CN105805247A - Belt double-tensioning transmission device for clothes dryer and clothes dryer - Google Patents

Abstract

The invention discloses a belt double-tensioning transmission device for a clothes dryer and the clothes dryer, and belongs to the technical field of clothes dryers. The belt double-tensioning transmission device for the clothes dryer and the clothes dryer are designed for solving the problem that an existing clothes dryer roller is unreliable in forward-reverse rotation transmission. The belt double-tensioning transmission device for the clothes dryer comprises a motor, a belt and a belt tensioning device body, wherein the belt is wound on a motor transmission shaft. The belt tensioning device body comprises a first tensioning wheel and a second tensioning wheel. In a transmission path of the belt, the first tensioning wheel and the second tensioning wheel are arranged on the two sides of the motor transmission shaft correspondingly and can apply tensioning force to the belt. At the same time, the invention provides the clothes dryer comprising the belt double-tensioning transmission device. The provided belt double-tensioning transmission device for the clothes dryer is provided with the two tensioning wheels; when the motor forwards rotates, the belt can be tensioned through one of the two tensioning wheels; when the motor reversely rotates, the belt can be tensioned through the other tensioning wheel; slipping of the belt can be effectively avoided; and the effect that reliable transmission is achieved during both forward rotating and reverse rotating of the motor is ensured.

Description

Clothes dryer belt double tensioning drive and clothes dryer

technical field

The invention relates to the technical field of clothes dryers, in particular to a clothes dryer belt double tension transmission device and a clothes dryer with the device.

Background technique

The basic working process of the clothes dryer is to heat the dry air through the heater. The high-temperature dry and hot air is sent to the drum by the fan. The high-temperature dry and hot air contacts the wet clothes and heats the wet clothes. The moisture in the wet clothes It is precipitated in the form of water vapor. At this time, the relatively dry and hot air quickly absorbs the water vapor on the surface of the clothes and turns into medium-high temperature saturated humid air, and then the medium-high temperature saturated humid air is taken away from the clothes by the action of the fan, so as to achieve the purpose of drying clothes. .

In order to ensure that the clothes in the drum can be dried evenly, while the clothes are being heated, the drum of the clothes dryer rotates clockwise, counterclockwise in one direction or alternately clockwise and counterclockwise in a regular manner around the axis of the drum, so as to turn the clothes The clothes are dried evenly and can shorten the drying time of the clothes, prevent the clothes from being entangled, and improve the comfort of the user.

Existing clothes dryers generally use a motor to drive the belt to drive the drum to rotate. Its structure is shown in Figure 1 as a belt drive single-tension form. The motor 1' rotates clockwise and pulls the belt 2' to realize the clockwise rotation of the drum 7'. The tension pulley 6' is tensioned on the loose side of the belt 2', thereby ensuring that the belt can be effectively driven. However, this transmission method cannot provide reliable transmission if the drum rotates counterclockwise. The original tight side becomes a loose side, and there is no tensioning device on the loose side, which will lead to a decrease in transmission force and belt slippage.

In view of the above problems, there is an urgent need for a new belt tensioning transmission device to solve the problem of unreliable forward and reverse transmission of the existing clothes dryer drum.

Contents of the invention

One object of the present invention is to provide a belt double tension transmission device for a clothes dryer that can ensure reliable rotation of the drum in both forward and reverse directions.

Another object of the present invention is to provide a clothes dryer in which the drum can rotate reliably in both forward and reverse directions.

For reaching this purpose, on the one hand, the present invention adopts following technical scheme:

Dryer belt double tension transmission device, including a motor, a belt wound on the drive shaft of the motor, and a belt tensioning device, the belt tensioning device includes a first tensioning pulley and a second tensioning pulley, on the belt The first tensioning pulley and the second tensioning pulley are respectively arranged on both sides of the drive shaft of the motor on the transmission path, and can respectively apply tension to the belt.

Preferably, the belt tensioning device further includes a first tensioning arm and a second tensioning arm;

One end of the first tensioning arm is rotatably arranged on the fixed shaft, and the other end is installed with the first tensioning wheel;

One end of the second tensioning arm is rotatably arranged on the fixed shaft, and the other end is installed with the second tensioning wheel;

The first tensioning arm is connected to the second tensioning arm through an elastic member.

Preferably, the elastic member is a spring;

The spring is a tension spring, and the belt is located between the first tensioning pulley and the second tensioning pulley;

Alternatively, the spring is a compression spring, and the belt is located on both sides of the first tension pulley and the second tension pulley.

