Mounting device, battery kit, and electric vehicle

Abstract

Disclosed are a mounting device, a battery kit, and an electric vehicle. The mounting device (100) comprises a mounting screw (10), a pressing cap (20), a locking sleeve (30), a tightening threaded sleeve (40) and a first sealing member (51), wherein a first end (11) of the mounting screw is configured to sequentially pass through the locking sleeve, a workpiece to be mounted and a mounting body (220) in the direction from the locking sleeve to the workpiece to be mounted; the pressing cap is connected to the first end of the mounting screw and is configured to abut against the mounting body; an external thread (13) is provided on a second end (12) of the mounting screw; the tightening threaded sleeve is in threaded connection with the second end of the mounting screw, so as to prevent the locking sleeve from disengaging from the mounting screw; and the first sealing member is configured to seal a gap between the mounting screw and a hole wall of a through hole in the locking sleeve. By means of the mounting device, the problem of it being impossible to fully seal a clearance notch provided in a locking sleeve of an existing mounting device is solved.

Description

Mounting device, battery kit and electric vehicle

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on February 26, 2024, with application number 202420346748.6 and invention name “Mounting device, battery kit and electric vehicle”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of new energy battery installation tooling, and in particular to a mounting device, a battery kit and an electric vehicle. Background Art

[0003] In the related art, for workpieces that need to be quickly disassembled, replaced, or assembled, a mounting device is used to assemble and fix the workpiece on a mounting carrier. When the workpiece needs to be replaced, the mounting device can be used to quickly disassemble, replace, or install the workpiece.

[0004] With the continuous development and increasing popularity of electric vehicles, electric vehicle batteries continue to wear out during use. When the battery reaches the end of its service life, it needs to be replaced. To enable quick battery replacement, the battery is mounted on the vehicle frame using a mounting device.

[0005] As shown in FIG1 , the mounting device a100′ includes a mounting screw a10′, a locking sleeve a30′, and a tightening member. When the mounting device a100′ is used to mount and fix a battery on a mounting carrier, the mounting screw a10′ is passed through the mounting carrier, the battery, and the locking sleeve a30′ from top to bottom in sequence. The tightening member is then threadedly connected to the mounting screw to prevent the locking sleeve from detaching from the mounting screw a10′. The mounting screw a10′ and the locking sleeve a30′ then together mount and fix the battery on the mounting carrier. In the mounting device a100′, since the shaft of the mounting screw a10′ is provided with a protruding structure for cooperating with the internal structure of the locking sleeve a30′, the locking sleeve a30′ must be provided with an avoidance notch 110 for avoiding the protruding structure in order to complete the insertion of the mounting screw a10′ from top to bottom into the interior of the locking sleeve a30′. Since the lock sleeve a30′ is provided with an avoidance gap 110 and the avoidance gap 110 has an irregular shape, the avoidance gap 110 cannot be completely sealed, which will cause the lubricating material in the lock sleeve a30′ to evaporate and lose, and external water vapor and impurities enter the lock sleeve a30′ through the avoidance gap 110, causing wear and rust of the component structures in the lock sleeve a30′.

[0006] Summary of the Invention

[0007] The purpose of the embodiments of the present application is to provide a mounting device, a battery kit and an electric vehicle, including but not limited to solving the problem that the avoidance gap set in the lock sleeve in the existing mounting device cannot be completely sealed, resulting in the volatilization and loss of the lubricating substance in the lock sleeve and the entry of external water vapor and impurities into the lock sleeve causing wear and rust.

[0008] The technical solution adopted in the embodiment of this application is:

[0009] According to a first aspect of the present application, a mounting device is provided, comprising:

[0010] A mounting screw having a first end and a second end, wherein the second end of the mounting screw is provided with an external thread;

[0011] The locking sleeve is fixed relative to the workpiece to be mounted, and the first end of the mounting screw is used to pass through the locking sleeve, the workpiece to be mounted, and the mounting carrier in sequence along the direction from the locking sleeve to the workpiece to be mounted;

[0012] A pressing cap is connected to the first end of the mounting screw, and the pressing cap is used to abut against the mounting carrier;

[0013] The tightening screw sleeve is provided with a threaded hole adapted to the external thread, the tightening screw sleeve is threadedly connected to the second end of the mounting screw, and the tightening screw sleeve blocks the locking sleeve from being separated from the mounting screw, so that the workpiece to be mounted and the mounting carrier are clamped between the pressure cap and the locking sleeve;

[0014] The first sealing member is sleeved on the mounting screw and located at the through hole of the locking sleeve. The first sealing member is used for sealing the gap between the mounting screw and the hole wall of the through hole of the locking sleeve.

[0015] Compared with the existing mounting device a, the mounting device of the present application no longer has an avoidance gap, and adopts a method of passing through the locking sleeve, the workpiece to be mounted and the mounting carrier in sequence along the direction from the locking sleeve to the workpiece to be mounted. Therefore, the through hole of the locking sleeve is a circular hole that is compatible with the rod body of the mounting screw, so that the first sealing member can be used to completely seal the gap between the mounting screw and the hole wall of the through hole of the locking sleeve, thereby preventing the lubricating substance in the locking sleeve from volatilizing and losing, and preventing external water vapor and impurities from entering the interior of the locking sleeve through the gap between the mounting screw and the hole wall of the through hole of the locking sleeve, thereby preventing problems such as wear and rust.

