Protection switch assembly and roller clothes dryer

Abstract

The utility model relates to the technical field of roller clothes dryers, and discloses a protection switch assembly and a roller clothes dryer, the protection switch assembly is suitable for being connected with a tensioning mechanism, the tensioning mechanism comprises a belt, the protection switch assembly further comprises a support, the support is provided with a microswitch, a pulling piece and a sliding cover connected with the pulling piece, the sliding cover is connected with the support in a sliding mode, and the belt is connected with the supporting frame. The microswitch is used for controlling the power supply to be powered off and arranged on a sliding path of the sliding cover, when the belt is broken, the pulling piece pulls the sliding cover under the action of external force, and the sliding cover slides and triggers the microswitch to enable the power supply to be powered off. The pulling piece, the sliding cover and the microswitch are matched, when the belt is broken, a power source is cut off in time, clothes in the barrel are prevented from being locally and continuously heated, the situation of machine burning can be effectively avoided, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drum clothes dryers, and in particular to a protection switch component and a drum clothes dryer. Background Art

[0002] The tensioning mechanism in the existing drum dryer is provided with a belt. If the belt suddenly breaks when the dryer is in normal working condition, the drum will be unable to rotate, and the clothes in the drum will continue to be locally heated, which may cause the dryer to burn. The common practice in the industry is to improve the quality of the belt to extend its service life, but this is not enough to ensure the safe operation of the dryer. Utility Model Content

[0003] In order to solve at least one aspect of the above problems, the utility model first provides a protection switch assembly, which is suitable for being connected to a tensioning mechanism, wherein the tensioning mechanism includes a belt, and the protection switch assembly also includes a bracket, on which a microswitch, a pulling member and a sliding cover connected to the pulling member are provided, and the sliding cover is slidably connected to the bracket, and the microswitch is used to control power off and is arranged on the sliding path of the sliding cover. When the belt breaks, the pulling member pulls the sliding cover under the action of external force, and the sliding cover slides and triggers the microswitch to cut off the power.

[0004] Optionally, a slide groove is provided on the bracket, and the slide cover is slidably arranged on the slide groove.

[0005] Optionally, a limiting portion is provided at one end of the sliding groove away from the pulling member, and the limiting portion is used to limit the sliding distance of the sliding cover.

[0006] Optionally, the angle between the lower bottom surface of the slide groove and the horizontal plane ranges from 10° to 20°.

[0007] Optionally, a tension spring is further included, and two ends of the tension spring are respectively connected to the sliding cover and the bracket.

[0008] Optionally, a mounting cavity is provided in the bracket, and the micro switch is fixedly installed in the mounting cavity by bolts.

[0009] Optionally, the micro switch includes a long handle portion, a top end of the long handle portion is provided with a roller portion, and the roller portion is provided on a sliding path of the sliding cover.

[0010] Optionally, a guide surface is provided on the sliding cover, and the guide surface slides and presses the roller part to trigger the micro switch.

[0011] Optionally, a limiting member is provided at one end of the pulling member, and a third connecting portion matched with the limiting member is provided on the sliding cover, and the limiting member abuts against the third connecting portion to drive the sliding cover to slide.

[0012] Compared with the prior art, the protective switch assembly in the utility model cooperates with a pulling member, a sliding cover and a micro switch. When the belt breaks, the power supply is cut off in time to prevent the clothes in the barrel from being continuously heated locally, which can effectively avoid the situation of burning the machine and improve safety.

[0013] In addition, the utility model provides a drum clothes dryer, comprising the protection switch assembly as described above.