Preferably, the outer peripheral surfaces of the first tensioning pulley and the second tensioning pulley are groove structures, and the bottom surface of the groove structure is an arc surface protruding radially outward.

Preferably, the first tension arm and the second tension arm are threaded on the same fixed shaft, and a friction plate is also threaded on the fixed shaft, and the friction plate is located between the first tension arm and the second tension arm. between the second tensioning arms.

Preferably, the fixed shaft is provided with fasteners to prevent the first tension arm, the friction plate and the second tension arm from coming off the fixed shaft.

Preferably, the fixed shaft is a stepped shaft, the large shaft of which is fixed on the mounting frame of the motor, and the first tension arm, the friction plate and the second tension arm are passed through the small shaft , the fastener has a limiting surface, and the fastener limits the first tensioning arm, the friction plate and the second tensioning arm between the stepped surface of the stepped shaft and the limiting surface. Between the positioning surfaces, a spring leaf is arranged between the second tensioning arm and the limiting surface.

Preferably, the fastener includes a bolt and a nut, the bolt passes through the spring piece, the fixed shaft and the installation frame, and the protruding part is tightened and fixed with the nut.

On the other hand, the present invention adopts the following technical solutions:

A clothes dryer includes a drum, and further includes the above-mentioned dryer belt double-tensioning transmission device, and the belt of the clothes dryer belt double-tensioning transmission device drives the drum to rotate.

The beneficial effects of the present invention are:

The clothes dryer belt double-tensioning transmission device provided by the present invention has two tensioning pulleys, and the two tensioning pulleys are respectively arranged on both sides of the motor transmission shaft on the transmission path of the belt, and can respectively apply tension to the belt , so as to ensure that the belt can be tensioned when the motor is rotating forward and reverse, effectively avoiding belt slippage, and ensuring reliable transmission when the motor is rotating forward and reverse.

The clothes dryer provided by the present invention adopts the above-mentioned double-tensioning transmission device for clothes dryer belts, so that the drum can be reliably rotated forward and reverse, ensuring uniform drying of clothes, shortening the drying time of clothes, and preventing clothes from being entangled.

Description of drawings

Fig. 1 is the structural representation of existing belt tensioning transmission device;

Fig. 2 is a perspective view of the belt double tension transmission device of the clothes dryer provided by the first embodiment of the present invention;

Fig. 3 is a front view of the belt double-tensioning transmission device of the clothes dryer provided by Embodiment 1 of the present invention;

Fig. 4 is a left view of the belt double-tensioning transmission device of the clothes dryer provided by Embodiment 1 of the present invention;

Fig. 5 is an exploded view of the joint between the first tensioning wheel and the first tensioning arm according to the embodiment of the present invention;

Fig. 6 is an exploded view of the first tension arm, the second tension arm and the fixed shaft according to the embodiment of the present invention;

Fig. 7 is an embodiment of the present invention-a tensioning wheel of a structural form;

Fig. 8 is a tensioning wheel of another structural form according to the embodiment of the present invention;

Fig. 9 is a tension pulley in another structural form according to the embodiment of the present invention;

Fig. 10 is a perspective view of a belt double-tensioning transmission device for a clothes dryer provided in Embodiment 2 of the present invention.

In the figure, 1', motor; 2', belt; 6', tensioner; 7', roller;

1. Motor; 11. Motor transmission shaft; 2. Belt; 3. Fixed shaft; 4. The first tensioning arm; 5. The second tensioning arm; 61. The first tensioning wheel; 62. The second tensioning wheel ; 7, roller; 8, spring; 9, bolt; 10, nut; 12, friction plate; 13, spring plate; 14, tensioning wheel shaft; 15, sliding bearing; 16, rolling bearing;

detailed description

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

Embodiment one:

This embodiment provides a belt double-tensioning transmission device for a clothes dryer, as shown in FIGS. 2 to 6 , which includes a motor 1 , a belt 2 wound on a drive shaft 11 of the motor, and a belt tensioning device. The belt tensioning device has two tensioning pulleys, which are respectively arranged on both sides of the motor transmission shaft 11 on the transmission path of the belt 2, so that when the motor 1 rotates forward and reverse, the belt tensioning device can both rotate the belt 2 Tension is performed to prevent belt 2 from slipping.

