Bin door assembly and feeder

Abstract

The invention provides a bin door assembly and a feeder, and relates to the technical field of pet supplies. The bin door assembly comprises a bin door and a self-locking module, and the bin door is provided with a door shaft; the self-locking module comprises at least one stage of transmission unit; each stage of transmission unit comprises a driving transmission part and a driven transmission part, the driving transmission part is provided with a spiral tooth part, the driven transmission part is provided with a driven tooth part, and spiral teeth are meshed with the driven tooth part; when the transmission unit is in a single stage, the driven transmission piece is in transmission connection with the door shaft of the bin door; when the transmission units comprise at least two stages, in the adjacent transmission units, the driving transmission part of the transmission unit of the upper stage is in transmission connection with the driven transmission part of the transmission unit of the lower stage, and the driven transmission part of the transmission unit of the last stage is in transmission connection with the door shaft of the bin door; the lead angle of the spiral tooth part is smaller than the equivalent friction angle, and a one-way self-locking transmission pair is formed. According to the bin door assembly, the bin door locking reliability can be improved, operation is convenient, and the failure rate is low.

Description

Technical Field

[0001] The present invention relates to the technical field of pet supplies, and particularly to a bin door assembly and a feeder. Background Art

[0002] The self-locking reliability of the rotary heat preservation bin door of a pet feeder directly affects the safety and operation efficiency of the device. The traditional bin door locking mechanism mainly uses independent locking devices such as electromagnetic locks and mechanical bolts, and has the following defects:

[0003] It relies on additional power to maintain the locked state (for example, the electromagnetic lock fails when power is cut off). The mechanical bolt requires manual operation, which is inconvenient. Moreover, the locking mechanism is separated from the drive system, with a complex structure and a high failure rate. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to overcome the deficiencies in the prior art, and to provide a bin door assembly and a feeder, which can improve the locking reliability of the bin door, are convenient to operate, and have a low failure rate.

[0005] The present invention provides the following technical solutions:

[0006] In a first aspect, an embodiment of the present application provides a bin door assembly, which includes:

[0007] A bin door having a door shaft;

[0008] A self-locking module including at least one stage of transmission units; each stage of the transmission unit includes a driving transmission member and a driven transmission member, the driving transmission member has a spiral tooth portion, the driven transmission member has a driven tooth portion, and the spiral tooth meshes with the driven tooth portion; when the transmission unit is a single stage, the driven transmission member is in transmission connection with the door shaft of the bin door; when the transmission unit is at least two stages, in adjacent transmission units, the driving transmission member of the upper stage of the transmission unit is in transmission connection with the driven transmission member of the lower stage of the transmission unit, and the driven transmission member of the last stage of the transmission unit is in transmission connection with the door shaft of the bin door; wherein, the lead angle of the spiral tooth portion is less than the equivalent friction angle, forming a one-way self-locking transmission pair.

[0009] In some embodiments of the first aspect, the driving transmission member is a worm, the driven transmission member is a worm wheel, and the worm meshes with the worm wheel.

[0010] In some embodiments of the first aspect, the bin door assembly further includes a driving module, and the driving module is connected to the driving transmission member of the first stage of the transmission unit, and the driving module is used to drive the driving transmission member to rotate.

[0011] In some embodiments of the first aspect, the bin door assembly further includes:

[0012] A position detection module, the position detection module is used to detect the position of the door and generate a position signal;

[0013] A control module is electrically connected to the position detection module and the driving module respectively, and the control module is configured to output an operation signal to the driving module in response to the position signal.

[0014] In some embodiments of the first aspect, when the transmission unit has at least two stages, in adjacent transmission units, the driven transmission member of the transmission unit of the upper stage is connected to the active transmission member of the transmission unit of the lower stage through a first transmission mechanism, and the transmission ratio of the first transmission mechanism is i 1, and satisfies: i 1 is less than 1.

[0015] In some embodiments of the first aspect, the driven transmission member of the final-stage transmission unit is transmission-connected to the compartment door via a second transmission mechanism, the transmission ratio of the second transmission mechanism is i2, and satisfies: i2 is less than 1.

