CN111536061A - Hair-dryer of easy assembly - Google Patents

Abstract

The invention discloses an easy-to-assemble hair dryer, comprising a cylinder body, a bearing cylinder and an impeller. The cylinder body is hollow inside and open at both ends to form an air inlet and an air outlet respectively; the bearing cylinder is the same as the cylinder body. The shaft is arranged at intervals to form an annular air duct between the two; the impeller is located near the air inlet; wherein, the bearing cylinder is hollow inside and open at both ends, and the impeller includes an impeller mounting part and a fixed connection At least two impeller blades on the impeller mounting part, at least two connecting ribs for connecting the cylinder body and the bearing cylinder are circumferentially arranged in the annular air duct, and the connecting ribs are in the circumferential direction of the bearing cylinder are arranged radially, and the connecting ribs are substantially parallel to the axis of the barrel. According to the present invention, the structure is compact, and the split structure design greatly reduces the structural complexity of the parts, reduces the processing cost of the parts, and at the same time improves the convenience of installation and maintenance and replacement.

Description

An easy-to-assemble hair dryer

technical field

The invention relates to the field of hair dryers, in particular to an easy-to-assemble hair dryer.

Background technique

In the field of hair dryers, it is well known to use impellers of different structures to achieve intake and discharge of airflow. In the process of researching and realizing the inhalation and ejection of airflow, the inventor found that the blower in the prior art has at least the following problems:

The structure is complex, and many parts are made of one-piece injection molding, not only the processing cost is too high, the assembly process is complicated, and it is difficult to replace after damage.

In view of this, it is necessary to develop an easy-to-assemble hair dryer to solve the above problems.

SUMMARY OF THE INVENTION

In view of the deficiencies in the prior art, the main purpose of the present invention is to provide an easy-to-assemble blower with a compact structure. It also reduces the processing cost, and also improves the convenience of installation and maintenance and replacement.

In order to achieve the above objects and other advantages according to the present invention, an easy-to-assemble hair dryer is provided, comprising a barrel, a bearing barrel, and an impeller, wherein the barrel is hollow inside and open at both ends to form an air inlet and an air outlet, respectively; The bearing cylinder is coaxial with the cylinder body and is spaced apart to form an annular air channel therebetween; the impeller is located near the air inlet;

The bearing cylinder is hollow inside and open at both ends, the impeller includes an impeller mounting portion and at least two impeller blades fixed on the impeller mounting portion, and at least two impeller blades are arranged in the annular air duct. A connecting rib for connecting the cylinder body and the bearing cylinder is arranged radially in the circumferential direction of the bearing cylinder, and the connecting rib is substantially parallel to the axis of the cylinder body.

Optionally, the impeller blades are arranged in a radial spiral in the circumferential direction of the impeller mounting portion.

Optionally, a flow guide assembly is sleeved on the bearing cylinder, and the impeller and the flow guide assembly are sequentially arranged in the bearing cylinder along the jetting direction of the airflow, wherein the flow guide assembly includes an annular flow guide. The installation part and at least two guide vanes fixed on the guide installation part, the guide vanes are arranged in a radial spiral in the circumferential direction of the guide installation part, and the helical direction of the impeller blades is the same as that of the guide The helical directions of the flow vanes are opposite to each other.

Optionally, the guide vanes include:

a deflection portion at an angle α with the axis of the barrel; and

an extension substantially parallel to the axis of the barrel,

Wherein, the deflecting portion and the extending portion are integrally combined with a smooth transition between the two.

Optionally, an annular butting groove is formed on the end surface of the impeller mounting portion opposite to the bearing cylinder, and the impeller is butted with the end of the bearing cylinder through the butting groove and the end is subjected to Closed to prevent foreign matter from entering the inside of the bearing cartridge.

Optionally, the bearing cylinder includes a first receiving section, a second receiving section and a fixing section that are connected in sequence along the jetting direction of the airflow, and the impeller is connected to the first receiving section through the butting groove, so The flow guide assembly is sleeved on the second receiving section through the flow guide mounting portion.