The belt tensioning device comprises a first tensioning arm 4 and a second tensioning arm 5 which are passed through the same fixed shaft 3, a first tensioning pulley 61 is installed on the free end of the first tensioning arm 4, and a second tensioning wheel 61 is installed on the free end of the first tensioning arm 4. The free end of the arm 5 is fitted with a second tensioning wheel 62 . The first tension arm 4 and the second tension arm 5 are connected by an elastic member. In this embodiment, the elastic member is a spring 8, and the spring 8 is a tension spring. The belt 2 is located between the first tension pulley 4 and the second tension pulley 5, that is, the inner surface of the belt 2 cooperates with the motor transmission shaft 11 and the drum 7 of the clothes dryer, the first tension pulley 4 and the second tension pulley The tension pulley 5 is pressed inwardly against the outer side of the belt 2 . The spring 8 is provided with a pre-tightening force according to the actual maximum load, so that the belt 2 is tensioned.

The fixed shaft 3 is a stepped shaft, the large shaft of the stepped shaft is fixed on the mounting frame 17 of the motor 1, the first tension arm 4 and the second tension arm 5 are installed on the small shaft of the stepped shaft, and the bolt 9 passes through the fixed shaft. The shaft 3 and the mounting bracket 17 are screwed and fixed with the nut 10 at the passing part. The bolt head of the bolt 9 serves as a limit surface to prevent the first tension arm 4 and the second tension arm 5 from detaching from the fixed shaft 3 .

A friction plate 12 is also worn on the fixed shaft 3, and the friction plate 12 is located between the first tension arm 4 and the second tension arm 5, and the first tension arm 4 and the second tension arm 4 can be protected by the setting of the friction plate 12. The tension arm 5 prolongs the service life of the first tension arm 4 and the second tension arm 5, and also has the effect of reducing noise.

Between the second tensioning arm 5 and the bolt head, there is also a spring leaf 13, through which the friction force and clamping force between the two tensioning arms can be adjusted, so that the tensioning arm can be wound around the fixed shaft 3 Rotation can limit the two tensioning arms so as not to cause large shaking.

The bolt 9 cooperates with the nut 10 to define the first tension arm 4 , the friction plate 12 , the second tension arm 5 and the spring plate 13 between the stepped surface of the fixed shaft 3 and the bolt head of the bolt 9 .

The outer peripheral surfaces of the first tensioning pulley 61 and the second tensioning pulley 62 are groove structures, the belt 2 is arranged in the groove structure, and the groove wall of the groove structure can form a stop for the belt 2 . The first tensioning wheel 61 and the second tensioning wheel 62 are fixed on the first tensioning arm 4 and the second tensioning arm 5 through the tensioning wheel shaft 14 . The first tensioning wheel 61 and the second tensioning wheel 62 can adopt the wear-resistant material tensioning wheel as shown in Figure 7, also can adopt the form that slide bearing 15 is embedded in the tensioning wheel as shown in Figure 8, or adopt As shown in FIG. 9, the rolling bearing 16 is embedded in the tension wheel. When the wear-resistant material tensioner is used, the tensioner and the tensioner shaft 14 are in clearance fit. It can slide within a certain range, and can play the role of adjusting the position of the belt 2. When the rolling bearing 16 is embedded in the tensioning wheel, the rolling bearing 16 and the tensioning wheel 14 are in an interference fit. At this time, the bottom surface of the groove structure of the tensioning wheel is set as an arc surface protruding radially outward. , so that the belt 2 can rise to the middle position along the arc surface under the action of tension, and play the role of adjusting the position of the belt 2.

The fixing method of the tensioning wheel shaft 14 and the tensioning arm is not limited, and methods such as riveting and screwing are all available.

Among them, it is not limited to provide pre-tightening force through the spring, the first tensioning wheel and the second tensioning wheel can also be set to be fixed or the position can be adjusted, and the size of the tensioning force can be changed by adjusting the position of the two tensioning wheels . Even if the pretension is provided by the spring, it is not limited to setting the spring as a tension spring, but can also be set as a compression spring, and the belt is set on both sides of the first tensioning pulley and the second tensioning pulley. The pulley and the second tensioning pulley press outward to the inner surface of the belt, which can also achieve the effect of bidirectional tensioning.

Embodiment two:

This embodiment provides a belt double tension transmission device for a clothes dryer, as shown in Figure 10, its structure is basically the same as that of Embodiment 1, including a motor 1, a belt 2 wound on the drive shaft 1 of the motor, and a belt tensioner. device. The belt tensioning device comprises a first tensioning arm 4 and a second tensioning arm 5, the free end of the first tensioning arm 4 is equipped with a first tensioning pulley 61, and the free end of the second tensioning arm 5 is equipped with a second Tensioner 62. The first tensioning arm 4 and the second tensioning arm 5 are connected by a spring 8 .

