CN112781777A

CN112781777A - Sensor with a sensor element

Info

Publication number: CN112781777A
Application number: CN202011519100.7A
Authority: CN
Inventors: 赖勇
Original assignee: Illinois Tool Works Inc
Current assignee: Illinois Tool Works Inc
Priority date: 2015-03-31
Filing date: 2015-12-31
Publication date: 2021-05-11
Anticipated expiration: 2035-12-31
Also published as: CN112781777B; CN205861270U; CN106017774A; CN106017774B; CN206945200U

Abstract

The invention discloses two sensors, a sensor assembly and a capacitor assembly, wherein the first sensor comprises a shell with a side part provided with an insert pocket, and the insert pocket is used for detachably fixing the capacitor assembly; the second sensor comprises a shell, wherein a buckle is arranged on the shell and comprises a buckle wing, and the buckle wing is provided with two side wings; there is a protrusion on one or both flanks. The sensor assembly comprises a second sensor, the sensor is installed on the installation plate provided with the installation hole, and the buckling head is inserted into the installation hole when the sensor is installed. The capacitor assembly comprises a capacitor mounting rack and a capacitor, and the capacitor mounting rack is used for mounting the capacitor. The invention has the advantages that: (1) the capacitor assembly is convenient to mount, fix and dismount; (2) the sensor shell is flexible to use, and when needed, a capacitor assembly is arranged; when not required, the same sensor housing can be used, except that the capacitive component is omitted; (3) the fixed capacitor component and the sensor are reasonably matched with each other by the shell, so that the assembly space is saved.

Description

Sensor with a sensor element

The present application is a divisional application of an invention patent application having an application date of 2015, 12 and 31, a national application number of 201511031543.0 and an invention name of "sensor".

Technical Field

The present invention relates to a sensor.

Background

A control circuit is installed inside a home appliance, such as a washing machine, to generate various control signals to control the operation and manipulation of the home appliance. The control circuit is typically made up of a number of components (or parts), some of which may be relatively bulky. Since the household appliance is desired to be as small as possible without affecting its function, the space provided inside the household appliance to accommodate the components (or parts) in the control circuit is small, and it is inconvenient to fix the components (or parts) having a large volume.

In addition, a pressure sensor is installed inside the household appliance (such as a washing machine). The mechanisms and ways of mounting pressure sensors inside existing household appliances (such as washing machines) have various defects, such as: in use, the sensor can become loose on the mounting mechanism; the installation and the disassembly are inconvenient; the mounting mechanism or the pressure sensor is easy to damage permanently on the structure when being disassembled.

It is desirable to provide a mounting mechanism for efficiently mounting and securing components (or parts) in a control circuit, particularly relatively bulky components (or parts).

Moreover, it is desirable to provide a mounting arrangement for a pressure sensor that does not loosen on the mounting arrangement during use; the installation and the disassembly are convenient; the mounting mechanism or the pressure sensor is not easy to be damaged permanently on the structure during disassembly.

Disclosure of Invention

The invention aims to solve the problems, and one of the purposes is to provide a sensor which comprises a shell (130), wherein a first side part of the shell (130) is provided with a plug-in pocket (132), and the plug-in pocket (132) is used for detachably mounting a capacitance component (210).

According to the sensor (100), the insert pocket (132) is provided with the insert pocket gap (132), the outer side of the insert pocket gap (133) is provided with the window (134), and the lower part of the window (134) forms the insert pocket wall (138).

The sensor (100) as hereinbefore described, the constant capacitance component (210) comprising:

a capacitive mount (212);

a capacitor (214) mounted on the capacitor mount (212).

The sensor (100) as set forth above, the capacitive mount (212) comprising:

the capacitor mounting base (312) is provided with a mounting hole (314), and the side part of the capacitor mounting base (312) is provided with an inserting arm (316);

the side insertion arms (316) of the capacitive mounting base (312) are insertable into the insertion pocket gaps (133) on the insertion pocket (132) to removably secure the capacitive assembly (210) to the housing (130) of the sensor (100).

The sensor (100) as set forth above, the insertion arm (316) on the capacitive mount (212) comprising:

the left insertion arm (412), the right insertion arm (414) and an intermediate insertion arm (413) arranged between the left insertion arm (412) and the right insertion arm (414), wherein an insertion arm hook or an insertion arm protrusion (416) is arranged at the far end of the intermediate insertion arm (413);

and intervals (422, 424) are arranged between the middle inserting arm (413) and the left inserting arm (412) and the right inserting arm (414) so as to increase the flexibility of the middle inserting arm (413).

