Rigid suspension device and range extender assembly

Abstract

The utility model discloses a kind of rigid suspension device and range-extender assembly, suspension device includes first suspension support, second suspension support and rigid intermediate support, first suspension support and second suspension support are arranged left and right respectively fixed in the set position of vehicle frame, rigid intermediate support is fixedly connected between the first suspension support and second suspension support;The utility model preferably enhances suspension mounting point dynamic stiffness, improve the ability of resisting overturning torque, and not too much increase occupied space and weight, improve suspension vibration isolation performance and anti-vibration capacity, combined with the mounting point on suspension support, can effectively reduce the vibration, noise of whole vehicle, improve the NVH quality of whole vehicle;At the same time, due to the suspension support of two sides forms integrated structure, forms frame type reinforcing structure between vehicle frame, to improve the overall strength of vehicle frame, further guarantee the NVH quality of whole vehicle.

Description

Technical Field

[0001] This utility model relates to an automotive accessory and component, and particularly to a rigid suspension device and a range extender component. Background Technology

[0002] Vehicle mounts are indispensable components in automobiles, used to mount weighted equipment (other than the chassis) to the frame, such as engines, electric motors in new energy vehicles, and range extenders. These devices or systems are mounted to the frame via mounts, and the strength of the mounting is a crucial consideration. Furthermore, they must provide vibration damping and isolation to meet the vehicle's NVH (noise, vibration, and harshness) requirements. For example, the range extender is a key component in commercial range-extended vehicles, mounted to the frame via a mount. Therefore, the primary sources of vibration and noise in the vehicle originate from the mounting between the range extender and the mount. Consequently, a key technical challenge is improving the vibration isolation or anti-vibration performance of the range extender mount to effectively reduce the vibration and noise transmitted from the range extender to the cab and the external environment.

[0003] In conventional automotive design, range extenders are typically mounted on two brackets directly to the chassis. Improving vibration isolation and resistance primarily involves increasing the dynamic stiffness (resistance to elastic deformation under dynamic loads) of the range extender mounting points. However, in this mounting structure, the flanges that provide mounting stiffness for the range extender have dynamic stiffness that is insufficient or even low due to the mounting structure itself. This results in poor vibration isolation and resistance performance of the mounting structure, causing vibration and noise in the range extender components. This can lead to serious vibration and noise problems such as steering wheel vibration, seat vibration, and pressure on the ears under specific in-vehicle conditions, ultimately causing discomfort for passengers and affecting the overall NVH quality of the vehicle.

[0004] Therefore, it is necessary to improve the existing suspension system, enhance the dynamic stiffness of the suspension mounting, without excessively increasing the space and weight occupied, improve the vibration isolation performance and vibration resistance of the suspension, thereby reducing vehicle vibration and noise, and improving the overall NVH quality of the vehicle. Utility Model Content

[0005] In view of this, the present invention provides a rigid suspension device and range extender assembly, which enhances the dynamic stiffness of the suspension mounting without excessively increasing the space and weight occupied, improves the vibration isolation performance and vibration resistance of the suspension, thereby reducing vehicle vibration and noise and improving the NVH quality of the whole vehicle.

[0006] The rigid suspension device of this utility model includes a first suspension bracket, a second suspension bracket, and a rigid intermediate support. The first suspension bracket and the second suspension bracket are respectively fixed to a set position on the vehicle frame on the left and right sides. The rigid intermediate support is fixedly connected between the first suspension bracket and the second suspension bracket.

[0007] Furthermore, the rigid intermediate support is detachably and fixedly connected between the first suspension bracket and the second suspension bracket.

[0008] Furthermore, the first suspension bracket extends inward and the extended end forms a first connecting part, the second suspension bracket extends inward and the extended end forms a second connecting part, and the two ends of the rigid intermediate support respectively form a fitting with the first connecting part and the second connecting part and then a detachable fixed connection.

[0009] Furthermore, the rigid intermediate support is at least near both ends in a square tube shape to form a first embedded part and a second embedded part. The first connecting part and the second connecting part are both square groove structures. The first embedded part and the second embedded part are respectively embedded into the first connecting part and the second connecting part with small gaps to form a detachable fixed connection.

[0010] Furthermore, the slot openings of the first connecting part and the second connecting part face downwards, and the first embedding part and the second embedding part are respectively embedded into the first connecting part and the second connecting part from bottom to top to form a detachable connection. In addition, the upper side surfaces of the first embedding part and the second embedding part abut against the bottom of the slots of the first connecting part and the second connecting part.

[0011] Furthermore, the cross-section of the first suspension bracket gradually decreases towards the first connecting portion, and the cross-section of the second suspension bracket gradually decreases towards the second connecting portion.

