CN220895409U - Limit sliding float switch - Google Patents

Abstract

According to the limit sliding type floating ball switch, through the inner side wall of the through hole formed by encircling the first side wall part and the second side wall part and the outer side wall of the shell formed by encircling the third side wall part and the fourth side wall part, the third side wall part corresponds to the first side wall part, the fourth side wall part corresponds to the second side wall part, the third side wall part can be matched with the first side wall part, the fourth side wall part can be matched with the second side wall part, so that the floating ball is assembled on the shell in an oriented mode, through the matched side wall parts, the axial reciprocating motion of the floating ball is limited and the fixed direction is kept, the position and the direction accuracy of the floating ball can be kept on the shell all the time, the limited motion range of the floating ball in the axial direction can be provided, the circumferential rotation of the floating ball on the shell is prevented, and the design is favorable for improving the accuracy and the reliability of the switch, and reducing the risks of false alarm and misoperation.

Description

Limit sliding float switch

Technical Field

The utility model relates to the technical field of liquid level detection, in particular to a limit sliding type float switch.

Background

The float switch is a common trigger type switch device and is commonly used in liquid level detection, flow control and automation systems, the float switch generally comprises a shell and a float, the float is sleeved on the outer side of the shell, the float can reciprocate along the axial direction of the shell, and a limiting structure for limiting the float is not arranged between the float and the shell, so that the float can rotate circumferentially on the shell, the magnetic force induction action device in the shell and the magnet induction in the float can be caused to deviate, and thus, the induction misjudgment or inaccurate switch operation condition is caused.

The utility model is researched and proposed for overcoming the defects of the prior art.

Disclosure of utility model

The floating ball on the floating ball switch in the prior art can circumferentially rotate on the shell, which may cause deviation between a magnetic force induction action device in the shell and magnet induction in the floating ball, thereby causing technical problems of misjudgment of induction or inaccurate switch operation.

The technical scheme adopted for solving the technical problems is as follows:

The utility model provides a spacing slidingtype float switch, includes casing and floater, the floater is the annular structure that the middle part has the through-hole, the outside at the casing is established through the through-hole cover to the floater, the floater can do axial reciprocating motion along the casing, the inside wall of through-hole includes interconnect's first lateral wall portion and second lateral wall portion, the lateral wall of casing includes interconnect's third lateral wall portion and fourth lateral wall portion, third lateral wall portion corresponds with first lateral wall portion, fourth lateral wall portion corresponds with second lateral wall portion, third lateral wall portion can cooperate with first lateral wall portion, fourth lateral wall portion can cooperate with second lateral wall portion to make the floater directional assembly on the casing.

The cross section of the inner side wall of the through hole is similar to or the same as that of the outer side wall of the shell, the third side wall part is similar to or props against the first side wall part, and the fourth side wall part is similar to or props against the second side wall part.

The limit sliding type floating ball switch is characterized in that the first side wall part comprises a first vertical plane side wall, two sides of the second side wall part are connected with the first vertical plane side wall, the third side wall part comprises a third vertical plane side wall, and two sides of the fourth side wall part are connected with the third vertical plane side wall.

The limiting sliding type floating ball switch comprises at least two second vertical plane side walls which are adjacently arranged, wherein the two second vertical plane side walls positioned at the outermost side are respectively connected with two sides of the first vertical plane side wall;

The fourth side wall part comprises at least two adjacently arranged fourth vertical plane side walls, and the two outermost side walls of the fourth vertical plane side walls are respectively connected with two sides of the third vertical plane side wall.

The limit sliding type floating ball switch is characterized in that the magnetic force induction action device is arranged in the shell, the magnet which can be induced by the magnetic force induction action device is arranged in the floating ball, the limiting structure is arranged in the shell, the induction surface of the magnetic force induction action device can be correspondingly arranged with the side wall of the third vertical plane through the limiting structure, the assembling part for assembling the magnet is arranged in the floating ball, and the assembling part is correspondingly arranged with the side wall of the first vertical plane.