As with the sensor (100) described above, when the insert arm (316) is inserted into the insert pocket gap (133) on the insert pocket (132), the insert arm hook or insert arm protrusion (416) on the insert arm (316) contacts the insert pocket wall (138) and flexes back, and when the insert arm hook or insert arm protrusion (416) passes the insert pocket wall edge (139), the insert arm hook or insert arm protrusion (416) springs back into place, such that the insert arm hook or insert arm protrusion (416) snaps over the insert pocket wall edge (139).

The sensor (100) as hereinbefore described, the capacitance (214) comprising:

and the mounting bolt (318) is arranged at the head of the capacitor (214), the mounting bolt (318) is provided with threads, and when the mounting bolt (318) passes through the mounting hole (314) on the capacitor mounting base (312), the nut (320) is screwed into the mounting bolt (318), so that the capacitor (214) is fixed on the capacitor mounting base (312).

The sensor (100) as hereinbefore described, the capacitance (214) comprising:

a pair of pins (223, 225) disposed at the bottom of the capacitor (214).

The sensor (100) as hereinbefore described, the sensor (100) further comprising:

a buckle (122).

The sensor (100) as described above, the catch (122) being provided at the second side of the housing (130).

The sensor (100) as described above, wherein the sensor (100) is mounted on a panel (610), and a mounting hole (612) is formed on the panel (610);

after the buckle (122) is inserted into the mounting hole (612), the sensor (100) is fixedly arranged on the panel (610).

The sensor (100) as hereinbefore described, the catch (122) comprising:

a snap wing (137), the snap wing (137) having two side wings (137.1, 137.2);

a snap head (136) extending laterally from the snap wings (137).

As in the sensor (100) described above, a pair of tabs (906, 908) extending from both sides of the upper portion of the snap head (136) in the direction of the snap wings (137) are chamfered, and the pair of tabs (906, 908) are spaced apart from the two flanks (137.1, 137.2).

Sensor (100) as described above, one protrusion (912, 914) on each of the two flanks (137.1, 137.2); or

A projection (914) is provided on one of the two side flaps (137.1, 137.2).

The sensor (100) as described hereinbefore, the insert pocket (132) being arranged behind one of the two side wings (137.1, 137.2).

As with the sensor (100) described above, the pair of tabs (906, 908) have a flared width that is greater than the top-to-bottom thickness of the snap head (136).

As in the sensor (100) described above, a triggering mechanism (or tab) (916, 918) is provided on each of the two side wings (137.1, 137.2); or

A trip mechanism (914) is arranged on one of the two side wings (137.1, 137.2);

the one or two toggle mechanisms (or tabs) (916, 918) are disposed on the one or two side wings of the two side wings (137.1, 137.2) that are provided with protrusions (914).

The sensor (100) as described in the preceding, the sensor (100) comprising a housing (130), the housing (130) accommodating a pressure-sensitive deformable membrane (711), the deformable membrane (711) dividing a content cavity enclosed by the housing (130) into an upper chamber (713) and a lower chamber (715);

the sensor (100) is placed in a vertical orientation when in use.

The invention also discloses a sensor (100), which comprises a shell (130), wherein a buckle (122) is arranged on the shell (130), the buckle (122) comprises a buckle wing (137), and a buckle head (136) transversely extends from the buckle wing (137);

the snap wing (137) has two side wings (137.1, 137.2);

a projection (912, 914) is arranged on each of the two side flaps (137.1, 137.2), or a projection (914) is arranged on one of the two side flaps (137.1, 137.2).

The sensor (100) as described above, the catch (122) being provided at a second side of the housing (130).

The sensor (100) as described in the preceding, the insert pocket (132) being arranged at a first side of the housing (130) and at the rear of one of the two side wings (137.1, 137.2).

The sensor (100) as hereinbefore described, further comprising:

a pulling mechanism (or a lug) (916, 918) is respectively arranged on the two side wings (137.1, 137.2); or

A trip mechanism (914) is arranged on one of the two side wings (137.1, 137.2);

the one or two pulling mechanisms (or lugs) (916, 918) are arranged on the two side wings (137.1, 137.2)

The one or both flanks provided with a projection (914).

As with the sensor (100) described above, the surface of the snap wings (137) is arcuate.

The sensor (100) as hereinbefore described, further comprising:

the pair of protrusions (912, 914) are disposed on an upper surface of the snap wing (137) at a junction with the toggle mechanism (or tab) (916, 918).

The sensor (100) as hereinbefore described, further comprising:

the far ends of the pair of expansion pieces (906, 908) are respectively provided with clamping shoulders (922, 924).

As with the sensor (100) described above, the snap wings (137) and the pair of dilators (906, 908) are made of an elastic material and therefore have elasticity.

