Automatic adjusting piece for adjusting gap of battery pack

Abstract

The utility model provides an automatic adjusting piece for adjusting a gap between battery packs. The automatic adjusting piece comprises a supporting nut, the adjusting nut is screwed into an inner hole of the supporting nut, interference installation is formed between the adjusting nut and the supporting nut, a coaxial adjusting nut through hole is formed in the adjusting nut, and a platform for supporting a vehicle body metal plate is formed at the top; the friction element is pressed into the through hole of the adjusting nut, and the friction element and the adjusting nut are clamped to form static connection. An upper connecting end for clamping a supporting nut is arranged at the top of the fixed shell, a supporting end is integrally arranged below the fixed shell, and a space for mounting a battery pack metal plate and the nut is formed between the upper connecting end and the supporting end. When the adjusting nut is lifted due to friction force caused by thread interference of the friction element and the adjusting bolt, the gap between the battery pack metal plate and the automobile body metal plate is automatically adjusted, and the battery pack metal plate and the automobile body metal plate are supported by the adjusting nut and the supporting nut; after the adjusting bolt and the nut of the battery pack metal plate are locked, the whole structure is fixedly supported and connected, and the structural stability of a vehicle body is effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, and in particular to the field of axial adjustment components, specifically an automatic adjustment component for adjusting the gap of a battery pack. Background Technology

[0002] With the rapid development of the new energy vehicle industry, the power battery pack, as one of the core components, directly affects the vehicle's safety performance and service life through its installation accuracy and stability. During the assembly process between the vehicle body and the battery pack, uneven gaps often exist between the body sheet metal and the battery pack due to factors such as manufacturing tolerances, body vibration, and deformation caused by temperature changes. To ensure a reliable connection between the battery pack and the vehicle body and to meet requirements for sealing and vibration damping, adjusting components are usually installed between the two to achieve precise compensation of the gaps and rigid support.

[0003] Existing technology discloses an axial tolerance adjustment device (patent number CN215861232U), which includes a compensation component, a base component, and a washer and nut that mate with a connecting bolt. The compensation component is connected to the base component, which is used to connect to a connecting plate. The connecting bolt has an anti-loosening groove, and the washer has an anti-loosening part that mates with the anti-loosening groove. The anti-loosening part engages in the anti-loosening groove to prevent the connecting bolt from coming out of the tolerance adjustment device. This invention can screw two components onto each other across tolerance-affected joint gaps and prevent the connecting bolt from coming out of the tolerance adjustment device. However, both are formed by combining multiple parts, with only a few parts being similar, and their combined structures solve different problems.

[0004] A prior art patent (CN101881295A) discloses a nut mounting structure for a dashboard crossbeam. This structure includes a base nut and a moving nut nested within the base nut. The base nut has internal threads, and the moving nut has both external and internal threads. The external threads on the moving nut and the internal threads on the base nut engage. The moving nut is mounted on the base nut; counter-clockwise rotation screws it in, and clockwise rotation screws it out. The base nut is welded to the end plate of the dashboard crossbeam. The moving nut is mounted on the base nut and positioned between the end plate and the vehicle body sheet metal. A pre-designed gap d is provided between the moving nut and the body sheet metal, and this gap d is greater than the actual tolerance between them. This nut mounting structure, with its unique configuration, eliminates the influence of dimensional tolerances in the Y direction of the left and right side panel assemblies on the fit by rotating the moving nut out a certain distance, thus meeting assembly requirements. However, all tolerance compensation is achieved through rotation.

[0005] The prior art discloses a nut assembly for automatically eliminating the installation gap between the dashboard and the vehicle frame (patent number CN209617321U). This utility model includes a ring spring, an adjusting screw, an adjusting nut, a fixing sleeve, a fixing nut, a connecting screw, a vehicle frame sheet metal, and an instrument panel frame sheet metal. This utility model has a simple structure, strong practicality, and is easy to promote. It optimizes the traditional fastening structure that only uses connecting screws and fixing nuts. Through the reverse thread design of the adjusting screw and adjusting nut, the gap between the dashboard and the vehicle frame is automatically adjusted during installation, solving the installation gap problem caused by dashboard assembly without affecting other structures and appearance. However, all tolerance compensation is achieved through rotation. Summary of the Invention

[0006] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide an automatic adjusting component for adjusting the gap of a battery pack, so as to solve the difficulties of the prior art.