Optionally, the outer diameters of the first receiving segment, the second receiving segment, and the fixing segment are sequentially increased segment by segment to form a step portion between the two connected segments.

Optionally, the step portion includes:

a first step portion formed at the junction of the first receiving section and the second receiving section; and

a second step portion formed at the junction of the second receiving section and the fixing section,

Wherein, at least two inwardly protruding snap terminals are formed on the inner side of the opposite end of the guide mounting portion and the impeller, and at least two snap slots are formed on the end surface of the first step portion. When the flow guide assembly is sleeved on the second receiving section through the flow guide mounting portion, each of the snap terminals is inserted into a corresponding snap slot to realize the circumferential limit of the flow guide assembly.

Optionally, a motor assembly is also included, and the motor assembly includes:

stator; and

a rotor arranged in the bearing cylinder,

Wherein, the power output shaft of the rotor is connected with the impeller mounting part, and the impeller mounting part is suspended under the support of the power output shaft but not separated from the end of the bearing cylinder.

Optionally, the impeller and the flow guide assembly are spaced apart in the axial direction.

One of the above technical solutions has the following advantages or beneficial effects: due to its compact structure, through the split structure design, the structural complexity of the parts is greatly reduced, the processing cost of the parts is reduced, and the installation cost is also improved. Ease of maintenance and replacement.

Another technical solution in the above technical solutions has the following advantages or beneficial effects: because it isolates the power output shaft of the motor from the airflow by improving the impeller, thereby preventing foreign matter from entering the motor bearing assembly or wrapping around the power output shaft of the motor On the other hand, it can prevent the efficiency of the motor from being reduced due to the entanglement of foreign objects, and also avoid potential safety hazards such as the corresponding motor failure.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present invention, rather than limit the present invention. in:

1 is a perspective view of an easy-to-assemble hair dryer according to an embodiment of the present invention;

FIG. 2 is an exploded view of an easy-to-assemble hair dryer according to an embodiment of the present invention;

3 is an axial cross-sectional view of an easy-to-assemble hair dryer according to an embodiment of the present invention;

4 is an axial cross-sectional view of the easy-to-assemble hair dryer according to an embodiment of the present invention with the motor assembly hidden;

5 is an axial cross-sectional view of the matching between the barrel and the bearing barrel in the easy-to-assemble hair dryer according to an embodiment of the present invention;

6 is an axial cross-sectional view of an impeller in an easy-to-assemble hair dryer according to an embodiment of the present invention;

7 is an axial cross-sectional view of an impeller in an easy-to-assemble hair dryer according to an embodiment of the present invention;

FIG. 8 is a front view of the easy-to-assemble hair dryer according to an embodiment of the present invention after the barrel is hidden;

FIG. 9 is a perspective view of the easy-to-assemble hair dryer according to an embodiment of the present invention after the barrel is hidden.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the drawings, the shapes and dimensions may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to refer to the same or like parts.

Unless otherwise defined, technical or scientific terms used herein should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first", "second" and similar terms used in the description of the patent application and the claims of the present invention do not denote any order, quantity or importance, but are only used to distinguish different components. Likewise, words such as "a," "an," or "the" do not denote a limitation of quantity, but rather denote the presence of at least one. Words like "include" or "include" mean that the elements or items appearing before "including" or "including" cover the elements or items listed after "including" or "including" and their equivalents, and do not exclude other component or object. "Up", "Down", "Left", "Right", etc. are only used to represent the relative positional relationship, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc. are defined relative to the configurations shown in the various figures. , in particular, "height" corresponds to the size from top to bottom, "width" corresponds to the size from left to right, "depth" corresponds to the size from front to back, they are relative concepts, so it is possible to These or other orientations should not be construed as limiting terms because they vary accordingly in different positions and different usage states.

Terms referring to attachment, coupling, etc. (eg, "connected" and "attached") refer to the fixed or attached relationship, as well as the movable or rigid attachment or relationship of these structures to each other, directly or indirectly, through intervening structures, unless The other way is explicitly stated.

