Speed regulation control structure of blower

Abstract

In order to solve the problem of high fatigue feeling of an operator in use in the prior art, the speed regulation control structure of the hair drier comprises a rack, a finger pressing arm and a travel switch, a rotating shaft is rotationally arranged on the rack, and the middle of the finger pressing arm is rotationally connected with the rotating shaft; the front end of the finger pressing arm abuts against the travel switch, and an operation handle is arranged at the rear end of the finger pressing arm. The device further comprises a second speed regulating mechanism, the second speed regulating mechanism is rotationally connected with the rack, the tail end of the second speed regulating mechanism abuts against the finger pressing end, and when the second speed regulating mechanism is rotated, force transmission between the second speed regulating mechanism and the front end of the finger pressing arm is achieved. Compared with the prior art, by means of the improvement, the fatigue of an operator is obviously relieved, and the working continuity and the overall efficiency are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of garden hair dryers, in particular to a speed regulation control structure of a hair dryer. Background Art

[0002] Garden blowers, as a powerful assistant for modern landscaping and cleaning, are of great importance. This type of equipment is mainly used to blow away fallen leaves and road dust in the garden, effectively remove stagnant water and snow, and even play the role of forest fire extinguishing in emergencies. Its practicality and versatility are deeply favored by garden workers.

[0003] However, as far as the mainstream hair dryers on the market are concerned, most of them adopt a structure that achieves stepless speed regulation by pressing the switch trigger with a finger. Although this structure provides flexibility in operation to a certain extent, allowing the operator to easily adjust the wind speed according to actual needs, long-term use will inevitably bring fatigue to the operator. This is because continuous pressing of the switch trigger requires a certain amount of strength and concentration, especially when working over a large area or at high intensity, the operator's fingers are easily sore and tired.

[0004] More importantly, once the operator releases his finger due to fatigue or other reasons, the switch trigger will automatically reset, and the whole machine will be powered off and stop working. This not only interrupts the work rhythm and reduces work efficiency, but also may bring serious consequences in certain emergency situations, such as forest fire fighting.

[0005] Therefore, how to improve the switch design of the hair dryer, reduce the operator's fatigue, and improve the continuity and efficiency of work has become an urgent problem to be solved in the current design of garden hair dryers. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a hair dryer speed control structure, which solves the problem of high fatigue of the operator during use in the prior art.

[0007] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a hair dryer speed control structure, including a frame, a finger pressing arm and a travel switch, a rotating shaft is rotatably arranged on the frame, and the middle part of the finger pressing arm is rotatably connected to the rotating shaft; the front end of the finger pressing arm abuts against the travel switch, and the rear end of the finger pressing arm is provided with an operating handle; it also includes a second speed regulating mechanism, the second speed regulating mechanism is rotatably connected to the frame, and the end of the second speed regulating mechanism abuts against the finger pressing end, and when the second speed regulating mechanism is rotated, the second speed regulating mechanism and the front end of the finger pressing arm transmit forcefully.

[0008] Furthermore, the second speed regulating mechanism includes a shift fork, a friction pad and a clamping block connected by bolts, the shift fork is provided with a first rotating part, is rotatably connected to the frame through the first rotating part, and a first protrusion is provided along the radial direction of the first rotating part; the clamping block is provided with a second rotating part, and a second protrusion is provided along the axial direction of the second rotating part; the second protrusion abuts against the finger pressing end.

[0009] Furthermore, the finger pressing end is provided with a first plane, and the second protrusion is provided with a cam surface, wherein the cam surface abuts against the first plane.

[0010] Furthermore, the shift fork is provided with a first notch along the radial direction of the first rotating portion, the pressing block is provided with a third protrusion, and the first notch matches the third protrusion.

[0011] Furthermore, the shift fork is provided with a fourth protrusion along the axial direction of the first rotating portion, the pressing block is provided with a second notch, and the second notch matches the fourth protrusion.

[0012] Furthermore, it also includes a reset device, one end of which is in contact with the operating handle, and the other end of which is in contact with the frame.

