Frame connecting structure and bracket

Abstract

The utility model relates to the technical field of bracket structure, disclose a frame body connecting structure and bracket, including at least two left and right horizontal side -by -side arrangement and fixedly connected between two two frame body, fixedly connected with horizontal fixed part between the adjacent frame body body, and the side of the opposite of adjacent frame body body is equipped with the clamping portion cooperation with horizontal fixed part, the clamping portion on each frame body body all is equipped with the anti -backout portion for blocking horizontal fixed part to quit the clamping portion. The utility model patent solved the problem that the conventional aluminium alloy bracket structure of prior art cannot stably install and support battery pack.

Description

Technical Field

[0001] This utility model relates to the field of bracket structure technology, specifically to a frame connection structure and bracket. Background Technology

[0002] With technological advancements, new energy heavy-duty trucks have been developed and put into use. The battery pack structure of these trucks is mounted on a bracket, which is connected to the vehicle's main frame. This bracket structure serves to install, stabilize, and protect the battery pack. Conventional brackets are constructed by welding horizontally arranged steel frames. This process requires welding multiple frame bodies first, and then sequentially welding all the frame bodies to form the bracket. This not only increases material and welding costs but also results in a heavy overall weight. For example, the bracket of one heavy-duty truck model weighs 430 kg, undoubtedly increasing the truck's load, raising operating costs, and accelerating wear and tear on the vehicle's structure.

[0003] To address the problems existing in the brackets of new energy heavy-duty trucks, the inventors improved the bracket by using aluminum alloy instead of steel. The bracket is manufactured using friction stir welding, effectively reducing material and welding costs, while also reducing its weight and wear during use. Although using aluminum alloy effectively solves the problems of existing steel bracket structures, in actual use, due to the significant weight of the battery pack, the force exerted by the battery pack on the bracket during heavy-duty truck operation is both directional and substantial. If the aluminum alloy bracket structure were similar to the existing steel frame bracket structure, it would be unable to provide stable support for the battery pack. Therefore, it is necessary to improve the structure of the aluminum alloy bracket to ensure that it can provide stable support for the battery pack. Utility Model Content

[0004] The present invention aims to provide a frame connection structure and bracket to solve the problem that conventional aluminum alloy bracket structures in the prior art cannot stably install and support battery packs.

[0005] To solve the above problems, the present invention adopts the following technical solution: a frame connection structure, including at least two frame bodies arranged horizontally side by side and fixedly connected to each other, with a horizontal fixing part fixedly connected between adjacent frame bodies, and a snap-fit ​​part that cooperates with the horizontal fixing part is provided on the side facing the adjacent frame bodies, and each frame body has an anti-retraction part on the snap-fit ​​part for preventing the horizontal fixing part from exiting the snap-fit ​​part.

[0006] The principle of this application is as follows: In this application, the frame body is an aluminum alloy frame, which has the advantages of being lightweight and easy to weld. When the frames are connected, all the frame bodies inside the frame are arranged horizontally and adjacent frame bodies are fixedly connected. After all the frame bodies are fixedly connected, an installation platform is formed at the top. In the prior art, the battery pack is installed and fixed on the installation platform. In actual application, the arrangement direction of all the frame bodies can be arranged along the Y direction of the vehicle (i.e., perpendicular to the vehicle's driving direction) so as to install the battery pack, etc.

[0007] Meanwhile, in this application, a lateral fixing part is fixedly connected between adjacent frame bodies, and a snap-fit ​​part is provided on the side facing each other of the adjacent frame bodies. One side of the lateral fixing part snaps and fixes into the snap-fit ​​part of one of the frame bodies, and the other side of the lateral fixing part snaps and fixes into the snap-fit ​​part of the adjacent frame body. This allows the two adjacent frame bodies to not only be fixedly connected to each other, but also to be further fixedly connected through the lateral fixing part. Due to the fixed connection relationship after the lateral fixing part and the snap-fit ​​part snap together, the lateral fixing part can prevent the two adjacent frame bodies from moving in opposite directions, thereby improving the stability of the connection between the adjacent frame bodies and the overall strength of the connection of all frame bodies.

[0008] More importantly, each frame body in this application has an anti-retraction part on its snap-fit ​​portion to prevent the lateral fixing part from exiting the snap-fit ​​portion. Therefore, when two adjacent frame bodies are fixed to each other and connected by the lateral fixing part, the anti-retraction part on each frame body can prevent the lateral fixing part from exiting the corresponding snap-fit ​​portion. In other words, in addition to the lateral fixing part being able to help prevent the relative movement of two adjacent frame bodies, the anti-retraction part on the frame body can also prevent another adjacent frame body from detaching away from that frame body through the lateral fixing part, making the connection between the two adjacent frame bodies more stable.

