Balance shaft framework, engine and vehicle

Abstract

The utility model discloses a balance shaft framework, an engine and a vehicle, the balance shaft framework comprises a balance shaft gear, the balance shaft gear is used for being meshed with a driving gear ring of a crankshaft, and the balance shaft gear is provided with a driving part; the balance shaft gear comprises a driving part, a balance ring and a guide support, the driving part is in transmission fit with the balance ring, the balance ring is in guide fit with the guide support, when the balance shaft gear rotates, the driving part is suitable for driving the balance ring to reciprocate along the guide support, and a bearing structure is arranged at the position, matched with the balance ring, of the driving part. According to the balance shaft framework, the inertia force of an engine can be effectively balanced, the operation stability of the engine is improved, meanwhile, the problems of knocking and howling NVH caused by multi-stage gear transmission are solved, noise is lowered, user experience is improved, and the balance shaft framework is simple in overall structure, low in cost, compact in structure and small in occupied space.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle manufacturing technical field especially relates to a balanced axle frame, have the engine with the balanced axle frame of this and have the vehicle with the balanced axle frame or engine of this. BACKGROUND

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

[0003] The existing engine balanced axle transmission form is mostly chain transmission and gear transmission two forms, in the gear transmission form, multi-stage gear meshing transmission, whistling and knocking noise easily appear in the engine, the human ear is very sensitive to whistling noise, subjective feeling is not good, and the large number of gears leads to heavy weight, large space occupation. UTILITARY MODEL CONTENTS

[0004] The utility model aims at at least one of the technical problems in prior art. For this purpose, the utility model provides a balanced axle frame, the balanced axle frame 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 reduce the noise, improve the user experience, and the overall structure is simple, low in cost, compact in structure and small in space occupation.

[0005] The balanced axle frame according to the utility model embodiment, including: balance shaft gear, the balance shaft gear is used for meshing with the driving gear ring of crankshaft, the balance shaft gear is equipped with driving part;Balance circle and guide support, the driving part is transmission cooperation with the balance circle, the balance circle is guided cooperation with the guide support, the driving part is suitable for driving the balance circle reciprocating motion along the guide support when the balance shaft gear rotates, the driving part is equipped with bearing structure at the cooperation place with the balance circle.

[0006] The balanced axle frame according to the utility model embodiment, by meshing the balance shaft gear with the driving gear ring of crankshaft, to receive the power from the crankshaft and drive the balance shaft gear to rotate, by making the driving part drive the balance circle reciprocating motion along the guide support when the balance shaft gear rotates, to convert the rotary motion of the balance shaft gear into the linear reciprocating motion of the balance circle, 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, thereby reducing the noise, improving the user experience, and the balanced axle frame is simple in overall structure, low in cost, compact in structure and small in space occupation.

[0007] According to the balance shaft frame of some embodiments of the utility model, the movable space is formed in the balance ring, the driving part extends into the movable space and is suitable for pushing the inner wall of the movable space to drive the balance ring to move, and the bearing structure is located between the driving part and the inner wall of the movable space.

[0008] According to the balance shaft frame of some embodiments of the utility model, the bearing structure is configured as a needle bearing.

[0009] According to the balance shaft frame of some embodiments of the utility model, the outer peripheral wall of the driving part is provided with at least one needle bearing, and / or the inner peripheral wall of the movable space is provided with at least one needle bearing.

[0010] According to the balance shaft frame of some embodiments of the utility model, the outer peripheral wall of the driving part is provided with a plurality of needle bearings, and the plurality of needle bearings are sequentially distributed along the circumference of the driving part, and / or the inner peripheral wall of the movable space is provided with a plurality of needle bearings, and the plurality of needle bearings are sequentially distributed along the circumference of the movable space.

[0011] According to the balance shaft frame of some embodiments of the utility model, the balance shaft frame further comprises a transmission part, the transmission part comprises a first connecting part and the driving part, the first connecting part is connected to one end of the driving part away from the balance ring, and the first connecting part is eccentrically connected to the balance shaft gear.

