Door opening device and terminal product using same

Abstract

The invention 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 arranged in the shell and suitable for pushing the door body and a door pushing transmission chain used for driving the push rod to move; 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 sound information triggered by knocking the door body and sending the sound information 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 present invention relates to the technical field of door opening and closing, and in particular to a door opening device and a terminal product using the same. Background Art

[0002] The use of smart appliances and furniture has made automatic door opening devices widely used. For automatic door opening devices, the triggering of the door opening command can be achieved by setting a touch screen on the door body and using a touch sensor to cooperate with a control circuit board, such as the touch sensor assembly and door with a touch sensor assembly disclosed in publication number CN10537507A. It is also possible to set a knocking module on the door body to sense vibration information on the door body to cooperate with the control board to achieve control of the automatic door opening operation of the door body, such as a knocking automatic door opening refrigerator disclosed in publication number CN113639498A.

[0003] Based on the above situation, whether the door is opened by touching or by knocking and vibrating, in order to improve the sensitivity and efficiency of the door opening signal trigger, it is necessary to operate in a specific area on the door. In combination with people of different heights, for example, the door opening device used in furniture has different door opening trigger operation areas corresponding to people of different heights. Therefore, the triggering process of the door opening device with a limited operation area is not convenient and smooth.

[0004] In summary, in view of the problems existing in the automatic door opening devices used in electrical appliances and furniture in the prior art, from the perspective of optimizing the door opening triggering process, its structure needs to be further optimized. Summary of the invention

[0005] The first object of the present invention 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 present invention is to provide a terminal product to solve the technical problem of optimizing the performance of the door opening device.

[0007] The door opening device of the present invention is achieved in this way: A door opening device, comprising: case; A door push assembly, comprising a push rod disposed in a housing and adapted to push a door body and a door push transmission chain for driving the push rod to move; A driving assembly, which is disposed in the housing and is used to drive the sliding door transmission chain to operate; and The control assembly includes a control panel connected to the driving assembly and a sound sensing module connected to the control panel; wherein The sound sensing module is suitable for acquiring the sound information triggered by knocking on the door body and sending it to the control panel to control the driving component to drive the door push transmission chain to operate so that the push rod performs the door opening operation.

[0008] In an optional implementation of the present invention, the door opening device also includes a suction cup rubber sleeve for assembling the sound sensing module.

[0009] In an optional implementation of the present invention, the suction cup rubber sleeve includes an outer shell for accommodating the sound sensing module and a suction nozzle connected to one end of the outer shell for adsorption and connection with the door body; wherein The outer 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 The suction nozzle part extends out of the shell body to be suitable for being adsorbed on the door body to generate deformation.

[0010] In an optional implementation of the present invention, the housing comprises a housing body and a housing cover that are connected in a matching manner; and The shell body cooperates with the shell cover to form an assembly cavity for fixing the outer shell.

[0011] In an optional implementation of the present invention, the outer side wall of the outer shell is further provided with an annular flange; and The assembly cavity is provided with a limiting groove suitable for the annular flange to be embedded therein.

[0012] In an optional implementation of the present invention, the door opening device also includes a magnet disposed in the shell and suitable for being attracted to a magnetic attraction strip preset on the door body.

[0013] In an optional implementation of the present invention, a sound recognition module is provided in the control panel; The sound recognition module includes at least one recognition model; The sound recognition module is suitable for performing recognition processing on the sound information obtained by the sound sensing module according to a preset recognition model, and determining the recognition result of the corresponding sound information.

[0014] In an optional implementation of the present invention, the door push transmission chain includes at least one transmission gear; and The push rod is formed with a strip-shaped toothed portion suitable for meshing with a transmission gear located at a transmission terminal and included in a push-door transmission chain.

[0015] In an optional implementation of the present invention, the push rod is suitable for performing a door opening operation by linear motion; and The housing also includes a first sensing element for sensing an initial position corresponding to the linear motion trajectory of the push rod and a second sensing element for sensing an end position corresponding to the linear motion trajectory of the push rod.

[0016] In an optional implementation of the present invention, the drive assembly includes a worm motor for engaging with a transmission gear located at the transmission starting end included in the push door transmission chain.

[0017] The terminal product of the present invention is achieved as follows: A terminal product comprises a cabinet body and a cabinet door used in combination, and a door opening device arranged in the cabinet body.