A sensor (100) as hereinbefore described, the sensor (100) being disposed in a vertical orientation in use.

The sensor (100) as described in the preceding, the sensor (100) comprising a housing (130), the housing (130) accommodating a pressure sensitive deformable membrane (711), the deformable membrane (711) dividing a content cavity enclosed by the housing (130) into an upper chamber (713) and a lower chamber (715).

It is a further object of the invention to provide a sensor assembly comprising a second sensor (100) of the kind described above,

the sensor (100) is installed on a mounting plate (1002), a mounting hole (1004) is formed in the mounting plate (1002), and a clamping head (136) is inserted into the mounting hole (1004) during installation.

As mentioned above, the sensor assembly is provided with a pair of fixing holes (1006, 1008) on two sides of the mounting hole, when the sensor (100) is mounted in place, the pair of protrusions (912, 914) are respectively pressed into the pair of fixing holes (1006, 1008), and two side edges of the mounting hole (1004) are embedded into the clamping shoulders (922 and 924).

It is a fourth object of the present invention to provide a capacitor assembly (210) comprising:

a capacitor mounting bracket (212) for mounting a capacitor;

a capacitor (214) mounted on the capacitor mount (212).

The capacitor assembly (210) as described above, the capacitor mount (212) comprising:

the side socket arms (316) of the capacitor mounting base (312) are insertable into a socket gap (133) in a socket (132) to removably secure the capacitor assembly (210) to the housing (130) of the sensor (100).

The capacitor assembly (210) as described above, the insertion arm (316) on the capacitor mount (212) comprising:

As with the capacitor assembly (210) described above, when the receptacle arm (316) is inserted into the receptacle gap (133) of the receptacle (132), the receptacle hook or receptacle protrusion (416) on the receptacle arm (316) contacts the receptacle wall (138) and flexes back, and when the receptacle hook or receptacle protrusion (416) passes the receptacle wall edge (139), the receptacle hook or receptacle protrusion (416) snaps back into place, thereby snapping the receptacle hook or receptacle protrusion (416) over the receptacle wall edge (139).

The capacitive assembly (210) as described hereinbefore, the capacitor (214) comprising:

a pair of pins (223, 225) disposed at the bottom of the capacitor (214).

The invention has the beneficial technical effects that: (1) the capacitor assembly 210 is convenient to mount, fix and dismount; (2) the sensor housing 130 is flexible to use, and when needed, is provided with the capacitance component 210; when not needed, the same sensor housing 130 can be used, except that the capacitive component 210 is omitted; (3) the fixed capacitor assembly 210 is reasonably matched with the sensor including housing 130, and the assembly space is saved.

Drawings

FIG. 1 shows a perspective view of the construction of a sensor 100 of the present invention;

FIG. 2 illustrates the mounting relationship of sensor 100 of the present invention to capacitive assembly 210;

FIG. 3A shows a component assembly view of the capacitor assembly 210 of the present invention;

FIG. 3B shows an assembled capacitor assembly 210 of the present invention;

FIGS. 4A-4D are perspective views of the capacitive mount 212 from different angles;

FIG. 4E is a partial top view of a side portion of the sensor housing 130 of FIG. 1;

FIG. 5 is a view of the capacitive assembly 210 assembled with the sensor housing 130;

FIG. 6 shows the capacitive assembly 210 mounted to the faceplate 610 after assembly with the sensor housing 130;

FIG. 7 shows a cross-sectional view after the capacitive assembly 210 is assembled with the sensor housing 130;

FIG. 8 is an installation view of the components housed within the sensor housing 130 shown in FIG. 7;

FIG. 9 shows a perspective view of another configuration of the sensor 100 of the present invention;

FIGS. 10A-10D illustrate the process of securing the sensor 100 of the present invention to a mounting plate 1002;

11A-11B illustrate the structural cooperation in securing the sensor 100 of the present invention to the mounting plate 1002;

FIGS. 12A-12C illustrate the removal of the sensor 100 of the present invention from the mounting plate 1002;

FIG. 13 shows another embodiment 100' of a sensor 100 of the present invention;

FIG. 14 illustrates another embodiment 1002' of a mounting plate 1002 of the present invention;

FIGS. 15A-15C illustrate perspective views of the sensor 100 of FIG. 1 at different elevations;

FIG. 15D illustrates a cross-sectional view of the sensor 100 shown in FIG. 1 to illustrate the configuration of the internal components in the sensor 100;

FIG. 16 is a top view of the sensor housing 130 of the sensor 100' of FIG. 13;

fig. 17 illustrates the operation of the capacitor 214 of fig. 3B.

