Door opening device and terminal product using same

Abstract

The utility model relates to a door opening device and a terminal product using the same. The door opening device comprises a shell; the door pushing assembly comprises a push rod which is arranged in the shell and is suitable for pushing the door body and a door pushing transmission chain which is used for driving the push rod to do linear motion; the driving assembly is arranged in the shell and used for driving the door pushing transmission chain to operate; the control assembly comprises a control panel which is arranged in the shell and is connected with the driving assembly, and a sound sensing module which is connected with the control panel; the sound sensing module is suitable for obtaining a door opening instruction and sending the instruction to the control panel so as to control the driving assembly to drive the door pushing transmission chain to operate to enable the push rod to execute door opening operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to switch door technical field especially, relate to a door opening device and use its terminal product. BACKGROUND

[0002] The use of intelligent appliances and furniture makes the automatic door opening device widely used. For the automatic door opening device, the triggering of the door opening instruction can be setting a touch screen on the door body, which is realized by a touch sensor cooperating with a control circuit board, such as the touch sensor assembly and the door with the touch sensor assembly disclosed in publication No. CN10537507A. It can also be setting a knocking module on the door body to sense the vibration information on the door body to cooperate with the control board, realizing the control of the automatic door opening operation of the door body, such as the knocking automatic door opening refrigerator disclosed in publication No. CN113639498A.

[0003] Based on the above situation, whether the opening of the door body is realized by touch or the opening of the door body is realized by knocking vibration, in order to improve the sensitivity and triggering efficiency of the door opening signal, operation needs to be performed on a specific area of the door body. In combination with different height crowds, such as the door opening device applied in furniture, the opening triggering operation area of the door body corresponding to different height crowds is also different, so that the triggering process of the door opening device limiting the operation area is not good in use convenience and smoothness.

[0004] In summary, in view of the problems existing in the automatic door opening device applied in the existing electric appliances and furniture, the structure thereof needs to be further optimized from the perspective of optimizing the door opening triggering process. UTILITY MODEL CONTENTS

[0005] The first object of the utility model is to provide a door opening device to solve the technical problem of improving the sensitivity and efficiency of the triggering process of the door opening device.

[0006] The second object of the utility model is to provide a terminal product to solve the technical problem of optimizing the use performance of the door opening device.

[0007] The door opening device of the utility model is realized as follows:

[0008] A door opening device, comprising:

[0009] a shell;

[0010] a door pushing assembly comprising a push rod adapted to push the door body and a door pushing transmission chain for driving the push rod to move linearly, which are arranged in the shell;

[0011] a driving assembly arranged in the shell and used for driving the door pushing transmission chain to operate; and

[0012] The control assembly comprises a control panel in the shell connected with the driving assembly, and a sound sensing module connected with the control panel; wherein

[0013] The sound sensing module is adapted to obtain the door opening instruction and send it to the control panel to control the driving assembly to drive the door pushing transmission chain to operate so that the push rod performs the door opening operation.

[0014] In the optional implementation of the utility model, the door opening instruction is sound information triggered by knocking the door body.

[0015] In the optional implementation of the utility model, the door opening device further comprises a suction cup rubber sleeve for assembling the sound sensing module.

[0016] In the optional implementation of the utility model, the suction cup rubber sleeve comprises a sleeve shell for accommodating the sound sensing module and a suction nozzle connected with one end of the sleeve shell for being connected with the door body by suction; wherein

[0017] The sleeve shell has a receiving cavity for assembling the sound sensing module, and the receiving cavity is tightly matched with the outer side wall of the sound sensing module; and

[0018] The suction nozzle partially extends outside the shell to be adapted to be connected with the door body by suction to produce deformation.

[0019] In the optional implementation of the utility model, the shell comprises a shell body and a shell cover connected in matching; and

[0020] The shell body and the shell cover cooperate to form an assembly cavity for fixing the sleeve shell.

[0021] In the optional implementation of the utility model, the outer side wall of the sleeve shell is further provided with an annular flange; and

[0022] The assembly cavity is provided with a limiting clamping groove adapted to clamp the annular flange therein.

[0023] In the optional implementation of the utility model, the door opening device further comprises a magnet arranged in the shell and adapted to be attracted to the pre-set magnetic attraction strip on the door body.

[0024] In the optional implementation of the utility model, the control panel is provided with a sound recognition module;

[0025] The sound recognition module comprises at least one recognition model;

[0026] The sound recognition module is adapted to recognize and process the sound information obtained by the sound sensing module according to the pre-set recognition model to determine the recognition result of the corresponding sound information.