[0007] To achieve the above and other related objectives, this utility model provides an automatic adjusting component for adjusting the gap of a battery pack, comprising:

[0008] Support nut 1;

[0009] Adjusting nut 2, which is screwed into the inner hole of support nut 1, forming an interference fit between the two. A coaxial adjusting nut through hole 25 is provided in the adjusting nut 2, and a platform supporting the body sheet metal 6 is formed on the top of the adjusting nut 2.

[0010] Friction element 3 is pressed into the through hole 25 of the adjusting nut, and the two are locked together to form a static connection.

[0011] The fixed housing 4 has an upper connecting end 41 at the top for inserting the support nut 1, and a support end 43 integrally provided below it. A space for installing the battery pack sheet metal and the nut 7 is formed between the upper connecting end 41 and the support end 43, and the battery pack sheet metal and the nut 7 are locked and positioned by the limiting unit on the support end 43.

[0012] Furthermore, the support nut 1, adjusting nut 2, friction element 3, and fixed housing 4 are coaxially arranged.

[0013] In this technical solution, in order to adjust and support the gap between the vehicle body and the battery pack to ensure the stability of the vehicle body structure, a fixed housing 4 is set between the body sheet metal 6 and the battery pack sheet metal and nut 7 to form a support. The support nut 1, adjusting nut 2 and friction element 3 located in the fixed housing 4 facilitate the installation of adjusting bolt 8 to match the body sheet metal 6 and the battery pack sheet metal and nut 7, so as to achieve the purpose of axial adjustment of the gap. When locked, the friction element 3 located in the middle and the thread interference of the adjusting bolt 8 generate friction force, and then the adjusting nut 2 is lifted, so as to automatically adjust the gap between the battery pack sheet metal and the body sheet metal 6.

[0014] According to the preferred embodiment, the support nut 1 is circular, and the outer circumference of the support nut 1 is provided with knurling 5.

[0015] Furthermore, the knurling 5 uses vertical knurling or diagonal knurling.

[0016] In this technical solution, the support nut 1 undergoes plastic deformation with the inner wall of the mounting hole during the pressing process of the fixed housing 4 through the knurled structure, forming an interference fit, which greatly increases the friction and effectively resists the loosening that occurs during the adjustment and rotation of the friction element 3 and the adjusting bolt 8. In addition, the compact pressing structure formed within the limited space of the fixed housing 4 does not require additional locking space, making it suitable for adjusting the narrow gaps inside the battery pack structure; effectively providing strong support for subsequent gap adjustments.

[0017] According to the preferred embodiment, the adjusting nut 2 includes:

[0018] Nut body 21, wherein an adjusting nut through hole 25 for mounting friction element 3 is provided in the nut body 21;

[0019] Nut head 22, the nut head 22 is integrally disposed on the top of the nut body 21, and extends outward in a horizontal structure;

[0020] The limiting ring 23 is integrally and horizontally opened on the bottom inner wall of the adjusting nut through hole 25.

[0021] Furthermore, the inner diameter of the limiting ring 23 is smaller than the outer diameter of the friction element 3.

[0022] In this technical solution, the top structure of the nut head 22 is used to support the body sheet metal 6, and the inner side of the adjusting nut through hole 25 is used to embed the friction element 3. Since the inner diameter of the limiting ring 23 is smaller than the outer diameter of the friction element 3, the horizontal inner wall structure of the limiting ring 23 can be used to position the axial installation position of the friction element 3. In addition, during installation, it is necessary to ensure that the friction element 3 and the inner wall of the through hole form an interference fit to enhance the contact pressure.

[0023] According to the preferred embodiment, the nut head 22 has a guide notch 24 symmetrically provided at its circumferential center.

[0024] Furthermore, the structure of the guide notch 24 is set in a right-angled triangle.

[0025] In this technical solution, since the adjusting nut 2 and the support nut 1 are manually screwed together, in order to facilitate the use of screwing tools and make it easier for operators to install and adjust, guide notches 24 are symmetrically opened at the circumferential center of the nut head 22. The symmetrical guide notches 24 form an engagement structure with special tools such as wrenches, reducing the manual adjustment time during installation. In addition, the guide notch 24 has a right-angled triangular structure, and the edge of the notch provides a precise locking surface to avoid damage caused by the wrench slipping during the application of force.

[0026] According to a preferred embodiment, the friction element 3 includes:

[0027] The friction element body 31 is formed by a C-shaped structure surrounding it.

[0028] The outer locking tooth 32 is formed on the side of the friction element body 31 and is inclined toward the inner wall of the outer adjusting nut through hole 25.