[0016] In some embodiments of the present application, a guide pin is provided on the shaft of the mounting screw, a guide groove is provided in the wall of the through hole of the locking sleeve, the guide pin is slidably disposed within the guide groove, and a first sealing member is disposed between the guide groove and the end surface of the second end of the locking sleeve, which is away from the mounting screw. Furthermore, the guide groove extends in an oblique direction relative to the axis of the locking sleeve, and the locking sleeve is provided with a limiting portion, which is configured to cooperate with the workpiece to be mounted to limit the rotation of the locking sleeve relative to the workpiece to be mounted. The relative movement between the locking sleeve and the mounting screw is guided by the cooperation between the guide pin and the guide groove, making the relative movement between the locking sleeve and the mounting screw stable and accurate.

[0017] In some embodiments of the present application, the limiting portion is a flange structure provided at one end of the locking sleeve away from the pressure cap, and the flange structure is used to be fixedly connected to the workpiece to be mounted, so that the relative position between the locking sleeve and the workpiece to be mounted is fixed.

[0018] In some embodiments of the present application, the pressure cap is fixedly connected to the first end of the mounting screw rod; or, the pressure cap is detachably connected to the first end of the mounting screw rod.

[0019] In some embodiments of the present application, the projection of the pressure cap along the axial direction of the mounting screw has a long side direction and a short side direction that are perpendicular to each other, wherein the pressure cap can be pressed against the hanging carrier after the long side direction of the pressure cap is rotated relative to the hanging carrier.

[0020] In some embodiments of the present application, the guide groove extends through the outer wall of the locking sleeve, and the mounting device further includes a second seal member that engages and seals the guide groove, thereby sealing the guide groove from the outside. This prevents lubricant within the locking sleeve from evaporating and escaping through the guide groove, and further prevents external moisture and impurities from entering the locking sleeve through the guide groove, thereby preventing wear and corrosion. The second seal member is spaced apart from the guide pin head, thereby ensuring that the guide pin head does not interfere with the second seal member during relative sliding movement within the guide groove.

[0021] In some embodiments of the present application, there are two guide pins, symmetrically arranged relative to the axis of the mounting screw; and there are two guide slots, one corresponding to each of the two guide pins. This prevents the mounting screw from deflecting relative to the locking sleeve, allowing for stable and smooth relative movement between the mounting screw and the locking sleeve.

[0022] In some embodiments of the present application, the mounting device further includes a pin member, which is mounted on the mounting screw, with the axis of the pin member perpendicular to the axis of the mounting screw. Both ends of the pin member protrude from the mounting screw to form two guide pin heads. This method of forming the two guide pin heads is simple, effective, and highly efficient.

[0023] In some embodiments of the present application, the through hole of the locking sleeve includes a first hole segment and a second hole segment, with a first stepped surface formed between the first hole segment and the second hole segment. The guide slot extends from the end of the guide slot distal to the pressure cap to the first stepped surface, and the guide pin head slides directly into the guide slot from the slot end opening on the first stepped surface, thereby improving assembly efficiency. The mounting device also includes a third sealing member disposed between the end surface of the tightening nut proximal to the pressure cap and the first stepped surface to form a seal, further sealing the interior of the locking sleeve.

[0024] In some embodiments of the present application, the guide slot includes a first slot segment and a second slot segment that are interconnected. The first slot segment extends obliquely relative to the axis of the locking sleeve, while the second slot segment extends parallel to the axis of the locking sleeve. This sliding distance of the second slot segment allows for a slight floating clearance between the workpiece to be mounted and the mounting body, thereby facilitating mounting operations. Furthermore, the end of the second slot segment, distal from the first slot segment, extends through the first step surface.

[0025] In some embodiments of the present application, the mounting device further includes a sealing assembly and a fourth sealing member. The sealing assembly is mounted within the end of the through hole of the locking sleeve away from the pressure cap. The tightening nut is provided with a second stepped surface. The fourth sealing member is sleeved on the tightening nut and abuts against the second stepped surface. The side of the fourth sealing member away from the second stepped surface abuts against the sealing assembly. This further seals the interior of the locking sleeve, thereby better preventing the lubricant in the locking sleeve from volatilizing and losing, and better preventing external moisture and impurities from entering the locking sleeve, thereby preventing wear and rust.

[0026] In some embodiments of the present application, a first assembly ring groove is formed in the wall of the through hole of the locking sleeve, and the first sealing member is installed in the first assembly ring groove. In this way, the first sealing member is confined in the first assembly ring groove and does not slide along the axis of the locking sleeve and escape from the first assembly ring groove.

[0027] According to a second aspect of the present application, a battery kit is provided. Specifically, the battery kit includes a battery and the aforementioned mounting device, wherein the battery includes a battery box having a mounting through hole, and a mounting screw of the mounting device sequentially passes through the mounting through hole and the mounting carrier in a direction from a locking sleeve to a workpiece to be mounted.

[0028] According to a third aspect of the present application, an electric vehicle is provided, which includes a vehicle frame and the aforementioned battery kit, wherein the battery is mounted on the vehicle frame via a mounting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or exemplary technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] FIG1 is a schematic diagram of the assembly structure of an existing mounting device;

[0031] FIG2 is a schematic diagram of the assembly structure of a mounting device provided in an embodiment of the present application;

[0032] FIG3 is a schematic cross-sectional view of the mounting device shown in FIG2 ;

[0033] FIG4 is an enlarged schematic diagram of point A in FIG3 ;

[0034] FIG5 is an exploded schematic diagram of the mounting device shown in FIG2 ;

[0035] FIG6 is a schematic cross-sectional view of the locking sleeve in the mounting device shown in FIG2 ;

[0036] FIG7 is a schematic structural diagram of the first sealing member in the hanging device shown in FIG2 ;

[0037] FIG8 is a schematic diagram of the assembly structure of another mounting device provided in an embodiment of the present application;

[0038] FIG9 is a schematic cross-sectional view of the mounting device shown in FIG8 ;

[0039] FIG10 is a schematic diagram of the assembly structure of the battery kit according to an embodiment of the present application assembled on a hanging carrier;

[0040] FIG11 is an enlarged schematic diagram of point B in FIG10 ;

[0041] FIG12 is a schematic structural diagram of an electric vehicle according to an embodiment of the present application.