[0016] In some embodiments of the first aspect, in adjacent transmission units, the first transmission mechanism includes a first driving gear and a first driven gear, the first driving gear and the first driven gear are meshed, the first driving gear and the driven transmission member in the transmission unit of the previous stage are coaxially fixedly connected, and the first driven gear and the driving transmission member in the transmission unit of the next stage are coaxially fixedly connected;

[0017] And / or, the second transmission mechanism includes a second driving gear and a second driven gear, the second driving gear and the second driven gear are meshed, the second driving gear and the driven transmission member in the final stage transmission unit are coaxially fixedly connected, and the second driven gear and the door shaft of the warehouse door are coaxially fixedly connected.

[0018] In some embodiments of the first aspect, the warehouse door has a mezzanine layer, and a heat insulation layer is arranged in the mezzanine layer.

[0019] In some embodiments of the first aspect, a sealing gasket layer is provided on the inner side of the compartment door, and the sealing gasket layer is an elastic sealing gasket layer or a flexible sealing gasket layer.

[0020] In a second aspect, the present application further provides a feeder, comprising a door assembly as described in any one of the above embodiments.

[0021] The embodiments of the present invention have the following advantages:

[0022] By adopting the bin door assembly provided by the present invention, the bin door assembly realizes power transmission and self-locking through at least one-stage transmission unit. Each stage of the transmission unit is composed of a driving transmission part (helical tooth part) and a driven transmission part (driven tooth part) engaged with each other, wherein the lead angle of the helical tooth part is designed to be less than the equivalent friction angle, forming a one-way self-locking transmission pair. This enables external forces to be unable to drive the transmission chain in the reverse direction (i.e., the driven end cannot drive the driving end), thereby realizing the self-locking of the bin door. The driven transmission part of the single-stage transmission unit is linked with the door shaft, or adjacent transmission units are connected through the driving transmission part and the driven transmission part of the next stage, and the driven transmission part of the last stage is linked with the door shaft of the bin door. Power is input from the first stage, and after being decelerated and torque-increased through multiple stages, it drives the door shaft to rotate. At the same time, each stage maintains the self-locking characteristic, ensuring the reliability of locking. The driving module (such as a motor) opens or closes the bin door by rotating forward through the transmission unit; when the driving stops, the transmission unit automatically maintains its position due to the self-locking characteristic, without the need for additional locking devices (such as electromagnetic locks or bolts).

[0023] Therefore, by utilizing the self-locking characteristic of the helical teeth (lead angle < friction angle), it is possible to reliably lock the bin door without relying on external power or manual intervention, even when power is cut off or the machine stops, avoiding the risk of the traditional electromagnetic lock failing when power is cut off. At the same time, integrating the driving and locking functions into the transmission chain eliminates the need for an independent locking mechanism (such as an electromagnet, bolt, etc.), reduces the number of parts, and lowers the mechanical complexity and failure points. Moreover, only by controlling the driving module (such as the forward and reverse rotation of the motor) can the opening and closing of the bin door and self-locking be achieved, without the need to manually operate the mechanical bolt, improving the user experience. In addition, the self-locking state does not require continuous power consumption (compared with electromagnetic locks), meeting the energy-saving requirements and extending the equipment's battery life (suitable for battery-powered scenarios).

[0024] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following specifically gives preferred embodiments and, in conjunction with the accompanying drawings, makes the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0026] Figure 1 FIG. shows a schematic structural view of a bin door assembly provided by an embodiment of the present invention from one perspective;

[0027] Figure 2 FIG. shows a schematic structural view of a bin door assembly provided by an embodiment of the present invention from another perspective;

[0028] Figure 3Shows a schematic structural view of a perspective of a bin door provided by an embodiment of the present invention;

[0029] Figure 4 Shows a schematic structural view of a perspective of a feeder provided by an embodiment of the present invention.

[0030] Main element symbol description:

[0031] 10 - Bin door assembly; 20 - Feeder;

[0032] 100 - Bin door; 110 - Door hinge; 120 - Heat insulation layer; 130 - Sealing cushion layer;

[0033] 200 - Position detection module;

[0034] 300 - Driving module;

[0035] 400 - Transmission unit; 410 - Driven transmission member; 420 - Driving transmission member;

[0036] 500 - First transmission mechanism; 510 - First driven gear; 520 - First driving gear;

[0037] 600 - Second transmission mechanism; 610 - Second driven gear; 620 - Second driving gear. Detailed implementation manners

[0038] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described by referring to the drawings below are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0039] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0040] In the present invention, unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the specification of the present template are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0043] In the related art, the self-locking reliability of the rotary heat preservation bin door of a pet feeder directly affects the safety and operation efficiency of the device. The traditional bin door locking mechanism mainly uses independent locking devices such as electromagnetic locks and mechanical bolts, and has the following defects: it relies on additional power to maintain the locked state (for example, the electromagnetic lock fails when the power is cut off). And the mechanical bolt requires manual operation, which is inconvenient. Moreover, the locking mechanism is separated from the drive system, with a complex structure and a high failure rate.