[0029] The inner retaining arc plate 33 is formed on the side of the friction element body 31, and bends inward and downward. A pair of inner retaining arc plates 33 are symmetrically arranged, and the gap between them is smaller than the outer diameter of the adjusting bolt 8.

[0030] Furthermore, a pair of outer locking teeth 32 are also symmetrically arranged.

[0031] In this technical solution, the friction element 3 serves as a connecting transition structure between the adjusting nut 2 and the adjusting bolt 8. For this purpose, the friction element 3 utilizes a symmetrically inclined structure with external locking teeth 32 to contact the inner wall of the adjusting nut through hole 25 of the adjusting bolt 8. Friction and resistance are generated through the locking structure of the external locking teeth 32, thereby achieving the purpose of driving the adjusting nut 2 to move axially during the rotation process through the friction element 3.

[0032] Similarly, the symmetrical downward bending structure of the inner arc plate 33 utilizes its gap being smaller than the outer diameter of the adjusting bolt 8 to achieve a self-locking clamping effect, effectively preventing loosening and increasing pre-tightening force. During installation, it is necessary to ensure that a pair of inner arc plates are evenly attached to the bolt surface.

[0033] According to the preferred embodiment, one end of the friction element body 31 is provided with an opening 34, and the other end is provided with a corresponding port 35. During installation, the opening 34 and the port 35 are engaged with each other.

[0034] The top of the port 35 is provided with a limiting tooth 36, which is inclined toward the inner wall of the outer adjusting nut through hole 25 and is positioned by being engaged with the inner wall of the adjusting nut through hole 25 after installation.

[0035] Furthermore, opening 34 has a C-shaped structure.

[0036] In this technical solution, the C-shaped opening 34 of the friction element body 31 is aligned with the port 35. The elastic deformation of the C-shaped structure is used to achieve the meshing and locking of the opening and the port. The elastic meshing provides uniform contact pressure and reduces the risk of installation deformation. In addition, the top of the port 35 is provided with a limiting tooth 36. The limiting tooth 36 is inclined toward the inner wall of the through hole 25 of the adjusting nut. During the rotation, it forms a wedge-shaped clamping effect with the inner wall of the through hole to achieve dynamic locking in the rotation direction.

[0037] According to the preferred embodiment, the fixed housing 4 includes:

[0038] The upper connecting end 41 is configured in an annular structure and has an upper connecting end through hole 42 in which a support nut 1 is installed.

[0039] Support end 43, which is opened parallel to the lower part of the upper connecting end 41, with one end of the support end 43 being open and the other end being connected to the connecting rod structure 44;

[0040] Linkage structure 44, the top end of which is integrally connected to the outside of the upper connecting end 41, and the bottom end of which is connected to the same side of the support end 43.

[0041] The cavity for mounting the battery pack sheet metal and nut 7 is formed by the upper connecting end 41, the support end 43 and the connecting rod structure 44.

[0042] Furthermore, a limit notch 45 is provided at the end of the upper connecting end 41 near the connecting rod structure 44, which facilitates the installation, disassembly and adjustment of the support nut 1 and the adjusting nut 2, etc.

[0043] In this technical solution, the connecting rod structure 44 adopts an integral molding design, with the top connecting end 41 and the bottom support end 43 connected to form a stable structure. During the process of embedding the battery pack sheet metal into the installation channel formed by the opening side of the support end 43, the opening design of the support end 43 facilitates the side sliding of the battery pack sheet metal. Multi-directional positioning is achieved through the parallel layout of the support end 43 and the upper connecting end 41.

[0044] According to the preferred embodiment, the limiting unit on the support end 43 includes a second elastic anti-detachment structure 46 and a limiting end 47 integrally set at the end away from the connecting rod structure 44.

[0045] The second elastic anti-detachment structure 46 is arranged with its arc shape facing upward;

[0046] The support end 43 is vertically and upwardly oriented on both sides of the second elastic anti-detachment structure 46, and the limiting end 47 is integrally provided. After installation, the top of the limiting end 47 abuts against the bottom of the battery pack sheet metal.

[0047] Furthermore, a chamfer 48 is provided on the side of the limiting end 47 near the second elastic anti-detachment structure 46.