[0042] Among them, the reference numerals in the figures are:

[0043] 100′, mounting device a; 10′, mounting screw a; 30′, locking sleeve a; 110, avoidance gap;

[0044] 100. Mounting device;

[0045] 10. Mounting screw; 11. First end; 12. Second end; 13. External thread; 14. Guide pin head;

[0046] 20. Pressure cap;

[0047] 30. Locking sleeve; 31. Guide groove; 311. First groove section; 312. Second groove section; 32. Restriction portion; 33. First hole section; 34. Second hole section; 35. First step surface; 36. First assembly ring groove; 37. Second assembly ring groove;

[0048] 40. Tighten the screw sleeve; 41. Threaded hole; 42. Second step surface

[0049] 51, first sealing member; 511, first sealing fin; 512, second sealing fin; 513, third sealing fin; 52, second sealing member; 53, third sealing member; 54, fourth sealing member;

[0050] 60. Cover assembly; 61. Cover body; 62. Spring;

[0051] 220, hanging carrier; 221, perforation;

[0052] 300, battery; 310, battery box;

[0053] 400. Electric vehicle; 410. Frame; 420. Drive motor; 430. Wheel. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit this application.

[0055] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly on the other component or indirectly on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The terms "upper", "lower", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of description and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "first" and "second" are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0056] In order to illustrate the technical solution provided by this application, a detailed description is given below with reference to specific drawings and embodiments.

[0057] In the related art, batteries are assembled and fixed to the vehicle frame using a mounting device. As shown in Figure 1, the mounting device a100' includes a mounting screw a10', a locking sleeve a30', and a tightening member. When using the mounting device a100' to mount a battery workpiece to be mounted on a mounting carrier, the mounting screw a10' is passed through the mounting carrier, the workpiece to be mounted, and the locking sleeve a30' from top to bottom. The tightening member is then threaded onto the mounting screw to prevent the locking sleeve from separating from the mounting screw a10'. The mounting screw a10' and the locking sleeve a30' then together secure the workpiece to be mounted on the mounting carrier. In the mounting device a100′, since the shaft of the mounting screw a10′ is provided with a protrusion structure for cooperating with the internal structure of the locking sleeve a30′, the locking sleeve a30′ must be provided with an escape notch 110 for avoiding the protrusion structure in order to complete the insertion of the mounting screw a10′ from top to bottom into the locking sleeve a30′. Due to the provision of the escape notch 110 in the locking sleeve a30′ and the irregular shape of the escape notch 110, the escape notch 110 cannot be completely sealed, thus causing the lubricant in the locking sleeve a30′ to evaporate and be lost. In addition, external moisture and impurities enter the locking sleeve a30′ through the escape notch 110, causing wear and corrosion of the components and structures within the locking sleeve a30′.

[0058] Based on the above considerations, an embodiment of the present application provides a new type of mounting device, and the mounting device and the battery are matched with each other to form a battery kit, which is used in electric vehicles. That is, the mounting device is used to mount and fix the battery on the frame of the electric vehicle, so that the battery can be easily and quickly installed or quickly disassembled and replaced. Among them, the mounting device provided in the embodiment of the present application no longer has an avoidance gap compared to the existing mounting device, and adopts a method of passing through the locking sleeve, the workpiece to be mounted, and the mounting carrier in sequence along the direction from the locking sleeve to the workpiece to be mounted. Therefore, the through hole of the locking sleeve is a circular hole that is compatible with the rod of the mounting screw, so that the gap between the mounting screw and the hole wall of the through hole of the locking sleeve can be completely sealed by a first sealing member, thereby preventing the lubricant in the locking sleeve from volatilizing and losing, and preventing external water vapor and impurities from entering the interior of the locking sleeve through the gap between the mounting screw and the hole wall of the through hole of the locking sleeve, thereby preventing the problem of wear and rust.

[0059] As shown in Figures 2 to 7, the mounting device 100 provided in an embodiment of the present application includes a mounting screw 10, a pressure cap 20, a locking sleeve 30, a tightening screw sleeve 40, and a first sealing member 51. The locking sleeve 30 is sleeved on the mounting screw 10, and the relative position between the locking sleeve 30 and the workpiece to be mounted is fixed. The mounting screw 10 has a first end 11 and a second end 12. The first end 11 of the mounting screw 10 is used to pass through the locking sleeve 30, the workpiece to be mounted, and the mounting carrier 220 in sequence along the direction from the locking sleeve to the workpiece to be mounted. The pressure cap 20 is connected to the first end 11 of the mounting screw 10, and the pressure cap 20 is used to abut against the mounting carrier 220. The second end 12 of the mounting screw 10 is provided with an external thread 13, and the tightening screw sleeve 40 is provided with a threaded hole 41 adapted to the external thread 13. The tightening screw sleeve 40 is threadedly connected to the second end 12 of the mounting screw 10, and the end surface of the tightening screw sleeve 40 near the pressure cap 20 abuts against the locking sleeve 30. The tightening screw sleeve 40 prevents the locking sleeve 30 from being separated from the mounting screw 10. Therefore, when the tightening screw sleeve 40 is tightened with the external thread 13 of the mounting screw 10, the workpiece to be mounted and the mounting carrier 220 are clamped between the pressure cap 20 and the locking sleeve 30. A first sealing member 51 is sleeved on the mounting screw 10 and located at the through hole of the locking sleeve 30. The first sealing member 51 is used to seal the gap between the mounting screw 10 and the hole wall of the through hole of the locking sleeve 30.