The limiting structure comprises the inner side wall of the shell, and the inner side wall of the shell is close to or props against the outer side wall of the magnetic force induction action device.

The limiting sliding type floating ball switch is characterized in that the inner side wall of the shell comprises a fifth side wall part and a sixth side wall part which are connected with each other, the fifth side wall part can be matched with the sixth side wall part to limit the magnetic force induction action device to rotate circumferentially relative to the shell, and the fifth side wall part is arranged corresponding to the third vertical plane side wall.

The cross section of the inner side wall of the shell is similar to or the same as that of the outer side wall of the shell.

The limit sliding type float switch is characterized in that the assembly part is provided with the induction side wall which is arranged corresponding to the first vertical plane side wall, and the magnet is close to or props against the induction side wall.

The limiting sliding type floating ball switch is characterized in that the section shape of the inner side wall of the through hole is polygonal.

The beneficial effects of the utility model are as follows:

1. According to the limit sliding type floating ball switch, through the inner side wall of the through hole formed by encircling the first side wall part and the second side wall part and the outer side wall of the shell formed by encircling the third side wall part and the fourth side wall part, the third side wall part corresponds to the first side wall part, the fourth side wall part corresponds to the second side wall part, the third side wall part can be matched with the first side wall part, the fourth side wall part can be matched with the second side wall part, so that the floating ball is assembled on the shell in an oriented mode, through the matched side wall parts, the axial reciprocating motion of the floating ball is limited and the fixed direction is kept, the position and the direction accuracy of the floating ball can be kept on the shell all the time, the limited motion range of the floating ball in the axial direction can be provided, the circumferential rotation of the floating ball on the shell is prevented, and the design is favorable for improving the accuracy and the reliability of the switch, and reducing the risks of false alarm and misoperation.

2. The cross-sectional shape of the inner side wall of the through hole and the cross-sectional shape of the outer side wall of the shell are polygonal, the polygonal cross-sectional shape of the inner side wall of the through hole can have specific influence on the flow of liquid or gas, and for specific fluid control requirements, the polygonal shape can provide better flow performance, such as resistance reduction, mixing effect increase and the like; the inner side wall of the polygonal through hole has better guiding effect on the floating ball or other moving parts, and can provide a more definite guiding path, so that the floating ball is easier to keep in the center position when moving on the shell; the through-hole inside wall having a polygonal shape can provide better structural stability, and the angular point distribution of different shapes can increase rigidity and supporting ability, thereby reducing deformation and vibration.

3. Through designing the inner side wall of the shell 1 and the outer side wall of the magnetic induction action device 7 to be similar or offset, a physical limiting mechanism can be formed and used for controlling and positioning the movement range of the magnetic induction action device 7 so as to position and assemble the magnetic induction action device 7 in the shell 1, the induction surface of the magnetic induction action device 7 can be opposite to the third vertical plane side wall, the induction surface of the Hall switch on the circuit board is positioned and arranged on the shell, and the action triggering position of the switch is ensured to be accurate and reliable.

4. The assembly part 22 is provided with an induction side wall 221 which is arranged corresponding to the first vertical plane side wall, and the magnet 8 is close to or propped against the induction side wall 221; the design purpose of the induction side wall 221 is to ensure that the magnet can face the induction surface of the magnetic induction action device, and to facilitate the positioning and assembly of the magnet 8; further, the position of the sensing sidewall 221 is designed to correspond to the sensing surface of the magnetic sensing actuation means to provide accurate positioning and matching, and the sensing sidewall 221 helps the magnet 8 to accurately achieve magnetic interaction between them when they are close to the magnetic sensing actuation means; and by locating the magnet 8 near or in contact with the sensing sidewall 221, the sensing effect of the magnetically induced actuation device can be optimized to the maximum and ensure its proper positioning to achieve the desired function.

