Novel displacement switch sensor

Abstract

The utility model provides a novel displacement switch sensor, comprising a plastic housing, a coil assembly, a metal housing, a circuit board assembly, a spring, a magnetic tube and a porcelain column, the coil assembly is connected with the circuit board assembly through two metal positioning pins, and the coil assembly and the circuit board assembly are welded together more simply and rapidly; the coil assembly is provided with a plug shell, so that the contact pins are better protected, and collision deformation during assembly is avoided; the spring, the magnetic tube and the knob insulator are sequentially placed in the coil assembly; the accessories are arranged in the plastic shell, so that the circuit board assembly and the coil assembly are better protected; the coil assembly is fastened on the plastic shell through the clasps; the knob insulator extends out of an opening in the upper end of the plastic shell; the adjusting screw is screwed into the screw hole of the plastic shell, compensation fine adjustment is carried out through the screwing depth, the plastic shell is wrapped by the metal shell, meanwhile, the other end of the metal shell extends out of the support and is used for being fixed in an electric appliance, and the displacement switch sensor is simple in combination, more sensitive and more accurate in pressure induction and longer in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of displacement switch sensors, in particular to a novel displacement switch sensor. Background Art

[0002] In order to better meet the needs of customers for exquisite cooking, it is necessary to improve the control level of electric pressure cooker cooking. At present, most of the electric pressure cookers use mechanical pressure switches to control the pressure increase and decrease of the pressure cooker. However, to control cooking more accurately, a more precise displacement switch sensor with the function of a thermostat is needed. The mechanical pressure switch uses the principle of a mechanical lever to deform the internal structure by squeezing the spring sheet, thereby pushing the two contacts to open and close. It has very high requirements on the contacts to ensure the service life of the pressure cooker. In addition, since the pressure switch has an uncontrollable disadvantage that the environment in which the customer uses it is easy to contaminate the contacts, thereby reducing the life of the pressure switch, a more durable "sensor" is needed to replace the mechanical pressure switch. The displacement switch sensor has the characteristics of durability, precise control, and adaptability to a wide range of electrical appliances. It is more suitable for high-end series pressure cookers to replace their mechanical pressure switches. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art and proposes a novel displacement switch sensor.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solution: a new displacement switch sensor, which consists of a plastic shell, a coil assembly, a metal shell, a circuit board assembly, a spring, a magnetic tube, a porcelain column, and a fine-tuning screw.

[0005] As a further description of the above technical solution:

[0006] The coil assembly is installed in a plastic shell; the coil assembly is composed of a coil frame wrapped with enameled wire; one end of the coil assembly has a circular protrusion opening connected to the internal cylindrical space, and a spring, a magnetic tube and a porcelain column are placed in the cylindrical space. The circular opening protrusion is embedded in the boss in the plastic shell, and the other end of the circular opening protrusion has a circular fine-tuning screw hole connected to another internal cylindrical small space to form a fine-tuning screw space. Two metal positioning pins are inserted on the side of the circular opening end, and the two metal positioning pins fix and weld the circuit board assembly; there are arched protrusions on the two extending feet of the coil assembly to support and fix the circuit board.

[0007] As a further description of the above technical solution:

[0008] The circuit board assembly is welded on the side of the coil assembly, one end of the circuit board assembly is provided with two welding positioning holes, the circuit board assembly is divided into a front side and a back side, and the front side is provided with chips, capacitors, resistors, and electronic components with a three-pin socket.

[0009] As a further description of the above technical solution:

[0010] The plastic shell combines the coil assembly, the circuit board assembly, the spring, the magnetic tube, and the porcelain column in its inner space. The open end of the plastic shell is provided with four hooks. The plastic shell is provided with a cylindrical boss. The center of the boss is provided with a circular through hole. The through hole penetrates from the outside of the plastic shell to the inner space. Both sides of the plastic shell are provided with raised positions for clamping and fixing the metal shell.

[0011] As a further description of the above technical solution:

[0012] The extended support frame at one end of the metal shell is used to be fixed on an electrical component (such as the outer pot of a pressure cooker), and the shell position at the other end of the metal shell wraps the plastic shell and the coil assembly combination. The top of the metal shell has 4 buckles, and the two side surfaces of the metal shell have hollow snap positions, and the hollow snap positions are appropriately snapped into the raised snap positions on both sides of the plastic shell.