[0012] According to the balance shaft frame of some embodiments of the utility model, the balance shaft gear is provided with an eccentrically arranged second connecting part, and the first connecting part is used for connecting and matching with the second connecting part, wherein 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 and the connecting hole are inserted and matched along the axial direction of the balance shaft gear.

[0013] According to the balance shaft frame of some embodiments of the utility model, one of the guide support and the balance ring is provided with a guide sliding groove and the other is provided with a guide block, the guide block extends into the guide sliding groove and slides along the guide sliding groove, and / or further comprising a balance shaft support, and the balance shaft gear is rotatably installed on the balance shaft support.

[0014] The utility model also proposes an engine.

[0015] According to the engine of the utility model embodiment, comprising crankshaft and the balance shaft frame that any one embodiment described above is proposed, the balance shaft gear is engaged with the driving gear ring of the crankshaft.

[0016] The utility model also proposes a vehicle.

[0017] According to the vehicle of the embodiment of the present application, the balance shaft frame of any one of the above embodiments or the engine of the above embodiment is included.

[0018] The vehicle, the engine and the balance shaft frame of the above have the same advantages as the prior art, and will not be described here.

[0019] The additional aspects and advantages of the present application will be partially given in the following description, and some will become apparent from the following description, or be understood by the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0021] Figure 1 is a structural schematic view of the driving gear ring of the balance shaft frame and the crankshaft according to the embodiment of the present application;

[0022] Figure 2 is a structural schematic view of the balance shaft frame according to the embodiment of the present application;

[0023] Figure 3 is a structural schematic view of the balance ring according to the embodiment of the present application;

[0024] Figure 4 is a structural schematic view of the transmission member according to the embodiment of the present application;

[0025] Figure 5 is a structural schematic view of the driving member and the balance ring according to the embodiment of the present application;

[0026] Figure 6 is a structural schematic view of the balance shaft gear according to the embodiment of the present application;

[0027] Figure 7 is a structural schematic view of the balance shaft support according to the embodiment of the present application;

[0028] Figure 8 is a structural schematic view of the guide support according to the embodiment of the present application.

[0029] REFERENCE NUMERALS:

[0030] balance shaft frame 100,

[0031] 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 sliding groove 41, needle roller bearing 5, transmission member 6, first connecting part 61, driving part 62, balance shaft support 7, guide bearing 81, gear bearing 82. DETAILED DESCRIPTION

[0032] The 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 referring to the drawings are exemplary only, for the purpose of explaining the present application, and should not be understood as a limitation of the present application.

[0033] In the description of the present application, it should 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 is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying 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" and "second" can explicitly or implicitly include 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.

[0034] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" 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 connected 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.

[0035] 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; and the up-down direction is the vertical direction of the vehicle, i.e. the Z direction.

[0036] Reference is made below Figures 1-8 The balance shaft frame 100 according to the embodiments of the present application is described below, 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 noise and improving user experience, and the overall structure is simple, low in cost, compact in structure and small in space occupation.

[0037] As Figures 1-8As shown, according to the balance shaft frame 100 of one embodiment of the present application, comprising: balance shaft gear 1, balance ring 3 and guide support 4.

[0038] First of all, it needs to be pointed out that, in the process of engine operation, the rapid and uneven movement of the piston will generate a great inertia force, which will cause the engine to vibrate, the balance shaft frame 100 of the present application can balance these inertia forces to reduce the vibration of the engine.

[0039] Balance shaft gear 1 is used for engaging with the driving gear ring 2 of the crankshaft, and the balance shaft gear 1 is provided with a driving part 62. Figure 1 As shown, the balance shaft gear 1 is engaged 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 the power is transmitted to the balance shaft gear 1, wherein the balance shaft gear 1 is provided with a driving part 62, and the driving part 62 is used to drive the balance ring 3 to move.

