CN203428311U - Damped rotation type level switch - Google Patents
Damped rotation type level switch Download PDFInfo
- Publication number
- CN203428311U CN203428311U CN201320430364.4U CN201320430364U CN203428311U CN 203428311 U CN203428311 U CN 203428311U CN 201320430364 U CN201320430364 U CN 201320430364U CN 203428311 U CN203428311 U CN 203428311U
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- housing
- type level
- transmission shaft
- actuating device
- rotary type
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Abstract
The utility model relates to a damped rotation type level switch used for storage and material management. The damped rotation type level switch comprises a shell, a driving device, two motor-driven switches, an elastic component, a clutch, a transmission shaft and a blade. At ordinary times, an elastic clamp of the clutch is used for clamping the movement section of the non-circular cross section of the transmission shaft, and thus when the driving device drives the clutch to rotate, the clutch can rotate together with the transmission shaft and the blade; however, when the blade suffers from overlarge external force suddenly and the transmission shaft is made to rotate rapidly, due to the fact that the transmission shaft is clamped by the elastic clamp only through elastic force, the transmission shaft which rotates rapidly can support the elastic clamp to be open and can rotate relative to the elastic clamp, and transmission of the external force and damage to the driving device can be avoided; the clutch only comprises a clutch frame and the elastic clamp, the above effect can be achieved, hence, the structure is simple, and cost is relatively low.
Description
Technical field
The utility model relates to a kind of level switch that is applied to the handling of goods and materials of warehouse, particularly relates to a kind of blocking rotary type level switch.
Background technology
Level switch is applied to the handling of goods and materials of warehouse, to monitor the storage location height that has or not or detect material in warehouse of material in warehouse, this material being stored in warehouse can be the various materials with certain weight proportion, for example: feed, cereal, peanut, Fructus Hordei Germinatus, clay, silicon sand, limestone, rock, wood chip, timber, metal, rubber, resin, particles, regrind materials, coal, cast material etc.; And level switch can be divided into blocking rotary type level switch, tuning-fork type level switch and capacitance object bit switch etc. according to the difference of its principle of design.
The blocking rotary type level switch of prior art, it includes a housing, an actuating device, one first automotive, one second automotive, a torque spring, a transmission shaft and a blade; Actuating device is hubbed in housing, and off-axis heart is extruded with one and presses post; Two automotives are disposed in housing; Torque spring one end is against housing, other end pushing and pressing actuating device press post, and make to press post and be resisted against on the first automotive; Transmission shaft driven device drives, and protrudes from outside housing; Blade is arranged on end part of driving shaft.
During use, level switch is fixed in warehouse, and actuating device makes the related blade rotation of transmission shaft, while touching blade when solid accumulation, material can produce a resistance and stop blade and transmission shaft to rotate, and then cause actuating device oppositely relative to transmission shaft, to rotate and push simultaneously torque spring, and therefore make the post that presses on actuating device leave the first automotive and change against the second automotive; The first automotive is not by against rear, and actuating device just can stop driving transmission shaft, and the second automotive is by against rear, just can transmitting signals be accumulated to the height of appointment to inform material, and therefore reach the object that monitors material storing height in warehouse.
Yet the blocking rotary type level switch of prior art has following shortcoming:
One, at material, fall in the process of warehouse, material may strike blade and cause blade and the unexpected twirl of transmission shaft from specific angle, and the twirl of transmission shaft can cause the component wear such as transmission gear in actuating device, therefore between transmission shaft and actuating device, be further provided with a power-transfer clutch; When the related transmission shaft of blade is subject to an excessive external force, power-transfer clutch just can be removed being connected of transmission shaft and actuating device, to avoid actuating device to damage; Yet, the power-transfer clutch of prior art, its structure is too complicated, so cost of manufacture is high.
Its two, when the material of piling up touches blade and while producing resistance, this resistance can convert a moment of torsion to and indirectly-acting to torque spring, yet the sensitivity of torque spring and torsion accuracy are not satisfactory, therefore may cause actuating device to be closed evening too early or excessively.
Utility model content
In view of the blocking rotary type level switch of aforementioned prior art, the die clutch construction complexity of its use causes shortcoming with high costs and deficiency, and the utility model provides a kind of blocking rotary type level switch, and it can effectively solve above-mentioned shortcoming.
