A sofa refrigerator magnet missing and misplacement detection device

Abstract

The application discloses a sofa refrigerator magnet missing and misplacing detection device, and aims to provide a magnet mounting process application suitable for sofa refrigerators, which can effectively solve the problems of magnet missing and magnet reverse mounting. The device comprises a base provided with a positioning structure, a sofa refrigerator supported on the base and positioned through the positioning structure, an in-place sensor arranged on the base, a detection magnet arranged on the base, and a magnet detection sensor arranged on the base. When the sofa refrigerator is supported on the base and positioned through the positioning structure, the opening of the magnet groove on the sofa refrigerator faces upward, the detection magnet corresponds to the magnet groove, and the detection magnet is located below the corresponding magnet groove and close to the magnet groove. The magnet detection sensor corresponds to the magnet groove, and the magnet detection sensor is located below the corresponding magnet groove.

Description

Technical Field

[0001] This invention relates to the field of sofa refrigerator manufacturing technology, specifically to a device for detecting missing or incorrectly installed magnets in sofa refrigerators. Background Technology

[0002] Most modern sofa refrigerators have magnets at the opening, and a magnet installation step is included in the assembly process. For example, Chinese Patent Publication No. CN106595204A, entitled "Refrigerator with Electromagnet Installed at the Door," details the magnet installation process for sofa refrigerators. The magnets must be installed according to their N / S polarity, placed correctly into the magnet slot, and then the slot opening is sealed with a cap. However, because magnets often lack N / S polarity markings and the installation is done manually, workers are prone to errors such as missing or reversing magnets during long hours and frequent shifts.

[0003] Secondly, the magnets are installed in a relatively hidden location and are covered by a cap; they cannot be visually inspected after installation, and it is impossible to determine if they are missing or installed backwards. They can only be checked through final inspection, and if any abnormalities are detected, the rework time will be considerable. Summary of the Invention

[0004] The purpose of this invention is to provide a detection device for missing or incorrectly installed magnets in sofa refrigerators, which can effectively solve the problems of missing or reversed magnet installation.

[0005] The technical solution of this invention is: A device for detecting missing or incorrectly installed magnets in sofas and refrigerators includes: The base has a positioning structure, and the sofa refrigerator is supported on the base and positioned by the positioning structure. In-situ sensor, mounted on the base; The detection magnet is mounted on the base. A magnet detection sensor is mounted on the base; When the sofa refrigerator is supported on the base and positioned by the positioning structure, the opening of the magnetic slot on the sofa refrigerator faces upwards. The detection magnet corresponds to the magnetic slot, and is located below and close to the corresponding magnetic slot. The magnet detection sensor corresponds to the magnetic slot, and is located below the corresponding magnetic slot. The specific use of this sofa refrigerator magnet misinstallation detection device is as follows. The sofa refrigerator to be fitted with magnets is placed on the base manually, and the sofa refrigerator is positioned by the positioning structure; at this time, the opening of the magnet slot on the sofa refrigerator is facing upward, and the in-place sensor detects that the sofa refrigerator is in place; the detection magnet corresponds to the magnet slot, and the detection magnet is located below and close to the corresponding magnet slot; the magnet detection sensor corresponds to the magnet slot, and the magnet detection sensor is located below the corresponding magnet slot.

[0006] Next, the operator installs the magnet to be installed into the magnet slot of the sofa refrigerator. At this time, because there is a detection magnet with the corresponding direction on the base, if the polarity of the magnet placed in the magnet slot of the sofa refrigerator is correct, the magnet in the magnet slot and the detection magnet will attract each other; if the polarity of the magnet placed in the magnet slot of the sofa refrigerator is reversed, the magnet in the magnet slot and the detection magnet will have opposite magnetic forces, pushing the magnet in the magnet slot upwards, or pushing the magnet in the magnet slot upwards and falling off. This reminds the operator that the polarity of the magnet placed in the magnet slot is reversed, forcing the operator to install the magnet in the magnet slot with the specified direction, effectively preventing the operator from installing the magnet with the wrong polarity.

[0007] Meanwhile, when a magnet is placed in the magnetic slot of the sofa refrigerator, the magnet detection sensor is triggered; if a magnet is missing from the magnetic slot, the magnet detection sensor is not triggered. Thus, the operator can be alerted by indicator lights or buzzers to the missing magnet. For example, if the magnet detection sensor is triggered, a green light will illuminate; if the magnet detection sensor is not triggered, a red light will illuminate and a buzzer will sound an alarm. This effectively avoids the problem of missing magnets and effectively manages standardized and quantified on-site operations.