[0013] As a further description of the above technical solution:

[0014] The ceramic column consists of a push rod end, an annular boss, and a fixed end. The push rod end extends out of the plastic shell through a circular perforation. A protruding annular boss is provided in the middle of the ceramic column. One side of the annular boss abuts against the inner wall of the cylindrical boss of the plastic shell, and the other side supports the magnetic tube.

[0015] As a further description of the above technical solution:

[0016] The magnetic tube is sleeved on the fixed end of the push rod, the magnetic tube is located on the annular boss, one end of the magnetic tube abuts against the annular boss, and the other end of the magnetic tube abuts against the spring; the outer wall of the magnetic tube is close to the inner wall of the coil assembly.

[0017] As a further description of the above technical solution:

[0018] One end of the spring abuts against the magnetic tube, and the other end of the spring abuts against the inner wall of the coil assembly.

[0019] As a further description of the above technical solution:

[0020] The enameled wires of the coil assembly are evenly distributed and wound.

[0021] As a further description of the above technical solution:

[0022] The fine-adjusting screw space of the coil assembly is in the same vertical direction as the cylindrical space of the internal assembly of the coil assembly; and the peripheral wall of the fine-adjusting screw space is threaded.

[0023] As a further description of the above technical solution:

[0024] The fine-adjusting screw is twisted into the fine-adjusting screw space of the coil assembly through thread engagement, and at least a portion of the fine-adjusting screw has been twisted into a reasonable range of the coil winding portion of the coil assembly.

[0025] As a further description of the above technical solution:

[0026] The coil assembly has a protective shell with a three-pin socket, and the protective shell has a locking buckle position to match the corresponding plug, so that the plug with the locking buckle can be fastened.

[0027] The utility model has the following beneficial effects:

[0028] 1. In the utility model, the displacement switch sensor is combined with a plastic shell, a coil assembly, a metal shell, a circuit board assembly, a spring, a magnetic tube, a porcelain column, and a fine-tuning screw to adapt to different types of electrical appliances and electric pressure cookers of different pot types, so that the displacement switch sensor can adapt to various detection environments, thereby reducing secondary development costs and maintenance costs; and for pressure cookers, the displacement switch sensor is more accurate in control and more durable in use than a mechanical pressure switch. The displacement switch sensor has a socket structure, which is easier for customers to operate during assembly and improves production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of the three-dimensional structure of a new displacement switch sensor proposed in the utility model Figure 1 ;

[0030] Figure 2 This is a three-dimensional structure diagram of a new displacement switch sensor proposed by the utility model. Figure 2 ;

[0031] Figure 3 This is a schematic diagram of the decomposition structure of a novel displacement switch sensor proposed by the utility model;

[0032] Figure 4 This is a three-dimensional structural schematic diagram of a coil assembly of a novel displacement switch sensor proposed by the utility model;

[0033] Figure 5 This is a cross-sectional schematic diagram of a novel displacement switch sensor proposed by the utility model;

[0034] Figure 6 A schematic diagram of the specific structure of a circuit board assembly of a novel displacement switch sensor proposed by the utility model;

[0035] Figure 7This is a schematic diagram of the specific structure of a combination of a coil assembly and a circuit board assembly of a novel displacement switch sensor proposed by the utility model;

[0036] Figure 8 This is a schematic diagram of the specific structure of a plastic shell of a new displacement switch sensor proposed by the utility model;

[0037] Fig. 9 A schematic diagram of the specific structure of a novel displacement switch sensor proposed by the utility model;

[0038] Fig.10 The present invention is a schematic diagram of the specific structure of a porcelain column of a novel displacement switch sensor proposed by the present invention.

