Limiting mechanism and clothes airing machine

Abstract

The utility model discloses a limit mechanism and airing machine relates to airing equipment technical field, the limit mechanism includes base, first trigger piece and second trigger piece, the base is equipped with limit subassembly, limit subassembly on the base defines arc limit channel, first trigger piece is rotatablely installed on the base, second trigger piece is rotatablely installed on the base, and second trigger piece is rotatablely installed on the base. A first triggering part is arranged on the periphery of the first triggering piece in a protruding mode, the second triggering piece is coaxially connected with the first triggering piece, a second triggering part is arranged on the periphery of the second triggering piece in a protruding mode, the second triggering piece can coaxially rotate relative to the first triggering piece, and therefore the distance between the first triggering part and the second triggering part is adjusted. The first triggering part and the second triggering part are used for triggering the limiting assembly respectively so as to limit a first limit position and a second limit position of an airing rod of the clothes airing equipment respectively. The limiting mechanism is simpler and more compact in overall structure, the material cost and the production cost of the clothes airing equipment can be reduced, the disassembly and assembly efficiency of the clothes airing equipment can be improved, and a user can use the clothes airing equipment conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of clothes airing equipment, especially to a limiting mechanism and clothes airing machine. BACKGROUND

[0002] Electric lifting clothes airing rod, also known as electric clothes hanger or smart clothes hanger, is a kind of convenient equipment in modern home life, which generally realizes the lifting of airing rod by the way of motor driving, saves time and effort.

[0003] At present, part of electric lifting clothes airing rod on the market also has intelligent induction function, can automatically induce the height position of airing rod, and drives the movement of airing rod to the preset height position under different operation instructions. For example, the upper limit position and the lower limit position of the lifting of airing rod are detected by limit switch respectively and the movement of power unit is controlled to stop, and the lifting process of airing rod is completed. However, in the actual use process, the electric lifting clothes airing rod is limited by the specific installation position, or the difference of seasonal light, and even the influence of different user's use habits, and the user's requirement for the height position of the electric lifting clothes airing rod in different states may be different, and the structure of this type of electric lifting clothes airing rod is relatively complex, the number of parts and materials is relatively more, which brings great inconvenience to the height adjustment process of airing rod in different states, and it is difficult to meet the daily adjustment demand of the user. UTILITY MODEL CONTENTS

[0004] The purpose of the embodiment of the utility model is to provide a limiting mechanism and clothes airing machine, which can solve the above problems existing in the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] In the first aspect, a limiting mechanism is provided, comprising:

[0007] The base is provided with a limiting assembly, and the limiting assembly defines an arc-shaped limiting channel on the base;

[0008] The first trigger piece is rotatably installed on the base, and the outer peripheral part of the first trigger piece is provided with a first trigger part;

[0009] The second trigger piece is coaxially connected with the first trigger piece, the outer peripheral part of the second trigger piece is provided with a second trigger part, the first trigger part and the second trigger part are both in the limiting channel, and the second trigger piece can rotate coaxially relative to the first trigger piece, so as to adjust the distance between the first trigger part and the second trigger part;

[0010] The first trigger part and the second trigger part are used for triggering the limiting assembly respectively.

[0011] As an optional implementation, the first trigger is provided with a first locking structure, and the second trigger is provided with a second locking structure, wherein one of the first locking structure and the second locking structure is arranged around the rotation center of the second trigger.

[0012] The first locking structure and the second locking structure have a locked state and a released state. In the locked state, the first locking structure and the second locking structure are fixedly engaged. In the released state, the first locking structure and the second locking structure can move relative to each other around the rotation center of the second trigger.

[0013] As an optional implementation, one of the first locking structure and the second locking structure is configured as a limiting groove, and the other is configured as a locking bolt. The limiting groove is arranged around the rotation center of the second trigger, and the screw of the locking bolt can movably pass through the limiting groove.

[0014] In the locked state, the screw and the head of the locking bolt apply a mutually abutting locking force to the first trigger and the second trigger, respectively. In the released state, the head of the locking bolt releases the first trigger or the second trigger, so that the screw of the locking bolt can move along the limiting groove.

[0015] As an optional implementation, the first trigger member has a first through hole extending through its opposite sides, and the side of the first trigger member opposite to the base also has a first rotating shaft protruding along the first through hole;

[0016] The second trigger has a second through hole that matches the first rotating shaft, and the second trigger is rotatably sleeved on the first rotating shaft through the second through hole;

[0017] The base is provided with a second rotating shaft that matches the first through hole, and the first trigger is rotatably sleeved on the second rotating shaft through the first through hole.

[0018] As an optional implementation, a limiting member is further provided between the base and the first trigger member. One end of the limiting member is fixedly installed on the base, and the other end of the limiting member passes through the first trigger member and forms a limiting portion.

[0019] The limiting part abuts against the side of the first trigger member away from the base, restricting the axial movement of the first trigger member.

[0020] As an optional implementation, the limiting part also abuts against the side of the second trigger member away from the base, restricting the axial movement of the second trigger member.

[0021] As an optional implementation, a transmission gear is provided on the base;

[0022] The first trigger is configured as an internal gear disk, which has a plurality of internal teeth arranged around its rotation center, and the transmission gear meshes with the internal teeth for transmission.

[0023] As an optional implementation, the limiting component includes:

[0024] First limit switch; and

[0025] A second limit switch is disposed on the base at a distance from the first limit switch. The first limit switch and the second limit switch define the limiting channel. The first triggering part is used to trigger the first limit switch, and the second triggering part is used to trigger the second limit switch.

[0026] As an optional implementation, it also includes:

[0027] A worm gear is disposed within the base, and the worm gear is provided with blades;

[0028] The worm gear meshes with the worm and is connected to the first trigger element in a transmission manner;

[0029] The base has heat dissipation vents positioned corresponding to the fan blades.

