Blow pipe steering structure and vehicle-mounted blower

Abstract

The utility model provides a blowpipe steering structure and a vehicle-mounted blower, and the blowpipe steering structure comprises a steering motor provided with a motor shaft; the fixed seat is fixed relative to the vehicle-mounted blower; the transmission assembly comprises a driving wheel, a driven wheel and a synchronous belt connected with the driving wheel and the driven wheel, the driving wheel is connected with the motor shaft in a matched mode, and the driven wheel is installed on the fixing base and can rotate relative to the fixing base; the blowing pipe is connected with the driven wheel so as to follow the driven wheel to steer; wherein a signal switch is arranged on the fixed seat, the signal switch is electrically connected with the steering motor, a trigger part is correspondingly arranged on the driven wheel, the trigger part is configured to rotate along with the driven wheel, and when the trigger part triggers the signal switch, the steering motor stops working. Compared with the prior art, the blowpipe steering structure has the advantages that the rotating angle of the blowpipe can be limited, the blowpipe is prevented from impacting a vehicle body, and meanwhile, the blowpipe steering structure is high in transmission force and transmission precision and easy to maintain.

Description

Technical Field

[0001] The utility model relates to a blowpipe steering structure and a vehicle-mounted hair dryer, belonging to the technical field of vehicle-mounted hair dryers. Background Art

[0002] Most of the existing car hair dryers use manual control of the steering angle of the car hair dryer when blowing air. Therefore, the car body may be hit when adjusting the steering direction of the car hair dryer, and the car hair dryer cannot automatically identify and limit the rotation angle. In addition, common transmission methods of the blowpipe of the car hair dryer include gear transmission, belt transmission, and chain transmission, which have low degree of freedom, difficult maintenance, small transmission force, and low transmission accuracy.

[0003] In view of this, it is indeed necessary to improve the existing blowpipe steering structure and vehicle-mounted hair dryer to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a blowpipe steering structure, which can limit the rotation angle of the blowpipe to prevent the blowpipe from hitting the vehicle body, and at the same time has high transmission force and transmission accuracy and is easy to maintain.

[0005] To achieve the above-mentioned purpose, the utility model provides a blowpipe steering structure, which is applied to a vehicle-mounted hair dryer, comprising:

[0006] A steering motor is provided with a motor shaft;

[0007] A fixing seat, fixed relative to the vehicle-mounted hair dryer;

[0008] A transmission assembly, comprising a driving wheel, a driven wheel and a synchronous belt connecting the driving wheel and the driven wheel, wherein the driving wheel is cooperatively connected to the motor shaft, and the driven wheel is mounted on the fixing seat and can rotate relative to the fixing seat;

[0009] A blowpipe connected to the driven wheel to follow the rotation of the driven wheel;

[0010] Among them, a signal switch is provided on the fixing seat, and the signal switch is electrically connected to the steering motor. A trigger part is correspondingly provided on the driven wheel, and the trigger part is configured to rotate with the driven wheel. When the trigger part triggers the signal switch, the steering motor stops working.

[0011] As a further improvement of the utility model, two signal switches are provided, the two signal switches are symmetrical to each other and are arranged close to the driving wheel, and two trigger parts are also provided accordingly to cooperate with the two signal switches to limit the rotation angle of the driven wheel.

[0012] As a further improvement of the present invention, the trigger part is arranged on the outer peripheral wall of the driven wheel, the signal switch includes a switch body, a pressing arm and a button located between the switch body and the pressing arm, the first end of the pressing arm is connected to the switch body, and the second end protrudes toward the driven wheel, when the trigger part follows the driven wheel to rotate until it is squeezed with the second end of the pressing arm, the second end of the pressing arm moves toward the switch body, so that the pressing arm squeezes the button, and the signal switch is triggered.

[0013] As a further improvement of the utility model, the button is movably arranged on the switch body and protrudes toward one side of the pressing arm. In an initial state, the button is supported between the switch body and the pressing arm so that the second end of the pressing arm is away from the switch body.

[0014] As a further improvement of the utility model, the top of the driven wheel is provided with a clamping portion extending outward from its outer peripheral wall, the fixing seat is provided with a receiving groove, the clamping portion and the signal switch are both received in the receiving groove, and the triggering portion is arranged on the outer peripheral wall of the clamping portion.

[0015] As a further improvement of the present invention, the trigger portion and the clamping portion are integrally formed, and the trigger portion is provided with a bevel, and the bevel is used to guide the trigger portion to squeeze the signal switch to trigger the signal switch.

