Manufacturing process of a sensor for an oven-built-in pot and the sensor for the oven-built-in pot

Abstract

The present application relates to a manufacturing process of a sensor for an oven-built-in pot and the sensor for the built-in pot, which comprises the following steps: fixedly connecting the pins of a temperature sensing element to a connecting wire; passing the temperature sensing element through a monitoring tube and fixing it in a monitoring cap, and thread-connecting the external thread of the monitoring cap to the monitoring tube after using an adhesive; injecting potting glue into the monitoring tube; passing the spring through the connecting wire and sleeving it on the monitoring tube, with one end of the spring abutting against a ring-shaped protrusion provided on the outer wall of the monitoring tube; installing the monitoring tube in a protective shell, wherein one end of the monitoring cap in the monitoring tube penetrates out of the protective shell; passing the other end of the connecting wire through a positioning tube and a connecting tube to be connected to a plug, and sleeving the positioning tube on the monitoring tube, with one end face of the positioning tube abutting against the spring; connecting the connecting tube to the protective shell, and finally injecting potting glue into the connecting tube; fixing the opening of the protective shell with a rear cover. The present application has the effect of being able to monitor the temperature in the built-in pot in real time.

Description

Technical Field

[0001] This application relates to the field of electronic component design, and particularly to a manufacturing process for a sensor for an oven-built-in pot and the oven-built-in pot sensor. Background Art

[0002] An oven is a device that forms hot air to bake and cook food, generally in a closed or semi-closed structure. An oven is also called a baking oven, an oven, or a roasting oven, and generally has an automatic constant temperature system.

[0003] Currently, in order to cook food and bake it with uniform temperature, generally an oven is equipped with a built-in pot to meet user needs. The user puts the built-in pot containing food into the oven for baking, so as to heat the soup in the built-in pot. However, since the built-in pot is placed inside the oven, the temperature inside the built-in pot is not equal to the baking temperature of the oven, and it is difficult to monitor the temperature inside the built-in pot, making it difficult for the oven to control the temperature inside the built-in pot to meet the required temperature by controlling its own temperature; moreover, the existing sensors are easily affected by the high-temperature environment outside the built-in pot and are difficult to work for a long time in a high-temperature environment, and this situation needs to be improved. Summary of the Invention

[0004] In order to improve the problem that it is difficult to monitor the temperature in the built-in pot of an oven, this application provides a manufacturing process for a sensor for an oven-built-in pot and the oven-built-in pot sensor.

[0005] In a first aspect, this application provides a manufacturing process for a sensor for an oven-built-in pot, adopting the following technical solution:

[0006] A manufacturing process for a sensor for an oven-built-in pot includes the following steps:

[0007] Prepare a temperature sensing element and a connecting wire;

[0008] Fix the pins of the temperature sensing element to the connecting wire;

[0009] Pass the temperature sensing element through a monitoring tube and fix it in a monitoring cap, and threadedly connect the external thread of the monitoring cap to the monitoring tube after using an adhesive;

[0010] Inject potting glue into the monitoring tube;

[0011] Pass a spring through the connecting wire and sleeved on the monitoring tube, with one end of the spring abutting against a ring-shaped protrusion provided on the outer wall of the monitoring tube; install the monitoring tube in a protective shell, and one end of the monitoring cap in the monitoring tube passes through the protective shell;

[0012] Pass the end of the connecting wire away from the temperature sensing element through a positioning tube, and the positioning tube is sleeved on the monitoring tube, and one end face of the positioning tube abuts against the spring;

[0013] Pass the connecting wire through the connecting pipe and connect it to the plug. Then connect the connecting pipe to the protective shell. Finally, inject potting glue into the connecting pipe.

[0014] Fix the opening of the protective shell with the rear cover.

[0015] By adopting the above technical solution, first prepare the temperature sensing element and the connecting wire, and connect the pins of the temperature sensing element to the connecting wire. Then pass the connected temperature sensing element through the monitoring pipe and fix it in the monitoring cap, so that when the monitoring cap abuts against the built-in pot, the temperature sensing element can monitor the temperature inside the pot. After the monitoring cap is fixedly connected to the monitoring pipe, inject glue to make the connection of the temperature sensing element in the monitoring pipe more stable. Then put the monitoring pipe on the spring and the positioning pipe and install it in the protective shell, so that the monitoring pipe can expand and contract under the action of the spring, which is convenient for the sensor of the built-in pot of the oven to abut against the bottom wall of the installation groove when installed in the corresponding installation groove of the built-in pot. Finally, after fixedly connecting the connecting pipe to the protective shell, inject potting glue into the connecting pipe and fix the rear cover at the opening of the protective shell, thus obtaining the sensor for the built-in pot of the oven, so that the sensor for the built-in pot of the oven can monitor the temperature inside the built-in pot in the oven in real time.