[0040] Further, the driving part 62 is in transmission cooperation with the balance ring 3, that is, the balance ring 3 can receive the driving force from the balance shaft gear 1, and the driving force is transmitted to the balance ring 3 through the driving part 62 to drive the balance ring 3 to move. The balance ring 3 is in guiding cooperation with the guide support 4, that is, the guide support 4 provides guidance and support for the balance ring 3, so that the balance ring 3 can reciprocate along the guide support 4, and the balance ring 3 can stably move along the set movement track without deviation, shaking and the like, thereby maintaining the stability and reliability of the entire balance shaft frame 100.

[0041] Among them, the driving part 62 is provided with a bearing structure at the cooperation position of the balance ring 3, so that when the driving part 62 drives the balance ring 3 to move, the friction and wear between the balance ring 3 and the driving part 62 can be reduced, thereby improving the transmission accuracy and further improving the transmission stability.

[0042] Further, the driving part 62 is adapted to drive the balance ring 3 to reciprocate along the guide support 4 when the balance shaft gear 1 rotates, that is, during the actual engine operation, the crankshaft drives the balance shaft gear 1 to rotate through the driving gear ring 2 thereof, and when the balance shaft gear 1 rotates, the driving part 62 of the balance shaft gear 1 is in close cooperation with the balance ring 3 through the bearing structure, and the power is transmitted to the balance ring 3, so that the balance ring 3 can move along the guide support 4. Figure 2 As shown, the balance ring 3 can move in the up-down direction along the guide support 4, and further, with the continuous and continuous rotation of the balance shaft gear 1, the driving part 62 can drive the balance ring 3 to continuously reciprocate in the up-down direction along the guide support 4, thereby effectively balancing the inertia force of the engine and improving the stability of the overall operation of the engine.

[0043] In addition, since the balance shaft gear 1 transmits power to the balance ring 3 through the driving part 62 to convert the rotary motion into linear reciprocating motion, 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 frame 100 is reduced due to the reduction in the number of gears used, and the structural compactness is improved.

[0044] Therefore, by engaging the balance shaft gear 1 with the driving gear ring 2 of the crankshaft to receive power from the crankshaft to drive the balance shaft gear 1 to rotate, by driving the driving part 62 to drive the balance ring 3 to reciprocate along the guide support 4 when the balance shaft gear 1 rotates, the rotary motion of the balance shaft gear 1 is converted into the linear reciprocating motion of the balance ring 3, thereby effectively balancing the inertial force of the engine, improving the smoothness of the engine operation, solving the knocking and whistling NVH problems caused by multi-stage gear transmission, thereby reducing the noise and improving the user experience. The overall structure of the balance shaft frame 100 is simple, low in cost, compact in structure, and small in space occupation.

[0045] In some embodiments, as shown in Figure 3 The two ends of the balance ring 3 are configured as semicircular shapes, the two semicircular structures are spaced apart by a certain distance, and the upper end and the lower end are connected to form the whole balance ring 3. The inside of the balance ring 3 is hollow to form a moving space 31, which is a space where the driving part 62 can move. The two ends of the semicircular shape can also avoid interference between the driving part 62 and the reciprocating motion of the balance ring 3 when the driving part 62 moves in the moving space, thereby ensuring the smoothness of the motion of the balance ring 3.

[0046] The driving part 62 extends into the moving space 31 and is suitable for pushing the inner wall of the moving space 31 to drive the balance ring 3 to move. The bearing structure is located between the driving part 62 and the inner wall of the moving space 31, that is, the outer peripheral wall of the bearing structure is in abutting connection with the inner wall of the moving space 31, and the inner peripheral wall of the bearing structure can be in abutting connection with the outer peripheral wall of the driving part 62.

[0047] Specifically, the size of the moving space 31 matches the size of the driving part 62, so that the driving part 62 can extend from the balance shaft gear 1 into the moving space 31 and abut against the bearing structure. When the balance shaft gear 1 rotates to drive the driving part 62 to rotate, the driving part 62 can push the inner wall of the moving space 31 through the bearing structure to drive the balance ring 3 to move. The provision of the bearing structure also allows the driving part 62 to move smoothly and stably relative to the inner wall of the moving space 31, reducing the friction between the inner wall of the moving space 31 and the driving part 62.

[0048] 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, and the weight of the bearing structure needs to be subtracted.