Detailed Description

Various embodiments of the present invention will now be described with reference to the accompanying drawings, which form a part hereof. It is to be understood that, although directional terms such as "front", "rear", "upper", "lower", "left", "right", and the like may be used herein to describe various example structural portions and elements of the invention, these terms are used herein for convenience of description only and are to be determined based on example orientations shown in the accompanying drawings. Because the disclosed embodiments of the invention can be arranged in a variety of orientations, these directional terms are used for purposes of illustration only and are not to be construed as limiting. Wherever possible, the same or similar reference numbers used herein refer to the same or like parts.

Fig. 1 shows a perspective view of the structure of a sensor 100 according to the invention. As shown in FIG. 1, the sensor 100 includes a sensor housing 130, a latch 122 (including a latch head 136 and latch wings 137) disposed on a first side of the sensor housing 130, an accessory pocket 132 disposed on a second side of the sensor housing 130, and a tab 105 disposed on a bottom. A window 134 is arranged on the outer side of the insert pocket gap 133 on the accessory insert pocket (or the capacitor insert pocket) 132, an insert pocket wall 138 is formed on the lower portion of the window 134, an insert pocket wall edge 139 is arranged on the lower portion of the insert pocket wall 138, and an insert pocket 132 for detachably fixing the capacitor assembly 210 is arranged on the side portion of the sensor housing 130. As shown in fig. 7, which will be described later, the sensor housing 130 accommodates a pressure-sensitive deformable membrane 711 inside, and the deformable membrane 711 divides an inner cavity enclosed by the housing 130 into an upper chamber 713 and a lower chamber 715. As shown in fig. 2, the side of the sensor housing 130 is provided with an accessory pocket 132 for removably securing the capacitive assembly 210. In this way, the bottom tab 105 of the sensor housing 130 can be accessed to a varying pressure, causing the deformable membrane 711 to deform, which can be tested by deforming the deformable membrane 711.

Fig. 2 illustrates the mounting relationship of the sensor 100 of the present invention to a capacitive assembly 210. As shown in fig. 2, capacitor assembly 210 includes a capacitor mount 212 and a capacitor 214 mounted on capacitor mount 212, and an insertion arm 316 (see fig. 3) is disposed on capacitor mount 212 for insertion into insertion pocket gap 133 surrounding window 134 to removably secure capacitor assembly 210 to housing 130 of sensor 100. Due to the provision of the window 134, the resistance of the insert arm 316 during the entry into the insert pocket gap 133 is reduced; moreover, the operator can see the relative position of the insertion arm 316 during insertion to adjust the orientation so that the insertion arm 316 can be smoothly and efficiently inserted into the pocket gap 133. Additionally, the wall surrounding the window 134 provides sufficient strength to secure the insertion arm 316.

Fig. 3A shows a component assembly diagram of the capacitor assembly 210 of the present invention. As shown in fig. 3A, the capacitor assembly 210 includes a capacitor mount 212 and a capacitor 214 mounted on the capacitor mount 212. The capacitor mounting bracket 212 includes a capacitor mounting base 312, a mounting hole 314 is formed on the capacitor mounting base 312, and an insertion arm 316 is formed at a side portion of the capacitor mounting base 312. The side receptacle arms 316 of the capacitive mounting base 312 can be inserted into the aforementioned receptacle gaps 133 on the receptacle 132 to removably secure the capacitive assembly 210 to the housing 130 of the sensor 100. The capacitor 214 includes a mounting bolt 318 disposed at the head of the capacitor 214, the mounting bolt 318 is provided with threads, and when the mounting bolt 318 passes through the mounting hole 314 of the capacitor mounting base 312 and the nut 320 is screwed into the mounting bolt 318, the capacitor 214 is fixed on the capacitor mounting base 312. The capacitor 214 also includes a pair of

pins

223, 225 disposed at the bottom of the capacitor 214. The connection of wires to a pair of

pins

223, 225 of a capacitor 214 enables the capacitor 214 to be connected to predetermined connection points of the control circuit.

Fig. 3B shows an assembled capacitor assembly 210 of the present invention.

Fig. 4A-4D are perspective views of the capacitive mount 212 from different angles to illustrate more detailed construction of the capacitive mount 212. As shown in fig. 4A-4D, the insertion arm 316 of the capacitive mount 212 includes a left insertion arm 412, a right insertion arm 414, and an intermediate insertion arm 413 disposed between the left insertion arm 412 and the right insertion arm 414; the far end of the inserting arm 413 is provided with an inserting arm hook or an inserting arm bulge 416; a

space

422, 424 is provided between the middle insertion arm 413 and the left and

right insertion arms

412, 414 to increase the flexibility of the middle insertion arm 413 while maintaining the overall strength of the insertion arm 316.