[0044] Such as Figure 1 and Figure 2As shown in the figure, to solve the above technical problems, an embodiment of the present application provides a door assembly 10. The door assembly 10 includes a door 100 and a self-locking module. The door 100 has a door shaft 110. The self-locking module includes at least one stage of transmission unit 400. Each stage of transmission unit 400 includes a driving transmission member 420 and a driven transmission member 410. The driving transmission member 420 has a spiral tooth portion, and the driven transmission member 410 has a driven tooth portion. The spiral tooth and the driven tooth portion are engaged. When the transmission unit 400 is a single stage, the driven transmission member 410 is in transmission connection with the door shaft 110 of the door. When the transmission unit 400 is at least two stages, in adjacent transmission units 400, the driving transmission member 420 of the upper-stage transmission unit 400 is in transmission connection with the driven transmission member 410 of the lower-stage transmission unit 400, and the driven transmission member 410 of the last-stage transmission unit 400 is in transmission connection with the door shaft 110 of the door 100. Among them, the lead angle of the spiral tooth portion is less than the equivalent friction angle, forming a one-way self-locking transmission pair.

[0045] In these embodiments, the present application proposes a multi-stage self-locking module based on a spiral transmission pair for the door assembly 10. It has the following technical features and advantages:

[0046] Among them, in at least one stage of transmission unit 400 that constitutes the self-locking module, the driving transmission member 420 of each stage of transmission unit 400 is provided with a spiral tooth portion, and the driven transmission member 410 is provided with a driven tooth portion. The spiral tooth portion is engaged with the driven tooth portion to form a transmission relationship. The transmission units 400 at all levels are connected in series in sequence, and finally the driven transmission member 410 of the last stage is connected to the door shaft 110 of the door 100. That is to say, the driving module 300 inputs rotational power from the driving transmission member 420 of the first-stage transmission unit 400 to be able to drive the door 100 to rotate around the door shaft 110 to open or close the feeder 20.

[0047] It should be noted that the lead angle of the spiral tooth portion is less than the equivalent friction angle, which is the key condition for realizing self-locking, ensuring that the transmission unit 400 will not move in the reverse direction without external driving force. Even if the power is cut off or the drive fails, the door 100 will not open due to gravity or external interference. It realizes the locking state without additional power, significantly improving safety.

[0048] Obviously, integrating the driving module 300 and the locking function into the transmission unit 400 eliminates the traditional electromagnetic lock or bolt device. The structure is simplified, the failure rate is reduced, and the operation efficiency is improved.

[0049] Furthermore, the number of stages of the transmission unit 400 can be set according to actual needs, indicating that multiple stages of speed reduction / torque increase can be set according to actual requirements to adapt to the hatch doors 100 of different sizes or loads. Exemplarily, in this embodiment, the transmission unit is set to 2 stages. Of course, in other embodiments, it can also be 1 stage, 3, 4, 5 or 6 stages, etc. Moreover, multi-stage transmission helps to adjust the torque transmission efficiency and enhance the self-locking effect.

[0050] For the sake of easy understanding, in other words, the hatch door assembly 10 realizes power transmission and self-locking through the N-stage transmission unit 400. Each stage of the transmission unit 400 is composed of a driving transmission member 420 (helical tooth part) and a driven transmission member 410 (driven tooth part) meshing with each other, wherein the lead angle of the helical tooth part is designed to be less than the equivalent friction angle, forming a one-way self-locking transmission pair. This enables external forces to not be able to drive the transmission chain in the reverse direction (that is, the driven end cannot drive the driving end), thereby realizing the self-locking of the hatch door 100. Adjacent transmission units 400 are connected by the driving member and the driven member of the next stage, and the driven member of the last stage is linked with the door shaft 110 of the hatch door 100. Power is input from the first stage, and after multi-stage speed reduction and torque increase, it drives the door shaft 110 to rotate. At the same time, each stage maintains the self-locking characteristic to ensure the locking reliability. The driving module 300 (such as a motor) opens or closes the hatch door 100 by rotating the transmission unit 400 in the forward direction; when the driving stops, the transmission unit 400 automatically maintains its position due to the self-locking characteristic, without the need for an additional locking device (such as an electromagnetic lock or a bolt).