[0027] In the optional implementation of the utility model, the door pushing transmission chain comprises at least one transmission gear; and

[0028] A strip-shaped toothed portion is formed on the push rod and is adapted to engage with the transmission gear at the transmission terminal end included in the door pushing transmission chain.

[0029] In the optional implementation of the utility model, the push rod is adapted to perform the door opening operation through linear motion; and

[0030] The housing is further provided with a first sensing element for sensing the initial position corresponding to the linear motion track of the push rod and a second sensing element for sensing the terminal position corresponding to the linear motion track of the push rod.

[0031] In the optional implementation of the utility model, the driving assembly comprises a worm motor for engaging with the transmission gear at the transmission start end included in the door pushing transmission chain.

[0032] The terminal product of the utility model is realized as follows:

[0033] A terminal product comprises a cabinet body and a cabinet door used in cooperation, and a door opening device arranged in the cabinet body.

[0034] By adopting the above technical scheme, the door opening device and the terminal product using the same have the following beneficial effects: the sound sensing module of the door opening device and the terminal product using the same is adapted to acquire the door opening instruction and send the door opening instruction to the control panel, so that the driving assembly is driven to drive the door pushing transmission chain to operate and make the push rod perform the door opening operation. In this structure, the door opening instruction does not need to be limited to the area of the door body. As long as the door opening instruction can be collected by the sound sensing module, the door body can be opened. Therefore, the flexibility and convenience of use are enhanced. In this case, the door body does not need to be improved, and a touch screen and a vibration signal collector do not need to be arranged on the door body. Therefore, the layout of the overall door opening device on the terminal product can be simplified, and the convenience of overall assembly and maintenance is improved. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is an exploded structural schematic view of the door opening device of the utility model;

[0036] Figure 2 is an internal structural schematic view of the door opening device of the utility model;

[0037] Figure 3 is an exploded structural schematic view of the sound sensing module and the suction cup rubber sleeve of the door opening device of the utility model;

[0038] Figure 4 is a structural schematic view of the suction cup rubber sleeve and the door body in the state of suction of the door opening device of the utility model.

[0039] Figure 5 is the internal structure schematic view of the suction cup rubber sleeve of the door opening device in the adsorbed state with the door body;

[0040] Figure 6 is the cooperation structure schematic view of the push rod and the second sensing element of the door opening device;

[0041] Figure 7 is the cooperation structure schematic view of the pressing block and the second sensing element of the door opening device;

[0042] Figure 8 is the cooperation structure schematic view of the pressing block and the first sensing element of the door opening device;

[0043] Figure 9 is the exploded structure schematic view of the push rod and the shell body of the door opening device;

[0044] Figure 10 is Figure 9 the B part enlarged view;

[0045] Figure 11 is the structure schematic view of the shell body of the door opening device.

[0046] In the figure: shell body 11, shell cover 12, strip-shaped limiting block 13, guide rib 15, assembly cavity 16, limiting clamping groove 17, push rod 2, strip-shaped tooth-shaped part 21, pressing block 22, strip-shaped limiting groove 23, guide groove 25, transmission gear 3, worm motor 4, first sensing element 51, second sensing element 52, trigger end 53, sound sensing module 61, control panel 62, sound recognition module 63, suction cup rubber sleeve 7, outer sleeve shell 71, suction nozzle 72, annular flange 73, accommodating cavity 75, magnet 81, magnetic attraction strip 82, door body 100. DETAILED DESCRIPTION

[0047] In order to make the content of the utility model more easily be clearly understood, the following according to specific embodiment and combining with the drawings, the utility model is further detailed.

[0048] Example 1:

[0049] Please refer to Figures 1 to 11 As shown in the figure, the embodiment provides a door opening device, which comprises: a shell and a door pushing assembly, a driving assembly and a control assembly arranged in the shell.

[0050] Specifically, the shell comprises a shell body 11 and a shell cover 12 connected in a matching manner; the door pushing assembly comprises a push rod 2 suitable for pushing the door body 100 and a door pushing transmission chain for driving the push rod 2 to move linearly; the driving assembly is used to drive the door pushing transmission chain to run.