[0030] Secondly, a clothes drying rack is provided, comprising:

[0031] The limiting mechanism as described in the first aspect;

[0032] The power unit is mounted on the base; and

[0033] A winding reel is rotatably mounted on the base. The winding reel is connected to the first trigger and the power unit respectively, so that the power unit can drive the winding reel and the first trigger to rotate. A traction rope is wound on the winding reel, and a drying rod is connected to the end of the traction rope away from the winding reel.

[0034] The beneficial effects of this utility model are as follows: the first trigger and the second trigger of the limiting mechanism are coaxially coupled, so that the first trigger and the second trigger can be adjusted to move and adjust the distance between them to control the height position of the drying rod in different states. Only the relative rotation of the second trigger on the first trigger is required. The operation process is simple and quick, and the first trigger and the second trigger can be quickly adjusted, which is convenient for users to adjust and use in daily life.

[0035] The second trigger is directly and rotatably mounted on the first trigger, with no additional components between them for transmission. This makes the overall structure of the limiting mechanism simpler and more compact. Besides reducing material and production costs, this also improves the efficiency of assembling and disassembling the clothes drying equipment. Furthermore, the simple structure allows for better space utilization in practical applications, providing users with more operating space, reducing the difficulty of adjusting the height of the drying rod, and mitigating the risks of equipment damage and user injury. This facilitates the widespread adoption of clothes drying equipment. Attached Figure Description

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0037] Figure 1 This is one of the schematic diagrams of the limiting mechanism structure described in the embodiment of this utility model;

[0038] Figure 2 This is a second schematic diagram of the limiting mechanism structure described in this utility model embodiment;

[0039] Figure 3 This is one of the exploded views of the limiting mechanism described in the embodiments of this utility model;

[0040] Figure 4 This is the second exploded view of the limiting mechanism described in the embodiment of this utility model;

[0041] Figure 5 This is the third exploded view of the limiting mechanism described in the embodiment of this utility model;

[0042] Figure 6 This is a schematic diagram of the internal structure of the limiting mechanism described in an embodiment of the present utility model;

[0043] Figure 7 This is a top view of the limiting mechanism described in an embodiment of the present utility model;

[0044] Figure 8 for Figure 7 BB direction sectional view.

[0045] In the diagram: 10. Base; 11. Second rotating shaft; 12. Transmission gear; 13. Heat dissipation vent; 14. Scale line; 20. Limiting component; 21. First limit switch; 22. Second limit switch; 30. First trigger; 31. First trigger part; 32. First locking structure; 321. Screw; 322. Screw head; 33. First through hole; 34. First rotating shaft; 35. Boss; 36. Accommodating cavity; 361. Internal gear; 40. Second trigger; 41. Second trigger part; 42. Second locking structure; 43. Second through hole; 50. Limiting component; 51. Limiting part; 60. Worm; 61. Fan blade; 70. Worm wheel; 80. Power unit; 90. Winding reel; 100. Traction rope. Detailed Implementation

[0046] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model are further described in detail below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0047] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] As can be seen from the background technology, electric lifting clothes drying racks, also known as electric clothes racks or smart clothes racks, are a convenient device in modern home life. They are generally driven by electricity to realize the automatic raising and lowering of the drying rack.

[0050] Some electric clothes drying racks on the market now feature intelligent sensing capabilities. These racks can automatically detect the height of the drying rack and drive it to a preset height position under different operating commands. For example, limit switches and position sensors determine the height of the drying rack in different states. After the rack reaches the corresponding height, a triggering component linked to the rack or its power unit detects the current height. Finally, the limit switch (or position sensor, etc.) transmits the detected data to the electric clothes drying rack's control system, which then controls the power unit to stop movement and perform other related actions, completing the raising and lowering process of the clothes drying rack.

[0051] However, in actual use, electric clothes drying racks are limited by specific installation locations, seasonal sunlight differences, and even different user habits. Users may have different requirements for the height of the electric clothes drying rack in different states. Moreover, this type of electric clothes drying rack has a relatively complex structure and a relatively large number of parts and materials, which brings great inconvenience to the height adjustment process of the drying rack in different states and makes it difficult to meet the daily adjustment needs of users.

[0052] In view of this, this embodiment provides a limiting mechanism that can be applied to clothes drying equipment. The purpose of this limiting mechanism is to ensure that the clothes drying machine can stop accurately and stably at a preset position during the lifting and lowering process, thereby avoiding equipment damage or safety hazards caused by excessive lifting and lowering. Furthermore, through a simple structure and operation method, it solves the problem of the difficulty in adjusting the height position of the drying rod of the clothes drying equipment under different states.

[0053] Please refer to the instruction manual attached. Figures 1-5 The limiting mechanism mainly includes a base 10. It should be understood that the base 10, as the basic support part of the limiting mechanism, is usually fixedly installed on the main structure of the clothes drying machine (such as the main body housing) in the actual application scenario of the clothes drying equipment. The main function of the base 10 is to provide a stable support platform to ensure that the relevant components in the limiting mechanism can be accurately and reliably installed in the clothes drying equipment, so that the relevant components can cooperate with each other to provide a stable clothes drying rod limiting function.

[0054] To ensure the base 10 provides stable support, it is typically made of a robust metal material (such as aluminum alloy, stainless steel, or high-strength steel) to guarantee good strength and durability. Of course, the base 10 in this embodiment can also be made of other types of materials such as plastic; this embodiment does not impose strict limitations or requirements on this.

[0055] Specifically, a limiting component 20 is provided on the base 10. The limiting component 20 defines an arc-shaped limiting channel on the base 10. In the actual application scenario of the clothes drying equipment, the limiting component 20 is mainly used to limit the lifting limit position of the drying rod. In this embodiment, the limiting component 20 can, but is not limited to, use mechanical limiting, electromagnetic limiting, photoelectric limiting and other methods to constrain and limit the drying rod.

