CN211494224U - 3D prints back knuckle, suspension system and car - Google Patents

Abstract

The utility model provides a 3D prints back knuckle, suspension system and car, wherein, the 3D who has shaft hole connecting seat and linking arm prints back knuckle and still includes: a hollow weight reduction structure; the connecting structure is arranged on the shaft hole connecting seat; reinforcing ribs with different thicknesses and irregular shapes are formed along the stress path, at least part of the connecting arm is connected with the connecting structure through the reinforcing ribs, and at least part of the connecting arm is connected with the other connecting arm and/or the shaft hole connecting seat through the other reinforcing ribs; and (3) a hollow structure. The utility model discloses a 3D prints back knuckle is through setting up the strengthening rib along the atress route on the linking arm to combine hollow structure and fretwork to subtract the setting of heavy structure, on guaranteeing that 3D prints back knuckle has sufficient atress intensity's basis, the weight of 3D printing back knuckle that has significantly reduced is favorable to realizing the lightweight of suspension system and car, and guarantees the maneuverability and the travelling comfort of car.

Description

3D prints back knuckle, suspension system and car

Technical Field

The utility model relates to an automobile parts technical field, in particular to 3D prints back knuckle, suspension system and car.

Background

The rear suspension system is an important component of the chassis structure. The design of the rear suspension system not only influences the stability and comfort of the chassis, but also influences the structural design of the vehicle body. The rear steering knuckle is one of main parts on an automobile rear suspension system, is complex in shape, integrates the structural characteristics of four parts such as a shaft, a sleeve, a disc ring and a fork frame, and mainly comprises three parts, namely a support shaft neck, a flange plate and a fork frame. The main function of the device is to connect each swing arm, a hub bearing and a brake caliper of the multi-link independent suspension to bear the load transmitted by the wheel. And simultaneously bear the impact load transmitted by the tire, the rear trailing arm, the rear pillar and the rear suspension transverse control arm. In order to ensure accurate positioning of the rear wheel during driving, the rear wheel is generally required to have high strength, size and position accuracy. And light weight is required for ensuring the ride-through and economy of the automobile. Therefore, the structural design of the steering knuckle comprehensively considers the stress condition of each connecting part, and the weight is reduced on the premise of meeting the stress strength. The common steering knuckle has a simple structure and is heavy under the condition of meeting the strength requirement.

The geometrical shape and the stress condition of the rear steering knuckle are complex, and in order to ensure the strength and the durability, the rear steering knuckle is obtained by adopting a nodular cast iron process at present. The existing rear steering knuckle is heavy in structure and poor in four-wheel drive expansibility due to the limitation of arrangement space and bearing characteristics of the rear steering knuckle. The product has poor process feasibility, assembly convenience and structural reliability.

Disclosure of Invention

The embodiment of the utility model provides a technical purpose that will reach provides a 3D prints back knuckle, suspension system and car for solve present back knuckle and be subject to the manufacturing process, arrange the space and bear the weight of characteristics, have the structure heavy, the poor scheduling problem of technology feasibility.

In order to solve the technical problem, the embodiment of the utility model provides a 3D prints back knuckle, include: the middle part is provided with the shaft hole connecting seat in shaft hole and a plurality of linking arm by the outside extension of shaft hole connecting seat, and it is provided with a plurality of mounting holes to encircle the shaft hole on the shaft hole connecting seat, is provided with the installation department that is used for connecting corresponding vehicle part on the linking arm, and integrated into one piece's 3D prints the back knuckle, still includes:

the hollow weight reduction structure is arranged on the 3D printed steering knuckle;

the hole wall of the mounting hole is provided with a connecting structure extending along a preset direction, and the preset direction is parallel to the axial direction of the shaft hole;

the reinforcing ribs are arranged on the connecting arms, the reinforcing ribs are formed into three-dimensional structures with different thicknesses and irregular shapes along stress paths, at least part of the connecting arms are connected with the connecting structures through the reinforcing ribs, and at least part of the connecting arms are connected with the other connecting arm and/or the shaft hole connecting seat through another reinforcing rib;

at least one connecting arm and/or reinforcing rib is provided with a hollow structure.

Specifically, as above-mentioned 3D prints back knuckle, connection structure forms tube-shape or half tube-shape structure, and the fretwork subtracts heavy structure and includes: the first hollow structure is arranged on the side wall of the cylindrical or semi-cylindrical structure.

Preferably, as above-mentioned 3D prints back knuckle, the mounting hole forms to be the shoulder hole, and the fretwork subtracts heavy structure includes: and the second hollow structure is arranged on the hole wall and/or the step surface of the stepped hole.

Specifically, as above-mentioned 3D prints back knuckle, the quantity of mounting hole is four, includes: the first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole are sequentially arranged corresponding to four corners of the preset square, wherein the middle point of the preset square is positioned on the axis of the shaft hole;

the plurality of connecting arms includes:

the first connecting arm corresponds to the first mounting hole and extends along a preset direction, an H-arm connecting rod mounting part is arranged at one end, close to the shaft hole connecting seat, of the first connecting arm, and an upper end arm mounting part is arranged at one end, far away from the shaft hole connecting seat, of the first connecting arm;

a second connecting arm which corresponds to the second mounting hole and extends along the preset direction, wherein a toe-in pull rod mounting part is arranged at one end, far away from the shaft hole connecting seat, of the second connecting arm; and the number of the first and second groups,

and the third connecting arm corresponds to the third mounting hole and extends along the preset direction, and an H-arm mounting part is arranged at one end, far away from the shaft hole connecting seat, of the third connecting arm.