[0039] Legend:

[0040] A1. Displacement switch sensor; 1. Plastic shell; 2. Coil assembly; 3. Metal shell; 4. Circuit board assembly; 5. Spring; 6. Magnetic tube; 7. Ceramic column; 8. Fine adjustment screw; 9. Metal positioning pin; 11. Boss; 12. Hook; 13. Circular perforation; 14. Raised position; 21. Coil frame; 22. Enameled wire; 23. Circular convex; 24. Cylindrical space; 25. Fine adjustment screw hole; 26. Fine adjustment screw space; 27. Metal positioning pin; 28. Boss with groove; 29. ​​Protective shell; 291. Protective shell; 31. Extended support frame; 32. Shell position; 33. Press buckle; 34. Hollow position; 35. Reinforcement rib; 41. Welding positioning hole; 42. Chip; 43. Capacitor; 44. Resistor; 45. Three-pin socket; 46. Pin; 71. Push rod end; 72. Circular boss; 73. Fixed end. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0042] Reference Figure 1-Figure 10The utility model provides an embodiment: a novel displacement switch sensor A1, wherein the wire is installed in a plastic housing 1; the coil assembly 2 is composed of a coil frame 21 wound with an enameled wire 22; a circular protrusion 23 is provided at one end of the coil assembly 2 to open and connect to an internal cylindrical space 24, in which a spring 5, a magnetic tube 6 and a porcelain column 7 are placed, and the circular opening protrusion is embedded in the boss 11 in the plastic housing 1 to play a positioning role; a circular fine-tuning screw 8 hole is provided at the other end to connect to another internal cylindrical small space to form a fine-tuning screw 8 space for screwing in the fine-tuning screw 8, and the two spaces are not connected to each other; two metal positioning pins 99 are inserted on the side of the circular opening end, and the two metal positioning pins 99 fix and weld the circuit board assembly 4; there are arched protrusions on the two extending feet of the coil assembly 2 to support and fix the circuit board.

[0043] The circuit board assembly 4 is welded on the side of the coil assembly 2. One end of the circuit board assembly 4 has two welding positioning holes 41 for welding the metal positioning pins 99 of the coil frame 21. The circuit board assembly 4 is divided into a front and a back side. The front side is provided with electronic components such as a chip 42, a capacitor 43, a resistor 44, and a three-pin socket 45. When the circuit board assembly 4 is installed on the coil assembly 2, the front side with the electronic components faces the direction of the coil assembly 2, and the back side faces outward to better protect the electronic components. The circuit board assembly 4 is installed and welded on the coil assembly 2, and is combined with other accessories and installed in the plastic housing 1.

[0044] The plastic shell 1 is combined with the coil assembly 2, the circuit board assembly 4, the spring 5, the magnetic tube 6, and the porcelain column 7, which are assembled in the inner space thereof. The open end of the plastic shell 1 is provided with four hooks 12 for fixing and fastening the coil assembly 2. The plastic shell 1 is provided with a cylindrical boss 11, and a circular through-hole 13 is provided in the center of the boss 11. The through-hole runs through from the outer side of the plastic shell 1 to the inner space, and the through-hole is used for the porcelain column 7 to pass through. Both sides of the plastic shell 1 are provided with raised clamping positions 14 for clamping and fixing the metal shell 3.

[0045] The extended support frame 31 at one end of the metal shell 3 is used to be fixed on an electrical component (such as the outer pot of a pressure cooker), and the shell position 32 at the other end wraps the combination of the plastic shell 1 and the coil assembly 2. The top of the metal shell 3 is provided with 4 buckles 33, which are used to fix and buckle the combination of the plastic shell 1 and the coil assembly 2. The two sides of the metal shell 3 are provided with hollow clamping positions 34, and the hollow clamping positions 34 are appropriately clamped at the raised clamping positions 14 on both sides of the plastic shell 1, so that the outer metal shell is more firmly fixed to the plastic shell 1, and the front end of the shell position 32 of the metal shell 3 is optimized to cancel the interlocking baffle , adopts the left and right fixing method, reduces one process (fastening the front baffle) during assembly, thereby improving production efficiency; the extended support frame 31 of the metal shell 3 has flanges on both sides, and multiple reinforcing ribs 35 are added at the connection between the extended support frame 31 and the shell position 32 to enhance the bending strength, and the shell position 32 of the metal shell 3 and the extended support frame 31 are strengthened and optimized, so that the connection between the metal shell 3 and the extended bracket is less likely to break. At the same time, the metal shell 3 has the characteristics of strong plasticity and can adapt to a variety of electrical appliances or pressure cookers of different pot types, thereby low price and low secondary development cost.