[0016] Optionally, during the process of fixedly connecting the pins of the temperature sensing element to the connecting wire, sleeved the first pin of the temperature sensing element with the first sleeve. Then sleeved the second sleeve on the first sleeve, where the length of the second sleeve is less than that of the first sleeve.

[0017] Strip one end of the connecting wire, fixedly connect the wire core to the first pin of the temperature sensing element, and sleeve the connection point with the second sleeve.

[0018] Fix the second pin of the temperature sensing element to the outer sheath of the connecting wire.

[0019] By adopting the above technical solution, sleeved the first sleeve on the first pin, and sleeved the second sleeve on the first sleeve. The second sleeve sleeves the connection point to isolate the connection point from the outside world, and the first sleeve sleeves the first pin to isolate the first pin from the outside world, so that the second pin is not easy to contact the first pin, ensuring the safety and reliability of the electrical performance.

[0020] Optionally, during the process of stripping one end of the connecting wire and then fixedly connecting the wire core to the first pin of the temperature sensing element, strip the outer sheath at one end of the connecting wire to form a stripping area, and then strip the end of the stripping area away from the outer sheath to expose the wire core.

[0021] Connect the wire core to the first pin of the temperature sensing element by butt welding, where the included angle between the wire core and the first pin is an acute angle.

[0022] Bend the first pin so that the first pin is parallel to the connecting wire, and then slide the second sleeve so that the second sleeve covers the solder joint, the wire stripping area, and part of the first sleeve, and the end face of the second sleeve away from the first pin abuts against the outer sheath of the connecting wire.

[0023] By adopting the above technical solution, first strip the outer sheath of the connecting wire to form a wire stripping area, and then partially strip one end of the wire stripping area away from the outer sheath to expose the wire core, so that the second sleeve can stably cover the wire stripping area; the wire core and the first pin are connected by butt welding when the included angle is acute, and the second sleeve covers the solder joint, the wire stripping area, and part of the first sleeve, making it difficult for the temperature sensing element to short-circuit.

[0024] Optionally, during the process of fixedly connecting the second pin of the temperature sensing element to the outer sheath of the connecting wire, wind the second pin around the first sleeve and the second sleeve onto the outer sheath of the connecting wire, where the turns of the second pin are flush; then solder the second pin wound on the outer sheath of the connecting wire for fixation.

[0025] By adopting the above technical solution, winding the second pin around the first sleeve and the second sleeve onto the outer sheath of the connecting wire with flush turns makes effective use of the length of the second pin without trimming, making it difficult for the second pin to shake. Finally, solder is used to fix the second pin on the outer sheath of the connecting wire, improving the structural stability of the sensor for the built-in pot of the oven.

[0026] Optionally, during the process of sleeving the positioning tube on the monitoring tube, the connecting wire is led out from the positioning hole on the positioning tube, then the connecting wire passes through the mounting hole on the protective shell, and then the positioning tube is installed in the protective shell; after installation, the positioning hole and the mounting hole are coaxial.

[0027] By adopting the above technical solution, the connecting wire is led out from the positioning hole on the positioning tube and passes through the mounting hole of the protective shell to the outside, facilitating the installation of the positioning tube in the protective shell; the positioning hole and the mounting hole are coaxial, making the connecting wire pass through regularly.

[0028] Optionally, after installing the positioning tube in the protective shell, use tweezers to twist the connecting wire located in the positioning tube so that the connecting wire in the positioning tube is in a relaxed state.

[0029] By adopting the above technical solution, the connecting wire in the positioning tube is in a relaxed state after being twisted by tweezers, ensuring that the monitoring tube can normally expand and contract through the spring and is not easily affected by the length of the connecting wire.

[0030] Optionally, during the process of connecting the connecting tube to the protective shell, apply an adhesive to the external thread of the connecting tube and thread it onto the protective shell; inject potting glue through the glue injection hole of the connecting tube and at the outlet where the connecting wire passes through the connecting tube.

[0031] By adopting the above technical solution, after the connecting pipe and the protective shell are connected by using an adhesive, there is no gap between them. Through the glue injection hole, the connecting pipe can be quickly filled with glue, so that the connecting wire is fixed in the connecting pipe; finally, glue is injected at the outlet where the connecting wire passes through the connecting pipe to ensure the sealing performance.

[0032] Optionally, after the opening of the protective shell is fixed by using a rear cover, the protective shell and the connecting pipe are injection-molded to form a protective sleeve.

[0033] By adopting the above technical solution, the formation of the protective sleeve enhances the structural stability of the product and avoids the situation of getting burned when directly contacting the protective shell of the sensor for the built-in pot of the oven after use.