Preferably, as described above for the 3D post-printing knuckle, the plurality of reinforcing ribs include:

the first reinforcing rib is connected with the toe-in pull rod mounting part and a connecting structure corresponding to the third mounting hole;

the second reinforcing rib is connected with the toe-in pull rod mounting part and corresponds to the outer side wall between the second mounting hole and the third mounting hole on the shaft hole connecting seat;

the third reinforcing rib is connected with the H-arm mounting part and the outer side wall of the shaft hole connecting seat corresponding to the third mounting hole;

and the fourth reinforcing rib is connected with the first connecting arm and the connecting structure corresponding to the fourth mounting hole.

Specifically, as for the 3D post-printing knuckle, the first reinforcing rib, the second reinforcing rib and the third reinforcing rib are all provided with hollow structures.

Preferably, as above 3D prints back knuckle, the fretwork subtracts heavy structure and still includes: and the third hollow structure is arranged on the non-stressed path of the first connecting arm and the second connecting arm.

Specifically, as described above for the 3D post-printing knuckle, the plurality of connecting arms further include:

the two caliper connecting arms extend outwards and are perpendicular to the side wall of the shaft hole connecting seat, and a caliper mounting part is arranged at one end, far away from the shaft hole connecting seat, of each caliper connecting arm;

wherein, the first calliper linking arm of two calliper linking arms corresponds the third mounting hole setting, and the second calliper linking arm corresponds the fourth mounting hole setting.

Preferably, as described above for the 3D post-printing knuckle, the plurality of reinforcing ribs include:

and the fifth reinforcing rib is connected with the caliper mounting part on the second caliper connecting arm and the connecting structure corresponding to the first mounting hole.

Further, as for the 3D printing rear steering knuckle, a branch structure extending to the connecting arm of the first caliper is arranged on the third reinforcing rib.

Specifically, as for the 3D post-printing knuckle as described above, the first connecting arm, the second connecting arm and the third connecting arm are all provided with brake disc mounting structures protruding away from the preset direction.

Yet another preferred embodiment of the present invention provides a suspension system, including: go up swing arm, H arm connecting rod, toe-in pull rod, wheel hub bearing, calliper, brake disc and as above 3D print back knuckle, wherein, 3D print back knuckle respectively with go up swing arm, H arm connecting rod, toe-in pull rod, wheel hub bearing, calliper and brake disc and be connected.

The utility model discloses a still another preferred embodiment provides an automobile, include: a suspension system as described above.

Compared with the prior art, the embodiment of the utility model provides a pair of 3D prints back knuckle, suspension system and car has following beneficial effect at least:

the utility model discloses an in the embodiment, 3D that 3D printing technique obtained prints back knuckle is through setting up the strengthening rib along the atress route on the linking arm to combine hollow structure 5 and the setting that the fretwork subtracts heavy structure, on guaranteeing that 3D prints back knuckle has sufficient atress intensity's basis, 3D that has significantly reduced prints the weight of back knuckle, be favorable to realizing the lightweight of suspension system and car, and guarantee the maneuverability and the travelling comfort of car.

Drawings

Fig. 1 is a front view of a 3D printed knuckle according to an embodiment of the present invention;

fig. 2 is a front oblique view of a 3D printed rear knuckle according to an embodiment of the present invention;

fig. 3 is a back oblique view of a 3D printed knuckle according to an embodiment of the present invention;

fig. 4 is a left side view of the 3D printed knuckle according to the embodiment of the present invention;

fig. 5 is a right side view of a 3D post-printing knuckle according to an embodiment of the present invention;

fig. 6 is a bottom view of a 3D post-printing knuckle provided by an embodiment of the present invention;

fig. 7 is a cross-sectional view of a 3D post-printing knuckle according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a suspension system according to an embodiment of the present invention;

fig. 9 is a second schematic structural diagram of a suspension system according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a rear brake assembly according to an embodiment of the present invention;

fig. 11 is a schematic structural view of an upper swing arm provided in an embodiment of the present invention;

fig. 12 is a schematic structural diagram of an H-arm according to an embodiment of the present invention;

fig. 13 is a schematic structural view of an H-arm link according to an embodiment of the present invention;

fig. 14 is a schematic structural view of a toe-in pull rod according to an embodiment of the present invention;

fig. 15 is a schematic structural view of a hub bearing provided in an embodiment of the present invention.

[ description of reference ]

1. The shaft hole connecting seat; 101. a shaft hole; 102. mounting holes; 1021. a first mounting hole; 1022. a second mounting hole; 1023. a third mounting hole; 1024. a fourth mounting hole; 1025. a second hollow structure; 103. A connecting structure; 1031. a first hollow structure; 201. a first connecting arm; 2011. an H-arm link mounting section; 2012. an upper end arm mounting section; 202. a second connecting arm; 2021. a toe-in pull rod mounting section; 203. a third connecting arm; 2031. an H-arm mounting section; 204. a caliper connecting arm; 2041. a first caliper connecting arm; 205. a third hollow structure; 2042. a second caliper connecting arm; 301. a first reinforcing rib, 302, a second reinforcing rib; 303. a third reinforcing rib; 304. a fourth reinforcing rib; 305. fifthly, strengthening the tendons; 4. a brake disc mounting structure; 5. a hollow structure; 100. 3D printing a rear knuckle; 200. an upper swing arm; 2001. an upper swing arm fixing part; 2002. a first fixed part; 300. an H arm; 3001. a first body portion; 30011. an H-arm link fixing portion; 30012. a first subframe fixing portion; 3002. a second body portion; 30021. an H-arm fixing part; 30022. a second subframe fixing portion; 30023. a recessed structure; 400. an H-arm connecting rod; 4001. a second fixed part; 4002. a third fixed part; 500. a toe-in pull rod; 5001. a toe-in tension rod fixing part; 5002. a fourth fixing part; 600. a hub bearing; 6001. a first flange; 6002. a second flange; 700. a caliper; 800. a brake disc; 900. a rear fender.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments. In the following description, specific details are provided, such as specific configurations and components, merely to facilitate a thorough understanding of embodiments of the invention. Thus, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of the processes should be determined by the functions and the internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also be determined from a and/or other information.

