Electric door opening device

Abstract

The utility model discloses an electric door opening device which comprises a shell. The door opening driving device is mounted on the shell and comprises an ejector rod and a driving unit for driving the ejector rod to act; the door opening sensing device is installed on the shell and comprises a sensing assembly and a sensing button, the sensing button can be triggered to act by being pressed by the door body, and the sensing assembly detects the action of the sensing button; and the control device is installed on the shell, and the driving unit and the sensing assembly are electrically connected to the control device. According to the electric door opening device, the door opening sensing device and the door opening driving device are integrated on the electric door opening device, the electric door opening device only needs to be installed on furniture such as a refrigerator, door body action detection and door body ejection opening can be achieved, the integrated arrangement reduces the overall occupied space of the door opening driving device and the door opening sensing device, and the overall occupied space is reduced. And the size of the electric door opening device is reduced, so that more installation positions can be selected during installation of the electric door opening device.

Description

Technical Field

[0001] The utility model belongs to the field of electrical appliances, and in particular relates to an electric door opening device. Background Art

[0002] At present, refrigerators and other furniture on the market that need to be completely embedded in the wall are usually provided with sensors for detecting the opening and closing of doors and push rods for pushing doors. For example, application number "CN201080020591.9" and title "Ejection device for movable furniture parts and method for controlling the ejection device" discloses a box-type furniture body, on which the sensor device and the ejection ejector rod are separately installed, so that the sensor device and the ejector rod occupy a large space, and the two need to be installed separately during assembly, which is very inconvenient. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an electric door opening device to solve the problem of high difficulty in assembling a door opening drive device and a door opening sensing device.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: an electric door opening device, including a shell; and a door opening drive device installed on the shell, including a push rod and a drive unit for driving the push rod to move; and a door opening sensing device installed on the shell, including a sensor component and a sensing button, the sensing button can be triggered by pressing the door body, and the sensing component detects the movement of the sensing button; and a control device installed on the shell, the driving unit and the sensing component are electrically connected to the control device respectively.

[0005] In the above-mentioned electric door opening device, the sensing component is a linear Hall component, the sensing button is provided with a magnet, and the linear Hall component detects the action of the sensing button by sensing the magnetic field strength of the magnet.

[0006] In the above-mentioned electric door opening device, the linear Hall component includes a detection circuit board and a linear Hall sensor packaged on the detection circuit board in a surface mount manner, and the detection circuit board is mounted on the housing.

[0007] In the above-mentioned electric door opening device, the sensing button includes a button and a reset spring, the magnet is arranged on the button, and the reset spring respectively abuts against the button and the shell to push the button to reset.

[0008] In the above-mentioned electric door opening device, the driving unit includes a screw rod, a screw rod nut matched with the screw rod thread, and a motor driving the screw rod to rotate, and the push rod is installed on the screw rod nut.

[0009] In the above-mentioned electric door opening device, the push rod is sleeved on the screw nut, and the push rod and the screw nut are interference fit; or, the push rod is sleeved on the screw nut, and the push rod and the screw nut are threadedly connected.

[0010] In the above-mentioned electric door opening device, a shock-absorbing pad is provided outside the shell.

[0011] In the above-mentioned electric door opening device, a first noise reduction member is provided at one end of the top rod facing the door body; and / or a second noise reduction member is provided at one end of the sensing button facing the door body.

[0012] In the above-mentioned electric door opening device, the control device has a speed encoder, and the speed encoder is electrically connected to the driving unit to control the ejection speed of the ejector rod.

[0013] In the above-mentioned electric door opening device, the shell includes an upper shell and a lower shell that are detachably connected, and the upper shell and the lower shell are covered to form a accommodating chamber for accommodating the door opening drive device, the door opening sensing device and the control device.

