CN220876178U - Blowing structure - Google Patents

Abstract

The application relates to a blowing structure, which comprises a main body part and a blowing part, wherein the main body part is provided with a first connecting part; the air blowing part is provided with a second connecting part, one end of the first connecting part is rotationally connected with one end of the second connecting part through a damping rotating shaft, the other end of the first connecting part is rotationally connected with the other end of the second connecting part through a rotating shaft, and the rotating shaft is used for communicating the inner cavity of the first connecting part with the inner cavity of the second connecting part; in the first state, the air outlet direction of the air blowing part is downward; in the second state, the air outlet direction of the air blowing part is horizontally arranged; in the third state, the air outlet direction of the air blowing part is obliquely upward. According to the application, through the rotary connection of the first connecting part and the second connecting part and the control of the damping rotating shaft, various use scenes are provided for users, the applicability is improved, the relative positions of the blowing part and the main body part are kept inconvenient according to the selection of the users, the users are not required to continuously adjust the hand gestures according to the objects to be blown, and the convenience of the users is improved.

Description

Blowing structure

Technical Field

The application relates to the field of electrical equipment, in particular to a blowing structure.

Background

Along with the continuous improvement of living standard, the hair dryer is also becoming a necessity in people's life gradually, and its structure mainly includes fan and heating wire, and when the hair dryer work, the heating wire circular telegram generates heat, and the air current that the fan blown is heated through the heating wire, produces warm braw to weather hair or clothing etc..

However, existing blowers are often hand-held, requiring the user to hold the blower during use, and then adjust the pose of the user's hand to orient the blow towards the article being blown as desired.

Disclosure of utility model

The application aims to provide a blowing structure which can keep the relative positions of a blowing part and a main body part inconvenient according to the selection of a user, does not need to continuously adjust the gesture of the hand of the user according to the objects to be blown, and improves the convenience of the user.

To this end, in a first aspect, an embodiment of the present application provides a blowing structure, including: a main body part provided with a first connecting part communicated with the inner cavity of the main body part; the air blowing part is provided with a second connecting part communicated with the inner cavity of the air blowing part, one end of the first connecting part is rotationally connected with one end of the second connecting part through a damping rotating shaft, the other end of the first connecting part is rotationally connected with the other end of the second connecting part through a rotating shaft, the rotating shaft axially penetrates through a communication hole, and the communication hole is used for communicating the inner cavity of the first connecting part with the inner cavity of the second connecting part; in the first state, the first connecting part and the second connecting part are on the same plane, and the air outlet direction of the air blowing part is downwards arranged for drying hands; in the second state, the first connecting part and the second connecting part are vertically arranged, and the air outlet direction of the air blowing part is horizontally arranged for warming and/or drying; in the third state, the first connecting portion and the second connecting portion are obliquely arranged, and the air outlet direction of the air blowing portion is obliquely upwards arranged for blowing hair.

In one possible implementation, the blower includes: the shell is provided with air inlets along two sides of the length direction, and the periphery of the shell is provided with air outlets; the air duct is positioned in the shell and comprises a first channel, a second channel and a third channel which is communicated with the first channel and the second channel, the first channel and the second channel are arranged in parallel and extend along the length direction of the shell, and the second channel is provided with an air outlet nozzle which is communicated with the air outlet; the air supply assembly is arranged on the first channel; and the heating wire group is arranged in the second channel.

In one possible implementation, the end face of the third channel is configured as an inclined plane, an included angle between the inclined plane and the first channel is an obtuse angle, and an included angle between the inclined plane and the second channel is an acute angle.

In one possible implementation, a button is disposed on a side of the housing away from the air outlet, and the button is electrically connected to the main body.

In one possible implementation manner, a positioning block protrudes from one end of the rotating shaft away from the damping rotating shaft, and the second connecting portion is provided with an abutting block for abutting against the positioning block.

In one possible implementation manner, the main body part is further provided with a mounting buckle away from the blowing part, the blowing structure comprises a bracket, the mounting buckle is detachably connected with the bracket, and one end of the bracket away from the mounting buckle is bent to form a bottom plate for supporting.

In one possible implementation, the bottom plate is located at the lower end of the blowing part, and an included angle between the bottom plate and the bracket is an acute angle.

In one possible implementation manner, the mounting buckle comprises a clamping plate, wherein the clamping plate is used for clamping the bracket, and a mounting hole used for being connected with a wall is further formed in the clamping plate.

In one possible implementation, the support is provided with a yielding port for the clamping plate to extend into, and the yielding port is located at one end of the support away from the bottom plate.