Referring to fig. 1 to 7, a preferred embodiment of the present invention provides a 3D printed rear knuckle, including: the middle part is provided with shaft hole connecting seat 1 of shaft hole 101 and a plurality of linking arm by the outside extension of shaft hole connecting seat 1, and shaft hole connecting seat 1 goes up to encircle shaft hole 101 and is provided with a plurality of mounting holes 102, is provided with the installation department that is used for connecting corresponding vehicle part on the linking arm, and integrated into one piece's 3D prints the back knuckle, still includes:

the hollow weight reduction structure is arranged on the 3D printed steering knuckle;

the hole wall of the mounting hole 102 is provided with a connecting structure 103 extending along a preset direction, and the preset direction is parallel to the axial direction of the shaft hole 101;

the reinforcing ribs are arranged on the connecting arms, the reinforcing ribs are formed into three-dimensional structures with different thicknesses and irregular shapes along stress paths, at least part of the connecting arms are connected with the connecting structures 103 through the reinforcing ribs, and at least part of the connecting arms are connected with the other connecting arm and/or the shaft hole connecting seat 1 through another reinforcing rib;

at least one of the connecting arms and/or the reinforcing bars is provided with a hollow structure 5.

In a specific embodiment of the utility model, based on the function of the rear knuckle of the automobile, the 3D printed rear knuckle of the utility model comprises a shaft hole connecting seat 1 for connecting with a hub bearing, wherein the outer ring of the hub bearing is inserted into a shaft hole 101 of the shaft hole connecting seat 1, and a flange of the hub bearing can be fixedly connected with the shaft hole connecting seat 1 through a plurality of mounting holes 102 arranged around the shaft hole 101, so that the connection of the hub bearing is ensured, and the installation of a driving half shaft is further facilitated; a plurality of connecting arms extending from the outer side wall or the end face of the shaft hole connecting seat 1 are provided with mounting parts for connecting corresponding vehicle parts, and the plurality of vehicle parts are connected with a 3D printed steering knuckle to form a suspension system; the extending direction of the connecting arm is set according to the stress path of the installation part after stress analysis, and is perpendicular to the axial direction of the shaft hole 101 or forms a preset angle with the axial direction.

Be provided with the fretwork on the knuckle after 3D prints and subtract heavy structure, through reducing unnecessary solid structure, be favorable to realizing 3D and print the lightweight of rear knuckle, preferably, the position that the fretwork subtracts heavy structure is located 3D and prints on the non-atress route after the knuckle carries out the atress analysis, can not lead to the fact the influence to transmission etc. of power under the prerequisite that subtracts heavy.

The 3D printed steering knuckle further comprises a connecting structure 103 formed by extending the hole wall of the mounting hole 102 in a preset direction parallel to the axial direction of the shaft hole 101; still be provided with the strengthening rib on the linking arm, the quantity of strengthening rib can be set for according to actual demand, is connected through the strengthening rib between at least partial linking arm and the connection structure 103 for the linking arm accessible connection structure 103 carries out the dispersion and the transmission of power, and is favorable to reducing the thickness and the length of strengthening rib, and then is favorable to realizing the lightweight of 3D printing back knuckle. Meanwhile, optionally, at least part of the connecting arm and the other connecting arm can be connected through another reinforcing rib to realize the transmission of force between the connecting arms, and/or at least part of the connecting arm can be directly connected with the axle hole connecting seat 1 through another reinforcing rib, and the structural strength and rigidity of the connecting arm and the whole 3D printed knuckle can be improved by forming a polygon including a space triangle, so that the realization of the function that the 3D printed knuckle is connected with other vehicle parts and forms a suspension system is ensured, and the reduction of the solid volume of the connecting arm and the axle hole connecting seat 1 is facilitated. The reinforcing ribs are arranged along the stress path and are in a three-dimensional structure with different thicknesses and irregular shapes, the three-dimensional structure is different from the conventional regular reinforcing ribs, the characteristics of the 3D printing technology are utilized, the structural strength of the connecting arm is improved, meanwhile, the unnecessary solid parts for keeping the shapes of the reinforcing ribs are reduced, and the light weight of the 3D printed steering knuckle is facilitated.

Preferably, at least one connecting arm and/or reinforcing rib is provided with a hollow structure 5, and under the condition that the connecting strength is ensured, the hollow structure 5 is favorable for further reducing the weight of the whole 3D printed steering knuckle.

To sum up, in the embodiment of the utility model discloses a through set up the strengthening rib along the atress route on the linking arm to combine hollow structure 5 and fretwork to subtract the setting of heavy structure, on guaranteeing that 3D prints the basis that the back knuckle has sufficient atress intensity, the weight of the back knuckle is printed in 3D that has significantly reduced, is favorable to realizing the lightweight of suspension system and car, and guarantees the maneuverability and the travelling comfort of car.