[0051] Therefore, by utilizing the self-locking characteristic of the helical tooth (lead angle < friction angle), it is possible to reliably lock the hatch door 100 without relying on external power or manual intervention during power failure or shutdown, avoiding the risk of the traditional electromagnetic lock failing during power failure. At the same time, integrating the driving and locking functions into the transmission chain eliminates the need for an independent locking mechanism (such as an electromagnet, a bolt, etc.), reduces the number of parts, and lowers the mechanical complexity and failure points. Furthermore, only by controlling the driving module 300 (such as the forward and reverse rotation of the motor) can the opening and closing of the hatch door 100 and self-locking be achieved, without the need to manually operate the mechanical bolt, improving the user experience. In addition, the self-locking state does not require continuous power consumption (compared with an electromagnetic lock), meeting the energy-saving requirements and extending the equipment's battery life (suitable for battery-powered scenarios).

[0052] As Figure 1 and Figure 2 shown, in some embodiments, the driving transmission member 420 is a worm, and the driven transmission member 410 is a worm wheel, and the worm and the worm wheel mesh with each other.

[0053] In these embodiments, the driving transmission member 420 uses a worm, while the driven transmission member 410 uses a worm wheel, and the two form a transmission relationship through the meshing method. The unique advantages of the worm and worm wheel transmission are utilized, specifically as follows:

[0054] The transmission between the worm and the worm wheel can achieve a relatively high reduction ratio, which means that a large torque change can be achieved in a relatively small space, making it very suitable for the opening and closing system of the storage door 100 that requires precise control.

[0055] When the lead angle of the worm is less than the friction angle, this transmission pair has a self-locking function. That is, only the worm can drive the worm wheel to rotate, and it cannot be driven in the reverse direction. This provides additional safety for the storage door assembly 10, preventing the storage door 100 from opening by itself due to accidental external forces.

[0056] Since the contact between the worm and the worm wheel is a continuous sliding contact, compared with other forms such as gear transmission, it can provide a smoother and quieter operation experience, which is particularly important for products such as the pet feeder 20 that need to consider the user experience.

[0057] Furthermore, the worm and worm wheel mechanism can be designed to be relatively compact, saving space, which helps to reduce the size of the entire feeder 20 and makes it easier to install and use.

[0058] As Figure 1 and Figure 2 shown, in some embodiments, the storage door assembly 10 further includes a drive module 300, and the drive module 300 is connected to the driving transmission member of the first-stage transmission unit, and the drive module 300 is used to drive the driving transmission member of the first-stage transmission unit to rotate.

[0059] In these embodiments, taking the driving transmission member being set as a worm as an example, the storage door assembly 10 is provided with an additional drive module 300, and this drive module 300 is directly connected to the worm and is used to drive the worm to rotate. Combining the drive source with the transmission system closely forms an efficient and reliable opening and closing mechanism for the storage door 100.

[0060] The drive module 300 provides power. That is to say, the main responsibility of the drive module 300 is to provide the necessary rotational power for the entire transmission unit 400 so that the worm can rotate in a predetermined direction and speed.

[0061] Of course, through an integrated control system (including a motor controller, a position sensor, etc.), precise control of the opening and closing process of the storage door 100 can be achieved.

[0062] Exemplarily, the drive module 300 is selected as a stepper motor or a servo motor, which can provide precise position control, which is crucial for ensuring that the storage door 100 opens and closes accurately. Of course, in other embodiments, the drive module 300 can also be selected as an electric push rod, a pneumatic cylinder or a servo, etc.

[0063] Exemplarily, in order to adapt to different load requirements, the drive module 300 includes a reducer to adjust the output torque and speed so that the worm can rotate at an appropriate speed and force.

[0064] In addition, a coupling or other connecting device can be used to safely and effectively connect the output shaft of the motor to the worm, ensuring the stability and reliability of power transmission.

[0065] Obviously, integrating the drive module 300 with the self-locking module (composed of a worm and a worm gear) simplifies the overall structure, reduces the number of components, and thus reduces the complexity and failure rate of the system.

[0066] Moreover, since the worm is directly driven by the drive module 300, it has high energy conversion efficiency and fast response speed, which helps to improve the working efficiency of the entire feeder 20.