[0014] Compared with the prior art, the drum dryer described in the present invention and the above-mentioned protection switch assembly have the same advantages over the prior art, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The structure of the protection switch assembly of the utility model embodiment Figure 1 ;

[0016] Figure 2 A cross-sectional view of a protection switch assembly according to an embodiment of the utility model;

[0017] Figure 3 A side view of a protection switch assembly according to an embodiment of the utility model;

[0018] Figure 4 The structure of the bracket of the embodiment of the utility model Figure 1 ;

[0019] Figure 5 The structure of the bracket of the embodiment of the utility model Figure 2 ;

[0020] Figure 6 The structure of the sliding cover of the utility model embodiment Figure 1 ;

[0021] Figure 7 The structure of the sliding cover of the utility model embodiment Figure 2 ;

[0022] Figure 8 A side view of a micro switch according to an embodiment of the present utility model;

[0023] Fig. 9 The structure of the protection switch assembly of the utility model embodiment Figure 2 ;

[0024] Fig.10 for Figure 8 Enlarged view of part A in the middle.

[0025] Description of reference numerals:

[0026] 1. Micro switch; 11. Long handle; 12. Roller; 2. Pulling member; 21. Limiting member; 22. Connecting member; 23. Fixing plate; 3. Sliding cover; 31. Second connecting part; 32. Sliding cavity; 33. Guide surface; 34. Third connecting part; 341. Through hole; 4. Bracket; 41. Sliding groove; 42. Limiting part; 43. Mounting cavity; 44. First connecting part; 45; Mounting part; 5. Tension spring. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] In the description of the present invention, it should be understood that the terms "upper" and "lower" and the like indicate positions or location relationships that are based on the positions or location relationships when the product is in normal use.

[0029] The terms "first" and "second" are used only for descriptive purposes and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. The drawings of the embodiments of the present utility model are provided with a coordinate system XYZ, wherein the positive direction of the X-axis represents the left, the reverse direction of the X-axis represents the right, the positive direction of the Y-axis represents the front, the reverse direction of the Y-axis represents the back, the positive direction of the Z-axis represents the top, and the reverse direction of the Z-axis represents the bottom.

[0030] The utility model embodiment provides a protection switch assembly, combined with Figure 1-10 As shown, a protection switch assembly is suitable for being connected to a tensioning mechanism, the tensioning mechanism includes a belt, the protection switch assembly also includes a bracket 4, the bracket 4 is provided with a micro switch 1, a pulling member 2 and a sliding cover 3 connected to the pulling member 2, the sliding cover 3 is slidably connected to the bracket 4, the micro switch 1 is used to control power off and is arranged on the sliding path of the sliding cover 3, when the belt breaks, the pulling member 2 pulls the sliding cover 3 under the action of external force, the sliding cover 3 slides and triggers the micro switch 1 to cut off the power.

[0031] The belt is connected to the drum (not shown) of the dryer and drives the drum to rotate. In this embodiment, the tensioning mechanism further includes a support plate (not shown), the lower end of the support plate is slidably connected to the dryer body, the upper end of the support plate is connected to the belt, and one end of the pulling member 2 is connected to the support plate. The pulling member 2 pulls the sliding cover 3 under the tension of the tensioning mechanism. The pulling member 2 can be a pull rope or a pull rod.

[0032] The tensioning mechanism also includes a tensioning spring (not shown), the two ends of which are connected to the support plate and the dryer body respectively. When the dryer is in normal working state, the belt is in a tensioned state, and the pulling member 2 does not move. Figure 1 As shown, when the belt breaks, the support plate moves away from the bracket 4 under the tension of the tension spring, and the support plate drives the pulling member 2 to move, so that the pulling member 2 pulls the sliding cover 3 to slide, and the sliding of the sliding cover 3 triggers the micro switch 1 to cut off the power. When the maintenance personnel repair the belt, they reset the micro switch 1 and the sliding cover 3 to return to the original position and release the power-off state.

[0033] In this embodiment, the power supply main circuit of the clothes dryer is controlled by the circuit, the micro switch 1 is electrically connected to the circuit power supply of the clothes dryer, and the micro switch 1 is in a normally closed form. When the micro switch 1 is triggered, the circuit is closed and the power is cut off. This working mode is often used in electronic door locks, electronic cabinet locks and other devices that require normally closed circuits to maintain a safe state.

[0034] The bracket 4 is provided with a slide groove 41 , and the slide cover 3 is slidably disposed on the slide groove 41 .

