Resistance protection mechanism and clothes airing machine

Abstract

The utility model provides a resistance protection mechanism and a clothes airing machine. The resistance protection mechanism comprises a support, a roller, an elastic piece and a microswitch, the support comprises two extending plate sections arranged at intervals and a touch plate section, the touch plate section is connected with the same ends of the two extending plate sections, and a first mounting hole and a second mounting hole are formed in the two ends of each extending plate section respectively; the roller is rotatably arranged between the two first mounting holes, the roller and the touch plate section are arranged at intervals, a steel wire rope of the clothes airing machine penetrates through the position between the roller and the touch plate section and acts on the roller, and the two second mounting holes are used for mounting a rotating shaft of a shell of the clothes airing machine; the elastic piece is used for providing an acting force to enable the touch plate section to extrude and touch the microswitch; a limiting structure is arranged at the end, provided with the second mounting hole, of the extension plate section and makes contact with the shell for limiting. According to the utility model, the problem that the resistance protection mechanism of the clothes airing machine in the prior art is easy to fail is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of household electrical appliances, and in particular to an obstruction protection mechanism and a clothes drying machine. Background Art

[0002] Clothes are indispensable in people's daily life. People will wash and dry their clothes after wearing them. Traditional clothes drying racks are usually hung high up and require users to hang them manually, which is inconvenient to use. With the improvement of living standards, clothes drying machines have gradually replaced traditional clothes drying racks and become a common household drying tool, which greatly facilitates people's lives.

[0003] In order to prevent the clothes drying rack from failing to stop immediately when encountering an obstacle during the descent process, which poses a potential hazard to the user, an obstruction protection mechanism is provided on the clothes drying machine in the prior art. The obstruction protection mechanism includes an obstruction bracket, a torsion spring and a micro switch. Under the action of the torsion spring, one end of the obstruction bracket is pressed against the micro switch to close the micro switch and stop the clothes drying machine. Under normal circumstances, the steel wire rope of the clothes drying machine is kept taut, forcing the obstruction bracket to overcome the action of the torsion spring and swing away from the micro switch, thereby closing the micro switch and allowing the clothes drying machine to work normally. However, in the existing obstruction protection mechanism, the obstruction bracket is prone to excessively press the micro switch, causing the micro switch to be blocked and fail, resulting in the clothes drying machine being unable to work normally.

[0004] As can be seen from the above, in the prior art, there is a problem that the obstruction protection mechanism of the clothes drying machine is prone to failure. Utility Model Content

[0005] The main purpose of the utility model is to provide an obstruction protection mechanism and a clothes drying machine, so as to solve the problem that the obstruction protection mechanism of the clothes drying machine in the prior art is easy to fail.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, an obstruction protection mechanism is provided, including a bracket, a roller, an elastic member and a micro switch, the bracket includes two extension plate sections arranged at intervals, and a touch plate section, the touch plate section is respectively connected to the same end of the two extension plate sections, and a first mounting hole and a second mounting hole are respectively opened at both ends of the extension plate section, the roller is rotatably arranged between the two first mounting holes and is arranged at intervals with the touch plate section, the steel wire rope of the clothes drying machine passes through between the roller and the touch plate section and acts on the roller, the two second mounting holes are used to install the rotating shaft of the shell of the clothes drying machine; the elastic member is used to provide a force to make the touch plate section squeeze and touch the micro switch; a limiting structure is arranged at one end of the extension plate section having the second mounting hole, and the limiting structure contacts with the shell for limiting.

[0007] Furthermore, the limiting structure is a boss protruding toward the shell.

[0008] Furthermore, the bracket also includes a connecting plate section, and the connecting plate section is respectively connected to one end of the two extending plate sections having the second mounting hole.

[0009] Furthermore, the extended plate section is L-shaped, and the first mounting hole is located at a bend of the extended plate section.

[0010] Further, the two extended plate segments are symmetrically arranged, and along a direction away from the triggering plate segment, a distance between at least a portion of the two extended plate segments gradually decreases.