[0013] The principle of the utility model is as follows: a second speed regulating mechanism is introduced, which is rotatably connected to the frame, and its end contacts the front end of the finger pressing arm. When the operator rotates the second speed regulating part, force is transmitted between its end and the front end of the pressing arm. The addition of the second speed regulating mechanism solves the finger fatigue and continuity problems of the traditional hair dryer operator when pressing the operating handle. Even if the operator temporarily releases the operating handle, due to the action of the second speed regulating mechanism, the front end of the finger pressing arm will not automatically reset, thereby ensuring that the hair dryer can continue to work and will not be interrupted by the operator's short rest.

[0014] Compared with existing technologies, this improvement not only significantly reduces the operator's fatigue, allowing them to maintain higher concentration and physical strength during long hours of work, but also greatly improves the continuity and overall efficiency of work. Whether in garden maintenance, cleaning operations or emergency forest fire fighting tasks, this blower can provide operators with long-lasting and stable support and become their indispensable right-hand man. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the utility model from the first perspective;

[0016] Figure 2 This is a schematic diagram of the second viewing angle of the utility model;

[0017] Figure 3 This is a schematic diagram of the locking fork of the utility model from the first perspective;

[0018] Figure 4 This is a schematic diagram of the locking fork of the utility model from a second viewing angle;

[0019] Figure 5 This is a schematic diagram of the locking and pressing block of the utility model from the first perspective;

[0020] Figure 6 This is a schematic diagram of the locking and pressing block of the utility model from a second viewing angle.

[0021] In the figure: 100 frame, 101 rotating shaft, 110 finger pressing arm, 111 operating handle, 112 first plane, 120 travel switch, 200 second speed regulating mechanism, 210 shift fork, 211 first rotating part, 212 first protrusion, 213 first notch, 214 fourth protrusion, 220 pressing block, 221 second rotating part, 222 second protrusion, 223 cam surface, 224 second notch, 225 third protrusion, 300 reset device. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] As attached Figure 1 to Figure 2 As shown, the hair dryer speed control structure includes a frame 100, a finger pressing arm 110 and a travel switch 120. A rotating shaft 101 is rotatably provided on the frame 100, and the middle part of the finger pressing arm 110 is rotatably connected to the rotating shaft 101; the front end of the finger pressing arm 110 abuts against the travel switch 120, and the rear end of the finger pressing arm 110 is provided with an operating handle 111; it also includes a second speed regulating mechanism 200, which is rotatably connected to the frame 100, and the end of the second speed regulating mechanism 200 abuts against the finger pressing end. When the second speed regulating mechanism 200 is rotated, the second speed regulating mechanism 200 and the front end of the finger pressing arm 110 transmit force.

[0024] In specific applications, the frame 100 serves as the main frame structure of the hair dryer and carries other components of the hair dryer. The operator controls the speed by holding the operating handle 111. For example, when the operator applies force, the finger pressing arm 110 rotates around its rotating shaft 101. The key to this action is that the front end of the finger pressing arm 110 is closely connected to the travel switch 120. As the pressing arm rotates, it drives the travel switch 120 to produce corresponding displacement. This displacement not only realizes the power-on and power-off functions of the hair dryer, but more importantly, it determines the displacement of the end of the travel switch 120 according to the angle of rotation of the pressing arm. That is, the operator's force is converted into an electrical signal, thereby realizing the stepless speed regulation function of the hair dryer. The operator can easily adjust the wind speed as needed without frequently changing tools or settings, which greatly improves the convenience and efficiency of operation.

[0025] The innovation of this case lies in the introduction of a second speed regulating mechanism 200, which is rotatably connected to the frame 100, and its end contacts the front end of the finger pressing arm 110. When the operator rotates the second speed regulating part, force is transmitted between its end and the front end of the pressing arm. The addition of the second speed regulating mechanism 200 solves the finger fatigue and continuity problems of the traditional hair dryer operator when pressing the operating handle 111. Even if the operator temporarily releases the operating handle 111, due to the action of the second speed regulating mechanism 200, the front end of the finger pressing arm 110 will not automatically reset, thereby ensuring that the hair dryer can continue to work without being interrupted by the operator's short rest.

