CN212367245U

CN212367245U - Induction switch

Info

Publication number: CN212367245U
Application number: CN202021400563.7U
Authority: CN
Inventors: 周添铭
Original assignee: Dari Technology Co ltd
Current assignee: Dari Technology Co ltd
Priority date: 2020-07-16
Filing date: 2020-07-16
Publication date: 2021-01-15
Anticipated expiration: 2030-07-16

Abstract

An inductive switch comprises a base unit, a switch unit and a conduction unit. The base unit is made of a plurality of ceramic raw germ 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 member, a light receiving member, and a rolling member capable of emitting a light beam along an emission axis. The rolling member is capable of rolling between an open position and an open position relative to the light emitting member. The surrounding layer group is provided with a bump. The conducting unit comprises at least one power supply section and a signal section. The at least one power supply section has a first power supply region. The signal segment has a first signal region. When the inductive switch is inverted and at rest, the lug can keep the rolling piece at the passage position and deviated from the emission axis to avoid shielding the light beam.

Description

Induction switch

Technical Field

The utility model relates to a switching device especially relates 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.

The rolling area is in a cone shape and is provided with a large-diameter end and a small-diameter end which are arranged oppositely. The diameter of the ball is larger than the aperture of the small-diameter end and smaller than the aperture of the large-diameter end.

When the existing inductive switch rotates, the ball bearing is under the action of gravity and rolls in the rolling area to shield or open the light path between the light emitting piece and the light receiving piece so as to form an open circuit or a conducting loop.

However, when the conventional inductive switch rotates to make the ball correspond to the large-diameter end, since the diameter of the ball is smaller than the diameter of the large-diameter end, the ball can continuously roll between the positions for shielding and opening the light path without continuing to rotate, which results in poor accuracy of the conventional inductive switch. In addition, the conventional inductive switch is bulky, and thus, the product volume of the application is limited.

Disclosure of Invention

An object of the utility model is to provide a good and inductive switch that can reduce volume of accuracy.

The utility model discloses an inductive switch contains the base member 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, a light receiving piece and a rolling piece, wherein the light emitting piece can emit light beams along an emission axis, the light receiving piece can receive the light beams and generate signals, and the rolling piece is positioned between the light emitting piece and the light receiving piece and can roll to change the light receiving amount of the light receiving piece. The rolling member is capable of rolling relative to the light emitting member between an open position corresponding to the emission axis and an open position offset from the emission axis. The surrounding layer group is provided with a lug which is arranged in the accommodating space and can enable the rolling piece to be kept at the passage position and deviate from the emission axis when the induction switch is inverted and is static. 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.

The utility model discloses an inductive switch, the accommodation space has the edge launch site and the receiving area that the transmission axis set up on the contrary, and be located the launch site with roll district between the receiving area. 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. The projection is arranged in the rolling area.

The utility model discloses an inductive switch, the rolling district of accommodation space is the taper form narrow down wide in the top, and has the edge big footpath end and the path end that the transmission axis set up in the opposite direction. The diameter of the rolling member is larger than the aperture of the small diameter end and smaller than the aperture of the large diameter end. The lug is arranged at the large-diameter end.

The utility model discloses an inductive switch, switch element's rolling member is made by light-tight material. When the rolling piece is at the open circuit position, the rolling piece is positioned at the small diameter end and corresponds to the emission axis, and can block the light receiving piece from receiving the light beam emitted by the light emitting piece. In the passage position, the rolling member is located at the large diameter end and is offset from the emission axis, and the light receiving member is enabled to receive the light beam emitted by the light emitting member.

The utility model discloses an inductive switch, the bottom group of base member unit has the connection the face is connected around the end of bed 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 connection part which is made of metal materials and is arranged on at least one of the bottom connection surface and the top connection 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.

The utility model discloses an inductive switch, the bottom layer group of base member unit with at least one of them of top layer group through adhere the material with it is integrative to encircle the layer group link to each other. The utility model discloses an inductive switch, the bottom layer group of base member unit, top layer group and wherein another of surrounding layer group is formed with and keeps away from relatively the accommodation space just is located the second installation face in the outside. 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.

