Storm blower

Abstract

Storm blowers (100), including: a handle section (10) designed to make it easier for a user to grip; a blower tube section (20) which is connected to the handle section (10) and is designed to provide wind power to the outside; a power supply section (60) designed to supply the storm blower (100) with electrical energy; characterized in that the storm blower (100) further comprises an inclination angle adjustment mechanism (30) arranged between the handle section (10) and the blower tube section (20), which can adjust an inclination angle of the blower tube section (20) relative to the handle section (10).

Description

Technical field

[0001] The present application relates to a storm blower, in particular a hand-held storm blower. State of the art

[0002] A storm blower is a high-performance blowing device, also known as a heavy-duty blower, leaf blower, vacuum cleaner, or blower. Due to its excellent performance in industrial dust removal, household cleaning, leaf (or snow) clearing, etc., the storm blower is increasingly used in everyday life. Handheld storm blowers are finding wider application due to their light weight and ease of use.

[0003] When using a conventional handheld storm blower, the blowing angle is adjusted by changing the position of the operator's hand. The operator's hand position adapts to the respective blowing angle. At certain specific angles, the operator's hand sometimes has to be held in a relatively tense position to grip the storm blower, which is very physically demanding. revelation

[0004] The present utility model aims to provide a storm blower that can solve the problems mentioned above.

[0005] According to a first aspect of the present utility model, a storm blower is provided, comprising: a handle section designed to make it easier for a user to grip; a blower pipe section that is connected to the handle section and is designed to to provide wind power externally; a power supply section designed to supply the storm blower with electrical energy; characterized in that the storm blower further comprises an inclination angle adjustment mechanism arranged between the handle section and the blower tube section, which can adjust an inclination angle of the blower tube section relative to the handle section.

[0006] According to an embodiment of the present utility model, the tilt angle adjustment mechanism comprises: a tilt control knob for controlling the locking and unlocking of the tilt angle of the blower tube section relative to the handle section; and / or a limiting structure for preventing the blower tube section from tilting beyond a tilt range relative to the handle section.

[0007] According to an embodiment of the present utility model, the tilt angle adjustment mechanism comprises the tilt control knob with an external gear, an internal gear ring meshing with the external gear, and a return spring that can move the tilt control knob so that the tilt control knob moves in the axial direction.

[0008] According to one embodiment of the present utility model, the angle of inclination of the blower tube section relative to the handle section is in the range of -15° to +30°.

[0009] According to one embodiment of the present utility model, a sound-absorbing material is provided inside the blower tube section; and / or a soft sleeve device is provided on a front part of the blower tube section.

[0010] According to an embodiment of the present utility model, the storm blower has a stepless speed control switch for stepless control of an air speed and a hold button for maintaining the air speed.

[0011] According to one embodiment of the present utility model, the hold button is provided adjacent to the stepless speed control switch.

[0012] According to one embodiment of the present utility model, the storm blower has a storm start switch with which a storm mode can be activated by pressing a button.

[0013] According to one embodiment of the present utility model, a protective grille is provided on a front part and / or a rear part of the blower tube section, which has a distance of at least 60 mm to a blade of the storm blower. The distance can optionally be adjusted to 70 mm, 80 mm, 90 mm, 100 mm, etc.

[0014] According to one embodiment of the present utility model, the storm blower is a hand-held storm blower.

[0015] Since the angle of inclination of the blower tube section relative to the handle section is adjustable in the storm blower according to the present utility model, at certain special angles only a simple adjustment of the angle of inclination of the blower tube section by the angle adjustment mechanism is required, without the need to hold the operator's hand in a relatively tense state to hold the storm blower, thereby reducing physical strain and improving the user experience. Brief description of the drawings

[0016] In the following, exemplary embodiments of the present disclosure are described in more detail with reference to the drawings. It shows: Fig. 1 a perspective view of a storm blower according to an embodiment of the present disclosure, wherein a blower tube section of the storm blower is at a first angle relative to a handle section, Fig. 2 a front view of the storm blower according to Fig. 1, where the blower tube section of the storm blower is at the first angle relative to the handle section, Fig. 3 a perspective view of a storm blower according to an embodiment of the present disclosure, in which a blower tube section of the storm blower is at a second angle relative to a handle section, Fig. 4 a front view of the storm blower according to Fig. 3, where the blower tube section of the storm blower is at the second angle relative to the handle section, Fig. 5 a schematic exploded view of a pivoting mechanism of a storm blower provided between a blower tube section and a handle section according to an embodiment of the present disclosure, Fig. 6 a more detailed exploded view of the swashplate swivel mechanism according to Fig. 5 in one direction, Fig. 7 a more detailed exploded view of the swashplate swivel mechanism according to Fig. 5 in another direction, and Fig. 8 a schematic view of a sound attenuation device of a storm blower according to an embodiment of the present disclosure.

