A transmission device between an impeller and a motor and an air conditioner thereof

Abstract

The present invention relates to the field of air conditioners, and more specifically, to a transmission device for use between an impeller and a motor, and an air conditioner thereof, wherein the transmission device comprises: a first connecting member connected to either the impeller or the motor, and a second connecting member connected to the other; the first connecting member is formed with a plurality of protruding claws, and the second connecting member is formed with grooves for engaging with the protruding claws in a transmission manner; when the impeller rotates in the transmission direction driven by the motor, each of the grooves has a transmission side surface that engages with the protruding claws and is used to apply an axial force to the impeller in the direction of the motor; the transmission side surface of the groove is formed on the outer side wall of the second connecting member and extends radially. The present invention provides a transmission device for use between an impeller and a motor, and an air conditioner thereof, which can be quickly assembled and disassembled, is easy to process, and is suitable for mass production.

Description

Technical Field

[0001] The present invention relates to the field of air conditioners, in particular to a transmission device between an impeller and a motor and an air conditioner thereof. Background Art

[0002] Air conditioners are a commonly used household appliance. Traditional air conditioners have air duct and water channel systems that are assembled and fixed to the bottom shell as a whole as basic parts. If they need to be disassembled and cleaned, professionals are required to disassemble the various parts of the air conditioner and take them out for cleaning, which is extremely inconvenient.

[0003] During the long-term use of the air conditioner, dust and other debris entering the air duct and water channel from the air inlet will cause serious pollution to the entire air duct and water channel system. If not cleaned in time, it will serve as a pollution source and bring harm to the environment during the operation of the air conditioner, which will cause great harm to the health of users.

[0004] In order to facilitate disassembly and cleaning, Chinese patent CN2823621Y discloses a fan device for a household appliance, which includes a connecting device, wherein the connecting device includes a blade nest embedded in the center of the other end face of the impeller and a motor sleeve fixedly installed on the main shaft of the driving fan motor. One or more mounting grooves are provided in the blade nest, and one or more mounting clips are provided in the motor sleeve. Although this structure is convenient for transmission and disassembly, its mounting groove structure is a concave curved surface structure. The processing time and cost of the concave curved surface structure are high and the processing process is complicated, and it cannot be mass-produced. Summary of the Invention

[0005] To this end, the technical problem to be solved by the present invention is that the transmission device between the impeller and the motor in the prior art has a complex processing technology and cannot be mass-produced, and thus provides a transmission device between the impeller and the motor and an air conditioner thereof that can be quickly disassembled and assembled, conveniently processed, and suitable for mass production.

[0006] In order to solve the above technical problems, the present invention provides a transmission device between an impeller and a motor, which includes:

[0007] a first connecting member connected to either the impeller or the motor, and

[0008] a second connecting member connected to the other of the two;

[0009] Among them, a plurality of cams are formed on the first connecting member, and a groove for transmission cooperation with the cams is formed on the second connecting member. When the impeller rotates along the transmission direction in which the motor drives the impeller to rotate, each of the grooves has a transmission side surface that cooperates with the cam, so as to apply an axial force to the impeller in the direction of the motor.

[0010] The transmission side surface of the groove is formed on the outer side wall of the second connecting member and extends radially.

[0011] An inner through hole is formed on the first connecting member, and the inner through hole is suitable for the second connecting member to partially extend therein so that the transmission side surface of the pawl is in transmission cooperation with the transmission side surface of the groove.

[0012] A stop surface is formed on the other side opposite to the transmission side surface, which is used to prevent the first connecting member from being disengaged from the second connecting member when the machine is shut down or the wind speed changes.

[0013] The stop surface and the transmission side surface are connected via a spiral straight surface.

[0014] At least one of the two connecting members is provided with an axially extending guide surface for guiding and centering the protruding claws when they are docked with the grooves.

[0015] The lead-in surface on the second connecting member is a connecting surface connecting two adjacent grooves; and / or the lead-in surface on the first connecting member is an inner side surface where the protruding claws are located.

[0016] The introduction surface is a tapered surface.

[0017] The connecting surface and the inner side surface have an angle difference in inclination relative to the central axis, so that the root of the protruding claw does not radially abut against the top position of the groove.

[0018] One end of the first connecting member and / or the second connecting member connected to the impeller shaft or the motor output shaft has a non-circular structure.

[0019] The non-circular structure is a special-shaped hole formed by combining a part of a circular hole and a chordal section.

[0020] The top and the root of the protruding claw are provided with transition arcs.

[0021] The first connecting member and the second connecting member are provided with mutually cooperating limiting structures for preventing the protruding claws and the grooves from axially abutting against each other at the root position.

[0022] An air conditioner comprises an impeller and a motor, wherein the transmission device according to any one of claims 1 to 14 is arranged between the impeller and the motor.