[0026] This improvement not only significantly reduces the operator's fatigue, allowing them to maintain higher concentration and physical strength during long hours of work, but also greatly improves work continuity and overall efficiency. Whether in garden maintenance, cleaning operations or urgent forest fire fighting tasks, this blower can provide operators with long-lasting and stable support and become their indispensable right-hand man.

[0027] In order to improve the stability and operational performance of the structure of the present application, the second speed regulating mechanism 200 in the present case is composed of three parts: a shift fork 210, a friction pad and a clamping block 220, which are connected together by bolts to form a compact and powerful unit.

[0028] As attached Figures 3 to 6As shown, the shift fork 210 is one of the core components of this mechanism, and it is provided with a first rotating part 211 in the form of a rotating body structure. This first rotating part 211 is sleeved on the frame 100 and forms a rotational connection with the frame 100, so that the shift fork 210 can be flexibly rotated when needed. In addition, a first protrusion 212 is integrally provided along the radial direction of the first rotating part 211 as a lever of the shift fork 210. When the operator shifts the first protrusion 212, the shift fork 210 can be driven to rotate. The clamping block 220 is also provided with a second rotating part 221 in the form of a rotating body structure. A second protrusion 222 is integrally provided along the axial direction of the second rotating part 221. The end face of this second protrusion 222 is tightly abutted against the finger pressing end, ensuring that force can be accurately and efficiently transmitted during operation.

[0029] The connection between the second rotating part 221 and the first rotating part 211 adopts an optional existing technology, such as a toothed connection, to ensure stable transmission between the two. At the same time, in order to further improve the performance of this mechanism, a friction pad is added between the second rotating part 221 and the first rotating part 211. The force storage effect of the friction pad is used to avoid the rebound phenomenon that may occur in the second rotating part 221 during operation.

[0030] When the operator moves the first protrusion 212, the force is smoothly transmitted to the second rotating part 221 through the first rotating part 211. Then, the end surface of the second protrusion 222 transmits force to the front end of the finger pressing arm 110, thereby driving the travel switch 120 to move. Due to the presence of the friction pad, the displacement of the travel switch 120 can be maintained at the same position and will not change due to the operator's short rest or other external factors.

[0031] In order to further ensure that the travel switch 120 can be stably maintained at the specified position, in this case, we have improved the contact method between the second protrusion 222 and the front end of the finger pressing arm 110. Specifically, the finger pressing end is provided with a flat first plane 112, and the second protrusion 222 is provided as a cam surface 223. When the operator performs a pressing operation, the cam surface 223 will be tightly abutted against the first plane 112 to form a stable support point. Compared with traditional point contact or line contact, this contact method has a larger contact area and more uniform force distribution, thereby significantly improving the stability and durability of the structure. In particular, when the cam surface 223 is designed to have a self-locking property, the effect is better. The self-locking cam surface 223 can generate a certain friction force when subjected to external force, effectively resist external interference and vibration, and ensure that the travel switch 120 will not easily change position due to accidental touch or other external forces.

[0032] In order to improve the reliability of the second speed regulating mechanism 200 and ensure that its components can work synchronously and stably during the rotation process, we further improved the shift fork 210 and the pressing block 220. First, the shift fork 210 is provided with a first notch 213 along the radial direction of the first rotating part 211. At the same time, a third protrusion 225 is correspondingly provided on the pressing block 220. When the shift fork 210 and the pressing block 220 are assembled, the first notch 213 and the third protrusion 225 can fit together tightly. This structure not only ensures the precise fit between the two and facilitates assembly; it also enables the pressing block 220 to rotate synchronously smoothly when the shift fork 210 rotates. This radial fit greatly improves the overall reliability and stability of the second speed regulating mechanism 200. In order to further improve the reliability, we can also choose to set a fourth protrusion 214 on the shift fork 210 along the axial direction of the first rotating part 211. Correspondingly, a second notch 224 is provided on the pressing block 220. Similarly, after the fork 210 is assembled with the clamping block 220, the second notch 224 and the fourth protrusion 214 can fit tightly. When the fork 210 rotates, this axial fitting method can also ensure that the clamping block 220 rotates synchronously, thereby further improving the reliability of the second speed regulating mechanism 200. The above two structures can be used alone or together. Based on the mechanical characteristics and kinematic requirements of the mechanism during rotation, they ensure precise matching and smooth transmission between the components. Through this structure, we have successfully improved the reliability of the second speed regulating mechanism 200, so that it can maintain stable performance during long-term and high-intensity use. This is especially important for equipment that needs to work continuously for a long time, such as garden blowers, because they must be able to provide long-lasting and reliable support under various complex environmental conditions.