[0018] By adopting the above technical scheme, the present invention has the following beneficial effects: the door opening device of the present invention and the terminal product using the same cooperate with the control panel through the sound sensing module provided, so that the sound sensing module is suitable for obtaining the sound information triggered by knocking on the door body and sending it to the control panel, so as to control the driving component to drive the door push transmission chain to operate so that the push rod performs the door opening operation. Under this structure, there is no need to limit the knocking area for knocking on the door body. As long as the knocking sound can be generated on the door body, the sound can be transmitted to the sound sensing module in the door opening device through the door body, and the door body can be opened. Therefore, the flexibility and convenience of use are enhanced. In this case, there is no need to improve the door body, and there is no need to set a touch screen and a vibration signal collector on the door body. Therefore, the layout of the overall door opening device on the terminal product can be simplified, and the convenience of its overall assembly and maintenance can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the exploded structure of the door opening device of the present invention; Figure 2 It is a schematic diagram of the internal structure of the door opening device of the present invention; Figure 3 It is a schematic diagram of the exploded structure of the sound sensing module and the suction cup rubber sleeve of the door opening device of the present invention; Figure 4 It is a schematic diagram of the structure of the door opening device of the present invention in a state where the suction cup rubber sleeve and the door body are adsorbed; Figure 5 It is a schematic diagram of the internal structure of the door opening device of the present invention when the suction cup rubber sleeve is adsorbed to the door body; Figure 6 It is a schematic diagram of the matching structure of the push rod and the second sensing element of the door opening device of the present invention; Figure 7 It is a schematic diagram of the matching structure of the pressing block and the second sensing element of the door opening device of the present invention; Figure 8 It is a schematic diagram of the matching structure of the pressing block and the first sensing element of the door opening device of the present invention; Fig. 9 It is a schematic diagram of the exploded structure of the push rod and the shell body of the door opening device of the present invention; Fig.10 yes Fig. 9 A magnified view of part B; Fig.11 It is a schematic structural diagram of the shell body of the door opening device of the present invention.

[0020] In the figure: shell body 11, shell cover 12, strip limit block 13, guide rib 15, assembly cavity 16, limit slot 17, push rod 2, strip toothed portion 21, pressure block 22, strip limit slot 23, guide slot 25, transmission gear 3, worm motor 4, first sensing element 51, second sensing element 52, trigger end 53, sound sensing module 61, control board 62, sound recognition module 63, suction cup rubber sleeve 7, outer shell 71, suction nozzle 72, annular flange 73, accommodating cavity 75, magnet 81, magnetic strip 82, door body 100. DETAILED DESCRIPTION

[0021] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0022] Embodiment 1: See also Figures 1 to 11 As shown, this embodiment provides a door opening device, including: a shell and a door pushing assembly, a driving assembly and a control assembly arranged in the shell.

[0023] Specifically, the shell includes a shell body 11 and a shell cover 12 that are connected to each other; the door push assembly includes a push rod 2 suitable for pushing the door body 100 and a door push transmission chain for driving the push rod 2 to move; and the driving assembly is used to drive the door push transmission chain to operate.

[0024] In this regard, an optional implementation is given as an example in conjunction with the accompanying drawings. The push rod 2 is suitable for performing a door opening operation through linear motion. Based on this, a strip-shaped toothed portion 21 arranged along its linear motion direction is formed on the push rod 2. In order to meet the movement requirements of the push rod 2, the door push transmission chain includes at least one transmission gear 3. The accompanying drawings of this embodiment take the case of setting three transmission gears 3 as an example. One of the transmission gears 3 is located at the transmission terminal for engaging with the strip-shaped toothed portion 21 of the push rod 2, and the other transmission gear 3 is located at the transmission starting end for connecting to the drive assembly. The drive assembly here can optionally adopt, for example but not limited to, a worm motor 4, and another transmission gear 3 is not directly connected to the drive assembly and the strip-shaped toothed portion 21 of the push rod 2.

[0025] On the basis of the above structure, in an optional embodiment, in order to accurately grasp the motion 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 a 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 in an open state relative to the cabinet door) are also provided in the housing. The first sensing element 51 and the second sensing element 52 here can both adopt micro switches, and for this, 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 both connected to the control component, so that the control component can adjust the state of the drive component in time after receiving the signals of the first sensing element 51 and the second sensing element 52.