[0016] As a further improvement of the present invention, the steering motor is fixed by a mounting frame, and the motor shaft extends out of the mounting frame and has an interference fit with the driving wheel to drive the driving wheel to rotate synchronously.

[0017] As a further improvement of the utility model, the blowpipe steering structure also includes a tensioning assembly, which includes two connecting plates, an elastic member connecting the two connecting plates, and two tensioning wheels respectively installed on the two connecting plates, the two connecting plates are arranged on both sides of the driving wheel, and the first end of each connecting plate is fixedly mounted on the mounting frame, and the second end extends toward the driven wheel.

[0018] As a further improvement of the present invention, the tensioning wheel is connected to the second end of the connecting plate, and the tensioning wheel is located between the driving wheel and the driven wheel, and abuts against the outer side surface of the synchronous belt to tighten the synchronous belt; the elastic member is arranged opposite to the tensioning wheel, and connects the second ends of the two connecting plates.

[0019] Another object of the utility model is to provide a vehicle-mounted hair dryer with the above-mentioned blowpipe steering structure.

[0020] To achieve the above object, the utility model provides a vehicle-mounted hair dryer, comprising a fixing frame, a duct structure and a blow pipe steering structure, wherein the fixing frame is located between the duct structure and the blow pipe steering structure, the duct structure comprises a motor, a fan blade connected to the motor and a guide cone for air intake, and the blow pipe steering structure comprises:

[0021] A steering motor is provided with a motor shaft;

[0022] A fixing seat, fixed relative to the vehicle-mounted hair dryer;

[0023] A transmission assembly, comprising a driving wheel, a driven wheel and a synchronous belt connecting the driving wheel and the driven wheel, wherein the driving wheel is cooperatively connected to the motor shaft, and the driven wheel is mounted on the fixing seat and can rotate relative to the fixing seat;

[0024] A blowpipe connected to the driven wheel to follow the rotation of the driven wheel;

[0025] Among them, a signal switch is provided on the fixing seat, and the signal switch is electrically connected to the steering motor. A trigger part is correspondingly provided on the driven wheel, and the trigger part is configured to rotate with the driven wheel. When the trigger part triggers the signal switch, the steering motor stops working.

[0026] The beneficial effects of the utility model are as follows: the blowpipe steering structure of the utility model, on the one hand, utilizes a synchronous belt to connect the driving wheel and the driven wheel to realize transmission, so that the blowpipe is steered, has high transmission force and transmission accuracy, and is easy to maintain; on the other hand, by setting a signal switch, and setting the signal switch to be electrically connected to the steering motor, so that when the trigger part on the driven wheel follows the driven wheel to rotate to trigger the signal switch, the steering motor stops working, thereby realizing the limitation of the rotation angle of the blowpipe and preventing the blowpipe from hitting the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional structural schematic diagram of the vehicle-mounted hair dryer of the utility model.

[0028] Figure 2 yes Figure 1 Cross-sectional view of .

[0029] Figure 3 yes Figure 1 Schematic diagram of the three-dimensional structure of the middle blowpipe steering structure.

[0030] Figure 4 yes Figure 3 Schematic diagram of the internal structure of the center blowpipe steering structure.

[0031] Figure 5 yes Figure 4 Assembly drawing of the fixing base and signal switch.

[0032] Figure 6 yes Figure 4 Schematic diagram of the three-dimensional structure of the driven wheel.

[0033] Figure 7 yes Figure 4 Assembly drawing of the connecting parts and blowpipe.

[0034] Figure 8 yes Figure 4 Schematic diagram of the three-dimensional structure of the medium signal switch.

[0035] Fig. 9 yes Figure 4 Assembly drawing of the steering motor, mounting bracket and tensioning assembly. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0037] See also Figure 1 to Figure 2 As shown, the utility model discloses a vehicle-mounted hair dryer 100, including a fixing frame 400, a duct structure 300 and a blow pipe steering structure 200. The fixing frame 400 is located between the duct structure 300 and the blow pipe steering structure 200, and is used to install the vehicle-mounted hair dryer 100 to a lawn mower (not shown). The duct structure 300 includes a motor 301, a fan blade 302 connected to the motor 301, and a guide cone 303 for air intake. The blow pipe steering structure 200 includes a steering motor 1, a fixing seat 2, a transmission assembly 3 and a blow pipe 4, and the blow pipe 4 can be turned to discharge air.