1 and 2, it can be seen that the easy-to-assemble hair dryer 1 includes:

The inner hollow cylinder 11 is open at both ends to form the air inlet 112 and the air outlet 113 respectively;

a bearing cylinder 14 disposed in the cylinder body 11, which is coaxial with the cylinder body 11 and spaced apart to form an annular air duct 17 therebetween; and

The impeller 12 that is opposite to the end of the bearing cylinder 14 is located near the air inlet 112;

The bearing cylinder 14 is hollow inside and open at both ends. The impeller 12 includes an impeller mounting portion 122 and at least two impeller blades 121 fixed on the impeller mounting portion 122 . The impeller mounting portion 122 is connected to the impeller mounting portion 122 . An annular butting groove 123 is formed on the opposite end surface of the bearing cylinder 14 , and the impeller 12 is abutted with the end of the bearing cylinder 14 through the abutting groove 123 and the end is closed to prevent foreign matter from entering. Inside the bearing cartridge 14 . Referring to FIG. 1 , the airflow is driven by the impeller 12 and enters the annular air duct 17 from the air inlet 112 in the direction of arrow A and finally leaves the annular air duct 17 through the air outlet 113 . 3 and 4, it can be seen that the end of the bearing cylinder 14 is at least partially inserted into the butt groove 123, thereby dividing the butt groove 123 into an outer channel 1231 on the outer side and an inner channel 1232 on the inner side, and the air flow enters the bearing cylinder. The inside of 14 will pass through the outer channel 1231 and the inner channel 1232 in turn. Since the advancing direction of the airflow carrying foreign objects is opposite to the advancing direction of the airflow in the outer channel 1231, this makes the airflow to enter the bearing through the outer channel 1231 and the inner channel 1232 in turn. The inside of the cylinder 14 becomes very difficult, which effectively prevents foreign objects from entering the inside of the bearing cylinder 14 from the structure, that is, prevents foreign objects from entering the motor bearing assembly or winding on the power output shaft of the motor, preventing the motor from being entangled by foreign objects. The efficiency is reduced, and safety hazards such as the corresponding motor failure are avoided.

Referring to FIG. 8 and FIG. 9 , it can be noticed that the impeller blades 121 are arranged in a radial spiral in the circumferential direction of the impeller mounting portion 122 .

Further, a flow guide assembly 13 is sleeved on the bearing cylinder 14 , and the impeller 12 and the flow guide assembly 13 are sequentially arranged in the bearing cylinder 14 along the jetting direction of the airflow, wherein the flow guide assembly 13 It includes an annular guide mounting portion 132 and at least two guide vanes 131 fixed on the guide mounting portion 132. The guide vanes 131 are radially and spirally arranged in the circumferential direction of the guide mounting portion 132. The helical direction of the impeller blade 121 and the helical direction of the guide vane 131 are opposite to each other. With this structural design, the dust-carrying airflow follows a helical path surrounding the impeller blades 121 , and when the airflow reaches the end of the helical path of the impeller blades 121 , the airflow is received by the guide vanes 131 and passed by the guide vanes 131 . The deflection greatly reduces the probability of the airflow colliding with the inner wall of the cylinder 11, thereby reducing the noise generated by the collision between the air and the inner wall of the cylinder 11 on the one hand, and reducing the airflow on its forward path on the other hand. energy loss and improve fan efficiency.

Referring now to Figures 8 and 9, the guide vanes 131 are shown in greater detail. The guide vanes 131 include:

a deflection portion 131a forming an included angle α with the axis of the cylindrical body 11; and

The extension 131b substantially parallel to the axis of the cylindrical body 11,

Wherein, the deflecting portion 131a and the extending portion 131b are integrally combined with a smooth transition therebetween. Using the guide vane with this structural design, the air flow is received by the deflecting portion 131a and deflected by the deflecting portion 131a. As the air flow continues to advance along the deflecting portion 131a, the advancing direction of the air flow is guided by the extending portion 131b to be consistent with the direction of the air flow. The axes of the cylindrical body 11 are substantially parallel, thereby further reducing the probability of the airflow colliding with the inner wall of the cylindrical body 11 .

Further, the angle size of the included angle α is 30°˜75°. For example, the included angle α is 45°.