[0012] Furthermore, a first mounting position for mounting the suspended device is provided on the upper surface of the first suspension bracket, and a second mounting position for mounting the suspended device is provided on the upper surface of the second suspension bracket; the first connecting part has a smooth downward structure relative to the first mounting position, and the second connecting part has a smooth downward structure relative to the second mounting position.

[0013] Furthermore, the rigid intermediate support is a square tube, and the first and second embedded parts are formed by extending directly from the rigid intermediate support to both ends.

[0014] Furthermore, the first and second embedded parts are respectively detachably fixedly connected to the first and second connecting parts by their respective bolt pairs, and each bolt pair consists of at least two bolt pairs arranged side by side along the length direction of the rigid intermediate support.

[0015] This utility model also discloses a range extender assembly, including the aforementioned rigid suspension device and a range extender, wherein the range extender is mounted on the first suspension bracket and the second suspension bracket.

[0016] The beneficial effects of this utility model are as follows: The rigid suspension device and range extender assembly of this utility model have a rigid intermediate support fixedly connected between the left and right suspension brackets, forming an integrated structure between the two suspension brackets. This significantly increases the overall strength of the suspension brackets, improves their resistance to rollover torque, and enhances the dynamic stiffness of the suspension mounting points without excessively increasing space and weight, thus improving the suspension's vibration isolation performance and vibration resistance. After installing the corresponding equipment (such as the range extender of this utility model), the rigid intermediate support can also provide support for the equipment. Combined with the mounting points on the suspension brackets, it can effectively reduce vehicle vibration and noise, improving the overall NVH quality of the vehicle. At the same time, since the suspension brackets on both sides form an integrated structure and are installed in the designated positions on the vehicle frame, they form a frame-like reinforcement structure with the vehicle frame, thereby improving the overall strength of the vehicle frame and further ensuring the overall NVH quality of the vehicle. Of course, the structure of the rigid suspension bracket of this utility model is not only suitable for the installation of range extenders, but can also be used for other equipment on the vehicle. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model installed on the vehicle frame;

[0019] Figure 2 This is an exploded view of the present invention;

[0020] Figure 3 This is a partial schematic diagram of the first suspension bracket;

[0021] Figure 4 This is a partial schematic diagram of the first suspension bracket. Detailed Implementation

[0022] like Figures 1 to 4 As shown: The rigid suspension device in this embodiment includes a first suspension bracket 1, a second suspension bracket 2, and a rigid intermediate support 3. The first suspension bracket 1 and the second suspension bracket 2 are respectively fixed to predetermined positions on the vehicle frame, located on the left and right sides. These predetermined positions refer to the respective designated positions of the first suspension bracket 1 and the second suspension bracket 2. Figure 1 , Figure 3 and Figure 4As shown, the first suspension bracket 1 is installed at a predetermined position a on the vehicle frame, and the second suspension bracket 2 is installed at a predetermined position b on the vehicle frame. The positions vary depending on the device being suspended; in this embodiment, they are the left and right longitudinal beams of the vehicle frame, respectively, and will not be elaborated further. The rigid intermediate support 3 is fixedly connected between the first suspension bracket 1 and the second suspension bracket 2. The method of fixing is not limited here; it can be any existing mechanical connection method that can achieve a fixed connection, all achieving the integrated effect of the suspension device. The rigid intermediate support 3 can be a typical rigid structure in mechanical structures, such as a regular strip structure connected between the first suspension bracket 1 and the second suspension bracket 2, or it can be an irregular strip or even other irregular structures, as long as it forms a rigid support. Figure 1 As shown, this structure forms an integrated frame structure with the vehicle frame, which is beneficial for bearing loads in all directions and has a significant reinforcing effect on the vehicle frame. Of course, for the suspended equipment, not only are the sides installed, but the middle can also form a support, which greatly increases the installation strength in the vertical direction and improves the ability to resist reverse torque, effectively improving the dynamic stiffness of the mounting point. The way the first suspension bracket 1 and the second suspension bracket 2 are installed in the set position of the vehicle frame is not limited. It can be any fixed connection structure that exists in the prior art, including welding, bolt connection, etc., which will not be elaborated here.

[0023] In this embodiment, the rigid intermediate support 3 is detachably fixedly connected between the first suspension bracket 1 and the second suspension bracket 2. The detachable structure usually adopts a bolt connection pair, which will not be described in detail here. The detachable fixed connection allows the rigid intermediate support 3 to be replaced as needed and has the characteristics of flexible use, which will not be described in detail here.