[0034] In a second aspect, the present application provides a sensor for a built-in pot of an oven, adopting the following technical solution:

[0035] A sensor for a built-in pot of an oven, which is applied to the manufacturing process of the sensor for a built-in pot of an oven as described above, includes a temperature sensing element, a connecting wire, a monitoring tube, a monitoring cap, a positioning tube, a connecting pipe and a protective shell with a single-end opening. The temperature sensing element is fixed in the monitoring cap, and the pins of the temperature sensing element are connected to the connecting wire; a ring-shaped convex block is provided on the outer wall circumference of the monitoring tube, the monitoring cap is fixed at one end of the monitoring tube, a monitoring hole for the monitoring tube to pass through is opened on the bottom wall of the protective shell, the monitoring tube is installed in the protective shell, and one end of the monitoring cap in the monitoring tube passes through the monitoring hole; the ring-shaped convex block abuts against the bottom wall of the protective shell;

[0036] The positioning tube is sleeved on the monitoring tube, a spring is sleeved on the monitoring tube, one end of the spring abuts against the ring-shaped convex block, and the other end abuts against the end face of the positioning tube; a limiting convex block is provided on the outer wall of the positioning tube near one end of the spring, and a ring-shaped groove for abutting and cooperating with the limiting convex block is opened on the inner wall of the protective shell; the connecting pipe is fixedly connected to the protective shell, the connecting wire passes through the connecting pipe and is connected with a plug for connecting to an external socket; a rear cover is provided at the rear end of the protective shell.

[0037] By adopting the above technical solution, the setting of the ring-shaped convex block makes it difficult for the monitoring tube to pass through the protective shell. The cooperation of the limiting convex block and the ring-shaped groove enables the positioning tube to be stably installed in the protective shell. The spring enables the monitoring tube to expand and contract, which is convenient for installing the sensor for the built-in pot of the oven on the built-in pot and makes the monitoring more accurate.

[0038] Optionally, a positioning hole is provided on the side wall of the positioning tube, an installation hole is provided on the side wall of the protective shell, the connecting wire is led out from the positioning hole and passes through the installation hole; the external thread of the connecting pipe is threadedly connected to the internal thread of the installation hole; a glue injection hole is provided on the side wall of the connecting pipe.

[0039] By adopting the above technical solution, glue is injected into the connecting pipe through the glue injection hole, so that the connecting wire is fixed in the connecting pipe; the arrangement of the positioning hole and the mounting hole enables the connecting wire to pass through the side wall of the protective shell, thereby reducing the length of the sensor for the built-in pot of the oven, reducing the occupied space of the sensor, and enhancing the application range.

[0040] In summary, the present application includes at least one of the following beneficial technical effects:

[0041] 1. First, prepare the temperature sensing element and the connecting wire, and connect the pins of the temperature sensing element to the connecting wire; then pass the connected temperature sensing element through the monitoring tube and fix it in the monitoring cap, so that the temperature sensing element can monitor the temperature inside the pot when the monitoring cap abuts against the built-in pot; after the monitoring cap is fixedly connected to the monitoring tube, glue is injected to make the connection of the temperature sensing element in the monitoring tube more stable; then the monitoring tube is sleeved with a spring and a positioning tube and installed in the protective shell, so that the monitoring tube can expand and contract under the action of the spring, which is convenient for the sensor for the built-in pot of the oven to abut against the bottom wall of the installation groove when installed in the corresponding installation groove of the built-in pot; finally, after the connecting pipe is fixedly connected to the protective shell, potting glue is injected into the connecting pipe, and the opening of the protective shell is fixed with a rear cover, thereby obtaining the sensor for the built-in pot of the oven, enabling the sensor for the built-in pot of the oven to monitor the temperature inside the built-in pot in real time in the oven;

[0042] 2. By sleeving a first sleeve on the first pin, and sleeving a second sleeve on the first sleeve, the second sleeve covers the connection point to isolate the connection point from the outside, and the first sleeve covers the first pin to isolate the first pin from the outside, making it difficult for the second pin to contact the first pin, ensuring the safety and reliability of the electrical performance;

[0043] 3. By using tweezers to twist the connecting wire in the positioning tube to a relaxed state, it is ensured that the monitoring tube can expand and contract normally through the spring and is not easily affected by the length of the connecting wire. Description of the Drawings

[0044] Figure 1 is a flowchart of the manufacturing process of the sensor for the built-in pot of the oven in the present application;

[0045] Figure 2 is a schematic diagram of the overall structure of the sensor for the built-in pot of the oven in the present application;

[0046] Figure 3 is a cross-sectional view of the sensor for the built-in pot of the oven in the present application after hiding the protective sleeve;

[0047] Figure 4 is an exploded schematic diagram of the structure of the sensor for the built-in pot of the oven in the present application after hiding the temperature sensing element and the connecting wire;

[0048] Figure 5It is a schematic structural diagram of the temperature sensing element in the sensor for the built-in pot of the oven in this application being arranged in the monitoring tube.