[0056] For example, in an embodiment where the limiting component 20 uses a mechanical limiting method, the limiting component 20 can be, but is not limited to, a physical limiting structure such as a limiting rod, a limiting block, or a limiting groove. When the clothes drying rack's drying rod rises or falls to a preset position, the limiting component 20 can abut against related components that are linked to the drying rod, preventing the drying rod from continuing to move in the corresponding direction. Simultaneously, it can send a stop signal to the control system of the clothes drying equipment by obstructing the drying rod, thereby stopping the drying rod at the position blocked by the limiting component 20, thus achieving the limiting function of the drying rod. In an embodiment where the limiting mechanism uses an electromagnetic limiting method, the limiting component 20 can be, but is not limited to, an electromagnetic element such as an electromagnet or a Hall sensor. It is important to note that in the embodiment where the limiting component 20 is an electromagnet, metal parts need to be installed on the relevant components of the clothes drying device that are linked to the clothes drying rod. When the clothes drying rod rises or falls to the preset position, the metal parts approach the electromagnet, and the electromagnet, when energized, generates a magnetic field, attracting the metal parts and bringing them into close contact with the electromagnet, thus preventing the clothes drying rod from rising or falling further and achieving the limiting function of the clothes drying rod. In the embodiment where the limiting component 20 is a Hall sensor, magnets need to be installed on the relevant components of the clothes drying device that are linked to the clothes drying rod. When the clothes drying rod rises or falls to the preset position, the magnets will also be positioned close to the Hall sensor and change their magnetic field, triggering the Hall sensor to emit a signal. Upon receiving the corresponding signal, the control system will control the power unit 80 to stop operating. In the embodiment where the limiting component 20 uses a photoelectric limiting method, the limiting component 20 can be, but is not limited to, a photoelectric switch, a reflector, etc. In this embodiment, the relevant components of the clothes drying device linked to the clothes drying rod need to be equipped with corresponding reflectors or photoelectric switches, depending on whether the limiting component 20 is a photoelectric switch or a reflector. Thus, when the clothes drying rack is raised or lowered to the preset position, the reflector will reflect the light emitted by the photoelectric switch and trigger the photoelectric switch to send a signal. After receiving the corresponding signal, the control system will control the power unit 80 to stop raising or lowering.

[0057] It is worth noting that the limiting component 20 should provide at least two limiting positions in the actual application scenario of the clothes drying equipment. These two limiting positions are used to limit the lifting and lowering stroke of the drying rod and serve as the two extreme positions of the drying rod in the lifting and lowering stroke. Of course, in some embodiments, the limiting component 20 can also provide more than two limiting positions so that the drying rod can stay at different height positions in different states, further meeting the different usage needs of users.

[0058] Based on the above basic structure, please continue to refer to the appendix. Figures 1-5 The limiting mechanism also includes a first trigger 30 and a second trigger 40. It should be noted that in the actual application scenario of the clothes drying equipment, the first trigger 30 and the second trigger 40 serve as components that are linked to the lifting and lowering movement of the drying rod. Alternatively, it can be understood that the first trigger 30 and the second trigger 40 are driven by the power unit 80 during the lifting and lowering movement of the drying rod. When the drying rod is raised or lowered to a preset position, the first trigger 30 and the second trigger 40 can cooperate with the limiting component 20 in ways including but not limited to the aforementioned methods, thereby achieving the purpose of limiting and constraining the drying rod.

[0059] Therefore, it is understood that the first trigger 30 and the second trigger 40 may be equipped with corresponding physical limit structures, electromagnetic trigger components, photoelectric trigger components, etc., depending on the type of the limit component 20. This embodiment will not impose specific limitations or requirements for the time being.

[0060] Specifically, in the actual application scenario of the clothes drying equipment, the first trigger 30 and the second trigger 40 are both configured to be linked with the power unit 80 of the clothes drying equipment so that they rotate on the base 10 during the process of the power unit 80 driving the drying rod to move up and down. Therefore, the first trigger 30 in this embodiment is rotatably mounted on the base 10 for transmission cooperation with the power unit 80 of the clothes drying equipment. Thus, during the process of the clothes drying equipment driving its drying rod to move up and down, the first trigger 30 rotates forward or backward relative to the base 10 according to the upward or downward movement of the drying rod.

[0061] Furthermore, the outer periphery of the first trigger member 30 is provided with a first trigger part 31. During the rotation of the first trigger member 30 relative to the base 10, the first trigger part 31 moves around the rotation center of the first trigger member 30, and forms a cooperating relationship with the limiting component 20 when it moves to the preset limiting position of the limiting channel defined by the limiting component 20. It should be understood that the cooperating relationship here does not specifically refer to a physical cooperating relationship. It can also be a cooperating relationship other than the electromagnetic limiting method and photoelectric limiting method mentioned above, as long as it can trigger the cooperating relationship between the first trigger member 30 and the limiting component 20, so that the drying rod stops moving at the corresponding height position.

[0062] Following the above embodiment, the second trigger 40 is coaxially connected to the first trigger 30. The two are sequentially connected along the rotation axis of the first trigger 30. Furthermore, the outer periphery of the second trigger 40 has a protruding second trigger portion 41. Thus, the second trigger 40 can rotate relative to the base 10 as the first trigger 30 rotates, allowing the first trigger portion 31 and the second trigger portion 41 to move together around the rotation axis of the first trigger 30. In this embodiment, both the first trigger portion 31 and the second trigger portion 41 are located in a limiting channel. The first trigger 30 and the second trigger 40 are respectively used to form a cooperating relationship with different limiting positions within the limiting channel, thereby enabling the drying rack to stop at corresponding height positions. In the actual application scenario of this limiting mechanism, since the limiting channel has preset positions at different locations, for example, when the preset channel defines its two ends as two limiting positions respectively, the first trigger part 31 and the second trigger part 41 are respectively used to cooperate with the limiting positions at both ends. The first trigger part 31 and the second trigger part 41 can be adjusted by the coaxial rotation of the second trigger part 40 on the first trigger part 30. Thus, during the rotation of the second trigger part 40 with the first trigger part 30, the time from when the first trigger part 31 cooperates with one end of the limiting channel to when the second trigger part 41 cooperates with the other end of the limiting channel will change. This enables the control of the lifting and lowering time of the clothes drying rod, allowing the first trigger part 31 or the second trigger part 41 to trigger the limiting component 20 at the corresponding time of the rise or fall of the clothes drying rod, so that the clothes drying rod stops at the corresponding height position, thereby achieving the purpose of limiting the first limit position and the second limit position of the clothes drying rod of the clothes drying device.

