Suspension assembly and powertrain system
By installing mating parts outside the stress zone of the mounting section, the stress concentration problem caused by the locating pin is solved, thereby improving the support stability and fatigue fracture resistance of the suspension assembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGFENG COMML VEHICLE CO LTD
- Filing Date
- 2025-06-25
- Publication Date
- 2026-07-14
AI Technical Summary
In the prior art, the locating pin is located on the side of the threaded hole of the upper frame near the engine end, which means that the pin hole on the bracket needs to be located in its stress area, resulting in stress concentration on the bracket, which can easily cause fatigue fracture of the bracket and reduce the support stability of the suspension assembly.
The mating parts are placed outside the stress zone of the mounting part and in a low stress zone. The positioning parts and connecting parts are arranged sequentially along the direction close to the connection end to avoid stress concentration in the mounting part and improve the fatigue fracture resistance.
It effectively avoids stress concentration in the mounting section, improves the support stability of the suspension assembly, and enhances the fatigue fracture resistance of the mounting section.
Smart Images
Figure CN224490664U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engine mount structure technology, specifically to a mount assembly and power system. Background Technology
[0002] The engine mounting system is a key connecting component between the vehicle's powertrain and the vehicle body, and it mainly undertakes three core functions: supporting the weight of the engine, isolating vibration transmission, and reducing noise.
[0003] CN222223891U discloses a tilting engine front mount with a limiting structure, which includes an upper frame and a lower frame, with a mounting rubber body supporting between the upper and lower frames. The lower frame is connected to the longitudinal beam of the vehicle frame, and the upper end face of the upper frame is provided with a positioning pin and a threaded hole. The positioning pin cooperates with the pin hole on the bracket for connecting the engine to position the bracket. Then, the bracket is fixed to the upper frame by bolts cooperating with the threaded hole of the upper frame, so that the engine is mounted on the longitudinal beam of the vehicle frame through the upper frame, the lower frame and the bracket.
[0004] Since the stress zone of the bracket is located between its engine end and the threaded hole of the upper frame, however, in this patent, the positioning pin is located on the side of the threaded hole of the upper frame closer to the engine end, which means that the pin hole on the bracket needs to be located in its stress zone, which will cause stress concentration in the bracket, making the bracket prone to fatigue fracture and reducing the support stability of the suspension assembly. Utility Model Content
[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a suspension assembly and power system to solve the technical problem that in the prior art, the positioning pin is located on the side of the threaded hole of the upper frame near the engine end, which requires the pin hole on the bracket to be located in its stress area, which will lead to stress concentration on the bracket, making the bracket prone to fatigue fracture and reducing the support stability of the suspension assembly.
[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:
[0007] In a first aspect, this utility model provides a suspension assembly, comprising:
[0008] The main body is used for mounting to the vehicle frame;
[0009] The mounting portion, partially abutting the main body portion, and having a connecting end for connecting to the engine; and
[0010] The connecting part includes a positioning member, a connecting member, and a mating member. The connecting member is located on the main body and connects to the mounting part, fixing the mounting part to the main body. The positioning member is located on the main body and on the side of the connecting member away from the connecting end. The mating member is located on the mounting part and can cooperate with the positioning member to position the mounting part.
[0011] In some embodiments, the positioning element includes a positioning pin, which is mounted on the main body portion;
[0012] The mating component is a positioning hole provided in the mounting part. The positioning hole is located at the end edge of the mounting part and opens on the side away from the connecting end, and is used for the insertion of the positioning pin.
[0013] In some embodiments, the outer diameter of the locating pin is gradually reduced in a direction away from the main body;
[0014] Correspondingly, the inner diameter of the positioning hole is gradually reduced in the direction away from the main body.
[0015] In some embodiments, the main body includes an outer frame and an inner frame. The outer frame is used to be mounted on the vehicle frame and has a mounting channel. The inner wall of the mounting channel is provided with a limiting protrusion. The inner frame includes an elastic segment and an assembly segment connected to each other. The elastic segment is inserted into the mounting channel and has a relief groove to avoid the limiting protrusion. The assembly segment is located outside the mounting channel and is connected to the outer frame.
[0016] The positioning component and the connecting component are located in the assembly section.
[0017] In some embodiments, the outer frame is provided with fixing holes, and the assembly section is provided with fixing screws facing the fixing holes, with the fixing screws passing through the fixing holes;
[0018] The main body also includes a fixing nut, which is screwed onto one end of the fixing screw that extends out of the fixing hole.