Preferably, 3D prints back knuckle in the above-mentioned embodiment adopts additive manufacturing technique to utilize aluminum alloy powder integrated into one piece, has guaranteed the realization of above-mentioned structural design, has avoided setting up unnecessary auxiliary structure simultaneously, has reduced the entity volume of 3D printing back knuckle, and adopts the aluminum alloy of light, further has reduced the weight of 3D printing back knuckle, makes the utility model discloses a 3D prints back knuckle and subtracts weight 35% to 45% in 3D printing back knuckle that equally adopts light material to make, makes the mechanical properties, intensity, rigidity and the fatigue durability of 3D printing back knuckle improve about 5% simultaneously. Specifically, in one embodiment, the aluminum alloy powder comprises the following components in percentage by weight: 9% -11% silicon; 0.2-0.45% magnesium; less than or equal to 0.55% iron; less than or equal to 0.05% copper; less than or equal to 0.45% manganese; less than or equal to 0.1% zinc; less than or equal to 0.15% titanium; less than or equal to 0.05% nickel; less than or equal to 0.05% lead; less than or equal to 0.05% tin; the balance being aluminum. The aluminum alloy powder material in this embodiment is ideal, and in actual production, there may be some impurities other than the above-mentioned components, which are not removable, and the weight percentage of these impurities in the aluminum alloy powder material is less than or equal to 0.15%. Each of the non-removable impurities is present in the predetermined aluminum alloy powder material in an amount of less than or equal to 0.05% by weight. Adopt other light materials to replace the aluminum alloy also belong to the protection scope of the utility model.

Specifically, the mounting portion is formed in an annular structure or provided with a spherical hole; preferably, the mounting part is also provided with a rubber bushing for buffering, which is beneficial to reducing the abrasion, vibration and noise of the equipment, has an anti-corrosion effect, and can also facilitate the maintenance of mechanical equipment and simplify the structure and the manufacturing process of the equipment.

Referring to fig. 2, in particular, as described above for the 3D post-printing steering knuckle, the connecting structure 103 is formed in a cylindrical or semi-cylindrical structure, and the hollowed-out weight-reducing structure includes: and a first hollow structure 1031 disposed on a sidewall of the cylindrical or semi-cylindrical structure.

The utility model discloses a particular embodiment in connection structure 103 forms to tube-shape or half tubular structure, is favorable to guaranteeing the realization of the normal function of mounting hole 102, and connection structure 103 forms to ring or semicircle ring simultaneously on the cross-section of perpendicular to axis, is convenient for disperse power, improves the stress intensity of 3D printing back knuckle. A first hollow structure 1031 is arranged on the side wall of the cylindrical or semi-cylindrical structure, wherein the first hollow structure 1031 is designed in a hollow manner at a place where force transmission is not performed by performing stress analysis on the connecting structure 103, so that the stress strength of the knuckle after 3D printing is ensured, and the quality of the knuckle after 3D printing is reduced; the specific form of the first hollowed-out structure 1031 depends on the shape of the unstressed region, and is not limited herein.

Referring to fig. 3, preferably, as for the 3D printed steering knuckle described above, the mounting hole 102 is formed as a stepped hole, and the hollowed-out weight-reducing structure includes: and the second hollow structure 1025 is arranged on the hole wall and/or the step surface of the stepped hole.

In another preferred embodiment of the present invention, the mounting hole 102 is formed as a stepped hole to provide a receiving space for the bolt head or the nut, and protect the bolt head or the nut, so that a specific tool must be used during installation or disassembly, which is beneficial to prevent the bolt head or the nut from loosening due to collision of an external object, and further ensure the connection stability. Simultaneously, be provided with second hollow out construction 1025 on the pore wall of shoulder hole and the step face, further alleviate the weight of shaft hole connecting seat 1 under the prerequisite of guaranteeing normal connection, and then be favorable to realizing the lightweight of 3D printing back knuckle.

Referring to fig. 1 to 7, in particular, as described above for the 3D post-printing knuckle, the number of the mounting holes 102 is four, including: a first mounting hole 1021, a second mounting hole 1022, a third mounting hole 1023 and a fourth mounting hole 1024 which are sequentially arranged corresponding to four corners of a preset square, wherein the middle point of the preset square is positioned on the axis of the shaft hole 101;

the plurality of connecting arms includes:

a first connecting arm 201 corresponding to the first mounting hole 1021 and extending along a preset direction, wherein an H-arm connecting rod mounting part 2011 is arranged at one end of the first connecting arm 201 close to the shaft hole connecting seat 1, and an upper end arm mounting part 2012 is arranged at one end of the first connecting arm 201 far away from the shaft hole connecting seat 1;

a toe-in pull rod mounting part 2021 is arranged at one end, away from the axle hole connecting seat 1, of the second connecting arm 202 corresponding to the second mounting hole 1022 and extending along the preset direction; and the number of the first and second groups,

and an H-arm mounting portion 2031 is provided at one end of the third connecting arm 203 far from the axle hole connecting base 1, corresponding to the third mounting hole 1023 and extending along the preset direction.

The quantity of mounting hole 102 on the shaft hole connecting seat 1 is mainly confirmed with arranging according to the quantity of the hole that the ring flange corresponds on the wheel hub bearing with arranging the utility model discloses a in a concrete embodiment, arrange along the square with a plurality of mounting holes 102 and carry out concrete explanation, wherein, the quantity of mounting hole 102 is four and corresponds with four angles of square respectively, and the mid point of square falls on the axis in shaft hole 101 for be connected the back through ring flange and shaft hole connecting seat 1, restrict the wheel hub bearing, be favorable to guaranteeing 3D and print back knuckle and wheel hub bearing's stability of being connected.