The difference is that the first tensioning arm 4 and the second tensioning arm 5 are threaded on different fixed shafts, which can effectively prevent the movement interference of the two tensioning arms and further improve the reliability of the transmission.

Embodiment three:

This embodiment provides a clothes dryer, which includes a drum and the dryer belt double-tensioning transmission device described in Embodiment 1 or 2, and the drum is driven to rotate by the belt of the clothes dryer belt double-tensioning transmission device. This enables the drum to perform reliable positive and negative rotation, ensuring uniform drying of the clothes, shortening the drying time of the clothes, and preventing the clothes from being entangled.

The above describes the technical principles of the present invention in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present invention, and cannot be construed as limiting the protection scope of the present invention in any way. Based on the explanations herein, those skilled in the art can think of other specific implementation modes of the present invention without creative efforts, and these modes will all fall within the protection scope of the present invention.

Claims (9)

1. Dryer belt dual-tensioning transmission device comprises a motor (1), a belt (2) wound on a motor transmission shaft (11) and a belt tensioning device, and is characterized in that: the belt tensioning device comprises a first tensioning wheel (61) and a second tensioning wheel (62), wherein the first tensioning wheel (61) and the second tensioning wheel (62) are respectively arranged on two sides of the motor transmission shaft (11) on the transmission path of the belt (2) and can respectively apply tensioning force to the belt (2).

2. Dryer belt double tensioning transmission according to claim 1, characterized in that: the belt tensioner further comprises a first tensioning arm (4) and a second tensioning arm (5);

one end of the first tensioning arm (4) is rotatably arranged on the fixed shaft (3), and the other end of the first tensioning arm is provided with the first tensioning wheel (61);

one end of the second tensioning arm (5) is rotatably arranged on the fixed shaft (3), and the other end of the second tensioning arm is provided with the second tensioning wheel (62);

the first tensioning arm (4) and the second tensioning arm (5) are connected through an elastic piece.

3. The dryer belt dual-tensioning transmission of claim 2, characterized in that:

the elastic piece is a spring (8);

wherein:

the spring (8) is a tension spring, and the belt (2) is positioned between the first tension wheel (61) and the second tension wheel (62);

or,

the spring (8) is a compression spring, and the belt (2) is positioned on two sides of the first tensioning wheel (61) and the second tensioning wheel (62).

4. Dryer belt double tensioning transmission according to claim 2 or 3, characterized in that: the outer peripheral surfaces of the first tensioning wheel (61) and the second tensioning wheel (62) are both groove structures, and the groove bottom surfaces of the groove structures are arc surfaces protruding outwards in the radial direction.

5. Dryer belt double tensioning transmission according to claim 2 or 3, characterized in that: the first tensioning arm (4) and the second tensioning arm (5) penetrate through the same fixed shaft (3), a friction plate (12) penetrates through the fixed shaft (3), and the friction plate (12) is located between the first tensioning arm (4) and the second tensioning arm (5).

6. Dryer belt double tensioning transmission according to claim 5, characterized in that: and the fixed shaft (3) is provided with a fastener for preventing the first tensioning arm (4), the friction plate (12) and the second tensioning arm (5) from falling off the fixed shaft (3).

7. Dryer belt double tensioning transmission according to claim 6, characterized in that: fixed axle (3) are the step shaft, and its macroaxis is fixed in on mounting bracket (17) of motor (1), first tensioning arm (4) friction disc (12) with second tensioning arm (5) wear to locate on the staff, the fastener has spacing face, the fastener will first tensioning arm (4) friction disc (12) with second tensioning arm (5) are injectd in the step shaft the ladder face with between the spacing face, second tensioning arm (5) with be provided with spring leaf (13) between the spacing face.

8. Dryer belt double tensioning transmission according to claim 7, characterized in that: the fastener comprises a bolt (9) and a nut (10), the bolt (9) penetrates through the spring piece (13), the fixed shaft (3) and the mounting frame (17), and the penetrating part of the bolt is screwed and fixed with the nut (10).

9. A clothes dryer comprising a drum (7), characterized in that: further comprising a dryer belt double tensioning transmission according to any one of claims 1 to 8, the drum (7) being rotated by the belt (2) of the dryer belt double tensioning transmission.