[0008] Preferably, the positioning structure includes several limiting blocks disposed around the top surface of the base, with the sofa refrigerator supported on the top surface of the base and positioned between the limiting blocks. In this way, the sofa refrigerator supported on the top surface of the base can be positioned using the positioning structure, ensuring that the detection magnet aligns with the magnet slot and the magnet detection sensor aligns with the magnet slot.

[0009] Preferably, the top surface of the base is a contoured surface that matches the end face of the sofa refrigerator supported on the base. This allows for more precise positioning of the sofa refrigerator supported on the top surface of the base, reducing the rate of misjudgment.

[0010] Preferably, the device also includes a demagnetization triggering device, which comprises: An upward-facing magnet mounting slot is provided on the base, and the detection magnet is placed inside the magnet mounting slot; A spring receiving groove is provided on the bottom surface of the magnet mounting groove; A compression spring is provided in a spring receiving groove; A magnetic suction component is fixed to the bottom surface of the magnet mounting slot, the detection magnet is attracted and fixed to the magnetic suction component, and the upper end of the compression spring abuts against the detection magnet; When the magnetic strength of the detection magnet is lower than the set value, the compression spring will lift the detection magnet and separate it from the magnet mounting slot. During long-term use of the sofa refrigerator magnet misinstallation detection device, the detection magnet may demagnetize for various reasons, and this demagnetization often goes unnoticed by operators. Once the detection magnet demagnetizes, regardless of whether the polarity of the magnet placed in the magnet slot is reversed, the magnet will be supported at the bottom of the slot by its own weight, and will be considered to have the correct polarity. This makes it impossible to determine whether the magnet's polarity is reversed, and thus cannot prevent employees from incorrectly installing magnets. To address this issue, this solution incorporates a demagnetization trigger device. When the detection magnet is in normal condition, it is magnetically attached to the magnetic suction device on the bottom of the magnet mounting slot, with the upper end of the compression spring resting against it. This ensures the normal operation of the sofa / refrigerator magnet misinstallation detection device. However, when the magnetic strength of the detection magnet falls below a set value (including when the magnet becomes demagnetized), the compression spring lifts the magnet and separates it from the magnet mounting slot. Subsequently, the detection magnet cannot be properly installed into the slot. This alerts the operator to the malfunction of the detection magnet and forces them to replace it. A new detection magnet is then installed in the slot, magnetically attached to the magnetic suction device, with the upper end of the compression spring resting against it. This effectively solves the problem of demagnetization of the detection magnet, which makes it impossible to determine if the magnet in the slot is installed with the polarity reversed, and prevents employees from incorrectly installing magnets.

[0011] Preferably, the demagnetization triggering device also includes a pressure sensor, which is located at the bottom of the spring receiving groove, with the lower end of the compression spring abutting against the pressure sensor. Thus, when the detection magnet is in normal condition, it is magnetically attached to the magnetic suction device on the bottom surface of the magnet mounting groove, with the upper end of the compression spring abutting against the detection magnet and the lower end against the pressure sensor. The compression spring is compressed, and the pressure sensor can sense the pressure. When the magnetic strength of the detection magnet falls below a set value, the compression spring lifts the detection magnet, causing the pressure sensed by the pressure sensor to drop sharply, thereby issuing a warning to the operator indicating a malfunction in the detection magnet.

[0012] Preferably, the system also includes a controller equipped with a red light, a green light, a buzzer, and a time relay. The magnet detection sensor and the presence sensor are electrically connected to the controller. Thus, when a magnet is placed in the magnet slot of the sofa refrigerator, the magnet detection sensor is triggered, illuminating the green light; if the magnet detection sensor is not triggered, the red light illuminates and the buzzer sounds an alarm. This effectively prevents the problem of missing magnets and effectively manages standardized and quantified on-site operations.

[0013] Preferably, the base is provided with an upward-facing sensor mounting slot and a magnet mounting slot, with the magnet detection sensor located in the sensor mounting slot and the detection magnet located in the magnet mounting slot.

[0014] Preferably, there are two detection magnets, and each detection magnet corresponds to a magnet slot in the sofa refrigerator.

[0015] Preferably, the magnet detection sensor is a Hall sensor.

[0016] Preferably, there are two magnet detection sensors, and each magnet detection sensor corresponds to a magnet slot in the sofa refrigerator.