[0067] As Figure 1 shown, in some embodiments, the door assembly 10 further includes a position detection module 200 and a control module. The position detection module 200 is used to detect the position of the door 100 and generate a position signal. The control module is electrically connected to the position detection module 200 and the drive module 300 respectively, and is configured to output an operation signal to the drive module 300 in response to the position signal.

[0068] In these embodiments, in order to further enhance the functionality and intelligence level of the door assembly 10, the door assembly 10 further includes a position detection module 200 and a control module. The addition of the position detection module 200 and the control module makes the operation of the door 100 more accurate and automated, and also improves the reliability of the system and the user experience.

[0069] The position detection module 200 is used to monitor the specific position of the door 100 in real time. Exemplarily, the position detection module 200 selects an optoelectronic switch, a Hall effect sensor, an encoder, etc.

[0070] Based on the detected position information of the door 100, the position detection module 200 generates corresponding position signals, which are sent to the control module for processing.

[0071] The control module is electrically connected to the position detection module 200 and can receive the position signals from the position detection module 200 in real time.

[0072] According to the received position signals, the control module analyzes the current state of the door 100 (such as whether it is fully open, closed or in an intermediate position).

[0073] Based on the above analysis results, the control module sends corresponding operation signals to the drive module 300 to control the working state of the drive module 300 (start, stop, adjust speed / direction, etc.), thereby accurately controlling the opening and closing actions of the door 100.

[0074] Exemplarily, the control module can be an MCU chip, a PLC programmable controller, etc.

[0075] Therefore, through the feedback information provided by the position detection module 200, the control module can achieve precise control of the opening and closing process of the bin door 100, ensuring that each operation is accurate. In particular, when it is necessary to keep the food in the feeder 20 warm, ensuring the closed state of the bin door 100 is particularly important.

[0076] Such as Figure 1 and Figure 2 As shown, in some embodiments, the number of stages of the transmission unit 400 is N, satisfying: N≥2.

[0077] In these embodiments, the self-locking module is composed of at least two stages of the transmission unit 400. This multi-stage transmission structure has significant advantages in improving the performance of the bin door assembly 10, especially in enhancing the self-locking reliability, improving the transmission efficiency, and adapting to complex working conditions.

[0078] Each stage of the transmission unit 400 (such as a worm and a worm wheel) has certain self-locking characteristics. When multi-stage series transmission is adopted, the self-locking effects of each stage can be superimposed, thus significantly enhancing the mechanical self-locking strength of the entire system. Even if the self-locking performance of a certain stage decreases due to manufacturing errors or wear, other stages can still provide sufficient locking force to ensure that the bin door 100 will not open accidentally.

[0079] The multi-stage transmission system can gradually reduce the speed, converting the high-speed rotation with a small torque output by the drive module 300 into a low-speed output with a large torque. This is particularly important for the opening and closing mechanism of the bin door 100 that requires a large starting torque, such as when the thermal insulation bin door 100 is heavy or has high sealing requirements.

[0080] After multi-stage deceleration, the output speed of the last stage is more stable, which helps to reduce the impact and vibration when the bin door 100 starts and stops. Combining with the position detection module 200 and the control module, fine-tuning control of the opening and closing angle of the bin door 100 can be realized, improving the operation accuracy.

[0081] In the multi-stage transmission structure, if a certain component has a minor fault, the remaining stages can still maintain the basic functions, avoiding the complete failure of the system.

[0082] Such as Figure 1 and Figure 2 As shown, in some embodiments, when the transmission unit 400 has at least two stages, in adjacent transmission units 400, the driven transmission member 410 of the upper-stage transmission unit 400 is drivingly connected to the driving transmission member 420 of the lower-stage transmission unit 400 through a first transmission mechanism 500, and the transmission ratio of the first transmission mechanism 500 is i1, and satisfies: i1<1.

[0083] In these embodiments, an optimization scheme for the linkage structure between multi-stage transmission units 400 is proposed: that is, between two adjacent transmission units 400, the driven transmission member 410 of the upper stage is connected to the driving transmission member 420 of the lower stage through a first transmission mechanism 500, and the first transmission mechanism 500 has a transmission ratio less than 1 (i1 < 1).

[0084] i1 < 1: It means that the first transmission mechanism 500 is a reduction mechanism (output speed > input speed), that is, after reducing the speed and increasing the torque at the input end, it is then transmitted to the driving transmission member 420 of the lower stage.

