CN113628925A

CN113628925A - Induction switch

Info

Publication number: CN113628925A
Application number: CN202010371074.1A
Authority: CN
Inventors: 周添铭
Original assignee: Dari Technology Co ltd
Current assignee: Dari Technology Co ltd
Priority date: 2020-05-06
Filing date: 2020-05-06
Publication date: 2021-11-09

Abstract

An inductive switch includes a base unit, a switch unit, and a conduction unit. The base unit is formed by stacking and sintering a plurality of ceramic green layers and comprises a bottom layer group, a top layer group and a surrounding layer group. The bottom layer group, the top layer group and the surrounding layer group define an accommodating space. One of the bottom layer group, the top layer group and the surrounding layer group is provided with a first mounting surface. The switch unit includes a light emitting element, a light receiving element, and a rolling element capable of freely rolling to change the light receiving amount of the light receiving element. The conducting unit comprises at least one power supply section and a signal section. The at least one power supply section can supply power to the light emitting part and the light receiving part. The at least one power supply section has a first power supply region. The signal segment has a first signal region. By sintering a plurality of ceramic raw germ layers to form the base unit, the volume of the induction switch can be reduced, so that the induction switch can be applied to products with smaller volumes.

Description

Induction switch

Technical Field

The present invention relates to a switch device, and more particularly, to an inductive switch.

Background

An existing inductive switch comprises a shell seat, a shell cover matched with the shell seat, an accommodating space defined by the shell seat and the shell cover, and a light emitting piece, a light receiving piece and a ball arranged in the accommodating space.

The accommodating space comprises an emitting area for the light emitting piece to be arranged, a receiving area which is opposite to the emitting area and is used for the light receiving piece to be arranged, and a rolling area which is located between the emitting area and the receiving area and is used for the balls to be arranged in a rolling mode.

When the ball bearing is acted by external force, the ball bearing can roll in the rolling area to shield or open the light path between the light emitting piece and the light receiver so as to form an open circuit or a conducting loop.

However, the conventional inductive switch is large in volume, and thus, the product volume of the application is limited. In addition, the conventional inductive switch requires a complicated process of assembling wiring during manufacturing, and thus, needs to be improved.

Disclosure of Invention

It is an object of the present invention to provide an inductive switch that addresses at least one of the disadvantages of the prior art.

The inductive switch of the invention comprises a base unit. The inductive switch also comprises a switch unit and a conduction unit. The base body unit is formed by stacking and sintering a plurality of ceramic green body layers and comprises a bottom layer group, a top layer group and a surrounding layer group, wherein the top layer group is spaced from the bottom layer group, and the surrounding layer group is arranged between the peripheries of the bottom layer group and the top layer group. The bottom layer group, the top layer group and the surrounding layer group define an accommodating space. One of the bottom layer group, the top layer group and the surrounding layer group is provided with a first mounting surface which is relatively far away from the accommodating space and is positioned on the outer side. The switch unit is arranged in the accommodating space and comprises a light emitting piece capable of emitting a light beam, a light receiving piece capable of receiving the light beam and generating a signal, and a rolling piece which is positioned between the light emitting piece and the light receiving piece and can freely roll to change the light receiving amount of the light receiving piece. The conduction unit is arranged on the base body unit, is made of metal materials, and comprises at least one power supply section and a signal section capable of transmitting signals sent by the light receiving part. The at least one power supply section can supply power to the light emitting part and the light receiving part. The at least one power supply section has a first power supply region located on the first mounting surface. The signal section is provided with a first signal area positioned on the first mounting surface.

In the inductive switch of the invention, the other one of the bottom layer group, the top layer group and the surrounding layer group of the base unit is provided with the second mounting surface which is relatively far away from the accommodating space and is positioned at the outer side. The at least one power supply section also has a second power supply region located on the second mounting surface. The signal section also has a second signal area located on the second mounting surface.

In the inductive switch of the invention, the other of the bottom layer group, the top layer group and the surrounding layer group of the base unit is provided with the third mounting surface which is relatively far away from the accommodating space and is positioned at the outer side. The at least one power supply section has a third power supply region located at the third mounting surface portion. The signal section has a third signal region located at the third mounting surface portion.