[0017] The beneficial effects of this invention are: Firstly, when the magnet placed in the magnet slot has the correct polarity, the magnet in the magnet slot and the detection magnet will attract each other; when the magnet placed in the magnet slot has the reverse polarity, the detection magnet will push the magnet in the magnet slot upwards or push it out of the magnet slot, thereby reminding the operator that the magnet in the magnet slot has the reverse polarity, forcing the operator to place the magnet in the magnet slot in the specified direction, thus effectively preventing the problem of the operator installing the magnet with the wrong polarity.

[0018] Secondly, when a magnet is placed in the magnetic slot of the sofa refrigerator, the magnet detection sensor will be triggered and a green light will illuminate; if the magnet detection sensor is not triggered, a red light will illuminate and a buzzer will sound an alarm, indicating that a magnet is missing. This reminds the operator to install the magnet, thus effectively avoiding the problem of missing magnets.

[0019] Thirdly, it can effectively solve the problem of employees incorrectly installing magnets due to the loss of magnetism in the testing magnets. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of a sofa refrigerator magnet missing or incorrect installation detection device according to the present invention.

[0021] Figure 2 This is a schematic diagram of the structure of a sofa refrigerator magnet misinstallation detection device of the present invention in practical application.

[0022] Figure 3This is a partial cross-sectional structural diagram of the demagnetization triggering device of the present invention.

[0023] In the picture: Base 1, contoured surface 1.1, sensor mounting slot 1.2; In-situ sensor 2; Detect magnet 3; Magnet detection sensor 4; Positioning structure 5, limiting block 5.1; Controller 6, red light 6.1, green light 6.2, time relay 6.3; 7. Demagnetization triggering device, 7.1. Magnet mounting slot, 7.2. Magnetic suction component, 7.3. Spring receiving slot, 7.4. Compression spring, 7.5. Pressure sensor; Sofa refrigerator 8, magnetic slot 8.1. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Specific Implementation Example 1, such as Figure 1 , Figure 2 As shown, a sofa refrigerator magnet missing or misinstalled detection device includes a base 1, an in-situ sensor 2, a detection magnet 3, and a magnet detection sensor 4.

[0025] The base 1 is equipped with a positioning structure 5, and the sofa refrigerator 8 is supported on the base 1 and positioned by the positioning structure 5.

[0026] The in-situ sensor 2 is located on the base 1. The in-situ sensor 2 is used to detect the sofa refrigerator 8 supported on the base 1. That is, when the sofa refrigerator 8 is supported on the base 1, the in-situ sensor 2 is triggered.

[0027] The detection magnet 3 is placed on the base 1.

[0028] The magnet detection sensor 4 is mounted on the base 1.

[0029] When the sofa refrigerator 8 is supported on the base 1 and positioned by the positioning structure 5, the opening of the magnet slot 8.1 on the sofa refrigerator 8 faces upward; the detection magnet 3 corresponds to the magnet slot 8.1, and the detection magnet 3 is located below and close to the corresponding magnet slot 8.1; the magnet detection sensor 4 corresponds to the magnet slot 8.1, and the magnet detection sensor 4 is located below the corresponding magnet slot 8.1. The magnet detection sensor 4 is used to detect the magnet placed in the slot of the magnet 3. That is, when a magnet is placed in the magnet slot 8.1 of the sofa refrigerator 8, the magnet detection sensor 4 is triggered.

[0030] The specific use of the sofa refrigerator magnet missing or incorrect installation detection device in this embodiment is as follows. The sofa refrigerator 8, to be assembled with magnets, is manually placed on the base 1, and the sofa refrigerator 8 is positioned by the positioning structure 5. At this time, the opening of the magnet slot 8.1 on the sofa refrigerator 8 faces upward, and the in-place sensor 2 detects that the sofa refrigerator 8 is in place. The detection magnet 3 corresponds to the magnet slot 8.1, and the detection magnet 3 is located below and close to the corresponding magnet slot 8.1. The magnet detection sensor 4 corresponds to the magnet slot 8.1, and the magnet detection sensor 4 is located below the corresponding magnet slot 8.1.

[0031] The operator installs the magnet to be installed into the magnet slot 8.1 of the sofa refrigerator 8 (that is, places the magnet to be installed into the magnet slot 8.1 through the slot opening). At this time, since the base 1 is equipped with a detection magnet 3 of the corresponding direction, if the polarity of the magnet placed in the magnet slot 8.1 of the sofa refrigerator 8 is correct, the magnet in the magnet slot 8.1 and the detection magnet 3 will attract each other, and it is determined that the polarity of the magnet placed in the magnet slot 8.1 of the sofa refrigerator 8 is correct. If the polarity of the magnet placed in the magnet slot 8.1 of the sofa refrigerator 8 is reversed, the magnet in the magnet slot 8.1 and the detection magnet 3 will have opposite magnetic forces, pushing the magnet in the magnet slot 8.1 upwards or pushing the magnet in the magnet slot 8.1 upwards and falling off. This reminds the operator that the polarity of the magnet placed in the magnet slot 8.1 is reversed, forcing the operator to install the magnet in the magnet slot 8.1 with the specified direction, thereby effectively preventing the operator from installing the magnet with the wrong polarity.