[0011] Furthermore, the elastic member is a torsion spring, and the bracket also includes a pressure plate section, which is respectively connected to the two extension plate sections and located between the two ends of the extension plate sections. The torsion spring is sleeved on the rotating shaft, and one end of the torsion spring abuts against the pressure plate section, and the other end abuts against the shell.

[0012] Furthermore, a step is provided in the first mounting hole, and the obstruction protection mechanism also includes a mother-and-child rivet, and the roller is rotatably arranged between the two first mounting holes through the mother-and-child rivet.

[0013] According to another aspect of the utility model, a clothes drying machine is provided, comprising the above-mentioned obstruction protection mechanism.

[0014] Furthermore, the clothes drying machine also includes a shell, the micro switch is installed on the shell, and the bracket is rotatably connected to the rotating shaft of the shell.

[0015] Furthermore, there are two obstruction protection mechanisms, which are respectively located at two ends of the shell.

[0016] By applying the technical solution of the utility model, the obstruction protection mechanism includes a bracket, a roller, an elastic member and a micro switch. The bracket includes two extension plate sections arranged at intervals, and a touch plate section. The touch plate section is respectively connected to the same end of the two extension plate sections. The two ends of the extension plate section are respectively provided with a first mounting hole and a second mounting hole. The roller is rotatably arranged between the two first mounting holes and is arranged at intervals with the touch plate section. The steel wire rope of the clothes drying machine passes between the roller and the touch plate section and acts on the roller. The two second mounting holes are used to install the rotating shaft of the housing of the clothes drying machine. ; The elastic member is used to provide a force to make the touch plate segment squeeze and touch the micro switch; a limiting structure is provided at one end of the extension plate segment having the second mounting hole, and the limiting structure contacts and limits the shell. In this way, by providing a limiting structure at one end of the extension plate segment close to the rotating shaft, the touch plate segment is stopped by the limiting knot after rotating a certain angle and squeezing and touching the micro switch, preventing the touch plate segment from excessively squeezing the micro switch and causing the micro switch to fail, thereby ensuring the normal operation of the obstruction protection mechanism, and solving the problem that the obstruction protection mechanism of the clothes drying machine in the prior art is prone to failure. In addition, the limiting structure is provided at one end of the extension plate segment close to the rotating shaft, and the limiting structure can achieve the limiting effect without a large volume, thereby reducing the manufacturing cost and minimizing the risk of interference with other components. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 A schematic structural diagram showing an angle of an obstruction protection mechanism in a specific embodiment of the utility model;

[0019] Figure 2 A schematic structural diagram showing another angle of the obstruction protection mechanism in a specific embodiment of the utility model;

[0020] Figure 3 The schematic diagram shows the structure of the connection between the resistance protection mechanism and the housing in a specific embodiment of the utility model.

[0021] The above drawings include the following reference numerals:

[0022] 10. Bracket; 11. Extended plate section; 111. First mounting hole; 112. Second mounting hole; 12. Touch plate section; 13. Connecting plate section; 14. Pressure plate section; 20. Roller; 30. Elastic member; 40. Micro switch; 50. Limiting structure; 60. Mother-and-child rivet; 70. Housing; 71. Rotating shaft. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0025] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0026] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0027] In order to solve the problem that the obstruction protection mechanism of the clothes drying machine in the prior art is easy to fail, the utility model provides an obstruction protection mechanism and a clothes drying machine. Among them, the following clothes drying machine includes the following obstruction protection mechanism.