[0049] Explanation of reference numerals: 1, temperature sensing element; 11, first pin; 12, second pin; 13, first sleeve; 14, second sleeve; 2, connecting wire; 21, wire core; 22, wire stripping area; 3, monitoring tube; 31, annular bump; 32, spring; 4, monitoring cap; 5, positioning tube; 51, positioning hole; 52, limiting bump; 6, protective shell; 61, monitoring hole; 62, annular groove; 63, mounting hole; 7, rear cover; 8, connecting tube; 81, glue injection hole; 9, protective sleeve. Detailed implementation manners

[0050] The following will further elaborate on this application with reference to Figures 1-5 Make a further detailed description of this application.

[0051] The embodiment of this application discloses a manufacturing process of a sensor for the built-in pot of an oven.

[0052] Refer to Figure 1 , including the following steps:

[0053] S1. Material preparation: Prepare the temperature sensing element 1 and the connecting wire 2;

[0054] In the embodiment of this application, the temperature sensing element 1 is a single-ended glass-sealed resistor, and the connecting wire 2 is a steel mesh wire.

[0055] S2. Wiring: Fix the pins of the temperature sensing element 1 to the connecting wire 2;

[0056] Specifically, in the embodiment of this application, the first pin 11 of the temperature sensing element 1 is sleeved with the first sleeve 13; then the second sleeve 14 is sleeved on the first sleeve 13, where the length of the second sleeve 14 is less than that of the first sleeve 13. The length of the first sleeve 13 is 30 mm, and the length of the second sleeve 14 is 16 mm; the first sleeve 13 and the second sleeve 14 play an insulating role.

[0057] Trim the first pin 11. After trimming, the length of the first pin 11 passing through the first sleeve 13 is 5 mm, so as to fixedly connect the first pin 11 with the wire core 21 of the connecting wire 2 subsequently.

[0058] Strip one end of the connecting wire 2, strip the steel mesh outer sheath of the connecting wire 2 to form a wire stripping area 22 of 9 mm, and then strip the mica wrapping at the end of the wire stripping area 22 away from the outer sheath to expose the wire core 21, where the wire core 21 is 5 mm long; the diameter of the un-stripped mica wrapping is equivalent to the pipe diameter of the second sleeve 14. Therefore, it provides a support section for the second sleeve 14 to sleeve the wire stripping area 22 subsequently, making the second sleeve 14 more stably sleeve the wire stripping area 22.

[0059] The wire core 21 is connected to the first pin 11 of the temperature sensing element 1 by butt welding, wherein the angle between the wire core 21 and the first pin 11 is an acute angle; when the angle is an acute angle, it is convenient to butt weld the wire core 21 to the first pin 11 of the temperature sensing element 1, so that the connection is more stable. Accordingly, the angle between the wire core 21 and the first pin 11 is required to be as small as possible.

[0060] After welding, bend the first pin 11 so that the first pin 11 is parallel to the connecting wire 2, and then slide the second sleeve 14 so that the second sleeve 14 covers the soldering point, the wire stripping area 22 and part of the first sleeve 13, and the end surface of the second sleeve 14 away from the first pin 11 abuts against the outer sheath of the connecting wire 2, and the second sleeve 14 covers the wire core 21 to prevent short circuit; one end of the first sleeve 13 is always abutted against the resistor head, so that the second pin 12 is not easy to contact the first pin 11 to cause a short circuit.

[0061] The second pin 12 is wound around the outer layer of the connecting wire 2 along the first sleeve 13 and the second sleeve 14, wherein the windings of the second pin 12 are flush, cannot overlap, and are wound around the outer layer of the connecting wire 2, specifically, five turns in this embodiment. Then, the second pin 12 wound around the outer layer is covered with 350-degree high-temperature tin with a soldering iron to prevent the second pin 12 from falling off, and the tinned part is required to be as small as possible, so that the second pin 12 of the temperature sensing element 1 is fixedly connected to the outer layer of the connecting wire 2, thereby improving the structural stability of the sensor for the built-in pot of the oven.

[0062] S3, inserting the monitoring tube: passing the temperature sensing element 1 through the monitoring tube 3 and fixing it in the monitoring cap 4, and threading the external thread of the monitoring cap 4 to the monitoring tube 3 with an adhesive;

[0063] In this embodiment, the monitoring tube 3 is a PEEK tube, and the monitoring cap 4 is made of aluminum material; first, the temperature sensing element 1 is passed through the monitoring tube 3, and then glue is applied to the monitoring cap 4 to bond the resistor head of the temperature sensing element 1 to the monitoring cap 4; after the glue is dry, an adhesive is applied to the external thread of the monitoring cap 4, wherein the adhesive is Kesmi glue, and then the monitoring cap 4 is threadedly connected to the monitoring tube 3. During the threaded connection process, the glue cannot overflow, and the monitoring cap 4 is completely flush with the monitoring tube 3, so that there is no gap after the monitoring cap 4 is connected to the monitoring tube 3. After the tube is inserted, the first sleeve 13, the second sleeve 14 and the stripping area 22 of the connecting wire 2 are all located in the monitoring tube 3.

