Blowing and sucking fan

Abstract

The utility model belongs to the field of electric tools, and discloses a blowing and suction fan which comprises a two-half shell, a brush blowing nozzle is arranged at the front end of the shell in a sleeved mode, and the brush blowing nozzle is composed of a blowing nozzle body, a dust collection cavity and a shell connecting part. A positioning convex strip is arranged on the shell I, and a positioning groove is formed in the shell II; a clamping spring is arranged on the inner side of a limiting protrusion at the head of the shell, an assembling step is arranged at the tail of the shell, a fixing ring is sleeved on the assembling step, and an integrally-formed handle sleeve is sleeved on a grab handle of the shell. A dust collection cavity of the brush blowing nozzle is also of a two-half type, the upper half portion of the dust collection cavity, the blowing nozzle and the shell connecting portion are integrally formed, a clamping groove I is formed in the cavity wall of the connecting position of the upper half portion, and a clamping buckle I is arranged on the connecting edge of the lower half portion. The shell is assembled in a three-point positioning mode and does not need to be tightened and fixed through screws, it is guaranteed that the shell is not damaged in the assembling process, and the assembling quality is improved. The upper half portion of the dust collection cavity is integrally formed on the shell, the upper half portion and the lower half portion of the dust collection cavity can be connected through only one buckle structure, and assembling is very convenient.

Description

Technical Field

[0001] The utility model belongs to the field of electric tools, in particular to a blowing and suction fan. Background Art

[0002] The suction fan is mainly composed of a motor, fan blades, housing, air inlet filter, and nozzle. The motor rotates, driving the fan blades to rotate at high speed. The filtered clean air enters the suction fan and generates a certain pressure before being blown out from the nozzle. The housing of the existing suction fan needs to be tightened and fixed by screws. Improper force during tightening can easily cause cracks in the housing, or the screws may be damaged due to the wrong tightening angle.

[0003] The handheld integrated blowing and suction dust collector disclosed in the relevant reference CN219229734U has two main body shells, which are symmetrically distributed and connected to each other, but the dust storage shell bayonet is inserted into the outer part of the air suction port, the outer part of the air suction port is snap-connected with the inner part of the air suction port, and the inner part of the air suction port is snap-connected to one side of the main body shell, so the assembly of the dust storage shell is relatively complicated. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a blower-suction fan whose shell is assembled by three-point positioning, has a relatively simple structure, does not need to be tightened and fixed with screws, ensures that the shell is not damaged during assembly, and improves the assembly quality.

[0005] In order to solve the above technical problems, the utility model provides a blowing and suction fan, including a shell, a brush nozzle is sleeved on the front end of the shell, and the brush nozzle is composed of a nozzle, a dust suction chamber and a shell connecting part; the shell is divided into two halves, one half is shell I, and the other half is shell II, positioning convex strips are arranged on the edges where shell I is connected, and positioning grooves are arranged on the edges where shell II is connected; a retaining spring is arranged on the inner side of a limiting protrusion at the head of the shell, an assembly step is arranged at the rear of the shell, a fixing ring is sleeved on the assembly step, a handle cover is sleeved on the handle of the shell, and the handle cover is an integrated structure; the dust suction chamber of the brush nozzle is also divided into two halves; the upper half of the dust suction chamber and the nozzle and the shell connecting part are integrally formed, a card groove I is arranged on the cavity wall where the upper halves are connected, and a buckle I is arranged on the edge where the lower halves are connected.

[0006] By adopting the above technical solution, the head of the shell is fastened with a retaining spring, the tail is tightened by a fixing ring that covers the assembly step, the handle is directly wrapped with an integrally formed handle sleeve, and the shell is assembled by three-point positioning, and no screws are required to tighten and fix it, ensuring that the shell is not damaged during assembly, improving assembly quality, effectively reducing the number of defective products, and improving production efficiency. The upper half of the dust chamber is integrally formed on the shell, and the upper and lower halves of the dust chamber can be connected with only a buckle structure. The connection method is simple and the assembly is very convenient.

[0007] Preferably, the shell connecting portion of the brush blowing nozzle is in the shape of a circular ring, and has an annular groove therein for accommodating the limiting protrusion; the limiting protrusion is pressed against the inner wall of the annular groove.

[0008] By adopting the above technical solution, the shell connecting part of the brush nozzle can rotate around the limiting protrusion along with the annular groove, thereby changing the blowing angle of the brush nozzle, making it easier for the wind to be concentrated on a specific required position, making the user more comfortable during operation.