[0009] In summary, the frame connection structure in this application forms a first layer of fixed connection between all frame bodies, a second layer of fixed connection between adjacent frame bodies due to the lateral fixing part, and a third layer of fixed connection between adjacent frame bodies due to the anti-retraction part on the snap-fit ​​part. Relying on these three layers of fixed connection, a stable frame structure can be formed in the lateral direction after all frame bodies are fixedly connected. This not only provides vertical support for the battery pack in the prior art in the vertical direction, but also ensures that all frame bodies are stably connected in the lateral direction. When heavy trucks turn, the frame can also withstand the lateral force of the battery pack, thus making the frame connection structure strong and stable, and able to stably support the installation of the battery pack.

[0010] Preferably, as an improvement, the snap-fit ​​part includes a snap-fit ​​groove provided on the side of the frame body, the anti-recoil part includes an anti-recoil plate fixedly connected to the frame body, the anti-recoil plate extends into the snap-fit ​​groove, and a protrusion that cooperates with the anti-recoil plate is fixedly connected to the transverse fixing part.

[0011] In this design, the anti-retraction plate extends into the snap-fit ​​groove and cooperates with the snap-fit ​​groove to form a protrusion-blocking structure. When one side of the lateral fixing part is snapped into the snap-fit ​​groove, the anti-retraction plate and the protrusion block each other. The anti-retraction plate can prevent the protrusion from laterally exiting the snap-fit ​​groove, so that after two adjacent frame bodies are connected, they cannot easily separate laterally (i.e., they are not easy to separate along the arrangement direction of all frame bodies) under the cooperation of the anti-retraction plate and the protrusion. This improves the stability of the connection between adjacent frame bodies, thereby enabling a more stable installation and fixing of the battery pack.

[0012] Preferably, as an improvement, the frame body is provided with a transverse through groove that runs through the left and right side walls along the arrangement direction of all frame bodies, and the front and rear sides of the frame body are provided with front and rear connecting grooves that communicate with the transverse through groove.

[0013] In this design, the transverse through-slot extends horizontally through the left and right walls of the frame body, creating a continuous installation space along the arrangement direction of all the frame bodies after connection. This allows for the installation and connection of components such as controllers and cooling systems that work with the battery pack in existing new energy heavy trucks within this continuous installation space, with the frame body providing protection for these components. Furthermore, this design includes front and rear connecting slots on both the front and rear sides of the frame body, saving materials and reducing its weight.

[0014] Preferably, as an improvement, the snap-fit ​​groove is arranged along the front-rear direction of the frame body, the length direction of the anti-recoil plate is parallel to the length direction of the snap-fit ​​groove, and the width direction of the anti-recoil plate is arranged vertically; the transverse fixing part includes a fixing seat along the length direction of the frame body, and the protrusion includes a vertical baffle fixedly connected to the top and / or bottom of the fixing seat.

[0015] In this design, the snap-fit ​​groove is set along the front-to-back direction of the frame body. After all the frame bodies are fixedly connected, they are arranged horizontally side by side. Therefore, the direction of the snap-fit ​​groove is perpendicular to the arrangement direction of the frame body. The length direction of the anti-recoil plate is parallel to the length direction of the snap-fit ​​groove, that is, the length direction of the anti-recoil plate is parallel to the length direction of the frame body. The width direction of the anti-recoil plate is set vertically. The vertical baffle is set at the top and / or bottom of the fixing base. The anti-recoil plate can block and fix the vertical baffle from the horizontal direction, preventing the adjacent frame bodies from separating from each other. The structure is simple and the connection is stable.

[0016] Preferably, as an improvement, the anti-recoil plate includes an upper anti-recoil plate and a lower anti-recoil plate arranged opposite each other, the upper anti-recoil plate being located on the top wall of the snap-fit ​​groove and the lower anti-recoil plate being located on the bottom wall of the snap-fit ​​groove; the protrusion includes vertical blocking protrusions fixedly connected to the top and bottom of the fixing seat, and the fixing seat and all the vertical blocking protrusions form an H-shaped connection blocking structure.

[0017] In this design, the fixing base and all vertical protrusions form an H-shaped connection and blocking structure. The vertical protrusions on the upper and lower sides of the fixing base are evenly arranged, making the auxiliary fixing force of the fixing base on the frame body on both sides more uniform, thereby making the connection between adjacent frame bodies more stable.