[0060] The mounting device 100 of the present application is used to mount and fix the workpiece to be mounted on the mounting carrier 220. During assembly, the mounting screw 10 passes through the locking sleeve 30, the workpiece to be mounted and the mounting carrier 220 in sequence along the direction from the locking sleeve to the workpiece to be mounted, and the locking sleeve 30 is fixedly connected to the workpiece to be mounted, and the pressure cap 20 is connected to the first end of the mounting screw 10. In this way, when the tightening sleeve 40 is tightened with the external thread 13 of the mounting screw 10, the workpiece to be mounted and the mounting carrier 220 can be clamped between the pressure cap 20 and the locking sleeve 30, that is, the workpiece to be mounted is mounted and fixed on the mounting carrier 220. Compared with the existing mounting device a100′, the mounting device 100 of the present application no longer has an avoidance gap 110, and adopts a method of passing through the locking sleeve 30, the workpiece to be mounted and the mounting carrier 220 in sequence along the direction from the locking sleeve to the workpiece to be mounted. Therefore, the through hole of the locking sleeve 30 is a circular hole that is compatible with the rod body of the mounting screw 10, so that the first sealing member 51 can be used to completely seal the gap between the mounting screw 10 and the hole wall of the through hole of the locking sleeve 30, thereby preventing the lubricating substance in the locking sleeve 30 from volatilizing and losing, and preventing external water vapor and impurities from entering the interior of the locking sleeve 30 from the gap between the mounting screw 10 and the hole wall of the through hole of the locking sleeve 30, thereby preventing problems such as wear and rust.

[0061] In some embodiments of the present application, as shown in FIG7 , the overall contour of the first sealing member 51 is circular, wherein the first sealing member 51 includes a first sealing fin 511, a second sealing fin 512, and a third sealing fin 513. One end of the second sealing fin 512 intersects and is fixedly connected to one end of the third sealing fin 513, thereby forming a "V-shaped" structure between the second sealing fin 512 and the third sealing fin 513. Furthermore, one end of the first sealing fin 511 is fixedly connected to the intersection between the second sealing fin 512 and the third sealing fin 513, thereby forming a "Y-shaped" structure between the first sealing fin 511, the second sealing fin 512, and the third sealing fin 513. It can be understood that the longitudinal section of the first sealing member 51 (the section parallel to its axial direction) is "Y-shaped". When the first seal 51 is fitted over the mounting screw 10, the first sealing fin 511 and the third sealing fin 513 abut against the shaft of the mounting screw 10, while the second sealing fin 512 abuts against the wall of the through-hole of the locking sleeve 30, thereby completely sealing the gap between the mounting screw 10 and the wall of the through-hole of the locking sleeve 30. Furthermore, the "Y-shaped" structure of the first seal 51 provides excellent sealing effectiveness for the gap between the mounting screw 10 and the wall of the through-hole of the locking sleeve 30.

[0062] In some embodiments of the present application, as shown in Figures 3 to 5, a guide pin head 14 is provided on the rod body of the mounting screw 10, and a guide groove 31 is provided on the hole wall of the through hole of the locking sleeve 30. When the first end of the mounting screw 10 passes through the locking sleeve 30 along the direction from the locking sleeve to the workpiece to be mounted, the guide pin head 14 can be slidably set in the guide groove 31. That is, when the tightening screw sleeve 40 is tightened with the external thread 13 of the mounting screw 10, the relative movement between the locking sleeve 30 and the mounting screw 10 is guided by the cooperation between the guide pin head 14 and the guide groove 31, so that the relative movement process between the locking sleeve 30 and the mounting screw 10 is stable and accurate. In addition, the first seal 51 is arranged between the guide groove 31 and the end face of the locking sleeve 30 away from the second end 12 of the mounting screw 10. Therefore, when the first end of the mounting screw 10 is passed through the through hole of the locking sleeve 30, the guide pin head 14 protruding from the rod body of the mounting screw 10 will not be interfered with. Therefore, the locking sleeve 30 of the mounting device 100 no longer needs to reserve an avoidance gap 110 to avoid the guide pin head 14, and the first seal 51 with a circular contour can easily achieve complete sealing of the gap between the rod body of the mounting screw 10 and the hole wall of the through hole of the locking sleeve 30.

[0063] In some embodiments of the present application, as shown in Figures 2 and 5, the locking sleeve 30 is provided with a limiting portion 32, which is used to cooperate with the workpiece to be mounted to limit the rotation of the locking sleeve 30 relative to the workpiece to be mounted, that is, the relative position between the locking sleeve 30 and the workpiece to be mounted is fixed. Therefore, when the tightening screw sleeve 40 is tightened with the external thread 13 of the mounting screw 10, the tightening screw sleeve 40 is screwed in by cooperating with the external thread 13 of the mounting screw 10, so that the tightening screw sleeve 40 pushes the locking sleeve 30, so that the locking sleeve 30 and the workpiece to be mounted move upward together relative to the mounting screw 10.