5. The number of the Hall switches 72 is plural, and the Hall switches are arranged on the circuit board 71 at intervals, so that the multipoint water level detection of the float switch is realized.

The utility model will be further described with reference to the drawings and detailed description.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic side view of the present utility model;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a schematic cross-sectional view taken along line B-B of FIG. 2 (the cross-sectional shape of the via is rectangular);

FIG. 5 is a schematic cross-sectional view of FIG. 2 taken along line B-B (the cross-sectional shape of the via is triangular);

FIG. 6 is a schematic cross-sectional view taken along line B-B of FIG. 2 (the cross-sectional shape of the via is pentagonal);

FIG. 7 is a schematic cross-sectional view taken along line B-B of FIG. 2 (the cross-sectional shape of the through-hole is arcuate);

fig. 8 is a schematic cross-sectional view (the cross-sectional shape of the through hole is arc-shaped) taken along line B-B of fig. 2.

Detailed Description

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 6, the limit sliding type float switch of the embodiment comprises a shell 1 and a float ball 2, wherein the float ball 2 is of an annular structure with a through hole 21 in the middle, the annular structure of the float ball 2 has higher stability and reliability, and due to the annular design, the float ball 2 is easier to control and position during axial movement, so that the accuracy of the switch is further improved;

The floating ball 2 is sleeved on the outer side of the shell 1 through the through hole 21, and the floating ball 2 can do axial reciprocating motion along the shell 1, which means that the floating ball can move up and down in the shell, and is positioned at different positions according to the change of the liquid level;

The inner side wall of the through hole 21 comprises a first side wall part 3 and a second side wall part 4 which are connected with each other, the connection of the side wall parts increases the strength and the stability of the through hole, and the floating ball can be firmly sleeved outside the shell 1;

The outer side wall of the shell 1 comprises a third side wall part 5 and a fourth side wall part 6 which are connected with each other, the third side wall part 5 corresponds to the first side wall part 3, the fourth side wall part 6 corresponds to the second side wall part 4, the third side wall part 5 can be matched with the first side wall part 3, the fourth side wall part 6 can be matched with the second side wall part 4 so that the floating ball 2 is assembled on the shell 1 in an oriented way, the tight connection between the floating ball and the shell is ensured by the strong matching of the third side wall part 5 and the first side wall part 3 and the fourth side wall part 6 and the second side wall part 4, the axial reciprocating movement of the floating ball 2 is limited by the matched side wall parts, and the fixed direction is kept, so that the floating ball 2 can be always kept in a correct position on the shell 1 and is not influenced by external factors;

The design of the limit sliding type floating ball switch ensures the accuracy of the position and the direction of the floating ball 2 by being fixed on the shell 1 through the matching of the side wall parts, can provide the limited movement range of the floating ball in the axial direction and prevent the floating ball from rotating in the circumferential direction on the shell, and is beneficial to improving the accuracy and the reliability of the switch and reducing the risks of false alarm and misoperation.

As shown in fig. 1 to 6, the sectional shape of the inner side wall of the through hole 21 of the present embodiment is similar or identical to the sectional shape of the outer side wall of the housing 1, and the third side wall portion 5 is similar or abutted against the first side wall portion 3, and the fourth side wall portion 6 is similar or abutted against the second side wall portion 4, which means that the shapes of these wall portions, whether the sectional shapes or the approximate shapes, are similar or almost identical.

The similar or identical cross-sectional shape and configuration of the wall portion help to maintain stability and positioning of the ball, and by making the inner side wall of the through hole 21 close to or identical to the outer side wall of the housing 1, it is possible to ensure a stable contact surface between the ball and the housing when it reciprocates in the axial direction, so as to limit the ball from rotating circumferentially on the housing.