[0026] In more detail, in conjunction with the accompanying 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 at intervals along a direction parallel to the linear motion trajectory of the push rod 2, and the pressing block 22 is convexly arranged on the side end of the push rod 2 facing the first sensing element 51 and the second sensing element 52, and when the pressing block 22 moves linearly with the push rod 2, the pressing block 22 moves in the interval formed by the first sensing element 51 and the second sensing element 52. In this regard, the triggering ends 53 of the first sensing element 51 and the second sensing element 52 are both oriented toward the above-mentioned interval, so that the movement of the pressing block 22 in the above-mentioned 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 used to trigger the first sensing element 51 and the second sensing element 52 are two different end faces, based on this, 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 the triggering.

[0027] On the basis of the above structure, it is necessary to explain that in an optional implementation, for the linear motion process of the push rod 2, considering that it corresponds to the door body 100 pushed open and closed states and moves to two extreme positions, it is necessary for the pressure block 22 to trigger the corresponding sensing element. 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 two extreme positions of the linear motion process of the push rod 2 are limited in this embodiment. With reference to the accompanying drawings, an optional situation is given as an example. An adaptive limiting component is provided between the shell body 11 and the push rod 2. The limiting component includes a strip-shaped limiting groove 23 provided on the push rod 2 and a strip-shaped limiting block 13 provided in the shell body, wherein the strip-shaped limiting block 13 is provided on the shell body 11 at an opening where the push rod 2 is extended out, close to the preset opening of the shell body 11. Here, the strip-shaped limit block 13 and the strip-shaped limit groove 23 both extend along the linear motion direction of the push rod 2, and the length of the strip-shaped limit groove 23 is much greater than the length of the strip-shaped limit block 13. Here, the length of the strip-shaped limit 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 limit block 13 abuts against one end of the strip-shaped limit groove 23, and when the push rod 2 is in the closed state to the corresponding limit position corresponding to the door body 100, the other end of the strip-shaped limit block 13 abuts against the other end of the strip-shaped limit groove 23. Under this design, the pressing 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.

[0028] In addition, it should be noted that a guide structure for limiting the linear motion trajectory of the push rod 2 is provided between the shell and the push rod 2. The guide structure can be, for example but not limited to, a guide groove 25 provided on the push rod 2 and a guide rib 15 adapted to the guide groove 25 provided on the shell body 11.

[0029] Next, the triggering process of the door opening operation of the door opening device of this embodiment will be explained in detail: In this embodiment, the operating state of the driving assembly is controlled by the control assembly. Generally, the control assembly includes a control board 62 connected to the driving assembly and disposed in the housing, and a sound sensing module 61 connected to the control board 62. The sound sensing module 61 is adapted to obtain the sound information triggered by knocking on the door body 100 and send it to the control board 62, so as to control the driving assembly to drive the door push transmission chain to operate so that the push rod 2 performs the door opening operation.

[0030] Based on the above situation, a sound recognition module 63 is also provided in the control panel 62; the sound recognition module 63 here includes at least one recognition model; the sound recognition module 63 is suitable for recognizing and processing the sound information obtained by the sound sensing module 61 according to a preset recognition model, and determining the recognition result of the corresponding sound information.

[0031] Exemplarily, according to one or more recognition models pre-stored in the control panel 62, the sound information is identified and processed, the validity of the sound information is determined, and the recognition result of the sound information is determined. If the recognition is passed, the control panel 62, based on the preset control logic, issues a control instruction corresponding to the sound information to control the operation of the drive component, thereby driving the push door transmission chain to operate so that the push rod 2 performs the door opening operation. If the recognition is not passed, the control panel 62 will not issue a control instruction to control the operation of the drive component. For example, the preset control logic here requires two consecutive knocks on the door body 100 to produce two knocking sounds to pass the recognition, then knocking once will not pass the recognition. Of course, it can be understood here that in order to facilitate the sound sensing module 61 to obtain reliable sounds, the decibel of the sound generated by the knocking also needs to meet certain conditions. Therefore, the number of sounds generated by the knocking that can be recognized and the decibel of the corresponding sound are preset in the control logic, and the knocking sound below the minimum decibel requirement and the knocking sound that does not meet the number of requirements cannot be recognized. The coordination principle between the control panel 62 and the sound recognition module 63, the sound sensing module 61 and the driving assembly can be selected from the mature means in the prior art, such as but not limited to a method for controlling an intelligent device by knocking sound disclosed in publication number CN102999279A, and also such as but not limited to a device control method, apparatus and storage medium based on knocking disclosed in publication number CN116795318A.