[0064] In some embodiments of the present application, as shown in Figures 2, 3, 5, 6, 8, and 9, the restricting portion 32 is a flange structure disposed on the end of the locking sleeve 30 away from the pressure cap 20. The flange structure is used to be fixedly connected to the workpiece to be mounted. In this embodiment, the flange structure and the workpiece to be mounted are connected and fixed by multiple bolts, thereby fixing the relative position between the locking sleeve 30 and the workpiece to be mounted.

[0065] In other embodiments of the present application, the limiting portion 32 may also include, but is not limited to, a snap-fit ​​structure, such as a limiting protrusion, and the workpiece to be mounted may be provided with a groove that matches the limiting protrusion. Thus, the limiting protrusion snaps into the groove, thereby fixing the relative position between the locking sleeve 30 and the workpiece to be mounted.

[0066] In some embodiments of the present application, as shown in Figures 2, 3, 8 to 11, the pressure cap 20 is fixedly connected to the first end 11 of the mounting screw 10, including but not limited to welding, threaded connection and fixing with a limit pin, etc. In this embodiment, before the mounting device 100 is used to mount and fix the workpiece to be mounted on the mounting carrier 220, the various components of the mounting device 100 are assembled as a set of modular accessories, that is, the mounting screw 10, the pressure cap 20, the locking sleeve 30 and the tightening nut 40 are assembled as a set, that is, the first end of the mounting screw 10 is first inserted into the through hole of the locking sleeve 30 from the end of the locking sleeve 30 provided with the limiting portion 32. After the mounting screw 10 passes through the through hole of the locking sleeve 30, the guide pin head 14 is assembled into the guide groove 31, and then the pressure cap 20 is fixed to the first end of the mounting screw 10, and the tightening nut 40 is screwed onto the external thread 13 of the mounting screw 10. The projection of the mounting screw 10 along the axis of the mounting screw 10 is located within the projection of the pressing cap 20 along the axis of the mounting screw 10. The mounting carrier 220 is provided with a through hole 221 for the pressing cap 20 to pass through.

[0067] Furthermore, the projection of the pressing cap 20 along the axis of the mounting screw 10 has a long side and a short side that are perpendicular to each other. When the long side of the pressing cap 20 is rotated relative to the hanging body 220, the pressing cap 20 can be pressed against the hanging body 220. Specifically, in some embodiments, the projection of the pressing cap 20 along the axis of the mounting screw 10 is rectangular. Accordingly, the hanging body 220 is provided with a through-hole 221, which is also a rectangular opening and can accommodate the rectangular pressing cap 20. During installation, when the mounting device 100 is used to mount and fix the workpiece to be mounted on the mounting carrier 220, the first end of the mounting screw 10, together with the pressure cap 20, passes through the mounting through hole of the workpiece to be mounted and the through hole 221 of the mounting carrier 220 in sequence, and then continues to screw the tightening screw sleeve 40, so that the locking sleeve 30 and the workpiece to be mounted move upward relative to the hanging carrier 220 (because the hanging carrier 220 is always fixed, the hanging carrier 220 serves as a movement reference for the locking sleeve 30, the mounting screw 10, and the tightening screw sleeve 40). Since the guide pin head 14 moves relatively in the guide slot 31, and the extension direction of the guide slot 31 is inclined relative to the axis of the locking sleeve 30, when the locking sleeve 30 and the workpiece to be mounted move upward relative to the hanging carrier 220, the mounting screw 10 and the pressure cap 20 rotate relative to the hanging carrier 220. The pressing cap 20 is staggered with the through-hole 221 so that the pressing cap 20 cannot be separated from the through-hole 221 (i.e., the pressing cap 20 cannot be separated from the hanging carrier 220) until the workpiece to be mounted and the hanging carrier 220 are clamped between the pressing cap 20 and the locking sleeve 30, and the workpiece to be mounted is mounted and fixed on the hanging carrier 220 by the mounting device 100. The pressing cap 20 is preferably rotated 90° relative to the hanging carrier 220, that is, the guide pin head 14 slides relatively along the guide slot 31 and rotates 90° relative to the axis of the locking sleeve 30.

[0068] In some embodiments of the present application, the pressing cap 20 and the first end 11 of the mounting screw 10 may also be detachably connected. In this embodiment, the through hole 221 formed in the mounting carrier 220 is a circular hole that matches the cross-sectional shape of the mounting screw 10 . The mounting device 100 is an assembled set of modular accessories. Before using the mounting device 100 to mount and fix the workpiece to be mounted to the hanging carrier 220, the pressure cap 20 is first removed, and then the first end of the mounting screw 10 is passed through the mounting through hole of the workpiece to be mounted and the through hole 221 of the hanging carrier 220 in sequence, and then the pressure cap 20 is connected to the first end of the mounting screw 10, so that the pressure cap 20 cannot be separated from the hanging carrier 220, and then the screw sleeve 40 is continued to be screwed and tightened, so that the locking sleeve 30 and the workpiece to be mounted move upward relative to the hanging carrier 220 until the workpiece to be mounted and the hanging carrier 220 clamp between the pressure cap 20 and the locking sleeve 30, and the workpiece to be mounted is mounted and fixed on the hanging carrier 220 through the mounting device 100.