Wherein the plurality of connecting arms include: correspond first connecting arm 201 of first mounting hole 1021, second connecting arm 202 that corresponds the setting of second mounting hole 1022 and third connecting arm 203 that corresponds the setting of third mounting hole 1023, and first connecting arm 201, second connecting arm 202 and third connecting arm 203 all extend along predetermineeing the direction, and be provided with H arm connecting rod installation department 2011 respectively, upper end arm installation department 2012, toe-in pull rod installation department 2021 and H arm installation department 2031, make the H arm connecting rod that corresponds on the car, the upper end arm, toe-in pull rod and H arm all are located same one side of shaft hole connecting seat 1, be convenient for install. Specifically, when first linking arm 201, second linking arm 202 and third linking arm 203 are extended along the default direction by the lateral wall of shaft hole connecting seat 1, at first confirm the quantity of installation department and the installation position of each installation department on this linking arm, and then according to the atress route of each installation department, synthesize and confirm linking arm extension route and cross sectional shape for the entity volume of linking arm after confirming is minimum, and then is favorable to alleviateing the weight of whole 3D printing back knuckle.

It should be noted that, the extension in the preset direction only limits the orientation of the connecting arm in a wide range, and according to the position relationship between the mounting portion and the shaft hole connecting seat 1 and the stress path after the stress analysis of the mounting portion, the connecting arm extends in the preset direction and has a certain displacement in the direction perpendicular to the axial direction, which also belongs to the protection scope of the present invention.

Referring to fig. 1 to 7, preferably, as the 3D post-printing knuckle described above, the plurality of reinforcing ribs include:

a first rib 301, the first rib 301 connecting the toe-in rod mounting portion 2021 and the connecting structure 103 corresponding to the third mounting hole 1023;

the second reinforcing rib 302 is connected with the toe-in pull rod mounting part 2021, and the outer side wall of the shaft hole connecting seat 1 corresponding to the position between the second mounting hole 1022 and the third mounting hole 1023;

the third reinforcing rib 303, the third reinforcing rib 303 connects the H-arm mounting part 2031, and the outer side wall of the shaft hole connecting base 1 corresponding to the third mounting hole 1023;

and a fourth reinforcing rib 304, wherein the fourth reinforcing rib 304 connects the first connecting arm 201 and the connecting structure 103 corresponding to the fourth mounting hole 1024.

In an embodiment of the present invention, the first stiffener 301 of the plurality of stiffeners connects the toe-in pull rod mounting portion 2021 and the connecting structure 103 corresponding to the third mounting hole 1023, specifically, the first stiffener 301 and the connecting structure 103 corresponding to the third mounting hole 1023 are connected at an end away from the shaft hole connecting seat 1, the force received by the toe-in pull rod mounting portion 2021 can be transmitted to the shaft hole connecting seat 1 through the connecting structure 103 corresponding to the third mounting hole 1023, the second stiffener 302 connects the toe-in pull rod mounting portion 2021 and the outer side wall of the shaft hole connecting seat 1, the force received by the toe-in pull rod mounting portion 2021 can be directly transmitted to the shaft hole connecting seat 1, so that the second connecting arm 202 can satisfy the requirement for bearing capacity through a smaller structure, thereby facilitating the stable mounting of the toe-in pull rod, and simultaneously facilitating the reduction of the solid volume of the second connecting arm 202;

the lateral wall of the shaft hole connecting seat 1 that the H arm installation portion 2031 and the third mounting hole 1023 correspond is connected to the third strengthening rib 303 in a plurality of strengthening ribs, can directly transmit the power that the H arm installation portion 2031 received to the shaft hole connecting seat 1, is favorable to guaranteeing the firm installation to the H arm, makes the third connecting arm 203 can satisfy the demand to the bearing capacity through less structure, is favorable to reducing the entity volume of third connecting arm 203.

The fourth strengthening rib 304 in a plurality of strengthening ribs connects the connection structure 103 that first connecting arm 201 and fourth mounting hole 1024 correspond, can transmit the power that first connecting arm 201 received to the connection structure 103 that fourth mounting hole 1024 corresponds, and then pass to shaft hole connecting seat 1 for first connecting arm 201 can satisfy the demand to the bearing capacity through less structure, is favorable to reducing the entity volume of first connecting arm 201.

Referring to fig. 7, in particular, as described above for the 3D post-printing knuckle, the first reinforcing rib 301, the second reinforcing rib 302, and the third reinforcing rib 303 are each provided with a hollow structure 5.

In a preferred embodiment of the present invention, the first reinforcing rib 301, the second reinforcing rib 302 and the third reinforcing rib 303 are all provided with the hollow structure 5, so that the solid volume on the non-stressed path is reduced on the premise of ensuring the transmission of force, which is beneficial to reducing the weight of the knuckle after 3D printing.

Referring to fig. 1 to 6, preferably, as above-mentioned 3D post-printing knuckle, the hollowed-out weight-reducing structure further includes: and the third hollow structures 205 are disposed on the non-stressed paths of the first connecting arm 201 and the second connecting arm 202.

