Car seat actuator with cushioning and clutch functions

Abstract

The present invention discloses a car seat driver with cushioning, shock absorption and clutch functions, comprising a housing, a first transmission component, a second transmission component, and a third transmission component rotatably arranged inside the housing, the first transmission component and the second transmission component being in contact with each other for transmission, the third transmission component being movably arranged in the inner hole of the second transmission component, the third transmission component including a threaded through hole, the outer side of the housing being provided with a first connecting hole and a second connecting hole, one end of the third transmission component being provided with a first tooth portion, one end of the second transmission component being provided with a second tooth portion, an elastic component being provided between the second flange and the other end of the second transmission component, the housing being made of a plastic material, the driver including a metal bracket, the metal bracket including a first mounting hole and a second mounting hole. The car seat driver with cushioning, shock absorption and clutch functions of the present invention is not only low in cost and easy to install, but also has cushioning, shock absorption and clutch functions.

Description

Technical Field

[0001] The invention relates to a car seat driver with buffering, shock absorption and clutch functions. Background Art

[0002] The car seat drive is a common mechanism in cars used to adjust the seat position. It is set between the seat and the bottom of the car body, and is used to establish a transmission connection between the seat and the guide rails at the bottom of the car body. When working, the motor can drive the seat to move along the guide rail direction, thereby achieving the purpose of adjusting the seat position.

[0003] Existing actuator housings are typically die-cast from metal, resulting in heavy weight and high production costs. This can easily cause the connection between the actuator and the guide rail to fail during vehicle braking or collisions. To improve the cushioning and shock absorption between the actuator and the guide rail, cushioning materials such as rubber pads are often placed between the actuator and the guide rail during installation. Furthermore, to prevent the actuator from continuing to operate after reaching the end point of the guide rail, potentially damaging the motor and actuator, sensors are typically installed at each end of the guide rail to sense the actuator's position. These sensors are used to control the motor to stop when the actuator reaches the end point of the guide rail, preventing overload. However, even if the sensors become displaced or damaged in a collision, this situation can still occur during seat adjustment. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a car seat driver which is low in cost, easy to install, and has buffering, shock absorption and clutch functions.

[0005] To achieve the above objectives, the present invention provides a vehicle seat actuator with cushioning, shock absorption, and clutch functions, comprising a housing, a first transmission component, a second transmission component, and a third transmission component rotatably disposed within the housing, the first transmission component and the second transmission component being in contact with each other, the axes of the first transmission component and the second transmission component being non-parallel, the second transmission component comprising an inner hole, the third transmission component being movably disposed within the inner hole of the second transmission component and being capable of axial sliding and rotation relative to the second transmission component, the third transmission component comprising a threaded through hole, the outer side of the housing comprising a first connecting hole corresponding to an end of the first transmission component, and second connecting holes corresponding to both ends of the threaded through hole of the third transmission component, the third transmission component comprising a first tooth portion at one end, the second transmission component comprising a second tooth portion axially meshed with the first tooth portion at one end, an elastic component being disposed between the other end of the third transmission component and the other end of the second transmission component, the elastic component being configured to drive the first tooth portion to press and engage with the second tooth portion, the housing being made of a plastic material, and the actuator comprising a metal bracket embedded and fixed within the housing, the metal bracket comprising a first mounting hole corresponding to the first mounting hole, and a second mounting hole corresponding to the second mounting hole.

[0006] Furthermore, the metal bracket is formed by stamping of metal material.

[0007] Furthermore, the metal bracket is formed by laterally splicing a first metal bracket and a second metal bracket, and the first metal bracket and the second metal bracket are correspondingly provided with the first mounting hole, and the first metal bracket and the second metal bracket both include two semicircular grooves, and the semicircular groove of the first metal bracket and the semicircular groove of the second metal bracket are laterally spliced ​​into the second mounting hole.

[0008] Furthermore, the shell is formed by laterally splicing a first side shell and a second side shell, and the first side shell and the second side shell are correspondingly provided with the first connecting hole. The first connecting hole of the first side shell and the first connecting hole of the second side shell extend toward the inner side of the shell to form a cylindrical sleeve portion, and the sleeve portion is used to cooperate with the first mounting hole of the metal bracket. The first transmission component includes an engaging portion and connecting portions located at both ends of the engaging portion. The connecting portions at both ends of the first transmission component are rotatably inserted into the first connecting hole.

[0009] Furthermore, the end of the sleeve portion is connected to a limiting portion, and the limiting portion is used to cooperate with the metal bracket to engage and limit.

[0010] Furthermore, a washer and a sleeve are respectively provided between the second mounting hole and the end of the second transmission component.