[0049] In some embodiments, as shown in Figs. 1 and 2, the bearing structure is configured as a needle bearing 5. Figure 3 and Figure 5 The bearing structure is configured as a needle bearing 5.

[0050] Specifically, the needle bearing 5 is very compact in structure, can reduce the space occupation, further improve the structural compactness, and can bear a larger radial load and transmit a larger power with high transmission efficiency. Thus, by arranging the needle bearing 5 between the driving part 62 and the inner wall of the activity space 31, it can be ensured that the driving part 62 can smoothly and efficiently push the balance ring 3 to move, and it is beneficial to reduce vibration and noise.

[0051] In some embodiments, the outer peripheral wall of the driving part 62 is provided with at least one needle bearing 5, i.e., the outer peripheral wall of the driving part 62 can be provided with one, two or even more needle bearings 5. Thus, support can be provided for the driving part 62 to stably rotate in the activity space 31, while reducing friction and wear between the driving part 62 and the inner wall of the activity space 31, ensuring smooth rotation of the driving part 62 to drive the balance ring 3 to move, and improving the movement stability and reliability of the balance ring 3 and the driving part 62.

[0052] In addition, compared with arranging the needle bearing 5 on the inner peripheral wall of the activity space 31, arranging the needle bearing 5 on the outer peripheral wall of the driving part 62 can reduce the number of needle bearings 5, thereby further reducing the overall weight of the balance shaft frame 100, reducing costs, and reducing friction loss. Since the needle bearing 5 is arranged on the outer peripheral wall of the driving part 62, it is also easier to install, detect and maintain the needle bearing 5, which is flexible and convenient, and improves the reliability of the needle bearing 5.

[0053] In actual design, by arranging the needle bearing 5 on the outer peripheral wall of the driving part 62, the weight of the balance ring 3 can be designed without considering the needle bearing 5, so that the balance rate calculation is more accurate.

[0054] In other embodiments, the inner peripheral wall of the activity space 31 is provided with at least one needle bearing 5, i.e., the inner peripheral wall of the activity space 31 can be provided with one, two, three or even more needle bearings 5. Thus, support can be provided for the driving part 62 to stably rotate in the activity space 31, preventing the driving part 62 from deviating or shaking during operation, and reducing friction and wear between the driving part 62 and the inner wall of the activity space 31, ensuring smooth rotation of the driving part 62 to drive the balance ring 3 to move, and improving the movement stability and reliability of the balance ring 3 and the driving part 62.

[0055] In some embodiments, the outer circumferential wall of the driving part 62 is provided with a plurality of needle bearings 5, that is, the outer circumferential wall of the driving part 62 can be provided with two, three, four or even more needle bearings 5. The provision of a plurality of needle bearings 5 can enable the driving part 62 to be in abutting contact with the inner wall of the activity space 31 through the plurality of needle bearings 5, so that when the driving part 62 rotates, the load can be dispersed to each needle bearing 5, the carrying capacity of the entire driving part 62 is improved, and the support of the plurality of needle bearings 5 to the driving part 62 can ensure that the driving part 62 is more stable during movement.

[0056] Moreover, the plurality of needle bearings 5 are sequentially distributed along the circumference of the driving part 62, that is, the plurality of needle bearings 5 are uniformly distributed on the outer circumferential wall of the driving part 62. In this way, when the driving part 62 rotates, the inner wall of the activity space 31 can be pushed by the needle bearings 5 at each circumferential position of the driving part 62, thereby stably moving the balance ring 3, and the load can be uniformly dispersed to each needle bearing 5, preventing a single needle bearing 5 from bearing too much load and causing unstable movement.

[0057] Specifically, as shown in Figure 5 the outer circumferential wall of the driving part 62 is provided with a plurality of needle bearings 5, and the plurality of needle bearings 5 are sequentially distributed along the circumference of the driving part 62.