[0035] like Figure 5 As shown, there are two slide grooves 41, which are respectively arranged on the left and right sides of the bracket 4, and the left and right ends of the slide cover 3 are respectively accommodated in the two slide grooves 41. The slide cover 3 slides in the slide grooves 41, and the slide grooves 41 limit the sliding track of the slide cover 3 to prevent the slide cover 3 from deviating from the track, making the sliding connection structure more stable.

[0036] A limiting portion 42 is disposed at one end of the sliding slot 41 away from the pulling member 2 , and the limiting portion 42 is used to limit the sliding distance of the sliding cover 3 .

[0037] like Figure 4 As shown, when the maintenance personnel slides the sliding cover 3 to reset it, when the sliding cover 3 slides to abut against the limiting portion 42, it means that the reset is completed, preventing the sliding cover 3 from being over-positioned.

[0038] In this embodiment, the slide groove 41 and the limiting portion 42 are integrally formed with the bracket 4, which simplifies the manufacturing process and saves costs.

[0039] Preferably, the angle between the bottom surface of the slide groove 41 and the horizontal plane is in the range of 10°-20°.

[0040] like Figure 3 As shown, the angle θ between the bottom surface of the slide groove 41 and the horizontal plane is in the range of 10°-20°. In this embodiment, θ is 15°.

[0041] Such a configuration can reduce the friction between the sliding cover 3 and the sliding groove 41 during the reset sliding, so that the sliding cover 3 can slide more smoothly in the sliding groove 41.

[0042] Furthermore, the protection switch assembly further comprises a tension spring 5 , and two ends of the tension spring 5 are respectively connected to the sliding cover 3 and the bracket 4 .

[0043] like Figure 1 As shown, the top of the bracket 4 is provided with a first connection part 44, the side end of the sliding cover 3 is provided with a second connection part 31, and the two ends of the tension spring 5 are respectively connected to the first connection part 44 and the second connection part 31. In this embodiment, the second connection part 31 is arched, and the second connection part 31 is protruding from the upper surface of the sliding cover 3.

[0044] When the pulling member 2 pulls the sliding cover 3, the tension spring 5 is in a stretched state, and the sliding cover 3 presses the micro switch 1 to complete the power-off operation. At this time, the pulling member 2, the sliding cover 3, the micro switch 1 and the tension spring 5 are all fixed. When the maintenance personnel repair the belt, the tension spring 5 facilitates the reset of the sliding cover 3, and the tension spring 5 can drive the sliding cover 3 to slide back to the original direction until the sliding cover 3 abuts against the limit portion 42.

[0045] The bracket 4 is provided with a mounting cavity 43 , and the micro switch 1 is fixedly mounted in the mounting cavity 43 by means of bolts.

[0046] like Figure 4 and 5 As shown, the micro switch 1 is provided with a through screw hole, and bolts are passed through the screw holes to connect the micro switch 1 to the left and right side walls of the bracket 4, so that the micro switch 1 is fixed in the installation cavity 43, which saves space and prevents accidental touching of the micro switch 1.

[0047] like Figure 2 and 5 As shown, a mounting portion 45 is provided in the mounting cavity 43 , and the mounting portion 45 is used to limit the mounting position of the micro switch 1 . The mounting portion 45 and the bracket 4 are integrally formed, and the micro switch 1 is abutted and connected with the mounting portion 45 .

[0048] The micro switch 1 comprises a long handle 11 , a roller 12 is disposed at the top of the long handle 11 , and the roller 12 is disposed on the sliding path of the sliding cover 3 .

[0049] like Figure 8 As shown, the long handle 11 is tilted, and the roller 12 can reduce the friction between the slide cover 3 and the micro switch 1. When the slide cover 3 presses the roller 12, the roller 12 drives the long handle 11 to press down to trigger the micro switch 1 to control the power supply to be cut off.

[0050] like Figure 2 As shown, in this embodiment, a sliding cavity 32 is provided at the lower end of the second connecting portion 31 , and the roller portion 12 is partially accommodated in the sliding cavity 32 and is slidably connected to the sliding cavity 32 .