[0024] In this embodiment, the first suspension bracket 1 extends inward and the extended end forms a first connecting part 101, the second suspension bracket 2 extends inward and the extended end forms a second connecting part 202, and the two ends of the rigid intermediate support 3 are respectively fitted with the first connecting part 101 and the second connecting part 102 and then detachably fixedly connected; the inner side here refers to the direction of the centerline of the frame, which will not be elaborated here; the fitting refers to the cooperation structure between the fitting body and the fitting groove. According to the definition of fitting, the structural characteristics of this structure can be easily known, which will not be elaborated here; for this utility model, the method of fitting (which can be that the two ends of the rigid intermediate support 3 are respectively fitted with the first connecting part 101 or / and the second connecting part 102, and vice versa) and then detachably connected can fully restrict the degrees of freedom of the rigid intermediate support 3 and the first connecting part 101 and the second connecting part 102 in various directions, thereby forming a better rigid resistance when vibration occurs, and having a better vibration isolation and vibration resistance effect.

[0025] In this embodiment, the rigid intermediate support 3 is at least near both ends in a square tube shape, forming a first embedding portion 301 and a second embedding portion 302. Both the first connecting portion 101 and the second connecting portion 102 are square groove structures. The first embedding portion 301 and the second embedding portion 302 are respectively embedded into the first connecting portion 101 and the second connecting portion 102 with small gaps, forming a detachable fixed connection. In this embodiment, the shape of the middle part of the rigid intermediate support 3 is not limited and does not affect the connection with the first suspension bracket 1 and the second suspension bracket 2. As shown in the figure, both the first embedding portion 301 and the second embedding portion 302 are square tubes with a certain length, capable of connecting with the first connecting portion 101 and the second connecting portion 102. 02. Sufficient fitting length is formed; small gap refers to the smallest possible gap, which can ensure smooth insertion and prevent large shaking; as shown in the figure, the cross-section of the first connecting part 101 and the second connecting part 102 is an open groove structure (similar to channel steel) and the ends (only the inner ends) are not sealed to facilitate the passage of the first embedding part 301 and the second embedding part 302; the use of square tube and square groove with small gap for the fitting makes the first connecting part 101 and the second connecting part 102 form a flip constraint on the first embedding part 301 and the second embedding part 302, which helps to increase the connection strength, and at the same time, ensures that there will be no flipping, improves the ability to resist the flipping torque, and further improves the dynamic stiffness of the installation position.

[0026] In this embodiment, the slot openings of the first connecting part 101 and the second connecting part 102 face downwards. The slot refers to the groove used for fitting, which will not be described in detail here. The first embedding part 301 and the second embedding part 302 are respectively embedded into the first connecting part 101 and the second connecting part 102 from bottom to top to form a detachable connection. Furthermore, the upper side surfaces of the first embedding part 301 and the second embedding part 302 abut against the bottom of the groove of the first connecting part 101 and the second connecting part 102. As shown in the figure, in this structure, the suspended device is generally installed and supported on the first suspension bracket 1 and the second suspension bracket 2. As a result, a downward overturning torque is generated on the first suspension bracket 1 and the second suspension bracket 2. By using the bottom-up embedding of this structure and fitting against the bottom of the groove, the bottom of the groove and the rigid intermediate support 3 can be used to resist the overturning torque, thereby further improving the support rigidity and greatly improving the dynamic rigidity of the connection point.

[0027] In this embodiment, the cross-section of the first suspension bracket 1 gradually decreases towards the first connecting part 101, and the cross-section of the second suspension bracket 2 gradually decreases towards the second connecting part 201. As shown in the figure, the cross-sections of the two suspension brackets gradually decrease towards the connecting part. The gradual decrease in cross-section means that the area occupied by the cross-section gradually decreases, so that the root of the first suspension bracket 1 and the second suspension bracket 2 has a larger cross-section, which has a more stable installation and support effect, can better resist the overturning torque formed after the equipment is installed, improve vibration isolation, vibration resistance and shock absorption effect, and at the same time, the middle part occupies less space and does not interfere with the installation of other equipment.

[0028] In this embodiment, a first mounting position 102 for mounting the suspended device is provided on the upper surface of the first suspension bracket 1, and a second mounting position 202 for mounting the suspended device is provided on the upper surface of the second suspension bracket 2. As shown in the figure, two mounting holes are formed on the first mounting position 102 and the second mounting position for mounting the suspended device, which will not be described in detail here. The first connecting part 101 is smoothly lowered relative to the first mounting position 102, and the second connecting part 201 is smoothly lowered relative to the second mounting position 202. As shown in the figure, the lowering refers to the mounting part being lower than the mounting position and having a smooth transition. In this lowering structure, the first connecting part 101 and the second connecting part 202 are horizontally arranged, so that the cross-section of the two suspension brackets gradually decreases towards the connecting part. Most of this is completed by the lowering structure, so that the rigid intermediate support 3 is located at a lower position, which enhances the support capacity for the first suspension bracket and the second suspension bracket. When resisting the overturning moment, the rigid intermediate support 3 is subjected to positive bending moment tension, which conforms to the mechanical characteristics of steel structure and further improves the dynamic stiffness of the connection point.

