阅读说明：本技术 一种重力开关 (Gravity switch ) 是由 吴光斌 林贤飞 于 2020-07-17 设计创作，主要内容包括：本发明公开了一种重力开关。重力调节装置包括压力开关和压力调节机构,压力开关的顶部连接有固定面板,固定面板与压力开关之间设有弹片,弹片的下方设有接触片,弹片上设有与接触片抵接的动触片；压力调节机构与固定面板螺纹连接,底部通过第一传动杆与弹片抵接,调节弹片的突跳位移；行程调节装置通过第二传动杆与弹片抵接,其内部设有圆柱形防护套,防护套内设有第一螺纹孔,螺纹孔外套设有压力弹簧,螺纹孔内设有调节螺丝,调节螺丝上设有定位孔,第二传动杆的顶端插设在定位孔内,底端伸出定位座与弹片抵接,调节动触片和接触片的通断。能够很快速的断电,且断电后不受时间、温度影响,一直保持断电状态,安装方便,提高使用寿命和安全性。(The invention discloses a gravity switch. The gravity adjusting device comprises a pressure switch and a pressure adjusting mechanism, the top of the pressure switch is connected with a fixed panel, an elastic sheet is arranged between the fixed panel and the pressure switch, a contact piece is arranged below the elastic sheet, and a movable contact piece abutted against the contact piece is arranged on the elastic sheet; the pressure adjusting mechanism is in threaded connection with the fixed panel, the bottom of the pressure adjusting mechanism is abutted to the elastic sheet through the first transmission rod, and the snap-through displacement of the elastic sheet is adjusted; the stroke adjusting device is internally provided with a cylindrical protective sleeve through a second transmission rod and the abutting of the elastic sheet, a first threaded hole is formed in the protective sleeve, a pressure spring is sleeved outside the threaded hole, an adjusting screw is arranged in the threaded hole and provided with a positioning hole, the top end of the second transmission rod is inserted into the positioning hole, the bottom end of the second transmission rod extends out of the positioning seat and the abutting of the elastic sheet, and the on-off of the movable contact sheet and the contact sheet is adjusted. The power-off state can be quickly maintained without being influenced by time and temperature after power-off, the installation is convenient, and the service life and the safety are improved.)

1. The utility model provides a gravity switch, including the casing and with the cap of casing joint, its characterized in that still includes:

the gravity adjusting device is arranged in the shell and comprises a pressure switch and a pressure adjusting mechanism in transmission connection with the pressure switch, the top of the pressure switch is connected with a fixed panel, an elastic sheet is arranged between the fixed panel and the pressure switch, a contact piece is arranged below the elastic sheet, and a movable contact piece abutted against the contact piece is arranged on the elastic sheet;

the pressure adjusting mechanism is in threaded connection with the fixed panel, and the bottom of the pressure adjusting mechanism is abutted to the elastic sheet through a first transmission rod to adjust the snap-through displacement of the elastic sheet;

the stroke adjusting device comprises a positioning seat and a positioning cover which are connected through threads, and a cylindrical protective sleeve is arranged in the stroke adjusting device and is abutted to the elastic sheet through a second transmission rod.

2. The device of claim 1, wherein the pressure switch is clamped with the fixing panel through a stud, a ceramic tube is sleeved on the stud, and the elastic sheet is sleeved on the ceramic tube.

3. The apparatus as claimed in claim 2, wherein the pressure switch further comprises a first magnetic ring, a first connection terminal, a second magnetic ring, a second connection terminal and a third magnetic ring, the first magnetic ring and the second magnetic ring are sleeved with the contact piece and the first connection terminal, the contact piece is connected with the first connection terminal through a wire, the second magnetic ring and the third magnetic ring are sleeved with the spring piece and the second connection terminal, and the spring piece is electrically connected with the second connection terminal.

4. The device of claim 1, wherein the pressure adjusting mechanism comprises a fixed shaft, a first transmission rod and an adjusting screw, the fixed shaft is in threaded connection with the fixed panel, a second threaded hole is formed in the fixed shaft, the adjusting screw is in threaded connection with the fixed shaft, the first transmission rod is placed in the second threaded hole and is positioned at the lower end of the adjusting screw, the bottom surface of the first transmission rod is abutted to the elastic sheet, the fixed shaft rotates up and down relative to the fixed panel, and the adjusting screw rotates up and down relative to the fixed shaft.