[0058] In other embodiments, the inner circumferential wall of the activity space 31 is provided with a plurality of needle bearings 5, that is, the inner circumferential wall of the activity space 31 can be provided with two, three or even more needle bearings 5. The provision of a plurality of needle bearings 5 can enable the driving part 62 to be in abutting contact with the inner wall of the activity space 31 through the plurality of needle bearings 5, so that when the driving part 62 rotates, the driving part 62 can be supported in all directions, thereby improving the rotation stability and reliability of the driving part 62, and the plurality of needle bearings 5 can further reduce the friction and wear between the outer circumferential wall of the driving part 62 and the inner wall of the activity space 31, thereby prolonging the service life of the balance ring 3 and the driving part 62.

[0059] Moreover, the plurality of needle bearings 5 are sequentially distributed along the circumference of the activity space 31, so that the driving part 62 can be uniformly supported in all directions, reducing the deviation and shaking of the driving part 62 during movement, thereby improving the movement accuracy, and ensuring that the driving part 62 can be stably and reliably supported at all circumferential positions of the activity space 31, improving the carrying effect of the balance ring 3 on the driving part 62.

[0060] Specifically, as shown in Figure 3 the inner circumferential wall of the activity space 31 is provided with a plurality of needle bearings 5, and the plurality of needle bearings 5 are sequentially distributed along the circumference of the activity space 31.

[0061] In some embodiments, as shown in Figure 4As shown, the balance shaft frame 100 further comprises a transmission member 6, which comprises a first connecting portion 61 and a driving portion 62. The first connecting portion 61 is connected to the driving portion 62 at an end away from the balance ring 3, i.e. the driving portion 62 is close to the balance ring 3 and interacts with the balance ring 3 in the active space 31, and the first connecting portion 61 is close to the balance shaft gear 1 to be connected to the balance shaft gear 1.

[0062] Further, the first connecting portion 61 is eccentrically connected to the balance shaft gear 1, i.e. the connecting point of the first connecting portion 61 to the balance shaft is not the center of the balance shaft gear 1, but deviates from the center to a position, so that the driving portion 62 performs eccentric motion when the balance shaft gear 1 rotates, and in turn the driving portion 62 drives the balance ring 3 to perform reciprocating linear motion.

[0063] In some embodiments, the balance shaft gear 1 is provided with a second connecting portion 11 arranged eccentrically, and the first connecting portion 61 is configured to be connected and matched with the second connecting portion 11, i.e. the first connecting portion 61 is matched in shape and size with the second connecting portion 11 arranged eccentrically on the balance shaft gear 1, and the positions correspond, so that the first connecting portion 61 can be connected and matched with the second connecting portion 11, thereby realizing the connection of the balance shaft gear 1 and the transmission member 6.

[0064] Further, 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. 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 the balance shaft gear 1 in the axial direction, and the connecting column and the connecting hole are matched in shape and size, so that the connecting column can be smoothly inserted into the connecting hole 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 and the balance shaft gear 1 are firmly connected, so that when the balance shaft gear 1 rotates, the balance shaft gear 1 can stably and reliably drive the driving portion 62 to perform eccentric motion.

[0065] Specifically, as shown in Figure 2 and Figure 6 , 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 the balance shaft gear 1 in the axial direction, and the connecting column is inserted into the connecting hole to realize the insertion and matching, thereby realizing the connection of the transmission member 6 and the balance shaft gear 1.

[0066] In actual design, as shown in Figure 4As shown, the radial dimension of the driving part 62 is greater than the radial dimension of the first connecting part 61, so as to improve the carrying capacity of the driving part 62, wherein the middle position of the driving part 62 in the up-down direction can be provided as a flat section, so that the flat section can always be in contact with the rolling needle bearing 5 on the inner wall of the moving space 31, thereby improving the carrying capacity of the rolling needle bearing 5 and avoiding the deflection of the balance ring 3 during movement.

[0067] In some embodiments, one of the guide support 4 and the balance ring 3 is provided with the guide sliding groove 41 and the other is provided with the guide block 32, and the guide block 32 extends into the guide sliding groove 41 and slides along the guide sliding groove 41.