In one possible implementation, the support is further provided with a hollowed-out portion.

According to the blowing structure provided by the embodiment of the application, the blowing structure comprises a main body part and a blowing part, wherein the main body part is provided with a first connecting part communicated with an inner cavity of the main body part; the air blowing part is provided with a second connecting part communicated with the inner cavity of the air blowing part, one end of the first connecting part is rotationally connected with one end of the second connecting part through a damping rotating shaft, the other end of the first connecting part is rotationally connected with the other end of the second connecting part through a rotating shaft, the rotating shaft axially penetrates through a communication hole, and the communication hole is used for communicating the inner cavity of the first connecting part with the inner cavity of the second connecting part; in the first state, the first connecting part and the second connecting part are arranged on the same plane, and the air outlet direction of the air blowing part is downwards arranged for drying hands; in the second state, the first connecting part and the second connecting part are vertically arranged, and the air outlet direction of the air blowing part is horizontally arranged for warming and/or drying; in the third state, the first connecting part and the second connecting part are obliquely arranged, and the air outlet direction of the air blowing part is obliquely upwards arranged for blowing hair. According to the application, the first connecting part is connected with the second connecting part in a rotating way, and a plurality of use scenes are provided for users through the control of the damping rotating shaft, so that one object can be used for multiple purposes, the applicability of the application is improved, the relative positions of the blowing part and the main body part can be kept inconvenient according to the selection of the users, the user is not required to continuously adjust the gesture of the hand according to the objects to be blown, and the convenience of the users is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

Fig. 1 shows a schematic structural view of a blowing structure in a first state according to an embodiment of the present application;

fig. 2 shows a schematic structural view of a blowing structure in a second state according to an embodiment of the present application;

Fig. 3 shows a schematic structural view of a blowing structure in a third state according to an embodiment of the present application;

fig. 4 shows a partial cross-sectional view of a blowing structure of an embodiment of the present application;

fig. 5 shows a partial cross-sectional view of a blower according to an embodiment of the application;

FIG. 6 illustrates a partial cross-sectional view of a wind tunnel according to an embodiment of the application;

Fig. 7 shows a schematic structural view of a rotating shaft according to an embodiment of the present application;

fig. 8 shows a schematic structural view of a stent according to an embodiment of the present application.

Reference numerals illustrate:

1. A main body portion; 11. a first connection portion; 12. a clamping plate; 2. a blowing part; 21. a second connecting portion; 211. an abutment block; 22. a housing; 221. a button; 23. an air duct; 231. a first channel; 232. a second channel; 233. a third channel; 2331. an inclined plane; 24. an air supply assembly; 25. a heating wire group; 3. damping the rotating shaft; 4. a rotating shaft; 41. a communication hole; 42. a positioning block; 5. a bracket; 51. a bottom plate; 52. a yielding port; 53. and a hollowed-out part.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

For ease of description, spatially relative terms, such as "inner," "outer," "lower," "upper," "above," "front," "rear," and the like, may be used herein to describe one element's or feature's relative positional relationship or movement to another element's or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figure experiences a position flip or a change in attitude or a change in state of motion, then the indications of these directivities correspondingly change, for example: an element described as "under" or "beneath" another element or feature would then be oriented "over" or "above" the other element or feature. Accordingly, the example term "below … …" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.

Fig. 1 shows a schematic structural view of a blower structure in a first state according to an embodiment of the present application, and fig. 2 shows a schematic structural view of a blower structure in a second state according to an embodiment of the present application. Fig. 3 shows a schematic structural view of a blowing structure in a third state according to an embodiment of the present application, and fig. 4 shows a partial cross-sectional view of the blowing structure according to an embodiment of the present application.

As shown in fig. 1 to 4, an embodiment of the present application provides a blowing structure, including a main body 1 and a blowing portion 2, where the main body 1 is provided with a first connection portion 11 communicating with an inner cavity of the main body 1; the blowing part 2 is provided with a second connecting part 21 communicated with the inner cavity of the blowing part 2, one end of the first connecting part 11 is rotationally connected with one end of the second connecting part 21 through the damping rotating shaft 3, the other end of the first connecting part 11 is rotationally connected with the other end of the second connecting part 21 through the rotating shaft 4, the rotating shaft 4 axially penetrates through a communication hole 41, and the communication hole 41 communicates the inner cavity of the first connecting part 11 with the inner cavity of the second connecting part 21.