[0032] On the basis of the above structure, it should be noted that the knocking sound generated by the door body 100 needs to be collected by the sound sensing module 61, so the sound sensing module 61 is set at the side end of the shell closest to the door body 100. In this regard, a mounting portion for fixing the sound sensing module 61 is provided at the end of the shell facing the door body 100. Under this structure, when the door body 100 is in a closed state relative to the cabinet door, the distance between the sound sensing 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 sensing module 61 as quickly as possible.

[0033] Based on the above situation, it should also be noted that the efficiency of sound propagation in different media is different. Specifically, the speed of sound propagation in solid media is greater than that in liquid media, and the speed of sound propagation in liquid media is greater than that in gaseous media. It can be seen that the speed of sound propagation in solid media is the fastest. In order to simplify the convenience of using the door opening device, this embodiment does not need to preset a fixed knocking area on the door body 100. As long as the door body 100 surface can be knocked to produce a sound that meets the decibel requirements and the number of knocking requirements, the control panel 62 can control the drive assembly to drive the door push transmission chain to operate so that the push rod 2 performs the door opening operation.

[0034] On the basis of the above situation, due to the different paths of the knocking sound propagating to the sound sensing module 61 when knocking on different areas of the door body 100, the reaction time for executing the door opening operation in response to the knocking sound will also be different, that is, there must be a certain delay between executing the door opening operation and knocking on the door body 100 to generate the sound. And because the sound sensing 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 still needs to propagate through the air to be collected by the sound sensing module 61. Therefore, in view of the above propagation path, in order to shorten the delay time of executing the door opening operation after knocking on the door body 100 to generate the knocking sound as much as possible, this embodiment is designed as follows: The sound sensing module 61 is assembled into a suction cup rubber sleeve 7. Specifically, the suction cup rubber sleeve 7 includes an outer shell 71 for accommodating the sound sensing module 61 and a suction nozzle 72 connected to one end of the outer shell 71 for adsorption and connection with the door body 100; wherein the outer shell 71 has a receiving cavity 75 for assembling the sound sensing module 61, and the receiving cavity 75 is tightly matched with the outer side wall of the sound sensing module 61; and the suction nozzle 72 partially extends out of the shell to be suitable for adsorption with the door body 100 to produce deformation. In this regard, for example, a situation that is easy to process, the shape of the sound sensing module 61 can be selected as a cylindrical shape, and the corresponding receiving cavity 75 is a hollow cylindrical cavity, and the suction cup rubber sleeve 7 itself is made of a material with certain micro-deformation performance, and the overall structure of the suction cup rubber sleeve 7 is simple and low in cost, so that the sound sensing module 61 can be closely matched with the outer side wall of the receiving cavity and the sound sensing module 61 through the interference fit between the sound sensing module 61 and the receiving cavity, and the close fit between the two here is mainly to prevent air from entering the receiving cavity from the matching gap between the two.

[0035] For the shell, in order to meet the use requirements of the above-mentioned suction cup rubber sleeve 7, the shell body 11 of this embodiment cooperates with the shell cover 12 to form an assembly cavity 16 for fixing the outer shell 71. In this regard, considering the convenience of assembling the suction cup rubber sleeve 7 and the assembly cavity 16 and ensuring that the suction cup rubber sleeve 7 is reliably fixed in the assembly cavity 16, the outer wall of the outer shell 71 in this embodiment is also provided with an annular flange 73; and the assembly cavity 16 is provided with a limiting groove 17 suitable for the annular flange 73 to be embedded therein. In a specific optional case, the annular flange 73 is arranged on the outer wall of the outer shell 71 away from the suction nozzle 72, so that the annular flange 73 is not affected. The normal use of the suction nozzle 72 is achieved by the cooperation of the limiting groove 17 and the annular flange 73 to limit the axial direction of the outer shell 71, and the radial limit of the outer shell 71 is achieved by the cooperation of the shell cover 12 and the shell body 11 so that the assembly cavity 16 produces a micro-extrusion of the radial dimension of the suction cup rubber sleeve 7.

[0036] In addition, in order to ensure that the door body 100 and the cabinet body can form a reliable fit when the door body 100 is in a closed state relative to the cabinet body, the door opening device of this embodiment also includes a magnet 81 arranged in the shell and suitable for being attracted to the magnetic strip 82 preset on the door body 100.