In the inductive switch of the present invention, the conducting unit further includes a grounding section connected to the light emitting member. The grounding section is provided with a first grounding area positioned on the first mounting surface, a second grounding area positioned on the second mounting surface, and a third grounding area positioned on the third mounting surface.

In the inductive switch of the invention, the light beam emitted by the light emitting member extends along the emission axis. The rolling member of the switch unit is made of opaque material and can roll between a disconnection position and a connection position relative to the light emitting member. When the light emitting element is in the off position, the rolling element corresponds to the emitting axis and can block the light receiving element from receiving the light beam emitted by the light emitting element. In the passage position, the rolling member is offset from the emission axis and allows the light receiving member to receive the light beam emitted from the light emitting member.

According to the inductive switch, the accommodating space is provided with the transmitting area and the receiving area which are arranged oppositely along the transmitting axis, and the rolling area which is arranged between the transmitting area and the receiving area. The rolling area is in a cone shape with a wide upper part and a narrow lower part. The light emitting member is disposed in the emitting region. The light receiving part is arranged in the receiving area. The rolling member is rollably disposed to the rolling area.

In the inductive switch of the invention, the light beam emitted by the light emitting member extends along the emission axis. The rolling piece of the switch unit is made of light-transmitting materials. The rolling member is capable of rolling between a first position and a second position relative to the light emitting member. In the first position, the rolling member corresponds to the firing axis. In the second position, the rolling member rolls to a position different from the first position.

According to the inductive switch, the accommodating space is provided with the transmitting area and the receiving area which are arranged oppositely along the transmitting axis, and the rolling area which is arranged between the transmitting area and the receiving area. The rolling area is spherical and has a diameter larger than the diameter of the rolling member. The light emitting member is disposed in the emitting region. The light receiving part is arranged in the receiving area. The rolling member is rollably disposed to the rolling area.

In the inductive switch of the invention, the bottom layer group of the base body unit is provided with a bottom connecting surface connected with the surrounding layer group. The top tier group has a top connection face connecting the surrounding tier groups. At least one power supply section of the conduction unit is also provided with a power supply connecting part which is made of metal materials and is arranged on one of the bottom connecting surface and the top connecting surface. The signal section is provided with a signal connecting part which is made of metal materials and is arranged on one of the bottom connecting surface and the top connecting surface.

In the inductive switch, at least one of the bottom layer group and the top layer group of the base body unit is connected with the surrounding layer group into a whole through the adhesive material after the rolling piece is placed in the accommodating space.

The invention has the beneficial effects that: by sintering a plurality of ceramic raw germ layers to form the base unit, the volume of the induction switch can be reduced, so that the induction switch can be applied to products with smaller volumes.

Drawings

FIG. 1 is a perspective assembly view of a first embodiment of an inductive switch of the present invention;

fig. 2 is an exploded perspective view of a base unit, a conduction unit, a light emitting element, and a light receiving element of the first embodiment;

FIG. 3 is a schematic perspective view of the first embodiment;

FIG. 4 is a schematic cross-sectional view taken along line IV-IV of FIG. 1;

FIG. 5 is a perspective assembly view of a second embodiment of the inductive switch of the present invention;

fig. 6 is an exploded perspective view of a base unit, a conduction unit, a light emitting element, and a light receiving element of the second embodiment;

FIG. 7 is a schematic cross-sectional view taken along line VII-VII of FIG. 5;

FIG. 8 is a schematic cross-sectional view taken along line VIII-VIII of FIG. 5;

fig. 9 is an exploded perspective view of a base unit, a conduction unit, a light emitting element, and a light receiving element of a third embodiment of the induction switch of the present invention;

fig. 10 is a perspective assembly view of a fourth embodiment of the inductive switch of the present invention;

fig. 11 is an exploded perspective view of a base unit, a conduction unit, a light emitting element, and a light receiving element of the fourth embodiment;

FIG. 12 is a schematic cross-sectional view taken along line XII-XII of FIG. 10;

fig. 13 is a perspective assembly view of a fifth embodiment of the inductive switch of the present invention;

fig. 14 is an exploded perspective view of a base unit, a conduction unit, a light emitting element, and a light receiving element of the fifth embodiment;

FIG. 15 is a schematic cross-sectional view taken along line XV-XV of FIG. 13.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and examples.