[0017] Further purposes and features of the embodiments of the present disclosure will become apparent from the following detailed description in conjunction with the drawings. It should be understood, however, that the drawings are merely schematic representations intended only for illustrative purposes and are not meant to limit the scope of protection of the present utility model. Designs

[0018] Fig. 1 and Fig. Figure 2 shows a perspective view and a front view of a storm blower according to an embodiment of the present disclosure, in which a blower tube is positioned at a first angle relative to a handle. Fig. 3 and Fig. Figure 4 shows a perspective view or a front view of a storm blower according to an embodiment of the present disclosure, in which a blower tube section is at a second angle relative to a handle section.

[0019] Out of Fig. 1, Fig. 2, Fig. 3 to Fig. As shown in Figure 4, the storm blower 100 comprises a blower tube section 20, a handle section 10 pivotally connected to the blower tube section 20, and a battery module 60 connected to the handle section 10. A tilt angle adjustment mechanism 30 is provided at the connection point between the blower tube section 20 and the handle section 10 to adjust the angle between the blower tube section 20 and the handle section 10, so that a user can adjust the tilt angle of the blower tube section 20 according to the task and working space.For example, the blower tube section 20 can be adjusted at an upward angle relative to the handle section 10 when blowing leaves or snow away in a garden; for example, the blower tube section 20 can be adjusted at a downward angle relative to the handle section 10 when cleaning a roof. This allows for a good user experience.

[0020] In Fig. 1 and Fig. 2 The blower tube section 20 and the handle section 10 of the storm blower 100 are at a first angle, namely perpendicular to each other.

[0021] In Fig. 3 and Fig. 4 The blower tube section 20 and the handle section 10 of the storm blower 100 are at a second angle, i.e. the blower tube section 20 is inclined upwards at a certain angle relative to the handle section 10.

[0022] Fig. 5, Fig. 6 and Fig. Figure 7 schematically shows exploded views of an inclination angle adjustment mechanism 30 of a storm blower provided between a blower tube section and a handle section according to an embodiment of the present disclosure. Fig. 5, Fig. 6 to Fig. Figure 7 shows that the tilt angle adjustment mechanism 30 comprises an end cover section 140, which is provided at one end of the handle section 10 near the blower tube section 20. An internal toothed ring 170 is provided inside the end cover section 140. The internal toothed ring 170 can be formed integrally with the end cover section 140 or be fixedly connected to the end cover section 140.

[0023] The tilt angle adjustment mechanism 30 further comprises a housing section 160, which is provided at one end of the blower tube section 20 near the handle section 10. A tilt control knob 180 and a return spring 150 interacting with it are arranged in the housing section 160. A main body of the tilt control knob 180 is designed in the form of a cylinder, which is closed at one end to form a chamber for receiving the return spring 150. An external gear 130 is provided circumferentially at the closed end of the main body, which can mesh with the internal gear ring 170. A cylindrical projection 190 is provided axially at the closed end, extending coaxially to the axis of the cylindrical main body to facilitate the user's control of the locking and unlocking of the tilt angle adjustment mechanism by pressing.According to one embodiment of the present disclosure, the diameter of the cylindrical projection 190 is smaller than the diameter of the cylindrical main body. The external gear 130 is coaxial with a central axis of the cylindrical main body. A plurality of slots 185 extending along the axial direction are provided on a cylindrical wall of the cylindrical main body. According to one embodiment of the present disclosure, the number of slots 185 is six. It is understood that any other suitable number of slots 185 can be provided, for example, a number between 5 and 12.

[0024] The housing section 160 has a plurality of ribs 165 formed integrally with it. The number of ribs 165 equals the number of slots 185. The ribs 165 engage in the slots 185, so that the tilt control knob 180 is fixed to the blower tube section 20. That is, the tilt control knob 180 cannot rotate relative to the blower tube section 20.

[0025] The return spring 150 is arranged in the chamber of the cylindrical main body, whereby the tilt control knob 180 moves in the axial direction by deformation of the return spring 150. The return spring 150 is optionally a coil spring.