In the utility model discloses a preferred embodiment, still be provided with third hollow out construction 205 on first connecting arm 201 and the second linking arm 202, wherein third hollow out construction is located first connecting arm 201 and the second linking arm 202 non-atress route after carrying out the atress analysis, further reduces the weight of first connecting arm 201 and second linking arm 202 through third hollow out construction 205, and then is favorable to alleviateing the weight of whole 3D post-printing knuckle. Specifically, the third hollow structure 205 includes, but is not limited to, a fabrication hole, a bracket, and the like, for example, a fabrication hole on the upper arm mounting portion 2012, and a connection portion of the first connecting arm 201 and the upper arm mounting portion 2012 is formed as a V-shaped bracket.

Referring to fig. 1 to 6, in particular, as the 3D post-printing knuckle described above, the plurality of connecting arms further include:

two caliper connecting arms 204 extending outwards and perpendicular to the side wall of the shaft hole connecting seat 1, and a caliper mounting part is arranged at one end of each caliper connecting arm 204 far away from the shaft hole connecting seat 1;

wherein, the first caliper connecting arm 2041 of the two caliper connecting arms 204 is arranged corresponding to the third mounting hole 1023, and the second caliper connecting arm 2042 is arranged corresponding to the fourth mounting hole 1024.

In a specific embodiment of the utility model, a plurality of linking arms are still including the calliper linking arm 204 that is used for fixed calliper, realize the firm installation to calliper through the calliper installation department on the calliper linking arm 204.

Referring to fig. 1 to 6, preferably, the 3D post-printing knuckle as described above, the plurality of reinforcing ribs includes:

the fifth reinforcing rib 305 is connected to the caliper mounting portion of the second caliper connecting arm 2042 and the connecting structure 103 corresponding to the first mounting hole 1021.

The utility model discloses an in a specific embodiment, the calliper connecting portion on the second calliper linking arm 2042 and the connection structure 103 that first mounting hole 1021 corresponds are connected to fifth strengthening rib 305 among a plurality of strengthening ribs, make fifth strengthening rib 305, constitute a triangle-shaped structure between shaft hole connecting seat 1 and the second calliper linking arm 2042, guarantee the installation stability of this calliper installation department, simultaneously can transmit the power that the calliper installation department received to shaft hole connecting seat 1 through second calliper linking arm 2042 and fifth strengthening rib 305, make second calliper linking arm 2042 can satisfy the demand to the bearing capacity through less structure, be favorable to reducing the entity volume of second calliper linking arm 2042.

Referring to fig. 5, further, as described above for the 3D printed rear knuckle, the third stiffener 303 is provided with a branch structure extending to the first caliper connecting arm 2041.

Connect third strengthening rib 303 and first calliper connecting arm 2041 through branch structure, can further divide the three-dimensional triangle-shaped structure that third strengthening rib 303, third connecting arm 203 and shaft hole connecting seat 1 are constituteed, increased the way of third connecting arm 203 and first calliper connecting arm 2041 dispersed power, be favorable to guaranteeing the structural strength of whole 3D printing back knuckle.

Referring to fig. 3, in particular, as for the 3D post-printing knuckle as described above, the brake disc mounting structures 4 protruding away from the preset direction are provided on the first connecting arm 201, the second connecting arm 202, and the third connecting arm 203.

In a specific embodiment of the utility model, the 3D printed knuckle is further provided with a brake disc mounting structure 4 for connecting with a brake disc, so as to facilitate connection with the brake disc, wherein the brake disc mounting structure 4 protrudes away from the preset direction, which is beneficial to avoiding interference between the brake disc and the axle hole connecting seat 1; specifically, the brake disk mounting structure 4 is respectively disposed on the first connecting arm 201, the second connecting arm 202 and the third connecting arm 203, and is formed into a triangular structure, which is beneficial to improving the connection stability of the brake disk. Furthermore, be provided with the screw hole on the brake disc mounting structure 4, be connected with the brake disc through convenient realization of screw hole.

Referring to fig. 1, 3, 8 to 15, still another preferred embodiment of the present invention also provides a suspension system including: the 3D printing rear knuckle 100 comprises an upper swing arm 200, an H arm 300, an H arm link 400, a toe link 500, a hub bearing 600, a caliper 700, a brake disc 800 and the 3D printing rear knuckle 100 as described above, wherein the 3D printing rear knuckle 100 is connected with the upper swing arm 200, the H arm 300, the H arm link 400, the toe link 500, the hub bearing 600, the caliper 700 and the brake disc 800 respectively.

In a specific embodiment of the utility model, 3D prints back knuckle 100 and is connected with upper swing arm 200, H arm 300, H arm connecting rod 400, toe-in pull rod 500, wheel hub bearing 600, calliper 700 and brake disc 800 respectively as intermediate junction spare, constitutes this suspension system. Through adopting 3D after losing weight and structure enhancement to print back knuckle 100, be favorable to realizing the lightweight of whole suspension system to ensure the ride comfort and the economic nature of passing through of car.

Referring to fig. 11, specifically, the upper swing arm 200 is a curved rod-shaped structure, so as to ensure a reasonable gap between the suspension system and a vehicle body when the suspension system jumps, and both ends of the upper swing arm 200 are respectively provided with an upper swing arm fixing part 2001 and a second fixing part 4001, the upper swing arm fixing part 2001 is configured to be an annular structure, a rubber bushing is installed in the upper swing arm fixing part 2001, a large hexagonal flange bolt passes through the rubber bushing to be fixedly connected with an upper end arm mounting part 2012 of the 3D printed rear knuckle 100, and the rubber bushing plays a role in buffering; an automobile bulb is arranged in the second fixing part 4001, and is fixedly connected with a rear auxiliary frame of an automobile through the automobile bulb, and multi-angle rotation is realized through spherical connection, so that a steering mechanism can smoothly steer, vibration is reduced, and smooth steering is realized; the utility model discloses an go up swing arm 200 can adopt integrative forging and pressing to make for the forming process of going up swing arm 200 is simple, can simplify the assembling procedure, reduction in production cost.