It will be appreciated that the blowing structure comprises a main body part 1 and a blowing part 2, and that the main body part 1 may be provided with power supply, control center and/or buttons etc. The end of the main body part 1 facing away from the blowing part 2 is provided with means for connection with a wall or a bracket to support the blowing structure, and the user can mount the main body part 1 at the wall or the bracket according to his/her choice. The main body part 1 is further provided with a first connection part 11 for rotational connection with the blower part 2, the first connection part 11 being in communication with the inner cavity of the main body part 1. The blowing part 2 is provided with a second connecting part 21, the second connecting part 21 is communicated with the inner cavity of the blowing part 2, the second connecting part 21 is provided with a mounting cavity which is adapted to the first connecting part 11, and the first connecting part 11 stretches into the mounting cavity of the second connecting part 21, so that both ends of the first connecting part 11 can be rotationally connected with the second connecting part 21, and the connection stability of the first connecting part 11 and the second connecting part 21 is improved.

Wherein, the one end of first connecting portion 11 is provided with damping pivot 3, and damping pivot 3 still is connected with second connecting portion 21, and first connecting portion 11 and second connecting portion 21 rotate the time promptly, can stop in optional position, avoid blowing the structure because the gravity problem of portion 2 excessively rotates. The other end of the first connecting part 11 is rotationally connected with the other end of the second connecting part 21 through the rotating shaft 4, the rotating shaft 4 is provided with a communication hole 41, the communication hole 41 communicates the inner cavity of the first connecting part 11 with the inner cavity of the second connecting part 21, namely, the inner cavity of the blowing part 2 and the inner cavity of the main body part 1 are communicated, and the electric wire can electrically connect the blowing part 2 and the main body part 1 through the communication hole 41.

In the first state, the user can rotate the first connecting portion 11 and the second connecting portion 21, under the action of the damping rotating shaft 3, the first connecting portion 11 and the second connecting portion 21 are located on the same horizontal plane, and the air outlet direction of the air blowing portion 2 is downward, so that the user can dry hands, and the first use scene of the air blowing structure is convenient.

Under the second state, the user can rotate the first connecting part 11 and the second connecting part 21, under the action of the damping rotating shaft 3, the first connecting part 11 and the second connecting part 21 are vertically arranged, the air outlet direction of the air blowing part 2 is horizontal, and the air outlet of the air blowing part 2 is directly towards the user, so that the air blowing device can be used for warming and/or drying the body of the user, and is a second use scene of the air blowing structure.

Under the third state, the user can rotate the first connecting portion 11 and the second connecting portion 21, under the action of the damping rotating shaft 3, the first connecting portion 11 and the second connecting portion 21 are obliquely arranged, the air outlet direction of the air blowing portion 2 is obliquely upward, at this time, the included angle between the air blowing portion 2 and the main body portion 1 is 145 degrees, so that the user blows, and the air blowing portion is a third use scene of an air blowing structure.

The application provides various use scenes for users through the rotation connection of the first connecting part 11 and the second connecting part 21 and the control of the damping rotating shaft 3, so that one object can be used for multiple purposes, the applicability of the application is improved, the relative positions of the blowing part 2 and the main body part 1 can be kept inconvenient according to the selection of the users, the user is not required to continuously adjust the gesture of the hands of the users according to the objects to be blown, and the convenience of the users is improved.

In some alternative embodiments, the blowing structure further includes a driving member (not shown in the figures) and a remote controller (not shown in the figures), wherein an output end of the driving member is connected to the rotating shaft 4, and the driving member may be a motor and is fixed at the blowing portion 2 or the main body portion 1. The remote controller is in signal connection with the driving piece, and the remote controller can set different buttons according to the first state, the second state and the third state, and a user can control the opening of the driving piece by operating the remote controller, so that the different states of the blowing structure are automatically controlled, and convenience of the user is improved.

Referring to fig. 5 and 6, fig. 5 shows a partial cross-sectional view of a blower portion according to an embodiment of the present application, and fig. 6 shows a partial cross-sectional view of an air duct according to an embodiment of the present application.

In some alternative embodiments, the air blowing part 2 includes a housing 22, an air duct 23, an air supply assembly 24, and a heating wire set 25, wherein air inlets are provided on two sides of the housing 22 along the length direction, and air outlets are provided on the peripheral side of the housing 22; the air duct 23 is located in the shell 22, the air duct 23 comprises a first channel 231, a second channel 232 and a third channel 233 used for communicating the first channel 231 and the second channel 232, the first channel 231 and the second channel 232 are arranged in parallel and extend along the length direction of the shell 22, and the second channel 232 is provided with an air outlet nozzle communicated with the air outlet; the air supply assembly 24 is disposed in the first channel 231; the heating wire set 25 is disposed in the second channel 232.