In addition, the third side wall part 5 is close to or props against the first side wall part 3, the fourth side wall part 6 is close to or props against the second side wall part 4, so that the accurate positioning of the floating ball on the shell can be ensured, the similar or props against cooperation can provide accurate position control between the floating ball and the shell, the floating ball can accurately perform axial movement on the shell, position deviation or circumferential rotation is not easy to occur, and the accuracy of sensing is ensured.

Such design features are important for proper operation of the float switch because they ensure accuracy of the float, stability of movement, and accuracy of switch assembly, which further improves the performance and reliability of the switch, and is suitable for various fluid level detection and flow control applications.

As shown in fig. 1 to 6, the first sidewall 3 of the present embodiment includes a first vertical planar sidewall, and both sides of the second sidewall 4 are connected to the first vertical planar sidewall, and enclose an inner sidewall forming a through hole;

The third side wall part 5 comprises a third vertical plane side wall, two sides of the fourth side wall part 6 are connected with the third vertical plane side wall, and the outer side wall of the shell is formed by enclosing;

by adopting the design, two cross-section structures with vertical plane side walls are formed, and mainly used for creating a stable structure and providing accurate positioning and movement limitation for the floating ball, specifically, the connection between the first vertical plane side wall and the second side wall part and the connection between the third vertical plane side wall and the fourth side wall part enable the axial movement of the floating ball in the shell to be controlled, so that the floating ball can accurately move up and down on the shell only in a specific range, unnecessary swing or rotation of the floating ball is avoided, the stability of the floating ball switch is increased, and the floating ball switch can be accurately operated under different liquid level conditions;

through the arrangement of the vertical plane side walls, when the floating ball is on the shell, the first vertical plane side wall and the third vertical plane side wall are close or offset, when the floating ball moves on the shell, the floating ball can axially move on the shell along the third vertical plane side wall through the first vertical plane side wall, the limiting sliding type floating ball switch can ensure that the motion track of the floating ball is vertical, and the floating ball can keep a substantially horizontal state on the shell along with the change of the water level;

by keeping the floating ball horizontal, the accurate correspondence of the position of the floating ball and the liquid level can be ensured, so that accurate liquid level detection and control are realized, the two vertical plane side walls provide support and positioning for the floating ball, so that the floating ball moves in the vertical direction in the shell and keeps a stable horizontal state, the design ensures the consistency of the floating ball and the change of the external liquid level, and an accurate detection result is provided;

in addition, the design scheme of adopting vertical plane lateral wall makes the casing compacter, has simplified the process of making and installing, and the advantage of this kind of design structure includes that stability is improved, accurate location floater and be convenient for maintain and operation, the assembly and the location of the floater switch of being convenient for make it can accurately match with the casing and keep stable position.

As shown in fig. 1 to 6, the second side wall portion 4 of the present embodiment includes at least two adjacently disposed second vertical plane side walls 41, and two of the second vertical plane side walls 41 located at the outermost side are respectively connected to both sides of the first vertical plane side wall;

The fourth side wall part 6 comprises at least two fourth vertical plane side walls 61 adjacently arranged, and the two fourth vertical plane side walls 61 positioned at the outermost side are respectively connected with the two sides of the third vertical plane side wall;

By adopting the design, a firmer shell support can be provided, the floating ball is ensured to have good positioning and limiting functions in the up-and-down motion process, the stability of the shell to the position of the floating ball is enhanced through the vertical plane side walls which are adjacently connected, the up-and-down motion track of the floating ball in the shell is ensured to be vertical, and the position of the floating ball is limited.

As shown in fig. 1 to 6, a magnetic induction action device 7 is disposed in a housing 1 of the present embodiment, a magnet 8 capable of being induced by the magnetic induction action device 7 is disposed in the float ball 2, a limit structure 9 is disposed in the housing 1, the limit structure 9 can enable an induction surface of the magnetic induction action device 7 to be disposed corresponding to a third vertical plane side wall, an assembly portion 22 for assembling the magnet 8 is disposed in the float ball 2, and the assembly portion 22 is disposed corresponding to the first vertical plane side wall, so that the magnet 8 is opposite to the induction surface of the magnetic induction action device 7;

When the floating ball 2 ascends or descends, the position of the magnet 8 also changes, so that the sensing condition of the magnetic force sensing action device 7 is changed, the association detection of the floating ball and the water level can be realized through the sensing of the sensing device, and the corresponding action or control is triggered.