5. The device according to claim 1, characterized in that an annular positioning groove is formed between said first threaded hole and the inner wall of said protective sheath, said pressure spring being inserted in said positioning groove.

6. The device of claim 2, wherein the bottom of the stud is provided with a mounting groove, and the housing is provided with a mounting pin adapted to the mounting groove.

7. The device of claim 1, wherein the housing comprises a left housing and a right housing fixed by screws, a limiting groove for accommodating the stroke adjusting device is formed between the left housing and the right housing, and a clamping groove for fixing the stroke adjusting device is formed on the inner wall of the limiting groove.

8. The device as claimed in claim 1, wherein the housing cover is provided with a buckle at each side thereof, and the housing cover is provided with a buckle hole at the bottom thereof corresponding to the buckle.

9. The apparatus according to claim 3, wherein the case cover is provided with lead holes for the leads of the first and second connection terminals to protrude.

10. The device of claim 1, wherein the housing is provided with mounting grooves on two sides of the outer portion thereof, and the housing cover is further provided with positioning holes.

Technical Field

The invention relates to the technical field of electrical switches, in particular to a gravity switch.

Background

The gravity switch is a gravity sensing switch, can help a user to close gravity sensing and plays a role in power failure, and electric appliances such as an electric cooker and the like, of which the inner container can be separated from the cooker body, need to detect whether the inner cooker is correctly placed before working. The existing electric cooker uses a common press switch to detect the position of an inner pot, the switch is made of common plastics, the temperature resistance is below 180 ℃, as the press switch is very close to a heating disc, partial products are even directly integrated in the heating disc, the working temperature is high, the body of the switch is easy to melt, the detection fault is caused, in addition, the press switch works in a high-temperature environment for a long time, the fault rate is high, and the service life of electric appliances such as the electric cooker is influenced. Part of the special push switches are made of high-temperature-resistant plastics, and the products are difficult to process, high in material and manufacturing cost and not beneficial to popularization in common electric appliances.

In order to solve the above problems, chinese patent CN208460653U discloses a gravity protection switch, which includes a pressure plate, a fixed contact plate, an elastic plate, a first terminal, a second terminal, a first push rod, a second push rod, a top plate and an adjusting mechanism; the elastic sheet is provided with a movable contact spring; the first terminal is electrically connected with the fixed contact piece, and the second terminal is electrically connected with the elastic piece; the tail end of the pressure sheet is provided with a pressure conduction rod; when the pressure on the pressure conduction rod is lower than a preset value, the movable contact piece and the fixed contact piece keep a preset distance; when the pressure on the pressure conduction rod is higher than the preset value, the pressure sheet drives the elastic sheet to move downwards, the movable contact sheet is abutted to the fixed contact sheet, and the first terminal is electrically communicated with the second terminal. In the scheme, when the inner container of the electric appliance with the separable inner container leaves the electric appliance, the electric appliance is automatically powered off; when the inner container is replaced by the electric appliance, the switch receives the weight of the inner container, and the electric appliance is automatically powered on, so that the product is safer.

However, the following problems still exist in the using process:

(1) when the electric appliance boils water, the power supply is pressed to switch on the circuit, and after no water or water is evaporated, the elastic sheet of the gravity switch cannot be separated in time and cannot be powered off in time, so that the kettle is damaged due to long-time dry heating, and potential safety hazards can be caused in serious cases.

In view of this, it is urgently needed to improve the structure of the existing gravity switch so as to be capable of quickly powering off, and not affected by time and temperature after powering off, keep a power-off state all the time, be convenient to install, and improve service life and safety.

Disclosure of Invention

The invention aims to solve the technical problems that when the existing electric appliance is used for boiling water, a power supply is pressed to switch on a circuit, when no water exists or the water is evaporated, an elastic sheet of a gravity switch cannot be separated in time and cannot be powered off in time, a kettle is damaged due to long-time dry heating, and potential safety hazards can be caused when the kettle is serious.