[0029] In this embodiment, the rigid intermediate support 3 is a square tube, and the first embedded part 301 and the second embedded part 302 are formed by extending directly from the rigid intermediate support to both ends. It has good formability and standardization, reduces manufacturing costs, and the square tube structure has better resistance to bending moment.

[0030] In this embodiment, the first embedding part 301 and the second embedding part 302 are respectively detachably fixedly connected to the first connecting part 101 and the second connecting part 102 by their respective bolt pairs. Each bolt pair consists of at least two bolt pairs arranged side by side along the length direction of the rigid intermediate support. As shown in the figure, the first embedding part 301 and the first connecting part 101 are connected by two bolt pairs 4 arranged side by side along the length direction of the rigid intermediate support 3, and the second embedding part 302 and the first connecting part 201 are connected by two bolt pairs 5 arranged side by side along the length direction of the rigid intermediate support 3. The two parallel bolt pairs can further improve the ability to resist the overturning torque and have an anti-loosening effect.

[0031] In this embodiment, a range extender assembly is also disclosed, including the rigid suspension device and the range extender (not labeled in the figures, but this does not affect the understanding of the solution). The range extender is installed on the first suspension bracket 1 and the second suspension bracket 2, as shown in the figure. The first suspension bracket 1 and the second suspension bracket 2 are respectively provided with corresponding first mounting positions 101 and second mounting positions 201, and the range extender is installed through the first mounting positions 101 and the second mounting positions 201, which has strong vibration isolation and vibration resistance capabilities.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A rigid suspension device, characterized in that: It includes a first suspension bracket, a second suspension bracket, and a rigid intermediate support. The first and second suspension brackets are respectively fixed to a set position on the vehicle frame on the left and right sides. The rigid intermediate support is fixedly connected between the first and second suspension brackets.

2. The rigid suspension device according to claim 1, characterized in that: The rigid intermediate support is detachably and fixedly connected between the first suspension bracket and the second suspension bracket.

3. The rigid suspension device according to claim 1, characterized in that: The first suspension bracket extends inward and the extended end forms a first connecting part, the second suspension bracket extends inward and the extended end forms a second connecting part, and the two ends of the rigid intermediate support are respectively fitted with the first connecting part and the second connecting part and then detachably fixedly connected.

4. The rigid suspension device according to claim 3, characterized in that: The rigid intermediate support is at least near both ends in a square tube shape to form a first embedded part and a second embedded part. The first connecting part and the second connecting part are both square groove structures. The first embedded part and the second embedded part are respectively embedded into the first connecting part and the second connecting part with small gaps to form a detachable fixed connection.

5. The rigid suspension device according to claim 4, characterized in that: The slot openings of the first connecting part and the second connecting part face downwards, and the first embedding part and the second embedding part are respectively embedded into the first connecting part and the second connecting part from bottom to top to form a detachable connection. Furthermore, the upper side surfaces of the first embedding part and the second embedding part abut against the bottom of the slots of the first connecting part and the second connecting part.

6. The rigid suspension device according to claim 3, characterized in that: The cross-section of the first suspension bracket gradually decreases towards the first connecting part, and the cross-section of the second suspension bracket gradually decreases towards the second connecting part.

7. The rigid suspension device according to claim 6, characterized in that: The upper surface of the first suspension bracket is provided with a first mounting position for mounting the suspended device, and the upper surface of the second suspension bracket is provided with a second mounting position for mounting the suspended device; the first connecting part has a smooth downward structure relative to the first mounting position, and the second connecting part has a smooth downward structure relative to the second mounting position.

8. The rigid suspension device according to claim 5, characterized in that: The rigid intermediate support is a square tube, and the first and second embedded parts are formed by extending directly from the rigid intermediate support to both ends.

9. The rigid suspension device according to claim 4, characterized in that: The first and second embedded parts are respectively detachably fixed to the first and second connecting parts by their respective bolt pairs, and the respective bolt pairs are at least two arranged side by side in the length direction of the rigid intermediate support.

10. A range extender assembly, characterized in that: Includes the rigid suspension device and range extender as described in any one of claims 1 to 9, wherein the range extender is mounted on the first suspension bracket and the second suspension bracket.

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