Fig. 4E is a partial top view of the side of the sensor housing 130 of fig. 1, with the pocket gap 133 output from a top view.

Fig. 5 is a view of the capacitive component 210 assembled with the sensor housing 130. To more clearly show the interfitting relationship after installation, FIG. 5 provides a partial cross-sectional view of capacitive assembly 210 assembled with sensor housing 130. As shown in fig. 5, during the insertion of the insertion arm 316 of the capacitive mounting block 212 into the insertion pocket gap 133 of the insertion pocket 132, the insertion arm hook or insertion arm protrusion 416 of the insertion arm 316 contacts the surface of the insertion pocket wall 138, and due to the flexibility of the insertion arm 413, the insertion arm 413 is bent backward, and after the insertion arm hook or insertion arm protrusion 416 passes through the insertion pocket wall edge 139, the insertion arm hook or insertion arm protrusion 416 is rebounded to its original position, so that the insertion arm hook or insertion arm protrusion 416 catches the insertion pocket wall edge 139, and the insertion arm 413 is fixed on the insertion pocket wall 138. When the capacitor assembly 210 is removed, the receptacle arm hook or receptacle arm protrusion 416 is pulled back away from the receptacle wall 138 and the capacitor assembly 210 is pulled upward so that the receptacle arm 316 on the capacitor mount 212 moves out of the receptacle gap 133. As shown in fig. 5, the accessory pocket (or capacitor pocket) 132 is vertically through.

Fig. 6 shows the capacitive assembly 210 mounted to the faceplate 610 after assembly with the sensor housing 130. As shown in fig. 6, a mounting hole 612 is formed on the panel 610, and after the clip 136 is inserted into the mounting hole 612, the sensor 100 is fixed on the panel 610.

Fig. 7 illustrates a cross-sectional view after the capacitive assembly 210 is assembled with the sensor housing 130 to illustrate the structure of the components within the sensor housing 130. As shown in fig. 7, a pressure-sensitive deformable membrane 711 is accommodated in the housing 130, and the deformable membrane 711 divides an inner cavity enclosed by the housing 130 into an upper chamber 713 and a lower chamber 715. The bottom tab 105 of the sensor housing 130 is adapted to receive a changing pressure for deforming the deformable membrane 711, the pressure change being reflected by the deformation of the deformable membrane 711.

Fig. 8 is an installation view of the components housed within the sensor housing 130 shown in fig. 7. As can be seen in fig. 7 and 8, the housing 130 of the sensor 100 houses a deformable membrane 711 sensitive to the hydraulic pressure, the bottom joint 105 being intended to be connected to a sink or tub of an electric household appliance, such as a washing machine, for measuring the level or pressure of the water in the sink or tub.

Patent No. 200980148968.6 (granted publication No. CN102239395B) discloses a sensor 1, 100. The sensor 100 of the present invention senses the water level in the tub of the washing machine by sensing the pressure change, wherein the elements, structure and operation principle are similar to those of the sensors 1, 100 of patent No. 200980148968.6 (publication No. CN 102239395B). The applicant now incorporates into this application the specification with patent number 200980148968.6 (grant CN 102239395B).

Fig. 9 shows a perspective view of another configuration of the sensor 100 of the present invention. As shown in fig. 1 and 9, the housing 130 of the seed sensor 100 is provided with a latch 122, which includes latch wings 137 and a latch head 136 extending from the latch wings 137. A pair of clamping (or expanding)

pieces

906 and 908 which extend from two sides of the upper part of the buckle head 136 in the direction of the buckle wing 137 in a chamfering way, and a gap is formed between the pair of clamping (or expanding)

pieces

906 and 908 and the buckle wing 137; the distal ends of the pair of

stretch panels

906, 908 are provided with respective snap shoulders (922, 924). The snap wings 137 are arc-shaped and have a pair of

protrusions

912, 914 at both ends. A pulling mechanism (or tab) 916, 918 extends from each end of the snap wing 137, and the pair of

protrusions

912, 914 are disposed at the junction of the snap wing 137 and the pulling

mechanism

916, 918.

In the present invention, the capacitor 214 is used to provide a large instantaneous driving current, and is generally large in size, for example, it may have a diameter of 25-40 mm and a height of 70-120 mm. The invention has the advantages that: (1) the capacitor assembly 210 is convenient to mount, fix and dismount; (2) the sensor housing 130 is flexible to use, and when needed, houses the capacitive assembly 210; when not needed, the same sensor housing 130 can be used, except that the capacitive component 210 is omitted; (3) the fixed capacitor assembly 210 is reasonably matched with the sensor including housing 130, and the assembly space is saved.