In order to solve the above technical problem, the present invention provides a gravity switch, including a housing and a housing cover clamped to the housing, further including:

the gravity adjusting device is arranged in the shell and comprises a pressure switch and a pressure adjusting mechanism in transmission connection with the pressure switch, the top of the pressure switch is connected with a fixed panel, an elastic sheet is arranged between the fixed panel and the pressure switch, a contact piece is arranged below the elastic sheet, and a movable contact piece abutted against the contact piece is arranged on the elastic sheet;

the pressure adjusting mechanism is in threaded connection with the fixed panel, and the bottom of the pressure adjusting mechanism is abutted to the elastic sheet through a first transmission rod to adjust the snap-through displacement of the elastic sheet;

the stroke adjusting device comprises a positioning seat and a positioning cover which are connected through threads, and a cylindrical protective sleeve is arranged in the stroke adjusting device and is abutted to the elastic sheet through a second transmission rod.

In the above scheme, the pressure switch is clamped with the fixed panel through the stud, the stud is sleeved with the ceramic tube, and the elastic sheet is sleeved on the ceramic tube.

In the above scheme, the pressure switch further includes a first magnetic ring, a first connection terminal, a second magnetic ring, a second connection terminal and a third magnetic ring, which are sleeved on the ceramic tube, the contact piece and the first connection terminal are sleeved between the first magnetic ring and the second magnetic ring, the contact piece is in electric connection with the first connection terminal, the elastic piece and the second connection terminal are sleeved between the second magnetic ring and the third magnetic ring, and the elastic piece is electrically connected with the second connection terminal.

In the above scheme, the pressure adjusting mechanism comprises a fixed shaft, a first transmission rod and an adjusting screw, the fixed shaft is in threaded connection with the fixed panel, a second threaded hole is formed in the fixed shaft, the adjusting screw is in threaded connection with the fixed shaft, the first transmission rod is arranged in the second threaded hole and is located at the lower end of the adjusting screw, the bottom surface of the first transmission rod is abutted to the elastic piece, the fixed shaft rotates up and down relative to the fixed panel, and the adjusting screw rotates up and down relative to the fixed shaft.

In the above scheme, an annular positioning groove is formed between the first threaded hole and the inner wall of the protective sleeve, and the pressure spring is inserted in the positioning groove.

In the above scheme, the bottom of the stud is provided with a mounting groove, and the shell is provided with a mounting pin matched with the mounting groove.

In the above scheme, the casing includes left casing and right casing through the screw fixation, left side casing with form between the right side casing and be used for holding stroke adjusting device's spacing groove, be equipped with on the inner wall of spacing groove and be used for fixing stroke adjusting device's draw-in groove.

In the above scheme, the two sides of the shell cover are respectively provided with a buckle, and the bottom of the shell is respectively provided with a clamping hole corresponding to the buckle.

In the above scheme, the shell cover is provided with the lead wire holes for the lead wires of the first connecting terminal and the second connecting terminal to extend out.

In the above scheme, the two sides of the outer part of the shell are respectively provided with the mounting grooves, and the shell cover is also provided with the positioning holes.

Compared with the prior art, the invention comprises a gravity adjusting device and a stroke adjusting device, wherein the gravity adjusting device comprises a pressure switch and a pressure adjusting mechanism in transmission connection with the pressure switch, the top of the pressure switch is connected with a fixed panel, an elastic sheet is arranged between the fixed panel and the pressure switch, a contact piece is arranged below the elastic sheet, and a movable contact piece which is abutted against the contact piece is arranged on the elastic sheet; the pressure adjusting mechanism is in threaded connection with the fixed panel, the bottom of the pressure adjusting mechanism is abutted to the elastic sheet through the first transmission rod, and the snap-through displacement of the elastic sheet is adjusted; the stroke adjusting device comprises a positioning seat and a positioning cover which are connected through threads, a cylindrical protective sleeve is arranged inside the stroke adjusting device, a threaded hole is formed in the protective sleeve, a pressure spring is sleeved outside the threaded hole, an adjusting screw is arranged in the threaded hole, one end of the adjusting screw is provided with a positioning hole, the top end of the second transmission rod is inserted into the positioning hole, the bottom end of the second transmission rod stretches out of the abutting joint of the positioning seat and the elastic piece, and the movable contact piece and the contact piece are adjusted to be switched on and off. The power-off state can be quickly maintained without being influenced by time and temperature after power-off, the installation is convenient, and the service life and the safety are improved.