[0028] like Figures 1 to 3 As shown, the obstruction protection mechanism includes a bracket 10, a roller 20, an elastic member 30 and a micro switch 40. The bracket 10 includes two extended plate sections 11 arranged at intervals, and a touch plate section 12. The touch plate section 12 is connected to the same end of the two extended plate sections 11. The two ends of the extended plate section 11 are respectively provided with a first mounting hole 111 and a second mounting hole 112. The roller 20 is rotatably arranged between the two first mounting holes 111 and is arranged at intervals with the touch plate section 12. The steel wire rope of the clothes drying machine passes between the roller 20 and the touch plate section 12 and acts on the roller 20. The two second mounting holes 112 are used to install the rotating shaft 71 of the housing 70 of the clothes drying machine. The elastic member 30 is used to provide a force to make the touch plate section 12 squeeze and touch the micro switch 40. A limiting structure 50 is provided at one end of the extended plate section 11 having the second mounting hole 112, and the limiting structure 50 contacts the housing 70 for limiting.

[0029] By arranging the limiting structure 50 at one end of the extension plate segment 11 close to the rotating shaft 71, the touch plate segment 12 is stopped by the limiting knot after rotating a certain angle and pressing the touch micro switch 40, so as to prevent the touch plate segment 12 from excessively pressing the micro switch 40 and causing the micro switch 40 to fail, thereby ensuring the normal operation of the obstacle protection mechanism. In addition, by arranging the limiting structure 50 at one end of the extension plate segment 11 close to the rotating shaft 71, the limiting structure 50 can achieve the limiting function without a large volume, thereby reducing the manufacturing cost and minimizing the risk of interference with other components.

[0030] It can be understood that, in this embodiment, the two first mounting holes 111 and the two second mounting holes 112 are arranged in upper and lower concentric circles.

[0031] Specifically, the two ends of the extension plate segment 11 are a first end and a second end, the touch plate segment 12 is connected to the first end of the extension plate segment 11, the first mounting hole 111 is located near the first end of the extension plate segment 11, and the second mounting hole 112 is located at the second end of the extension plate segment 11. It can be understood that the second end of the extension plate segment 11 is the rotation end of the bracket 10.

[0032] In this embodiment, the two extension plate segments 11 and the touch plate segment 12 are U-shaped as a whole, and the two extension plate segments 11 are arranged at intervals from top to bottom and their projections along the arrangement direction overlap. The two extension plate segments 11 are sleeved on the rotating shaft 71 of the housing 70 through the second mounting holes 112, so as to be rotatably connected to the housing 70. Furthermore, the extension plate segment 11 and the touch plate segment 12 are integrally formed, thereby improving the structural strength of the bracket 10.

[0033] In this embodiment, the limiting structure 50 is a boss protruding toward the housing 70. Through the above arrangement, the limiting structure 50 and the housing 70 can have a larger contact area, thereby ensuring the limiting effect. Of course, the limiting structure 50 is not limited to the above structure, and can also be other types of structures such as limiting columns and limiting ribs, which can be selected according to actual needs.

[0034] like Figures 1 to 3 As shown, the bracket 10 also includes a connecting plate segment 13. The connecting plate segment 13 is respectively connected to one end of the two extension plate segments 11 having the second mounting hole 112. Specifically, the connecting plate segment 13 is a vertical plate segment. By setting the connecting plate segment 13, the second ends of the two extension plate segments 11 are connected and fixed together, so that the upper and lower second mounting holes 112 can better meet the concentricity requirements and are easy to assemble. Further, in order to avoid interference with other components, the connecting plate segment 13 is located on the side away from the shell 70, for example, it is arranged opposite to the limiting structure 50. Further, the connecting plate segment 13, the extension plate segment 11 and the touch plate segment 12 are integrally formed, thereby improving the structural strength of the bracket 10.

[0035] In this embodiment, the extension plate segment 11 is L-shaped, and the first mounting hole 111 is located at the bend of the extension plate segment 11. Specifically, the extension plate segment 11 includes a first segment and a second segment that are bent in sequence, the extension end of the first segment is the first end of the extension plate segment 11, and the extension end of the second segment is the second end of the extension plate segment 11. The first mounting hole 111 is located at the connection between the first segment and the second segment. It can be understood that the bending direction of the extension plate segment 11 is toward the housing 70, so that the touch plate segment 12 can press and touch the micro switch 40.