[0014] The beneficial effects of the utility model are:

[0015] An electric door opening device includes a housing; a door opening drive device installed on the housing, including a push rod and a drive unit for driving the push rod; a door opening sensing device installed on the housing, including a sensor component and a sensing button, the sensing button can be triggered by pressing the door body, and the sensing component detects the movement of the sensing button; and a control device installed on the housing, the driving unit and the sensing component are electrically connected to the control device respectively. The technical solution has the following technical effects:

[0016] The utility model is provided by installing the door opening driving device and the door opening sensing device on the same housing at the same time, so that the door opening sensing device for detecting the movement of the door body and the door opening driving device for pushing the door body are integrated on the electric door opening device. The electric door opening device only needs to be installed on furniture such as refrigerators to realize the detection of the movement of the door body and the pushing of the door body. The integrated setting reduces the overall occupied space of the door opening driving device and the door opening sensing device, reduces the volume of the electric door opening device, and makes it possible to have more installation positions to choose when installing it. When the door body is closed, the door opening sensing device is not triggered. When the user needs to open the door, he only needs to press the door body, and the door body presses the sensing button to trigger the door opening sensing device. The sensing component detects the movement of the sensing button and transmits it to the control device. Then, the control device controls the driving unit to drive the push rod to move to push the door body to realize the door opening action. The operation is simple and labor-saving. Especially when it is installed on furniture such as built-in refrigerators without structures such as door handles, it can greatly improve the user experience.

[0017] The sensing component is a linear Hall component, and the sensing button is equipped with a magnet. The linear Hall component detects the action of the sensing button by sensing the magnetic field strength of the magnet. The use of a linear Hall component in the sensing component can greatly improve the sensitivity of the sensing component detection, because the data waveform generated by the linear Hall component is different when the door body is pressed normally (that is, the user has the need to open the door and presses the door body) and when the door body is pressed abnormally (that is, the user accidentally touches the door body). The control device will only recognize the user's intention to open the door when it receives the characteristic data waveform, and then control the door opening drive device to push the door body open. Therefore, abnormal pressing of the door body will not cause the door body to open, avoiding accidental door opening, and the user experience is good.

[0018] The linear Hall component includes a detection circuit board and a linear Hall sensor packaged on the detection circuit board in a surface mount manner. The detection circuit board is mounted on the housing, which is convenient for installation and greatly reduces the occupied space of the linear Hall component.

[0019] The induction button includes a button and a reset spring. The magnet is arranged on the button. The reset spring abuts against the button and the housing respectively to push the button to reset. When the user presses the door body, the door body pushes the button to move so that the button squeezes the reset spring. When the door body does not press the button, the button can automatically reset under the push of the reset spring for the next press detection. The reset method is simple and reliable.

[0020] The driving unit includes a screw, a screw nut matched with the screw thread, and a motor driving the screw to rotate, and the push rod is installed on the screw nut. When the motor drives the screw to rotate by rotating, the screw nut moves along the axial direction of the screw, and at the same time drives the push rod to move along the axial direction of the screw, so that the push rod extends out of the shell to push the door body or retracts into the shell. The screw and the screw nut can convert rotation into linear movement. As the driving unit of the push rod, the push rod has the advantage of high transmission accuracy, which has a better effect on the top opening of the door body. At the same time, the screw and the screw nut have a simple structure, which is easy to produce and maintain, and can reduce the production cost of the driving unit.

[0021] A shock-absorbing pad is provided outside the shell. When the electric door opening device is installed on furniture such as a refrigerator, the shock-absorbing pad is located between the shell and the inner wall of the furniture to reduce resonance between the electric door opening device and the furniture and reduce noise.

[0022] The control device has a speed encoder, which is electrically connected to the drive unit to control the ejection speed of the ejector rod so that the ejector rod can stably push doors of various weights to open, making the electric door opening device more applicable.

[0023] The housing includes an upper housing and a lower housing that are detachably connected, and the upper housing and the lower housing are covered to enclose a receiving chamber for receiving a door opening drive device, a door opening sensing device, and a control device. The arrangement of the detachably connected upper housing and the lower housing allows the receiving chamber to be opened when the door opening drive device, the door opening sensing device, or the control device is damaged, so that they can be repaired and replaced separately, thereby reducing the repair difficulty and repair cost of the electric door opening device.