[0018] Preferably, as an improvement, a vertical support plate is fixedly connected in the front and rear connecting grooves, and the vertical support plate is provided with a vertical through groove that penetrates the vertical support plate; the fixed seat is provided with a weight reduction deformation groove.

[0019] In this design, vertical support plates are used to seal the front and rear connecting slots, enabling the vertical support plates to seal and block the front and rear sides of the through-installation space formed by all frame bodies, thus providing safety protection for the components installed within the through-installation space. In addition, vertical through-slots are set inside the vertical support plates, and weight-reducing deformation slots are set on the fixing bases. This not only effectively reduces the weight of the structure, but also provides the vertical support plates with a certain buffer deformation space in the lateral direction. When the vertical support plates are subjected to lateral impact forces, they are not easily damaged, thus providing better protection for the components within the through-installation space.

[0020] Preferably, as an improvement, a number of supporting ribs are fixedly connected inside the vertical through groove, and all the supporting ribs are arranged laterally along the left and right directions.

[0021] In this design, the vertical support plate has better structural strength after the support ribs are installed, and can withstand greater impact, thus providing better protection for components that penetrate the installation space.

[0022] Preferably, as an improvement, the snap-fit ​​part and the anti-retraction part are integrally formed with the frame body, and the protrusion part is integrally formed with the transverse fixing part.

[0023] In this design, the snap-fit ​​part and the anti-retraction part are integrally formed with the frame body, and the protrusion part and the horizontal fixing part are integrally formed, making processing and manufacturing more convenient and the structure stronger.

[0024] Preferably, as an improvement, there are multiple horizontal fixing parts connecting adjacent frame bodies, and these multiple horizontal fixing parts are arranged along the vertical direction.

[0025] In this solution, multiple horizontal fixing parts are set between adjacent frame bodies to further enhance the connection strength between frame bodies and improve the uniformity of force transmission between frames, making the connection between frame bodies more stable.

[0026] A bracket, comprising the aforementioned frame connection structure.

[0027] In this solution, a frame connection structure is set inside the bracket, forming a three-layer fixed connection between the frame bodies, making the connection between the frame bodies stable. Therefore, aluminum alloy can be used as the material of the frame body, effectively reducing the weight of the bracket, reducing material costs and welding and fixing costs. The bracket can not only provide stable support and fixation for the battery pack in the vertical direction, but also withstand lateral shear force, thereby achieving a better fixing effect for the battery pack. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of a frame connection structure in Embodiment 1 of this utility model (the second vertical support plate from the left front is hidden).

[0029] Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle.

[0030] Figure 3 This is a schematic diagram of the frame body in Embodiment 1 of this utility model.

[0031] Figure 4 for Figure 3 A magnified view of a section at point B in the middle.

[0032] Figure 5 This is a schematic diagram of the vertical support plate in Embodiment 1 of this utility model.

[0033] Figure 6 This is a schematic diagram of the fixing base in Embodiment 1 of this utility model.

[0034] Figure 7 This is a schematic diagram of the vertical support plate in Embodiment 2 of this utility model.

[0035] Figure 8 This is a schematic diagram of the fixing seat in Embodiment 2 of this utility model. Detailed Implementation

[0036] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: frame body 1, snap-fit ​​groove 101, transverse through groove 102, front and rear connecting groove 103, upper anti-recoil plate 2, lower anti-recoil plate 3, fixing seat 4, weight reduction deformation groove 401, vertical protrusion 5, vertical support plate 6, vertical through groove 601, support rib plate 7, through installation space 1000.

[0037] Example 1 This embodiment is as shown in the attached figure. Figure 1 and Figure 3 As shown: A frame connection structure includes at least two frame bodies 1 arranged horizontally side by side and fixedly connected to each other. The frame bodies 1 are made of aluminum alloy and are integrally formed by extrusion. The adjacent frame bodies 1 are fixed to each other by friction stir welding. Figure 1 The diagram shows ten frame bodies 1 fixed side by side. After all the frame bodies 1 are fixed laterally, they form a top support plane. The battery pack in the prior art can be fixed to the top support plane by bolts or other means. Therefore, in actual application, the lateral arrangement of all the frame bodies 1 is along the Y direction of the vehicle so that all the frame bodies 1 are fixed to each other before being installed and fixed on the vehicle.