[0019] In some embodiments, the outer frame is provided with a guide groove on the side near the assembly section, the guide groove extending in a direction away from the connecting end, and the end of the guide groove away from the connecting end communicating with the fixing hole; and / or,
[0020] The outer frame has a surrounding plate on the side away from the assembly section. The surrounding plate surrounds the periphery of the fixing hole, and the fixing nut is located inside the surrounding plate.
[0021] In some embodiments, the outer frame is provided with a fastening screw hole on the side near the connecting end, and the assembly section is provided with an assembly hole corresponding to the fastening screw hole;
[0022] The main body also includes fastening bolts, which pass through the assembly hole and are threaded to the outer skeleton through the fastening screw hole.
[0023] In some embodiments, the assembly section is provided with a connecting screw hole, the connecting screw hole is located on the side of the positioning member near the connecting end, and the mounting part is provided with a mounting hole corresponding to the connecting screw hole;
[0024] The connector includes a connecting bolt, which passes through the mounting hole and is screwed into the connecting screw hole.
[0025] In some embodiments, the exoskeleton has a support plate extending from the side of the mounting channel near the connection end;
[0026] The assembly section is attached to the support plate.
[0027] In addition, this utility model also provides a power system, which includes the suspension assembly as described in any of the above claims.
[0028] Compared with the prior art, in the suspension assembly provided by this utility model, the main body is mounted on the vehicle frame, and the mounting part is fixed to the main body through a connector. The engine is then connected to the mounting part via its connecting end. In this case, the stress zone of the mounting part is located between the connector and its connecting end. Because the positioning members and connectors on the main body are arranged sequentially towards the connecting end, the mating member that cooperates with the positioning member is located at the far end of the mounting part, that is, the mating member is located on the side of the connector away from the connecting end. Thus, the mating member is located outside the stress zone of the mounting part, in a low-stress zone, effectively avoiding stress concentration in the mounting part, improving the fatigue fracture resistance of the mounting part, and thereby improving the support stability of the suspension assembly. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the suspension assembly provided in an embodiment of the present utility model;
[0030] Figure 2 yes Figure 1 Schematic diagram of the main body;
[0031] Figure 3 yes Figure 1 A partial schematic diagram of the mounting section;
[0032] Figure 4 yes Figure 2 A schematic diagram of the main body from another angle;
[0033] Figure 5 yes Figure 4 Explosion diagram of the main body;
[0034] Figure 6 yes Figure 5 A schematic diagram of the exoskeleton.
[0035] Explanation of reference numerals in the attached figures:
[0036] 1. Main body; 11. Outer frame; 1a. Mounting channel; 1b. Fixing hole; 1c. Guide groove; 1d. Fastening screw hole; 111. Limiting protrusion; 112. Enclosure plate; 113. Support plate; 114. Reinforcing rib; 12. Inner frame; 121. Elastic section; 121a. Clearance groove; 122. Assembly section; 122a. Connecting screw hole; 122b. Assembly hole; 123. Fixing screw; 13. Fixing nut; 14. Fastening bolt; 2. Mounting part; 2a. Mounting hole; 21. Connecting end; 3. Positioning component; 31. Positioning pin; 4. Connecting component; 41. Connecting bolt; 5. Mating component; 5a. Positioning hole. Detailed Implementation
[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0038] To address the technical problem in existing technologies where the locating pin is located on the side of the threaded hole of the upper frame near the engine end, requiring the pin hole on the bracket to be located in its stress zone, which leads to stress concentration in the bracket, easily causing fatigue fracture and reducing the support stability of the suspension assembly, this utility model provides a suspension assembly in which the mating parts are located outside the stress zone of the mounting part, in a low-stress zone, effectively avoiding stress concentration in the mounting part, improving the fatigue fracture resistance of the mounting part, and thus improving the support stability of the suspension assembly.
[0039] It should be noted that the suspension assembly described in this utility model is used in, but not limited to, power systems, etc. For ease of explanation, this utility model only uses the application of the suspension assembly in a power system as an example for explanation. The principle of the suspension assembly applied to other types of equipment is essentially the same as that applied to a power system, and will not be described in detail here.