[0085] Each stage of the worm and worm gear structure itself already has a certain deceleration ability; introducing an intermediate transmission mechanism with i1 < 1 is equivalent to adding an additional deceleration link between each stage; after superimposing multi-stage deceleration, a larger output torque can be obtained at the output shaft of the last stage, which is suitable for driving a heavier or highly sealed hatch door 100.

[0086] Exemplarily, if the reduction ratio of each stage of the worm and worm gear is 30:1, the two-stage series connection is 900:1; adding a first transmission mechanism 500 with i1 = 0.2 (5:1), the total reduction ratio can reach 4500:1, greatly improving the locking torque.

[0087] The self-locking performance not only depends on the lead angle of a single worm and worm gear pair, but also is related to the overall transmission efficiency of the system; introducing a reduction mechanism (i1 < 1) can reduce the reverse driving torque transmission efficiency; making it more difficult for the entire transmission unit 400 to be reversely driven by external forces, thereby enhancing the overall mechanical self-locking effect.

[0088] When the driving module 300 drives the driving transmission member 420 of the frontmost stage, after multiple deceleration links, the change in the output angle of the last stage will be more refined; combined with the position detection module 200 and the control module, high-precision angle control can be achieved, which is suitable for application scenarios that require precise positioning of the opening and closing angles of the hatch door 100.

[0089] Exemplarily, the first transmission mechanism 500 can be a gear set, a synchronous pulley, a sprocket or other forms of reduction devices.

[0090] Such as Figure 1 and Figure 2 As shown, in some embodiments, the driven transmission member 410 of the last stage of the transmission unit 400 is in transmission connection with the door shaft 110 of the hatch door 100 through a second transmission mechanism 600, and the transmission ratio of the second transmission mechanism 600 is i2, and it satisfies: i2 < 1.

[0091] In these embodiments, the driven transmission member 410 of the final-stage transmission unit 400: is usually the last-stage worm gear (or other form of driven gear). The second transmission mechanism 600: is an intermediate transmission device connecting the final-stage driven transmission member 410 and the door shaft 110 of the bin door 100.

[0092] i2 < 1: indicates that the second transmission mechanism 600 is a speed reduction mechanism, and its output speed is higher than the input speed, that is, it achieves the effect of increasing torque and reducing speed.

[0093] Even if the previous multi-stage transmission has provided a large reduction ratio, introducing the second transmission mechanism 600 with i2 < 1 can further increase the output torque transmitted to the door shaft 110; this is particularly important for driving a relatively heavy or highly sealed bin door 100, such as a bin door 100 with a thermal insulation layer, an airtight structure, or a design to prevent pets from prying.

[0094] Exemplarily, if the output torque of the final-stage driven transmission member 410 is 10 N·m and the transmission ratio of the second transmission mechanism 600 is 0.5, the torque finally acting on the door shaft 110 will be amplified to 20 N·m.

[0095] In a multi-stage reduction system, each stage has a certain reverse transmission resistance; as the last-stage reduction link, the second transmission mechanism 600 can effectively suppress the reverse transmission of external disturbances to the previous-stage transmission system; thus improving the anti-interference ability and mechanical self-locking stability of the entire system.

[0096] When the driving module 300 drives the foremost-stage driving member to rotate, after multi-stage reduction, the angular change of the door shaft 110 is very small; the presence of the second transmission mechanism 600 makes this fine adjustment control more precise; it is particularly suitable for intelligent feeders 20 or automatic storage devices that require precise positioning of the opening and closing angles.

[0097] As Figure 1 and Figure 2 shown, in some embodiments, among adjacent transmission units 400, the first transmission mechanism 500 includes a first driving gear 520 and a first driven gear 510. The first driving gear 520 and the first driven gear 510 are meshed, the first driving gear 520 is coaxially and fixedly connected to the driven transmission member 410 in the previous-stage transmission unit 400, and the first driven gear 510 is coaxially and fixedly connected to the driving transmission member 420 in the next-stage transmission unit 400.

[0098] In these embodiments, in order to achieve power transmission between adjacent transmission units 400 and ensure that the entire system can operate efficiently and reliably, the first transmission mechanism 500 adopts gear transmission. Specifically, the first transmission mechanism 500 includes a first driving gear 520 and a first driven gear 510, and these two gears are meshed with each other to achieve power transmission between different transmission units 400.