[0038] Combination Figure 1 and Figure 2 A horizontal fixing part is fixedly connected between adjacent frame bodies 1, and a snap-fit ​​part that cooperates with the horizontal fixing part is provided on the left and right sides of the adjacent frame bodies 1 facing each other. Each frame body 1 has an anti-retraction part on the snap-fit ​​part to prevent the horizontal fixing part from exiting the snap-fit ​​part. At the same time, in order to further improve the stability of the connection between adjacent frame bodies 1, there are multiple horizontal fixing parts between adjacent frame bodies 1, and the multiple horizontal fixing parts are arranged along the vertical direction. Figure 1 The middle frame body 1 has two vertically arranged horizontal fixing parts near the front. Specifically, in conjunction with... Figure 3 The snap-fit ​​part includes a snap-fit ​​groove 101 integrally formed on the side of the frame body 1. The snap-fit ​​groove 101 is arranged along the front-back direction of the frame body 1, that is, the snap-fit ​​groove 101 is arranged perpendicular to the arrangement direction of all the frame bodies 1. The vertical cross-section of the snap-fit ​​groove 101 is rectangular. The anti-recoil part includes an anti-recoil plate integrally formed and fixedly connected to the frame body 1. The anti-recoil plate extends into the snap-fit ​​groove 101. The length direction of the anti-recoil plate is parallel to the length direction of the snap-fit ​​groove 101, and the width direction of the anti-recoil plate is vertical. Simultaneously, combined with... Figure 4 In this embodiment, each snap-fit ​​groove 101 is provided with two anti-recoil plates, an upper anti-recoil plate 2 and a lower anti-recoil plate 3. The upper anti-recoil plate 2 is connected to the top wall of the snap-fit ​​groove 101, and the lower anti-recoil plate 3 is connected to the bottom wall of the snap-fit ​​groove 101. A gap is provided between the bottom end of the upper anti-recoil plate 2 and the top end of the lower anti-recoil plate 3, so that the lateral fixing part can pass through the gap between the upper anti-recoil plate 2 and the lower anti-recoil plate 3 and be inserted into the snap-fit ​​groove 101.

[0039] Combination Figure 2 and Figure 6The horizontal fixing part is fixedly connected with a protrusion that cooperates with the upper anti-recoil plate 2 and the lower anti-recoil plate 3. Specifically, the horizontal fixing part includes a fixing seat 4 fixed to the frame body 1 by friction stir welding. The fixing seat 4 is arranged along the length direction of the frame body 1. The left side of the fixing seat 4 is inserted into the snap-fit ​​groove 101 in the left frame body 1, and the right side of the fixing seat 4 is inserted into the snap-fit ​​groove 101 in the right frame body 1. The protrusion includes vertical blocking protrusions 5 fixedly connected to the top and bottom of the fixing seat 4 by integral molding. Therefore, in this embodiment, vertical blocking protrusions 5 are provided near the left and right sides of the top and bottom of the fixing seat 4, so that the fixing seat 4 and all the vertical blocking protrusions 5 form an H-shaped connection blocking structure. With the cooperation of the vertical blocking protrusions 5 and the upper anti-recoil plate 2 or the lower anti-recoil plate 3, the adjacent frame bodies 1 cannot move away from each other laterally, thereby making the connection between the adjacent frame bodies 1 more stable. Of course, in other embodiments besides this one, only the upper anti-recoil plate 2 or the lower anti-recoil plate 3 can be provided. Correspondingly, only the vertical anti-protrusion 5 is provided at the top or bottom of the fixing seat 4, which can also strengthen the connection between adjacent frame bodies 1. Examples will not be given here.

[0040] Combination Figure 1 and Figure 3 In this embodiment, the frame body 1 has transverse through-slots 102 machined along the arrangement direction of all frame bodies 1, penetrating the left and right side walls. The front and rear sides of the frame body 1 are provided with front and rear connecting slots 103 communicating with the transverse through-slots 102. After all frame bodies 1 are horizontally welded and fixed side-by-side, the transverse through-slots 102 of all frame bodies 1 form a transversely through-mounting space 1000, which can be used to install and fix existing structures such as controllers and cooling systems that cooperate with the battery pack within the through-mounting space 1000. During the manufacturing process, to facilitate processing, the front and rear connecting slots 103 are simultaneously extruded during the extrusion molding of the main structure of the frame body 1, and then the transverse through-slots 102 are machined.

[0041] Combination Figure 1 and Figure 5 To enhance the protection of the structure within the through-installation space, in this embodiment, a vertical support plate 6 is fixedly connected in the front and rear connecting grooves 103 by welding. The vertical support plate 6 can withstand external impacts along the front and rear direction of the frame body 1, preventing the components installed in the through-installation space from being damaged by external impacts.