[0023] The above technical solution of the present invention has the following advantages over the prior art:

[0024] 1. The transmission device between the impeller and the motor described in the present invention comprises: a first connecting member connected to either the impeller or the motor, and a second connecting member connected to the other of the two; wherein the first connecting member is formed with a plurality of claws, and the second connecting member is formed with grooves that are transmission-matched with the claws. When the impeller rotates along the transmission direction in which the motor drives the impeller to rotate, each of the grooves has a transmission side surface that cooperates with the claws, and is used to apply an axial force toward the direction of the motor to the impeller. The transmission side surface of the groove is formed on the outer side wall of the second connecting member and extends radially, that is, the groove is formed by directly removing material from the outer side wall. It also has the advantages of quick disassembly and assembly in the existing technology, is easy to process, and is suitable for mass production.

[0025] 2. In the transmission device described in the present invention, a stop surface is formed on the other side opposite to the transmission side surface to prevent the first connecting member from being disengaged from the second connecting member when the machine is shut down or the wind speed changes.

[0026] 3. In the transmission device described in the present invention, the stop surface and the transmission side surface are connected by a spiral straight surface, so that the overall structure is easy to process and the production efficiency is improved.

[0027] 4. In the transmission device described in the present invention, at least one of the two connecting parts is provided with an axially extending guide surface for guiding and centering the pawl and the groove when they are docked, that is, radial structural positioning is performed through the guide surface to ensure that the centers of the two are aligned, so that the parts are easy to process, the guide fit is reliable, and the service life is long.

[0028] 5. In the transmission device described in the present invention, the lead-in surface on the second connecting member is a connecting surface connecting two adjacent grooves, that is, the groove is formed on the outer side surface during processing, and the remaining surface is the connecting surface, that is, the lead-in surface is also formed when the groove is processed, which has high processing efficiency; and / or the lead-in surface on the first connecting member is the inner side surface where the cam is located, that is, the inner side surface of the inner through hole is the lead-in surface, which is convenient to process and has high processing efficiency.

[0029] 6. In the transmission device described in the present invention, the inclination angles of the connecting surface and the inner surface relative to the central axis have an angle difference, which is used to prevent the root of the pawl from radially interfering with the top position of the groove, thereby extending the service life.

[0030] 7. In the transmission device described in the present invention, the end of the first connecting member and / or the second connecting member connected to the impeller shaft or the motor output shaft is a non-circular structure, which ensures reliable transmission and simple structure.

[0031] 8. In the transmission device described in the present invention, the first connecting member and the second connecting member are provided with mutually cooperating limiting structures for preventing the top of the pawl from radially interfering with the root position of the groove, thereby reducing the force on the top of the pawl and the groove and improving the overall service life.

[0032] 9. In the air conditioner described in the present invention, it includes an impeller and a motor, and the above-mentioned transmission device is arranged between the impeller and the motor, and also has all the advantages described above for the transmission device. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings, wherein

[0034] Figure 1 is a perspective view of an embodiment of the transmission device of the present invention;

[0035] Figure 2 is a perspective view of another embodiment of the transmission device of the present invention;

[0036] Figure 3 yes Figure 2 The main view;

[0037] Figure 4 yes Figure 3 AA cross-sectional view.

[0038] The reference numerals in the figure are as follows: 1-first connecting member, 11-claw, 12-inner through hole, 2-second connecting member, 21-groove, 3-transmission side surface, 4-stop surface, 5-spiral straight surface, 6-limiting structure, 7-introduction surface, 8-non-circular structure. DETAILED DESCRIPTION

[0039] Example 1

[0040] An air conditioner includes an impeller and a motor, with a transmission device provided between the impeller and the motor, the transmission device including: a first connecting member 1 connected to the output shaft of the motor, and a second connecting member 2 connected to the impeller shaft of the impeller; wherein the first connecting member 1 is formed with a plurality of protruding claws 11, and the second connecting member 2 is formed with grooves 21 for transmission cooperation with the protruding claws 11, and when the impeller rotates along the transmission direction in which the motor drives the impeller to rotate, each of the grooves 21 has a transmission side surface 3 that cooperates with the protruding claws 11, and is used to apply an axial force to the impeller in the direction of the motor, and the transmission side surface 3 of the groove 21 is formed on the outer side wall of the second connecting member 2 and extends radially, as shown in FIG. Figure 1The first connecting member 1 is formed with an inner through hole 12 , which is suitable for the second connecting member 2 to partially extend therein so that the transmission side surface 3 of the pawl 11 and the transmission side surface 3 of the groove 21 can be in transmission cooperation.

[0041] The second connecting member 2 is provided with an axially extending lead-in surface 7 for guiding and centering the protruding claw 11 when mating with the groove 21. The lead-in surface 7 on the second connecting member 2 is a connecting surface connecting two adjacent grooves 21.

[0042] The guide surface 7 is a conical surface. The end of the second connector 2 that connects to the motor output shaft has a non-circular structure 8. This non-circular structure 8 is a special-shaped hole formed by combining a portion of a circular hole and a chordal section. The top and base of the protruding claw 11 are provided with transition arcs. The first and second connectors 1 and 2 are provided with mutually cooperating limiting structures 6 to prevent the top of the protruding claw 11 from radially interfering with the groove 21 at the base.