[0064] S4, glue pouring: injecting the potting glue into the monitoring tube 3;

[0065] In this embodiment, the potting adhesive can be glue. After the monitoring cap 4 is fixed to one end of the monitoring tube 3, glue is poured into the other end of the monitoring tube 3, and the glue must not overflow during the operation. After the glue dries, the connecting wire 2 is located at the center position of the monitoring tube 3. Injecting the potting adhesive makes the temperature sensing element 1, the first sleeve 13, the second sleeve 14, and part of the connecting wire 2 more stably fixed in the monitoring tube 3, enhancing the stability performance of the sensor for the built-in pot of the oven, so that the sensor can work stably in a high-temperature environment.

[0066] S5. Install the protective shell: Pass the spring 32 through the connecting wire 2 and sleeved on the monitoring tube 3, and one end of the spring 32 abuts against the annular convex block 31 on the outer wall of the monitoring tube 3; Install the monitoring tube 3 in the protective shell 6, and one end of the monitoring cap 4 in the monitoring tube 3 passes through the protective shell 6;

[0067] In this embodiment, the protective shell 6 is a stainless steel shell. One end of the protective shell 6 is open, and a monitoring hole 61 for the monitoring cap 4 in the monitoring tube 3 to pass through is opened on the bottom wall of the protective shell 6, which is convenient for the monitoring cap 4 to contact the built-in pot, so as to monitor the temperature in the built-in pot; The monitoring tube 3 is installed in the protective shell 6, and the end face of the annular convex block 31 provided around the outer wall of the monitoring tube 3 away from the spring 32 abuts against the bottom wall of the protective shell 6, thereby restricting the monitoring tube 3 in the protective shell 6.

[0068] S6. Pass the positioning tube: Pass the end of the connecting wire 2 away from the temperature sensing element 1 through the positioning tube 5, and the positioning tube 5 is sleeved on the monitoring tube 3, and one end face of the positioning tube 5 abuts against the spring 32;

[0069] In this embodiment, the positioning tube 5 is a PEEK tube, and a positioning hole 51 is opened on the side of the positioning tube 5 away from the spring 32, and the positioning hole 51 is a U-shaped hole; An installation hole 63 is opened on the side of the protective shell 6 close to the opening. During the process of sleeving the positioning tube 5 on the monitoring tube 3, the connecting wire 2 is led out from the positioning hole 51 on the positioning tube 5, then the connecting wire 2 passes through the installation hole 63 on the protective shell 6, and then while sleeving the positioning tube 5 on the monitoring tube 3, the connecting wire 2 led out from the installation hole 63 is tightened, so as to quickly install the positioning tube 5 into the protective shell 6. After the installation is completed, the positioning hole 51 and the installation hole 63 are coaxial.

[0070] After installing the positioning tube 5 on the protective shell 6, use tweezers to twist the connecting wire 2 located in the positioning tube 5, and twist the connecting wire 2 one turn to make the connecting wire 2 in the positioning tube 5 in a relaxed state.

[0071] S7. Pass the connecting tube: Pass the connecting wire 2 through the connecting tube 8 and connect it to the plug, then connect the connecting tube 8 to the protective shell 6, and finally inject potting adhesive into the connecting tube 8;

[0072] In this embodiment, the plug fixedly connected to the connecting wire 2 can be inserted into the corresponding socket in the oven. During the process of connecting the connecting pipe 8 to the protective housing 6, first apply an adhesive with a thin needle on the external thread of the connecting pipe 8 and thread it into the internal thread of the mounting hole 63 in the protective housing 6, so that there is no gap after the connecting pipe 8 is connected to the protective housing 6. The adhesive can be Kelsi glue.

[0073] Inject potting glue through the glue injection hole 81 of the connecting pipe 8 and at the outlet where the connecting wire 2 passes through the connecting pipe 8. Specifically, the glue injection hole 81 is opened on the side wall of the connecting pipe 8. In this embodiment, the glue injection hole 81 is elongated and parallel to the length direction of the connecting pipe 8. Through the glue injection hole 81, the connecting pipe 8 can be quickly filled with glue to fix the connecting wire 2 in the connecting pipe 8; finally, glue is injected at the outlet where the connecting wire 2 passes through the connecting pipe 8 to ensure the sealing performance.

[0074] S8. Fix the rear cover: Fix the opening of the protective housing 6 with the rear cover 7.

[0075] In this embodiment, the rear cover 7 is a metal sheet. The rear cover 7 is welded to the opening of the protective housing 6 to cover the opening of the protective housing 6.