[0032] Meanwhile, when a magnet is placed in the magnet slot 8.1 of the sofa refrigerator 8, the magnet detection sensor 4 is triggered; if a magnet is missing from the magnet slot 8.1 of the sofa refrigerator 8, the magnet detection sensor 4 is not triggered. In this way, the operator can be prompted to remove the missing magnet by means of indicator lights, buzzers, etc. For example, if the magnet detection sensor 4 is triggered, a green light will light up; if the magnet detection sensor 4 is not triggered, a red light will light up and the buzzer will sound an alarm. This effectively avoids the problem of missing magnets and effectively manages standardized and quantified on-site operations.

[0033] Specific embodiment two, such as Figure 1 , Figure 2 As shown, a sofa refrigerator magnet misinstallation detection device includes a base 1, an in-situ sensor 2, a detection magnet 3, a magnet detection sensor 4, and a controller 6.

[0034] The base 1 is equipped with a positioning structure 5, and the sofa refrigerator 8 is supported on the base 1 and positioned by the positioning structure 5.

[0035] The presence sensor 2 is disposed on the base 1. The presence sensor 2 is used to detect the sofa refrigerator 8 supported on the base 1, that is, when the sofa refrigerator 8 is supported on the base 1, the presence sensor 2 is triggered. In this embodiment, the presence sensor 2 is disposed in the middle of the base 1.

[0036] The detection magnet 3 is mounted on the base 1. In this embodiment, there are two detection magnets 3, and each detection magnet 3 corresponds one-to-one with a magnet slot 8.1 on the sofa refrigerator 8 (there are two magnet slots 8.1 on the sofa refrigerator 8). Of course, the number of detection magnets 3 can be set to three, four or more as needed.

[0037] A magnet detection sensor 4 is mounted on the base 1. In this embodiment, the magnet detection sensor 4 is a Hall sensor. There are two magnet detection sensors 4, and each magnet detection sensor 4 corresponds one-to-one with the magnet slot 8.1 of the sofa refrigerator 8. Of course, the number of magnet detection sensors 4 can be set to three, four or more as needed.

[0038] When the sofa refrigerator 8 is supported on the base 1 and positioned by the positioning structure 5, the opening of the magnet slot 8.1 on the sofa refrigerator 8 faces upward; the detection magnet 3 corresponds to the magnet slot 8.1, and the detection magnet 3 is located below and close to the corresponding magnet slot 8.1; the magnet detection sensor 4 corresponds to the magnet slot 8.1, and the magnet detection sensor 4 is located below the corresponding magnet slot 8.1. The magnet detection sensor 4 is used to detect the magnet placed in the slot of the magnet 3. That is, when a magnet is placed in the magnet slot 8.1 of the sofa refrigerator 8, the magnet detection sensor 4 is triggered.

[0039] The controller 6 is equipped with a red light 6.1, a green light 6.2, a buzzer, and a time relay 6.3. The magnet detection sensor 4 and the presence sensor 2 are electrically connected to the controller 6, that is, the magnet detection sensor 4 is electrically connected to the controller 6, and the presence sensor 2 is electrically connected to the controller 6.

[0040] The specific use of the sofa refrigerator magnet missing or incorrect installation detection device in this embodiment is as follows. The sofa refrigerator 8, which is to be fitted with magnets, is placed on the base 1 by hand, and the sofa refrigerator 8 is positioned by the positioning structure 5. At this time, the opening of the magnet slot 8.1 on the sofa refrigerator 8 is facing upward. The detection magnet 3 corresponds to the magnet slot 8.1, and the detection magnet 3 is located below and close to the corresponding magnet slot 8.1. The magnet detection sensor 4 corresponds to the magnet slot 8.1, and the magnet detection sensor 4 is located below the corresponding magnet slot 8.1.

[0041] Once the sofa refrigerator 8 to be fitted with magnets is placed on the base 1, the position sensor 2 detects that the sofa refrigerator 8 is in place. The position sensor 2 is triggered, and an electrical signal is sent to the time relay. The time relay starts timing, reminding the employee to start preparing to install the magnets.