The blower 2 includes a casing 22, the casing 22 has an inner cavity, the cross section of the casing 22 is elliptical, two sides of the casing 22 extending in all directions are provided with air inlets, which can provide air sources for the air supply assembly 24, and the periphery of the casing 22 is also provided with air outlets.

The air duct 23 is disposed in the inner cavity of the housing 22, the air duct 23 includes a first channel 231, a second channel 232, and a third channel 233, the first channel 231 and the second channel 232 are disposed in parallel, and the third channel 233 is disposed in a bent manner and is used for connecting the first channel 231 and the second channel 232. One end of the second channel 232, which is away from the first channel 231, is provided with an air nozzle, and the air nozzle is used for communicating with an air outlet.

The air supply assembly 24 includes a motor and a fan, the air supply assembly 24 is disposed at one end of the first channel 231 far away from the third channel 233, the air supply assembly 24 can convey air of the air inlet into the first channel 231, then the air is conveyed into the third channel 233 from the first channel 231, the third channel 233 is conveyed into the second channel 232, and then the second channel 232 is conveyed to the air outlet through the air blowing nozzle, so that the air blowing function of the air blowing structure is realized.

The heating wire set 25 is disposed in the second channel 232, and when the flowing air is conveyed to the second channel 232, the heating wire set 25 can heat the flowing air, so that the air blown out from the air outlet is hot air.

The first channel 231 and the second channel 232 are arranged in parallel, and compared with the coaxial arrangement of the first channel 231 and the second channel 232, the volume of the air blowing part 2 is reduced, and the air blowing part is more convenient for a user to carry or store.

When in the first state, the first channel 231 and the second channel 232 are arranged along the height direction of the main body part 1, and compared with the first channel 231 and the second channel 232 which are positioned on the horizontal plane, the volume of the horizontal plane occupied by the blowing structure in the first state is further reduced.

In some alternative embodiments, the end surface of the third channel 233 is inclined to the plane 2331, the inclined plane 2331 forms an obtuse angle with the first channel 231, and the inclined plane 2331 forms an acute angle with the second channel 232. The inclined plane 2331 may guide air when flowing through the third channel 233, and the inclined plane 2331 is set with respect to the arc surface, so that air flows through the third channel 233 more rapidly, and a small portion of air is prevented from being stopped at the arc surface.

Referring to fig. 1-3, in some alternative embodiments, a button 221 is provided on a side of the housing 22 remote from the air outlet, the button 221 being electrically connected to the main body 1. The button 221 is provided at a side of the housing 22 facing away from the air outlet for user operation.

Referring to fig. 4 and 7, fig. 7 shows a schematic structural view of a rotating shaft according to an embodiment of the present application. In some alternative embodiments, the end of the rotation shaft 4 away from the damping rotation shaft 3 protrudes with a positioning block 42, and the second connection portion 21 is provided with an abutment block 211 for abutting against the positioning block 42.

When the first connecting portion 11 and the second connecting portion 21 rotate to the third state, the positioning block 42 abuts against the abutting block 211, so as to avoid excessive rotation of the first connecting portion 11 and the second connecting portion 21 and influence on the blowing effect.

Referring to fig. 1-3 and 8, fig. 8 shows a schematic structural diagram of a bracket according to an embodiment of the present application. In some alternative embodiments, the main body part 1 is further provided with a mounting buckle facing away from the blowing part 2, the blowing structure comprises a bracket 5, the mounting buckle is detachably connected with the bracket 5, and one end of the bracket 5, which is far away from the mounting buckle, is bent to form a bottom plate 51 for supporting.

The main part 1 deviates from the one end of portion of blowing 2 and is provided with the installation knot, and installation knot and main part 1 can adopt integrated into one piece's mode. The mounting buckle is detachably connected with the bracket 5 and can be connected in a manner of plugging, falcon connection, riveting or bolt connection and the like.

The end of the bracket 5 away from the mounting buckle is bent to form a bottom plate 51 for supporting, and the bottom plate 51 can be placed on a table top, a cabinet surface or the ground, thereby supporting the blower 2 and the main body 1.

In some alternative embodiments, the bottom plate 51 is located at the lower end of the blower 2, and the bottom plate 51 forms an acute angle with the support 5. The bottom plate 51 is located the lower extreme of portion of blowing 2, for the bottom plate 51 is located the side of support 5 facing away from portion of blowing 2 lower extreme, has reduced the whole volume of structure of blowing, is convenient for the user more and places.