[0076] After welding the rear cover 7, press the monitoring pipe 3 passing through the protective housing 6 three to five times to test and confirm whether there is elasticity. If there is no elasticity or it does not rebound after pressing, it is unqualified.

[0077] After welding the rear cover 7, use a thermoplastic material to injection-mold the protective housing 6 and the connecting pipe 8 to form a protective sleeve 9. The protective sleeve 9 enhances the structural stability of the product. The protective sleeve 9 has fast heat dissipation and can avoid the situation of getting burned when directly contacting the protective housing 6 of the sensor for the built-in pot of the oven after use. The injection molding temperature range is 370 degrees to 400 degrees, the molding pressure is 60 mpa, and the molding time is 6 seconds. The upper limit of the working temperature of the sensor for the built-in pot of the oven is 300 degrees.

[0078] During operation, first connect the plug of the connecting wire 2 of the sensor for the built-in pot of the oven to the socket provided inside the oven, and then embed the front end of the sensor for the built-in pot of the oven, that is, the end where the monitoring pipe 3 passes through, into the installation groove on the outer wall of the built-in pot. The monitoring cap 4 abuts against the bottom wall of the installation groove, so as to monitor the temperature in the built-in pot in real time and make the temperature of the food in the built-in pot reach the required level.

[0079] The implementation principle of the manufacturing process of the sensor for the oven-built pot in this application embodiment is as follows: First, prepare the temperature sensing element 1 and the connecting wire 2. The first pin 11 of the temperature sensing element 1 is successively sleeved with the first sleeve 13 and the second sleeve 14 and then butt-welded to the wire core 21 of the connecting wire 2. The second pin 12 is fixed on the connecting wire 2 through winding and tinning. Then, the connected temperature sensing element 1 is passed through the monitoring tube 3 and fixed in the monitoring cap 4, so that when the monitoring cap 4 abuts against the built-in pot, the temperature sensing element 1 can monitor the temperature inside the pot. After the monitoring cap 4 is fixedly connected to the monitoring tube 3, glue is injected to make the connection of the temperature sensing element 1 in the monitoring tube 3 more stable. Then, the monitoring tube 3 is sleeved with a spring 32 and a positioning tube 5 and then installed in the protective shell 6, so that the monitoring tube 3 can expand and contract under the action of the spring 32, facilitating the sensor for the oven-built pot to abut against the bottom wall of the installation groove when installed in the corresponding installation groove of the built-in pot. Finally, after the connecting tube 8 is fixedly connected to the protective shell 6, potting glue is injected into the connecting tube 8, and the rear cover 7 is fixed at the opening of the protective shell 6, thereby obtaining the sensor for the oven-built pot, enabling the sensor for the oven-built pot to monitor the temperature inside the built-in pot in the oven in real time.

[0080] This application embodiment also discloses a sensor for an oven-built pot, which is applied to the manufacturing process of the sensor for the oven-built pot as described above.

[0081] Referring to Figure 2 and Figure 3 The sensor for the oven-built pot includes a temperature sensing element 1, a connecting wire 2, a monitoring tube 3, a monitoring cap 4, a positioning tube 5, a connecting tube 8, and a protective shell 6 with a single-end opening. The temperature sensing element 1 is fixed in the monitoring cap 4, and the pins of the temperature sensing element 1 are connected to the connecting wire 2. A ring-shaped convex block 31 is provided on the outer wall circumference of the monitoring tube 3. The monitoring cap 4 is fixed at one end of the monitoring tube 3. A monitoring hole 61 for the monitoring tube 3 to pass through is opened on the bottom wall of the protective shell 6. The monitoring tube 3 is installed in the protective shell 6, and one end of the monitoring cap 4 in the monitoring tube 3 passes through the monitoring hole 61. The ring-shaped convex block 31 abuts against the bottom wall of the protective shell 6.

[0082] Referring to Figure 3 and Figure 4 The positioning tube 5 is sleeved on the monitoring tube 3. A spring 32 is sleeved on the monitoring tube 3. One end of the spring 32 abuts against the ring-shaped convex block 31, and the other end abuts against the end face of the positioning tube 5. A limiting convex block 52 is provided on the outer wall of the positioning tube 5 near one end of the spring 32. A ring-shaped groove 62 that abuts and cooperates with the limiting convex block 52 is opened on the inner wall of the protective shell 6. The connecting tube 8 is fixedly connected to the protective shell 6. The connecting wire 2 passes through the connecting tube 8 and is connected with a plug (not shown in the figure) for connecting to an external socket. A rear cover 7 is provided at the rear end of the protective shell 6.