[0063] Of course, as can be seen from the above, when the limiting component 20 forms more limiting positions in the limiting channel, and more triggers and corresponding numbers of trigger parts are used to cooperate with the limiting component 20, the limiting mechanism can also limit more stopping positions on the lifting path of the drying rod, so as to meet the different usage needs of users.

[0064] It is worth noting that, in order to ensure that the first trigger 30 and the second trigger 40 can remain within the limiting channel when they rotate relative to the base 10, the rotation centers of the first trigger 30 and the second trigger 40 are set to coincide with the center of the limiting channel.

[0065] For ease of understanding, this embodiment temporarily defines the first and second limit positions as the upward limit position and the downward limit position of the drying rod, respectively. The upward limit position refers to the highest position the drying rod can reach, and the downward limit position refers to the lowest position the drying rod can descend. In this embodiment, the first trigger 30 can be independently rotated relative to the base 10, and the second trigger 40 can be independently rotated relative to the first trigger 30, thereby adjusting the upward and downward limit positions of the drying rod to meet the needs of different installation scenarios. Therefore, it can be understood that the first trigger 30 and the base 10, as well as the second trigger 40 and the first trigger 30, both have a locked state and a released state. In the locked state, the above-mentioned components maintain a relatively stable cooperation relationship without the action of other external forces, ensuring that the upward and downward limit positions remain in the preset positions after multiple uses of the clothes drying equipment. In the released state, the above-mentioned components can be adjusted by relative rotation.

[0066] Please continue to refer to the instruction manual appendix. Figures 1-5 In one embodiment, both the first trigger 30 and the second trigger 40 are configured as disc structures to facilitate the transmission between the power unit 80 and the first trigger 30, as well as the rotation adjustment of the first trigger 30 and the second trigger 40. Of course, it is understood that in other embodiments, the first trigger 30 and the second trigger 40 may also be configured as other irregular disc-shaped structures or block-shaped structures, etc. This embodiment does not impose strict limitations or requirements on this.

[0067] In this embodiment, the first trigger 30 and the second trigger 40 can be connected by, but are not limited to, sliding connection, hinge, bearing connection, bolt fit, etc., and maintain a coaxial fit relationship to ensure that during the relative rotation adjustment of the first trigger 30 and the second trigger 40, both the first trigger part 31 and the second trigger part 41 can remain within the limiting channel, which facilitates the adjustment of the first trigger part 31 and the second trigger part 41. During the adjustment process, the user only needs to control the second trigger 40 to rotate relative to the first trigger 30 when the first trigger 30 and the second trigger 40 are in the released state. Similarly, during the adjustment of the first trigger 30, the user only needs to control the first trigger 30 to rotate on the base 10 when the first trigger 30 and the base 10 are in the released state. The operation positions for controlling the rotation of the first trigger 30 and the second trigger 40 are basically the same, and the operation process is simple and quick, which can realize the rapid adjustment of the first trigger 30 and the second trigger 40, which is convenient for the user's daily adjustment and use.

[0068] Furthermore, in this embodiment, there are no additional components between the first trigger 30 and the second trigger 40 for achieving transmission between them, making the overall structure of the limiting mechanism simpler and more compact. The second trigger 40 is directly rotatably connected to the first trigger 30, and the adjustment process is achieved directly through sliding friction between the two, effectively reducing the possibility of malfunction or damage to the first trigger 30 and the second trigger 40 during adjustment. In addition to reducing material and production costs, this also improves the assembly and disassembly efficiency of the clothes drying equipment. Moreover, the simple structure also helps to improve the space utilization of the clothes drying equipment in practical applications, freeing up more operating space for users, reducing the difficulty of adjusting the height of the drying rod, and to some extent reducing the risk of equipment damage and user injury, thus facilitating the widespread adoption of the clothes drying equipment.

[0069] It is worth mentioning that in this embodiment, both the first trigger 30 and the second trigger 40 are mounted on the base 10 in a rotating manner. Thus, the movement trajectory formed by the first trigger 31 and the second trigger 41 on the base 10 is an arc consistent with the limiting channel. This can effectively reduce the space occupied by the first trigger 31 and the second trigger 41 on the base 10, and effectively improve the space utilization rate in the application scenario of clothes drying equipment. During operation, the user only needs to twist their wrist to adjust the limiting mechanism, which minimizes the possibility of contact with other parts during the adjustment process and further reduces the risk of injury to the user during operation.

[0070] Please refer to the instruction manual attached. Figures 1-5As an optional implementation of the limiting mechanism, it can be understood from the above that, in order to achieve the purpose of relatively fixing and relatively movable adjustment of the first trigger 30 and the second trigger 40, a cooperating structure should be provided between the first trigger 30 and the second trigger 40 to achieve the above-mentioned function. Specifically, the first trigger 30 is provided with a first locking structure 32, and the second trigger 40 is correspondingly provided with a second locking structure 42. The first locking structure 32 and the second locking structure 42 are used to cooperate with each other to achieve locking and releasing of the first trigger 30 and the second trigger 40.