[0042] In this embodiment, adjacent frame bodies 1 are fixedly connected by friction stir welding, forming a first layer of fixed connection. Then, a fixing seat 4 is welded into the snap-fit ​​groove 101. The fixing seat 4 can enhance the connection strength between adjacent frame bodies 1, especially in the vertical direction, reducing vertical misalignment of adjacent frame bodies 1, thus forming a second layer of fixed connection. Finally, the vertical anti-recoil 5, the upper anti-recoil plate 2, and the lower anti-recoil plate 3 are tightly connected, which can help improve the connection strength of adjacent frame bodies 1 in the horizontal direction. Therefore, the frame connection structure in this solution is very stable.

[0043] A bracket includes the aforementioned frame connection structure. Due to the three-layer fixing relationship between the frame bodies 1, all the frame bodies 1 are very stable after being connected to each other. The use of aluminum alloy material can also play a very stable role in fixing the battery pack. Compared with the steel structure bracket method that must be used in the prior art, not only are the material and welding costs lower, but the weight of the bracket can also be effectively reduced.

[0044] Example 2 The difference between Example 2 and Example 1 is as follows: Figure 7 As shown, in this embodiment, a vertical through-groove 601 is formed within the vertical support plate 6 by extrusion molding, and a plurality of support ribs 7 are integrally extruded within the vertical through-groove 601. All support ribs 7 are arranged laterally along the left-right direction. By providing the vertical through-groove 601 within the vertical support plate 6, not only can the weight of the vertical support plate 6 be effectively reduced, but the vertical through-groove 601 also enables the vertical support plate 6 to withstand greater lateral impact, providing better protection for components installed within the through-mounting space. Figure 8 As shown, similar to the vertical through groove 601 provided on the vertical support plate 6, a weight-reducing deformation groove 401 is provided on the fixed base 4 in this embodiment, which can also reduce the weight of the component and make it less prone to damage after being impacted, thereby improving the stability of the entire structural connection.

[0045] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A frame connection structure, characterized in that: It includes at least two frame bodies arranged horizontally side by side and fixedly connected to each other. A horizontal fixing part is fixedly connected between adjacent frame bodies, and a snap-fit ​​part that cooperates with the horizontal fixing part is provided on the side facing each other of the adjacent frame bodies. Each frame body has an anti-retraction part on the snap-fit ​​part to prevent the horizontal fixing part from exiting the snap-fit ​​part.

2. The frame connection structure according to claim 1, characterized in that: The snap-fit ​​part includes a snap-fit ​​groove provided on the side of the frame body, and the anti-recoil part includes an anti-recoil plate fixedly connected to the frame body, the anti-recoil plate extending into the snap-fit ​​groove, and a protrusion that cooperates with the anti-recoil plate is fixedly connected to the transverse fixing part.

3. The frame connection structure according to claim 2, characterized in that: The frame body is provided with a transverse through groove that runs through the left and right side walls along the arrangement direction of all frame bodies. The front and rear sides of the frame body are provided with front and rear connecting grooves that communicate with the transverse through groove.

4. The frame connection structure according to claim 3, characterized in that: The snap-fit ​​groove is arranged along the front-back direction of the frame body, the length direction of the anti-recoil plate is parallel to the length direction of the snap-fit ​​groove, and the width direction of the anti-recoil plate is arranged vertically; the transverse fixing part includes a fixing seat along the length direction of the frame body, and the protrusion includes a vertical stop protrusion fixedly connected to the top and / or bottom of the fixing seat.

5. The frame connection structure according to claim 4, characterized in that: The anti-recoil plate includes an upper anti-recoil plate and a lower anti-recoil plate facing each other. The upper anti-recoil plate is located on the top wall of the snap-fit ​​groove, and the lower anti-recoil plate is located on the bottom wall of the snap-fit ​​groove. The protrusion includes vertical blocking protrusions fixedly connected to the top and bottom of the fixing seat. The fixing seat and all the vertical blocking protrusions form an H-shaped connection and blocking structure.

6. The frame connection structure according to claim 4, characterized in that: A vertical support plate is fixedly connected in the front and rear connecting grooves, and a vertical through groove is provided in the vertical support plate; a weight reduction deformation groove is provided on the fixed seat.

7. A frame connection structure according to claim 6, characterized in that: Several supporting ribs are fixedly connected inside the vertical through groove, and all supporting ribs are arranged horizontally along the left and right directions.

8. The frame connection structure according to claim 2, characterized in that: The snap-fit ​​part and the anti-retraction part are integrally formed with the frame body, and the protrusion part and the horizontal fixing part are integrally formed.

9. A frame connection structure according to claim 1, characterized in that: There are multiple horizontal fixing parts connecting adjacent frame bodies, and these multiple horizontal fixing parts are arranged along the vertical direction.

10. A bracket, characterized in that: Includes a frame connection structure as described in any one of claims 1-9.

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