[0083] Referring to Figure 3 and Figure 5, specifically, the pins of the temperature sensing element 1 are respectively a first pin 11 and a second pin 12. A first sleeve 13 is sleeved on the first pin 11, and a second sleeve 14 is sleeved on the first sleeve 13. The first pin 11 is connected to the wire core 21 of the stripped area 22 of the connecting wire 2 by spot welding. The first sleeve 13 sleeves the first pin 11, and the second sleeve 14 sleeves the solder joint, the stripped area 22 and a part of the first sleeve 13. The second pin 12 is fixed on the connecting wire 2 after being wound, so that the first pin 11 is not likely to contact the second pin 12 to cause a short circuit phenomenon.

[0084] Referring to Figure 3 and Figure 4 , a positioning hole 51 is provided on the side wall of the positioning tube 5, and a mounting hole 63 is provided on the side wall of the protective shell 6. The connecting wire 2 is led out from the positioning hole 51 and passes through the mounting hole 63; the external thread of the connecting tube 8 is threadedly connected to the internal thread of the mounting hole 63; a glue injection hole 81 is provided on the side wall of the connecting tube 8. Specifically, in this embodiment, the positioning hole 51 is opened on the side of the positioning tube 5 away from the spring 32, and the positioning hole 51 is a U-shaped hole, which is convenient for the connecting wire 2 to be bent and led out from the positioning tube 5; the positioning hole 51 and the mounting hole 63 are coaxially arranged, so that the connecting wire 2 can pass through the positioning tube 5 and the protective shell 6 regularly and orderly.

[0085] The implementation principle of the sensor for the built-in pot of the oven in the embodiment of the present application is as follows: The first pin 11 of the temperature sensing element 1 is sleeved with a first sleeve 13 and a second sleeve 14 in sequence and then connected to the wire core 21 of the connecting wire 2 by spot welding. The second pin 12 is wound and fixed on the connecting wire 2 with tin; the connected temperature sensing element 1 is passed through the monitoring tube 3 and fixed in the monitoring cap 4. After the monitoring cap 4 is fixedly connected to the monitoring tube 3, glue is injected to make the connection of the temperature sensing element 1 more stable and not easily affected by the external high-temperature working environment; then the monitoring tube 3 is sleeved with a spring 32 and a positioning tube 5 and installed in the protective shell 6. The annular convex block 31 makes the monitoring tube 3 not easily break away from the protective shell 6, so that the monitoring tube 3 can freely expand and contract under the action of the spring 32, which is convenient for the sensor for the built-in pot of the oven to be abutted against the bottom wall of the installation groove when installed in the corresponding installation groove of the built-in pot. The limiting convex block 52 and the limiting groove cooperate to limit the movement of the positioning tube 5 towards the bottom wall of the protective shell 6; after the connecting tube 8 is fixedly connected to the protective shell 6, potting glue is injected into the connecting tube 8 to fix the rear cover 7 at the opening of the protective shell 6; finally, the protective shell 6 and the connecting tube 8 are injection molded to form a protective sleeve 9, thereby obtaining the sensor for the built-in pot of the oven, so that the sensor for the built-in pot of the oven can monitor the temperature in the built-in pot in real time in the oven.

[0086] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A manufacturing process for a sensor for an oven - built - in pot, characterized in that, it includes the following steps: Prepare a temperature sensing element (1) and a connecting wire (2); Fix the pins of the temperature sensing element (1) to the connecting wire (2); Pass the temperature sensing element (1) through a monitoring tube (3) and fix it inside a monitoring cap (4), and thread - connect the external thread of the monitoring cap (4) to the monitoring tube (3) after using an adhesive; Inject potting glue into the monitoring tube (3); Pass a spring (32) through the connecting wire (2) and sleuth it on the monitoring tube (3), with one end of the spring (32) abutted against a ring - shaped protrusion (31) provided on the outer wall circumference of the monitoring tube (3); Install the monitoring tube (3) inside a protective housing (6), with one end of the monitoring cap (4) in the monitoring tube (3) passing through the protective housing (6); Pass the end of the connecting wire (2) far from the temperature sensing element (1) through a positioning tube (5), and the positioning tube (5) is sleeved on the monitoring tube (3), with one end face of the positioning tube (5) abutted against the spring (32); Pass the connecting wire (2) through a connecting tube (8) to connect to a plug, then connect the connecting tube (8) to the protective housing (6), and finally inject potting glue into the connecting tube (8); Fix the opening of the protective housing (6) with a rear cover (7); During the process of fixedly connecting the pins of the temperature sensing element (1) to the connecting wire (2), sleeve a first sleeve (13) on the first pin (11) of the temperature sensing element (1); Then sleeve a second sleeve (14) on the first sleeve (13), where the length of the second sleeve (14) is less than the length of the first sleeve (13); Strip one end of the connecting wire (2), fixedly connect the wire core (21) to the first pin (11) of the temperature sensing element (1), and sleeve the connection point with the second sleeve (14); Fix the second pin (12) of the temperature sensing element (1) to the outer sheath of the connecting wire (2).

