Hot riveting structure for lead screw nut and electric vehicle door

Abstract

The utility model relates to the technical field of electric vehicles, in particular to a hot riveting structure for a lead screw nut and an electric vehicle door. The actuator (1) comprises a lead screw nut (2); a glue melting block (202) is arranged on the lead screw nut (2); when the device is used for hot riveting operation, the glue melting block is molten through the high-temperature hot riveting head, so that a large amount of molten liquid plastic is provided to seal the top of the mounting hole, and the structural stability of the glue sealing layer can be ensured when the pin shaft is impacted.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicles, in particular to a hot riveting structure for a screw nut and an electric vehicle door. Background Art

[0002] As demands for greater convenience and comfort in vehicles continue to rise, the electrification of vehicle body components is becoming increasingly common, such as power doors, power mirrors, power spoilers, and power fuel tank caps. These electric "accessories" rely on motors to drive actuators, which then perform specific tasks. For example, as power doors transition from purely mechanical products to mechatronics, they require a more robust structure and reliable connections with surrounding components to ensure normal and reliable operation.

[0003] The current electric door actuator includes a connecting rod and a lead screw nut; a mounting hole is provided on the lead screw nut, and a pin shaft is installed in the mounting hole, and the pin shaft fixes the end of the connecting rod to the lead screw nut; the top of the mounting hole needs to be heat-sealed by a hot rivet head; the existing straight hole structure mounting hole is prone to glue overflowing from the edge of the hole during hot riveting, and the overflowing glue will interfere with the inner wall of the shell, thereby causing the lead screw nut to move unsmoothly or even get stuck in the shell. At the same time, since this structure has a small amount of sealing glue during hot riveting, the pin shaft will break the sealing glue and slide out when subjected to a large force. After sliding out, the pin shaft will scrape against the inner wall of the shell, thereby causing the lead screw nut to move unsmoothly or even get stuck in the shell.

[0004] After searching, the applicant found that the Chinese patent document with publication number 217538326U disclosed an electric switch device for a motor vehicle door on October 4, 2022, including: a power device, which generates and outputs a first power; a transmission device, which receives the first power output by the power device and outputs a second power; an actuator, which receives the second power output by the transmission device and performs a pushing operation; and a shell, which is fixedly connected to the vehicle door, and the shell at least holds the power device and the transmission device; wherein the first end of the actuator is connected to the vehicle body, and the second end of the actuator is connected to the transmission device, so that based on the pushing operation of the actuator, the vehicle door can be automatically opened or closed relative to the vehicle body; this device also cannot solve the above technical problems.

[0005] Therefore, in order to improve or solve at least one of the above problems, it is necessary to optimize the hot riveting structure of the existing electric door. Utility Model Content

[0006] The utility model aims to provide a hot riveting structure for a screw nut and an electric door, which can avoid insufficient hot riveting strength caused by insufficient sealing glue amount of the screw nut for an electric door.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: a hot riveting structure for a screw nut, including an actuator; the actuator includes a screw nut; and a melt block is provided on the screw nut.

[0008] The screw nut includes a mounting hole; the melt block is arranged on the top of the screw nut and along the edge of the mounting hole.

[0009] A melt glue groove is provided on the top surface of the screw nut; the melt glue groove is arranged along the edge of the mounting hole; and the melt glue block is arranged in the melt glue groove.

[0010] A connecting rod hole is provided in the screw nut; a connecting rod is provided in the connecting rod hole; a pin hole is provided at the end of the connecting rod; a pin shaft is provided in the pin hole; and the pin shaft is arranged in the mounting hole.

[0011] The connecting rod hole and the mounting hole are arranged crosswise; and a hot rivet head is provided on the top of the melt block.

[0012] An electric door comprises the hot riveting structure for the screw nut and a vehicle body; the vehicle body is connected to the vehicle door; and the actuator is connected to the vehicle door.

[0013] A bracket is provided on the vehicle body; one end of the connecting rod is connected to the screw nut, and the other end of the connecting rod is connected to the bracket; an axial hole is provided at the end of the connecting rod; a rotating shaft is provided on the bracket; and the rotating shaft is sleeved in the axial hole.

[0014] The actuator includes a housing; a motor and a screw are respectively provided in the housing; the output end of the motor is connected to a first gear; the end of the screw is connected to a second gear; the first gear is meshed with the second gear; a thread groove is provided on the screw nut; and the screw is sleeved in the thread groove.