The arrangement of the limit structure 9 can ensure that the sensing surface of the magnetic force sensing action device 7 is correctly aligned with the third vertical plane side wall, and the assembly part 22 is correspondingly arranged with the first vertical plane side wall, so that the magnet 8 in the floating ball 2 is ensured to be opposite to the sensing surface of the magnetic force sensing action device 7, thereby providing accurate sensing signals and realizing accurate switch control.

As shown in fig. 1 to 6, the limiting structure 9 of the present embodiment includes an inner sidewall of the housing 1, where the inner sidewall of the housing 1 is close to or abuts against an outer sidewall of the magnetic force induction action device 7;

By designing the inner side wall of the shell 1 and the outer side wall of the magnetic induction action device 7 to be similar or offset, a physical limiting mechanism can be formed and used for controlling and positioning the movement range of the magnetic induction action device 7 so as to position and assemble the magnetic induction action device 7 in the shell 1, the induction surface of the magnetic induction action device 7 can be opposite to the third vertical plane side wall, and the accurate and reliable action triggering position of the switch is ensured.

And need not to design additional location spare part in casing 1 and fix a position magnetic force induction action device 7, reduce float switch's manufacturing cost and design degree of difficulty.

As shown in fig. 1 to 6, the inner side wall of the housing 1 of the present embodiment includes a fifth side wall portion 91 and a sixth side wall portion 92 connected to each other, the fifth side wall portion 91 being capable of cooperating with the sixth side wall portion 92 to restrict the magnetic force induction action device 7 from rotating circumferentially relative to the housing 1, the fifth side wall portion 91 being provided in correspondence with the third vertical plane side wall;

By means of the design, the magnetic induction action device 7 can be ensured to move in the shell 1 to be limited, the magnetic induction action device 7 cannot freely rotate circumferentially due to the cooperation of the fifth side wall part 91 and the sixth side wall part 92, and the movement range of the magnetic induction action device can be further controlled and limited in the vertical direction due to the fact that the fifth side wall part 91 is arranged corresponding to the third vertical plane side wall.

Through limit structure's design, can ensure that the magnetic force induction action device is in the correct and stable of position in casing 1 to realize reliable on-off control, this kind of structure can provide extra limit function, in order to ensure switch system's work effect and stability.

As shown in fig. 1 to 6, the sectional shape of the inner side wall of the housing 1 of the present embodiment is similar to or the same as the sectional shape of the outer side wall of the housing 1;

Such design choices may ensure that the inner and outer side walls of the housing 1 have similar shapes, which may provide the housing with better structural stability and mechanical strength, or similar cross-sectional shapes may provide for a more uniform force transfer throughout the housing, thereby reducing the risk of localized stress concentrations and increasing overall rigidity;

Further, by making the cross-sectional shape of the inner side wall of the housing similar or identical to the outer side wall, structural uniformity of the entire housing can be achieved, which contributes to an improvement in the efficiency of the manufacturing process.

Further, by ensuring that the cross-sectional shape of the inner side wall of the housing 1 is similar or identical to the outer side wall, the overall rigidity of the housing 1 may be increased and better support and restraint provided for other critical components, which also helps to ensure stability and reliability of the system.

As shown in fig. 1 to 6, the assembly portion 22 of the present embodiment is provided with a sensing sidewall 221 corresponding to the first vertical plane sidewall, and the magnet 8 is close to or abuts against the sensing sidewall 221;

The design purpose of the sensing sidewall 221 is to ensure that the magnet is facing the sensing surface of the magnetic sensing actuation device and to facilitate positioning assembly of the magnet 8.