Before the present invention is described in detail, it should be noted that in the following description, similar components are denoted by the same reference numerals.

Referring to fig. 1, 2 and 3, the first embodiment of the inductive switch of the present invention is suitable for connecting a circuit board 1. The inductive switch comprises a base unit 2, a switch unit 3 and a conducting unit 4. A left-right axis direction X, a front-rear axis direction Y, and an up-down axis direction Z are defined perpendicular to each other.

Referring to fig. 1, 2 and 4, the base unit 2 is made by stacking and sintering a plurality of ceramic green sheets 200, and includes a bottom layer group 21, a top layer group 22 spaced from the bottom layer group 21 along the up-down axial direction Z, and a surrounding layer group 23 disposed between the bottom layer group 21 and the periphery of the top layer group 22. The bottom layer group 21, the top layer group 22 and the surrounding layer group 23 define an accommodating space 24.

The bottom layer group 21 has a bottom connection surface 211 connected to the surrounding layer group 23, and a first mounting surface 212 located outside and relatively far away from the accommodating space 24 and opposite to the bottom connection surface 211.

The top group 22 has a top connection surface 221 connected to the surrounding group 23, and a second mounting surface 222 located outside and relatively far away from the accommodating space 24 and opposite to the top connection surface 221.

The surrounding layer group 23 has an inner surrounding surface 231 surrounding the accommodating space 24, and an outer surrounding surface 232 opposite to the inner surrounding surface 231 and relatively far away from the accommodating space 24. The outer surrounding surface 232 has a third mounting surface portion 233.

In terms of the layered structure, the bottom layer group 21, the top layer group 22, and the surrounding layer group 23 are made of at least one ceramic raw germ layer 200. In the present embodiment, the layered structure of the bottom layer group 21 is made of one ceramic raw germ layer 200, the layered structure of the top layer group 22 is made of one ceramic raw germ layer 200, the layered structure of the surrounding layer group 23 is made of thirteen ceramic raw germ layers 200, but not limited thereto, and the ceramic raw germ layers 200 are made of inorganic ceramics.

It should be noted that the ceramic raw germ layers 200 of the surrounding layer group 23 are integrated after sintering, however, for the sake of clarity of the disclosure of the layered structure of the surrounding layer group 23, all drawings except fig. 3 in the present specification indicate the outline of each of the ceramic raw germ layers 200.

The accommodating space 24 has an emitting region 241 and a receiving region 242 oppositely arranged along the emitting axis L, and a rolling region 243 between the emitting region 241 and the receiving region 242. In the present embodiment, the emitting axis L extends along the up-down axis Z, the emitting area 241 is adjacent to the bottom layer group 21, and the rolling area 243 is in a cone shape with a wide top and a narrow bottom.

The switch unit 3 is disposed in the accommodating space 24, and includes a light emitting element 31 capable of emitting a light beam extending along the emitting axis L and disposed in the emitting region 241, a light receiving element 32 capable of receiving the light beam and generating a signal and disposed in the receiving region 242, and a rolling element 33 disposed between the light emitting element 31 and the light receiving element 32 and rollably disposed in the rolling region 243 to change the amount of light received by the light receiving element 32. In this embodiment, the rolling member is a ball.

The rolling member 33 is made of a light-impermeable material and can roll between an open position and a closed position with respect to the light emitting member 31. In the open position (see the solid line position of the roller 33 in fig. 4), the roller 33 corresponds to the emission axis L and blocks the light receiving element 32 from receiving the light beam emitted by the light emitting element 31. In the passage position (see the imaginary line position of the rolling member 33 in fig. 4), the rolling member 33 is offset from the emission axis L and allows the light receiving element 32 to receive the light beam emitted from the light emitting element 31.

The conducting unit 4 is disposed on the base unit 2 and made of a metal material, and includes a power supplying section 41, a signal section 42 capable of transmitting a signal from the light receiving part 32, and a ground section 43 connected to the light emitting part 31.