[0071] In this embodiment, the first locking structure 32 and the second locking structure 42 can be, but are not limited to, mechanical locking, such as locking pins or locking bolts, and locking holes are provided in or near the overlapping portion of the first trigger 30 and the second trigger 40, so that locking and releasing are achieved by the locking pin or locking bolt cooperating with the locking holes. Alternatively, the first locking structure 32 and the second locking structure 42 can also be pneumatically locked, for example, the first locking structure 32 and the second locking structure 42 can be respectively configured as a pneumatic driving device such as a cylinder and a limiting groove such as a structure that cooperates with the pneumatic driving device, so that locking and releasing are achieved by the pneumatic driving device inserting or pulling out of the limiting groove. Similarly, the first locking structure 32 and the second locking structure 42 can also be hydraulically locked, and its locking and releasing are relatively close to the above-mentioned pneumatic locking method, so this embodiment will not elaborate on or explain the hydraulic locking method in detail.

[0072] It should be noted that, in order to ensure that the first locking structure 32 and the second locking structure 42 can lock and release the first trigger 30 and the second trigger 40 when they are rotated to any position, one of the first locking structure 32 and the second locking structure 42 is arranged around the rotation center of the second trigger 40, so that the first locking structure 32 and the second locking structure 42 can form a locking relationship at any position in the direction of rotation around the rotation axis of the second trigger 40 (first trigger 30).

[0073] For ease of understanding, the first locking structure 32 and the second locking structure 42 in this embodiment have locked and released states. In the locked state, the first locking structure 32 and the second locking structure 42 are fixedly engaged, so that the first trigger 30 and the second trigger 40 are relatively fixed, and the distance between the first trigger part 31 and the second trigger part 41 is also fixed. This ensures that when the second trigger 40 rotates with the first trigger 30, the stroke of the first trigger part 31 and the second trigger part 41 triggering the limiting component 20 remains unchanged, thus ensuring that the upper limit position and lower limit position of the drying rod remain unchanged. In the released state, the first locking structure 32 and the second locking structure 42 can move relative to each other around the rotation center of the second trigger 40, allowing the second trigger 40 to rotate relative to the first trigger 30 for adjustment. After the relative rotation adjustment of the first trigger 30 and the second trigger 40 is completed, the first locking structure 32 and the second locking structure 42 can switch back to the locked state, ensuring stability during the use of the clothes drying equipment.

[0074] This embodiment, based on the structure of the first trigger 30 and the second trigger 40, adds a first locking structure 32 and a second locking structure 42. This ensures that the first trigger 30 and the second trigger 40, while employing a relatively simple mating structure, possess locking and releasing functions, thereby ensuring that both can switch to a state that meets usage requirements under different circumstances. Furthermore, this embodiment directly sets the first locking structure 32 and the second locking structure 42 on the first trigger 30 and the second trigger 40 respectively, eliminating the need for additional components outside their structures. This ensures that the limiting mechanism has a simple and compact structure. In other words, the presence of the first locking structure 32 and the second locking structure 42 will not interfere with related components in the application of the limiting mechanism to the clothes drying equipment, nor will it interfere with the user's operation, thus improving its stability without significantly affecting the structure of the limiting mechanism.

[0075] Based on the above description of the first locking structure 32 and the second locking structure 42, in one embodiment, as follows: Figures 1-5As shown, one of the first locking structure 32 and the second locking structure 42 is configured as a limiting groove. Specifically, when the limiting groove is provided on the first trigger member 30, the limiting groove extends through the opposite sides of the first trigger member 30 along its axial direction. When the limiting groove is provided on the second trigger member 40, the limiting groove extends through the opposite sides of the second trigger member 40 along its axial direction. Furthermore, the other of the first locking structure 32 and the second locking structure 42 is configured as a locking bolt. The limiting groove is positioned around the rotation center of the second trigger member 40, and the screw 321 of the locking bolt can movably pass through the limiting groove to ensure that the locking bolt remains within the limiting groove during the rotational adjustment of the second trigger member 40 relative to the first trigger member 30.

[0076] In the actual installation structure, taking the limiting groove specifically opened in the second trigger 40 as an example, the limiting groove is set around the second trigger 40 according to the adjustable angle of the second trigger 40 and the first trigger 30 to ensure the structural integrity of the second trigger 40. The screw 321 of the locking bolt is specifically connected to the first trigger 30 by screwing. After passing through the limiting groove, the screw 321 of the locking bolt forms its screw head 322 on the side of the second trigger 40 away from the first trigger 30. The width of the limiting hole is smaller than the screw head 322 of the locking bolt. In this way, the locking bolt can be screwed in and out on the first trigger 30, allowing the screw head 322 to move towards and away from the surface of the second trigger 40. When it approaches and presses against the surface of the second trigger 40, the first trigger 30 and the second trigger 40 are locked, and when they move away from the surface of the second trigger 40, they are released.

[0077] Based on the above, it can be understood that when the first locking structure 32 and the second locking structure 42 are in the locked state, the screw 321 and the screw head 322 of the locking bolt apply a mutually abutting locking force to the first trigger 30 and the second trigger 40 respectively, thereby achieving circumferential fixation of the first trigger 30 and the second trigger 40. When both are in the released state, the screw head 322 of the locking bolt releases the first trigger 30 or the second trigger 40, so that the screw 321 of the locking bolt can move along the limiting groove.

[0078] In this embodiment, the first locking structure 32 and the second locking structure 42 only require the machining of limiting grooves and threaded holes adapted to the locking bolts on the first trigger member 30 and the second trigger member 40, respectively. This maintains a simple and compact structure, meeting the design requirements of the limiting mechanism for simplicity. Production costs can be controlled accordingly, and the difficulty of disassembling and assembling the mechanism is not significantly affected. During the operation of the first locking structure 32 and the second locking structure 42, the user only needs to screw the locking bolt in and out to switch between the corresponding states, thus reducing the operational difficulty of the limiting mechanism and making it suitable for different user groups.