[0069] The design structure of the mounting device 100 of the embodiment of the present application is: before the mounting device 100 is used to mount and fix the workpiece to be mounted to the mounting carrier 220, the various components of the mounting device 100 are modular accessories that have been assembled into a set, that is, the mounting screw 10, the pressure cap 20, the locking sleeve 30 and the tightening screw sleeve 40 have been assembled into a set, and the pressure cap 20 is fixedly connected to the first end 11 of the mounting screw 10, and the shape of the projection of the pressure cap 20 along the axial direction of the mounting screw 10 is a rectangle.

[0070] In some embodiments of the present application, as shown in Figures 2 to 6, the guide groove 31 extends through the outer wall of the lock sleeve 30. In this way, the guide groove 31 can be easily formed by milling, which is simple to process and has high processing efficiency. In addition, as shown in Figures 2, 4 and 5, the mounting device 100 also includes a second seal 52. The second seal 52 is embedded and sealed in the guide groove 31, thereby sealing the guide groove 31 from the outside. In this way, the lubricant in the lock sleeve 30 will not evaporate and lose to the outside through the guide groove 31, and external moisture and impurities cannot enter the lock sleeve 30 through the guide groove 31, preventing wear and rust problems. In addition, the second seal 52 is spaced apart from the guide pin head 14, thereby ensuring that the guide pin head 14 will not interfere with the second seal 52 when the guide pin head 14 slides relatively in the guide groove 31.

[0071] In other embodiments of the present application, as shown in Figures 8 and 9 , the guide groove 31 may be a groove formed in the wall of the through hole of the locking sleeve 30. That is, the guide groove 31 does not extend through the outer wall of the locking sleeve 30. In this embodiment, the guide groove 31 is formed by locally machining the wall of the through hole of the locking sleeve 30 using a broaching process. This embodiment eliminates the need for the second seal 52, reducing the number of components of the mounting device 100 and simplifying its structure.

[0072] In some embodiments of the present application, as shown in Figures 3, 5, and 9, there are two guide pin heads 14, which are symmetrically arranged relative to the axis of the mounting screw 10. Accordingly, as shown in Figures 3 to 6 and 9, there are two guide slots 31, which are arranged in a one-to-one correspondence with the two guide pin heads 14. In this way, the two symmetrical guide pin heads 14 cooperate with the corresponding two guide slots 31, so that when the guide pin heads 14 move relative to each other along the guide slots 31, the mounting screw 10 does not deflect relative to the locking sleeve 30, allowing for stable and smooth relative movement between the mounting screw 10 and the locking sleeve 30.

[0073] In some embodiments of the present application, the mounting device 100 further includes a pin member (not shown) mounted on the mounting screw 10. Specifically, the mounting screw 10 defines a socket into which the pin member is inserted. Furthermore, both ends of the pin member protrude from the mounting screw 10 to form two guide pin heads 14. Furthermore, the axis of the pin member is perpendicular to the axis of the mounting screw 10. This method of forming the two guide pin heads 14 is simple, effective, and highly efficient.

[0074] In some embodiments of the present application, the two guide pin heads 14 and the rod body of the mounting screw rod 10 can be integrally formed. Alternatively, the two guide pin heads 14 can be welded and fixed to the rod body of the mounting screw rod 10.

[0075] In some embodiments of the present application, as shown in FIG6 , the through hole of the locking sleeve 30 includes a first hole section 33 and a second hole section 34, with a first stepped surface 35 formed between the first hole section 33 and the second hole section 34. Furthermore, the guide slot 31 extends through the first stepped surface 35 at the end away from the pressure cap 20. Therefore, when the first end of the mounting screw 10 passes through the through hole of the locking sleeve 30 from the end of the locking sleeve 30 provided with the limiting portion 32, the guide pin head 14 slides directly into the guide slot 31 from the slot end opening of the guide slot 31 on the first stepped surface 35, thereby improving assembly efficiency.

[0076] In some embodiments, as shown in Figures 3 and 9, the mounting device 100 further includes a third sealing member 53, which is disposed between the end surface of the tightening nut 40 near the pressure cap 20 and the first stepped surface 35 to form a seal. Thus, the third sealing member 53 seals the tightening nut 40 and the first stepped surface 35, further sealing the interior of the locking sleeve 30. This better prevents the lubricant in the locking sleeve 30 from evaporating and losing, and better prevents external moisture and impurities from entering the locking sleeve 30, thereby preventing wear and corrosion.

[0077] In some embodiments of the present application, as shown in FIG6 , a first assembly annular groove 36 is provided on the wall of the first hole section 33 of the locking sleeve 30, and a first sealing member 51 is installed in the first assembly annular groove 36. Thus, when the locking sleeve 30 and the mounting screw 10 move relative to each other, the first sealing member 51 is confined within the first assembly annular groove 36 and does not slip along the axis of the locking sleeve 30 and escape from the first assembly annular groove 36, thereby ensuring that the first sealing member 51 seals the gap between the mounting screw 10 and the wall of the through hole of the locking sleeve 30.