The power supply section 41 connects the light emitting element 31 and the light receiving element 32 and can supply power to the light emitting element 31 and the light receiving element 32. The power supply section 41 has two power supply installation parts 412 which are made of metal materials and are respectively arranged on the bottom connecting surface 211 and the top connecting surface 221 and respectively supply power to the light emitting element 31 and the power supply connecting part 411 of the light receiving element 32, and one part of the power supply installation part is arranged on the outer surrounding surface 232 and is connected with the power supply connecting part 411. The power supply mounting portion 412 has a first power supply region 413 on the first mounting surface 212, a second power supply region 414 on the second mounting surface 222, and a third power supply region 415 on the third mounting surface 233.

The signal section 42 has a signal connection portion 421 made of a metal material and disposed on the top connection surface 221 and wire-bonded to the light receiving element 32, and a signal mounting portion 422 partially disposed on the outer surrounding surface 232 and connected to the signal connection portion 421. The signal mounting portion 422 has a first signal region 423 located on the first mounting surface 212, a second signal region 424 located on the second mounting surface 222, and a third signal region 425 located on the third mounting surface 233.

The grounding section 43 has a grounding connection portion 431 made of a metal material and disposed on the bottom connection surface 211 and wire-bonded to the light emitting element 31, and a grounding mounting portion 432 partially disposed on the outer circumferential surface 232 and connected to the grounding connection portion 431. The ground mounting portion 432 has a first ground area 433 on the first mounting surface 212, a second ground area 434 on the second mounting surface 222, and a third ground area 435 on the third mounting surface 233.

The manufacturing process of the inductive switch is described as follows:

firstly, forming corresponding holes in the corresponding ceramic raw rubber layer 200 by machining, and disposing metal materials (such as silver, copper, gold, etc.) at the corresponding positions of the ceramic raw rubber layer 200 to form the power supply connection portion 411, the signal connection portion 421, and the ground connection portion 431. The technique of disposing the metal material on the ceramic raw germ layer 200 may be achieved by using a conductive adhesive in a form of a screen, a steel plate, ink jet, or the like, or in a form of electroplating, chemical plating, sputtering, or the like, or at least two of the foregoing forms.

And secondly, stacking the corresponding ceramic raw germinal layers 200, and tightly compacting the ceramic raw germinal layers 200 in a pressure-equalizing manner.

And step three, cutting the tightly compacted ceramic green sheets 200 into preset sizes.

And step four, plating, spraying or coating metal materials (such as gold, alloy and the like) on the surfaces of the power supply connecting part 411, the signal connecting part 421 and the ground connecting part 431 as required.

And step five, raising the ambient temperature by using a slow temperature raising rate to burn out and crack the high molecular additive added in the ceramic raw germ layer 200 during pulping, then raising the temperature to densify the ceramic raw germ layer 200 and remove pores, and sintering the corresponding ceramic raw germ layer 200 into a whole to form the surrounding layer group 23.

Sixthly, the rolling member 33 is placed in the accommodating space 24, the light emitting element 31 and the light receiving element 32 are respectively arranged on the bottom layer group 21 and the top layer group 22 and are respectively bonded to the grounding connection portion 431 and the signal connection portion 421 by wire bonding, an adhesive material (such as resin, glass and the like) is coated on the connection portion of the top layer group 22 and the surrounding layer group 23 and the connection portion of the surrounding layer group 23 and the bottom layer group 21, the top layer group 22 and the surrounding layer group 23 are pressed and bonded into a whole to form the base unit 2.

Seventhly, a metal material (such as silver, copper, gold, and the like) is plated, sprayed, or coated on the outer circumferential surface of the base unit 2 to form the power supply mounting part 412, the signal mounting part 422, and the ground mounting part 432, and the ambient temperature is raised to densify the power supply mounting part 412, the signal mounting part 422, and the ground mounting part 432, so that the power supply mounting part 412, the signal mounting part 422, and the ground mounting part 432 have good conductivity on the side connected to the base unit 2 and the side opposite to the base unit 2.

The inductive switch can be completed through the steps from one to seven.