[0079] Of course, based on meeting the above requirements, the first locking structure 32 and the second locking structure 42 can also be respectively configured as a plurality of slots arranged around the rotation axis and a block that can engage with any slot. Alternatively, the first locking structure 32 and the second locking structure 42 can be respectively configured as a plurality of limiting holes arranged around the rotation axis and a limiting post that can engage with any limiting hole. During the adjustment process, the second trigger moves axially away from the first trigger 30, allowing the limiting post to be pulled out of the hole, thereby unlocking the first locking structure 32 and the second locking structure 42. After the adjustment is completed, the second trigger 40 is reset, and the limiting post is reinserted into the hole to restore the locking of the first trigger 30 and the second trigger 40.

[0080] It is understandable that although there are many other implementations for locking and releasing the first locking structure 32 and the second locking structure 42, the locking structure provided by the present invention can achieve a simple stepless adjustment function, allowing the drying rack to be adjusted more precisely at the upper limit position and the lower limit position.

[0081] For one specific arrangement between the base 10, the first trigger 30, and the second trigger 40, please refer to the appendix. Figures 1-5 , Figures 7-8The first trigger member 30 has a first through hole 33 extending through its opposite sides. The formation of the first through hole 33 defines the rotation axis of the first trigger member 30 on the base 10. Furthermore, a first rotating shaft 34 protrudes from the side of the first trigger member 30 away from the base 10 and is disposed along the first through hole 33. The first through hole 33 passes through both sides of the first trigger member 30 in the axial direction via the first rotating shaft 34. In practical applications, the first through hole 33 provides space for the corresponding structure on the base 10 to move through. The presence of the first rotating shaft 34 extends the length of the first through hole 33 to a certain extent, thereby improving the stability of the fit between the base 10 and the first trigger member 30. In some embodiments, in order to further extend the length of the first through hole 33, in addition to appropriately increasing the length of the first rotating shaft 34, the first trigger member 30 may also have a boss 35 on the side closer to the base 10 for providing the opening of the first through hole 33.

[0082] Following the above embodiment, the second trigger 40 has a second through hole 43 that matches the first rotating shaft 34. The second trigger 40 is rotatably sleeved on the first rotating shaft 34 through the second through hole 43. The base 10 has a protruding second rotating shaft 11 that matches the first through hole 33. The first trigger 30 is rotatably sleeved on the second rotating shaft 11 through the first through hole 33. In this embodiment, the base 10 and the first trigger 30, as well as the first trigger 30 and the second trigger 40, are connected by a shaft-hole structure. This not only achieves relative rotation between any two components with a simple structure, but also satisfies the requirement for coaxial cooperation between the first trigger 30 and the second trigger 40. The height of the second trigger 40 superimposed on the first trigger 30 can be effectively controlled, without excessively occupying the installation space inside the clothes drying equipment, which meets the compact design purpose of the limiting structure in this application.

[0083] Based on any of the above embodiments, please refer to the appendix to the instruction manual. Figures 1-5 , Figure 8 A limiting member 50 is also provided between the base 10 and the first trigger member 30. One end of the limiting member 50 is fixedly installed on the base 10, and the other end of the limiting member 50 passes through the first trigger member 30 and forms a limiting part 51. The limiting part 51 abuts against the side of the first trigger member 30 away from the base 10 to limit the axial movement of the first trigger member 30 (specifically, in the direction away from the base 10 along the axial direction) and prevent the first trigger member 30 from easily detaching from the base 10.

[0084] It is understood that the limiting member 50 and the base 10 in this embodiment can be connected by, but not limited to, threaded connection, snap-fit ​​connection, wedge tightening, bonding, welding, etc. However, it should be noted that since the first trigger member 30 (and the second trigger member 40) do not need to bear the weight of the drying rod and other external forces in actual application scenarios, they are generally made of plastic, which is weaker than metal. In addition to achieving the purpose of cost reduction and weight reduction, the use of plastic for the first trigger member 30 and the second trigger member 40 can also play a role in noise reduction and prevent the user experience from being affected by the friction between the first trigger member 30 and the base 10 during the raising and lowering of the drying rod of the clothes drying equipment. However, because of this, the first trigger 30 and the second trigger 40 (especially the first trigger 30) are easily damaged replacement parts. Therefore, in some embodiments, in order to make it easy to remove the first trigger 30 from the base for replacement, the limiting member 50 is generally used in a way that allows it to be detachably connected to the base 10. For example, the limiting member 50 is set as a bolt, so that the limiting member 50 can be installed and removed from the base 10 through a threaded connection. In addition, the head of the bolt can also block the first trigger 30 and restrict the axial movement of the first trigger 30. Setting the limiting member 50 as a bolt is relatively inexpensive in terms of both processing cost and material cost, which can well match the design intention of this utility model.

[0085] Please continue to refer to the appendix. Figures 1-5 In the embodiment described above, where the base 10 and the first trigger 30 are rotatably connected to the second rotating shaft 11 via the first through hole 33, and the first trigger 30 and the second trigger 40 are rotatably connected to the second through hole 43 via the first rotating shaft 34, one end of the limiting member 50 is specifically connected to the base 10 via the second rotating shaft 11. With the second rotating shaft 11 passing through the first through hole 33, the limiting member 50 passes through the first trigger 30, allowing the limiting member 50 to smoothly form a limiting portion 51 on the side of the first trigger 30 facing away from the base 10. In a further embodiment, the limiting member 50 can be configured as a self-tapping screw, so that a matching threaded hole is formed inside the second rotating shaft 11 by directly screwing it onto the second rotating shaft 11.

[0086] Based on the above embodiments, in one embodiment, the limiting part 51 can be further configured to extend radially along the first trigger 30 to abut against the side of the second trigger 40 away from the base 10, so that the limiting part 51 can both constrain the axial movement of the first trigger 30 and simultaneously restrict the axial movement of the second trigger 40, making the state of the first trigger 30 and the second trigger 40 on the base 10 more stable, and the axial restriction of the second trigger 40 does not need to be achieved by further setting additional constraint components, which improves the structural stability of the limiting mechanism without increasing the complexity of its structure.