[0068] That is, the guide sliding groove 41 can be provided on the guide support 4, and the guide block 32 can be provided on the balance ring 3, or the guide block 32 can be provided on the guide support 4, and the guide sliding groove 41 can be provided on the balance ring 3, and the shape and size of the guide block 32 are matched with the shape and size of the guide sliding groove 41, so that the guide block 32 can extend into the guide sliding groove 41 and smoothly slide along the guide sliding groove 41, thereby achieving the linear reciprocating motion of the balance ring 3.

[0069] Specifically, as shown in Figure 2 , Figure 3 and Figure 8 , the balance ring 3 is formed with the guide block 32 extending towards the guide support 4 on the side surface thereof, and the guide support 4 is provided with the guide sliding groove 41 extending in the up-down direction, and the guide block 32 extends into the guide sliding groove 41, so that in practice, when the balance shaft gear 1 rotates, the driving part 6 can perform eccentric motion to drive the balance ring 3 to move, so that the guide block 32 of the balance ring 3 performs linear reciprocating motion in the guide sliding groove 41, thereby balancing the inertial force of the engine and reducing vibration.

[0070] As shown in Figure 3 , two guide blocks 32 can be provided, one on each side of the balance ring 3, and correspondingly, as shown in Figure 8 , two guide sliding grooves 41 corresponding to the two guide blocks 32 are provided on the guide support 4, and the two guide blocks 32 extend into the corresponding guide sliding grooves 41, so that the balance ring 3 can move up and down more stably, preventing deviation, shaking and noise.

[0071] In actual design, as shown in Figure 8 , a guide bearing 81 can also be provided in the guide sliding groove 41 to reduce the friction between the guide block 32 and the guide sliding groove 41, so that the guide block 32 can slide more smoothly along the guide sliding groove 41 to achieve linear reciprocating motion.

[0072] In some embodiments, as shown in Figure 2 andFigure 7 As shown, the balance shaft frame 100 further comprises a balance shaft support 7, which is used to support and fix the balance shaft gear 1, so as to ensure smooth movement of the balance shaft gear 1.

[0073] The balance shaft gear 1 is rotatably installed on the balance shaft support 7, that is, the balance shaft gear 1 can rotate relative to the balance shaft support 7, so that the driving gear ring 2 of the crankshaft can drive the balance shaft gear 1 to rotate and transmit power. Figure 6 As shown, the balance shaft gear 1 is rotatably installed on the balance shaft support 7 through the gear bearing 82.

[0074] In actual design, bolt holes can also be arranged 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 plane, and then the bolts are passed through the bolt holes for fastening, so as to ensure smooth assembly without inclination, thereby ensuring stable support of the balance shaft frame 100. Compared with the traditional integrated balance shaft, the balance shaft frame 100 of the utility model reduces the balance shaft mounting shell, thereby further reducing the weight and cost of the balance shaft frame 100, reducing assembly error and reducing the risk of knocking and whistling.

[0075] Then, in the assembly process, the gear bearing 82 and the first connecting part 61 are shrink-fitted into the balance shaft gear 1 to form a balance shaft gear 1 assembly, so that the balance shaft gear 1, the gear bearing 82 and the first connecting part 61 can be firmly connected without slipping during operation. Then, the balance shaft gear 1 is assembled to the balance shaft support 7 to form a transmission system, and the rotating torque of the crankshaft is transmitted to the balance shaft frame 100 through the engagement 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 utility model further reduces the number of bearings, thereby further reducing the cost, reliability problems and vibration noise problems caused by bearing wear, and the reduction in the number of bearings reduces friction loss, which positively affects the reduction of engine oil consumption.

[0076] Then, the balance ring 3 can be assembled to the driving part 62 to form the balance shaft frame 100, so as to balance the reciprocating inertia force of the engine. Compared with the traditional integrated balance shaft, the balance shaft frame 100 of the utility model reduces the number of gears, reduces the overall weight of the balance shaft frame 100 and reduces gear noise.

[0077] Finally, the guide bearing 81 can be press-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.

[0078] The utility model discloses still propose a kind of engine.

[0079] According to the engine of the utility model embodiment, the balance shaft gear 1 is engaged with the driving gear ring 2 of the crankshaft.