Further, the number of the impeller blades 121 is an even multiple of the number of the guide blades 131 . For example, if the number of guide vanes 131 is 6, the number of impeller vanes 121 is 12.

Referring now to Figures 4 and 5, the bearing cartridge 14 is shown in greater detail. The bearing cylinder 14 includes a first receiving section 141 , a second receiving section 142 and a fixing section 143 which are connected in sequence along the jetting direction of the airflow. The impeller 12 is connected to the first receiving section 141 through the abutting groove 123 , The flow guide assembly 13 is sleeved on the second receiving section 142 through the flow guide mounting portion 132 .

Further, the outer diameters of the first receiving segment 141 , the second receiving segment 142 and the fixing segment 143 are sequentially increased segment by segment to form a step portion between the two connected segments.

2, 4 and 5, it can be seen that the step portion includes:

a first step portion formed at the junction of the first receiving section 141 and the second receiving section 142; and

The second step portion formed at the junction of the second receiving section 142 and the fixing section 143,

Wherein, at least two inwardly protruding snap terminals 1321 are formed on the inner side of the opposite end of the guide mounting portion 132 and the impeller 12 , and at least two snap slots 1421 are formed on the end surface of the first step portion. , when the guide assembly 13 is sleeved on the second receiving section 142 through the guide mounting portion 132, each of the snap terminals 1321 is inserted into a corresponding snap slot 1421 to realize the Circumferential limit of the air guide assembly 13 .

2 and 4 , at least two connecting ribs 111 for connecting the cylinder 11 and the bearing cylinder 14 are circumferentially provided in the annular air duct 17 , and the connecting ribs 111 are in the circumferential direction of the bearing cylinder 14 . They are arranged radially, and the connecting ribs 111 are substantially parallel to the axis of the cylindrical body 11 .

Referring again to Figure 2, the easy-to-assemble hair dryer 1 further includes a motor assembly comprising:

stator 16; and

The rotor 15 arranged in the bearing cylinder 14,

The power output shaft 151 of the rotor 15 is connected to the impeller mounting portion 122 , and the impeller mounting portion 122 is suspended under the support of the power output shaft 151 but not separated from the end of the bearing cylinder 14 .

Further, the impeller 12 and the flow guide assembly 13 are spaced apart in the axial direction.

Referring to FIG. 7 , it can be seen that a gap 133 exists between the outer peripheral edge of the guide vane 131 and the inner side wall of the cylindrical body 11 . That is, the flow guide assembly 12 can be removed or installed from the bearing cylinder 14 in the axial direction, which reduces the processing complexity of the flow guide assembly 12, improves the assembly operability, and facilitates subsequent maintenance and replacement.

Further, the width of the gap 133 is 1˜10 mm. For example 3mm.

Although not shown here, it should be understood that the flow guide assembly 12 could also be provided with a locking mechanism if desired to more securely hold the flow guide assembly 12 in place on the bearing cartridge 14 . For example, a locking groove extending along the tangential direction of the second receiving section 142 is communicated at the root of the snap groove 1421 , and the guide mounting portion 132 can carry a twist locking assembly structure so that the guide assembly 12 can be twisted in the first direction in order to lock it into the position of the locking slot, and can be twisted in the opposite direction to guide the assembly 12 .

The number of apparatuses and processing scales described here are intended to simplify the description of the present invention. Applications, modifications and variations to the present invention will be apparent to those skilled in the art.

Although the embodiment of the present invention has been disclosed as above, it is not limited to the application listed in the description and the embodiment, it can be applied to various fields suitable for the present invention, and those skilled in the art can easily Additional modifications are implemented, therefore, the invention is not limited to the specific details and illustrations shown and described herein without departing from the general concept defined by the appended claims and the scope of equivalents.