[0040] Please see Figures 1 to 3 , Figures 1 to 3This is a schematic diagram of the suspension assembly in one embodiment of the present invention. The suspension assembly includes a main body 1, a mounting part 2, and a connecting part. The main body 1 is used to mount the vehicle frame. The mounting part 2 is partially abutted against the main body 1 and has a connecting end 21 for connecting to the engine. The connecting part includes a positioning member 3, a connecting member 4, and a mating member 5. The connecting member 4 is located on the main body 1 and connects to the mounting part 2, fixing the mounting part 2 to the main body 1. The positioning member 3 is located on the main body 1 and is situated on the side of the connecting member 4 away from the connecting end. The mating member 5 is located on the mounting part 2 and can cooperate with the positioning member 3 to position the mounting part 2. Specifically, the positioning member 3 and the connecting member 4 are located on the main body 1 and are arranged sequentially along the direction close to the connecting end 21, and the connecting end 21 is suspended outside the main body 1.
[0041] In the suspension assembly provided by this utility model, the main body 1 is mounted on the vehicle frame, and the mounting part 2 is fixed to the main body 1 by a connector 4, and then connected to the engine via the connecting end 21 of the mounting part 2. At this time, the stress zone of the mounting part 2 is located between the connector 4 and its connecting end 21. Since the positioning member 3 and the connector 4 on the main body 1 are arranged sequentially along the direction close to the connecting end 21, the mating member 5, which cooperates with the positioning member 3 for positioning, is located at the far end of the mounting part 2, that is, the mating member 5 is located on the side of the connector 4 away from the connecting end 21. In this way, the mating member 5 is located outside the stress zone of the mounting part 2, in a low-stress zone, effectively avoiding stress concentration in the mounting part 2, improving the fatigue fracture resistance of the mounting part 2, and thus improving the support stability of the suspension assembly.
[0042] It should be noted that the mounting base can be configured as a mounting arm, a mounting seat, or a mounting space. Furthermore, one of the positioning element 3 and the mating element 5 can be configured as a positioning pin 31, a positioning block, or a positioning key, while the other can be configured as a mating hole or a mating groove.
[0043] In one embodiment, the positioning member 3 includes a positioning pin 31, which is installed on the main body 1; the mating member 5 is a positioning hole 5a provided on the mounting part 2, which is located at the end edge of the mounting part 2 and opens on the side away from the connecting end 21, and is used for the positioning pin 31 to be inserted.
[0044] In this embodiment, the positioning hole 5a is set at the end edge of the mounting part 2, and its outer side is set as an opening. While realizing the positioning function and improving the engine mounting accuracy, it also ensures the integrity of the mounting part 2 as much as possible, improves the strength of the mounting part 2, and further improves the support stability of the suspension assembly.
[0045] In one embodiment, the outer diameter of the positioning pin 31 is gradually reduced in the direction away from the main body 1; correspondingly, the inner diameter of the positioning hole 5a is gradually reduced in the direction away from the main body 1.
[0046] In this embodiment, the positioning pin 31 and the positioning hole 5a are gradually reduced as described above, which further improves the positioning and guiding ability between the two, facilitates the cooperation between the positioning pin 31 and the positioning hole 5a, and improves the ease of assembly.
[0047] It should be noted that the main body 1 can be set as a main body seat, a main body beam or other forms.
[0048] In one embodiment, please refer to Figures 4 to 6 The main body 1 includes an outer frame 11 and an inner frame 12. The outer frame 11 is used to be mounted on the vehicle frame and has a mounting channel 1a. The inner wall of the mounting channel 1a is provided with a limiting protrusion 111. The inner frame 12 includes an elastic section 121 and an assembly section 122 connected to each other. The elastic section 121 is inserted into the mounting channel 1a and has a relief groove 121a to avoid the limiting protrusion 111. The assembly section 122 is located outside the mounting channel 1a and is connected to the outer frame 11. The positioning member 3 and the connecting member 4 are located in the assembly section 122.
[0049] In this embodiment, the elastic segment 121 of the inner skeleton 12 is inserted into the mounting channel 1a of the outer skeleton 11, and through the cooperation of the connector 4, the side wall of the mounting channel 1a, the limiting protrusion 111 and the clearance groove 121a, the inner skeleton 12 is limited in the up and down, left and right and front and back, thereby improving fatigue performance.
[0050] It should be noted that in this design, the assembly section 122 of the inner frame 12 is inclined, and the positioning component 3 and the connecting component 4 are located on the inclined surface of the assembly section 122. Therefore, when a suspension assembly is arranged on each side of the engine, the elastic axes of the two suspension assemblies intersect at the main inertial axis of the power system, thereby reducing the torsional mode of the power system and improving vibration isolation performance. During production, the inclination angle of the assembly section 122 can be adjusted according to requirements to change the intersection point of the elastic axes of the rubber bodies on both sides, adapting to the different heights of the main inertial axis of different engines.