For achieving the above object, the technological means that the utility model adopts is a kind of blocking rotary type level switch of design, wherein comprises:
One housing;
One circuit card, it is arranged in housing;
One actuating device, it is hubbed in housing, and becomes to be electrically connected to circuit card, and actuating device is provided with one and presses portion and an efferent, and the axle center that presses portion and efferent is different;
One first automotive, it is arranged in housing, and becomes to be electrically connected to circuit card;
One second automotive, it is arranged in housing, and becomes to be electrically connected to circuit card, and the second automotive and the first automotive interval arrange;
One elastic element, it is arranged in housing, and pulls actuating device, and makes the portion that presses of actuating device against the first automotive;
One transmission shaft, it is located in housing, and transmission shaft is start section in abutting connection with one end of housing, and the cross section of start section is non-circular, and the other end of transmission shaft protrudes from outside housing;
One power-transfer clutch, it is arranged in housing, and is connected between actuating device and transmission shaft, and can drive rotation by driven device; Clutch pack contains a clutch rack and an elastic clip; Clutch rack is the efferent of connecting drive device rotatably not, and the start section of sheathed transmission shaft; Elastic clip is arranged in clutch rack, and the start section of sandwiched transmission shaft, and optionally by start section, is strutted;
One blade, it is arranged on transmission shaft, and is positioned at outside housing.
The utility model has the advantage of, under general state, the start section of the noncircular cross section of the elastic clip sandwiched transmission shaft of power-transfer clutch, so when actuating device driving clutch rotates, the power-transfer clutch related transmission shaft of meeting and blade rotation; And when blade is subject to suddenly an excessive external force, this external force can make transmission shaft rotate rapidly suddenly, now because elastic clip is only by elastic force sandwiched transmission shaft, therefore the transmission shaft of twirl can strut elastic clip and the rotation of relative resilient folder, therefore can avoid this external force to be passed to actuating device and to cause actuating device impaired; And power-transfer clutch only includes a clutch rack and an elastic clip, just can reach above-mentioned effect, so its simple structure, and cost is relatively cheap.
Furthermore, described blocking rotary type level switch, wherein elastic element is extension spring.Extension spring is compared the torque spring of prior art and is had higher sensitivity and torsion accuracy, therefore can make actuating device resist torsion exactly and be in due course the mobile portion that presses.
Furthermore, described blocking rotary type level switch, wherein further has a luminescence unit, and it is connected with housing, and becomes to be electrically connected to circuit card.Therefore when the height of solid accumulation to appointment, and when the second automotive is started, luminescence unit is also can be simultaneously luminous and user just can be learnt by visual.
Accompanying drawing explanation
Fig. 1 is stereo appearance figure of the present utility model.
Fig. 2 is large portion of the present utility model element exploded view.
Fig. 3 is thin parts element exploded view of the present utility model.
Fig. 4 is the installing schematic diagram of fixed mount of the present utility model and actuating device.
Fig. 5 is side cutaway view of the present utility model.
Fig. 6 is the installing schematic diagram of power-transfer clutch of the present utility model and actuating device.
Fig. 7 is the element exploded view of power-transfer clutch of the present utility model.
Fig. 8 is the general use view of power-transfer clutch of the present utility model.
Fig. 9 is the general use view of actuating device of the present utility model.
Figure 10 is that the solid accumulation of actuating device of the present utility model is to the use view of specified altitude assignment.
Figure 11 is the use view that the blade of power-transfer clutch of the present utility model suffers suddenly external force.
Drawing reference numeral explanation
10 housing 11 bases
12 upper cover 121 transmittance sections
13 stay bearing plate 131 orbit holes
14 circuit card 141 orbit holes
15 fixed mount 151 jacks
152 wire casing 153 wire casings
20 actuating device 21 efferents
211 standstill faces 22 press portion
23 jack 24 electric wires
31 first automotive 311 press sections
32 second automotive 321 press sections
40 elastic element 50 luminescence units
51 electric wire 60 power-transfer clutchs
61 attaching parts 62 screw pieces
63 clutch rack 631 elasticity clip slots
632 opening 633 spacing holes
64 elastic clips 641 are around portion
642 sandwiched portion 643 limiting sections
70 transmission shaft 71 start sections
711 abutment face 80 blades
The specific embodiment
Below coordinate accompanying drawing and preferred embodiment of the present utility model, further setting forth the utility model is to reach the technological means that predetermined utility model object is taked.
Refer to shown in Fig. 1 to Fig. 3, blocking rotary type level switch of the present utility model includes a housing 10, a circuit card 14, an actuating device 20, one first automotive 31, one second automotive 32, an elastic element 40, a luminescence unit 50, a power-transfer clutch 60, a transmission shaft 70 and a blade 80.