The included angle between the bottom plate 51 and the bracket 5 is an acute angle, so that the gravity center of the application is positioned at one side of the bracket 5 facing the blowing part 2, and the bottom plate 51 is positioned below the blowing part 2, thereby the supporting effect of the bracket 5 is better, and the probability of the bracket 5 skewing is reduced.

In some alternative embodiments, the mounting clasp comprises a clamping plate 12, the clamping plate 12 being adapted to clamp the bracket 5, the clamping plate 12 further being provided with mounting holes for connection to a wall.

The mounting holes are threaded holes through which the clamping plate 12 can be connected to a wall. One end of the clamping plate 12 is connected to the main body 1, and the other end is deformable. The clamping plate 12 clamps the bracket 5 with the main body part 1, so that the mounting buckle is detachably connected with the bracket 5.

In some alternative embodiments, the bracket 5 is provided with a relief opening 52 for the clamping plate 12 to extend into, the relief opening 52 being located at an end of the bracket 5 remote from the bottom plate 51.

In order to improve the stability of the clamping plate 12 and the main body 1 clamping support 5, one end of the support 5 away from the bottom plate 51 of the support 5 may be provided with a yielding port 52 adapted to the clamping plate 12, and the clamping plate 12 is clamped at the yielding port 52, so as to avoid the clamping plate 12 from being separated from the support 5.

In some alternative embodiments, the bracket 5 is further provided with a hollowed-out portion 53. The hollowed-out part 53 can reduce the gravity of the bracket 5 and save the cost.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A blowing structure, comprising:

a main body part provided with a first connecting part communicated with the inner cavity of the main body part;

The air blowing part is provided with a second connecting part communicated with the inner cavity of the air blowing part, one end of the first connecting part is rotationally connected with one end of the second connecting part through a damping rotating shaft, the other end of the first connecting part is rotationally connected with the other end of the second connecting part through a rotating shaft, the rotating shaft axially penetrates through a communication hole, and the communication hole is used for communicating the inner cavity of the first connecting part with the inner cavity of the second connecting part;

In the first state, the first connecting part and the second connecting part are on the same plane, and the air outlet direction of the air blowing part is downwards arranged for drying hands;

In the second state, the first connecting part and the second connecting part are vertically arranged, and the air outlet direction of the air blowing part is horizontally arranged for warming and/or drying;

In the third state, the first connecting portion and the second connecting portion are obliquely arranged, and the air outlet direction of the air blowing portion is obliquely upwards arranged for blowing hair.

2. A blowing structure according to claim 1, wherein the blowing portion includes:

The shell is provided with air inlets along two sides of the length direction, and the periphery of the shell is provided with air outlets;

the air duct is positioned in the shell and comprises a first channel, a second channel and a third channel which is communicated with the first channel and the second channel, the first channel and the second channel are arranged in parallel and extend along the length direction of the shell, and the second channel is provided with an air outlet nozzle which is communicated with the air outlet;

The air supply assembly is arranged on the first channel;

and the heating wire group is arranged in the second channel.

3. A blowing structure according to claim 2, wherein the end face of the third channel is provided as an inclined plane, the inclined plane having an obtuse angle with the first channel, and the inclined plane having an acute angle with the second channel.

4. A blowing structure according to claim 2, wherein a button is provided on a side of the housing remote from the air outlet, the button being electrically connected to the main body portion.

5. The blowing structure according to claim 1, wherein a positioning block protrudes from an end of the rotation shaft away from the damping rotation shaft, and the second connection portion is provided with an abutment block for abutting against the positioning block.

6. The blowing structure according to claim 1, wherein the main body portion is further provided with a mounting buckle facing away from the blowing portion, the blowing structure includes a bracket detachably connected to the mounting buckle, and a bottom plate for supporting is formed by bending an end of the bracket facing away from the mounting buckle.

7. A blowing structure according to claim 6 wherein the base plate is located at the lower end of the blower portion, the base plate being at an acute angle to the support.

8. The blowing structure of claim 6, wherein the mounting buckle includes a clamping plate for clamping the bracket, and a mounting hole for connecting with a wall is further provided at the clamping plate.

9. The blowing structure according to claim 8, wherein the bracket is provided with a relief opening for the clamping plate to project into, the relief opening being located at an end of the bracket remote from the bottom plate.

10. The blowing structure of claim 6, wherein the bracket is further provided with a hollowed-out portion.