The utility model discloses an inductive switch, the bottom layer group of base member unit, top layer group and all the other one around the layer group are formed with and keep away from relatively the accommodation space just is located the third installation face in the outside. 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.

The utility model discloses an inductive switch, switch on the unit still including connecting the ground connection section of light emission piece. 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.

The beneficial effects of the utility model reside in that: by arranging the lug, when the inductive switch is inverted and is static, the lug can enable the rolling piece to be kept at the passage position and deviate from the emission axis, so that the situation that the rolling piece stays at the position corresponding to the emission axis to shield the light beam to cause error detection can be avoided. In addition, the base unit is made by sintering a plurality of ceramic raw layers, so that the volume of the inductive switch can be reduced, and the inductive switch can be applied to products with smaller volume.

Drawings

Fig. 1 is a perspective combination view of an embodiment of the inductive switch of the present invention;

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

FIG. 3 is a view similar to FIG. 2, but from a bottom perspective;

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

Detailed Description

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

Referring to fig. 1, 2, 3 and 4, the 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.

The base unit 2 is formed by stacking and sintering a plurality of ceramic raw germ layers 200, and includes a bottom layer group 21, a top layer group 22 spaced from the bottom layer group 21 along the upper and lower axial directions Z, and a surrounding layer group 23 disposed between the peripheries of the bottom layer group 21 and 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, an outer surrounding surface 232 opposite to the inner surrounding surface 231 and located outside and relatively far away from the accommodating space 24, and a protrusion 234 disposed in 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 seventeen ceramic raw germ layers 200, but is 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, the layered structure of the surrounding layer group 23 is disclosed, and therefore, all the drawings 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 rolling area 243 has a large diameter end 244 and a small diameter end 245 oppositely disposed along the firing axis L. The bore diameter of the large diameter end 244 is larger than the bore diameter of the small diameter end 245.

The inner circumferential surface 231 of the circumferential layer group 23 has a rolling surface portion 235 that defines the rolling area 243.

The projection 234 is disposed at the large diameter end 244. The projection 234 has a connecting end 236 connected to the rolling surface portion 235 and a leading end 237 opposite the connecting end 236. 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 diameter of the roller 33 is larger than the bore diameter of the small diameter end 245 and smaller than the bore diameter of the large diameter end 244. 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 rolling member 33 in fig. 4), the rolling member 33 is located at the small diameter end 245 and corresponds to the emitting axis L, and blocks the receiving of the light beam emitted from the light emitting element 31 by the light receiving element 32. In the passage position (see the imaginary line position of the rolling member 33 in fig. 4), the rolling member 33 is located at the large diameter end 244 and 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 holes, placing the rolling piece 33 into the accommodating space 24, and sintering the corresponding ceramic raw germ layer 200 into a whole to form the surrounding layer group 23.

Sixthly, 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, then 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.

In application, a user (not shown) can place 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. 1 of the inductive switch, and electrically connect the corresponding first power supply region 413, the second power supply region 414, or the third power supply region 415, the corresponding first signal region 423, the corresponding second signal region 424, or the corresponding third signal region 425, and the corresponding first ground region 433, the second ground region 434, or the third ground region 435 to the circuit board 1.

Since the rolling member 33 is 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 protrusion 234 is disposed at the large diameter end 244, when the rolling member 33 rolls to the large diameter end 244, the rolling member 33 is guided by the protrusion 234 to roll to the passage position in a direction away from the emission axis L, and when the inductive switch is turned over 180 degrees and turned upside down to rest, the protrusion 234 can also abut against one side of the rolling member 33, so that the rolling member 33 is kept at the passage position and deviated from the emission axis L, thereby preventing the rolling member 33 from staying at the large diameter end 244 corresponding to the emission axis L to shield the light beam, thereby causing an error detection.

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.