Fig. 10A-10D illustrate the process of securing the sensor 100 of the present invention to a mounting plate 1002. FIG. 10A shows the front side of the mounting plate 1002. As shown in FIG. 10A, the mounting plate 1002 has mounting holes 1004 with a width W_AA pair of fixing

holes

1006 and 1008 are formed on both sides of the mounting hole 1002. In installing the sensor 100 of the present invention, the operator first positions the sensor 100 in the horizontal direction H and aligns the snap head 136 with the mounting hole 1004. As shown in fig. 10B, the operator gradually pushes the snap head 136 into the mounting hole 1004 because of the wide W of the snap head 136_K(see FIG. 11B) is less than (or equal to) the width of the mounting hole as W_ASo that the snap head 136 can enter the mounting hole 1004; but because of the snap wings137 length L_A(see fig. 14) is greater than the height H of the mounting hole 1004_A(see fig. 12C), when the snap wings 137 initially contact the mounting plate 1002, a pushing force is applied, and the snap wings 137, which are curved and elastic, are stopped, gradually reduce the curved arc, and gradually change toward a flat shape. As shown in fig. 10C, the operator rotates the sensor 100 clockwise (although a counterclockwise rotation is also possible). When the sensor 100 is rotated clockwise (or counterclockwise) 90 degrees, as shown in fig. 10D, to reach a vertical V placement, the pair of

protrusions

912, 914 at both ends of the snap wings 137 are aligned with the pair of securing

holes

1006, 1008 on the mounting plate 1002; the ideal position of the sensor (100) in use is to be placed in a vertical direction. Since the pair of

protrusions

912, 914 are matched in shape with the pair of fixing

holes

1006, 1008 and the diameter of the pair of

protrusions

912, 914 is smaller than the diameter of the pair of fixing

holes

1006, 1008, the pair of

protrusions

912, 914 are pressed into the pair of fixing

holes

1006, 1008, respectively, by the elastic force generated by the snap wings 137. When the pair of

protrusions

912, 914 are resiliently pressed into the pair of securing

holes

1006, 1008, respectively, a "click" can be heard to conveniently indicate that the sensor 100 is in place during rotation.

11A-11B illustrate the structural cooperation for securing the sensor 100 of the present invention to the mounting plate 1002. Fig. 11A shows a cross-sectional view of sensor 100 after installation with mounting plate 1002. As shown in fig. 11A, a pair of

protrusions

912, 914 are press-fitted into a pair of fixing

holes

1006, 1008, respectively, and both side edges of the mounting hole 1004 are fitted into the catching

shoulders

922 and 924, further enhancing the fixing of the sensor 100 on the household appliance mounting plate 1002. Fig. 11B shows the back side of the mounting plate 1002, showing the snap head 136 being secured to the mounting plate 1002 after 90 degrees rotation from the front side of the mounting plate 1002, by being inserted through the mounting holes 1004 to the back side of the mounting plate 1002.

Fig. 12A-12C illustrate the process of removing the sensor 100 of the present invention from the mounting plate 1002. As shown in FIG. 12A, to remove the sensor 100 of the present invention from the mounting plate 1002, the operator manually grasps the toggle mechanisms (or tabs) 916, 918 on the snap wings 137 and pulls the toggle mechanisms (or tabs) 916, 918 rearwardly because the snap wings 137 are formed with snap wingsMade of resilient material, the ends of snap wings 137 are moved rearwardly to pull a pair of

protrusions

912, 914 on snap wings 137 out of a pair of securing

holes

1006, 1008, respectively, on mounting plate 1002. At this time, the maximum distance L between the pair of the

expansion pieces

906 and 908 on the locking head 136 is set_Z(see fig. 16) is greater than the width W of the mounting hole 1004 in the mounting plate 1002_AW being larger than the width of the snap head 136_KAnd both side edges of the mounting hole 1004 are fitted into the catching

shoulders

922 and 924, the sensor 100 cannot be pulled out from the mounting hole 1004 yet. As shown in fig. 12B, the operator rotates the sensor 100 counterclockwise (although clockwise rotation is also possible). As shown in fig. 12C, when the sensor 100 is rotated counterclockwise (or clockwise) by 90 degrees from the placement in the vertical direction V to the placement in the horizontal direction H, the sensor 100 can be smoothly pulled out of the mounting hole 1004 on the mounting plate 1002.

Fig. 13 shows another embodiment 100' of the sensor 100 of the present invention. In the embodiment of fig. 13, all of the components of the illustrated sensor 100 ' (except for the snap wings 137 ') are the same as the sensor 100 ' of fig. 1. In the embodiment shown in fig. 13, the snap wings 137' are provided with only one protrusion 914.