[0033] In this case, a reset device 300 can also be added to enhance the convenience and operating experience of the device. One end of the reset device 300 is in contact with the operating handle 111, and the other end is in contact with the frame 100. This structure ensures that the reset device 300 can function quickly and accurately after the operator unloads the force. Specifically, in this case, the reset device 300 can select a reset spring. The reset spring has good elasticity and restoring force. When the operator stops applying force, the reset spring can quickly restore the operating handle 111 to its original state. This process is smooth and fast, which greatly improves the convenience of operation of the device. In addition, the introduction of the reset device 300 also plays a role in protecting the device to a certain extent. In the event of an operator's misoperation or sudden unloading of force, the reset device 300 can respond quickly and restore the operating handle 111 to a safe position, thereby avoiding possible damage or performance degradation to the device and enhancing the safety and stability of the device.

Claims

1. The hair dryer speed control structure is characterized by: The invention comprises a frame (100), a finger pressing arm (110) and a travel switch (120); a rotating shaft (101) is rotatably arranged on the frame (100); the middle part of the finger pressing arm (110) is rotatably connected to the rotating shaft (101); the front end of the finger pressing arm (110) abuts against the travel switch (120); and the rear end of the finger pressing arm (110) is provided with an operating handle (111); and a second speed regulating mechanism (200) is also included, wherein the second speed regulating mechanism (200) is rotatably connected to the frame (100), and the rear end of the second speed regulating mechanism (200) abuts against the finger pressing end. When the second speed regulating mechanism (200) is rotated, the second speed regulating mechanism (200) and the finger pressing arm (120) are rotated. 10) The front end has strong transmission; the second speed regulating mechanism (200) includes a shift fork (210), a friction pad and a clamping block (220) connected by bolts, the shift fork (210) is provided with a first rotating part (211), is rotatably connected to the frame (100) through the first rotating part (211), and a first protrusion (212) is provided along the radial direction of the first rotating part (211); the clamping block (220) is provided with a second rotating part (221), and a second protrusion (222) is provided along the axial direction of the second rotating part (221); the second protrusion (222) is in contact with the finger pressing end; and a friction pad is added between the second rotating part (221) and the first rotating part (211).

2. The hair dryer speed control structure according to claim 1, characterized in that: The finger pressing end is provided with a first plane (112), and the second protrusion (222) is provided with a cam surface (223), wherein the cam surface (223) abuts against the first plane (112).

3. The hair dryer speed control structure according to claim 1 or 2, characterized in that: The shift fork (210) is provided with a first notch (213) along the radial direction of the first rotating portion (211), the pressing block (220) is provided with a third protrusion (225), and the first notch (213) matches the third protrusion (225).

4. The hair dryer speed control structure according to claim 1 or 2, characterized in that: The shift fork (210) is provided with a fourth protrusion (214) along the axial direction of the first rotating part (211), and the pressing block (220) is provided with a second notch (224), and the second notch (224) matches the fourth protrusion (214).

5. The hair dryer speed control structure according to claim 3, characterized in that: The shift fork (210) is provided with a fourth protrusion (214) along the axial direction of the first rotating part (211), and the pressing block (220) is provided with a second notch (224), and the second notch (224) matches the fourth protrusion (214).

6. The hair dryer speed control structure according to claim 1, 2 or 5, characterized in that: It also includes a reset device (300), one end of which abuts against the operating handle (111), and the other end of which abuts against the frame (100).

Images