Refer to shown in Fig. 2 to Fig. 5, aforesaid housing 10 includes a base 11, a upper cover 12, a stay bearing plate 13 and a fixed mount 15; Base 11 and upper cover 12 combine and are coated out an inner space; The top of upper cover 12 is provided with a transmittance section 121; Stay bearing plate 13 is installed in housing 10, and is penetrated with up and down an orbit hole 131, and the orbit hole 131 of stay bearing plate 13 is a circular hole; Fixed mount 15 is arranged on the end face of stay bearing plate 13, and the end face of fixed mount 15 is provided with a jack 151, and the end face of fixed mount 15 and lateral surface are respectively equipped with a wire casing 152,153.
Refer to shown in Fig. 3 to Fig. 6, aforesaid actuating device 20 is hubbed between the stay bearing plate 13 and fixed mount 15 in housing 10, actuating device 20 is connected with many electric wires 24, and this isoelectric line 24 runs through stay bearing plate 13 and is connected to circuit card 14 (as shown in Figures 4 and 5); Actuating device 20 is outstanding to be downwards provided with an efferent 21 and and to press portion 22, and efferent 21 runs through stay bearing plate 13 and circuit card 14, and actuating device 20 take efferent 21 and be hubbed on stay bearing plate 13 as axle center, and a side of efferent 21 is concaved with a standstill face 211; The axle center that presses portion 22 and efferent 21 is different, presses the orbit hole 131,141 that stay bearing plate 13 and circuit card 14 are run through in portion 22, and presses portion 22 and can in this two orbit hole 131,141, move; The end face of actuating device 20 is provided with a plurality of jacks 23, and these jack 23 horizontal interval (HI)s arrange; In the present embodiment, actuating device 20 is a motor.
Refer to shown in Fig. 3, Fig. 5 and Fig. 6, aforesaid the first automotive 31 and the second automotive 32 horizontal interval (HI)s are arranged on the bottom surface of the circuit card 14 in housing 10, and all with 14 one-tenth electrical connections of circuit card, the relative side of two automotives 31,32 is respectively equipped with a press section 311,321, when press section 311,321 is pressed, just can open this automotive 31,32; In the present embodiment, the first automotive 31 and the second automotive 32 are all double pole double throw (double pole double throw; DPDT) switch, but not as limit, and visual demand changes the switches such as photoswitch (optical switch), micro-switch (micro switch), Hall element (Hall sensor), induction type proximity switch (inductive sensor) into.
Refer to shown in Fig. 2 to Fig. 4, aforesaid elastic element 40 is arranged in housing 10, and be connected between fixed mount 15 and actuating device 20, elastic element 40 one end are plugged in the jack 151 of fixed mount 15, the other end is plugged in the wherein jack 23 on actuating device 20, therefore elastic element 40 can pull the actuating device 20 being hubbed on stay bearing plate 13, and makes the portion that presses 22 of actuating device 20 against the press section 311 of the first automotive 31, so open the first automotive 31; Therefore in addition,, because actuating device 20 is provided with a plurality of jacks 23, by being plugged in, elastic element 40 in different jack 23, adjusts the pulling force that pulls actuating device 20; In the present embodiment, elastic element 40 is extension spring, and by high sensitivity and the high torsion accuracy of extension spring, can make actuating device 20 resist torsion exactly and be in due course the mobile portion 22 that presses.
Refer to shown in Fig. 2 to Fig. 5, aforesaid luminescence unit 50 is arranged on the end face central authorities of the fixed mount 15 in housing 10, and is positioned at the below of the transmittance section 121 of upper cover 12; Luminescence unit 50 is connected with many electric wires 51, this isoelectric line 51 is sequentially through the wire casing 152,153 on fixed mount 15 end faces and lateral surface, and run through stay bearing plate 13, and being finally connected on circuit card 14, luminescence unit 50 is by this isoelectric line 51 and 32 one-tenth electrical connections of circuit card 14 and the second automotive; By making this isoelectric line 51 through the wire casing 152,153 on fixed mount 15, can effectively fix this isoelectric line 51, and then avoid this isoelectric line 51 to move.