[0048] In this technical solution, during installation, the arc-shaped structure of the second elastic anti-detachment structure 46 and the chamfered structure 48 of the limiting end 47 facilitate the rapid sliding and positioning of the battery pack sheet metal. In addition, the deformation of the second elastic anti-detachment structure provides vertical clamping force through arc-shaped rebound to prevent the product from falling out after installation, and the limiting end 47 of the fixed outer shell 4 can also prevent the entire product from moving in other directions.

[0049] According to the preferred embodiment, a positioning strip 49 is provided on the inner wall of the upper connecting end through hole 42 corresponding to the knurling 5.

[0050] Furthermore, the positioning strips 49 are arranged in four sets symmetrically and at equal intervals.

[0051] In this technical solution, the support nut 1 is pre-installed in the through hole 42 at the upper connection end. During installation, the 4 sets of symmetrically distributed positioning strips 49 cooperate with the knurling 5 to form a uniform contact pressure in the entire circumference. The circumferential constraint force of the ring structure is used to achieve the anti-rotation effect of the nut, effectively suppressing the axial displacement during the rotation of the adjusting nut. While ensuring assembly efficiency, the structural stability in the adjustment state is significantly improved.

[0052] According to the preferred embodiment, the connecting rod structure 44 has an installation groove 410 on one side of the battery pack sheet metal and nut 7 cavity;

[0053] An elastic anti-detachment structure 411 is integrally provided at the bottom of the mounting groove 410.

[0054] Furthermore, the arc shape of the No. 1 elastic anti-slip structure 411 is set upwards.

[0055] In this technical solution, the mounting groove 410 is used to hold one end of the battery pack sheet metal. After installation, the bottom of the battery pack sheet metal is locked by the arc-shaped design of the No. 1 elastic anti-detachment structure 411. The elastic reaction force forms a continuous pressing effect, which can effectively prevent the sheet metal from shifting or coming off.

[0056] This invention presses the support nut 1 into the upper connecting end through hole 42 of the fixed housing 4, and forms an interference fit with the positioning strip 49 through the knurling 5 to achieve anti-rotation fixation. Then, the adjusting nut 2 is screwed into the inner hole of the support nut 1, and the two form a threaded connection. The friction element 3 is pressed into the through hole 25 of the adjusting nut. After the body sheet metal, adjusting bolt 8 and battery pack sheet metal are installed, the friction force generated by the thread interference between the friction element 3 and the adjusting bolt 8 causes the adjusting nut 2 to lift up, automatically adjusting the gap between the battery pack sheet metal 7 and the body sheet metal 2. The adjusting nut 2 and the support nut 1 support the battery pack sheet metal and the body sheet metal 6. In addition, after the adjusting bolt 8 and the nut of the battery pack sheet metal are locked, the entire structure completes the fixation, support and connection, thereby ensuring the stability of the vehicle body structure while supporting the gap between the entire vehicle body and the battery pack.

[0057] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, so as to facilitate an understanding of the features and advantages of the present invention. Attached Figure Description

[0058] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0059] Figure 2 This is a three-dimensional structural schematic diagram from another perspective of the present invention;

[0060] Figure 3 The diagram shown is an enlarged three-dimensional structural schematic of the adjusting nut in this utility model.

[0061] Figure 4 The diagram shown is an enlarged three-dimensional structural diagram of the support nut in this utility model.

[0062] Figure 5 The diagram shown is an enlarged three-dimensional structural schematic of the friction element in this utility model.

[0063] Figure 6 This is a magnified three-dimensional structural diagram of the friction element from another perspective in this utility model;

[0064] Figure 7 The diagram shown is an enlarged three-dimensional structural diagram of the fixed outer shell in this utility model;

[0065] Figure 8 The diagram shown is an enlarged three-dimensional structural schematic of the fixed outer shell from another perspective in this utility model.

[0066] Figure 9 The diagram shows the usage status of this utility model.

[0067] Figure 10 The diagram shown is a cross-sectional view illustrating the usage state of this utility model.

[0068] Figure 11 Displayed as Figure 9 An enlarged schematic diagram, excluding the body panel;

[0069] Label Explanation

[0070] 1. Support nut; 5. Knurling;

[0071] 2. Adjusting nut; 21. Nut body; 22. Nut head; 23. Limiting ring; 24. Guide notch; 25. Adjusting nut through hole;

[0072] 3. Friction element; 31. Friction element body; 32. Outer retaining tooth; 33. Inner retaining arc plate; 34. Opening; 35. Port; 36. Limiting tooth;

[0073] 4. Fixed outer shell; 41. Upper connecting end; 42. Upper connecting end through hole; 43. Support end; 44. Linkage structure; 45. Limiting notch; 46. Second elastic anti-detachment structure; 47. Limiting end; 48. Chamfer; 49. Positioning strip; 410. Installation groove; 411. First elastic anti-detachment structure.