Drawings

FIG. 1 is a schematic structural view of a gravity switch according to the present invention;

FIG. 2 is a cross-sectional view of the gravity switch of the present invention;

FIG. 3 is a schematic structural diagram of a housing of the gravity switch of the present invention;

FIG. 4 is a schematic structural diagram of a right housing of the gravity switch of the present invention;

FIG. 5 is a schematic structural view of a cover of the gravity switch of the present invention;

FIG. 6 is a schematic structural diagram of a protective cover of the gravity switch of the present invention;

fig. 7 is a schematic structural view of an adjusting screw post of the gravity switch of the present invention.

Detailed Description

The invention provides a gravity switch, which is convenient to quickly cut off power, is not influenced by time and temperature after power off, always keeps a power off state, is convenient to install, and prolongs the service life and improves the safety. The invention is described in detail below with reference to the drawings and the detailed description.

As shown in fig. 1, 2, 6 and 7, the gravity switch provided by the present invention includes a housing and a housing cover 2 clamped with the housing, and further includes:

the gravity adjusting device 3 is arranged in the shell and comprises a pressure switch and a pressure adjusting mechanism in transmission connection with the pressure switch, the top of the pressure switch is connected with a fixed panel 31, an elastic sheet 33 is arranged between the fixed panel 31 and the pressure switch, a contact sheet 35 is arranged below the elastic sheet 33, and a movable contact sheet 331 abutted against the contact sheet 35 is arranged on the elastic sheet 33;

the pressure adjusting mechanism is in threaded connection with the fixed panel 31, the bottom of the pressure adjusting mechanism is abutted to the elastic sheet 33 through the first transmission rod 314, and the snap-through displacement of the elastic sheet 33 is adjusted;

stroke adjusting device 4, through second transfer line 45 and shell fragment 33 butt, include positioning seat 44 and location lid 43 through threaded connection, its inside is equipped with cylindrical lag 41, be equipped with first screw hole 46 in the lag 41, first screw hole 46 overcoat is equipped with pressure spring 42, be equipped with regulation screw post 312 in the first screw hole 46, the one end of regulation screw post 312 is equipped with locating hole 313, the top of second transfer line 45 is inserted and is established in locating hole 318, the bottom stretches out positioning seat 44 and shell fragment 33 butt, adjust pressure switch's gravity value size.

Preferably, the pressure switch is clamped with the fixing panel 31 through a stud 36, the ceramic tube 10 is sleeved on the stud 36, and the elastic sheet 33 is sleeved on the ceramic tube 10. The pressure switch further comprises a first magnetic ring 40, a first wiring terminal 34, a second magnetic ring 39, a second wiring terminal 32 and a third magnetic ring 38, the first magnetic ring 40, the second magnetic ring 39, the second wiring terminal 32 and the third magnetic ring 38 are sleeved on the ceramic tube 10, a contact piece 35 and the first wiring terminal 34 are sleeved between the first magnetic ring 40 and the second magnetic ring 39, the contact piece 35 is in electric connection with the first wiring terminal 34, an elastic piece 33 and the second wiring terminal 32 are sleeved between the second magnetic ring 39 and the third magnetic ring 38, and the elastic piece 33 is electrically connected with the second wiring.

The pressure adjusting mechanism comprises a fixed shaft 310, a first transmission rod 313 and an adjusting screw 311, the fixed shaft 310 is in threaded connection with the fixed panel 31, a second threaded hole is formed in the fixed shaft 310, the adjusting screw 311 is in threaded connection with the fixed shaft 310, the first transmission rod 314 is arranged in the second threaded hole and is located at the lower end of the adjusting screw 311, the bottom surface of the first transmission rod is abutted to the elastic sheet 33, the fixed shaft 310 rotates up and down relative to the fixed panel 31, and the adjusting screw 311 rotates up and down relative to the fixed shaft 310.