[0042] Next, the operator installs the magnet to be installed into the magnet slot 8.1 of the sofa refrigerator 8 (that is, placing the magnet to be installed into the magnet slot 8.1 through the slot opening). At this time, since the base 1 is equipped with a detection magnet 3 of the corresponding direction, if the polarity of the magnet placed in the magnet slot 8.1 of the sofa refrigerator 8 is correct, the magnet in the magnet slot 8.1 and the detection magnet 3 will attract each other, and it is determined that the polarity of the magnet placed in the magnet slot 8.1 of the sofa refrigerator 8 is correct; if the polarity of the magnet placed in the magnet slot 8.1 of the sofa refrigerator 8 is reversed, the magnet in the magnet slot 8.1 and the detection magnet 3 will have opposite magnetic forces, pushing the magnet in the magnet slot 8.1 upwards, or pushing the magnet in the magnet slot 8.1 upwards and falling off. This reminds the operator that the polarity of the magnet placed in the magnet slot 8.1 is reversed, forcing the operator to install the magnet in the magnet slot 8.1 with the specified direction, thereby effectively preventing the operator from installing the magnet with the wrong polarity.

[0043] When a magnet of the correct polarity is placed in the magnet slot 8.1 of the sofa refrigerator 8, the magnet detection sensor 4 is triggered. If a magnet is missing from the magnet slot 8.1, the magnet detection sensor 4 is not triggered. Thus, the operator can be alerted by indicator lights, buzzers, or other means to indicate that a magnet has been missing. For example, when a magnet is placed in the magnet slot 8.1 of the sofa refrigerator 8, the magnet detection sensor 4 is triggered, and a green light illuminates. If a magnet is missing from the magnet slot 8.1, the magnet detection sensor 4 is not triggered, the green light signal cannot be activated, and after 30 seconds, a red light illuminates and a buzzer sounds to alert the operator. When the operator places a magnet of the correct polarity in the magnet slot 8.1, the buzzer sound stops, and the green light illuminates. The green light signal serves as the sole completion signal for the operator, effectively managing standardized and quantifiable on-site operations.

[0044] In this embodiment, the sofa refrigerator 8 is supported on the base 1 and positioned by the positioning structure 5. Specifically... In one embodiment, the positioning structure 5 includes a plurality of limiting blocks 5.1 disposed around the top surface of the base 1. The sofa refrigerator 8 is supported on the top surface of the base 1 and is located between the limiting blocks 5.1. For example, limiting blocks 5.1 are provided in all four directions (front, back, left, and right) of the top surface of the base 1. In this way, the sofa refrigerator 8 supported on the top surface of the base 1 can be positioned by the positioning structure 5, so that the detection magnet 3 corresponds to the magnet slot 8.1 and the magnet detection sensor 4 corresponds to the magnet slot 8.1.

[0045] In another embodiment, the top surface of the base 1 is a contoured surface 1.1, which is adapted to the end face of the sofa refrigerator 8 supported on the base 1. The positioning structure 5 includes several limiting blocks 5.1 disposed around the top surface of the base 1. The sofa refrigerator 8 is supported on the top surface of the base 1 and is located between the limiting blocks 5.1. For example, limiting blocks 5.1 are provided in all four directions of the top surface of the base 1. In this way, when the sofa refrigerator 8 is supported on the base 1, the position of the sofa refrigerator 8 supported on the top surface of the base 1 can be more accurate by the matching of the contoured surface 1.1 with the end face of the sofa refrigerator 8, thereby reducing the false judgment rate. At the same time, the positioning structure 5 positions the sofa refrigerator 8 supported on the top surface of the base 1 so that the detection magnet 3 corresponds to the magnet slot 8.1 and the magnet detection sensor 4 corresponds to the magnet slot 8.1.

[0046] In this embodiment, the base 1 is provided with a sensor mounting slot 1.2 with the opening facing upward, and the base 1 is provided with a magnet mounting slot 7.1 with the opening facing upward. The magnet detection sensor 4 is located in the sensor mounting slot 1.2, and the detection magnet 3 is located in the magnet mounting slot 7.1.

[0047] Specific embodiment three, such as Figure 1 , Figure 2 , Figure 3 As shown, a sofa refrigerator magnet misinstallation detection device includes a base 1, an in-situ sensor 2, a detection magnet 3, a magnet detection sensor 4, a controller 6, and a demagnetization triggering device 7.

[0048] The base 1 is equipped with a positioning structure 5, and the sofa refrigerator 8 is supported on the base 1 and positioned by the positioning structure 5.