[0078] In some embodiments of the present application, as shown in FIG5 , the guide slot 31 includes a first slot section 311 and a second slot section 312 that are interconnected. The first slot section 311 extends obliquely relative to the axis of the locking sleeve 30, while the second slot section 312 extends parallel to the axis of the locking sleeve 30. The end of the second slot section 312, distal from the first slot section 311, extends through the first stepped surface 35. The guide pin head 14 slides into the slot end opening of the second slot section 312 on the first stepped surface 35, resulting in efficient assembly. During the tightening process of the screw sleeve 40, the guide pin head 14 slides along the second slot section 312. This sliding distance through the second slot section 312 allows for a slight floating clearance between the workpiece to be mounted and the mounting carrier 220, thereby facilitating the mounting operation. Then, the guide pin head 14 slides into the first groove section 311 and continues to slide. In the process of the guide pin head 14 sliding along the first groove section 311, the mounting screw 10 rotates synchronously, so that the long side of the rectangular pressure cap 20 and the long side of the rectangular through-hole 221 are arranged to intersect. The pressure cap 20 cannot be separated from the hanging carrier 220 until the workpiece to be mounted and the hanging carrier 220 clamp the pressure cap 20 and the locking sleeve 30. The workpiece to be mounted is then mounted and fixed on the hanging carrier 220 through the mounting device 100.

[0079] As shown in Figures 3, 5 and 9, the mounting device 100 also includes a cover assembly 60 and a fourth seal 54. The cover assembly 60 is installed in the end of the through hole of the locking sleeve 30 away from the pressure cap 20 by a threaded connection. The tightening screw sleeve 40 is provided with a second step surface 42, and the fourth seal 54 is sleeved on the tightening screw sleeve 40 and abuts against the second step surface 42. Moreover, the side of the fourth seal 54 away from the second step surface 42 abuts against the cover assembly 60. Further, as shown in Figure 6, the hole wall of the second hole section 34 of the locking sleeve 30 is provided with a second assembly ring groove 37, and the circumferential area of ​​the fourth seal 54 is embedded in the second assembly ring groove 37, and the fourth seal 54 is squeezed and deformed by the end face of the tightening screw sleeve 40 and the second step surface 42, so that the fourth seal 54 seals the gap between the tightening screw sleeve 40 and the hole wall of the second hole section 34. In this way, the interior of the lock sleeve 30 is further sealed, thereby better preventing the lubricating substance in the lock sleeve 30 from volatilizing and losing, and better preventing external moisture and impurities from entering the interior of the lock sleeve 30 to prevent problems such as wear and corrosion.

[0080] In some embodiments of the present application, as shown in FIG5 , the cover assembly 60 includes a cover 61 and a spring 62. The cover 61 is threadedly mounted within the through hole of the locking sleeve 30 at one end thereof away from the pressure cap 20. The spring 62 is sleeved on the tightening nut 40, and the two ends of the spring 62 respectively abut against the fourth sealing member 54 and the cover 61. Thus, by screwing the cover 61, the cover 61 applies force to the spring 62, compressing the spring 62. The fourth sealing member 54 is then squeezed by the elastic force of the spring 62, thereby sealing the gap between the tightening nut 40 and the wall of the second hole section 34. This further seals the interior of the locking sleeve 30, thereby better preventing the lubricant in the locking sleeve 30 from volatilizing and losing, and better preventing external moisture and impurities from entering the locking sleeve 30 to prevent wear and corrosion.

[0081] According to another aspect of the present application, a battery kit is provided. Specifically, as shown in Figures 10 and 11, the battery kit includes a battery 300 and the aforementioned mounting device 100. The battery 300 includes a battery box 310, which is provided with a mounting through-hole. The mounting screw 10 of the mounting device 100 passes through the mounting through-hole and the mounting body 220 in sequence, along the direction from the locking sleeve to the workpiece to be mounted. Furthermore, the locking sleeve 30 is inserted into the mounting through-hole, and the flange structure of the locking sleeve 30 is connected and fixed to the bottom of the battery box 310 via multiple bolts.

[0082] The mounting device 100 of the present application is used to mount and fix the battery 300 on the hanging carrier 220. During assembly, the first end of the mounting screw 10 is connected to the pressure cap 20 and passes through the locking sleeve 30, the mounting through hole of the battery box 310 and the through hole 221 of the hanging carrier 220 in sequence along the direction from the locking sleeve to the workpiece to be mounted. In addition, the flange structure of the locking sleeve 30 is fixedly connected to the bottom of the battery box 310. In this way, when the tightening screw sleeve 40 is tightened with the external thread 13 of the mounting screw 10, the battery box 310 and the hanging carrier 220 can be clamped between the pressure cap 20 and the locking sleeve 30, that is, the battery 300 is mounted and fixed on the hanging carrier 220, which is convenient to install and has high installation efficiency. On the contrary, when the battery 300 needs to be removed, the tightening screw sleeve 40 and the external thread 13 are loosened by rotating so that the pressing cap 20 is aligned with the through hole 221 of the hanging carrier 220, and the pressing cap 20 can be separated from the hanging carrier 220, thereby removing the battery 300 from the hanging carrier 220, which is convenient for disassembly and has high disassembly efficiency.

[0083] According to another aspect of the present application, an electric vehicle 400 is provided, as shown in FIG12 . Specifically, the electric vehicle 400 includes a frame 410 and the aforementioned battery assembly, with the battery 300 mounted on the frame 410 via a mounting device 100. The battery 300 provides electrical energy to a drive motor 420, which outputs power and transmits it to wheels 430 via a transmission system, thereby driving the wheels 430 to rotate, enabling the electric vehicle to travel normally.