Further, the position of the sensing sidewall 221 is designed to correspond to the sensing surface of the magnetic sensing actuation means to provide accurate positioning and matching, and the sensing sidewall 221 helps the magnet 8 to accurately achieve magnetic interaction between them when they are close to the magnetic sensing actuation means;

And by locating the magnet 8 near or in contact with the sensing sidewall 221, the sensing effect of the magnetically induced actuation device can be optimized to the maximum and ensure its proper positioning to achieve the desired function.

As shown in fig. 1 to 6, the cross-sectional shape of the inner side wall of the through hole 21 of the present embodiment is polygonal;

Preferably, in this embodiment, the cross-sectional shape of the inner side wall of the through hole 21 is rectangular, the cross-sectional shape of the outer side wall of the housing 1 is rectangular, the rectangular through hole inner side wall can provide a larger contact area and stability, and the rectangular housing outer side wall can also provide better structural stability and assembly property;

Stability: the rectangular cross-sectional shape provides a larger contact area so that the float ball can move more stably on the housing, reducing sloshing and rocking.

Guidance properties: the rectangular through hole and the shell provide a guiding effect, so that the position of the floating ball in the shell is more accurate, the floating ball is easier to keep at the center of the through hole in the moving process, and deviation or clamping is avoided;

such design choices make the structure of through-hole and casing unanimous to can satisfy the application demand effectively. The matching between the rectangular shape of the through hole and the rectangular shape of the outer side wall of the shell can effectively improve the assembly efficiency and quality.

In other embodiments, the cross-sectional shape of the inner sidewall of the through hole 21 may be triangular, pentagonal, hexagonal, or other polygonal,

Possible advantages of the embodiment in which the cross-sectional shape of the inner side wall of the through hole is polygonal:

Fluidity: the shape of the inner side walls of the polygonal through holes may have a specific effect on the flow of liquid or gas. The polygonal shape may provide better flow properties, such as reduced drag, increased mixing effects, etc., for specific fluid control requirements.

Guidance properties: the polygonal through hole inner side wall may have a better guiding effect on the floating ball or other moving parts. It provides a more definite guiding path, so that the floating ball is easier to keep in a central position when moving on the housing.

Structural stability: the through-hole inner side wall having a polygonal shape can provide better structural stability. The distribution of corner points of different shapes may increase rigidity and support capacity, thereby reducing deformation and vibration.

Specifically, the third vertical plane lateral wall, the fourth vertical plane lateral wall, the first vertical plane lateral wall and the second vertical plane lateral wall are polygonal side edges, the polygonal shape can provide stability and strength of the structure more than the linear shape, and the rigidity of the shell can be increased due to the distribution of edges and angles, so that the overall structural strength is improved.

Further, the polygonal side walls provide a more definite limiting effect, and the distribution of corners can define the movement range of the floating ball or other moving parts, so that the floating ball or other moving parts cannot exceed a specific area.

Further, the polygonal side wall can increase the structural stability of the housing and prevent the floating ball or other components from unstable or shaking during limiting.

Furthermore, the polygonal side wall can prevent the floating ball or other parts from being clamped or clamped at a specific position during limiting, and the distribution of corners can provide better guidance, so that the floating ball can move smoothly during limiting.