Referring to fig. 12, the H-arm 300 includes a first body part 3001 and a second body part 3002. First body part 3001 includes the H arm connecting rod fixed part 30011 of being connected with H arm connecting rod 400, and the first auxiliary frame fixed part 30012 of being connected with the car sub vehicle frame, H arm connecting rod fixed part 30011 and first auxiliary frame fixed part 30012 set up relative both sides, first auxiliary frame fixed part 30012 stretches out to the direction of keeping away from first body part 3001 from the inboard edge of first body part 3001, the installation sleeve has on the first auxiliary frame fixed part 30012, can be provided with the car bulb in the installation sleeve, through car bulb and back auxiliary frame fixed connection, utilize the ball-type to connect the rotation that realizes the multi-angle, make steering mechanism can smooth-going turn to, reduce vibrations and realize smooth-going to turn to. The second body portion 3002 includes an H arm fixing portion 30021 connected to the H arm attachment portion 2031 of the third connecting arm 203, and a second subframe fixing portion 30022 connected to the subframe of the vehicle, the H arm fixing portion 30021 and the second subframe fixing portion 30022 being disposed opposite to each other. Further, the H-arm link fixing portion 30011 and the H-arm fixing portion 30021 are disposed on the same side and have a U-shaped groove shape.

It should be noted that the H-arm 300 is further provided with a recessed structure 30023, which is connected with a shock absorber and a shock absorbing spring of an automobile; the H-arm 300 has a multi-recess reinforcing structure, which is optimally designed into various recess patterns by fully considering the stress condition of each part, so as to achieve the best effect of increasing the overall strength.

Referring to fig. 13, the H-arm link 400 is a straight rod-shaped link rod, a second fixing portion 4001 and a third fixing portion 4002 are respectively disposed at two ends of the straight rod-shaped link rod, a rubber bushing is installed in the second fixing portion 4001 of the H-arm link 400, a large hexagon flange bolt penetrates through the rubber bushing to be fixedly connected with an H-arm link installation portion 2011 of the first link arm 201 of the 3D printed rear knuckle 100, and the rubber bushing plays a role in buffering. The third fixing part 4002 of the H-arm link 400 is provided with an automobile ball head, and is fixedly connected with the H-arm link fixing part 30011 of the H-arm 300 through the automobile ball head, and multi-angle rotation is realized by means of ball-type connection, so that the steering mechanism can smoothly steer, vibration is reduced, and smooth steering is realized.

Referring to fig. 14, the toe-in pull rod 500 is a straight rod-shaped connecting rod, two ends of the straight rod-shaped connecting rod are respectively provided with a toe-in pull rod fixing portion 5001 and a fourth fixing portion 5002, a rubber bushing is installed in the toe-in pull rod fixing portion 5001 of the toe-in pull rod 500, a large hexagonal flange bolt penetrates through the rubber bushing to be fixedly connected with the toe-in pull rod mounting portion 2021 of the second connecting arm 202 of the 3D printed rear knuckle 100, and the rubber bushing plays a role of buffering. The automobile bulb is arranged in the fourth fixing portion 5002 of the toe-in pull rod 500, and is fixedly connected with a rear auxiliary frame of an automobile through the automobile bulb, multi-angle rotation is achieved through spherical connection, so that the steering mechanism can steer smoothly, vibration is reduced, and smooth steering is achieved.

Referring to fig. 15, the hub bearing 600 includes a first flange 6001 and a second flange 6002 at two ends, respectively, wherein the hub bearing 600 is fixedly connected to the axle hole connecting seat 1 by passing the first flange 6001 and the mounting hole 102 on the axle hole connecting seat 1 through bolts; the hub bearing 600 is fixedly connected to the hub of the vehicle via a second flange 6002.

Referring to fig. 10, three brake disc fixing portions are disposed on a brake disc 800, and are respectively connected with the brake disc mounting structure 4 of the 3D printed knuckle 100 in a matching manner; specifically, the three brake disc fixing portions on the brake disc 800 may be three stud bolts.

Referring to fig. 10, optionally, a fender may be further disposed between the 3D printed rear knuckle 100 and the brake disc 800, wherein the fender is provided with a through hole corresponding to the brake disc mounting structure 4, so that the fender is fixed with the brake disc 800 when the 3D printed rear knuckle 100 is connected with the brake disc 800.

Referring to fig. 8 to 10, the calipers 700 are fixedly connected to the caliper mounting portions on the two caliper connecting arms 204 of the 3D printed knuckle, respectively.

Yet another preferred embodiment of the present invention provides a vehicle, including: a suspension system as described above.