FIG. 14 shows another embodiment 1002' of a mounting plate 1002 of the present invention. In the embodiment shown in FIG. 14, only one securing hole 1008 is provided on one side of the mounting hole 1004 in the mounting plate 1002'. During installation, the protrusions 914 on the snap wings 137 'cooperate with the securing holes 1008 on the mounting plate 1002'.

In fact, the snap wings 137' of the present invention can be installed without the protrusion 914 and the tab 918, but cannot be easily removed from the installation plate 1002.

The operation of the sensor 100 ' to be mounted to the mounting plate 1002 ' or to be removed from being mounted to the mounting plate 1002 ' is similar to the operation of the sensor 100 to be mounted to the mounting plate 1002 or to be removed from being mounted to the mounting plate 1002.

fig. 15D illustrates a cross-sectional view of the sensor 100 shown in fig. 1 to illustrate the structure of internal components in the sensor 100. An installation view of the internal components in the sensor 100 is shown in fig. 8.

Fig. 16 is a top view of the sensor housing 130 of the sensor 100' of fig. 13.

The invention also has the beneficial technical effects that: (1) the sensor is convenient to mount; (2) the sensor can not (or is not easy to) loose in use after being installed; (3) the position positioning (especially the vertical position positioning) when the sensor is installed is convenient; (4) the sensor is convenient to disassemble; (5) when the sensor is disassembled, the installation mechanism or the sensor body cannot be damaged destructively.

Fig. 17 illustrates the operation of the capacitor 214 of fig. 3B. Some washing machines use a single-phase motor 1706, but the single-phase current 1706 flowing through the single-phase motor 1706 cannot generate a rotating magnetic field, so that a certain method needs to be adopted to generate the rotating magnetic field, and the phase separation is performed by using capacitors 214, so that the current in the two windings generates a phase difference of approximately 90 ° to generate the rotating magnetic field. The capacitive induction motor 1703 has two

windings

1707, 1708, a start winding 1708 and a run winding 1007. The two windings are spatially separated by 90 degrees. A capacitor 214 with larger capacity is connected in series with the start winding, and when the run winding 1708 and the start winding 1707 pass single-phase alternating current, the current in the start winding 1008 is advanced by 90 degrees in time than the current in the run winding 1707 due to the capacitor 214, and reaches the maximum value. Two identical pulse magnetic fields are formed in time and space, a rotating magnetic field is generated in an air gap between the stator and the rotor, an induction current is generated in the motor rotor under the action of the rotating magnetic field, and the current interacts with the rotating magnetic field to generate electromagnetic field torque, so that the motor 1702 rotates. Of course, the washing machine using the three-phase motor does not need the split-phase capacitor 214.

Claims

1. A water level/pressure sensor (100) comprising a sensor housing (130), characterized by:

the sensor (100) includes a pouch (132), the pouch (132) being located at a first side of the sensor housing (130) of the water level/pressure sensor (100), the pouch (132) being for removably mounting a capacitor (214), the capacitor (214) being for starting a single phase motor.

2. The sensor (100) of claim 1, wherein:

be equipped with slash pocket clearance (133) on slash pocket (132), slash pocket clearance (133)'s the outside is equipped with window (134) the lower part of window (134) forms slash pocket wall body (138).

3. The sensor (100) of claim 1,

the capacitor (214) is mounted on a capacitor mount (212).

4. A sensor (100) according to claim 3, wherein the capacitive mounting block (212) comprises:

the receptacle arms (316) of the sides of the capacitive mounting base (312) are insertable into the receptacle gaps (133) of the receptacle (132) to removably secure the capacitor (214) to the sensor housing (130) of the sensor (100).

5. The sensor (100) of claim 4, wherein the insertion arm (316) on the capacitive mount (212) comprises:

and a space (422, 424) is arranged between the middle inserting arm (413) and the left inserting arm (412) and the right inserting arm (414) so as to increase the flexibility of the middle inserting arm (413).

6. The sensor (100) of claim 5, wherein:

when the insertion arm (316) is inserted into the insertion pocket gap (133) of the insertion pocket (132), the insertion arm hook or the insertion arm protrusion (416) on the insertion arm (316) contacts the insertion pocket wall (138) to bend backwards, and after the insertion arm hook or the insertion arm protrusion (416) passes the insertion pocket wall edge (139) of the insertion pocket wall (138), the insertion arm hook or the insertion arm protrusion (416) springs back to the original position, so that the insertion arm hook or the insertion arm protrusion (416) catches the insertion pocket wall edge (139),

wherein the receptacle wall edge (139) is located on an opposite side of the receptacle wall (138) from the window (134).