[0015] An upper hinge and a lower hinge are respectively provided on the vehicle body; the upper hinge and the lower hinge are respectively connected to the vehicle door.

[0016] A mounting plate is provided on the vehicle door; the actuator is connected to the mounting plate.

[0017] The beneficial effects of this application are:

[0018] 1. The present application provides a circle of melt block at the top of the mounting hole of the screw nut; the screw nut and the melt block are both made of plastic and are integrally formed by injection molding; in the prior art, a hot rivet head is used to directly melt the plastic near the top of the mounting hole of the screw nut for sealing the mounting hole, and the heated plastic is used as glue, which is cooled and reshaped to seal the top of the mounting hole, but the amount of sealing glue in the original structure is small, and the structure of the closed part of the mounting hole is unstable; when the present device is performing a hot riveting operation, the high-temperature hot rivet head is used to melt the protruding melt block, thereby providing a large amount of melted liquid plastic to seal the top of the mounting hole. After the melted plastic cools and solidifies, it is recombined with the screw nut to ensure the structural strength of the sealing layer when the pin shaft is impacted.

[0019] 2. The present application provides a melt glue groove with a diameter larger than the mounting hole at the top of the screw nut. When the melt glue block melts, it will enter the mounting hole, and the excess glue will enter the melt glue groove, which can effectively prevent the sealing glue from overflowing and effectively prevent the excess plastic from interfering with the inner wall of the shell after cooling, thereby causing the screw nut to move unsmoothly or even get stuck in the shell.

[0020] 3. After the actuator of the present application is powered on, the motor is controlled to rotate forward and reverse. The motor drives the screw to rotate through the first gear, and the screw drives the screw nut to reciprocate. The screw nut pushes the connecting rod to extend and retract, and then pushes the car door to rotate around the upper hinge and the lower hinge to realize the opening or closing of the car door. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0022] Figure 1 This is a schematic diagram of the hot riveting structure for the screw nut and the state of the screw nut of the electric door before hot riveting.

[0023] Figure 2 This is a schematic diagram of the hot riveting structure for the screw nut and the state of the screw nut of the electric door after hot riveting.

[0024] Figure 3 This is a schematic diagram of the hot riveting structure for the screw nut and the door structure of the electric door.

[0025] Figure 4 for Figure 3 The hot riveting structure of the screw nut and the partial enlarged view of point A of the electric door are shown.

[0026] Figure 5 This is a schematic diagram of the hot riveting structure for the screw nut and the installation status of the actuator for the electric door.

[0027] Figure 6 for Figure 5 The hot riveting structure of the screw nut shown is a partial enlarged view of point B of the electric door.

[0028] The marks in the above figure are:

[0029] The following are marked in the figure:

[0030] 1. Actuator, 101. Housing, 102. Motor, 103. Screw,

[0031] 2. Screw nut, 201. Mounting hole, 202. Melt block, 203. Melt groove, 204. Connecting rod hole, 3. Connecting rod, 301. Pin hole, 302. Pin shaft,

[0032] 4. Hot riveting head,

[0033] 5. Car body, 501. Bracket, 502. Rotating axis,

[0034] 6. Car door, 601. Upper hinge, 602. Lower hinge, 603. Mounting plate,

[0035] 7. First gear, 701. Second gear, 702. Thread groove. DETAILED DESCRIPTION

[0036] The following is a further detailed description of the specific implementation methods of the present invention by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention and to facilitate its implementation.

[0037] Figure 1 The hot riveting structure for the lead screw nut shown includes an actuator 1 ; the actuator 1 includes a lead screw nut 2 ; and a melt block 202 is provided on the lead screw nut 2 .

[0038] The actuator 1 is fixedly connected to the vehicle door 6; the melt block 202 is fixedly connected to the top of the screw nut 2; the screw nut 2 and the melt block 202 are both made of plastic and are integrally formed by injection molding; when the device is performing a hot riveting operation, the high-temperature hot rivet head 4 melts the melt block 202, thereby providing a large amount of melted liquid plastic to seal the top of the mounting hole, which can ensure the structural strength of the sealing layer when the pin shaft 302 is impacted.

[0039] The screw nut 2 includes a mounting hole 201 ; the melt block 202 is arranged on the top of the screw nut 2 and along the edge of the mounting hole 201 .

[0040] The mounting hole 201 is a circular hole; the melt block 202 is a circular ring structure arranged along the edge of the mounting hole 201; when the melt block 202 is melted, it can seal the mounting hole 201 with a sufficient amount of glue, which can make the structural strength of the sealing layer high and effectively prevent the pin shaft 302 from sliding out after breaking through the sealing layer.