[0099] The first driving gear 520: It is coaxially and fixedly connected to the driven transmission member 410 (such as a worm gear) of the previous-stage transmission unit 400. This means that when the driven transmission member 410 of the previous-stage transmission unit 400 rotates, it will directly drive the first driving gear 520.

[0100] The second driven gear 610: It is coaxially and fixedly connected to the driving transmission member 420 (such as a worm) of the next-stage transmission unit 400. In this way, through the meshing between the first driving gear 520 and the first driven gear 510, power can be transmitted from the previous-stage transmission unit 400 to the next-stage transmission unit 400.

[0101] Since the transmission ratio of the first transmission mechanism 500 is mentioned, this indicates that this is a speed reduction device, that is, the output speed is higher than the input speed, but the output torque increases. By selecting the appropriate tooth number ratio of the first driving gear 520 and the second driven gear 610, the transmission ratio of this stage can be precisely controlled, so as to meet the requirements of torque and speed for specific applications.

[0102] The multi-stage gear transmission plus the worm gear combination increases the overall self-locking ability of the system, enabling the hatch door 100 to remain in a stable closed state even without an additional locking mechanism. Using gear transmission can achieve efficient torque conversion in a limited space, which helps to reduce the size of the entire device.

[0103] Exemplarily, in this structure, the first-stage worm gear, as the driven transmission member 410 of the previous stage, is coaxially and fixedly connected to the first driving gear 520; the first driving gear 520 meshes with the first driven gear 510, and the first driven gear 510 is then coaxially and fixedly connected to the driving transmission member 420 (such as the second-stage worm) of the next stage; this configuration allows power to be transmitted smoothly and efficiently from one transmission unit 400 to the next, which can not only reduce energy loss but also make the overall structure more compact.

[0104] Exemplarily, the driven transmission member 410 of the previous stage is integrally provided with the first driving gear 520 coaxially and fixedly connected. The first driven gear 510 is integrally provided with the driving transmission member 420 of the next stage.

[0105] As Figure 1 and Figure 2 shown, in some embodiments, the second transmission mechanism 600 includes a second driving gear 620 and a second driven gear 610. The second driving gear 620 meshes with the second driven gear 610. The second driving gear 620 is coaxially and fixedly connected to the driven transmission member 410 in the final-stage transmission unit 400. The second driven gear 610 is coaxially and fixedly connected to the door shaft 110 of the hatch door 100.

[0106] In these embodiments, the second transmission mechanism 600 is used to connect the driven transmission member 410 of the final-stage transmission unit 400 and the door shaft 110 of the storage door 100, and this mechanism includes a gear set:

[0107] The second driving gear 620: is coaxially and fixedly connected to the driven transmission member 410 (such as a worm gear) of the final-stage transmission unit 400. The second driven gear 610: is coaxially and fixedly connected to the door shaft 110 of the storage door 100. The second driving gear 620 and the second driven gear 610 mesh with each other, so as to realize the transmission of power from the final-stage transmission unit 400 to the door shaft 110 of the storage door 100. By using gear transmission, the closing accuracy of the storage door 100 can be accurately controlled.

[0108] As Figure 3 shown, in some embodiments, the storage door 100 has a sandwich layer, and a heat insulation and preservation layer 120 is arranged in the sandwich layer.

[0109] In these embodiments, in order to further improve the heat preservation performance of the pet feeder 20, the storage door 100 has been specially optimized. The storage door 100 has an internal space, that is, a sandwich layer. This not only increases the structural strength of the storage door 100, but also can be used to accommodate additional functional layers.

[0110] A heat insulation and preservation material is arranged in the sandwich layer. The main function of this layer of material is to reduce the influence of external temperature changes on the food in the storage, and keep the freshness and taste of the food. Common heat insulation and preservation materials include polyurethane foam (PU), polystyrene (EPS), etc. These materials have good heat insulation performance and are light in weight. Whether in cold winter or hot summer, it can ensure that the food is in a suitable storage environment.

[0111] As Figure 1 shown, in some embodiments, a sealing cushion layer 130 is arranged on the inner side of the storage door 100, and the sealing cushion layer 130 is an elastic sealing cushion layer 130 or a flexible sealing cushion layer 130.