As shown in fig. 7, in other embodiments, the cross-sectional shape of the inner side wall of the through hole 21 is arched, the cross-sectional shape of the outer side wall of the housing is similar to or the same as the cross-sectional shape of the inner side wall of the through hole 21, the first side wall portion 3 is a first vertical plane side wall, the second side wall portion 4 includes a second arc-shaped side wall 42 and second vertical plane side walls 41 disposed at two ends of the arc-shaped side wall, and the other ends of the two vertical plane side walls 41 are respectively connected with two sides of the first vertical plane side wall, so as to form the inner side wall of the through hole 21 with an arch shape;

The third side wall part 5 is a third vertical plane side wall, the fourth side wall part 6 comprises a fourth arc-shaped side wall 62 and fourth vertical plane side walls 61 arranged at two ends of the fourth arc-shaped side wall 62, and the other ends of the two fourth vertical plane side walls 61 are respectively connected with two sides of the third vertical plane side wall, so that an arch-shaped outer side wall of the shell 1 is formed;

The inner side wall of the arch-shaped through hole and the similar or same outer side wall can provide smooth surfaces, and the resistance and friction of the floating ball when moving on the shell are reduced. This helps to enable the float to move smoothly on the housing without the need for additional application of significant force;

The shape of the inner side wall of the through hole in the arch shape and the shape of the outer side wall of the shell which are similar or identical can provide a linear guiding effect, so that the floating ball can be accurately positioned on the shell, which is very important for the application needing to accurately control the position of the floating ball.

The arch-shaped shell and the through hole inner side wall design can reduce the risk that the floating ball is blocked or clamped at a specific position in the moving process. The arcuate surface helps the float to pass smoothly through the aperture without trapping sharp edges or corners.

As shown in fig. 8, in other embodiments, the cross-sectional shape of the inner sidewall of the through hole 21 is arc-shaped, preferably, the cross-sectional shape of the inner sidewall of the through hole 21 is half arc-shaped;

The first sidewall 3 is a first vertical plane sidewall, the second sidewall 4 is a second arc sidewall 42, and two sides of the second arc sidewall 42 are respectively connected with two sides of the first vertical plane sidewall, so as to form an arc-shaped inner sidewall of the through hole 21;

The third side wall part 5 is a third vertical plane side wall, the fourth side wall part 6 is a fourth arc side wall 62, and two sides of the fourth arc side wall 62 are respectively connected with two sides of the third vertical plane side wall, so as to form an arc-shaped outer side wall of the shell 1; the inner side wall of the arc-shaped through hole and the similar or identical outer side wall can provide a smooth curved surface, so that friction and resistance of the floating ball when the floating ball moves on the shell are reduced, the floating ball can move on the shell in a smoother mode, and energy loss is reduced.

Further, the semi-arcuate through hole inner side wall and the similar or identical housing outer side wall shape provide a linear guiding effect that helps to accurately position the float ball on the housing so that it can move accurately within a predetermined range of motion.

Further, the arc-shaped shell and the inner side wall of the through hole can reduce the probability that the floating ball is blocked or trapped at a specific position in the moving process, and the arc-shaped surface enables the floating ball to pass through the through hole more freely, so that the blocking at a sharp corner or edge is avoided.

Specifically, in this embodiment, the cross-sectional shape of the inner cavity of the housing 1 formed by enclosing the fifth side wall portion 91 and the sixth side wall portion 92 is similar to or the same as the cross-sectional shape of the outer side wall of the housing 1, that is, the cross-sectional shape of the inner cavity of the housing 1 is also polygonal, preferably, the magnetic force induction actuating device 7 includes a circuit board 71 and a hall switch 72 disposed on the circuit board 71, the inner cavity of the polygonal housing 1 can better limit the plate-shaped circuit board 71, the side wall of the inner cavity of the polygonal housing 1 can provide an accurate positioning boundary, so as to ensure that the circuit board 71 is correctly placed at a desired position, and different corner distributions can provide accurate limiting points for the circuit board and prevent the circuit board from being dislocated or swayed in the moving process.

Further, the polygonal inner cavity of the housing can provide better structural stability, and the distribution of the corners can increase the rigidity of the housing, and ensure that the circuit board 71 is stable during limiting, and prevent deformation or uneven stress.

Further, the number of the hall switches 72 is plural, and the hall switches are disposed on the circuit board 71 at intervals, so as to realize the multipoint water level detection of the float switch.