[0038] The lawn mower (not shown) in this embodiment is provided with a controller (not shown), a joystick is provided on the controller to control the left and right steering of the blowpipe, a Bluetooth transmitter is provided inside the controller, a control panel (not shown) is provided inside the vehicle-mounted blower 100, the steering motor 1 is electrically connected to the control panel, a Bluetooth receiver is provided on the control panel, and the start and stop and rotation direction of the steering motor 1 are controlled by transmitting signals via Bluetooth. The connection between the controller and the control panel is cancelled, and the rotation signal is sent to the steering motor 1 via Bluetooth, so that the control is not restricted by the length of the cable, and the control is more convenient.

[0039] like Figure 3 to Figure 4As shown, the fixing seat 2 is fixed relative to the vehicle-mounted hair dryer 100, that is, the fixing seat 2 is fixedly mounted on the fixing frame 400, the transmission assembly 3 includes a driving wheel 31, a driven wheel 32 and a synchronous belt 33 connecting the driving wheel 31 and the driven wheel 32, the steering motor 1 is provided with a motor shaft (not shown), the driving wheel 31 is cooperatively connected with the motor shaft, the driven wheel 32 is mounted on the fixing seat 2 and can rotate relative to the fixing seat 2, and the blow pipe 4 is connected to the driven wheel 32 to follow the steering of the driven wheel 32.

[0040] Specifically, the steering motor 1 is fixed by a mounting frame 5, and the mounting frame 5 is fixedly connected to the fixing frame 400. The motor shaft extends out of the mounting frame 5 and is interference-fitted with the driving wheel 31 to drive the driving wheel 31 to rotate synchronously. The driving wheel 31 is pressed onto the motor shaft so that the driving wheel 31 will not fall off when following the steering motor 1. The driving wheel 31 drives the rotation of the driven wheel 32 through the synchronous belt 33, which has high transmission force and transmission accuracy and is easy to maintain. The blow pipe 4 is fixedly connected to the driven wheel 32 through a connecting member 6. One end of the connecting member 6 is arranged around the outside of the driven wheel 32 and is fixedly connected by a fastener 61. The blow pipe 4 is sleeved on the other end of the connecting member 6 and is fixedly connected by a clamp 7 for easy disassembly.

[0041] Optionally, the blow pipe 4 is made of rubber material to prevent the blow pipe 4 from being damaged by impact, and the blow pipe 4 has a mesh interlayer inside to increase the wear resistance of the blow pipe 4. The blow pipe steering structure 200 also includes a shell 8 connected to the fixing frame 400, and the shell 8 shields the steering motor 1, the transmission assembly 3 and the fixing seat 2 between the shell 8 and the fixing frame 400.

[0042] like Figures 4 to 7 As shown, the fixing seat 2 is provided with a signal switch 9, and the signal switch 9 is electrically connected to the steering motor 1. The driven wheel 32 is correspondingly provided with a trigger part 321, and the trigger part 321 is configured to rotate with the driven wheel 32, and when the trigger part 321 triggers the signal switch 9, the steering motor 1 stops working. In this embodiment, two signal switches 9 are provided, and the two signal switches 9 are symmetrical to each other and are arranged close to the driving wheel 31. Two trigger parts 321 are also correspondingly provided to cooperate with the two signal switches 9 to limit the rotation angle of the driven wheel 32.

[0043] Since the driven wheel 32 can rotate freely in the fixing seat 2, the two signal switches 9 for left and right limit are placed on the fixing seat 2, and two trigger parts 321 are arranged on both sides of the driven wheel 32. The trigger parts 321 are specifically arranged on the outer peripheral wall of the driven wheel 32. When the synchronous belt 33 drives the driven wheel 32 to rotate, the trigger part 321 triggers the signal switch 9 and sends a signal to the control panel to turn off the steering motor 1 and stop the rotation, so as to realize the left and right steering limit, so as to prevent the rotating blowpipe 4 from hitting the vehicle.

[0044] It is understandable that the positions of the two trigger parts 321 are set according to the relative positions of the blowpipe 4 and the lawn mower, and are based on stopping the rotation just before hitting the lawn mower, and are generally set to 30-70° on the left and right limits.

[0045] In this embodiment, the top of the driven wheel 32 is provided with a clamping portion 322 extending outward from the outer peripheral wall thereof, the fixing seat 2 is provided with a receiving groove 21, the clamping portion 322 and the signal switch 9 are both received in the receiving groove 21, the triggering portion 321 is provided on the outer peripheral wall of the clamping portion 322, the clamping portion 322 is supported in the receiving groove 21, and can rotate in the receiving groove 21. The triggering portion 321 and the clamping portion 322 are integrally formed, and the triggering portion 321 is provided with a bevel, and the bevel is used to guide the triggering portion 321 to squeeze the signal switch 9 so that the signal switch 9 is triggered.