[0087] Of course, in some embodiments, the limiting member 50 can also press the second trigger member 40 against the first trigger member 30 or release the second trigger member 40 on the first trigger member 30 by directly pressing or releasing the second trigger member 40 along the axial direction, thereby realizing the locking and releasing of the first trigger member 30 and the second trigger member 40 in the circumferential direction.

[0088] Based on any of the above embodiments, in order to improve the stability of the first trigger 30 and the second trigger 40 during the rotation process relative to the base 10, a transmission gear 12 is provided on the base 10. The transmission gear 12 is used to drive the power unit 80 of the clothes drying device so that when the power unit 80 drives the drying rod to rise and fall, the transmission gear 12 and the power unit 80 are linked to produce corresponding forward or reverse rotation movements.

[0089] Furthermore, the first trigger 30 is configured as an internal gear 361 disc, which can also be referred to as an internal gear 361 wheel. In one embodiment, the internal gear 361 disc has a receiving cavity 36 with its opening facing the base 10, and the transmission gear 12 is placed in the receiving cavity 36 through the opening. The internal gear 361 disc is provided with a plurality of internal teeth 361 arranged around its rotation center on the cavity wall within the receiving cavity 36, and the transmission gear 12 meshes with the internal teeth 361 for transmission. In this way, the internal gear 361 disc, as the first trigger 30, can cover the outside of the above-mentioned transmission structure, playing a certain role in dust protection, making the transmission process between the transmission gear 12 and the internal gear 361 disc more stable and reliable, and also preventing the user from coming into contact with the transmission gear 12 and the internal teeth 361 during the operation of the first trigger 30 and the second trigger 40, reducing the risk of injury to the user.

[0090] It is worth mentioning that a larger transmission ratio is suitable between the transmission gear 12 and the internal gear 361 disc, that is, the size of the first trigger 30 is much larger than the size of the transmission gear 12, so that the travel of the first trigger part 31 provided on the first trigger 30 and the second trigger part 41 provided on the second trigger 40 on the base 10 is increased, thereby improving the rotational stability of the first trigger 30 and the second trigger 40.

[0091] In one embodiment, the limiting component 20 includes a first limiting switch 21 and a second limiting switch 22, which are spaced apart on the base 10, and a limiting channel is defined between the first limiting switch 21 and the second limiting switch 22.

[0092] Understandably, the limiting assembly 20 generally consists of a detection spring (or trigger element) and a switching element. One end of the detection spring is fixed to the housing of the switching element. When the first trigger 31 or the second trigger 41 contacts the detection spring, the detection spring presses against the switch on the switching element, causing the switching element to emit a corresponding signal. The detection spring has a certain degree of elasticity, which can buffer the impact force from the first trigger 30 and the second trigger 40, protecting the switching element from damage.

[0093] Correspondingly, the first trigger part 31 and the second trigger part 41 protruding from the first trigger member 30 and the second trigger member 40 are pointer structures. Furthermore, in order to further buffer the impact force generated when the first trigger part 31 and the second trigger part 41 contact the detection spring respectively, the side of the first trigger part 31 and the second trigger part 41 that is used to contact the first limit switch 21 and the second limit switch 22 respectively is set as an inclined structure that matches the corresponding detection spring.

[0094] like Figures 1-5 , Figure 7 As shown, the first triggering unit 31 is used to trigger the first limit switch 21, and when the first triggering unit 31 triggers the first limit switch 21, the drying rod of the clothes drying device is in a first extreme position (such as the upward limit position). The second triggering unit 41 is used to trigger the second limit switch 22, and when the second triggering unit 41 triggers the second limit switch 22, the drying rod of the clothes drying device is in a second extreme position (such as the downward limit position).

[0095] By setting the limit component 20 as the first limit switch 21 and the second limit switch 22, the stopping control of the clothes drying rack at different height positions can be achieved by two independently controlled limit switches, which can effectively improve the stability of the clothes drying machine when performing the corresponding functions. At the same time, setting the limit component 20 as the first limit switch 21 and the second limit switch 22 can better define the limit channel by the space between the two.

[0096] In this embodiment, the base 10 is provided with a scale line 14 corresponding to the limiting channel on its surface, which makes it convenient for the user to adjust the distance between the first trigger part 31 and the second trigger part 41 according to actual usage needs.

[0097] In one embodiment, the limiting mechanism further includes a worm gear 70 and a worm 60 mechanism. The worm 60 is disposed within the base 10, with one end connected to the power unit 80 of the clothes drying device and the other end provided with a fan blade 61. The worm gear 70 meshes with the worm 60 and is connected to the first trigger 30 for transmission. The base 10 has a heat dissipation vent 13 whose position corresponds to the fan blade 61. During the process of the clothes drying device driving the worm 60 to rotate through the power unit 80, the worm 60 can drive the worm wheel 70 to rotate, thereby causing the worm wheel 70 (further through related transmission components) to drive the first trigger 30 (transmission gear 12) to rotate. During this process, the fan blade 61 will rotate synchronously with the worm 60, thereby disturbing the airflow inside the base 10. This allows the heat generated during the meshing transmission of the worm wheel 70 and worm 60, the movement of the power unit 80, and the operation of related components to be discharged from the base 10 through the heat dissipation port 13, preventing the internal temperature of the base 10 from becoming too high and causing deformation of the worm wheel 70 and worm 60 structure, thus ensuring the stability of its operation.

[0098] In some embodiments, the worm 60 is made of a high-strength material such as metal, while the worm wheel 70 is made of a relatively weak material such as plastic, which serves to reduce noise and improve stability.

[0099] This embodiment also provides a clothes drying rack. In this rack, the limiting mechanism provided in any of the above embodiments is used. In this embodiment, the base 10 also serves to mount the power unit 80 (such as a motor) and other related components, thereby improving the overall compactness of the clothes drying rack. The power unit 80 is specifically mounted on the base 10. In this example, the power unit 80 includes a fixed end (such as the housing of a motor) and a driving end (such as the output shaft of a motor). The power unit 80 is fixedly mounted to the outside of the base 10 through its fixed end, and the driving end of the power unit 80 can be movably inserted into the interior of the base 10 and is connected to the first trigger 30. In embodiments where the limiting mechanism also includes a worm gear 70 and worm 60 structure, the driving end of the power unit 80 is connected to the worm 60.