[0074] 6. Body sheet metal; 7. Battery pack sheet metal and nuts; 8. Adjusting bolts. Detailed Implementation

[0075] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0076] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of protection of this utility model may have fewer components, have other components not shown in the drawings, different components, components arranged differently, or components with different connections, etc. Furthermore, two or more components shown in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0077] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, “an” or “a” and similar terms do not necessarily indicate a quantity limitation. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0078] This utility model proposes an automatic adjusting component for adjusting the gap of a battery pack. It is used in the gap adjustment process. This utility model does not limit the type of body part, but the structure of the automatic adjusting component for adjusting the gap of the battery pack is particularly suitable for the needs of adjusting the gap between the body sheet metal and the battery pack.

[0079] In general, the automatic adjusting component for adjusting the gap of the battery pack proposed in this utility model mainly includes a support nut 1, an adjusting nut 2, a friction element 3, and a fixed housing 4. See also... Figure 1 It shows the arrangement of the support nut 1, the adjusting nut 2, the friction element 3, and the fixed housing 4.

[0080] To achieve automatic adjustment and support of the gap between the vehicle body sheet metal and the battery pack, and to address the issue raised in the background art regarding the rapid development of the new energy vehicle industry, where the installation accuracy and stability of the power battery pack, as a core component, directly affect the vehicle's safety performance and service life, uneven gaps often exist between the vehicle body sheet metal and the battery pack during the assembly process due to manufacturing tolerances, vehicle body vibration, and deformation caused by temperature changes. To ensure a reliable connection between the battery pack and the vehicle body and meet requirements for sealing and vibration damping, an adjusting component is usually required between the two to achieve precise gap compensation and rigid support. Therefore, in the technical solution provided in this embodiment, the supporting nut 1 is pressed into the upper connecting end through hole 42 of the fixed housing 4, and an interference fit is formed between the knurled nut 5 and the positioning strip 49 to achieve anti-rotation fixation. Then, the adjusting nut 2 is screwed into the supporting nut. In the inner hole of 1, a threaded connection is formed between the two, and the friction element 3 is pressed into the through hole 25 of the adjusting nut. After the body sheet metal, adjusting bolt 8 and battery pack sheet metal are installed, the friction force caused by the thread interference between the friction element 3 and adjusting bolt 8 causes the adjusting nut 2 to lift up, automatically adjusting the gap between the battery pack sheet metal 7 and the body sheet metal 2. The adjusting nut 2 and the support nut 1 support the battery pack sheet metal and the body sheet metal 6. In addition, after the adjusting bolt 8 and the nut of the battery pack sheet metal are tightened, the entire structure completes the fixed support and connection, thereby ensuring the stability of the vehicle body structure while supporting the gap between the vehicle body and the battery pack.

[0081] To achieve the goal of adjusting and supporting the gap between the vehicle body and the battery pack, thereby ensuring the stability of the vehicle body structure, such as... Figure 1 As shown, the support nut 1, adjusting nut 2, friction element 3, and fixed housing 4 are coaxially arranged. Specifically, the top of the fixed housing 4 has an upper connecting end 41 for inserting the support nut 1, which is used to press the support nut 1 into the upper connecting end 41 at the top of the fixed housing 4. Then, the adjusting nut 2 is screwed into the inner hole of the support nut 1 through an interference fit. Its top platform is used to support the body sheet metal 6. Then, the friction element 3 with external locking teeth 32 and internal locking arc plate 33 is pressed into the through hole 25 of the adjusting nut to form a static connection. Finally, the battery pack sheet metal and nut 7 are embedded into the support end 43 below the fixed housing 4 to complete locking and positioning. By rotating the adjusting bolt 8, it is inserted into the friction element 3 and generates friction force through the interference of the threads of the friction element 3, which links to form the axial lifting or lowering of the adjusting nut 2, dynamically adjusting the gap between the body sheet metal 6 and the battery pack sheet metal.