[0009] Preferably, a buckle II is further provided on the edges where the shells I are connected, and a slot II is further provided on the edges where the shells II are connected.

[0010] By adopting the above technical solution, the two half shells are fastened again by means of buckle II and slot II, which improves the fastness of the shell connection while saving production costs. The assembly is simple, and only the buckle II needs to be aligned with the slot II.

[0011] Preferably, a guide mounting column I is provided at the front of shell I, and a limit column I cooperating with the guide mounting column I is provided at the front of shell II; a blowing guide piece is provided on the guide mounting column I and the limit column I, and the blowing guide piece is a two-half-jointed structure.

[0012] By adopting the above technical solution, half of the blowing guide is installed on the shell I, and the other half is installed on the shell II. The two halves are combined to form a ventilated cavity.

[0013] Preferably, a guide installation column II is provided at the rear of shell I, and a limit column II cooperating with the guide installation column II is provided at the rear of shell II; an air suction guide piece is provided on the guide installation column II and the limit column II, and the air suction guide piece is a two-half-jointed structure.

[0014] By adopting the above technical solution, half of the suction guide is installed on the shell I, and the other half is installed on the shell II, and the two halves are combined to form a ventilated cavity. The ventilation structure of the shell is optimized by the blowing guide and the suction guide, and the air flow state is improved, so that the blowing and suction fan can work more smoothly.

[0015] Preferably, a long blowing nozzle is sleeved on the front end of the shell, and the shell connecting portion of the long blowing nozzle is annular, and has an annular groove for accommodating the limiting protrusion; the limiting protrusion is pressed against the inner wall of the annular groove.

[0016] By adopting the above technical solution, the long blowing nozzle is used to form a smaller air outlet for directional blowing.

[0017] Preferably, a coarse blowing nozzle is sleeved on the front end of the shell, and an annular groove for accommodating the limiting protrusion is formed therein; the limiting protrusion is pressed against the inner wall of the annular groove.

[0018] By adopting the above technical solution, the airflow is diffused through the coarse blowing nozzle, so that the blown airflow is relatively soft.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. The shell head of the utility model is fastened with a retaining spring, and the two shell heads are easily fixed together through the elasticity and ductility of the retaining spring. The tail is tightened in the form of a fixing ring covering the assembly step, and the handle is directly wrapped with an integrally formed handle sleeve. The shell is assembled by three-point positioning, and the structure is relatively simple. It is no longer necessary to tighten and fix it with screws, ensuring that the shell is not damaged during assembly, improving the assembly quality, effectively reducing the number of defective products, and improving production efficiency.

[0021] 2. The upper half of the dust suction chamber of the utility model is integrally formed on the shell, and the upper and lower halves of the dust suction chamber can be connected by only one buckle structure, the connection method is simple, and the assembly is very convenient.

[0022] 3. The two half shells of the utility model are fastened again by snap-fitting II and slot II, which improves the fastness of the shell connection and saves production costs. The assembly is simple, and only the snap-fit ​​II needs to be aligned with the slot II. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is an exploded view of the utility model;

[0024] Figure 2 For this utility model Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 This is a structural diagram of the brush mouthpiece of the utility model;

[0026] Figure 4 This is a cross-sectional view of the brush mouthpiece of the utility model;

[0027] Figure 5 This is an embodiment of the utility model, and a long mouthpiece is set on the front end of the shell;

[0028] Figure 6 for Figure 5 This is an explosion diagram of an embodiment of the utility model, in which a rough blowing nozzle is sleeved on the front end of the shell.

[0029] Figure numbers: 1. Shell, 2. Brush nozzle, 3. Nozzle, 4. Dust suction chamber, 5. Shell connection part, 6. Shell I, 7. Shell II, 8. Positioning convex strip, 9. Limiting protrusion, 10. Fixing ring, 11. Handle, 12. Slot I, 13. Buckle I, 14. Handle cover, 15. Retaining spring, 16. Buckle II, 17. Guide installation column I, 18. Guide installation column II, 19. Blowing guide, 20. Suction guide, 21. Assembly step, 22. Long nozzle, 23. Coarse nozzle, 24. Annular groove. DETAILED DESCRIPTION