Refer to shown in Fig. 2 and Fig. 5 to Fig. 8, aforesaid power-transfer clutch 60 is arranged in the base 11 in housing 10, and connecting drive device 20, and can drive rotation by driven device 20; Power-transfer clutch 60 includes a connection piece 61, a screw piece 62, a clutch rack 63 and an elastic clip 64; The efferent 21 of the sheathed actuating device 20 of attaching parts 61; Screw piece 62 screws togather through-connections 61, and against the standstill face 211 of efferent 21, therefore makes efferent 21 can drive attaching parts 61 to rotate; The sheathed press joint connection 61 of clutch rack 63, the bottom surface of clutch rack 63 is concaved with an elasticity clip slot 631, and a side of clutch rack 63 is provided with an opening 632, and this opening 632 communicates with elasticity clip slot 631, it is a slotted hole that clutch rack 63 is penetrated with a 633， spacing hole of spacing hole 633 up and down; Elastic clip 64 is located in the elasticity clip slot 631 of clutch rack 63, and protrudes from outside opening 632, and elastic clip 64 is that a line body bending forms, and includes one around portion 641, two sandwiched portions 642 and two limiting sections 643; Curved around portion 641; Two sandwiched portions 642 extend respectively from the two ends around portion 641, and are parallel to each other; Two sandwiched portions 642 protrude from outside opening 632; Two limiting sections 643 vertically extend from two sandwiched portions 642, and be parallel to each other respectively, and two limiting sections 643 are all located in the spacing hole 633 of clutch rack 63, therefore can avoid elastic clip 64 from side direction, to skid off clutch rack 63 easily.
Refer to shown in Fig. 1 and Fig. 2, aforesaid blade 80 is arranged on transmission shaft 70, and is positioned at outside housing 10, and in abutting connection with the bottom of transmission shaft 70.
When the utility model is used, installing is fixed in warehouse, and is electrically connected to control system.
Refer to shown in Fig. 2, Fig. 8 and Fig. 9, at ordinary times, the efferent 21 of actuating device 20 rotates with the attaching parts 61 of dynamic clutch 60, attaching parts 61 drives clutch rack 63, clutch rack 63 elastic clip 64 that drive is installed in wherein rotates, and elastic clip 64 drives the transmission shaft 70 of sandwiched and the blade 80 of bottom thereof together to rotate.
Material in warehouse is piled up gradually and while touching blade 80, material can produce a resistance and stop blade 80 and transmission shaft 70 to rotate; When solid accumulation is more and more higher, and the area contacting with blade 80 is when increasing, and it is large that this resistance also and then becomes, and finally just makes transmission shaft 70 be rotated further; Refer to shown in Fig. 6, Fig. 8 and Figure 10, because resistance increases gradually, so transmission shaft 70 is limited to the elastic force of elastic clip 64 and still elastic clip 64 cannot be strutted, so the efferent 21 of the related power-transfer clutch 60 of transmission shaft 70 and actuating device 20 all cannot rotate; But because actuating device 20 now is still held open state, therefore the efferent 21 of actuating device 20 is bound to such an extent that relative to actuating device 20 bodies, rotate, so that the body that can change by actuating device 20 oppositely rotates relative to efferent 21, and and then the portion of pressing 22 is and then rotated, and from the first automotive 31, turn to the press section 321 that abuts to the second automotive 32, therefore close actuating device 20 signal of transmission simultaneously to control system, to inform that material has been accumulated to the height of appointment; Refer to shown in Fig. 1, Fig. 2 and Fig. 6, in addition,, when open the press section 321 of the second automotive 32, also can open luminescence unit 50 simultaneously, the light of luminescence unit 50 can see through the transmittance section 121 of housing 10 and penetrate out, so user also can learn by visual.
Yet, above-mentionedly be all general use situation, refer to shown in Fig. 1, Fig. 2 and Figure 11, when material strikes blade 80 and causes the related transmission shaft 70 unexpected twirl of blade 80 from specific angle, transmission shaft 70 can strut elastic clip 64 because of unexpected high rotating speed, and then transmission shaft 70 relative resilient folders 64 are rotated, therefore just can avoid this high rotating speed to be passed to actuating device 20 and to cause actuating device 20 impaired, and then reach the object of installing power-transfer clutch 60.
And power-transfer clutch 60 of the present utility model mainly just can be reached above-mentioned effect by clutch rack 63 and elastic clip 64, therefore there is simple structure and effect with low cost.
