Fan blade mounting structure of range hood

Abstract

The utility model discloses a range hood fan blade mounting structure, which relates to the technical field of range hood equipment mounting and comprises an impeller, a mounting bracket is arranged in the impeller, a central pipe with a U-shaped groove in the top is arranged on the surface of the mounting bracket, and a motor output end penetrating through the mounting bracket is inserted in the central pipe from bottom to top. A pin groove matched with the U-shaped groove in the top of the center pipe is formed in the top of the output end of the motor, threaded grooves are formed in the inner wall of the pin groove and the surface of the center pipe, fixing nuts are in threaded connection with the surfaces of the threaded grooves, a pin rod is inserted into the pin groove, and a limiting protrusion is arranged at the bottom of the pin rod. The pin rod is placed in the mode that the output end of the motor is inserted into the center pipe and it is ensured that the pin groove is aligned with the U-shaped groove in the surface of the center pipe, the whole structure is installed in the mode that the center pipe and the output end of the motor are connected through the fixing nut, and the whole installation process is simple, rapid and convenient to carry out maintenance, replacement and other operations.

Description

TECHNICAL FIELD

[0001] The utility model relates to range hood equipment installation technical field especially, relates to a range hood fan blade mounting structure. BACKGROUND

[0002] The fan blade of range hood is driven to rotate by motor and generates suction, under the action of suction, the oil fume is sucked into the range hood, therefore, the fan blade can be regarded as one of the core components of range hood.

[0003] The installation mode of the fan blade is divided into the bayonet and the flat mouth, wherein the bayonet is the nut and the motor output end threaded connection, the flat mouth is the side screw and the motor output end slot fixed, the two kinds of fixed mode can effectively connect the fan blade and the motor, but the range hood needs the motor to drive the fan blade to rotate at high speed, the flat mouth connection or the bayonet connection can produce certain looseness in the long time use process, can cause the motor idling or transmission incomplete, influence use effect. UTILITY MODEL CONTENTS

[0004] In order to make up for the deficiency of prior art, the utility model aims at solving the problems existing in prior art: the existing connection mode can exist installation looseness in the long time use process, can also cause the motor idling or transmission incomplete, influence use effect.

[0005] In order to solve the prior art problems, the utility model technical scheme is as follows: including impeller, the inside of impeller is provided with mounting bracket, the surface of mounting bracket is provided with the center pipe that top is provided with U-shaped groove, the motor output end is inserted through mounting bracket from bottom to top in the inside of center pipe, the top of motor output end is provided with the pin slot that is adapted with the U-shaped groove of center pipe top, the inner wall of pin slot and the surface of center pipe are all provided with threaded groove, the threaded groove surface is connected with fixed nut, the pin rod is inserted in the inside of pin slot, and the limit protrusion is arranged at the bottom of pin rod.

[0006] Further, the pin rod is circular rod structure as a whole, and the horizontal plane is arranged at the top, the diameter of pin rod is adapted with pin slot and the U-shaped groove of center pipe top, so that the pin rod is placed in the center pipe pin slot at the same time, and the surface is completely and closely combined with the center pipe and the motor output end, and there is no activity gap.

[0007] Further, the fixed nut is the nut that the cross section is mountain-shaped and the top is closed, the inner wall center position is provided with downward extension, the surface of extension is provided with the screw thread that is adapted with the inner wall of pin slot, and the bottom of extension is abutted with the horizontal plane part of pin rod, when the fixed nut is installed on the outside of center pipe, the extension in the inside enters the motor output end along pin slot and is closely connected with the motor output end through the screw thread on the surface of extension, and the extension of fixed nut is abutted with the horizontal plane of pin rod, so that the pin rod is pressed.

[0008] Further, the bottom surface of the U-shaped groove portion of the center tube is provided with a limiting groove in a symmetrical state, and the limiting protrusion on the surface of the pin rod is inserted into the limiting groove, so that the pin rod cannot be displaced in the horizontal direction and cannot be rotated when the limiting protrusion is located in the limiting groove, and the pin rod is always located in the pin groove and the center tube.

[0009] Further, the pin rod extends to both sides of the center tube through the U-shaped groove of the center tube and the pin groove in the motor output end, and when the motor output end rotates, the pin rod is driven to rotate by the pin groove, the pin rod is clamped in the U-shaped groove to drive the center tube to rotate, and the whole impeller is driven to rotate through the mounting bracket at the bottom of the center tube.

[0010] Compared with the prior art, the advantages of the utility model are as follows:

[0011] The utility model discloses a mode that the pin rod is put in by the motor output end insertion center tube and ensure that the pin groove is aligned with the surface U-shaped groove of the center tube, and the installation of the whole structure is completed by the mode that the center tube and the motor output end are connected through the fixed nut, and after installation, the extension part of the fixed nut enters the pin groove and abuts against the pin rod, the pin rod is fixed in the center tube and the motor output end, and before the pin rod completely separates, the motor output end must drive the center tube to rotate in the rotating process, and the whole installation process is simple and fast, and when disassembling, only the fixed nut is taken down and the pin rod is taken out, so that complete separation can be realized, and the operation of maintenance and replacement is facilitated. DRAWINGS

[0012] Fig. 1 It is the whole structure schematic diagram of the utility model.

[0013] Fig. 2 It is the pin rod installation exploded schematic diagram of the utility model.

[0014] Fig. 3 It is the center tube cross section schematic diagram of the utility model.

[0015] The drawings are as follows: 1, impeller;2, mounting bracket;3, center tube;4, motor output end;5, pin groove;6, threaded groove;7, fixed nut;8, pin rod;9, limiting protrusion. Specific embodiments

[0016] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments.