[0043] Of course, as a convertible embodiment, the second connecting member 2 is integrally formed with the motor output shaft, and the cross-sectional shape of the second connecting member 2 is not limited.

[0044] Example 2

[0045] An air conditioner includes an impeller and a motor, with a transmission device provided between the impeller and the motor, the transmission device including: a first connecting member 1 integrally connected to the impeller shaft of the impeller, and a second connecting member 2 integrally connected to the output shaft of the motor; wherein the first connecting member 1 is formed with a plurality of protruding claws 11, and the second connecting member 2 is formed with grooves 21 for transmission cooperation with the protruding claws 11, and when the impeller rotates in the transmission direction in which the motor drives the impeller to rotate, each of the grooves 21 has a transmission side surface 3 that cooperates with the protruding claws 11 and is used to apply an axial force to the impeller in the direction of the motor, and the transmission side surface 3 of the groove 21 is formed on the outer side wall of the second connecting member 2 and extends radially, as shown in FIG. Figure 2-3 As shown, the first connecting member 1 is formed with an internal through-hole 12, which allows the second connecting member 2 to partially extend therein, thereby engaging the transmission side surface 3 of the protruding claw 11 with the transmission side surface 3 of the groove 21. A retaining surface 4 is formed on the side opposite the transmission side surface 3 to prevent the first connecting member 1 from disengaging from the second connecting member 2 during shutdown or wind speed changes.

[0046] The stop surface 4 is connected to the transmission side surface 3 via a spiral straight surface 5. The so-called spiral straight surface 5 is a spiral surface formed on the outer surface of the cylinder, the radial projection of which is a straight line. Both connectors are provided with an axially extending guide surface 7 for guiding and centering the protruding claw 11 when it is docked with the groove 21. The guide surface 7 on the second connector 2 is the connecting surface between two adjacent grooves 21; the guide surface 7 on the first connector 1 is the inner side surface where the protruding claw 11 is located. The guide surface 7 is a conical surface. The inclination angle of the connecting surface and the inner side surface relative to the central axis is different, which is used to prevent the root of the protruding claw 11 from radially interfering with the top position of the groove 21. The end of the first connector 1 connected to the impeller shaft is a non-circular structure 8, and the end of the second connector 2 connected to the output shaft of the motor is also a non-circular structure 8. The non-circular structure 8 is a special-shaped hole formed by combining a portion of a circular hole and a chordal section. The top and root of the protruding claw 11 are provided with transition arcs. The first connecting member 1 and the second connecting member 2 are provided with a limiting structure 6. In this embodiment, the limiting structure 6 is respectively provided in the step in the through hole 12 of the first connecting member 1 and the end of the connecting surface of the second connecting member 2, so that the top of the protruding claw 11 and the root position of the groove 21 do not abut each other. Figure 4 shown.

[0047] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A transmission device between an impeller and a motor, comprising: A first connecting member connected to either the impeller or the motor, and a second connecting member connected to the other of the impeller and the motor; Among them, a plurality of cams are formed on the first connecting member, and a groove for transmission cooperation with the cam is formed on the second connecting member. When the impeller rotates along the transmission direction in which the motor drives the impeller to rotate, each of the grooves has a transmission side surface that cooperates with the cam, and is used to apply an axial force toward the motor direction to the impeller. It is characterized in that The transmission side surface of the groove is formed on the outer side wall of the second connecting member and extends radially. At least one of the two connecting members is provided with an axially extending guide surface for guiding and centering the claw when it is docked with the groove. The guide surface on the second connecting member is the connecting surface between two adjacent grooves; and / or the guide surface on the first connecting member is the inner side surface where the claw is located. The introduction surface is a conical surface, The connecting surface and the inner side surface have an angle difference in inclination relative to the central axis, so that the root of the protruding claw does not radially abut against the top position of the groove.

2. The transmission device according to claim 1, characterized in that: An inner through hole is formed on the first connecting member, and the inner through hole is suitable for the second connecting member to partially extend therein so that the transmission side surface of the pawl is in transmission cooperation with the transmission side surface of the groove.

3. The transmission device according to claim 1 or 2, characterized in that: A stop surface is formed on the other side opposite to the transmission side surface, which is used to prevent the first connecting member from being disengaged from the second connecting member when the machine is shut down or the wind speed changes.

4. The transmission device according to claim 3, characterized in that: The stop surface and the transmission side surface are connected via a spiral straight surface.

5. The transmission device according to claim 1, characterized in that: One end of the first connecting member and / or the second connecting member connected to the impeller shaft or the motor output shaft has a non-circular structure.

6. The transmission device according to claim 5, characterized in that: The non-circular structure is a special-shaped hole formed by combining a part of a circular hole and a chordal section.

7. The transmission device according to claim 1, characterized in that: The top and the root of the protruding claw are provided with transition arcs.

8. The transmission device according to claim 1, characterized in that: The first connecting member and the second connecting member are provided with mutually cooperating limiting structures for preventing the top of the protruding claw from axially abutting against the root of the groove.

9. An air conditioner comprising an impeller and a motor, characterized in that: A transmission device according to any one of claims 1 to 8 is provided between the impeller and the motor.

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