[0024] The features and advantages of the present invention will be disclosed in detail in the following specific implementations and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0026] Figure 1 This is an internal schematic diagram of an electric door opening device of the utility model;

[0027] Figure 2 This is a schematic diagram of the interior of an electric door opening device of the utility model when the top rod is disassembled;

[0028] Figure 3 This is an exploded view of an electric door opening device of the utility model;

[0029] Reference numerals:

[0030] 100, housing; 110, upper housing; 120, lower housing; 130, accommodating chamber; 140, shock-absorbing pad; 150, pressing groove; 151, stop step;

[0031] 200, door opening drive device; 210, top rod; 211, first noise reduction member; 220, drive unit; 221, screw rod; 222, screw rod nut; 223, motor;

[0032] 300, door opening sensing device; 310, sensing component; 311, linear Hall component; 3111, detection circuit board; 3112, linear Hall sensor; 320, sensing button; 321, button; 3211, limit protrusion; 322, reset spring; 323, second noise reduction component;

[0033] 400. Control device. DETAILED DESCRIPTION

[0034] The utility model proposes an electric door opening device, comprising a housing; and a door opening drive device installed on the housing, comprising a push rod and a driving unit for driving the push rod to move; and a door opening sensing device installed on the housing, comprising a sensor component and a sensing button, the sensing button can be triggered to move by pressing the door body, and the sensing component detects the movement of the sensing button; and a control device installed on the housing, the driving unit and the sensing component are electrically connected to the control device respectively. The utility model integrates the door opening sensing device for detecting the movement of the door body and the door opening drive device for pushing the door body open on the electric door opening device by installing the door opening drive device and the door opening sensing device on the same housing at the same time. The electric door opening device only needs to be installed on furniture such as refrigerators to detect the movement of the door body and push the door body open. The integrated setting reduces the overall occupied space of the door opening drive device and the door opening sensing device, reduces the volume of the electric door opening device, and allows more installation positions to be selected when installing it. When the door body is closed, the door opening sensor is not triggered. When the user needs to open the door, he only needs to press the door body, and the door body presses the sensing button to trigger the door opening sensor. The sensor component detects the action of the sensing button and transmits it to the control device. Then, the control device controls the drive unit to drive the push rod to move to push open the door body and realize the door opening action. The operation is simple and labor-saving, especially when it is installed on furniture such as built-in refrigerators without structures such as door handles, it can greatly improve the user experience.

[0035] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] Embodiment 1:

[0041] An electric door opening device, such as Figures 1 to 3 As shown, the housing 100 includes a door opening driving device 200, a door opening sensing device 300 and a control device 400 installed on the housing 100. The housing 100 includes a detachably connected upper housing 110 and a lower housing 120, and the upper housing 110 and the lower housing 120 are covered to enclose a receiving chamber 130 for receiving the door opening driving device 200, the door opening sensing device 300 and the control device 400. The door opening driving device 200 includes a push rod 210 and a driving unit 220 for pushing open the door body; the door opening sensing device 300 includes a sensor component 310 and a sensing button 320, and the door opening sensing device 300 is triggered when the door body presses the sensing button 320, so that the sensor component 310 detects the action of the sensing button 320; the control device 400 is electrically connected to the door opening driving device 200 and the door opening sensing device 300 respectively, so as to control the door opening driving device 200 to push open the door body when the door opening sensing device 300 detects the door opening action.

[0042] The utility model simultaneously installs a door opening drive device 200 and a door opening sensing device 300 on the same housing 100, so that the door opening sensing device 300 for detecting the movement of the door body and the door opening drive device 200 for pushing the door body open are integrated on the electric door opening device. The electric door opening device only needs to be installed on furniture such as refrigerators to detect the movement of the door body and push the door body open. The integrated arrangement reduces the overall occupied space of the door opening drive device 200 and the door opening sensing device 300, reduces the size of the electric door opening device, and has more installation positions to choose from when installing it. When the door body is closed, the door opening sensing device 300 is not triggered. When the user needs to open the door, he only needs to press the door body, and the door body presses the sensing button 320 to trigger the door opening sensing device 300. The sensor component 310 detects the action of the sensing button 320 and transmits it to the control device 400. Then, the control device 400 controls the driving unit 220 to drive the push rod 210 to move to push open the door body and realize the door opening action. The operation is simple and labor-saving, especially when it is installed on furniture such as built-in refrigerators without structures such as door handles, it can greatly enhance the user experience.