The lower terminal surface of fixed axle 310 is equipped with the external screw thread, is equipped with the shaft hole on the fixed panel 31, is equipped with the internal thread with the external screw thread adaptation in the shaft hole, makes fixed axle 310 and fixed panel 31 threaded connection, can the up-and-down run-out position, and the installation is dismantled conveniently.

An annular positioning groove 47 is formed between the first threaded hole 46 and the inner wall of the protecting sleeve 41, the pressure spring 42 is inserted into the positioning groove 47, the top of the pressure spring abuts against the positioning groove 47, and the bottom of the pressure spring abuts against the positioning seat 44 to drive the protecting sleeve 41 to return.

The bottom of the stud 36 is provided with a mounting groove 19, the shell is provided with a mounting pin 37 matched with the mounting groove 19, and the stud 36 is clamped with the mounting pin 37 to fix the pressure switch on the shell cover 2.

As shown in fig. 3, 4 and 5, the housing cover 2 includes a left housing 1 and a right housing 11 fixed by screws 14, a limit groove for accommodating the stroke device is formed between the left housing 1 and the right housing 11, and a clamping groove 12 for fixing the stroke adjusting device 4 is provided on an inner wall of the limit groove.

The both sides of cap 2 are equipped with buckle 16 respectively, and the bottom of casing is equipped with the card hole 15 that corresponds with buckle 16 respectively, and 16 joints of buckle are fixed cap 2 and left casing 1 in calorie hole 15, and the installation is dismantled conveniently, is convenient for maintain.

The case cover 2 is provided with lead holes 17 through which the leads 30 of the first connection terminal 34 and the second connection terminal 32 are extended, respectively.

The two sides of the outer part of the shell are respectively provided with a mounting groove 19, and the shell cover 2 is also provided with a fixing hole 18. Can be fixed in the electric appliance through the mounting groove 19, and simultaneously, the screw fixation is tightened through the fixing hole 18 to prevent loosening.

The working process of the invention is as follows:

the abutting of the movable contact piece 33 and the contact piece 35 is controlled according to the stroke adjusting device 4, the on-off of the first connecting terminal 34 and the second connecting terminal 32 is controlled, when the pressure received by the stroke adjusting device 4 is higher than a preset value, the elastic piece moves downwards, the movable contact piece 33 abuts against the contact piece 35, the first connecting terminal 34 is conducted with the second connecting terminal 32, and when the pressure received by the stroke adjusting device 4 is lower than the preset value, the movable contact piece 33 and the contact piece 35 are separated instantly, and the power failure is realized.

Compared with the prior art, the invention comprises a gravity adjusting device and a stroke adjusting device, wherein the gravity adjusting device comprises a pressure switch and a pressure adjusting mechanism in transmission connection with the pressure switch, the top of the pressure switch is connected with a fixed panel, an elastic sheet is arranged between the fixed panel and the pressure switch, a contact piece is arranged below the elastic sheet, and a movable contact piece which is abutted against the contact piece is arranged on the elastic sheet; the pressure adjusting mechanism is in threaded connection with the fixed panel, the bottom of the pressure adjusting mechanism is abutted to the elastic sheet through the first transmission rod, and the snap-through displacement of the elastic sheet is adjusted; the stroke adjusting device comprises a positioning seat and a positioning cover which are connected through threads, a cylindrical protective sleeve is arranged inside the stroke adjusting device, a threaded hole is formed in the protective sleeve, a pressure spring is sleeved outside the threaded hole, an adjusting screw is arranged in the threaded hole, one end of the adjusting screw is provided with a positioning hole, the top end of the second transmission rod is inserted into the positioning hole, the bottom end of the second transmission rod stretches out of the abutting joint of the positioning seat and the elastic piece, and the movable contact piece and the contact piece are adjusted to be switched on and off. The power-off state can be quickly maintained without being influenced by time and temperature after power-off, the installation is convenient, and the service life and the safety are improved.

The present invention is not limited to the above-mentioned preferred embodiments, and any structural changes made under the teaching of the present invention shall fall within the scope of the present invention, which is similar or similar to the technical solutions of the present invention.