Linear motor with variable-angle supporting and buffering device

Abstract

The utility model discloses a linear motor with a variable-angle supporting and buffering device, which comprises a linear motor, the linear motor comprises a motor, a reduction gearbox and a screw rod, the motor linearly moves through the reduction gearbox and the screw rod, the linear motor further comprises a variable-angle supporting component and a buffering mechanism, the variable-angle supporting component is arranged on an adjusting target, and the buffering mechanism is arranged on the adjusting target. The reduction gearbox is installed on the angle-variable supporting component and can conduct self-adaptive angle adjustment in the angle-variable supporting component. The buffering mechanism is arranged between the tail of the lead screw and the fixing piece. According to the utility model, the variable-angle supporting structure for adjusting the angle is arranged and is fixed at the mounting part of the driving piece, and self-adaptive adjustment is realized through the operation of the motor, so that the purpose of maximizing the output power of the motor to act on a stress surface is achieved. After the position near the adjusting target position is reached, the buffer mechanism and the fixing piece are in soft contact to achieve shutdown, slow stopping is achieved, and pause discomfort caused by rigid impact is reduced.

Description

Technical Field

[0001] The utility model relates to a linear motor, in particular to a linear motor with a variable angle support and a buffer device. Background Art

[0002] Linear motors are widely used in the automotive industry. Most of them are rotating motors, which convert circular motion into linear motion through reduction gears, screws and other mechanisms, and drive components to achieve linear motion. Relative to the fixed position of the motor and the driven components, this motor structure does not have an adjustment mechanism, which has strict requirements on the installation and use of the product, greatly limiting the application range of the product.

[0003] During the seat adjustment process of the car, in order to increase the comfort and convenience of the product, electric adjustment of direction and position, massage, temperature control and ventilation and other measures are often adopted. Compared with the fixed driving method, the position adjusted by the linear motor is prone to a certain angle between the axis of the output shaft and the stress surface. In this case, according to the principle of mechanical decomposition, the working force is less than the required power, and the final result is a waste of energy, or the motor heats up due to overload, and the life is reduced until it is damaged.

[0004] From another perspective, during the seat adjustment process, the motor directly rotates at a high speed. Although it has been decelerated several times, there is still a certain risk of collision relative to the seat adjustment range (50-300mm). At present, most of the adjustment motors are directly driven by brushed motors, which cannot achieve stepless speed regulation. Drivers and passengers expect the adjustment to be done in one step. In fact, the adjustment is from zero to a fixed speed, so they will continue to press the adjustment button switch, causing over-adjustment until it reaches the limit position and then calls back. Such over-adjustment is generally caused by structural collision of the seat itself, so this adjustment method will also reduce comfort and shorten the product life. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a linear motor with a variable angle support and a buffer device in view of the deficiencies in the above-mentioned prior art, so as to solve the above-mentioned technical problem.

[0006] The technical problem to be solved by the utility model can be achieved through the following technical solutions:

[0007] A linear motor with a variable angle support and buffer device comprises a linear motor, wherein the linear motor comprises a motor, a reduction gearbox and a lead screw, wherein the motor drives the lead screw to perform linear motion through the reduction gearbox, and is characterized in that it also comprises a variable angle support component and a buffer mechanism, wherein the variable angle support component is mounted on an adjustment target, the reduction gearbox is mounted on the variable angle support component and can perform adaptive angle adjustment within the variable angle support component; the buffer mechanism is arranged between the tail of the lead screw and a fixing member.

[0008] In a preferred embodiment of the present utility model, the variable angle support member includes a U-shaped support frame, a support plate and a bottom plate, the support plate can be rotatably arranged on the U-shaped support frame and used to support the reduction gearbox; the bottom plate is fixed on the U-shaped support frame to confine the reduction gearbox within the U-shaped support frame.

[0009] In a preferred embodiment of the utility model, an open arc is provided in the U-shaped support frame, and the support plate is arranged in the open arc and can rotate in the open arc, thereby driving the variable angle support component of the reduction box to perform adaptive angle adjustment.

[0010] In a preferred embodiment of the present invention, the cross section of the U-shaped support frame is U-shaped.

[0011] In a preferred embodiment of the utility model, the buffer mechanism includes a side plate, a hook and a spring, the side plate is anchored to the end of the screw rod; a groove is provided on the side plate; one end of the hook is hinged to the side plate through a turn pin, and the other end of the hook is connected to the fixing member through a sleeve, and the sleeve is slidably arranged in the groove, one end of the spring is hooked on the hook, and the other end of the spring is hooked on the side plate.

[0012] In a preferred embodiment of the present invention, the adjustment target is a seat, and the fixing member is a vehicle body.