[0011] Furthermore, the second transmission component includes an engaging portion and connecting portions located at both ends of the engaging portion, the washer is sleeved on the connecting portion of the second transmission component, the washer has a first limiting protrusion that forms a circumferential limiting fit with the engaging portion, the sleeve includes a cylindrical plug-in portion and a third annular flange located at one end of the plug-in portion, the plug-in portion is plugged in with the second mounting hole, the third annular flange is limited by the metal bracket, and the sleeve also includes a second limiting protrusion that forms a circumferential limiting fit with the metal bracket or the shell.

[0012] Furthermore, a plurality of grooves arranged in a honeycomb shape are provided on the outer side of the shell.

[0013] Furthermore, one end of the third transmission component includes an annular first flange, the first tooth portion is arranged on the first flange, and the other end of the third transmission component includes an annular second flange. The elastic component is a spring sleeved on the other end of the third transmission component, and the spring respectively cooperates and abuts with the second flange and the other end of the second transmission component. The other end of the third transmission component is also sleeved with a gasket, which is located between the spring and the other end of the second transmission component.

[0014] The beneficial effects of the present invention are as follows: by combining the plastic housing and the metal bracket, it is possible to ensure that the transmission connection structure of the driver has reliable strength while reducing costs and weight; the housing made of plastic material, when installed in conjunction with the guide rail, utilizes the characteristics of the plastic material to enable the housing itself to have certain elastic buffering properties; in addition, due to the provision of the elastic component, the elastic buffering effect between the driver and the guide rail can be further improved. When the driver runs to the end position of the guide rail, even if the motor is still running, the first tooth portion and the second tooth portion can be used to cooperate to drive the third transmission component to move axially relative to the second transmission component, causing slippage between the first tooth portion and the second tooth portion, thereby preventing the motor from overloading and avoiding damage to the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a structural diagram of an embodiment of the present invention;

[0016] Figure 2 An exploded view of an embodiment of the present invention;

[0017] Figure 3 A cross-sectional view of an embodiment of the present invention Figure 1 ;

[0018] Figure 4 A cross-sectional view of an embodiment of the present invention Figure 2 ;

[0019] Figure 5 This is a schematic structural diagram of a shaft sleeve according to an embodiment of the present invention;

[0020] Figure 6 This is a structural diagram of a gasket according to an embodiment of the present invention;

[0021] Figure 7 Schematic diagram of the assembly of the second transmission component and the third transmission component according to an embodiment of the present invention;

[0022] Figure 8 This is a shell structure of another embodiment of the present invention. DETAILED DESCRIPTION

[0023] The embodiment of the automobile seat driver with cushioning, shock absorption and clutch functions of the present invention is as follows: Figure 1-7 As shown, it includes a shell 1, a first transmission component 2, a second transmission component 3, and a third transmission component 6 rotatably arranged on the inner side of the shell 1, the first transmission component 2 and the second transmission component 3 are in contact with each other for transmission, the axes of the first transmission component 2 and the second transmission component 3 are not parallel to each other, preferably 90 degrees to each other, the second transmission component 3 includes an inner hole 31, the third transmission component 6 is movably arranged in the inner hole 31 of the second transmission component 3, and can slide and rotate axially relative to the second transmission component 3, the third transmission component 6 includes a threaded through hole 61, and the outer side of the shell 1 is provided with a first connecting hole 11 corresponding to the end of the first transmission component 2 and a second connecting hole 12 corresponding to the two ends of the threaded through hole 61 of the third transmission component 6. The shell 1 is made of plastic material and can be formed by injection molding. The driver includes a metal bracket 4 embedded and fixed on the inner side of the shell 1, and the metal bracket 4 includes a second connecting hole 12 arranged corresponding to the first connecting hole 11. A mounting hole 41 and a second mounting hole corresponding to the second connecting hole 12 are provided. The metal bracket 4 is stamped and formed from a metal material. A first tooth portion 62 is provided at one end of the third transmission component 6. A second tooth portion 34 is provided at one end of the second transmission component 3 to axially engage with the first tooth portion 62. An elastic component 7 is provided between the other end of the third transmission component 6 and the other end of the second transmission component 3. The elastic component 7 is used to drive the first tooth portion 62 to axially press and engage with the second tooth portion 34. The compression of the elastic component 7 ensures that the second transmission component 3 and the third transmission component 6 can be transmitted and matched under normal working conditions. When the load reaches a certain level, such as when the driver moves to the end position of the guide rail, slippage occurs between the first tooth portion 62 and the second tooth portion 34, causing the third transmission component 6 to generate axial movement and circumferential rotation relative to the second transmission component 3, thereby causing the motor to idle and avoid damage to the motor. When the load is restored, the elastic component 7 drives the third transmission component 6 back to its original position, so that the second transmission component 3 and the third transmission component 6 are re-linked. The first tooth portion 62 and the second tooth portion 34 are preferably arc-shaped tooth structures, which can improve the slip effect between the teeth.