[0051] In one embodiment, the outer frame 11 is provided with a fixing hole 1b, and the assembly section 122 is provided with a fixing screw 123 facing the fixing hole 1b, the fixing screw 123 passing through the fixing hole 1b; the main body 1 also includes a fixing nut 13, the fixing nut 13 being screwed onto the end of the fixing screw 123 that extends out of the fixing hole 1b.
[0052] In this embodiment, the outer frame 11 and the inner frame 12 are connected together by the cooperation of the fixing screw 123 and the fixing nut 13, resulting in a stable and reliable structure. It should be noted that, in one embodiment, the inner frame 12 includes a frame, a rubber body, and a metal plate welded with the fixing screw 123. The metal plate is welded to the fixing screw 123, and the rest is vulcanized together. That is, the assembly section 122 can also be covered with elastic rubber.
[0053] In addition, in this design, the outer wall of the mounting channel 1a is provided with multiple reinforcing ribs 114, which are spaced apart circumferentially along the mounting channel 1a to improve the strength of the outer frame 11. At the same time, the outer edge of the mounting channel 1a near the connecting end 21 is wider than the elastic section 121 to prevent the elastic section 121 from extending beyond the outer edge of the outer frame 11 after compression and deformation.
[0054] In one embodiment, the outer frame 11 is provided with a guide groove 1c on the side near the assembly section 122. The guide groove 1c extends in a direction away from the connecting end 21, and its end away from the connecting end 21 is connected to the fixing hole 1b.
[0055] In this embodiment, when assembling the inner frame 12 and the outer frame 11, the fixing screw 123 welded on the assembly section 122 is aligned with the guide groove 1c, and then the fixing screw 123 is slid along the extension direction of the guide groove 1c until the fixing screw 123 is inserted into the fixing hole 1b. At this time, the elastic section 121 is also inserted into the installation channel 1a, which improves the ease of assembly.
[0056] In one embodiment, the outer frame 11 is provided with a surrounding plate 112 on the side away from the assembly section 122. The surrounding plate 112 surrounds the periphery of the fixing hole 1b, and the fixing nut 13 is located inside the surrounding plate 112.
[0057] In this embodiment, the fixing nut 13 is enclosed by the enclosure plate 112 to prevent the fixing nut 13 from being interfered with by external foreign objects and to improve the connection stability between the fixing nut 13 and the fixing screw 123.
[0058] In one embodiment, the outer frame 11 is provided with a fastening screw hole 1d on the side near the connecting end 21, and the assembly section 122 is provided with an assembly hole 122b corresponding to the fastening screw hole 1d; the main body 1 also includes a fastening bolt 14, which passes through the assembly hole 122b and is threadedly connected to the outer frame 11 via the fastening screw hole 1d.
[0059] In this embodiment, the assembly section 122 is also fastened to the outer frame 11 by fastening bolts 14, which further improves the connection stability between the outer frame 11 and the inner frame 12.
[0060] It should be noted that connector 4 can be configured as a snap-fit, locking pin, or other form.
[0061] In one embodiment, the assembly section 122 is provided with a connecting screw hole 122a, which is located on the side of the positioning member 3 near the connecting end 21. The mounting part 2 is provided with a mounting hole 2a corresponding to the connecting screw hole 122a. The connecting member 4 includes a connecting bolt 41, which passes through the mounting hole 2a and is screwed into the connecting screw hole 122a.
[0062] In this embodiment, the mounting part 2 is fixed to the inner frame 12 by connecting bolts 41, resulting in a stable and reliable structure. It should be noted that in this design, there are two connecting screw holes 122a, and correspondingly, there are two mounting holes 2a and two connecting bolts 41.
[0063] In one embodiment, the outer frame 11 has a support plate 113 extending on the side of the mounting channel 1a near the connection end 21; the assembly section 122 is fitted to the support plate 113.
[0064] In this embodiment, the inner frame 12 is attached to the support plate 113, so that the force transmission between the inner frame 12 and the outer frame 11 is uniform, thereby improving the support stability.
[0065] Furthermore, this utility model also provides a power system, which includes the suspension assembly described in any of the above claims. It should be noted that the detailed structure of the suspension assembly of the power system can be referred to the embodiments of the suspension assembly described above, and will not be repeated here. Since the above suspension assembly is used in the power system of this utility model, the embodiments of the power system of this utility model include all the technical solutions of all the embodiments of the above suspension assembly, and the achieved technical effects are completely the same, and will not be repeated here.