[0082] By using the above structure, a fixed outer shell 4 is set between the body sheet metal 6 and the battery pack sheet metal and nut 7 to form a support. The support nut 1, adjusting nut 2 and friction element 3 located in the fixed outer shell 4 facilitate the installation of adjusting bolt 8 to match the body sheet metal 6 and the battery pack sheet metal and nut 7, so as to achieve the purpose of axial adjustment of the gap. When locking, the friction element 3 located in the middle and the thread interference of the adjusting bolt 8 generate friction force, and then the adjusting nut 2 is lifted to achieve the purpose of automatically adjusting the gap between the battery pack sheet metal and the body sheet metal 6. The gap compensation and dynamic locking are completed simultaneously in a narrow space to ensure the long-term stability of the connection structure between the body and the battery pack.

[0083] It should be specifically explained that the fixed housing 4 includes an upper connecting end 41, a connecting rod structure 44, and a support end 43 integrally arranged from top to bottom. The upper connecting end 41 is arranged in a ring structure with an upper connecting end through hole 42 for installing the support nut 1 inside. The support end 43 is opened parallel to the lower part of the upper connecting end 41. The top end of the connecting rod structure 44 is integrally connected to the outside of the upper connecting end 41, and the bottom end is connected to the same side of the support end 43. The upper connecting end 41, the support end 43, and the connecting rod structure 44 form a cavity for installing the battery pack sheet metal and the nut 7. The connecting rod structure 44 adopts an integral molding design, with the top connected to the upper connecting end 41 and the bottom support end 43 to form a stable structure. In addition, in order to facilitate the lateral sliding of the battery pack sheet metal into the fixed housing 4 for quick installation, the end of the support end 43 away from the connecting rod structure 44 is open. During use, it is convenient for the battery pack sheet metal to be embedded in the installation channel formed by the opening side of the support end 43. Multi-directional positioning is achieved through the parallel layout of the support end 43 and the upper connecting end 41.

[0084] Considering that the upper connecting end 41 and the internal support nut 5 can be kept locked, the support nut 1 is circular, and the outer circumference of the support nut 1 is provided with knurling 5. The knurling 5 adopts vertical knurling or oblique knurling. The support nut 1 undergoes plastic deformation with the inner wall of the mounting hole during the pressing process of the fixed housing 4 through the knurling structure, forming an interference fit, which greatly improves the friction and effectively resists the loosening that occurs during the adjustment and rotation of the friction element 3 and the adjusting bolt 8. In addition, the compact pressing structure formed in the limited space of the fixed housing 4 does not require additional locking space, which is suitable for adjusting the narrow gap inside the battery pack structure; effectively providing strong support for the subsequent gap adjustment.

[0085] Correspondingly, positioning strips 49 are provided on the inner wall of the upper connecting end through hole 42 corresponding to the knurling 5. Four sets of positioning strips 49 are symmetrically and evenly spaced. The support nut 1 is pre-installed in the upper connecting end through hole 42. During installation, the four sets of symmetrically distributed positioning strips 49 cooperate with the knurling 5 to form a uniform contact pressure in the entire circumference. The circumferential constraint force of the ring structure achieves the effect of preventing the nut from rotating, effectively suppressing the axial displacement during the rotation of the adjusting nut. While ensuring assembly efficiency, it significantly improves the structural stability in the adjustment state. In addition, a limit notch 45 is provided at the end of the upper connecting end 41 near the connecting rod structure 44. The notch facilitates the installation, disassembly and adjustment of the support nut 1 and the adjusting nut 2, etc.

[0086] Next, to prevent the product from detaching after being installed in the fixed housing 4, a second elastic anti-detachment structure 46 is integrally provided at the end of the support end 43 away from the connecting rod structure 44, with the arc of the second elastic anti-detachment structure 46 facing upwards. Similarly, to prevent the entire product from moving in other directions after installation, a limiting end 47 is integrally provided vertically upwards on both sides of the support end 43 perpendicular to the second elastic anti-detachment structure 46, with a chamfer 48 on the side of the limiting end 47 near the second elastic anti-detachment structure 46. During installation, the arc structure of the second elastic anti-detachment structure 46 and the chamfer 48 of the limiting end 47 facilitate the quick sliding and positioning of the battery pack sheet metal. After installation, the top of the limiting end 47 abuts against the bottom of the battery pack sheet metal. In addition, the axial deformation of the second elastic anti-detachment structure 46 provides vertical clamping force through arc rebound to prevent the product from detaching after installation, and the limiting end 47 of the fixed housing 4 also prevents the entire product from moving in other directions.