[0036] In this embodiment, the two extension plate segments 11 are symmetrically arranged, and the distance between at least a portion of the two extension plate segments 11 gradually decreases in the direction away from the touch plate segment 12. Specifically, the two extension plate segments 11 are symmetrically arranged up and down, the first sections of the two extension plate segments 11 are parallel, and the second sections of the two extension plate segments 11 gradually approach each other in the direction close to the second end, and then are arranged in parallel to adapt to the length of the rotating shaft 71 and the roller 20.

[0037] like Figure 1 and Figure 3As shown, in this embodiment, the elastic member 30 is a torsion spring, the bracket 10 further includes a pressure plate segment 14, the pressure plate segment 14 is respectively connected to the two extension plate segments 11 and is located between the two ends of the extension plate segment 11, the torsion spring is sleeved on the rotating shaft 71, one end of the torsion spring abuts against the pressure plate segment 14, and the other end abuts against the housing 70. Of course, the elastic member 30 can also be other types of structures, as long as it can provide a pre-tightening force for the touch plate segment 12 to press and touch the micro switch 40.

[0038] like Figures 1 to 3 As shown, in this embodiment, the first mounting hole 111 has a step, and the obstacle protection mechanism also includes a mother-and-child rivet 60, and the roller 20 is rotatably arranged between the two first mounting holes 111 through the mother-and-child rivet 60. Specifically, the mother-and-child rivet 60 includes a rod body with a rivet cap and an externally threaded rod with a rivet cap, and the rod body with the rivet cap extends from one first mounting hole 111 into between the two extension plate segments 11, and the roller 20 is sleeved on the rod body, and the externally threaded rod with the rivet cap passes through the other first mounting hole 111, and the rod body has an internal thread, and the externally threaded rod is threadedly connected to the rod body, and the rivet caps of both are limited by the step stop. By providing the mother-and-child rivet 60, it is possible to avoid deformation of the bracket 10 under stress during riveting, thereby improving assembly efficiency and reducing manufacturing costs.

[0039] The present application also provides a clothes drying machine, comprising the above-mentioned obstruction protection mechanism.

[0040] like Figure 3 As shown, the clothes drying machine further includes a housing 70 , the micro switch 40 is mounted on the housing 70 , and the bracket 10 is rotatably connected to a rotating shaft 71 of the housing 70 .

[0041] Furthermore, the clothes drying machine further includes a motor, a winding wheel and a clothes drying rack, one end of the wire rope is connected and fixed to the winding wheel, and the other end is connected and fixed to the clothes drying rack, the motor is arranged on the housing 70 and is drivingly connected to the winding wheel, thereby driving the winding wheel to rotate, so that the wire rope is wound around the winding wheel or detached from the winding wheel. There are two winding wheels, and the two winding wheels are located at the left and right ends of the housing 70.

[0042] In this embodiment, the obstruction protection mechanism is provided corresponding to the winding wheel, so there are two obstruction protection mechanisms, which are respectively located at the two ends of the housing 70. Specifically, the obstruction protection mechanism is provided on the side of the winding wheel, and the housing 70 is provided with a notch correspondingly, so that the wire rope can pass through the notch between the roller 20 and the trigger plate segment 12 and act on the roller 20.

[0043] During the downward movement of the clothes drying rack, the obstruction protection mechanism can control the clothes drying rack to stop running when encountering an obstruction. Specifically, the steel wire rope passes through one side of the roller 20, and the torsion spring provides a pre-tightening force to the bracket 10, so that the touch plate section 12 of the bracket 10 squeezes and touches the micro switch 40, and the micro switch 40 is in an open circuit state. When the steel wire rope is tightened by gravity, it will squeeze the roller 20 and drive the bracket 10 to rotate in a direction away from the micro switch 40, and the touch plate section 12 will no longer squeeze and touch the micro switch 40, so that the micro switch 40 is in a closed state. The micro switch 40 is electrically connected to the controller of the clothes drying rack. The controller determines whether the clothes drying rack encounters an obstacle through the on and off state of the micro switch 40, so as to control the clothes drying rack to stop or restart.