[0046] In other embodiments, the fixing base 2 may also not be provided with the receiving groove 21, the clamping portion 322 is directly supported on the surface of the fixing base 2, and the signal switch 9 is also directly installed on the surface of the fixing base 2, as long as the driven wheel 32 can rotate relative to the fixing base 2 and the trigger portion 321 can trigger the signal switch 9.

[0047] like Figure 8 As shown, the signal switch 9 includes a switch body 91, a pressing arm 92, and a button 93 located between the switch body 91 and the pressing arm 92. The first end of the pressing arm 92 is connected to the switch body 91, and the second end protrudes toward the driven wheel 32. When the triggering portion 321 rotates with the driven wheel 32 to be pressed against the second end of the pressing arm 92, the second end of the pressing arm 92 moves toward the switch body 91, so that the pressing arm 92 presses the button 93, and the signal switch 9 is triggered. The button 93 is movably arranged on the switch body 91 and protrudes toward one side of the pressing arm 92. In the initial state, the button 93 is supported between the switch body 91 and the pressing arm 92, so that the second end of the pressing arm 92 is away from the switch body 91.

[0048] Specifically, when the driven wheel 32 drives the trigger part 321 to rotate in the first direction and triggers the signal switch 9, after the signal switch 9 is triggered, a signal prohibiting further rotation in the first direction will be sent to the control panel, and the control panel will turn off the steering motor 1. At this time, the driven wheel 32 can only be manipulated to rotate in a second direction opposite to the first direction. The driven wheel 32 drives the trigger part 321 to rotate in the second direction, and the signal switch 9 is triggered and the button 93 rebounds to restore the initial state. At this time, the signal switch 9 will send a signal allowing further rotation in the first direction to the control panel. Of course, the driven wheel 32 can also rotate in the second direction.

[0049] like Fig. 9 As shown, the steering structure of the blowpipe 4 further includes a tensioning assembly 10, which includes two connecting pieces 101, an elastic member 102 connecting the two connecting pieces 101, and two tensioning wheels 103 respectively mounted on the two connecting pieces 101. The elastic member 102 may be a tension spring. The two connecting pieces 101 are respectively arranged on both sides of the driving wheel 31, and the first end of each connecting piece 101 is fixedly mounted on the mounting frame 5, and the second end extends toward the driven wheel 32. The tensioning wheel 103 is connected to the second end of the connecting piece 101, and the tensioning wheel 103 is located between the driving wheel 31 and the driven wheel 32, and abuts against the outer side surface of the synchronous belt 33 to tighten the synchronous belt 33. The tensioning wheel 103 is located on the outer side of the synchronous belt 33 to further reduce the risk of tooth skipping between the driving wheel 31 and the synchronous belt 33.

[0050] In this embodiment, the length of the synchronous belt 33 is slightly longer than the theoretical length, and the synchronous belt 33 is easy to replace and maintain after the tensioning wheel 103 is loosened; the elastic member 102 is arranged opposite to the tensioning wheel 103 and connects the second ends of the two connecting plates 101.

[0051] The tensioning of the synchronous belt 33 adopts a bilateral tensioning structure, with one elastic member 102 connecting the tensioning wheels 103 on both sides. As the blow pipe 4 rotates left and right, the force-bearing side will change, and the tensioning side can be pulled by the force-bearing side of the elastic member 102. In comparison, the traditional unilateral tensioning is more suitable for use in the case of unchanged steering. In the case of steering changes, unilateral tensioning requires a large tensioning force and is prone to tooth skipping. The use of bilateral tensioning only requires a smaller tensioning force to avoid tooth skipping between the driving wheel 31 and the synchronous belt 33.

[0052] In summary, the blowpipe steering structure 200 of the utility model is provided with a transmission assembly 3 including a driving wheel 31, a driven wheel 32 and a synchronous belt 33 connecting the driving wheel 31 and the driven wheel 32, and the driving wheel 31 is connected with the motor shaft, and the driven wheel 32 is installed on the fixed seat 2 and can rotate relative to the fixed seat 2, so that the transmission assembly 3 has high transmission force and transmission accuracy, and is easy to maintain; on the other hand, by arranging a signal switch 9 on the fixed seat 2, and setting the signal switch 9 to be electrically connected to the steering motor 1, when the trigger part 321 on the driven wheel 32 follows the driven wheel 32 to rotate to trigger the signal switch 9, the steering motor 1 stops working, thereby realizing the limitation of the rotation angle of the blowpipe 4 and preventing the blowpipe 4 from hitting the vehicle body.