[0024] In addition, through the above structure, the screws of the driver and the guide rail also have a buffering and shock-absorbing effect. When the vehicle collides or brakes, the third transmission component 6 slides toward its other end under the action of inertia, and the elastic component 7 can produce a buffering and shock-absorbing effect. At the same time, it can also separate the first tooth portion 62 and the second tooth portion 34, so that the transmission of the second transmission component 3 and the third transmission component 6 is disconnected, which can avoid damage to the contact transmission points between the three transmission components and improve the reliability of the product.

[0025] One end of the third transmission component 6 includes an annular first flange 63, and the first tooth portion 62 is arranged on the side of the first flange 63 facing the other end of the third transmission component 6. The other end of the third transmission component 6 includes an annular second flange 64. The elastic component 7 is a spring sleeved on the other end of the third transmission component 6, and the spring is respectively engaged with the second flange 64 and the other end of the second transmission component 3. The other end of the third transmission component 6 is also sleeved with a gasket 65, which is located between the spring and the other end of the second transmission component 3.

[0026] The second flange 64 is threadedly fixed to the main body of the transmission component 6, facilitating the spring and the sleeved installation between the second and third transmission components 3 and 6. The presence of a gasket 65 reduces wear between the spring and the second transmission component 3, thereby increasing the product's service life. The restraining engagement between the first flange 63, the second flange 64, and the ends of the second transmission component 3 prevents the third transmission component 6 from falling out of the second transmission component 3.

[0027] The output end of the power supply motor through the first connecting hole 11 and the first mounting hole 41 is passed through the inside of the shell and can be connected to the first transmission component 2 for transmission. The first connecting hole 11 and the first mounting hole 41 can also be used for the rotational connection between the first transmission component 2 and the shell. The second connecting hole 12 and the second mounting hole are used for the screw of the guide rail to pass through the inside of the shell and can be connected with the threaded through hole 61 of the third transmission component 6. Of course, the second connecting hole 12 can also be used for the rotational connection between the second transmission component 3 and the shell.

[0028] The metal bracket 4 can provide a reliable load-bearing effect for the transmission of the first transmission component 2 and the second transmission component 3. The plastic housing 1 can reduce the overall weight of the driver and reduce material costs. In addition, it can also play a certain shock absorption and buffering effect when installed in conjunction with the guide rail.

[0029] The metal bracket 4 is formed by laterally splicing the first metal bracket 401 and the second metal bracket 402. The first metal bracket 401 and the second metal bracket 402 are correspondingly provided with the first mounting hole 41. The first metal bracket 401 and the second metal bracket 402 both include two semicircular grooves 42. The semicircular groove 42 of the first metal bracket 401 and the semicircular groove 42 of the second metal bracket 402 are laterally spliced ​​into the second mounting hole. The inner hole of the second mounting hole can be a closed structure or an open structure.

[0030] The shell 1 is formed by laterally splicing a first side shell 101 and a second side shell 102. The first side shell 101 and the second side shell 102 are correspondingly provided with the first connecting hole 11. The first connecting hole 11 of the first side shell 101 and the first connecting hole 11 of the second side shell 102 extend toward the inner side of the shell 1 to form a cylindrical sleeve portion 13. The end of the sleeve portion 13 has a limiting portion 14. The sleeve portion 13 is used to cooperate with the first mounting hole 41 of the metal bracket 4 for sleeve engagement. The limiting portion 14 is used to cooperate with the metal bracket 4 for clamping and limiting, which can improve the positioning and installation effect between the side shell and the metal bracket, and improve the reliability and stability of the structure.

[0031] The first transmission component 2 includes a meshing portion 21, connecting portions 22 at both ends of the meshing portion 21, and positioning holes 23 formed at the ends. The connecting portions 22 at both ends of the first transmission component 2 are rotatably inserted into the first connecting holes 11. The second transmission component 3 includes a meshing portion 32 and connecting portions 33 at both ends of the meshing portion 32. The meshing portion 21 of the first transmission component 2 is a worm gear, and the meshing portion 32 of the second transmission component 3 is a helical gear.

[0032] A washer 51 and a sleeve 52 are respectively provided between the second mounting hole and the end of the second transmission component 3. The arrangement of the washer 51 and the sleeve 52 can reduce the friction during the rotation of the second transmission component 3, thereby improving the service life of the product and the smoothness of the transmission.