Referring to fig. 2, 3 and 4, in an application, a user (not shown) may dispose the circuit board 1 on the first mounting surface 212, the second mounting surface 222, or the third mounting surface 233 as shown in fig. 3, and electrically connect the corresponding first power supply region 413, the second power supply region 414, the third power supply region 415, the corresponding first signal region 423, the second signal region 424, the third signal region 425, and the corresponding first ground region 433, the second ground region 434, and the third ground region 435 to the circuit board 1.

Since the rolling member 33 is freely rollably disposed on the rolling area 243, when the sensor switch is tilted, the rolling member 33 rolls in the rolling area 243 under the action of gravity and rolls between the off position and the on position to change the light receiving amount of the light receiving element 32 to control the signal generated by the light receiving element 32.

For example, when the inductive switch is horizontal, the rolling member 33 will roll to the solid line position (i.e. the off position) of fig. 4 to block the light receiving element 32 from receiving the light beam emitted by the light emitting element 31. When the inductive switch is tilted downward toward the right side of fig. 4, the rolling member 33 will roll to the imaginary line position of fig. 4 to reach the passage position, so that the light receiving element 32 can receive the light beam emitted from the light emitting element 31.

Since the light receiving element 32 can generate signals according to the received light beams, the inductive switch can be judged to be horizontal or inclined through different signals generated by the light receiving element 32, so as to perform the power-off protection function or give an alarm, and therefore, the inductive switch can be used as a full-circle type angle switch.

In this way, the inductive switch is formed by sintering a plurality of ceramic green sheets 200 to form the base unit 2, and the power supply connection portion 411, the signal connection portion 421, and the ground connection portion 431 are formed by a screen, a steel plate, ink jet, electroplating, chemical plating, or sputtering, so that the volume of the inductive switch can be effectively reduced, the inductive switch can be applied to a product with a smaller volume, and the steps of assembling and wiring can be simplified.

Referring to fig. 5, 6 and 7, a second embodiment of the inductive switch of the present invention is similar to the first embodiment, with the difference that:

the emission axis L extends along the left-right axis X.

The layered structure of the bottom layer group 21 is made of two ceramic raw germ layers 200, the layered structure of the top layer group 22 is made of four ceramic raw germ layers 200, and the layered structure of the surrounding layer group 23 is made of two ceramic raw germ layers 200.

The bottom connecting surface 211 of the base unit 2 has an inclined surface 213 surrounding a portion of the rolling area 243.

Referring to fig. 6, 7 and 8, the inclined surface 213 extends from opposite ends of the emission axis L along the front-rear axial direction Y toward the top group 22 and is horizontal along the left-right axial direction X, so that when the inductive switch is inclined along the front-rear axial direction Y, the rolling member 33 rolls between the off position (see the solid line position of the rolling member 33 in fig. 7 and 8) and the on position (see the imaginary line position of the rolling member 33 in fig. 7 and 8) in response to gravity. When the inductive switch is tilted along the left-right axis X, the rolling member 33 will be kept at the position corresponding to the emitting axis L and block the light receiving element 32 from receiving the light beam emitted from the light emitting element 31, so that the inductive switch can be used as a unidirectional angle switch.

The power supply section 41 of the conducting unit 4 has one of the power supply connection portions 411. The power supply connection portion 411 is provided on the bottom attachment surface 211 and supplies power to the light emitting element 31 and the light receiving element 32 at the same time.

The power supply mounting part 412 has the first power supply region 413 and the second power supply region 414.

The signal mounting portion 422 has the first signal region 423 and the second signal region 424. The signal connection portion 421 is disposed on the bottom connection surface 211.

The ground mounting portion 432 has the first ground region 433, and the second ground region 434.

When the inductive switch is applied, the user can place the circuit board 1 (not shown in fig. 6, 7, and 8) on the first installation surface 212 or the second installation surface 222 of the inductive switch, and electrically connect the corresponding first power supply region 413 and second power supply region 414, the corresponding first signal region 423 and first signal region 424, and the corresponding first ground region 433 and second ground region 434 to the circuit board 1.

Thus, the second embodiment can achieve the same purpose and effect as the first embodiment.

Referring to fig. 9, a third embodiment of the inductive switch of the present invention is similar to the second embodiment, with the difference that:

the layered structure of the top set 22 is made of one ceramic raw germ layer 200, and the layered structure of the surrounding set 23 is made of six ceramic raw germ layers 200.