[0037] Through 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 magnetic strip preset on the door body 100 is 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 fitted with the door body 100 under the action of the external atmospheric pressure. In this way, a solid medium suitable for the propagation of the sound generated by knocking on the door body 100 can be formed between the sound sensing module 61 built into the receiving cavity of the suction cup rubber sleeve 7 and the door body 100, that is, the sound generated by knocking on 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 collection effect is better. 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 on the outside of the door body 100 can also be eliminated.

[0038] In summary, for the door opening device of this embodiment, the sound sensing module 61 is provided to cooperate with the control board 62, so that the sound sensing module 61 is suitable for obtaining the sound information triggered by knocking on the door body 100 and sending it to the control board 62, so as to control the driving component to drive the door push transmission chain to operate so that the push rod 2 performs the door opening operation. Under this structure, it is no longer necessary to limit the knocking area for knocking on the door body 100. As long as the knocking sound can be generated on the door body 100, the sound can be transmitted to the sound sensing module 61 in the door opening device through the door body 100, and the door body 100 can be opened. Therefore, the flexibility and convenience of use are enhanced. Furthermore, through the design of the suction cup rubber sleeve 7, the sound generated by knocking on the door body 100 can be propagated as a whole in the solid medium, which speeds up the propagation speed, thereby reducing the sense of delay in the operation of the push rod 2 of the door body 100.

[0039] Embodiment 2: Based on the door opening device of Example 1, this embodiment provides a terminal product, including: a cabinet and a cabinet door used together, and a door opening device as in Example 1 arranged in the cabinet. 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 this embodiment does not make an absolute limitation on the terminal product in this embodiment.

[0040] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0041] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A door opening device, characterized in that: include: case; A door push assembly, comprising a push rod disposed in a housing and adapted to push a door body and a door push transmission chain for driving the push rod to move; A driving assembly is disposed in the housing and is used to drive the sliding door transmission chain to operate; as well as A control assembly, comprising a control board disposed in the housing and connected to the drive assembly, and a sound sensing module connected to the control board; in The sound sensing module is suitable for acquiring the sound information triggered by knocking on the door body and sending it to the control panel to control the driving component to drive the door push transmission chain to operate so that the push rod performs the door opening operation.

2. The door opening device according to claim 1, characterized in that: The door opening device also includes a suction cup rubber sleeve for assembling the sound sensing module.

3. The door opening device according to claim 2, characterized in that: The suction cup rubber sleeve includes an outer shell for accommodating the sound sensor module and a suction nozzle connected to one end of the outer shell for adsorption and connection with the door body; wherein The outer 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 The suction nozzle part extends out of the shell body to be suitable for being adsorbed on the door body to generate deformation.

4. The door opening device according to claim 3, characterized in that: The housing comprises a housing body and a housing cover which are connected in a matching manner; and The shell body cooperates with the shell cover to form an assembly cavity for fixing the outer shell.

5. The door opening device according to claim 4, characterized in that: The outer side wall of the outer shell is also provided with an annular flange; and The assembly cavity is provided with a limiting groove suitable for the annular flange to be embedded therein.

6. The door opening device according to any one of claims 1 to 5, characterized in that: The door opening device also includes a magnet arranged in the shell and suitable for being attracted to a magnetic attraction strip preset on the door body.

7. The door opening device according to claim 1, characterized in that: The control panel is provided with a sound recognition module; The sound recognition module includes at least one recognition model; The sound recognition module is suitable for performing recognition processing on the sound information obtained by the sound sensing module according to a preset recognition model, and determining the recognition result of the corresponding sound information.

8. The door opening device according to claim 1, characterized in that: The push-door transmission chain includes at least one transmission gear; and The push rod is formed with a strip-shaped toothed portion suitable for meshing with a transmission gear located at a transmission terminal and included in a push-door transmission chain.

9. The door opening device according to claim 8, characterized in that: The push rod is suitable for performing a door opening operation through linear motion; and The housing also includes a first sensing element for sensing an initial position corresponding to the linear motion trajectory of the push rod and a second sensing element for sensing an end position corresponding to the linear motion trajectory of the push rod.

10. The door opening device according to claim 8 or 9, characterized in that: The driving assembly comprises a worm motor for meshing with a transmission gear located at the transmission start end of the push door transmission chain.

11. A terminal product, characterized in that: include: A cabinet body and a cabinet door used in combination, and a door opening device as claimed in any one of claims 1 to 10 arranged in the cabinet body.

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