[0030] like Figure 1 As shown, the blower / suction fan has air outlet / blowing at the front end and air inlet / suction at the rear end, and includes a shell 1, and a brush nozzle 2 is sleeved at the front end of the shell 1. The shell 1 is in two halves, one half is the shell Ⅰ6, and the other half is the shell Ⅱ7. A positioning convex strip 8 is provided on the edge where the shell Ⅰ6 and the other half are provided on the edge where the shell Ⅱ7 are connected, which are not shown in the figure. A retaining spring 15 is provided inside the limiting protrusion 9 at the head of the shell 1, which is not shown in the figure. An assembly step 21 is provided at the rear end of the shell 1, and a fixing ring 10 is sleeved on the assembly step 21. A handle sleeve 14 is sleeved on the handle 11 of the shell 1, and the handle sleeve 14 is an integrally formed structure. The head of the shell 1 of the present application is fastened with a retaining spring 15, and the two heads of the shell 1 are easily fixed together through the elasticity and ductility of the retaining spring 15. The tail is tightened by a fixing ring 10 that covers the assembly step 21, and the handle 11 is directly wrapped with an integrally formed handle sleeve 14. The shell 1 is assembled by three-point positioning, and there is no need to tighten it with screws, ensuring that the shell 1 is not damaged during assembly, and there will be no problem of screws being damaged, thereby improving the assembly quality, effectively reducing the number of defective products, and improving production efficiency.

[0031] A guide installation column Ⅰ17 is provided at the front of the shell Ⅰ6, and a cavity is provided in the guide installation column Ⅰ17. A limit column Ⅰ is provided on the inner wall of the front of the shell Ⅱ7, and a convex block that matches the cavity is provided on the limit column Ⅰ, which is not shown in the figure. The convex block is installed in the cavity for easy assembly and positioning. A blowing guide 19 is provided on the guide installation column Ⅰ17 and the limit column Ⅰ, and the blowing guide 19 is a two-half-jointed structure. One half of the blowing guide 19 is installed on the shell Ⅰ6, and the other half is installed on the shell Ⅱ7. When the two halves are combined, a ventilated cavity is formed, with a small left opening and a large right opening.

[0032] A guide mounting column Ⅱ18 is provided at the rear of the shell Ⅰ6, and a cavity is also provided in the guide mounting column Ⅱ18. A limit column Ⅱ is provided on the inner wall at the rear of the shell Ⅱ7. A protrusion that cooperates with the cavity is provided on the limit column Ⅱ, which is not shown in the figure. The protrusion is installed in the cavity for easy assembly and positioning. A suction guide 20 is provided on the guide mounting column Ⅱ18 and the limit column Ⅱ, and the suction guide 20 is a two-half structure. Half of the suction guide 20 is installed on the shell Ⅰ6, and the other half is installed on the shell Ⅱ7. When the two halves are combined, a ventilated cavity is formed, with a large left opening and a small right opening. The air inlet and outlet of the blowing guide 19, as well as the air inlet and outlet of the suction guide 20, are all on the same axis. The present application optimizes the ventilation structure of the shell 1 through the blowing guide 19 and the suction guide 20, improves the air flow state, and makes the blowing and suction fan work more smoothly.

[0033] like Figure 2As shown, a buckle II 16 is provided on the edge where the shells I and 6 are connected, and a slot II is provided on the edge where the shells II and 7 are connected. The two half shells are fastened again by the buckle II 16 and the slot II, which improves the fastness of the shell connection and saves production costs. The assembly is simple, and the buckle II 16 only needs to be aligned with the slot II.

[0034] like Figure 3 As shown, the brush nozzle 2 is composed of a nozzle 3, a dust suction chamber 4 and a shell connecting portion 5. The dust suction chamber 4 of the brush nozzle 2 is also a two-half type, and the upper half of the dust suction chamber 4, the nozzle 3 and the shell connecting portion 5 are integrally formed, and a card slot Ⅰ12 is provided on the cavity wall where the upper half is connected, and a buckle Ⅰ13 is provided on the edge where the lower half is connected. The upper half of the dust suction chamber 4 is integrally formed on the shell 1, and the upper and lower halves of the dust suction chamber 4 can be connected with only a buckle structure, the connection method is simple, and the assembly is very convenient.

[0035] like Figure 4 As shown, the shell connecting part 5 of the brush blowing nozzle 2 is annular, and has an annular groove 24 for accommodating the limiting protrusion 9; the limiting protrusion 9 is pressed against the inner wall of the annular groove 24. The shell connecting part 5 of the brush blowing nozzle 2 can rotate around the limiting protrusion 9 along with the annular groove 24, changing the blowing angle of the brush blowing nozzle 2, so that the wind is concentrated on a specific desired position, making the user more comfortable when operating.