[0051] To this end, in combination with the drawings, an optional embodiment is exemplified, the push rod 2 is adapted to perform the door opening operation by linear motion, based on which, the push rod 2 is formed with a strip-shaped toothed portion 21 arranged along the linear motion direction thereof, in order to match the movement requirement of the push rod 2, the door pushing transmission chain comprises at least one transmission gear 3, in the embodiment, three transmission gears 3 are provided as an example, one of the transmission gears 3 is located at the transmission terminal for meshing with the strip-shaped toothed portion 21 of the push rod 2, another transmission gear 3 is located at the transmission starting end for being connected with the driving assembly, the driving assembly here can be selected to be, for example but not limited to, a worm motor 4, and the other transmission gear 3 is not directly connected with the driving assembly and the strip-shaped toothed portion 21 of the push rod 2.

[0052] On the basis of the above structure, in an optional embodiment, in order to accurately grasp the movement trajectory of the push rod 2, a first sensing element 51 for sensing the initial position corresponding to the linear motion trajectory of the push rod 2 (the initial position here refers to the position of the push rod 2 when the door body 100 is in the closed state relative to the cabinet door) and a second sensing element 52 for sensing the terminal position corresponding to the linear motion trajectory of the push rod 2 (the terminal position here refers to the position of the push rod 2 when the door body 100 is pushed open relative to the cabinet door) are further provided in the housing. The first sensing element 51 and the second sensing element 52 here can both be micro switches, to this end, a pressing block 22 for triggering the first sensing element 51 and the second sensing element 52 is provided on the push rod 2. It should be noted that the first sensing element 51 and the second sensing element 52 are connected with the control assembly, so that the control assembly can timely adjust the state of the driving assembly after receiving the signals of the first sensing element 51 and the second sensing element 52.

[0053] In more detail in combination with the drawings, the first sensing element 51 and the second sensing element 52 are arranged on the same side of the push rod 2 and are arranged in a spaced manner along a direction parallel to the linear motion trajectory of the push rod 2, and the pressing block 22 is protrudingly provided on the side end of the push rod 2 facing the first sensing element 51 and the second sensing element 52, and the pressing block 22 moves within the interval between the first sensing element 51 and the second sensing element 52 when the push rod 2 moves linearly. To this end, the triggering ends 53 of the first sensing element 51 and the second sensing element 52 are both directed towards the above interval, so that the movement of the pressing block 22 within the above interval can achieve the triggering of the first sensing element 51 and the second sensing element 52, and for the pressing block 22, the end faces for triggering the first sensing element 51 and the second sensing element 52 are two different end faces, based on which, when the two different end faces of the pressing block 22 trigger the first sensing element 51 and the second sensing element 52, the triggering can be achieved in a direction perpendicular to the triggering end 53, thereby ensuring the success rate of triggering.

[0054] On the basis of the above structure, it is necessary to further illustrate that, in an alternative implementation, for the linear motion process of the push rod 2, considering that the pressure block 22 needs to trigger the corresponding sensing element when it moves to the two extreme positions corresponding to the push-open and closed states of the door body 100, in order to prevent the pressure block 22 from generating excessive impact force on the corresponding sensing element and causing damage to the sensing element, the embodiment limits the two extreme positions in the linear motion process of the push rod 2. In an alternative case, as shown in the drawings, a limiting assembly is arranged between the shell body 11 and the push rod 2. The limiting assembly includes a strip-shaped limiting groove 23 arranged on the push rod 2 and a strip-shaped limiting block 13 arranged in the shell. The strip-shaped limiting block 13 is arranged on the shell body 11 near the opening through which the push rod 2 protrudes. The strip-shaped limiting block 13 and the strip-shaped limiting groove 23 both extend along the linear motion direction of the push rod 2, and the length of the strip-shaped limiting groove 23 is much greater than the length of the strip-shaped limiting block 13. The length of the strip-shaped limiting groove 23 is the maximum linear motion range of the push rod 2 during use. When the push rod 2 is in the push-open state to the corresponding limit position, one end of the strip-shaped limiting block 13 abuts against one groove end of the strip-shaped limiting groove 23, and when the push rod 2 is in the closed state to the corresponding limit position, the other end of the strip-shaped limiting block 13 abuts against the other groove end of the strip-shaped limiting groove 23. Under this design, the pressure block 22 can trigger the first sensing element 51 and the second sensing element 52 as the push rod 2 moves to different positions, but will not generate impact force on the first sensing element 51 and the second sensing element 52.

[0055] In addition, it is also necessary to illustrate that a guide structure for limiting the linear motion trajectory of the push rod 2 is arranged between the shell and the push rod 2. The guide structure can be, for example, but not limited to, a guide groove 25 arranged on the push rod 2 and a guide rib 15 arranged on the shell body 11 to match the guide groove 25.