[0087] Furthermore, the connecting rod structure 44 has an installation groove 410 on one side of the battery pack sheet metal and nut 7 cavity. The installation groove 410 is used to hold one end of the battery pack sheet metal. A first elastic anti-detachment structure 411 is integrally provided at the bottom of the installation groove 410. The arc shape of the first elastic anti-detachment structure 411 is facing upward. In use, the bottom of the installed battery pack sheet metal is locked by the arc shape of the first elastic anti-detachment structure 411. The elastic reaction force forms a continuous pressing effect, which can effectively prevent the sheet metal from shifting or coming off.

[0088] As mentioned above, the top of the adjusting nut 2 is used to support the body sheet metal 6. In order to connect the supporting nut 1 and the friction element 3, the adjusting nut 2 includes a nut body 21, a nut head 22 and a limiting ring 23. The nut head 22 is integrally set on the top of the nut body 21 to support the body sheet metal 6, and extends outward in a horizontal structure. An adjusting nut through hole 25 for installing the friction element 3 is opened in the nut body 21. The friction element 3 is embedded in the adjusting nut through hole 25. A limiting ring 23 is integrally opened inward horizontally on the bottom inner side wall of the adjusting nut through hole 25. The inner diameter of the limiting ring 23 is smaller than the outer diameter of the friction element 3. The horizontal inner wall structure of the limiting ring 23 can be used to position the axial installation position of the friction element 3. In addition, during installation, it is necessary to ensure that the friction element 3 forms an interference fit with the inner wall of the through hole to enhance the contact pressure.

[0089] Preferably, since the adjusting nut 2 and the support nut 1 are manually screwed together, in order to facilitate the use of screwing tools and make it easier for operators to install and adjust, a guide notch 24 is symmetrically opened at the circumferential center of the nut head 22. The symmetrical guide notch 24 forms an engagement structure with special tools such as wrenches, reducing the manual adjustment time during installation. In addition, the guide notch 24 has a right-angled triangular structure, and the edge of the notch provides a precise locking surface to prevent the wrench from slipping and causing damage during the application of force.

[0090] Based on this, in order to achieve the linkage between the adjusting bolt 8 and the adjusting nut 1, this embodiment uses a friction element 3 as a connecting transition structure between the adjusting nut 2 and the adjusting bolt 8. The friction element 3 includes a friction element body 31, an outer retaining tooth 32, and an inner retaining arc plate 33. The friction element body 31 is formed by a C-shaped structure, which facilitates the insertion of the supporting nut 1 and ensures the connection effect through elastic deformation. Next, to further ensure the connection strength between the friction element 3 and the adjusting nut 2, an outer retaining tooth 32 is inclined on the side of the friction element body 31 and faces the inner wall of the outer adjusting nut through hole 25. A pair of outer retaining teeth 32 are symmetrically arranged. In use, the friction element 3 uses the symmetrical inclined design of the outer retaining teeth 32 to contact the inner wall of the adjusting nut through hole 25 of the adjusting bolt 8. Friction and resistance are generated through the retaining tooth structure of the outer retaining teeth 32, so that the axial movement of the adjusting nut 2 is driven by the friction element 3 during the rotation process.

[0091] Furthermore, to achieve the clamping purpose between the friction element 3 and the adjusting bolt 8, an inner clamping arc plate 33 is provided on the side of the friction element body 31, bent inward and downward. A pair of inner clamping arc plates 33 are symmetrically arranged, and the gap between them is smaller than the outer diameter of the adjusting bolt 8. Through the symmetrical downward bending structure of the inner clamping arc plates 33, the self-locking clamping effect is achieved by utilizing the characteristic that the gap is smaller than the outer diameter of the adjusting bolt 8, which effectively prevents loosening and improves the pre-tightening force. During installation, it is necessary to ensure that the pair of inner clamping arc plates are evenly attached to the bolt surface.

[0092] Furthermore, as mentioned above, the friction element body 31 is formed by a C-shaped structure. More preferably, one end of the friction element body 31 is provided with an opening 34, which is C-shaped, and the other end is provided with a port 35. During installation, the opening 34 and the port 35 engage with each other. The C-shaped opening 34 of the friction element body 31 is aligned with the port 35. The elastic deformation of the C-shaped structure is used to lock the opening and the port. The elastic engagement provides uniform contact pressure and reduces the risk of installation deformation. In addition, the top of the port 35 is provided with a limiting tooth 36. The limiting tooth 36 is inclined towards the inner wall of the outer adjusting nut through hole 25. After installation, it is locked into the inner wall of the adjusting nut through hole 25. During rotation, it forms a wedge-shaped clamping effect with the inner wall of the through hole to achieve dynamic locking in the direction of rotation.