[0026] When the tilt angle of the blower pipe section 20 needs to be adjusted, the user presses the tilt control knob 180, which compresses the return spring 150 axially and moves it to the right. Fig. 6 moves in the axial direction so that the outer gear 130 disengages from the inner gear 170 (i.e., unlocks). When the outer gear 130 is disengaged from the inner gear 170, the blower tube section 20 can rotate relative to the handle section 10. After a rotation through a suitable angle, for example 15°, the user can release the tilt control knob 180, whereupon the return spring 150 moves the outer gear 130 to the left. Fig. 6 shifts so that the outer gear 130 meshes with the inner gear ring 170 (i.e., locking). At this point, the blower tube section 20 is locked relative to the handle section 10, allowing normal operation such as blowing away leaves, etc.

[0027] According to one embodiment of the present disclosure, the outer gear 130 of the tilt control knob 180 and the inner gear ring 170 each have 24 teeth in the circumferential direction. That is, when the gear rotates by one tooth, the corresponding angle of rotation is 15°. It is understood that the outer gear 130 and the inner gear ring 170 can have any other suitable number of teeth in the circumferential direction, i.e., each tooth can correspond to any suitable angle. In general, the outer gear 130 and the inner gear ring 170 can have any number of teeth between 20 and 60 in the circumferential direction.

[0028] Alternatively, the tilt angle adjustment mechanism 30 can comprise an internal toothed ring provided in the housing section 160 and a tilt control knob 180 and a return spring 150 arranged in the end cover section 140.

[0029] In the storm blower according to the present disclosure, the angle of inclination of the blower tube section 20 relative to the handle section 10 is optionally in the range of -30° to +45°, preferably in the range of -15° to +30°. In the present disclosure, a negative angle (e.g. -30°) denotes that the blower tube section 20 is inclined downwards relative to the handle section 10, while a positive angle (e.g. +45°) denotes that the blower tube section 20 is inclined upwards relative to the handle section 10.

[0030] According to an embodiment of the present disclosure, the tilt angle adjustment mechanism 30 of the storm blower 10 is provided with a limiting structure to prevent the blower tube section 20 from tilting beyond a certain range relative to the handle section 10.

[0031] According to another embodiment, the tilt angle adjustment mechanism 30 does not have an external gear and internal gear ring structure, but comprises a rotary shaft that rotates the blower tube section 20 relative to the handle section 10, wherein the rotary shaft is able to lock the blower tube section 20 in one or more rotatable positions relative to the handle section 10.

[0032] The storm blower 100 according to the present disclosure comprises a stepless speed control mechanism that allows stepless control of the air speed, so that the user can adjust the air speed from slow to fast or from fast to slow as required. The stepless speed control mechanism can be a mechanical stepless speed control mechanism or an electronic stepless speed control mechanism.

[0033] Fig. 1, Fig. 2, Fig. 3 to Fig. Figure 4 shows the stepless speed control switch 50 of the storm blower according to the present disclosure, wherein stepless speed control can be achieved by pressing the stepless speed control switch 50 and the air speed can be maintained by the hold button 80. In the storm blower according to the present disclosure, the hold button 80 is provided in the vicinity of the stepless speed control switch 50. That is, the hold button 80 is provided adjacent to the stepless speed control switch 50, so that the user can control the stepless speed control switch with his index finger and simultaneously maintain the desired air speed with his thumb.

[0034] Fig. Figure 3 further shows the storm start switch 70 of the present disclosure, wherein pressing the storm start switch 70 makes it possible to activate a storm mode at the push of a button, thereby increasing work efficiency.

[0035] As in Fig. 1, Fig. 2, Fig. 3 to Fig. As shown in Figure 4, a soft sleeve device 230 is provided on a front part of the blower tube section 20 of the storm blower 100 according to the present disclosure. The soft sleeve device 230 according to the present disclosure can be a leather sleeve, rubber sleeve, plastic sleeve, etc., fixed to the front part of the blower tube section 20 by attaching, snapping, gluing, etc. The soft sleeve device 230 can, on the one hand, prevent injuries to persons who accidentally collide with the front part of the storm blower, and on the other hand, act as a buffer in the event of a collision of the front part of the storm blower with a hard object (such as the ground) and thus protect the storm blower.

[0036] A protective grille is provided on a front part and / or a rear part inside the blower tube section 20 of the storm blower 100 according to the present disclosure ( Fig. Figure 1 also shows the protective grille 40 at the rear of the blower tube section 20). According to an embodiment of the present disclosure, the distance between the protective grille and a blade of the storm blower is more than 60 mm, preferably more than 90 mm. The arrangement of the protective grille 40 prevents hair or the like from being sucked in during operation and thus endangering personal safety.