[0056] Next, it is necessary to focus on the triggering process of the door opening operation of the door opening device of the embodiment:

[0057] The embodiment controls the running state of the driving assembly through the control assembly. Roughly, the control assembly includes a control panel 62 arranged in the shell and connected with the driving assembly, and a sound sensing module 61 connected with the control panel 62. The sound sensing module 61 is adapted to obtain an opening instruction and send it to the control panel 62 to control the driving assembly to drive the push door transmission chain to run so that the push rod 2 performs the door opening operation.

[0058] In an alternative embodiment, the door opening instruction here can be a fixed content password such as but not limited to "please open the door", and people make a sound corresponding to the above password content towards the door body 100, and the sound sensing module 61 collects the sound information to send to the control panel. In another alternative embodiment, the door opening instruction here can be to obtain the sound information triggered by knocking the door body 100. Next, the embodiment will be described in detail in the corresponding implementation case of this door opening instruction.

[0059] Based on the above, the control panel 62 is also provided with a sound recognition module 63; the sound recognition module 63 here includes at least one recognition model; the sound recognition module 63 is adapted to recognize the sound information obtained by the sound sensing module 61 according to the pre-set recognition model, and determine the recognition result of the corresponding sound information.

[0060] For example, according to one or more recognition models pre-stored in the control panel 62, the sound information is recognized and processed to determine the validity of the sound information and the recognition result of the sound information. If the recognition is passed, the control panel 62 issues a control instruction corresponding to the sound information based on the pre-set control logic to control the driving assembly to operate the door pushing transmission chain to drive the push rod 2 to perform the door opening operation. If the recognition is not passed, the control panel 62 will not issue a control instruction to control the driving assembly to operate. For example, the pre-set control logic here is that two knocks on the door body 100 are required to produce two knock sounds to pass the recognition, and one knock cannot pass the recognition. Of course, it can be understood here that in order to facilitate the sound sensing module 61 to obtain reliable sound, the decibels of the sound produced by the knock also need to meet certain conditions. Therefore, the number of times of the sound produced by the knock that can pass the recognition and the decibels of the corresponding sound are pre-set in the control logic, and the knock sound below the minimum decibel requirement and the number of times of the knock sound that do not meet the requirements cannot pass the recognition. The cooperation principle of the control panel 62, the sound recognition module 63, the sound sensing module 61 and the driving assembly here can be selected from the mature means in the prior art, such as but not limited to a method for controlling intelligent equipment by knocking sound disclosed in publication No. CN102999279A, and for example but not limited to a knock-based device control method, device and storage medium disclosed in publication No. CN116795318A.

[0061] On the basis of the above structure, it needs to be explained that the knocking of the door body 100 needs to be collected by the knocking sound generated by the sound induction module 61, so the sound induction module 61 is arranged on the shell closest to the side end of the door body 100. In this regard, the end of the shell towards the door body 100 is provided with a mounting portion for fixing the sound induction module 61. In this structure, when the door body 100 is in a closed state relative to the cabinet door, the distance between the sound induction module 61 and the door body 100 is the smallest, and the sound generated by the knocking of the door body 100 can be transmitted to the sound induction module 61 the fastest.

[0062] Based on the above, it also needs to be explained that the efficiency of sound propagation in different media is different. Specifically, the speed of sound propagation in solid medium is greater than that in liquid medium, and the speed of sound propagation in liquid medium is greater than that in gas medium. Therefore, the speed of sound propagation in solid medium is the fastest, and for the convenience of using the door opening device, this embodiment does not need to pre-set a fixed knocking area on the door body 100. As long as the knocking on the surface of the door body 100 can produce sound that meets the decibel requirement and the knocking number requirement, the control board 62 can control the driving assembly to drive the door pushing transmission chain to operate to make the push rod 2 execute the door opening operation.