7. The sensor (100) of claim 4, wherein the capacitance (214) comprises:

a mounting bolt (318) provided at a head of the capacitor (214), the mounting bolt (318) being provided with a thread, the capacitor (214) being fixed to the capacitor mounting base (312) when the mounting bolt (318) passes through the mounting hole (314) on the capacitor mounting base (312) and a nut (320) is screwed into the mounting bolt (318).

8. The sensor (100) of claim 3, wherein the capacitance (214) comprises:

a pair of pins (223, 225) disposed at the bottom of the capacitor (214).

9. The sensor (100) of claim 1, wherein the sensor (100) further comprises:

a buckle (122).

10. The sensor (100) of claim 9, wherein:

the buckle (122) is arranged on the second side part of the sensor shell (130).

11. The sensor (100) of claim 9, wherein:

the sensor (100) is arranged on a panel (610), and a mounting hole (612) is formed in the panel (610);

the sensor (100) is fixed on the panel (610) after the buckle (122) is inserted into the mounting hole (612) on the panel (610).

12. The sensor (100) of claim 9, wherein the clasp (122) comprises:

a snap wing (137), the snap wing (137) having two side wings (137.1, 137.2); and

a snap head (136) extending laterally from the snap wings (137).

13. The sensor (100) of claim 12, wherein the clasp (122) further comprises:

and a pair of expansion pieces (906, 908) which are chamfered from two sides of the upper part of the buckling head (136) and extend towards the buckling wing (137), and the pair of expansion pieces (906, 908) are spaced from the two side wings (137.1, 137.2).

14. The sensor (100) of claim 12, wherein:

a bulge (912, 914) is respectively arranged on the two side wings (137.1, 137.2); or

A projection (914) is provided on one of the two side flaps (137.1, 137.2).

15. The sensor (100) of claim 12, wherein:

the insert pocket (132) is arranged behind one of the two side wings (137.1, 137.2).

16. The sensor (100) of claim 13, wherein:

the opening width of the pair of expansion pieces (906, 908) is larger than the upper and lower thicknesses of the buckling head (136).

17. The sensor (100) of claim 12, wherein:

-a toggle mechanism (or tab) (914) is provided on one of said two lateral wings (137.1, 137.2);

the toggle mechanism (or tab) (916, 918) is disposed on one of the two side wings (137.1, 137.2) on which a protrusion (914) is disposed.

18. The sensor (100) of any one of claims 1-17, wherein:

the sensor shell (130) contains a deformable membrane (711) sensitive to pressure, and the deformable membrane (711) divides a content cavity enclosed by the sensor shell (130) into an upper chamber (713) and a lower chamber (715);

the sensor (100) is placed in a vertical orientation when in use;

the sensor (100) and the capacitor (214) are for a washing machine, and the sensor (100) is for detecting a water level in the washing machine.

19. A water level/pressure sensor comprising a sensor housing (130), characterized in that:

the sensor comprising a pocket (132), the pocket (132) being located at a first side of the sensor housing (130) of the water level/pressure sensor (100), the pocket (132) being for detachably mounting a capacitor (214),

wherein the sensor (100) is for a washing machine, the sensor (100) is for detecting a water level in the washing machine, and the capacitor is for starting a single phase motor of the washing machine.

20. A capacitive assembly (210), the capacitive assembly (210) comprising:

a capacitor mounting bracket (212) for mounting a capacitor (214); and

the capacitor (214) mounted on the capacitor mount (212).

21. A sensor (100) comprising a sensor housing (130), the sensor housing (130) having a latch (122) thereon, characterized in that:

the buckle (122) comprises a buckle wing (137) and a buckle head (136) transversely extending from the buckle wing (137);

the snap wing (137) has two side wings (137.1, 137.2);

a projection (912, 914) is arranged on each of the two side wings (137.1, 137.2), or a projection (914) is arranged on one of the two side wings (137.1, 137.2).

22. A method of mounting a capacitive assembly as claimed in claim 20 to a sensor as claimed in any one of claims 1 to 19.

23. A method of installing or removing a sensor as claimed in claim 21.

24. A water level/pressure sensor (100) comprising the features or any combination of the features of any one of claims 1-18.

25. A water level/pressure sensor (100) comprising the features or any combination of the features of any one of the claims 19.

26. A capacitive assembly (210) comprising the features or any combination of the features of any one of the claims 20.

27. A sensor (100) comprising the technical feature or any combination of the technical features of claim 21.

28. A method comprising the features or any combination of the features of any one of claims 22.

29. A method comprising the features or any combination of the features of any one of claims 23.