Claims (10)

1. An easy-to-assemble hair dryer, comprising a barrel (11), a bearing barrel (14), and an impeller (12), characterized in that, The cylinder body (11) is hollow inside and open at both ends to form an air inlet (112) and an air outlet (113) respectively; the bearing cylinder (14) is coaxial with the cylinder body (11) and arranged at intervals to An annular air duct (17) is formed between the two; the impeller (12) is located near the air inlet (112); The bearing cylinder (14) is hollow inside and open at both ends, and the impeller (12) includes an impeller mounting portion (122) and at least two impeller blades (122) fixed on the impeller mounting portion (122). 121), the annular air duct (17) is provided with at least two connecting ribs (111) for connecting the cylinder (11) and the bearing cylinder (14), the connecting ribs (111) The bearing cylinder (14) is radially arranged in the circumferential direction, and the connecting ribs (111) are substantially parallel to the axis of the cylinder body (11). 2. The easy-to-assemble hair dryer according to claim 1, characterized in that, the impeller blades (121) are radially spirally arranged in the circumferential direction of the impeller mounting portion (122). 3. The easy-to-assemble hair dryer according to claim 2, wherein a guide assembly (13) is sleeved on the bearing cylinder (14), and the impeller (12) and the guide assembly (13) are along the The jetting directions of the airflow are sequentially set in the bearing cylinder (14), wherein the flow guide assembly (13) includes an annular flow guide mounting portion (132) and is fixed on the flow guide mounting portion (132). at least two guide vanes (131), the guide vanes (131) are radially spirally arranged in the circumferential direction of the guide mounting portion (132), and the helical direction of the impeller vanes (121) is the same as the helical direction of the The helical directions of the guide vanes (131) are opposite to each other. 4. The easy-to-assemble hair dryer of claim 3, wherein the guide vanes comprise: a deflection portion (131a) forming an angle α with the axis of the cylinder (11); and an extension (131b) substantially parallel to the axis of the cylinder (11), Wherein, the deflecting portion (131a) and the extending portion (131b) are integrally combined with a smooth transition therebetween. 5. The easy-to-assemble hair dryer according to claim 3, characterized in that, an annular abutting groove (123) is formed on the end surface of the impeller mounting portion (122) opposite to the bearing cylinder (14), so The impeller (12) is abutted with the end of the bearing cylinder (14) through the abutment groove (123) and the end is closed to prevent foreign matter from entering the interior of the bearing cylinder (14). 6. The easy-to-assemble hair dryer according to claim 5, characterized in that, the bearing cylinder (14) comprises a first receiving section (141) and a second receiving section (142) connected in sequence along the jetting direction of the airflow and a fixed section (143), the impeller (12) is connected to the first receiving section (141) through the abutting groove (123), and the diversion assembly (13) passes through the diversion mounting portion ( 132) is sleeved on the second receiving section (142). 7. The easy-to-assemble hair dryer according to claim 6, characterized in that, the outer diameters of the first receiving section (141), the second receiving section (142) and the fixing section (143) are sequentially increased section by section to A stepped portion is formed between two connected segments. 8. The easy-to-assemble hair dryer of claim 7, wherein the stepped portion comprises: a first step portion formed at the junction of the first receiving section (141) and the second receiving section (142); and a second step portion formed at the junction of the second receiving section (142) and the fixing section (143), Wherein, at least two inwardly protruding snap terminals (1321) are formed on the inner side of the opposite end of the guide mounting portion (132) and the impeller (12), and at least two inwardly protruding clip terminals (1321) are formed on the end surface of the first step portion. Two snap-fit slots (1421), when the flow guide assembly (13) is sleeved on the second receiving section (142) through the flow guide mounting portion (132), each of the snap-fit terminals (1321) is inserted into a corresponding one of the snap grooves (1421) to realize the circumferential limit of the air guide assembly (13). 9. The easy-to-assemble hair dryer of claim 1, further comprising a motor assembly comprising: a stator (16); and the rotor (15) arranged in the bearing cylinder (14), Wherein, the power output shaft (151) of the rotor (15) is connected with the impeller mounting portion (122), and the impeller mounting portion (122) is suspended but not supported by the power output shaft (151). Disengaged from the end of the bearing cartridge (14). 10. The easy-to-assemble hair dryer according to claim 9, characterized in that, the impeller (12) and the guide assembly (13) are spaced apart in the axial direction.

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