[0041] A glue melting groove 203 is provided on the top surface of the screw nut 2 ; the glue melting groove 203 is arranged along the edge of the mounting hole 201 ; and the glue melting block 202 is arranged in the glue melting groove 203 .

[0042] The glue molten groove 203 is a circular groove provided on the top surface of the screw nut 2; when the glue molten block 202 melts, it will enter the mounting hole 201, and at the same time, the excess glue will enter the glue molten groove 203, which can effectively prevent the sealing glue from overflowing, and effectively prevent the glue from interfering with the inner wall of the shell 101 after cooling, and prevent the screw nut 2 from moving smoothly or even getting stuck in the shell 101.

[0043] A connecting rod hole 204 is provided in the screw nut 2 ; a connecting rod 3 is provided in the connecting rod hole 204 ; a pin hole 301 is provided at the end of the connecting rod 3 ; a pin shaft 302 is provided in the pin hole 301 ; and the pin shaft 302 is provided in the mounting hole 201 .

[0044] The connecting rod 3 is sleeved in the connecting rod hole 204, and the pin shaft 302 is inserted into the mounting hole 201 and passes through the pin hole 301 to fix the pin shaft 302 in the connecting rod hole 204; there is a slight interference fit between the pin shaft 302 and the mounting hole 201; the pin shaft 302 is machined from metal.

[0045] The connecting rod hole 204 is arranged crosswise with the mounting hole 201 ; a hot riveting head 4 is provided on the top of the melt block 202 .

[0046] The pin hole 301 is vertically arranged on the screw nut 2; the mounting hole 201 is horizontally arranged on the screw nut 2; the pin hole 301 is connected to the middle part of the mounting hole 201, which can realize the installation and fixing operation of the connecting rod 3; the hot rivet head 4 has a high temperature, which can melt the melt block 202 to seal the mounting hole 201.

[0047] An electric door comprises a hot riveting structure for a screw nut and a body 5; the body 5 is connected to a door 6; and an actuator 1 is connected to the door 6.

[0048] The vehicle door 6 is movably connected to the vehicle body 5 ; the actuator 1 is fixedly connected to the vehicle door 6 and movably connected to the vehicle body 5 .

[0049] A bracket 501 is provided on the vehicle body 5; one end of the connecting rod 3 is connected to the screw nut 2, and the other end of the connecting rod 3 is connected to the bracket 501; an axis hole is provided at the end of the connecting rod 3; a rotating shaft 502 is provided on the bracket 501; and the rotating shaft 502 is sleeved in the axis hole.

[0050] The bracket 501 is a U-shaped structure and is fixedly connected to the vehicle body 5; the end of the connecting rod 3 away from the screw nut 2 is connected to the bracket 501 through the rotating shaft 502; the connecting rod 3 can rotate on the rotating shaft 502 through the shaft hole; the connecting rod 3 can push out or pull back the vehicle door 6 by extending and retracting operations, thereby realizing the opening and closing operation of the vehicle door 6.

[0051] The actuator 1 includes a housing 101; a motor 102 and a screw rod 103 are respectively provided in the housing 101; the output end of the motor 102 is connected to the first gear 7; the end of the screw rod 103 is connected to the second gear 701; the first gear 7 is meshed with the second gear 701; a thread groove 702 is provided on the screw nut 2; the screw rod 103 is sleeved in the thread groove 702.

[0052] After the actuator 1 is powered on, the software controls the output shaft of the motor 102 to rotate forward and reverse; the second gear 701 is driven to rotate through the first gear 7, thereby driving the screw rod 103 to rotate, and the screw rod 103 drives the screw nut 2 to reciprocate, and the screw nut 2 pushes the connecting rod 3 to extend and retract, thereby pushing the car door 6 to rotate around the upper hinge 601 and the lower hinge 602 to realize the opening or closing of the car door 6; an internal thread is provided in the thread groove 702, and an external thread matching the internal thread is provided on the screw rod 103. At the same time, the inner walls on both sides of the shell 101 radially limit the screw nut 2, so that the screw nut 2 can move axially along the screw rod 103.

[0053] An upper hinge 601 and a lower hinge 602 are respectively provided on the vehicle body 5 ; the upper hinge 601 and the lower hinge 602 are respectively connected to the vehicle door 6 .

[0054] The upper hinge 601 and the lower hinge 602 enable the vehicle door 6 to flexibly rotate relative to the vehicle body 5 for opening and closing operations.