2. The manufacturing process for a sensor for an oven - built - in pot according to claim 1, characterized in that, During the process of stripping one end of the connecting wire (2) and then fixedly connecting the wire core (21) to the first pin (11) of the temperature sensing element (1), strip the outer sheath at one end of the connecting wire (2) to form a stripped area (22), and then strip the end of the stripped area (22) far from the outer sheath to expose the wire core (21); Connect the wire core (21) to the first pin (11) of the temperature sensing element (1) by resistance welding, where the included angle between the wire core (21) and the first pin (11) is an acute angle; Bend the first pin (11) so that the first pin (11) is parallel to the connecting wire (2), then slide the second sleeve (14) so that the second sleeve (14) sleeves the solder joint, the stripped area (22), and a part of the first sleeve (13), and the end face of the second sleeve (14) far from the first pin (11) abuts against the outer sheath of the connecting wire (2).

3. The manufacturing process for a sensor for an oven - built - in pot according to claim 1, characterized in that, During the process of fixedly connecting the second pin (12) of the temperature sensing element (1) to the outer sheath of the connecting wire (2), the second pin (12) is wound around the outer sheath of the connecting wire (2) along the first sleeve (13) and the second sleeve (14), wherein the turns of the second pin (12) are flush; then the second pin (12) wound around the outer sheath of the connecting wire (2) is tinned for fixation.

4. The manufacturing process of a sensor for an oven-built-in pot according to claim 1, characterized in that, During the process of sleeving the positioning tube (5) on the monitoring tube (3), the connecting wire (2) is led out from the positioning hole (51) on the positioning tube (5), then the connecting wire (2) passes through the mounting hole (63) on the protective shell (6), and then the positioning tube (5) is installed in the protective shell (6); after installation, the positioning hole (51) and the mounting hole (63) are coaxial.

5. The manufacturing process of a sensor for an oven-built-in pot according to claim 4, characterized in that, After installing the positioning tube (5) in the protective shell (6), use tweezers to twist the connecting wire (2) located in the positioning tube (5) so that the connecting wire (2) in the positioning tube (5) is in a relaxed state.

6. The manufacturing process of a sensor for an oven-built-in pot according to claim 1, characterized in that, During the process of connecting the connecting tube (8) to the protective shell (6), use an adhesive on the external thread of the connecting tube (8) and thread it onto the protective shell (6); inject potting glue through the glue injection hole (81) of the connecting tube (8) and at the outlet where the connecting wire (2) passes through the connecting tube (8).

7. The manufacturing process of a sensor for an oven-built-in pot according to claim 1, characterized in that, After fixing the opening of the protective shell (6) with the rear cover (7), the protective shell (6) and the connecting tube (8) are injection-molded to form a protective sleeve (9).

8. A sensor for an oven-built-in pot manufactured by using the manufacturing process of a sensor for an oven-built-in pot according to any one of claims 1-7, characterized in that: It includes a temperature sensing element (1), a connecting wire (2), a monitoring tube (3), a monitoring cap (4), a positioning tube (5), a connecting tube (8) and a single-end open protective shell (6). The temperature sensing element (1) is fixed in the monitoring cap (4), and the pins of the temperature sensing element (1) are connected to the connecting wire (2); a ring-shaped convex block (31) is provided on the outer wall circumference of the monitoring tube (3), the monitoring cap (4) is fixed to one end of the monitoring tube (3), a monitoring hole (61) for the monitoring tube (3) to pass through is opened on the bottom wall of the protective shell (6), the monitoring tube (3) is installed in the protective shell (6), and one end of the monitoring cap (4) in the monitoring tube (3) passes through the monitoring hole (61); the ring-shaped convex block (31) abuts against the bottom wall of the protective shell (6); The positioning tube (5) is sleeved on the monitoring tube (3). A spring (32) is sleeved on the monitoring tube (3). One end of the spring (32) abuts against the annular bump (31), and the other end abuts against the end face of the positioning tube (5). A limiting bump (52) is provided on the outer wall of one end of the positioning tube (5) close to the spring (32). An annular groove (62) that abuts and cooperates with the limiting bump (52) is provided on the inner wall of the protective shell (6). The connecting tube (8) is fixedly connected to the protective shell (6). The connecting wire (2) passes through the connecting tube (8) and is connected with a plug for connecting to an external socket. A rear cover (7) is provided at the rear end of the protective shell (6).

9. A sensor for an in-oven pot according to claim 8, characterized in that a positioning hole (51) is provided on the side wall of the positioning tube (5), and a mounting hole (63) is provided on the side wall of the protective shell (6). The connecting wire (2) is led out from the positioning hole (51) and passes through the mounting hole (63). The external thread of the connecting tube (8) is threadedly connected to the internal thread of the mounting hole (63). A glue injection hole (81) is provided on the side wall of the connecting tube (8).

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