[0053] The above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model.

Claims

1. A blowpipe steering structure, applied to a car-mounted hair dryer, characterized in that: include: A steering motor is provided with a motor shaft; A fixing seat, fixed relative to the vehicle-mounted hair dryer; A transmission assembly, comprising a driving wheel, a driven wheel and a synchronous belt connecting the driving wheel and the driven wheel, wherein the driving wheel is cooperatively connected to the motor shaft, and the driven wheel is mounted on the fixing seat and can rotate relative to the fixing seat; A blowpipe connected to the driven wheel to follow the rotation of the driven wheel; Among them, a signal switch is provided on the fixing seat, and the signal switch is electrically connected to the steering motor. A trigger part is correspondingly provided on the driven wheel, and the trigger part is configured to rotate with the driven wheel. When the trigger part triggers the signal switch, the steering motor stops working.

2. The blowpipe steering structure according to claim 1, characterized in that: The signal switches are provided with two, which are symmetrical to each other and are arranged close to the driving wheel. The trigger parts are also provided with two corresponding ones to cooperate with the two signal switches to limit the rotation angle of the driven wheel.

3. The blowpipe steering structure according to claim 1, characterized in that: The trigger part is arranged on the outer peripheral wall of the driven wheel, and the signal switch includes a switch body, a pressing arm and a button located between the switch body and the pressing arm. The first end of the pressing arm is connected to the switch body, and the second end protrudes toward the driven wheel. When the trigger part rotates with the driven wheel until it is squeezed with the second end of the pressing arm, the second end of the pressing arm moves toward the switch body, so that the pressing arm squeezes the button, and the signal switch is triggered.

4. The blowpipe steering structure according to claim 3, characterized in that: The button is movably arranged on the switch body and protrudes toward one side of the pressing arm. In an initial state, the button is supported between the switch body and the pressing arm so that the second end of the pressing arm is away from the switch body.

5. The blowpipe steering structure according to claim 1, characterized in that: The top of the driven wheel is provided with a clamping portion extending outward from its outer peripheral wall, the fixing seat is provided with a receiving groove, the clamping portion and the signal switch are both received in the receiving groove, and the triggering portion is arranged on the outer peripheral wall of the clamping portion.

6. The blowpipe steering structure according to claim 5, characterized in that: The triggering part and the clamping part are integrally formed, and the triggering part is provided with an oblique edge, and the oblique edge is used to guide the triggering part to squeeze the signal switch to trigger the signal switch.

7. The blowpipe steering structure according to claim 1, characterized in that: The steering motor is fixed by a mounting frame, and the motor shaft extends out of the mounting frame and is interference-fitted with the driving wheel to drive the driving wheel to rotate synchronously.

8. The blowpipe steering structure according to claim 7, characterized in that: The blowpipe steering structure also includes a tensioning assembly, which includes two connecting plates, an elastic member connecting the two connecting plates, and two tensioning wheels respectively installed on the two connecting plates. The two connecting plates are arranged on both sides of the driving wheel, and the first end of each connecting plate is fixedly installed on the mounting frame, and the second end extends toward the driven wheel.

9. The blowpipe steering structure according to claim 8, characterized in that: The tensioning wheel is connected to the second end of the connecting plate, and the tensioning wheel is located between the driving wheel and the driven wheel, and abuts against the outer side surface of the synchronous belt to tighten the synchronous belt; the elastic member is arranged opposite to the tensioning wheel and connects the second ends of the two connecting plates.

10. A vehicle-mounted hair dryer, comprising a fixing frame, a duct structure and a blowpipe steering structure, wherein the fixing frame is located between the duct structure and the blowpipe steering structure, the duct structure comprises a motor, a fan blade connected to the motor and a guide cone, and is used for air intake, characterized in that: The blowpipe steering structure comprises: A steering motor is provided with a motor shaft; A fixing seat, fixed relative to the vehicle-mounted hair dryer; A transmission assembly, comprising a driving wheel, a driven wheel and a synchronous belt connecting the driving wheel and the driven wheel, wherein the driving wheel is cooperatively connected to the motor shaft, and the driven wheel is mounted on the fixing seat and can rotate relative to the fixing seat; A blowpipe connected to the driven wheel to follow the rotation of the driven wheel; Among them, a signal switch is provided on the fixing seat, and the signal switch is electrically connected to the steering motor. A trigger part is correspondingly provided on the driven wheel, and the trigger part is configured to rotate with the driven wheel. When the trigger part triggers the signal switch, the steering motor stops working.

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