide matching part can be accurately in sliding fit with the corresponding guide part.

[0083] In actual design, a bolt hole can also be provided on the balance shaft support 7, so that in actual assembly, the balance shaft support 7 can be first assembled to the oil pan bottom finish machining plane, and then the bolt is passed through the bolt hole for fastening, so as to ensure that the assembly is flat and has no inclination, so as to ensure that the balance shaft frame 100 is stably supported. Compared with the traditional integrated balance shaft, the balance shaft frame 100 of the present application reduces the balance shaft mounting shell, thereby further reducing the weight and cost of the balance shaft frame 100, reducing the assembly error and reducing the risk of knocking and whistling.

[0084] Then, in the assembly process, the gear bearing 82 and the first connecting part 61 are interference heat-pressed into the balance shaft gear 1 to form a balance shaft gear 1 assembly, so that the connection of the balance shaft gear 1, the gear bearing 82 and the first connecting part 61 during operation is firm and has no slip. Then the balance shaft gear 1 is assembled to the balance shaft support 7 to form a transmission system, and the rotational torque of the crankshaft is transmitted to the balance shaft frame 100 through the meshing of the balance shaft gear 1 and the driving gear ring 2 of the crankshaft. Compared with the traditional integrated balance shaft, the balance shaft frame 100 of the present application also reduces the number of bearings, thereby further reducing the cost and the reliability problems and vibration and noise problems caused by bearing wear, and the reduction of the number of bearings reduces the friction loss, which has a positive effect on reducing the engine oil consumption.

[0085] Then, the balance ring 3 can be assembled to the driving part 62 to form the balance shaft frame 100, so that the reciprocating inertial force of the engine can be balanced, and the balance shaft frame 100 of the application reduces the number of gears, reduces the overall weight of the balance shaft frame 100, and reduces gear noise compared with the traditional integrated balance shaft.

[0086] Finally, the guide bearing 81 can be interference-fitted into the guide sliding groove 41 to avoid the guide bearing 81 from falling out during the operation of the balance shaft frame 100, and then the guide block 32 can be installed into the guide sliding groove 41, the guide support 4 is assembled to the bottom finishing plane of the oil pan and is fastened by bolts to ensure that the assembly is flat and has no inclination, so as to form a guide system for guiding the balance ring 3 to stably and linearly reciprocate up and down.

[0087] The engine according to the embodiment of the application comprises a crankshaft and the balance shaft frame 100 of any one of the above embodiments, and the balance shaft gear 1 is engaged with the driving gear ring 2 of the crankshaft.

[0088] Specifically, since the balance shaft gear 1 is engaged with the driving gear ring 2 of the crankshaft, when the driving gear ring 2 rotates, power can be transmitted to the balance shaft gear 1 to drive the balance shaft gear 1 to rotate, that is, the balance shaft frame 100 receives unbalanced power from the driving gear ring 2, and then the balance shaft frame 100 converts the rotary motion of the balance shaft gear 1 into the linear reciprocating motion of the balance ring 3, thereby effectively balancing the inertial force of the engine, improving the running stability of the engine, making the engine run more stably and reliably, and reducing the noise generated during the operation of the engine, improving the NVH performance, improving the user experience, and improving the structural compactness of the engine due to the simple overall structure of the balance shaft frame 100 and the small occupied space, which is beneficial to the lightweight of the engine.

[0089] The application further provides a vehicle.

[0090] The vehicle according to the embodiment of the application comprises the balance shaft frame 100 of any one of the above embodiments or the engine of the above embodiments.

[0091] The vehicle according to the embodiment of the application, by being provided with the balance shaft frame 100 or the engine described above, effectively improves the driving stability and comfort of the vehicle, reduces the noise, and improves the user experience.

[0092] The balance shaft gear 1 is engaged with the driving gear ring 2 of the crankshaft to receive power from the crankshaft to drive the balance shaft gear 1 to rotate, and when the balance shaft gear 1 rotates, the balance ring 3 is driven to reciprocate along the guide support 4 to convert the rotary motion of the balance shaft gear 11 into the linear reciprocating motion of the balance ring 3, thereby effectively balancing the inertial force of the engine, improving the running stability of the engine, solving the knocking and whistling NVH problem caused by multi-stage gear transmission, reducing the noise, improving the user experience, and the balance shaft frame 100 has simple overall structure, low cost, light weight, compact structure and small space occupation.

[0093] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0094] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A balance shaft frame, characterized in that, include: A balance shaft gear, which meshes with a drive gear ring of a crankshaft; The balance ring and guide support are provided. The balance shaft gear is driven by the balance ring, and the balance ring is guided by the guide support. The balance shaft gear is configured to drive the balance ring to reciprocate along the guide support when rotating. A transmission component is connected to the balance shaft gear, and the balance shaft gear is in transmission engagement with the balance ring through the transmission component. An active space is formed inside the balance ring. The transmission component includes a driving part that extends into the active space and is adapted to push the inner wall of the active space to drive the balance ring to move. The active space is constructed as an elongated hole extending along a first direction, which intersects with the guiding direction of the guide support. The transmission component further includes a first connecting part, and the balance shaft gear is provided with an eccentrically arranged second connecting part, and the first connecting part and the second connecting part are connected and cooperated.

2. The balance shaft frame according to claim 1, characterized in that, The transmission component further includes a limiting part, the outer diameter of which is greater than the width of the movable space in a second direction, the second direction intersecting the first direction.

3. The balance shaft frame according to claim 2, characterized in that, The guiding direction is perpendicular to the first direction; And / or, the second direction is perpendicular to the first direction.

4. The balance shaft frame according to claim 1, characterized in that, One of the first connecting part and the second connecting part is configured as a connecting hole and the other is configured as a connecting post, and the connecting post and the connecting hole are inserted into each other along the axial direction of the balance shaft gear.

5. The balance shaft frame according to any one of claims 1-4, characterized in that, The balance ring is provided with a guide fitting part, the guide support is formed with a guide part, and the guide fitting part slides along the guide part; And / or, the guide support is provided with weight reduction holes; And / or, it also includes a balance shaft bracket, wherein the balance shaft gear is rotatably mounted on the balance shaft bracket.

6. The balance shaft frame according to claim 5, characterized in that, The guide part is constructed as a guide groove, and the guide mating part is constructed as a guide block protruding from the balance ring toward the guide support. The guide block extends into the guide groove and slides along the guide groove. And / or, there are multiple guiding mating parts and multiple guiding parts, and the multiple guiding mating parts and multiple guiding parts are matched one-to-one.

7. An engine, characterized in that, It includes a crankshaft and a balance shaft frame as described in any one of claims 1-6, wherein the balance shaft gear meshes with the drive gear ring of the crankshaft.

8. A vehicle, characterized in that, Includes the balance shaft frame according to any one of claims 1-6 or the engine according to claim 7.

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