[0080] 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 rotational motion of the balance shaft gear 1 into 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 engine operation, improving the NVH performance, improving the user experience, and since the overall structure of the balance shaft frame 100 is simple, the space occupied is small, the structural compactness of the engine is also improved, which is beneficial to the lightweight of the engine.

[0081] The utility model discloses still propose a kind of vehicle.

[0082] According to the vehicle of the utility model embodiment, the balance shaft frame 100 or the engine of any one of the above embodiments is included.

[0083] According to the vehicle of the utility model embodiment, by setting the balance shaft frame 100 or the engine described above, the driving stability and comfort of the vehicle are effectively improved, the noise is reduced, and the user experience is improved.

[0084] 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 driving part 62 drives the balance ring 3 to reciprocate along the guide support 4, so as to convert the rotational motion of the balance shaft gear 1 into 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, thereby reducing the noise, improving the user experience, and the balance shaft frame 100 has a simple overall structure, low cost, compact structure and small space occupation.

[0085] It should be noted that, due to the small overall structure size of the balance shaft frame 100, the balance shaft frame 100 can be arranged below the third main bearing seat (i.e. the installation position of the third main bearing on the engine crankshaft), thereby solving the problem of inconvenience caused by the large overall structure size of the balance shaft frame 100, and ensuring that the moment is centered below the third main bearing seat, without additional overturning moment, and without the need for double-axle symmetrical design to balance the overturning moment.

[0086] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" 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.

[0087] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes 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, and the balance shaft gear is provided with a drive unit; The balance ring and guide support are provided. The drive unit is in transmission cooperation with the balance ring, and the balance ring is in guiding cooperation with the guide support. When the balance shaft gear rotates, the drive unit is adapted to drive the balance ring to reciprocate along the guide support. The drive unit is provided with a bearing structure at the cooperation point with the balance ring.

2. The balance shaft frame according to claim 1, characterized in that, An active space is formed within the balance ring. The drive unit 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 bearing structure is located between the drive unit and the inner wall of the active space.

3. The balance shaft frame according to claim 2, characterized in that, The bearing structure is a needle roller bearing.

4. The balance shaft frame according to claim 3, characterized in that, The outer peripheral wall of the drive unit is provided with at least one of the needle roller bearings; And / or, the inner peripheral wall of the active space is provided with at least one of the needle roller bearings.

5. The balance shaft frame according to claim 4, characterized in that, The outer peripheral wall of the drive unit is provided with a plurality of needle roller bearings, and the plurality of needle roller bearings are distributed sequentially along the circumference of the drive unit; And / or, the inner peripheral wall of the active space is provided with a plurality of needle roller bearings, and the plurality of needle roller bearings are distributed sequentially along the circumference of the active space.

6. The balance shaft frame according to any one of claims 1-5, characterized in that, It also includes a transmission component, which includes a first connecting part and a driving part. The first connecting part is connected to the end of the driving part away from the balance ring, and the first connecting part is eccentrically connected to the balance shaft gear.

7. The balance shaft frame according to claim 6, characterized in that, The balance shaft gear is provided with an eccentrically arranged second connecting part, and the first connecting part is used to connect and cooperate with the second connecting part. In this configuration, one of the first connecting portion and the second connecting portion is configured as a connecting hole and the other is configured as a connecting post, wherein the connecting post and the connecting hole are inserted into each other along the axial direction of the balance shaft gear.

8. The balance shaft frame according to any one of claims 1-5, characterized in that, One of the guide support and the balance ring is provided with a guide groove and the other is provided with a guide block. The guide block extends into the guide groove and slides along the guide groove. And / or, it also includes a balance shaft bracket, wherein the balance shaft gear is rotatably mounted on the balance shaft bracket.

9. An engine comprising a crankshaft and a balance shaft frame according to any one of claims 1-8, wherein the balance shaft gear meshes with a drive gear ring of the crankshaft.

10. A vehicle, characterized in that, Includes the balance shaft frame according to any one of claims 1-8 or the engine according to claim 9.

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