The foregoing examples are provided to further illustrate the technical contents of the present utility model for the convenience of the reader, but are not intended to limit the embodiments of the present utility model thereto, and any technical extension or re-creation according to the present utility model is protected by the present utility model. The protection scope of the utility model is subject to the claims.

Claims (10)

1. Limiting sliding type float switch, its characterized in that: including casing (1) and floater (2), floater (2) are the annular structure that the middle part has through-hole (21), floater (2) are established in the outside of casing (1) through-hole (21) cover, floater (2) can do axial reciprocating motion along casing (1), the inside wall of through-hole (21) includes interconnect's first lateral wall portion (3) and second lateral wall portion (4), the lateral wall of casing (1) includes interconnect's third lateral wall portion (5) and fourth lateral wall portion (6), third lateral wall portion (5) are corresponding with first lateral wall portion (3), fourth lateral wall portion (6) are corresponding with second lateral wall portion (4), third lateral wall portion (5) can be with first lateral wall portion (3) cooperation, fourth lateral wall portion (6) can with second lateral wall portion (4) cooperation to make floater (2) directional assembly on casing (1).

2. The limit sliding float switch of claim 1, wherein: the cross-sectional shape of the inner side wall of the through hole (21) is similar to or the same as the cross-sectional shape of the outer side wall of the shell (1), the third side wall part (5) is similar to or props against the first side wall part (3), and the fourth side wall part (6) is similar to or props against the second side wall part (4).

3. The limit sliding float switch of claim 2 wherein: the first side wall part (3) comprises a first vertical plane side wall, two sides of the second side wall part (4) are connected with the first vertical plane side wall, the third side wall part (5) comprises a third vertical plane side wall, and two sides of the fourth side wall part (6) are connected with the third vertical plane side wall.

4. A limit sliding float switch according to claim 3, wherein: the second side wall part (4) comprises at least two second vertical plane side walls (41) which are adjacently arranged, and the two second vertical plane side walls (41) positioned at the outermost side are respectively connected with the two sides of the first vertical plane side wall;

The fourth side wall part (6) comprises at least two adjacently arranged fourth vertical plane side walls (61), and the two outermost side of the fourth vertical plane side walls (61) are respectively connected with two sides of the third vertical plane side wall.

5. A limit sliding float switch according to claim 3, wherein: be equipped with magnetic force induction action device (7) in casing (1), be equipped with in floater (2) magnet (8) that can respond to with magnetic force induction action device (7), be equipped with limit structure (9) in casing (1), limit structure (9) can make the response face of magnetic force induction action device (7) set up with the vertical plane lateral wall of third correspondence, be equipped with in floater (2) assembly portion (22) that are used for assembling magnet (8), assembly portion (22) set up with the vertical plane lateral wall of first correspondence.

6. The limit sliding float switch of claim 5, wherein: the limiting structure (9) comprises an inner side wall of the shell (1), and the inner side wall of the shell (1) is close to or propped against the outer side wall of the magnetic force induction action device (7).

7. The limit sliding float switch of claim 6, wherein: the inner side wall of the shell (1) comprises a fifth side wall part (91) and a sixth side wall part (92) which are connected with each other, the fifth side wall part (91) can be matched with the sixth side wall part (92) to limit the magnetic force induction action device to circumferentially rotate relative to the shell (1), and the fifth side wall part (91) is correspondingly arranged with the third vertical plane side wall.

8. The limit sliding float switch of claim 6, wherein: the section shape of the inner side wall of the shell (1) is similar to or the same as the section shape of the outer side wall of the shell (1).

9. The limit sliding float switch of claim 5, wherein: the assembly part (22) is provided with an induction side wall (221) which is arranged corresponding to the first vertical plane side wall, and the magnet (8) is close to or props against the induction side wall (221).

10. The limit sliding float switch of any one of claims 1 to 9, wherein: the cross section of the inner side wall of the through hole (21) is polygonal.