[0066] To better understand this utility model, the following is combined with... Figures 1 to 6 The technical solution of this utility model is described in detail below:
[0067] In this design, the outer frame 11, with its U-shaped mounting channel 1a, provides vertical and horizontal positioning for the inner frame 12. Furthermore, the combination of the clearance groove 121a, the limiting protrusion 111, and the fixing screw 123 also provides front-to-back positioning for the inner frame 12, thereby improving fatigue performance. In addition, the outer frame 11 and the inner frame 12 are securely connected by the fixing screw 123 and the fixing nut 13 to prevent detachment and enhance reliability.
[0068] Meanwhile, the locating pin 31 of the inner frame 12 is located on the inner side, and the locating hole 5a of the matching mounting part 2 is located at the far end of the mounting part 2, i.e., in the low-stress area, to prevent stress concentration in the mounting part 2. Furthermore, the side of the inner frame 12 with the locating pin 31 and the connecting screw hole 122a can be arranged at an angle, so that when a suspension assembly is arranged on each side of the engine, the elastic axes of the two suspensions will intersect the main inertial axis of the power system; thereby reducing the torsional mode of the power system and improving vibration isolation performance.
[0069] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.
Claims
1. A suspension assembly, characterized in that, include: The main body is used for mounting to the vehicle frame; The mounting part is partially attached to the main body and has a connecting end for connecting to the engine; and The connecting part includes a positioning member, a connecting member, and a mating member. The connecting member is located on the main body and connects to the mounting part, fixing the mounting part to the main body. The positioning member is located on the main body and on the side of the connecting member away from the connecting end. The mating member is located on the mounting part and can cooperate with the positioning member to position the mounting part.
2. The suspension assembly according to claim 1, characterized in that, The positioning component includes a positioning pin, which is installed on the main body. The mating component is a positioning hole provided in the mounting part. The positioning hole is located at the end edge of the mounting part and opens on the side away from the connecting end, and is used for the insertion of the positioning pin.
3. The suspension assembly according to claim 2, characterized in that, The outer diameter of the positioning pin is gradually reduced in the direction away from the main body. Correspondingly, the inner diameter of the positioning hole is gradually reduced in the direction away from the main body.
4. The suspension assembly according to claim 1, characterized in that, The main body includes an outer frame and an inner frame. The outer frame is used to be mounted on the vehicle frame and has a mounting channel. The inner wall of the mounting channel is provided with a limiting protrusion. The inner frame includes an elastic section and an assembly section connected to each other. The elastic section is inserted into the mounting channel and has a relief groove to avoid the limiting protrusion. The assembly section is located outside the mounting channel and is connected to the outer frame. The positioning component and the connecting component are located in the assembly section.
5. The suspension assembly according to claim 4, characterized in that, The outer frame is provided with fixing holes, and the assembly section is provided with fixing screws facing the fixing holes, with the fixing screws passing through the fixing holes; The main body also includes a fixing nut, which is screwed onto one end of the fixing screw that extends out of the fixing hole.
6. The suspension assembly according to claim 5, characterized in that, The outer frame is provided with a guide groove on the side near the assembly section. The guide groove extends in a direction away from the connecting end, and its end away from the connecting end communicates with the fixing hole; and / or, The outer frame has a surrounding plate on the side away from the assembly section. The surrounding plate surrounds the periphery of the fixing hole, and the fixing nut is located inside the surrounding plate.
7. The suspension assembly according to claim 4, characterized in that, The outer frame is provided with a fastening screw hole on the side near the connecting end, and the assembly section is provided with an assembly hole corresponding to the fastening screw hole; The main body also includes fastening bolts, which pass through the assembly hole and are threaded to the outer skeleton through the fastening screw hole.
8. The suspension assembly according to claim 4, characterized in that, The assembly section is provided with connecting screw holes, which are located on the side of the positioning member near the connecting end. The mounting part is provided with mounting holes corresponding to the connecting screw holes. The connector includes a connecting bolt, which passes through the mounting hole and is screwed into the connecting screw hole.
9. The suspension assembly according to claim 8, characterized in that, The outer frame has a support plate extending from the side of the mounting channel near the connection end; The assembly section is attached to the support plate.
10. A power system, characterized in that, Includes the suspension assembly as described in any one of claims 1-9.