[0049] The presence sensor 2 is disposed on the base 1. The presence sensor 2 is used to detect the sofa refrigerator 8 supported on the base 1, that is, when the sofa refrigerator 8 is supported on the base 1, the presence sensor 2 is triggered. In this embodiment, the presence sensor 2 is disposed in the middle of the base 1.

[0050] The detection magnet 3 is mounted on the base 1. In this embodiment, there are two detection magnets 3, and each detection magnet 3 corresponds one-to-one with the magnet slot 8.1 of the sofa refrigerator 8. Of course, the number of detection magnets 3 can be set to three, four or more as needed.

[0051] A magnet detection sensor 4 is mounted on the base 1. In this embodiment, the magnet detection sensor 4 is a Hall sensor. There are two magnet detection sensors 4, and each magnet detection sensor 4 corresponds one-to-one with the magnet slot 8.1 of the sofa refrigerator 8. Of course, the number of magnet detection sensors 4 can be set to three, four or more as needed.

[0052] When the sofa refrigerator 8 is supported on the base 1 and positioned by the positioning structure 5, the opening of the magnet slot 8.1 on the sofa refrigerator 8 faces upward; the detection magnet 3 corresponds to the magnet slot 8.1, and the detection magnet 3 is located below and close to the corresponding magnet slot 8.1; the magnet detection sensor 4 corresponds to the magnet slot 8.1, and the magnet detection sensor 4 is located below the corresponding magnet slot 8.1. The magnet detection sensor 4 is used to detect the magnet placed in the magnet slot 3. That is, when a magnet is placed in the magnet slot 8.1 of the sofa refrigerator 8, the magnet detection sensor 4 is triggered.

[0053] The controller 6 is equipped with a red light, a green light, a buzzer, and a time relay. The magnet detection sensor 4 and the in-situ sensor 2 are electrically connected to the controller 6, that is, the magnet detection sensor 4 and the in-situ sensor 2 are electrically connected to the controller 6.

[0054] The demagnetization triggering device 7 includes a magnet mounting slot 7.1, a spring receiving slot 7.3, a compression spring 7.4, and a magnetic attractor 7.2. The magnet mounting slot 7.1 has its opening facing upwards and is mounted on the base 1. The detection magnet 3 is located within the magnet mounting slot 7.1. The spring receiving slot 7.3 is located on the bottom surface of the magnet mounting slot 7.1. The compression spring 7.4 is located within the spring receiving slot 7.3. The magnetic attractor 7.2 is an iron sheet or block. The magnetic attractor 7.2 is fixed to the bottom surface of the magnet mounting slot 7.1. When the detection magnet 3 is attracted and fixed to the magnetic attractor 7.2, the compression spring 7.4 is compressed, with its upper end abutting against the detection magnet 3 and its lower end abutting against the bottom of the spring receiving slot 7.3. When the magnetic strength of the detection magnet 3 is lower than a set value, the compression spring 7.4 lifts the detection magnet 3 and separates it from the magnet mounting slot 7.1.

[0055] The specific use of the sofa refrigerator magnet missing or incorrect installation detection device in this embodiment is as follows. The sofa refrigerator 8, which is to be fitted with magnets, is placed on the base 1 by hand, and the sofa refrigerator 8 is positioned by the positioning structure 5. At this time, the opening of the magnet slot 8.1 on the sofa refrigerator 8 is facing upward. The detection magnet 3 corresponds to the magnet slot 8.1, and the detection magnet 3 is located below and close to the corresponding magnet slot 8.1. The magnet detection sensor 4 corresponds to the magnet slot 8.1, and the magnet detection sensor 4 is located below the corresponding magnet slot 8.1.

[0056] Once the sofa refrigerator 8 to be fitted with magnets is placed on the base 1, the position sensor 2 detects that the sofa refrigerator 8 is in place. The position sensor 2 is triggered, and an electrical signal is sent to the time relay. The time relay starts timing, reminding the employee to start preparing to install the magnets.

[0057] Next, the operator installs the magnet to be installed into the magnet slot 8.1 of the sofa refrigerator 8 (that is, placing the magnet to be installed into the magnet slot 8.1 through the slot opening). At this time, since the base 1 is equipped with a detection magnet 3 of the corresponding direction, if the polarity of the magnet placed in the magnet slot 8.1 of the sofa refrigerator 8 is correct, the magnet in the magnet slot 8.1 and the detection magnet 3 will attract each other, and it is determined that the polarity of the magnet placed in the magnet slot 8.1 of the sofa refrigerator 8 is correct; if the polarity of the magnet placed in the magnet slot 8.1 of the sofa refrigerator 8 is reversed, the magnet in the magnet slot 8.1 and the detection magnet 3 will have opposite magnetic forces, pushing the magnet in the magnet slot 8.1 upwards, or pushing the magnet in the magnet slot 8.1 upwards and falling off. This reminds the operator that the polarity of the magnet placed in the magnet slot 8.1 is reversed, forcing the operator to install the magnet in the magnet slot 8.1 with the specified direction, thereby effectively preventing the operator from installing the magnet with the wrong polarity.