In a preferred embodiment of the present invention, there is further provided a vehicle, wherein the suspension system as described above is included, and the ride comfort and the economy of the vehicle can be advantageously ensured by reducing the weight of the suspension system. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (13)

1. A 3D post-printing knuckle comprising: the middle part is provided with shaft hole connecting seat (1) and a plurality of by shaft hole connecting seat (1) outside extended linking arm, surround on shaft hole connecting seat (1) shaft hole (101) are provided with a plurality of mounting holes (102), be provided with the installation department that is used for connecting corresponding vehicle part on the linking arm, its characterized in that, integrated into one piece the 3D prints the back knuckle, still includes:

the hollow weight reduction structure is arranged on the 3D printed steering knuckle;

the hole wall of the mounting hole (102) extends along a preset direction, and the preset direction is parallel to the axial direction of the shaft hole (101);

the reinforcing ribs are arranged on the connecting arms, the reinforcing ribs are formed into three-dimensional structures with different thicknesses and irregular shapes along stress paths, at least part of the connecting arms are connected with the connecting structures (103) through the reinforcing ribs, and at least part of the connecting arms are connected with the other connecting arms and/or the shaft hole connecting seats (1) through the other reinforcing ribs;

at least one connecting arm and/or the reinforcing rib is provided with a hollow structure (5).

2. The 3D post-printing steering knuckle according to claim 1, wherein the connecting structure (103) is formed as a cylindrical or semi-cylindrical structure, the hollowed-out weight-reducing structure comprising: and the first hollow structure (1031) is arranged on the side wall of the cylindrical or semi-cylindrical structure.

3. The 3D post-printing steering knuckle according to claim 1, wherein the mounting hole (102) is formed as a stepped hole, and the hollowed-out weight-reducing structure comprises: and the second hollow structure (1025) is arranged on the hole wall and/or the step surface of the stepped hole.

4. The 3D post-printing knuckle according to claim 1, wherein the number of mounting holes (102) is four, comprising: the shaft hole (101) is provided with a first mounting hole (1021), a second mounting hole (1022), a third mounting hole (1023) and a fourth mounting hole (1024) which are sequentially arranged corresponding to four corners of a preset square, wherein the middle point of the preset square is positioned on the axis of the shaft hole (101);

the plurality of connecting arms includes:

the first connecting arm (201) corresponds to the first mounting hole (1021) and extends along the preset direction, an H-arm connecting rod mounting part (2011) is arranged at one end, close to the shaft hole connecting seat (1), of the first connecting arm (201), and an upper end arm mounting part (2012) is arranged at one end, far away from the shaft hole connecting seat (1), of the first connecting arm (201);

a second connecting arm (202) which corresponds to the second mounting hole (1022) and extends along the preset direction, wherein a toe-in pull rod mounting part (2021) is arranged at one end, far away from the shaft hole connecting seat (1), of the second connecting arm (202); and the number of the first and second groups,

correspond third mounting hole (1023) and follow third linking arm (203) that the predetermined direction extends, third linking arm (203) are kept away from the one end of shaft hole connecting seat (1) is provided with H arm installation department (2031).

5. The 3D post-printing knuckle of claim 4, wherein the plurality of reinforcing ribs comprises:

a first rib (301) connecting the toe-link attachment section (2021) and a connection structure (103) corresponding to the third attachment hole (1023);

the second reinforcing rib (302) is connected with the toe-in pull rod mounting part (2021), and the outer side wall of the shaft hole connecting seat (1) corresponding to the position between the second mounting hole (1022) and the third mounting hole (1023);

the third reinforcing rib (303), the said H arm mounting part (2031) of said third reinforcing rib (303) connection, and said axle hole connecting seat (1) correspond to said third mounting hole (1023) the outer sidewall;

a fourth stiffener (304), the fourth stiffener (304) connecting the first connecting arm (201) and a connecting structure (103) corresponding to the fourth mounting hole (1024).

6. The 3D post-printing knuckle according to claim 5, characterized in that the first stiffener (301), the second stiffener (302) and the third stiffener (303) are each provided with the hollow structure (5).

7. The 3D post-printing knuckle according to claim 5, wherein the hollowed-out weight-reducing structure further comprises: and the third hollow structure (205) is arranged on a non-stress path of the first connecting arm (201) and the second connecting arm (202).

8. The 3D post-printing knuckle of claim 5, wherein the plurality of connecting arms further comprises:

the caliper connecting arms (204) extend outwards and are perpendicular to the side walls of the shaft hole connecting seat (1), and a caliper mounting part is arranged at one end, away from the shaft hole connecting seat (1), of each caliper connecting arm (204);

wherein, two first calliper connecting arm (2041) in calliper connecting arm (204) correspond third mounting hole (1023) set up, second calliper connecting arm (2042) correspond fourth mounting hole (1024) set up.

9. The 3D post-printing knuckle of claim 8, wherein the plurality of reinforcing ribs comprises:

a fifth reinforcing rib (305), wherein the fifth reinforcing rib (305) connects the caliper mounting part on the second caliper connecting arm (2042) and a connecting structure (103) corresponding to the first mounting hole (1021).

10. The 3D post-printing knuckle according to claim 8, characterized in that a branching structure extending to the first caliper connecting arm (2041) is provided on the third stiffener (303).

11. The 3D post-printing knuckle according to claim 4, characterized in that the first connecting arm (201), the second connecting arm (202) and the third connecting arm (203) are each provided with a brake disc mounting structure (4) protruding away from the preset direction.

12. A suspension system, comprising: the 3D printed rear knuckle (100) of any one of claims 1 to 11, comprising an upper swing arm (200), an H-arm (300), an H-arm link (400), a toe-link (500), a hub bearing (600), a caliper (700), a brake disc (800), and the 3D printed rear knuckle (100) as claimed in any one of claims 1 to 11, wherein the 3D printed rear knuckle (100) is connected with the upper swing arm (200), the H-arm (300), the H-arm link (400), the toe-link (500), the hub bearing (600), the caliper (700), and the brake disc (800), respectively.

13. An automobile, comprising: the suspension system of claim 12.

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