[0051] The sliding cover 3 is provided with a guide surface 33 , and the guide surface 33 slides and presses the roller portion 12 to trigger the micro switch 1 .

[0052] like Figure 7 As shown, the guide surface 33 is disposed on the bottom surface of the sliding cover 3 and is matched with the position of the roller portion 12 . The roller portion 12 is disposed on the sliding track of the guide surface 33 .

[0053] A limiting member 21 is disposed at one end of the pulling member 2 , and a third connecting portion 34 matched with the limiting member 21 is disposed on the sliding cover 3 . The limiting member 21 abuts against the third connecting portion 34 to drive the sliding cover 3 to slide.

[0054] like Figure 6 and 10 As shown, in this embodiment, the third limiting portion 42 is integrally formed with the sliding cover 3, and a through hole 341 is provided on the third limiting portion 42. After one end of the pulling member 2 passes through the through hole 341, it abuts against the inner wall of the third limiting portion 42 through the limiting member 21, and the third limiting portion 42 is driven to slide through the limiting member 21.

[0055] The other end of the pulling member 2 is provided with a connecting member 22 and a fixing plate 23, the fixing plate 23 is connected to the tensioning mechanism through the connecting member 22, in this embodiment, the connecting member 22 is a bolt, and the fixing plate 23 is connected to the support plate through the bolt, so that the support plate drives the pulling member 2 to move.

[0056] Another embodiment of the utility model provides a drum dryer, comprising the protection switch assembly as described above.

[0057] Although the disclosure is as above, the protection scope of the disclosure is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A protection switch assembly, suitable for connection with a tensioning mechanism, wherein the tensioning mechanism comprises a belt, characterized in that: The protection switch assembly also includes a bracket (4), on which a micro switch (1), a pulling member (2) and a sliding cover (3) connected to the pulling member (2) are provided, the sliding cover (3) being slidably connected to the bracket (4), the micro switch (1) being used to control power failure and being arranged on a sliding path of the sliding cover (3), when the belt breaks, the pulling member (2) pulls the sliding cover (3) under the action of an external force, and the sliding cover (3) slides and triggers the micro switch (1) to cause power failure.

2. The protection switch assembly according to claim 1, characterized in that: The bracket (4) is provided with a slide groove (41), and the slide cover (3) is slidably arranged on the slide groove (41).

3. The protection switch assembly according to claim 2, characterized in that: A limiting portion (42) is provided at one end of the sliding groove (41) away from the pulling member (2), and the limiting portion (42) is used to limit the sliding distance of the sliding cover (3).

4. The protection switch assembly according to claim 2, characterized in that: The angle between the lower bottom surface of the slide groove (41) and the horizontal plane is in the range of 10°-20°.

5. The protection switch assembly according to claim 1, characterized in that: It also includes a tension spring (5), the two ends of which are respectively connected to the sliding cover (3) and the bracket (4).

6. The protection switch assembly according to claim 1, characterized in that: The bracket (4) is provided with a mounting cavity (43), and the micro switch (1) is fixedly mounted in the mounting cavity (43) by means of bolts.

7. The protection switch assembly according to claim 1, characterized in that: The micro switch (1) comprises a long handle (11), a roller part (12) is provided at the top end of the long handle (11), and the roller part (12) is arranged on the sliding path of the sliding cover (3).

8. The protection switch assembly according to claim 7, characterized in that: The sliding cover (3) is provided with a guide surface (33), and the guide surface (33) slides and presses the roller part (12) to trigger the micro switch (1).

9. The protection switch assembly according to claim 7, characterized in that: A limiting member (21) is provided at one end of the pulling member (2), and a third connecting portion (34) adapted to the limiting member (21) is provided on the sliding cover (3), and the limiting member (21) abuts against the third connecting portion (34) to drive the sliding cover (3) to slide.

10. A drum dryer, characterized in that: It comprises a protection switch assembly as described in any one of claims 1 to 9.

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