[0063] On the basis of the above, since the knocking of different areas of the door body 100, the path of the knocking sound to the sound induction module 61 is different, therefore the reaction time of the door opening operation performed by the knocking sound is also different, that is, there is a certain delay between the execution of the door opening operation and the knocking of the door body 100 to generate sound. And since the sound induction module 61 is arranged in the shell, and the shell is installed on the cabinet door, therefore, theoretically, after the knocking sound completes the propagation on the door body 100, it also needs to be propagated through the air to be collected by the sound induction module 61. Therefore, for the above propagation path, in order to shorten the delay time of the door opening operation after the knocking of the door body 100 to generate knocking sound as much as possible, this embodiment is designed as follows:

[0064] The sound induction module 61 is assembled into a suction rubber sleeve 7. Specifically, the suction rubber sleeve 7 includes a sleeve shell 71 for accommodating the sound induction module 61 and a suction nozzle 72 connected to one end of the sleeve shell 71 for being connected to the door body 100 by suction; wherein the sleeve shell 71 has an accommodation cavity 75 for assembling the sound induction module 61, and the accommodation cavity 75 is tightly fitted with the outer side wall of the sound induction module 61; and the suction nozzle 72 partially protrudes outside the shell to be adapted to be suctioned to the door body 100 to produce deformation. In this regard, for the case of facilitating processing, the shape of the sound induction module 61 can be selected as a cylindrical shape, and the corresponding accommodation cavity 75 is a hollow cylindrical cavity, and the suction rubber sleeve 7 itself is made of a material with certain micro-deformation performance. The overall structure of the suction rubber sleeve 7 is simple, and the cost is low. Therefore, the tight fit between the accommodation cavity and the outer side wall of the sound induction module 61 can be achieved by interference fit between the sound induction module 61 and the accommodation cavity. The tight fit between the two is mainly to prevent air from entering the accommodation cavity from the gap between them.

[0065] For the shell, in order to meet the use requirements of the above-mentioned suction rubber sleeve 7, the shell body 11 and the shell cover 12 of the present embodiment cooperate to form an assembly cavity 16 for fixing the sleeve shell 71. In this regard, in order to take into account the convenience of assembling the suction rubber sleeve 7 and the assembly cavity 16 and to ensure that the suction rubber sleeve 7 can be reliably fixed in the assembly cavity 16, the outer side wall of the sleeve shell 71 in the present embodiment is also provided with an annular flange 73; and the assembly cavity 16 is provided with a limiting clamping groove 17 adapted to clamp the annular flange 73 therein. In a specific optional case, the annular flange 73 is arranged on the outer side wall of the end of the sleeve shell 71 away from the suction nozzle 72. In this way, the annular flange 73 is limited in the axial direction by the cooperation of the limiting clamping groove 17 and the annular flange 73 without affecting the normal use of the suction nozzle 72. As for the radial limitation of the sleeve shell 71, it is realized by the cooperation of the shell cover 12 and the shell body 11 to make the assembly cavity 16 produce a slight extrusion in the radial direction of the suction rubber sleeve 7.

[0066] In addition, in order to make the door body 100 and the cabinet body form a reliable cooperation state when the door body 100 is in a closed state relative to the cabinet body, the door opening device of the present embodiment further comprises a magnet 81 arranged in the shell and adapted to be attracted to a pre-set magnetic attraction strip 82 on the door body 100.

[0067] By the setting of the suction cup rubber sleeve 7, when the door body 100 is in a closed state relative to the cabinet door, the preset magnetic attraction strip on the door body 100 is magnetically attracted by the magnet 81 to drive the door body 100 to squeeze out most of the air inside the suction cup rubber sleeve 7, and the suction nozzle 72 of the suction cup rubber sleeve 7 is tightly attached to the door body 100 under the action of the external atmospheric pressure. Thus, a solid medium suitable for the sound propagation generated by knocking the door body 100 can be formed between the sound sensing module 61 built in the accommodation cavity of the suction cup rubber sleeve 7 and the door body 100, that is, the sound generated by knocking the door body 100 is propagated through the door body 100 and then propagated to the sound sensing module 61 by the suction cup rubber sleeve 7, and the sound collecting effect is good. At the same time, since most of the air inside the suction cup rubber sleeve 7 is squeezed out, the interference of the noise signal corresponding to the non-knocking sound generated outside the door body 100 can be eliminated.

[0068] In summary, for the door opening device of the present embodiment, the sound sensing module 61 is set to cooperate with the control panel 62, so that the sound sensing module 61 is suitable for acquiring the sound information triggered by knocking the door body 100 and sending it to the control panel 62 to control the driving assembly to drive the door pushing transmission chain to operate to make the push rod 2 perform the door opening operation. Under this structure, knocking the door body 100 no longer needs to be limited to a knocking area, as long as knocking sound can be generated on the door body 100, the sound can be transmitted in the door body 100 to the sound sensing module 61 in the door opening device, and the opening of the door body 100 can be realized, so the flexibility and convenience of use are enhanced. Furthermore, through the design of the suction cup rubber sleeve 7, the sound generated by knocking the door body 100 can be propagated in the solid medium as a whole, which speeds up the propagation speed and thus reduces the delay of the operation of the push rod 2 of the door body 100.