[0036] like Figure 5 As shown, in another embodiment, a long blowing nozzle 22 is sleeved on the front end of the housing 1, and the housing connecting portion of the long blowing nozzle is annular, and has an annular groove for accommodating the limiting protrusion 9; the limiting protrusion 9 is pressed against the inner wall of the annular groove. The present application uses the long blowing nozzle 22 to form a smaller air outlet for directional blowing.

[0037] like Figure 6 As shown, in another embodiment, a coarse blowing nozzle 23 is sleeved on the front end of the housing 1, and an annular groove is provided inside to accommodate the limiting protrusion 9; the limiting protrusion 9 is pressed against the inner wall of the annular groove. The present application diffuses the airflow through the coarse blowing nozzle 23, making the blown airflow softer.

[0038] During assembly, the two halves of the blowing guide 19 are respectively inserted on the guide installation column Ⅰ17 and the limit column Ⅰ, and the two halves of the suction guide 20 are respectively inserted on the guide installation column Ⅱ18 and the limit column Ⅱ. Align the protrusions and the cavity, and snap the shell 1. When snapping the shell 1, the positioning convex strip 8 of the shell Ⅰ6 is embedded in the positioning groove of the shell Ⅱ7, and the buckle Ⅱ16 is snapped into the slot Ⅱ. After the snapping is completed, open the clamping spring 15 and install it on the inner side of the limit protrusion 9, the fixing ring 10 is clamped on the assembly step 21, and then the handle cover 14 is set on the handle 11 to complete the assembly. Finally, install the brush mouthpiece 2 and it can be used.

[0039] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the principles, the embodiments of the present invention may be deformed or modified in any way.

Claims

1. A blowing and suction fan, comprising a housing (1), wherein the housing (1) is divided into two halves, one half being housing I (6) and the other half being housing II (7), a brush blowing nozzle (2) being sleeved at the front end of the housing (1), characterized in that: The brush nozzle (2) is composed of a nozzle (3), a dust suction chamber (4) and a shell connecting portion (5); a positioning convex strip (8) is provided on the edges where the shells I (6) are connected, and a positioning groove is provided on the edges where the shells II (7) are connected; a retaining spring (15) is provided on the inner side of the limiting protrusion (9) at the head of the shell (1); an assembly step (21) is provided at the rear of the shell (1); a fixing ring (10) is sleeved on the assembly step (21); a handle sleeve (14) is sleeved on the handle (11) of the shell (1), and the handle sleeve (14) is an integrally formed structure; the dust suction chamber (4) of the brush nozzle (2) is also a two-half type; the upper half of the dust suction chamber (4) and the nozzle (3) and the shell connecting portion (5) are integrally formed, a slot I (12) is provided on the cavity wall where the upper half is connected, and a buckle I (13) is provided on the edge where the lower half is connected.

2. The blowing and suction fan according to claim 1, characterized in that: The shell connecting portion (5) of the brush blowing nozzle (2) is annular and has an annular groove (24) therein for accommodating the limiting protrusion (9); the limiting protrusion (9) is pressed against the inner wall of the annular groove (24).

3. The blowing and suction fan according to claim 1, characterized in that: A buckle II (16) is also provided on the edges where the shells I (6) are connected, and a slot II is also provided on the edges where the shells II (7) are connected.

4. The blowing and suction fan according to claim 1, characterized in that: A guide installation column I (17) is arranged at the front of the shell body I (6), and a limit column I matched with the guide installation column I (17) is arranged at the front of the shell body II (7); a blowing guide member (19) is arranged on the guide installation column I (17) and the limit column I, and the blowing guide member (19) is a two-half-jointed structure.

5. The blowing and suction fan according to claim 1, characterized in that: A guide installation column II (18) is arranged at the rear of the shell body I (6), and a limit column II cooperating with the guide installation column II (18) is arranged at the rear of the shell body II (7); an air suction guide member (20) is arranged on the guide installation column II (18) and the limit column II, and the air suction guide member (20) is a two-half-jointed structure.

6. The blowing and suction fan according to claim 1, characterized in that: A long mouthpiece (22) is sleeved on the front end of the shell (1); the shell connecting portion of the long mouthpiece is annular and has an annular groove therein for accommodating a limiting protrusion (9); the limiting protrusion (9) is pressed against the inner wall of the annular groove.

7. The blowing and suction fan according to claim 1, characterized in that: A coarse blowing nozzle (23) is sleeved on the front end of the housing (1), and an annular groove for accommodating a limiting protrusion (9) is provided therein; the limiting protrusion (9) is pressed tightly against the inner wall of the annular groove.

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