[0100] like Figures 1-5 , Figure 8 As shown, the clothes drying rack also includes a winding wheel 90, which is rotatably disposed inside the base 10. The winding wheel 90 is connected to the first trigger 30 and the power unit 80 respectively, so that the power unit 80 can drive the winding wheel 90 and the first trigger 30 to rotate. In the embodiment where the limiting mechanism also includes a worm gear 70 and a worm 60 structure, the outer periphery of the winding wheel 90 is provided with external teeth, which mesh with the teeth on the worm 60 for transmission. The transmission gear 12 included in the limiting mechanism is coaxially connected to the rotating shaft of the winding wheel 90 to drive the first trigger 30.

[0101] A traction rope 100 is wound on the winding reel 90. The end of the traction rope 100 away from the winding reel 90 is connected to the drying rod. The winding reel 90 is driven to rotate forward and backward by the power unit 80. During this period, the traction rope 100 wound on the winding reel 90 will be unwound or wound up by the winding reel 90, thereby achieving the purpose of raising and lowering the drying rod. At the same time, the first trigger 30 and the second trigger 40 will also rotate in the corresponding direction on the base 10, so that when the first trigger part 31 and the second trigger part 41 trigger the limit component 20, the power unit 80 is controlled by the clothes drying machine control system to stop moving, thereby realizing the drying rod stopping at the corresponding height position.

[0102] It is worth mentioning that, in this embodiment, the first trigger 30 and the second trigger 40 are preferably disposed on the outer side of the base 10, so as to facilitate the user to adjust the rotation of the first trigger 30 and the second trigger 40.

[0103] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are merely used for distinction in description and have no special meaning.

[0104] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0105] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0106] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A position limiting mechanism, characterized by, The application relates to a trigger device, which comprises: a base provided with a limiting assembly defining an arc-shaped limiting channel on the base; a first trigger rotatably mounted on the base, and a first trigger portion being protruded from the outer periphery of the first trigger; a second trigger coaxially connected with the first trigger, and a second trigger portion being protruded from the outer periphery of the second trigger, wherein the first trigger portion and the second trigger portion are both located in the limiting channel, and the second trigger is coaxially rotatable relative to the first trigger so as to adjust the distance between the first trigger portion and the second trigger portion; the first trigger portion and the second trigger portion are used for triggering the limiting assembly.

2. The position limiting mechanism of claim 1, wherein a first locking structure is arranged on the first trigger, and a second locking structure is arranged on the second trigger, wherein one of the first locking structure and the second locking structure is arranged around the rotation center of the second trigger; the first locking structure and the second locking structure have a locking state and a releasing state, wherein in the locking state, the first locking structure is fixedly matched with the second locking structure, and in the releasing state, the first locking structure and the second locking structure are relatively movable around the rotation center of the second trigger.

3. The stop mechanism of claim 2, wherein one of the first locking structure and the second locking structure is arranged as a limiting groove, and the other is arranged as a locking bolt, wherein the limiting groove is arranged around the rotation center of the second trigger, and the screw rod of the locking bolt is movably arranged through the limiting groove; in the locking state, the screw rod and the screw head of the locking bolt apply locking forces to the first trigger and the second trigger respectively, and in the releasing state, the screw head of the locking bolt releases the first trigger or the second trigger so that the screw rod of the locking bolt can move along the limiting groove.

4. The position-limiting mechanism according to claim 1, wherein the first trigger is provided with a first through hole penetrating through the opposite sides of the first trigger, and a first rotating shaft is protruded from the side of the first trigger away from the base and arranged along the first through hole; the second trigger is provided with a second through hole matched with the first rotating shaft, and the second trigger is rotatably sleeved on the first rotating shaft through the second through hole; the base is provided with a second rotating shaft matched with the first through hole, and the first trigger is rotatably sleeved on the second rotating shaft through the first through hole.

5. The stop mechanism according to any one of claims 1-4, wherein, a limiting piece is further arranged between the base and the first trigger, one end of the limiting piece is fixedly mounted on the base, and the other end of the limiting piece passes through the first trigger and forms a limiting portion; the limiting portion is arranged on the side of the first trigger away from the base, and the axial movement of the first trigger is limited.

6. The limit mechanism of claim 5, wherein, the limiting portion is also arranged on the side of the second trigger away from the base, and the axial movement of the second trigger is limited.

7. The stop mechanism of claim 1, wherein the base is provided with a transmission gear; the first trigger is arranged as an inner toothed disc, a plurality of inner teeth are arranged around the rotation center of the inner toothed disc, and the transmission gear is in mesh transmission with the inner teeth.

8. The limit mechanism of claim 1, wherein, the limiting assembly comprises: a first limiting switch; and A second limit switch is arranged at the base in a spaced-apart manner from the first limit switch, and the first limit switch and the second limit switch define the limit passage therebetween, the first trigger portion is configured to trigger the first limit switch, and the second trigger portion is configured to trigger the second limit switch.

9. The stop mechanism of any one of claims 1-4, 7-8, wherein, Further comprising: A worm is arranged in the base, and the worm is provided with a fan blade; A worm wheel is engaged with the worm and is drivingly connected with the first trigger member; The base is provided with a heat dissipation opening corresponding to the fan blade.

10. A clothes drying machine characterised in that, Comprising: The limit mechanism according to any one of claims 1-9; A power unit is mounted to the base; And A winding wheel is rotatably arranged at the base, and the winding wheel is drivingly connected with the first trigger member and the power unit respectively, so that the power unit can drive the winding wheel and the first trigger member to rotate, a traction rope is wound on the winding wheel, and one end of the traction rope away from the winding wheel is connected with a drying rod.

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