The extending directions of the power supply connection portion 411, the signal connection portion 421, and the ground connection portion 431 of the conduction unit 4 are different from those of the second embodiment.

The power supply mounting portion 412 also has the third power supply region 415.

The signal mounting portion 422 also has the third signal region 425.

The ground mounting portion 432 further has the third ground region 435 and a ground extension region 436 disposed on the top connection surface 221. The manufacturing process of the ground extension 436 is similar to that of the ground connection 431, and is not repeated.

By providing the ground extension area 436, the current can flow to the third ground area 435, and by providing the third power supply area 415, the third signal area 425 and the third ground area 435, the user can also choose to place the circuit board 1 (not shown in fig. 9) on the third mounting surface 233 of the inductive switch during the application of the inductive switch.

Thus, the third embodiment can achieve the same purpose and effect as the second embodiment.

Referring to fig. 10, 11 and 12, a fourth embodiment of the inductive switch of the present invention is similar to the first embodiment, and the difference is:

the layered structure of the surrounding layer group 23 is made of fourteen ceramic raw germ layers 200.

The rolling area 243 of the accommodating space 24 is spherical and has a diameter larger than the diameter of the rolling member 33.

The rolling member 33 of the switch unit 3 is made of a light-transmitting material.

When the inductive switch is vibrated or inclined by stress, the rolling member 33 rolls between the first position and the second position along with the gravity.

When the inductive switch is horizontal, the rolling member 33 is in the first position (see the solid line position of the rolling member 33 in fig. 12), and the rolling member 33 corresponds to the emission axis L. When the sensor switch is tilted or shocked, the rolling member 33 will roll to the second position (see the imaginary line position of the rolling member 33 in fig. 12) under the action of gravity, and the rolling member 33 rolls to a position different from the first position, so that the amount of the reflected light beam and the amount of the received light of the light receiving element 32 can be changed, and further the signal generated by the light receiving element 32 can be changed, and therefore the sensor switch can be used as a shocking switch.

Thus, the fourth embodiment can achieve the same purpose and effect as the first embodiment.

Referring to fig. 13, 14 and 15, a fifth embodiment of the inductive switch of the present invention is similar to the fourth embodiment, except that:

the layered structure of the top set of layers 22 is made of two ceramic raw germ layers 200. The layered structure of the surrounding layer group 23 is made of four ceramic raw germ layers 200.

The emission axis L extends along the left-right axis X.

The conducting unit 4 includes two power supply sections 41 respectively connected to and supplying power to the light emitting element 31 and the light receiving element 32. Each power supply section 41 has a power supply connection portion 411 provided on the bottom connection surface 211, and a power supply mounting portion 412 connected to the power supply connection portion 411. Each of the power supply mounting portions 412 has one of the first power supply regions 413.

The signal mounting part 422 has the first signal region 423. The signal connection portion 421 is disposed on the bottom connection surface 211. The ground mounting portion 432 has the first ground region 433.

When the inductive switch is applied, the user needs to dispose the circuit board 1 (not shown in fig. 13, 14, and 15) on the first mounting surface 212 of the inductive switch, and electrically connect the first power supply region 413, the first signal region 423, and the first ground region 433 to the circuit board 1.

Thus, the fifth embodiment can achieve the same purpose and function as the fourth embodiment.

In summary, the inductive switch of the present invention can effectively reduce the volume of the inductive switch by sintering the plurality of ceramic raw layers 200 into the base unit 2, so that the inductive switch can be applied to a product with a smaller volume, thereby achieving the object of the present invention.

It should be understood that the above description is only exemplary of the present invention, and that the scope of the present invention should not be limited thereby, and that the invention is intended to cover all modifications and equivalents of the claims and their equivalents.