[0093] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An automatic adjusting component for adjusting the gap of a battery pack, characterized in that, include: Support nut (1); Adjusting nut (2), the adjusting nut (2) is screwed into the inner hole of the support nut (1), and the two form an interference fit. A coaxial adjusting nut through hole (25) is opened in the adjusting nut (2), and a platform supporting the body sheet metal (6) is formed on the top of the adjusting nut (2). Friction element (3) is pressed into the through hole (25) of the adjusting nut, and the two are locked together to form a static connection; The fixed housing (4) has an upper connecting end (41) at the top for inserting the support nut (1), and a support end (43) integrally provided below. A space for installing the battery pack sheet metal and nut (7) is formed between the upper connecting end (41) and the support end (43), and the battery pack sheet metal and nut (7) are locked and positioned by the limiting unit on the support end (43).

2. The automatic adjusting component for adjusting the gap of a battery pack according to claim 1, characterized in that, The support nut (1) is circular, and the outer circumference of the support nut (1) is provided with knurling (5).

3. The automatic adjusting component for adjusting the gap of a battery pack according to claim 2, characterized in that, The adjusting nut (2) includes: Nut body (21), wherein an adjusting nut through hole (25) for installing friction element (3) is provided in the nut body (21); Nut head (22), the nut head (22) is integrally disposed on the top of the nut body (21) and extends outward in a horizontal structure; The limiting ring (23) is integrally and horizontally opened on the bottom inner wall of the adjusting nut through hole (25).

4. The automatic adjusting component for adjusting the gap of a battery pack according to claim 3, characterized in that, The nut head (22) has a guide notch (24) symmetrically provided at its circumferential center.

5. The automatic adjusting component for adjusting the gap of a battery pack according to claim 4, characterized in that, The friction element (3) includes: The friction element body (31) is formed by a C-shaped structure surrounding it; The outer locking teeth (32) are formed on the side of the friction element body (31) and are inclined toward the inner wall of the outer adjusting nut through hole (25); The inner arc plate (33) is opened on the side of the friction element body (31) and bends inward and downward. A pair of inner arc plates (33) are symmetrically arranged, and the gap between them is smaller than the outer diameter of the adjusting bolt (8).

6. The automatic adjusting component for adjusting the gap of a battery pack according to claim 5, characterized in that, The friction element body (31) has an opening (34) at one end and a port (35) at the other end. During installation, the opening (34) and the port (35) engage with each other. The top of the port (35) is provided with a limiting tooth (36), which is inclined toward the inner wall of the outer adjusting nut through hole (25) and is positioned by being inserted into the inner wall of the adjusting nut through hole (25) after installation.

7. The automatic adjusting component for adjusting the gap of a battery pack according to claim 6, characterized in that, The fixed housing (4) includes: The upper connecting end (41) is provided in an annular structure and has an upper connecting end through hole (42) in which a support nut (1) is installed. The support end (43) is opened parallel to the lower part of the upper connecting end (41), and one end of the support end (43) is open, while the other end is connected to the connecting rod structure (44). Linkage structure (44), the top end of which is integrally connected to the outside of the upper connecting end (41), and the bottom end of which is connected to the same side of the support end (43); The cavity for mounting the battery pack sheet metal and nuts (7) is formed by the upper connecting end (41), the support end (43) and the connecting rod structure (44).

8. The automatic adjusting component for adjusting the gap of a battery pack according to claim 7, characterized in that, The limiting unit on the support end (43) includes a second elastic anti-detachment structure (46) and a limiting end (47) integrally set at one end away from the connecting rod structure (44); The second elastic anti-detachment structure (46) is arranged with its arc shape facing upward; The support end (43) is vertically and upwardly oriented on both sides of the second elastic anti-detachment structure (46) with a limit end (47). After installation, the top of the limit end (47) abuts against the bottom of the battery pack sheet metal.

9. The automatic adjusting component for adjusting the gap of a battery pack according to claim 8, characterized in that, A positioning strip (49) is provided on the inner wall of the upper connecting end through hole (42) corresponding to the knurling (5).

10. The automatic adjusting component for adjusting the gap of a battery pack according to claim 9, characterized in that, The connecting rod structure (44) has an installation groove (410) on one side of the cavity where the battery pack sheet metal and nut (7) are installed; An elastic anti-detachment structure (411) is integrally provided at the bottom of the mounting groove (410).

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