[0058] When a magnet of the correct polarity is placed in the magnet slot 8.1 of the sofa refrigerator 8, the magnet detection sensor 4 is triggered. If a magnet is missing from the magnet slot 8.1, the magnet detection sensor 4 is not triggered. Thus, the operator can be alerted by indicator lights, buzzers, or other means to indicate that a magnet has been missing. For example, when a magnet is placed in the magnet slot 8.1 of the sofa refrigerator 8, the magnet detection sensor 4 is triggered, and a green light illuminates. If a magnet is missing from the magnet slot 8.1, the magnet detection sensor 4 is not triggered, the green light signal cannot be activated, and after 30 seconds, a red light illuminates and a buzzer sounds to alert the operator. When the operator places a magnet of the correct polarity in the magnet slot 8.1, the buzzer sound stops, and the green light illuminates. The green light signal serves as the sole completion signal for the operator, effectively managing standardized and quantifiable on-site operations.

[0059] On the other hand, during the long-term use of the sofa refrigerator magnet misinstallation detection device, the detection magnet 3 may become demagnetized for various reasons, and this demagnetization is often undetectable by the operator. Once the detection magnet 3 becomes demagnetized, regardless of whether the polarity of the magnet placed in the magnet slot 8.1 of the sofa refrigerator 8 is reversed, the magnet placed in the magnet slot 8.1 will be supported at the bottom of the slot under its own weight, and will be considered to have the correct polarity. This makes it impossible to determine whether the polarity of the magnet placed in the magnet slot 8.1 is reversed, and it cannot prevent employees from misinstalling magnets. To address this issue, this solution incorporates a demagnetization trigger device 7. When the detection magnet 3 is in normal condition, it is magnetically attached to the magnetic suction piece 7.2 on the bottom surface of the magnet mounting slot 7.1, with the upper end of the compression spring 7.4 resting against it. This ensures the normal operation of the sofa / refrigerator magnet misinstallation detection device. However, when the magnetic strength of the detection magnet 3 falls below a set value (including when it becomes demagnetized), the compression spring 7.4 lifts the magnet 3, separating it from the magnet mounting slot 7.1. Subsequently, the detection magnet 3 cannot be properly installed into the slot. This alerts the operator to the malfunction of the detection magnet 3 and forces them to replace it. A new detection magnet 3 is then installed in the magnet mounting slot 7.1, magnetically attached to the magnetic suction piece 7.2, with the upper end of the compression spring 7.4 resting against it. This effectively solves the problem of demagnetization of the detection magnet 3, which prevents the determination of whether the magnet in the magnet slot 8.1 is reversed, thus avoiding the inability to prevent employees from incorrectly installing magnets.

[0060] In this embodiment, the sofa refrigerator 8 is supported on the base 1 and positioned by the positioning structure 5. Specifically... In one embodiment, the positioning structure 5 includes a plurality of limiting blocks 5.1 disposed around the top surface of the base 1. The sofa refrigerator 8 is supported on the top surface of the base 1 and is located between the limiting blocks 5.1. For example, limiting blocks 5.1 are provided in all four directions (front, back, left, and right) of the top surface of the base 1. In this way, the sofa refrigerator 8 supported on the top surface of the base 1 can be positioned by the positioning structure 5, so that the detection magnet 3 corresponds to the magnet slot 8.1 and the magnet detection sensor 4 corresponds to the magnet slot 8.1.

[0061] In another embodiment, the top surface of the base 1 is a contoured surface 1.1, which is adapted to the end face of the sofa refrigerator 8 supported on the base 1. The positioning structure 5 includes several limiting blocks 5.1 disposed around the top surface of the base 1. The sofa refrigerator 8 is supported on the top surface of the base 1 and is located between the limiting blocks 5.1. For example, limiting blocks 5.1 are provided in all four directions of the top surface of the base 1. In this way, when the sofa refrigerator 8 is supported on the base 1, the position of the sofa refrigerator 8 supported on the top surface of the base 1 can be more accurate by the matching of the contoured surface 1.1 with the end face of the sofa refrigerator 8, thereby reducing the false judgment rate. At the same time, the positioning structure 5 positions the sofa refrigerator 8 supported on the top surface of the base 1 so that the detection magnet 3 corresponds to the magnet slot 8.1 and the magnet detection sensor 4 corresponds to the magnet slot 8.1.