[0017] As Figs. 1-3As shown, a kind of range hood fan blade mounting structure, including impeller 1, the inside of impeller 1 is provided with mounting bracket 2, the surface of mounting bracket 2 is provided with the center tube 3 of the top U-shaped slot, the inside of center tube 3 is inserted with motor output end 4 passing through mounting bracket 2 from bottom to top, the top of motor output end 4 is provided with the pin slot 5 of the U-shaped slot of the top of center tube 3 adaptation, the inner wall of pin slot 5 and the surface of center tube 3 are all provided with the thread groove 6, the surface of thread groove 6 is connected with fixed nut 7 by screw thread;

[0018] Pin rod 8 is inserted into pin slot 5, pin rod 8 is overall circular rod structure, and the top is provided with horizontal plane, the diameter of pin rod 8 is adapted with pin slot 5 and the U-shaped slot of the top of center tube 3, to ensure that pin rod 8 is placed in the pin slot 5 of center tube 3 at the same time and the surface is completely tightly combined with center tube 3 and motor output end 4, there is no activity gap, fixed nut 7 is the top closed nut of the cross section of the mountain-shaped, the inner wall center position is provided with downward extension, the surface of extension is provided with the screw thread of the inner wall adaptation of pin slot 5, and the bottom of extension is abutted with the horizontal plane part of pin rod 8;

[0019] When fixed nut 7 is installed in the outside of center tube 3, the inside extension enters motor output end 4 along pin slot 5 and is tightly connected with motor output end 4 through the screw thread of the surface of extension, and the extension of fixed nut 7 abuts against the horizontal plane of pin rod 8, pin rod 8 is pressed, pin rod 8 extends to both sides of center tube 3 through the U-shaped slot of center tube 3 and the pin slot 5 in motor output end 4, when motor output end 4 rotates, pin rod 8 is driven to rotate by pin slot 5, pin rod 8 is clamped U-shaped slot and drives center tube 3 to rotate, so that center tube 3 drives impeller 1 to rotate as a whole through mounting bracket 2 at the bottom of center tube 3;

[0020] Limiting protrusion 9 is arranged at the bottom of pin rod 8, the bottom surface of the U-shaped slot part of center tube 3 is symmetrically provided with limiting groove, limiting protrusion 9 on the surface of pin rod 8 is inserted into the inside of limiting groove, when limiting protrusion 9 on the surface of pin rod 8 is located in the inside of limiting groove, pin rod 8 cannot be displaced along the horizontal direction and cannot be rotated, and is always located in the inside of pin slot 5 and center tube 3.

[0021] Working principle is explained as follows: firstly, when using, motor output end 4 extends to the inside of center tube 3 through mounting bracket 2, and ensures that the pin slot 5 on the surface of motor output end 4 is aligned with the U-shaped slot of center tube 3, then pin rod 8 is put into pin slot 5, and ensures that the horizontal plane of pin rod 8 faces the opening side of pin slot 5, then fixed nut 7 is connected with center tube 3 through thread groove 6, during the connection process, the extension part at the bottom of fixed nut 7 contacts with pin rod 8, and drags pin rod 8 to make limiting protrusion 9 on the other side of pin rod 8 enter into the limiting groove in the U-shaped slot of center tube 3, at this time, motor output end 4 is connected and fixed with center tube 3 through fixed nut 7, and the installation and fixing are completed.

[0022] When the motor output end 4 rotates, the pin rod 8 is driven to rotate by the pin slot 5, the pin rod 8 drives the U-shaped slot to rotate in the rotating direction, and the center pipe 3 is driven to rotate as a whole through the mounting bracket 2 at the bottom of the center pipe 3, so that the impeller 1 is driven to rotate as a whole, and before the pin rod 8 completely separates from the pin slot 5, the motor output end 4 must drive the center pipe 3 to rotate.

[0023] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A range hood fan blade mounting structure, comprising an impeller (1), characterized in that: The impeller (1) is provided with a mounting bracket (2) inside, and a center tube (3) with a U-shaped groove on the top is provided on the surface of the mounting bracket (2), and a motor output end (4) passing through the mounting bracket (2) is inserted from bottom to top inside the center tube (3), and a pin groove (5) adapted to the U-shaped groove on the top of the center tube (3) is provided on the top of the motor output end (4), and a threaded groove (6) is provided on the inner wall of the pin groove (5) and the surface of the center tube (3), and a fixing nut (7) is threadedly connected to the surface of the threaded groove (6), and a pin rod (8) is inserted inside the pin groove (5), and a limiting protrusion (9) is provided on the bottom of the pin rod (8).

2. The range hood fan blade mounting structure according to claim 1, characterized in that: The pin rod (8) is a circular rod-shaped structure as a whole, and a horizontal surface is provided on the top. The diameter of the pin rod (8) is adapted to the pin groove (5) and the U-shaped groove on the top of the central tube (3).

3. The range hood fan blade mounting structure according to claim 2, characterized in that: The fixing nut (7) is a nut with a closed top and a mountain-shaped cross section. A downward extending portion is provided at the center of the inner wall of the fixing nut (7). The surface of the extending portion is provided with a thread adapted to the inner wall of the pin groove (5), and the bottom of the extending portion abuts against the horizontal surface of the pin rod (8).

4. The range hood fan blade mounting structure according to claim 1, characterized in that: The bottom surface of the U-shaped groove portion of the central tube (3) is symmetrically provided with a limiting groove, and the limiting protrusion (9) on the surface of the pin rod (8) is plugged into the inside of the limiting groove.

5. The range hood fan blade mounting structure according to any one of claims 1 to 3, characterized in that: The pin rod (8) passes through the U-shaped groove of the central tube (3) and the pin groove (5) in the motor output end 4 and extends to both sides of the central tube (3).

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