[0043] In this embodiment, the sensing component 310 is a linear Hall component 311. A magnet is disposed on the sensing button 320. The magnet can move with the sensing button 320. The linear Hall component 311 can detect the movement of the sensing button 320 by sensing the magnetic field strength of the magnet. The sensor component 310 adopts the linear Hall component 311 to greatly improve the detection sensitivity of the sensor component 310, because the data waveform generated by the linear Hall component 311 is different when the door body is pressed normally (that is, the user presses the door body to open the door) and when the door body is pressed abnormally (that is, the user accidentally touches the door body). For example, normal pressing of the door body causes the sensing button 320 to move a distance of 1mm to 3mm, which can trigger the set characteristic data waveform, but abnormal pressing of the door body will only cause the sensing button 320 to move a distance of 0.5mm or 4mm, and cannot maintain the set time, so the set characteristic data waveform cannot be triggered. The control device 400 will only recognize the user's intention to open the door when it receives the characteristic data waveform, and then control the door opening drive device 200 to push the door body open. Therefore, abnormal pressing of the door body will not cause the door body to open, avoiding accidental door opening, and the user experience is good. The linear Hall component 311 includes a detection circuit board 3111 and a linear Hall sensor 3112. The linear Hall sensor 3112 is surface-mounted on the detection circuit board 3111. The detection circuit board 3111 is installed on the housing 100, which is convenient for installation and greatly reduces the space occupied by the linear Hall component 311. The detection circuit board 3111 is located on one side of the sensing button 320, which has a better detection effect on the magnet on the sensing button 320.

[0044] like Figure 1 and Figure 2As shown, in this embodiment, the sensing button 320 includes a button 321 and a reset spring 322. A pressing groove 150 is provided on the housing 100. The button 321 is slidably connected in the pressing groove 150. The magnet is provided on the button 321. The reset spring 322 is also provided in the pressing groove 150. The two ends of the reset spring 322 respectively abut against the end of the button 321 and the inner wall of the pressing groove 150, and the button 321 is pushed in the direction of extending out of the pressing groove 150, so as to push the button 321 to reset. A limiting protrusion 321 is provided on the side wall of the button 321. 1. A stop step 151 is provided on the inner wall of the installation groove. When the user does not press the door body, the button 321 extends out of the pressing groove 150 under the push of the reset spring 322. At this time, the limit protrusion 3211 abuts against the stop step 151 to prevent the button 321 from freely escaping from the pressing groove 150. When the user presses the door body, the door body pushes the button 321 into the pressing groove 150, so that the button 321 drives the magnet to slide into the pressing groove 150 and squeeze the reset spring 322, so that the linear Hall component 311 can detect the movement of the magnet. The setting of the reset spring 322 enables the button 321 to automatically reset under the push of the reset spring 322 when the door body does not press the button 321, so as to provide for the next press detection. The reset method is simple and reliable.

[0045] like Figure 2 As shown, the drive unit 220 includes a screw rod 221, a screw nut 222 and a motor 223. The end of the screw rod 221 is connected to the motor 223. The screw nut 222 is sleeved on the screw rod 221 and threadedly connected to the screw rod 221. The screw nut 222 is slidably connected to the shell 100, so that the shell 100 can limit the screw nut 222 in the circumferential direction, that is, to prevent the screw nut 222 from rotating. The push rod 210 is installed on the screw nut 222. When the motor 223 drives the screw rod 221 to rotate by rotating, the screw nut 222 moves along the axial direction of the screw rod 221, so as to simultaneously drive the push rod 210 to move along the axial direction of the screw rod 221, so that the push rod 210 extends out of the shell 100 to push the door body or retracts into the shell 100. The screw rod 221 and the screw nut 222 can convert rotation into linear movement. As the driving unit 220 of the top rod 210, the top rod 210 has the advantage of high transmission accuracy and better opening effect on the door body. At the same time, the screw rod 221 and the screw nut 222 have a simple structure, which is easy to produce and maintain, and can reduce the production cost of the driving unit 220.