[0037] Fig. 8 A schematic view of a sound-dampening device of a storm blower according to an embodiment of the present disclosure. As in Fig.As shown in Figure 8, an electric motor 90 is provided in the blower tube section 20. A sound-absorbing device is provided on an inner wall of the blower tube section near the electric motor 90. In the storm blower 100 according to the present disclosure, the sound-absorbing device can be a sound-absorbing material 200 (e.g., sound-absorbing wadding, etc.), so that the noise generated during operation of the storm blower is significantly reduced and the user experience is improved. In the storm blower 100 according to the present disclosure, the sound-absorbing material 200 is provided both upstream and downstream of the electric motor 90. That is, the sound-absorbing material 200 is provided at both an air inlet position and an air outlet position of the blower tube section 20.

[0038] According to one embodiment, the sound-absorbing material 200 can be fixed to an inner wall of the blower tube section 20 by a fixing device. The fixing device is, for example, a (single-sided or double-sided) adhesive tape or an adhesive.

[0039] According to a further embodiment of the present disclosure, the blower tube section 20 can have a double-walled housing, wherein a layer of sound-absorbing material is arranged between the two housing walls to block the propagation of noise.

[0040] Optionally, sound-absorbing material can be provided both between the two housing walls and on the inner wall of the blower tube section.

[0041] The battery module 60 can be permanently or detachably connected to the handle section 10 to supply the electric motor of the storm blower 100 with electrical energy. Optionally, the storm blower 100 can be connected directly to a mains socket via an electrical cable to be powered directly from the mains socket.

[0042] Since the angle of inclination of the blower tube section 20 relative to the handle section 10 is adjustable in the storm blower according to the present utility model, at certain special angles only a simple adjustment of the angle of inclination of the blower tube section 20 by the angle of inclination adjustment mechanism is required, without the need to hold the operator's hand in a relatively tense state to hold the storm blower, thereby reducing physical strain and improving the user experience.

[0043] Although the features of the embodiments of the present disclosure have been described, it is understood that the person skilled in the art may make various omissions, substitutions and changes to the structure of the present utility model, whereby adjustments to the structure of the present utility model are possible, provided that the function of the present utility model can be realized.

Claims

[1] Storm blowers (100), comprising: a handle section (10) designed to make it easier for a user to grip; a blower tube section (20) which is connected to the handle section (10) and is designed to provide wind power to the outside; a power supply section (60) designed to supply the storm blower (100) with electrical energy; characterized by , that the storm blower (100) further comprises an inclination angle adjustment mechanism (30) arranged between the handle section (10) and the blower tube section (20), which can adjust an inclination angle of the blower tube section (20) relative to the handle section (10). [2] Storm blower (100) according to claim 1, characterized by , that the tilt angle adjustment mechanism (30) includes: a tilt control knob (180) for controlling the locking and unlocking of the tilt angle of the blower tube section (20) relative to the handle section (10); and / or a limiting structure for preventing the blower tube section (20) from tilting beyond a tilt range relative to the handle section (10). [3] Storm blower (100) according to claim 1, characterized by , that the tilt angle adjustment mechanism (30) comprises the tilt control knob (180) with an external gear (130), an internal gear ring (170) meshing with the external gear (130) and a return spring (150) which can move the tilt control knob (180) so that the tilt control knob (180) moves in the axial direction. [4] Storm blower (100) according to one of claims 1 to 3, characterized by , that the inclination angle of the blower tube section (20) relative to the handle section (10) is in the range of -15° to +30°. [5] Storm blower (100) according to one of claims 1 to 3, characterized by , that a sound-absorbing material (200) is provided inside the blower tube section (20); and / or that a soft sleeve device (230) is provided on a front part of the blower tube section (20). [6] Storm blower (100) according to one of claims 1 to 3, characterized by , that the storm blower (100) has a stepless speed control switch (50) for stepless control of an air speed and a hold button (80) for maintaining the air speed. [7] Storm blower (100) according to claim 6, characterized by , that the hold button (80) is located adjacent to the continuously variable speed control switch (50). [8] Storm blower (100) according to one of claims 1 to 3, characterized by , that the storm blower (100) has a storm start switch (70) with which a storm mode can be activated by pressing a button. [9] Storm blower (100) according to one of claims 1 to 3, characterized by , that a protective grille is provided on a front part and / or a rear part of the blower tube section (20) which has a distance of at least 60 mm to a blade of the storm blower (100). [10] Storm blower (100) according to one of claims 1 to 3, characterized by , that the storm blower (100) is a hand-held storm blower.

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