Claims

1. An inductive switch comprising a base unit, characterized in that: the inductive switch also comprises a switch unit and a conduction unit, wherein the base body unit is formed by stacking and sintering a plurality of ceramic green layers and comprises a bottom layer group, a top layer group and a surrounding layer group, the surrounding layer group is arranged between the peripheries of the bottom layer group and the top layer group, the bottom layer group, the top layer group and the surrounding layer group define an accommodating space, one of the bottom layer group, the top layer group and the surrounding layer group is provided with a first mounting surface which is relatively far away from the accommodating space and positioned at the outer side, the switch unit is arranged in the accommodating space and comprises a light emitting part capable of emitting a light beam, a light receiving part capable of receiving the light beam and generating a signal and a rolling part which is positioned between the light emitting part and the light receiving part and can roll freely to change the light receiving amount of the light receiving part, and the conduction unit is arranged on the base body unit and is made of metal materials, the light receiving device comprises at least one power supply section and a signal section, wherein the signal section can transmit signals sent by the light receiving part, the at least one power supply section can supply power to the light emitting part and the light receiving part, the at least one power supply section is provided with a first power supply area positioned on the first mounting surface, and the signal section is provided with a first signal area positioned on the first mounting surface.

2. The inductive switch of claim 1, wherein: the other one of the bottom layer group, the top layer group and the surrounding layer group of the base unit is provided with a second mounting surface which is relatively far away from the accommodating space and positioned on the outer side, the at least one power supply section is also provided with a second power supply area positioned on the second mounting surface, and the signal section is also provided with a second signal area positioned on the second mounting surface.

3. The inductive switch of claim 2, wherein: still another one of the bottom layer group, the top layer group and the surrounding layer group of the base unit has a third installation surface portion relatively far away from the accommodating space and located on the outer side, the at least one power supply section has a third power supply area located on the third installation surface portion, and the signal section has a third signal area located on the third installation surface portion.

4. The inductive switch of claim 3, wherein: the conduction unit further comprises a grounding section connected with the light emitting piece, and the grounding section is provided with a first grounding area positioned on the first mounting surface, a second grounding area positioned on the second mounting surface, and a third grounding area positioned on the third mounting surface.

5. The inductive switch of claim 1, wherein: the light emitting element emits a light beam extending along an emission axis, the rolling element of the switch unit is made of opaque material and can roll between a cut-off position and an on-off position relative to the light emitting element, the rolling element corresponds to the emission axis in the cut-off position and can block the light receiving element from receiving the light beam emitted by the light emitting element, and the rolling element deviates from the emission axis in the on-off position and enables the light receiving element to receive the light beam emitted by the light emitting element.

6. The inductive switch of claim 5, wherein: the receiving space is provided with an emitting area and a receiving area which are arranged oppositely along the emitting axis, and a rolling area which is positioned between the emitting area and the receiving area, the rolling area is in a cone shape with a wide upper part and a narrow lower part, the light emitting piece is arranged in the emitting area, the light receiving piece is arranged in the receiving area, and the rolling piece can be arranged in the rolling area in a rolling way.

7. The inductive switch of claim 1, wherein: the light beam emitted by the light emitting piece extends along an emission axis, the rolling piece of the switch unit is made of a light-transmitting material, the rolling piece can roll between a first position and a second position relative to the light emitting piece, the rolling piece corresponds to the emission axis in the first position, and the rolling piece rolls to a position different from the first position in the second position.

8. The inductive switch of claim 7, wherein: the receiving space is provided with an emitting area and a receiving area which are arranged oppositely along the emitting axis, and a rolling area which is arranged between the emitting area and the receiving area, the rolling area is spherical, the aperture of the rolling area is larger than the diameter of the rolling piece, the light emitting piece is arranged in the emitting area, the light receiving piece is arranged in the receiving area, and the rolling piece can be arranged in the rolling area in a rolling way.

9. The inductive switch of claim 1, wherein: the bottom group of base member unit has the connection encircle the end of the bed group and connect the face, the top layer group has the connection encircle the top of the bed group and connect the face, at least one power supply section that switches on the unit still has by metal material make and set up in end connect the face with the power supply connecting portion of one of them of face is connected on the top, the signal section have by metal material make and set up in end connect the face with the signal connecting portion of one of them of face is connected on the top.

10. The inductive switch of claim 9, wherein: at least one of the bottom layer group and the top layer group of the base body unit is connected with the surrounding layer group into a whole through an adhesive material after the rolling piece is placed into the accommodating space.