[0033] The washer 51 is sleeved on the connecting portion 33 of the second transmission component. The washer 51 has a first limiting protrusion 511 that forms a circumferential limiting fit with the meshing portion 32 of the second transmission component. The first limiting protrusion 511 can be inserted into the tooth gap between the meshing portion 32 of the second transmission component, thereby limiting the relative rotation of the two and reducing the contact wear between the two. The shaft sleeve 52 includes a cylindrical plug-in portion 521 and a third annular flange 522 located at one end of the plug-in portion 521. The plug-in portion 521 is plugged into the second mounting hole, and the third annular flange 522 is limited by the metal bracket 4. The shaft sleeve 52 also includes a second limiting protrusion 523 that forms a circumferential limiting fit with the metal bracket or the shell. The second limiting protrusion 523 is embedded between the two semicircular grooves 42, and can also be embedded in the shell groove, thereby prohibiting the shaft sleeve 52 from rotating, thereby improving the stability and reliability of the second transmission component during rotation.

[0034] In other embodiments, Figure 8 As shown, a plurality of grooves 15 arranged in a honeycomb shape are provided on the outer side of the shell. The provision of the grooves 15 can reduce the weight of the shell, reduce the cost, and ensure that the shell has sufficient strength.

[0035] The above embodiment is only one preferred embodiment of the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are all included in the protection scope of the present invention.

Claims

1. A car seat actuator with cushioning, shock absorption and clutch functions, characterized by: The transmission gear of the present invention is a gear shift knob, and a gear shift knob is provided on the outer side of the transmission gear, and a gear shift knob is provided on the outer side of the transmission gear. The gear shift knob is a gear shift knob, and a gear shift knob is provided on the outer side of the transmission gear. The gear shift knob is a gear shift knob, and a gear shift knob is provided on the outer side of the transmission gear. The gear shift knob is a gear shift knob, and a gear shift knob is provided on the outer side of the transmission gear. The gear shift knob is a gear shift knob, and a gear shift knob is provided on the outer side of the transmission gear. The gear shift knob is a gear shift knob, and a gear shift knob is provided on the outer side of the transmission gear. The cam is provided with a first end portion for pressing and engaging the first tooth portion against the second tooth portion, and the housing is made of a plastic material. The driver includes a metal bracket embedded and fixed on the inner side of the housing, and the metal bracket includes a first mounting hole corresponding to the first connecting hole and a second mounting hole corresponding to the second connecting hole. One end of the third transmission component includes an annular first flange, and the first tooth portion is provided on the first flange. The other end of the third transmission component includes an annular second flange. The elastic component is a spring sleeved on the other end of the third transmission component, and the spring respectively cooperates with the second flange and the other end of the second transmission component. The other end of the third transmission component is also sleeved with a gasket, which is located between the spring and the other end of the second transmission component.

2. The car seat driver with cushioning, shock absorption and clutch functions according to claim 1, characterized in that: The metal bracket is formed by stamping a metal material.

3. The car seat driver with cushioning, shock absorption and clutch functions according to claim 1, characterized in that: The metal bracket is formed by laterally splicing a first metal bracket and a second metal bracket. The first metal bracket and the second metal bracket are correspondingly provided with the first mounting hole. The first metal bracket and the second metal bracket each include two semicircular grooves. The semicircular groove of the first metal bracket and the semicircular groove of the second metal bracket are laterally spliced ​​to form the second mounting hole.

4. The car seat driver with cushioning, shock absorption and clutch functions according to claim 1, characterized in that: The shell is formed by laterally splicing a first side shell and a second side shell. The first side shell and the second side shell are correspondingly provided with the first connecting hole. The first connecting hole of the first side shell and the first connecting hole of the second side shell extend toward the inner side of the shell to form a cylindrical sleeve portion. The sleeve portion is used to cooperate with the first mounting hole of the metal bracket. The first transmission component includes an engaging portion and connecting portions located at both ends of the engaging portion. The connecting portions at both ends of the first transmission component are rotatably inserted into the first connecting hole.

5. The car seat driver with cushioning, shock absorption and clutch functions according to claim 4, characterized in that: The end of the sleeve portion is connected to a limiting portion, and the limiting portion is used to cooperate with the metal bracket for clamping and limiting.

6. The car seat driver with cushioning, shock absorption and clutch functions according to claim 1, characterized in that: A washer and a shaft sleeve are respectively provided between the second mounting hole and the end of the second transmission component.

7. The car seat driver with cushioning, shock absorption and clutch functions according to claim 6, characterized in that: The second transmission component includes an engaging portion and connecting portions located at both ends of the engaging portion. The washer is sleeved on the connecting portion of the second transmission component. The washer has a first limiting protrusion that forms a circumferential limiting fit with the engaging portion. The sleeve includes a cylindrical plug-in portion and a third annular flange located at one end of the plug-in portion. The plug-in portion is plugged in with the second mounting hole, and the third annular flange is limited by the metal bracket. The sleeve also includes a second limiting protrusion that forms a circumferential limiting fit with the metal bracket or the shell.

8. The car seat driver with cushioning, shock absorption and clutch functions according to claim 1, characterized in that: A plurality of grooves arranged in a honeycomb shape are arranged on the outer side of the shell.

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