It should be noted that, in the present embodiment, the emitting axis L extends along the up-down axial direction Z, so that the light emitting element 31 and the light receiving element 32 are disposed at an interval along the up-down axial direction Z, and the two power supply sections 41 respectively located on the bottom connection surface 211 and the top connection surface 221 are used for supplying power to the light emitting element 31 and the light receiving element 32, however, in other implementation manners, the emitting axis L may also extend along the left-right axial direction X, so that the emitting area 241, the rolling area 243 and the receiving area 242 are sequentially disposed along the left-right axial direction X, and the light emitting element 31 and the light receiving element 32 are respectively disposed on the emitting area 241 and the receiving area 242 and respectively connected to the bottom connection surface 211 (or the top connection surface 221) corresponding to the positions of the emitting area 241 and the receiving area 242, therefore, the power supply section 41 can supply power to the light emitting element 31 and the light receiving element 32 at the same time by providing only one power supply connection portion 411 which is provided on the bottom connection surface 211 (or the top connection surface 221) and extends from a position corresponding to the emitting area 241 to a position corresponding to the receiving area 242.

In this way, by providing the projection 234, when the inductive switch is turned upside down and at rest, the projection 234 can keep the rolling member 33 at the passage position and deviated from the emission axis L, so that the rolling member 33 can be prevented from staying at the position of the large diameter end 244 corresponding to the emission axis L to shield the light beam. In addition, the inductive switch is manufactured by sintering a plurality of ceramic raw germ layers 200 into 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.

However, the above description is only an example of the present invention, and the scope of the present invention should not be limited thereto, and all the simple equivalent changes and modifications made according to the claims and the contents of the specification should be included in the scope of the present invention.

Claims

1. An inductive switch comprising a base unit, characterized in that: the induction 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 which is separated from the bottom layer group, and a surrounding layer group which is arranged between the bottom layer group and the periphery of 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 which can emit light beams along an emitting axis, a light receiving part which can receive the light beams and generate signals, and a rolling part which is positioned between the light emitting part and the light receiving part and can roll to change the light receiving amount of the light receiving part, and the rolling part can be positioned at an open circuit position corresponding to the emitting axis relative to the light emitting part, and the surrounding layer group is provided with a lug which is arranged in the accommodating space, can enable the rolling piece to be kept at the passage position and deviate from the emission axis when the inductive switch is inverted and is still, the conducting unit is arranged on the base body unit and is made of metal materials, and comprises at least one power supply section and a signal section which can transmit a signal sent by the light receiving piece, the at least one power supply section can supply power to the light emitting piece and the light receiving piece, 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 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 light emitting piece is arranged in the emitting area, the light receiving piece is arranged in the receiving area, the rolling piece can be arranged in the rolling area in a rolling way, and the convex block is arranged in the rolling area.

3. The inductive switch of claim 2, wherein: the rolling area of the accommodating space is in a cone shape with a wide upper part and a narrow lower part, and is provided with a large-diameter end and a small-diameter end which are arranged along the emission axis in an opposite way, the diameter of the rolling piece is larger than the aperture of the small-diameter end and smaller than the aperture of the large-diameter end, and the lug is arranged at the large-diameter end.

4. The inductive switch of claim 3, wherein: the rolling piece of the switch unit is made of opaque materials, when the rolling piece is in the open circuit position, the rolling piece is located at the small-diameter end and corresponds to the emission axis, and can block the light receiving piece from receiving the light beams emitted by the light emitting piece, and when the rolling piece is in the open circuit position, the rolling piece is located at the large-diameter end and deviates from the emission axis, and the light receiving piece can receive the light beams emitted by the light emitting piece.

5. 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 have by metal material make and set up in end connect the face with the power supply connecting portion of at least one in the 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 the face is connected on the top.

6. The inductive switch of claim 3, wherein: at least one of the bottom layer group and the top layer group of the base unit is integrally connected with the surrounding layer group through an adhesive material.

7. The inductive switch of claim 1, wherein: and 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.

8. The inductive switch of claim 7, 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 third installation surface portion which is relatively far away from the accommodating space and is positioned on the outer side, the at least one power supply section is provided with a third power supply area positioned on the third installation surface portion, and the signal section is provided with a third signal area positioned on the third installation surface portion.

9. The inductive switch of claim 8, 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.