[0046] The push rod 210 and the screw nut 222 may be fixedly connected, may be an integral structure, or may be detachably connected. In this embodiment, the push rod 210 and the screw nut 222 are detachably connected. If a power outage occurs when the push rod 210 pushes the door body but fails to retract into the housing 100, the user can manually close the door body by removing the push rod 210 from the screw nut 222 to avoid the push rod 210 extending and hindering the closing of the door body. Preferably, the push rod 210 is sleeved on the screw nut 222, and the push rod 210 and the screw nut 222 have an interference fit. The user can remove or reinstall the push rod 210 by force, and the operation is convenient and simple. Of course, it is understandable that the push rod 210 and the screw nut 222 can also be threadedly connected, and the user can realize the disassembly and assembly of the push rod 210 and the screw nut 222 by rotating.

[0047] In this embodiment, a shock-absorbing pad 140 is provided outside the housing 100. When the electric door opening device is installed on a piece of furniture such as a refrigerator, the shock-absorbing pad 140 is located between the housing 100 and the inner wall of the furniture to reduce the resonance between the electric door opening device and the furniture and reduce noise. In order to further reduce noise, in this embodiment, a first noise reduction member 211 is provided at one end of the top rod 210 facing the door body to provide buffering when the top rod 210 collides with the door body. At the same time, a second noise reduction member 323 is provided at one end of the sensing button 320 facing the door body to provide buffering when the door body collides with the sensing button 320. The first noise reduction member 211 and the second noise reduction member 323 can be made of materials such as rubber or silicone to improve the user experience. Of course, the above method is only a preferred solution of this embodiment, and the first noise reduction member 211 can also be provided only at one end of the top rod 210 facing the door body, or the second noise reduction member 323 can be provided only at one end of the sensing button 320 facing the door body.

[0048] In this embodiment, the control device 400 has a speed encoder, which is electrically connected to the drive unit 220 for controlling the ejection speed of the ejector rod 210 so that the ejector rod 210 can stably push doors of various weights to open, thereby making the electric door opening device more applicable.

[0049] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An electric door opening device, characterized in that: include a housing; and A door opening drive device installed on the housing includes a push rod and a drive unit for driving the push rod; as well as, The door opening sensing device installed on the housing includes a sensing component and a sensing button, wherein the sensing button can be triggered to move when the door is pressed, and the sensing component detects the movement of the sensing button; as well as, A control device is installed on the housing, and the drive unit and the sensor assembly are electrically connected to the control device respectively.

2. An electric door opening device according to claim 1, characterized in that: The sensing component is a linear Hall component, the sensing button is provided with a magnet, and the linear Hall component detects the action of the sensing button by sensing the magnetic field strength of the magnet.

3. The electric door opening device according to claim 2, characterized in that: The linear Hall assembly comprises a detection circuit board and a linear Hall sensor which is packaged on the detection circuit board in a surface mount manner. The detection circuit board is mounted on the housing.

4. The electric door opening device according to claim 2, characterized in that: The sensing button comprises a key and a reset spring, the magnet is arranged on the key, and the reset spring respectively abuts against the key and the housing to push the key to reset.

5. The electric door opening device according to claim 1, characterized in that: The driving unit comprises a screw rod, a screw rod nut matched with the screw rod thread and a motor driving the screw rod to rotate, and the push rod is installed on the screw rod nut.

6. The electric door opening device according to claim 5, characterized in that: The push rod is sleeved on the screw nut, and the push rod and the screw nut are interference fit; or, the push rod is sleeved on the screw nut, and the push rod and the screw nut are threadedly connected.

7. The electric door opening device according to claim 1, characterized in that: A shock-absorbing pad is arranged outside the shell.

8. The electric door opening device according to claim 1, characterized in that: A first noise reduction member is disposed at one end of the top rod facing the door body; and / or a second noise reduction member is disposed at one end of the sensing button facing the door body.

9. The electric door opening device according to claim 1, characterized in that: The control device has a speed regulating encoder, and the speed regulating encoder is electrically connected to the driving unit to control the ejection speed of the ejector rod.

10. The electric door opening device according to claim 1, characterized in that: The shell comprises an upper shell and a lower shell which are detachably connected, and the upper shell and the lower shell are covered to enclose a receiving chamber for receiving the door opening drive device, the door opening sensing device and the control device.

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