[0069] Embodiment 2:

[0070] On the basis of the door opening device of embodiment 1, the present embodiment provides a terminal product, which comprises a cabinet body and a cabinet door used in cooperation, and the door opening device as in embodiment 1 arranged in the cabinet body. It should be noted that the terminal product here can be a refrigerator or a wardrobe, or other electrical appliances or furniture that need to realize automatic door opening, so the terminal product in the present embodiment is not absolutely limited.

[0071] The above specific embodiments further illustrate the purpose, technical scheme and beneficial effects of the present application, and it should be understood that the above are only specific embodiments of the present application and are not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

[0072] In the description of the utility model, need understanding is, the term indicating the orientation or position relation is based on the orientation or position relation shown in the drawing, is only for the convenience of describing the utility model and simplifying the description, and is not indicating or implying that the indicated device or element must have a specific orientation, is constructed and operated with a specific orientation, therefore can not be understood as the limitation to the utility model.

[0073] In the utility model, unless another explicit provision and limitation, the term "installation", "connection", "connect", "fix" and so on term should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication inside two elements or the interaction relationship of two elements. For the ordinary skilled person in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

Claims

1. A door opening device characterized by comprising: The door opening device comprises: a housing; a door pushing assembly comprising a pushing rod adapted to push a door body and a door pushing transmission chain adapted to drive the pushing rod to perform linear motion; a driving assembly adapted to drive the door pushing transmission chain to operate; a control assembly comprising a control board adapted to be connected with the driving assembly and a sound sensing module adapted to be connected with the control board; wherein the sound sensing module is adapted to obtain a door opening instruction and send the door opening instruction to the control board so as to control the driving assembly to drive the door pushing transmission chain to operate and make the pushing rod perform a door opening operation. The door opening instruction is sound information triggered by knocking the door body. The door opening device further comprises a suction cup rubber sleeve adapted to assemble the sound sensing module.

2. The door opening device according to claim 1, characterized in that The suction cup rubber sleeve comprises a sleeve shell adapted to accommodate the sound sensing module and a suction nozzle adapted to be connected with the door body and connected with one end of the sleeve shell; wherein 3. The door opening device according to claim 2, characterized in that the sleeve shell has an accommodating cavity adapted to assemble the sound sensing module, and the accommodating cavity is tightly matched with an outer side wall of the sound sensing module; and 4. The door opening device according to claim 3, characterized in that the suction nozzle partially extends outside the housing and is adapted to be connected with the door body to generate deformation. The housing comprises a housing body and a housing cover connected with each other; and the housing body and the housing cover are matched to form an assembling cavity adapted to fix the sleeve shell.

5. The door opening device according to claim 4, characterized in that The outer side wall of the sleeve shell is further provided with an annular flange; and the assembling cavity is provided with a limiting slot adapted to clamp the annular flange.

6. The door opening device according to claim 5, characterized in that The door opening device further comprises a magnet adapted to be connected with the housing and adapted to be attracted to a pre-set magnetic strip on the door body. The control board is provided with a sound recognition module; 7. The door opening device according to any one of claims 1 to 6, characterized in that the sound recognition module comprises at least one recognition model; 8. The door opening device according to claim 1, characterized in that the sound recognition module is adapted to recognize and process sound information obtained by the sound sensing module according to the pre-set recognition model to determine a recognition result corresponding to the sound information. The door pushing transmission chain comprises at least one transmission gear; and the pushing rod is formed with a strip-shaped toothed portion adapted to be engaged with a transmission gear at a transmission terminal end of the door pushing transmission chain.

9. The door opening device according to claim 1, characterized in that The pushing rod is adapted to perform a door opening operation through linear motion; and the housing is further provided with a first sensing element adapted to sense an initial position corresponding to a linear motion track of the pushing rod and a second sensing element adapted to sense an end position corresponding to the linear motion track of the pushing rod.

10. The door opening device according to claim 9, characterized in that The driving assembly comprises a worm motor adapted to be engaged with a transmission gear at a transmission start end of the door pushing transmission chain. The door opening device comprises:

11. The door opening device according to claim 9 or 10, characterized in that a cabinet body and a cabinet door used in cooperation, and the door opening device as claimed in any one of claims 1 to 11 arranged in the cabinet body.

12. A terminal product, characterized in that ​ ​

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