[0084] The mounting device 100 of the present application is used to mount and fix the battery 300 on the frame 410. During assembly, the first end of the mounting screw 10 is connected to the pressure cap 20 and passes through the locking sleeve 30, the mounting through hole of the battery box 310 and the through hole 221 of the frame 410 in sequence along the direction from the locking sleeve to the workpiece to be mounted. In addition, the flange structure of the locking sleeve 30 is fixedly connected to the bottom of the battery box 310. In this way, when the tightening screw sleeve 40 and the external thread 13 of the mounting screw 10 are tightened, the battery box 310 and the frame 410 can be clamped between the pressure cap 20 and the locking sleeve 30, that is, the battery 300 is mounted and fixed on the frame 410, which is convenient to install and has high installation efficiency. On the contrary, when the battery 300 needs to be removed, the tightening sleeve 40 and the external thread 13 are loosened by rotating so that the pressing cap 20 is aligned with the through hole 221 of the frame 410, and the pressing cap 20 can be separated from the frame 410, thereby removing the battery 300 from the frame 410, which is convenient for disassembly and has high disassembly efficiency.

[0085] The above are merely optional embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included within the scope of the claims of the present application.

Claims

1. A mounting device, wherein: include: A mounting screw having a first end and a second end, wherein the second end of the mounting screw is provided with an external thread; A locking sleeve, wherein the relative positions between the locking sleeve and the workpiece to be mounted are fixed, and the first end of the mounting screw is used to sequentially pass through the locking sleeve, the workpiece to be mounted, and the mounting carrier along the direction from the locking sleeve to the workpiece to be mounted; A pressure cap connected to the first end of the mounting screw, the pressure cap being used to abut against the mounting carrier; A tightening screw sleeve is provided with a threaded hole adapted to the external thread, the tightening screw sleeve is threadedly connected to the second end of the mounting screw, and the tightening screw sleeve prevents the locking sleeve from being separated from the mounting screw; A first sealing member is sleeved on the mounting screw and located at the through hole of the locking sleeve. The first sealing member is used to seal the gap between the mounting screw and the hole wall of the through hole of the locking sleeve.

2. The mounting device according to claim 1, wherein: The mounting screw is provided with a guide pin head, and the hole wall of the through hole of the locking sleeve is a guide groove, the guide pin head is slidably set in the guide groove, and the first seal is set between the guide groove and the end face of the second end of the locking sleeve away from the mounting screw.

3. The mounting device according to claim 2, wherein: The extending direction of the guide slot is inclined relative to the axis of the locking sleeve. The locking sleeve is provided with a limiting portion, which is used to cooperate with the workpiece to be mounted to limit the rotation of the locking sleeve relative to the workpiece to be mounted.

4. The mounting device according to claim 3, wherein: The limiting portion is a flange structure provided at one end of the locking sleeve away from the pressing cap, and the flange structure is used for being fixedly connected to the workpiece to be mounted.

5. The mounting device according to claim 3 or 4, wherein: The pressing cap is fixedly connected to the first end of the mounting screw rod; or, the pressing cap is detachably connected to the first end of the mounting screw rod.

6. The mounting device according to claim 5, wherein: The projection of the pressing cap along the axis direction of the mounting screw has a long side direction and a short side direction perpendicular to each other, wherein the pressing cap can be pressed against the hanging carrier after the long side direction of the pressing cap is rotated relative to the hanging carrier.

7. The mounting device according to any one of claims 2 to 4, wherein: The guide slot passes through the outer side wall of the locking sleeve. The mounting device further includes a second sealing member, which is embedded and sealed in the guide slot, and the second sealing member is spaced apart from the guide pin head.

8. The mounting device according to claim 7, wherein: There are two guide pin heads, and the two guide pin heads are symmetrically arranged relative to the axis of the mounting screw; there are two guide slots, and the two guide slots are arranged in a one-to-one correspondence with the two guide pin heads.

9. The mounting device according to claim 8, wherein: The mounting device also includes a pin member, which is installed on the mounting screw, and the axis of the pin member is perpendicular to the axis of the mounting screw. Both ends of the pin member protrude from the mounting screw to form two guide pin heads respectively.

10. The mounting device according to claim 7, wherein: The through hole of the locking sleeve includes a first hole section and a second hole section, a first step surface is formed between the first hole section and the second hole section, the end of the guide groove away from the pressure cap passes through to the first step surface, and the mounting device also includes a third sealing member, which is arranged between the end surface of the tightening nut close to the pressure cap and the first step surface to form a sealing setting.

11. The mounting device according to claim 10, wherein: The guide groove includes a first groove section and a second groove section that are connected to each other. The extension direction of the first groove section is inclined relative to the axis of the locking sleeve, the extension direction of the second groove section is parallel to the axis of the locking sleeve, and the end of the second groove section away from the first groove section passes through to the first step surface.

12. The mounting device according to claim 10, wherein: The mounting device also includes a cover assembly and a fourth seal. The cover assembly is installed in the end of the through hole of the locking sleeve away from the pressure cap. The tightening nut is provided with a second step surface. The fourth seal is sleeved on the tightening nut and abuts against the second step surface, and the side of the fourth seal away from the second step surface abuts against the cover assembly.

13. The mounting device according to any one of claims 1 to 4, wherein: A first assembly ring groove is provided on the hole wall of the through hole of the lock sleeve, and the first sealing member is installed in the first assembly ring groove.

14. A battery kit, wherein: It includes a battery and a mounting device as described in any one of claims 1 to 13, wherein the battery includes a battery box, the battery box is provided with a mounting through hole, and the mounting screw of the mounting device passes through the mounting through hole and the mounting carrier in sequence along the direction from the locking sleeve to the workpiece to be mounted.

15. An electric vehicle, wherein: It comprises a vehicle frame and the battery kit as claimed in claim 14, wherein the battery is mounted on the vehicle frame through the mounting device.

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