[0062] Furthermore, such as Figure 3 As shown, the demagnetization triggering device 7 also includes a pressure sensor 7.5. The pressure sensor 7.5 is electrically connected to the controller 6. The pressure sensor 7.5 is located at the bottom of the spring receiving groove 7.3. The lower end of the compression spring 7.4 rests against the pressure sensor 7.5. Thus, when the detection magnet 3 is in a normal state, the detection magnet 3 is attracted and fixed to the magnetic suction member 7.2 on the bottom surface of the magnet mounting groove 7.1, the upper end of the compression spring 7.4 rests against the detection magnet 3, and the lower end of the compression spring 7.4 rests against the pressure sensor 7.5. The compression spring 7.4 is compressed, and the pressure sensor 7.5 can sense the pressure. When the magnetic strength of the detection magnet 3 is lower than the set value, the compression spring 7.4 lifts the detection magnet 3, and the pressure sensed by the pressure sensor 7.5 drops sharply, thereby issuing a warning to the operator that the detection magnet 3 has malfunctioned. In this embodiment, the pressure sensor 7.5 is electrically connected to the controller.

[0063] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Any simple modifications, alterations, and equivalent transformations made to the above embodiments based on the technical essence of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A device for detecting missing or incorrectly installed magnets in sofas and refrigerators, characterized in that, include: The base has a positioning structure, and the sofa refrigerator is supported on the base and positioned by the positioning structure. In-situ sensor, mounted on the base; The detection magnet is mounted on the base. A magnet detection sensor is mounted on the base; When the sofa refrigerator is supported on the base and positioned by the positioning structure, the opening of the magnetic slot on the sofa refrigerator faces upward, the detection magnet corresponds to the magnetic slot, and the detection magnet is located below the corresponding magnetic slot and close to the magnetic slot. The magnet detection sensor corresponds to the magnet slot, and the magnet detection sensor is located below the corresponding magnet slot.

2. The sofa refrigerator magnet misassembly detection device according to claim 1, characterized in that, The positioning structure includes several limiting blocks around the top surface of the base. The sofa refrigerator is supported on the top surface of the base and is located between the limiting blocks.

3. The sofa refrigerator magnet misassembly detection device according to claim 2, characterized in that, The top surface of the base is a contoured surface that matches the end face of the sofa refrigerator supported on the base.

4. A sofa / refrigerator magnet misassembly detection device according to claim 1, 2, or 3, characterized in that, It also includes a demagnetization triggering device, which comprises: An upward-facing magnet mounting slot is provided on the base, and the detection magnet is placed inside the magnet mounting slot; A spring receiving groove is provided on the bottom surface of the magnet mounting groove; A compression spring is provided in a spring receiving groove; A magnetic suction component is fixed to the bottom surface of the magnet mounting slot, the detection magnet is attracted and fixed to the magnetic suction component, and the upper end of the compression spring abuts against the detection magnet; When the magnetic strength of the detection magnet is lower than the set value, the compression spring will lift the detection magnet and separate it from the magnet mounting slot.

5. A sofa refrigerator magnet misassembly detection device according to claim 4, characterized in that, The demagnetization triggering device also includes a pressure sensor, which is located at the bottom of the spring receiving groove, and the lower end of the compression spring rests against the pressure sensor.

6. A sofa refrigerator magnet misassembly detection device according to claim 1, 2, or 3, characterized in that, It also includes a controller, which is equipped with a red light, a green light, a buzzer and a time relay. The magnet detection sensor and the in-situ sensor are electrically connected to the controller.

7. A sofa / refrigerator magnet misassembly detection device according to claim 1, 2, or 3, characterized in that, The base is provided with an upward-facing sensor mounting slot and a magnet mounting slot. The magnet detection sensor is located in the sensor mounting slot, and the detection magnet is located in the magnet mounting slot.

8. A sofa / refrigerator magnet misassembly detection device according to claim 1, 2, or 3, characterized in that, There are two detection magnets, and each detection magnet corresponds to a magnet slot in the sofa refrigerator.

9. A sofa / refrigerator magnet misassembly detection device according to claim 1, 2, or 3, characterized in that, The magnet detection sensor is a Hall sensor.

10. A sofa refrigerator magnet misassembly detection device according to claim 1, 2, or 3, characterized in that, There are two magnet detection sensors, and each magnet detection sensor corresponds to a magnet slot in the sofa refrigerator.

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