[0046] The ceramic column 7 is composed of a push rod end 71, an annular boss 7211, and a fixed end 73. The push rod end 71 extends out of the plastic shell 1 through the circular through hole 13 to sense the deformation change of the external contact object. The middle part of the ceramic column 7 is provided with a protruding annular boss 7211, one side of the annular boss 7211 abuts against the inner wall of the cylindrical boss 11 of the plastic shell 1, and the other side supports the magnetic tube 6. The fixed end 73 passes through the hollow magnetic tube 6 to enable the magnetic tube 6 to move stably.

[0047] The magnetic tube 6 is sleeved on the fixed end 73 of the push rod and is located on the annular boss 7211. One end of the magnetic tube 6 abuts against the annular boss 7211, and the other end abuts against the spring 5. The outer wall of the magnetic tube 6 is close to the inner wall of the coil assembly 2, and slides up and down along the inner wall to generate magnetic induction.

[0048] One end of the spring 5 presses against the magnetic tube 6, and the other end presses against the inner wall of the coil assembly 2. When the deformation of the external contact object increases, the porcelain column 7 is pushed, and the magnetic tube 6 is displaced along with the porcelain column 7 and the spring 5 is compressed. When the deformation of the external contact object is restored, the spring 5 is no longer squeezed, returns to its original state, and pushes the magnetic tube 6. The porcelain column 7 is displaced in the opposite direction along with the magnetic tube 6 and presses against the inner wall of the top end of the plastic shell 1.

[0049] The enameled wire 22 of the coil assembly 2 is wound evenly.

[0050] The space of the fine adjustment screw 8 of the coil assembly 2 is in the same vertical direction as the cylindrical space 24 of the internal component of the coil assembly 2; the peripheral wall of the space of the fine adjustment screw 8 is threaded, which is convenient for adjusting the screw to accurately compensate for electric induction.

[0051] The fine-tuning screw 8 is screwed into the fine-tuning screw 8 space of the coil assembly 2 through threaded engagement to perform precise electric induction compensation fine-tuning; at least a portion of the fine-tuning screw 8 has been screwed into the coil assembly 2 within a reasonable range of the coil winding portion.

[0052] The coil assembly 2 has a protective shell 2929 for the three-pin socket 45, which protects the pins 46 of the three-pin socket 45 of the circuit board assembly 4 and prevents the pins 46 from being deformed or displaced during assembly; the three-pin socket 45 with the protective shell is easier to position into the plug than the three-pin socket 45 without the protective shell, and better protects the pins 46 from being deformed and displaced by collision; the protective shell has a locking buckle position to match the corresponding plug, which can tighten the plug with the lock.

[0053] Working principle: In an electrical appliance (such as a pressure cooker), the porcelain column 7 of the displacement switch sensor A1 is pushed inward by an external force, the magnetic tube 6 moves synchronously with the porcelain in the same direction, the spring 5 is compressed, the magnetic tube 6 moves inward inside the coil assembly 2, the displacement switch sensor A1 generates an electromagnetic induction change, and the output frequency changes in a decreasing manner as a whole; when the external force decreases, the compressed spring 5 inside the displacement switch sensor A1 recovers its deformation, pushing the magnetic tube 6 to move in the opposite direction, the porcelain column 77 moves synchronously with the magnetic tube 6 in the same direction, the magnetic tube 6 moves outward inside the coil assembly 2, causing the sensor to generate an electromagnetic induction change, and the output frequency changes in an increasing manner as a whole. The interior of the electrical appliance executes the command operation according to the frequency output by the displacement switch sensor A1. The displacement switch sensor A1 is reflected in the relationship between the expansion and contraction amount of the porcelain column 7 and the output frequency.

[0054] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel displacement switch sensor (A1), characterized in that: The displacement switch sensor (A1) is composed of a plastic housing (1), a coil assembly (2), a metal housing (3), a circuit board assembly (4), a spring (5), a magnetic tube (6), a porcelain column (7), and a fine adjustment screw (8). The coil assembly (2) is installed in the plastic housing (1); the coil assembly (2) is composed of a coil frame (21) wound with an enameled wire (22); one end of the coil assembly (2) has a circular protrusion (23) opening connected to an internal cylindrical space (24), and the cylindrical space (24) has a A spring (5), a magnetic tube (6) and a porcelain column (7) are placed, and the circular protrusion (23) opening is embedded in the boss (11) in the plastic shell (1). The other end of the circular protrusion (23) opening has a circular fine-adjustment screw (8) hole connected to another internal cylindrical small space to form a fine-adjustment screw (8) space. Two metal positioning pins (9) are inserted into the side of the circular opening end. The two metal positioning pins (9) fix and weld the circuit board assembly (4); the two extension feet of the coil assembly (2) have arched protrusions to support and fix the circuit board.