[0055] A mounting plate 603 is provided on the vehicle door 6 ; the actuator 1 is connected to the mounting plate 603 .

[0056] The mounting plate 603 is fixedly connected to the vehicle door 6 , thereby fixing the actuator 1 and providing stable support for the actuator 1 .

[0057] The specific workflow of this utility model is as follows:

[0058] When performing the hot riveting operation, the hot riveting head 4 at high temperature melts the glue block 202, thereby providing a large amount of melted liquid plastic to seal the top of the mounting hole 201, thereby ensuring the structural stability of the sealing layer when the pin shaft 302 impacts.

[0059] When the glue block 202 melts, it will enter the mounting hole 201, and the excess glue will enter the glue groove 203, which can effectively prevent the sealing glue from overflowing, effectively prevent the glue from interfering with the inner wall of the shell 101 after cooling, and prevent the screw nut 2 from moving smoothly or even getting stuck in the shell 101.

[0060] After the actuator 1 is powered on, the software controls the output shaft of the motor 102 to rotate forward and reverse; the first gear 7 drives the second gear 701 to rotate, thereby driving the screw rod 103 to rotate, and the screw rod 103 drives the screw nut 2 to reciprocate, and the screw nut 2 pushes the connecting rod 3 to extend and retract, thereby pushing the car door 6 to rotate around the upper hinge 601 and the lower hinge 602 to realize the opening or closing of the car door 6.

[0061] The above description of the present invention is provided as an example, in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described method. Any non-substantial improvements made using the method concepts and technical solutions of the present invention, or any application of the above-described concepts and technical solutions of the present invention to other situations without modification, are all within the scope of protection of the present invention.

Claims

1. A hot riveting structure for a screw nut, characterized by: The invention comprises an actuator (1); the actuator (1) comprises a screw nut (2); and a melt block (202) is provided on the screw nut (2).

2. A hot riveting structure for a screw nut according to claim 1, characterized in that: The screw nut (2) comprises a mounting hole (201); the melt block (202) is arranged on the top of the screw nut (2) and along the edge of the mounting hole (201).

3. A hot riveting structure for a screw nut according to claim 2, characterized in that: A melt glue groove (203) is provided on the top surface of the screw nut (2); the melt glue groove (203) is arranged along the edge of the mounting hole (201); and the melt glue block (202) is arranged in the melt glue groove (203).

4. A hot riveting structure for a screw nut according to any one of claims 2 to 3, characterized in that: A connecting rod hole (204) is provided in the screw nut (2); a connecting rod (3) is provided in the connecting rod hole (204); a pin hole (301) is provided at the end of the connecting rod (3); a pin shaft (302) is provided in the pin hole (301); and the pin shaft (302) is provided in the mounting hole (201).

5. A hot riveting structure for a screw nut according to claim 4, characterized in that: The connecting rod hole (204) and the mounting hole (201) are arranged crosswise; and a hot rivet head (4) is provided on the top of the melt block (202).

6. An electric door, comprising the hot riveting structure for a screw nut according to any one of claims 1 to 5, characterized in that: It also includes a vehicle body (5); the vehicle body (5) is connected to a vehicle door (6); and the actuator (1) is connected to the vehicle door (6).

7. An electric door according to claim 6, characterized in that: A bracket (501) is provided on the vehicle body (5); one end of a connecting rod (3) is connected to the screw nut (2), and the other end of the connecting rod (3) is connected to the bracket (501); an axial hole is provided at the end of the connecting rod (3); a rotating shaft (502) is provided on the bracket (501); and the rotating shaft (502) is sleeved in the axial hole.

8. An electric door according to any one of claims 6-7, characterized in that: The actuator (1) comprises a housing (101); a motor (102) and a screw rod (103) are respectively provided in the housing (101); the output end of the motor (102) is connected to a first gear (7); the end of the screw rod (103) is connected to a second gear (701); the first gear (7) is meshed with the second gear (701); a thread groove (702) is provided on the screw rod nut (2); and the screw rod (103) is sleeved in the thread groove (702).

9. An electric door according to claim 8, characterized in that: The vehicle body (5) is provided with an upper hinge (601) and a lower hinge (602), respectively; the upper hinge (601) and the lower hinge (602) are respectively connected to the vehicle door (6).

10. An electric door according to claim 9, characterized in that: A mounting plate (603) is provided on the vehicle door (6); the actuator (1) is connected to the mounting plate (603).

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