[0112] In these embodiments, an elastic sealing cushion layer 130 or a flexible sealing cushion layer 130 is arranged on the inner side of the storage door 100. Such sealing materials are usually made of materials with good elasticity and weather resistance, such as silica gel and rubber.

[0113] The main function of the sealing cushion layer 130 is to ensure that the storage door 100 can fit tightly against the storage body when it is closed, prevent air, moisture or other impurities from entering, thereby protecting the internal food from contamination and maintaining the stability of the internal environment. Moreover, enhancing the airtightness when the storage door 100 is closed helps to maintain a constant temperature state inside the storage, which is particularly important when the heat preservation function is configured.

[0114] Furthermore, the soft sealing material can also play a buffering role, reducing the noise generated when the warehouse door 100 is closed and providing a quieter operation experience.

[0115] As Figure 4 shown, in some embodiments, the present application further provides a feeder 20, and the feeder 20 includes a warehouse door assembly 10 as described in any one of the above embodiments.

[0116] Since the above warehouse door assembly 10 has the above technical effects, the feeder 20 including the warehouse door assembly 10 should have the same technical effects, which will not be elaborated here.

[0117] In all the examples shown and described here, any specific value should be construed as merely exemplary, not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0118] It should be noted that like reference numerals and letters denote like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0119] The above-described embodiments merely represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A door component of a bin, characterized in that, The bin door assembly includes: A bin door having a door shaft; A self-locking module including at least one stage of transmission units; each stage of the transmission unit includes a driving transmission member and a driven transmission member, the driving transmission member has a helical tooth portion, the driven transmission member has a driven tooth portion, and the helical tooth meshes with the driven tooth portion; When the transmission unit is a single stage, the driven transmission member is in transmission connection with the door shaft of the bin door; When the transmission unit is at least two stages, in adjacent transmission units, the driving transmission member of the upper-stage transmission unit is in transmission connection with the driven transmission member of the lower-stage transmission unit, and the driven transmission member of the last-stage transmission unit is in transmission connection with the door shaft of the bin door; wherein, the lead angle of the helical tooth portion is less than the equivalent friction angle, forming a one-way self-locking transmission pair.

2. The bin door assembly according to claim 1, wherein The driving transmission member is a worm, the driven transmission member is a worm gear, and the worm meshes with the worm gear.

3. The door assembly according to claim 1 or 2, characterized in that, The bin door assembly further includes a driving module connected to the driving transmission member of the first-stage transmission unit, and the driving module is configured to drive the driving transmission member to rotate.

4. The door assembly according to claim 3, wherein, The bin door assembly further includes: A position detection module configured to detect the position of the bin door and generate a position signal; A control module electrically connected to the position detection module and the driving module respectively, and the control module is configured to output an operation signal to the driving module in response to the position signal.

5. The bin door assembly according to claim 4, characterized in that, When the transmission unit is at least two stages, in adjacent transmission units, the driven transmission member of the upper-stage transmission unit is in transmission connection with the driving transmission member of the lower-stage transmission unit through a first transmission mechanism, the transmission ratio of the first transmission mechanism is i1, and satisfies: i1 < 1.

6. The bin door assembly according to claim 5, wherein The driven transmission member of the last-stage transmission unit is in transmission connection with the bin door through a second transmission mechanism, the transmission ratio of the second transmission mechanism is i2, and satisfies: i2 < 1.

7. The door assembly according to claim 6, wherein, In adjacent transmission units, the first transmission mechanism includes a first driving gear and a first driven gear, the first driving gear meshes with the first driven gear, the first driving gear is coaxially and fixedly connected to the driven transmission member in the upper-stage transmission unit, and the first driven gear is coaxially and fixedly connected to the driving transmission member in the lower-stage transmission unit; And / or, the second transmission mechanism includes a second driving gear and a second driven gear, the second driving gear meshes with the second driven gear, the second driving gear is coaxially and fixedly connected to the driven transmission member in the last-stage transmission unit, and the second driven gear is coaxially and fixedly connected to the door shaft of the bin door.

8. The door assembly according to claim 1, characterized in that, The bin door has a sandwich layer, and a heat insulation and thermal insulation layer is provided in the sandwich layer.

9. The bin door assembly according to claim 1, characterized in that, A sealing cushion layer is provided on the inner side of the bin door, and the sealing cushion layer is an elastic sealing cushion layer or a flexible sealing cushion layer.

10. A feeder, characterized in that, The feeder includes the bin door assembly according to any one of claims 1 to 9.

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