[0013] Due to the adoption of the above technical solution, the utility model sets a variable angle support structure for adjusting the angle, which is fixed at the installation position of the drive component, and realizes adaptive adjustment through the operation of the motor, so as to achieve the purpose of maximizing the motor output power acting on the force-bearing surface. In addition, the purpose of setting up the buffer mechanism is to increase the riding comfort of the driver and passengers and improve the product life. The buffer mechanism is added at the tail of the reducer and the transmission screw, and is connected in an anchoring manner, so that the drive motor, the reducer and the buffer mechanism are fixedly connected. After reaching the vicinity of the adjustment target position, the buffer mechanism and the fixed component are stopped by a softer contact method, achieving a slow stop and avoiding the discomfort caused by rigid impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic diagram of the structure of a linear motor with a variable angle support and a buffer device.

[0015] Figure 2 This is a schematic diagram of the V-shaped support frame structure of the utility model.

[0016] Figure 3 A structural schematic diagram of the buffer mechanism of the utility model.

[0017] Figure 4 for Figure 3 Bottom view of . DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings and specific implementations.

[0019] See also Figures 1 to 4 A linear motor with a variable angle support and a buffer device shown in the figure includes a linear motor 10, which includes a motor 11, a reduction box 12 and a screw 13. The motor 11 drives the screw 13 to perform linear motion through the reduction box 12.

[0020] The utility model is characterized in that it also includes a variable angle support member 20 and a buffer mechanism 30; the variable angle support member 20 is in the form of a sheet metal, and includes a U-shaped support frame 21 and a bottom plate 23 made of sheet metal, and a support plate 22 made of plastic. The cross section of the entire U-shaped support frame 21 is U-shaped, and an open arc 21a is provided in the U-shaped support frame 21. A pair of support plates 22 are arranged in the open arc 21a and can rotate in the open arc 21a. The pair of support plates 22 are used to rotatably support the reduction box 12 in the U-shaped support frame 21, so that the reduction box 12 can perform adaptive angle adjustment in the U-shaped support frame 21.

[0021] The bottom plate 23 is fixed to the U-shaped support frame 21 by fasteners, and the reduction box 12 is confined in the U-shaped support frame 21. The entire U-shaped support frame 21 is installed on a base (not shown in the figure), and the base is installed on the adjustment target, such as a seat.

[0022] The buffer mechanism 30 is arranged between the tail of the screw rod 13 and a fixed part such as a vehicle body. The buffer mechanism 30 includes a pair of side plates 31, a hook 32 and a spring 33. The pair of side plates 31 are anchored to the ends of the screw rod 33; a groove 31a is arranged on each side plate 31; the hook 32 is arranged between the pair of side plates 31, one end of the hook 32 is hinged on the pair of side plates 31 through a rotating pin 34, and the other end of the hook 32 is connected to the fixed part such as the vehicle body through a sleeve 35, and the sleeve 35 is slidably arranged in the groove 31a of the pair of side plates 31, one end of the spring 33 is hooked on the hook 32, and the other end of the spring 33 is hooked on the fixing pin 36 on the pair of side plates 31, and the two ends of the fixing pin 36 are riveted to the pair of side plates 31.

Claims

1. A linear motor with a variable angle support and a buffer device, comprising a linear motor, the linear motor comprising a motor, a reduction gearbox and a lead screw, the motor drives the lead screw to perform linear motion through the reduction gearbox, characterized in that: It also includes a set of variable angle support components and a set of buffer mechanisms. The variable angle support components are installed on the adjustment target, the reduction box is installed on the variable angle support components and can perform adaptive angle adjustment within the variable angle support components; the buffer mechanism is arranged between the tail of the screw rod and the fixing member.

2. A linear motor with a variable angle support and buffer device according to claim 1, characterized in that: The variable angle support member includes a U-shaped support frame, a support plate and a bottom plate. The support plate can be rotatably arranged on the U-shaped support frame and used to support the reduction gearbox; the bottom plate is fixed on the U-shaped support frame to confine the reduction gearbox within the U-shaped support frame.

3. A linear motor with a variable angle support and buffer device according to claim 2, characterized in that: An open circular arc is arranged in the U-shaped support frame, and the support plate is arranged in the open circular arc and can rotate in the open circular arc, thereby driving the variable angle support component of the reduction box to perform adaptive angle adjustment.

4. A linear motor with a variable angle support and buffer device according to claim 3, characterized in that: The cross section of the U-shaped support frame is U-shaped.

5. A linear motor with a variable angle support and buffer device according to claim 1, characterized in that: The buffer mechanism includes a side plate, a hook and a spring, the side plate is anchored to the end of the screw rod; a groove is provided on the side plate; one end of the hook is hinged to the side plate through a rotating pin, and the other end of the hook is connected to the fixing member through a sleeve, and the sleeve is slidably arranged in the groove, one end of the spring is hooked on the hook, and the other end of the spring is hooked on the side plate.

6. A linear motor with a variable angle support and buffer device according to claim 5, characterized in that: The adjustment target is a seat, and the fixing part is a vehicle body.

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