2. A novel displacement switch sensor (A1) according to claim 1, characterized in that: The circuit board component (4) is welded to the side of the coil component (2); one end of the circuit board component (4) is provided with two welding positioning holes (41); the circuit board component (4) is divided into a front side and a back side, and electronic components such as a chip (42), a capacitor (43), a resistor (44), and a three-pin socket (45) are distributed on the front side.

3. A novel displacement switch sensor (A1) according to claim 2, characterized in that: The plastic shell (1) is assembled with a coil assembly (2), a circuit board assembly (4), a spring (5), a magnetic tube (6), and a porcelain column (7) in its inner space. The open end of the plastic shell (1) is provided with four hooks (12). The plastic shell (1) is provided with a cylindrical boss (11). The center of the boss (11) is provided with a circular through hole (13). The through hole penetrates from the outer side of the plastic shell (1) to the inner space. Both sides of the plastic shell (1) are provided with raised clamping positions (14) for clamping and fixing the metal shell (3).

4. A novel displacement switch sensor (A1) according to claim 3, characterized in that: The extended support frame (31) at one end of the metal shell (3) is used to be fixed on the electrical component, and the shell position (32) at the other end of the metal shell (3) wraps the plastic shell (1) and the coil component (2) combination. The top of the metal shell (3) is provided with four buckles (33), and the two side surfaces of the metal shell (3) are provided with hollow clamping positions (34), and the hollow clamping positions (34) are appropriately clamped on the protruding clamping positions (14) on both sides of the plastic shell (1).

5. A novel displacement switch sensor (A1) according to claim 4, characterized in that: The ceramic column (7) is composed of a push rod end (71), a circular boss (72), and a fixed end (73). The push rod end (71) extends out of the plastic shell (1) through a circular through hole (13). A protruding circular boss (72) is provided in the middle of the ceramic column (7). One side of the circular boss (72) abuts against the inner wall of the cylindrical boss (11) of the plastic shell (1), and the other side supports the magnetic tube (6).

6. A novel displacement switch sensor (A1) according to claim 5, characterized in that: The magnetic tube (6) is sleeved on the fixed end (73) of the top rod, and the magnetic tube (6) is located on the annular boss (72) (11). One end of the magnetic tube (6) abuts against the annular boss (72) (11), and the other end of the magnetic tube (6) abuts against the spring (5); the outer wall of the magnetic tube (6) is close to the inner wall of the coil assembly (2).

7. A novel displacement switch sensor (A1) according to claim 6, characterized in that: One end of the spring (5) abuts against the magnetic tube (6), and the other end of the spring (5) abuts against the inner wall of the coil assembly (2).

8. A novel displacement switch sensor (A1) according to claim 7, characterized in that: The enameled wire (22) of the coil assembly (2) is evenly distributed and wound.

9. A novel displacement switch sensor (A1) according to claim 8, characterized in that: The space for the fine-adjusting screw (8) of the coil assembly (2) is in the same vertical direction as the cylindrical space (24) inside the coil assembly (2); and the peripheral wall of the space for the fine-adjusting screw (8) is threaded.

10. A novel displacement switch sensor (A1) according to claim 9, characterized in that: The fine-adjusting screw (8) is twisted into the fine-adjusting screw (8) space of the coil assembly (2) through threaded engagement, and at least a portion of the fine-adjusting screw (8) has been twisted into a reasonable range of the coil winding portion of the coil assembly (2).

11. A novel displacement switch sensor (A1) according to claim 10, characterized in that: The coil assembly (2) has a protective shell (29) with a three-pin socket (45), and the protective shell (29) has a locking buckle position that matches the corresponding plug, so that the plug with the locking buckle can be fastened.

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