[0044] From the above description, it can be seen that the above embodiment of the utility model achieves the following technical effects: by setting the limiting structure 50 at one end of the extension plate segment 11 close to the rotating shaft 71, the touch plate segment 12 is stopped by the limiting knot after rotating a certain angle and pressing the touch micro switch 40, preventing the touch plate segment 12 from excessively pressing the micro switch 40 and causing the micro switch 40 to fail, thereby ensuring the normal operation of the obstacle protection mechanism. In addition, by setting the limiting structure 50 at one end of the extension plate segment 11 close to the rotating shaft 71, the limiting structure 50 can achieve the limiting effect without a large volume, thereby reducing the manufacturing cost and minimizing the risk of interference with other components.

[0045] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0046] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0047] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An obstacle protection mechanism, characterized in that: The invention comprises a bracket (10), a roller (20), an elastic member (30) and a micro switch (40); the bracket (10) comprises two extended plate sections (11) arranged at intervals, and a touch plate section (12); the touch plate section (12) is respectively connected to the same end of the two extended plate sections (11); two ends of the extended plate section (11) are respectively provided with a first mounting hole (111) and a second mounting hole (112); the roller (20) is rotatably arranged between the two first mounting holes (111) and is spaced apart from the touch plate section (12). The steel wire rope of the clothes drying machine is arranged to pass between the roller (20) and the touch plate section (12) and act on the roller (20); the two second mounting holes (112) are used to mount the rotating shaft (71) of the housing (70) of the clothes drying machine; the elastic member (30) is used to provide a force to cause the touch plate section (12) to squeeze and touch the micro switch (40); a limiting structure (50) is arranged at one end of the extension plate section (11) having the second mounting hole (112), and the limiting structure (50) contacts the housing (70) for limiting.

2. The obstruction protection mechanism according to claim 1, characterized in that: The limiting structure (50) is a boss protruding toward the housing (70).

3. The obstruction protection mechanism according to claim 1, characterized in that: The bracket (10) further comprises a connecting plate segment (13), wherein the connecting plate segment (13) is respectively connected to one end of the two extending plate segments (11) having the second mounting hole (112).

4. The obstruction protection mechanism according to claim 1, characterized in that: The extended plate section (11) is L-shaped, and the first mounting hole (111) is located at a bend of the extended plate section (11).

5. The obstruction protection mechanism according to claim 1, characterized in that: The two extension plate segments (11) are symmetrically arranged, and along a direction away from the touch plate segment (12), the distance between at least a portion of the two extension plate segments (11) gradually decreases.

6. The obstruction protection mechanism according to claim 1, characterized in that: The elastic member (30) is a torsion spring, and the bracket (10) further includes a pressure-bearing plate segment (14), the pressure-bearing plate segment (14) is respectively connected to the two extension plate segments (11) and is located between the two ends of the extension plate segments (11), the torsion spring is sleeved on the rotating shaft (71), one end of the torsion spring abuts against the pressure-bearing plate segment (14), and the other end abuts against the shell (70).

7. The obstruction protection mechanism according to claim 1, characterized in that: The first mounting hole (111) has a step therein, and the obstruction protection mechanism further comprises a mother-and-child rivet (60), and the roller (20) is rotatably arranged between the two first mounting holes (111) via the mother-and-child rivet (60).

8. A clothes drying machine, characterized in that: The invention comprises the obstruction protection mechanism as claimed in any one of claims 1 to 7.

9. The clothes drying machine according to claim 8, characterized in that: The clothes drying machine further comprises a housing (70), the micro switch (40) is mounted on the housing (70), and the bracket (10) is rotatably connected to a rotating shaft (71) of the housing (70).

10. The clothes drying machine according to claim 8, characterized in that: There are two obstruction protection mechanisms, and the two obstruction protection mechanisms are respectively located at two ends of the shell (70).

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