The above is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet not in order to limit the utility model, any those skilled in the art, within not departing from the scope of technical solutions of the utility model, should utilize the technology contents of above-mentioned announcement to make a little change or be modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solutions of the utility model, any simple modification of above embodiment being done according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (20)
1. a blocking rotary type level switch, is characterized in that, comprises:
One housing;
One circuit card, it is arranged in housing;
One actuating device, it is hubbed in housing, and becomes to be electrically connected to circuit card, and actuating device is provided with one and presses portion and an efferent, and the axle center that presses portion and efferent is different;
One first automotive, it is arranged in housing, and becomes to be electrically connected to circuit card;
One second automotive, it is arranged in housing, and becomes to be electrically connected to circuit card, and the second automotive and the first automotive interval arrange;
One elastic element, it is arranged in housing, and pulls actuating device, and makes the portion that presses of actuating device against the first automotive;
One transmission shaft, it is located in housing, and transmission shaft is start section in abutting connection with one end of housing, and the cross-sectional plane of start section is non-circular, and the other end of transmission shaft protrudes from outside housing;
One power-transfer clutch, it is arranged in housing, and is connected between actuating device and transmission shaft, and can drive rotation by driven device; Clutch pack contains a clutch rack and an elastic clip; Clutch rack is the efferent of connecting drive device rotatably not, and the start section of sheathed transmission shaft; Elastic clip is arranged in clutch rack, and the start section of sandwiched transmission shaft, and optionally by start section, is strutted;
One blade, it is arranged on transmission shaft, and is positioned at outside housing.
2. blocking rotary type level switch as claimed in claim 1, is characterized in that, wherein the elastic clip of power-transfer clutch is that a line body bending forms, and includes one around portion and two sandwiched portions; Curved around portion; Two sandwiched portions extend respectively from the two ends around portion, and are parallel to each other.
3. blocking rotary type level switch as claimed in claim 2, is characterized in that, wherein the elastic clip of power-transfer clutch further includes two limiting sections, and it vertically extends from two sandwiched portions respectively, and is parallel to each other.
4. blocking rotary type level switch as claimed in claim 1, is characterized in that, wherein the bottom surface of the clutch rack of power-transfer clutch is concaved with an elasticity clip slot, and a side of clutch rack is provided with an opening, and this opening communicates with elasticity clip slot; Elastic clip is located in elasticity clip slot, and protrudes from outside opening, and the start section of transmission shaft is located in elasticity clip slot.
5. blocking rotary type level switch as claimed in claim 2, is characterized in that, wherein the bottom surface of the clutch rack of power-transfer clutch is concaved with an elasticity clip slot, and a side of clutch rack is provided with an opening, and this opening communicates with elasticity clip slot; Elastic clip is located in elasticity clip slot, and two sandwiched portions of elastic clip all protrude from outside opening, and the start section of transmission shaft is located in elasticity clip slot.
6. blocking rotary type level switch as claimed in claim 3, is characterized in that, wherein the bottom surface of the clutch rack of power-transfer clutch is concaved with an elasticity clip slot, and a side of clutch rack is provided with an opening, and this opening communicates with elasticity clip slot, and clutch rack is penetrated with a spacing hole up and down; Elastic clip is located in elasticity clip slot, and two sandwiched portions of elastic clip all protrude from outside opening, and two limiting sections of elastic clip are all located in the spacing hole of clutch rack, and the start section of transmission shaft is located in elasticity clip slot.
7. the blocking rotary type level switch as described in any one in claim 1 to 6, is characterized in that, wherein the start section of transmission shaft is radially concaved with two abutment faces, and this two abutment face is oppositely arranged.
8. the blocking rotary type level switch as described in any one in claim 1 to 6, is characterized in that, wherein elastic element is extension spring.
9. blocking rotary type level switch as claimed in claim 7, is characterized in that, wherein elastic element is extension spring.
10. the blocking rotary type level switch as described in any one in claim 1 to 6, is characterized in that, is further provided with a stay bearing plate and a fixed mount in its middle shell, and fixed mount is arranged on the end face of stay bearing plate, and actuating device is hubbed between stay bearing plate and fixed mount; The two ends of elastic element are Connection Bracket and actuating device respectively.
11. blocking rotary type level switches as claimed in claim 9, is characterized in that, are further provided with a stay bearing plate and a fixed mount in its middle shell, and fixed mount is arranged on the end face of stay bearing plate, and actuating device is hubbed between stay bearing plate and fixed mount; The two ends of elastic element are Connection Bracket and actuating device respectively.
12. blocking rotary type level switches as claimed in claim 10, is characterized in that, wherein circuit card is arranged on the below of the stay bearing plate of housing, and circuit card is penetrated with an orbit hole; Stay bearing plate is also penetrated with an orbit hole; The first automotive and the second automotive are all arranged on the below of circuit card; The orbit hole of stay bearing plate and circuit card is run through in the portion of pressing of actuating device.
13. blocking rotary type level switches as claimed in claim 11, is characterized in that, wherein circuit card is arranged on the below of the stay bearing plate of housing, and circuit card is penetrated with an orbit hole; Stay bearing plate is also penetrated with an orbit hole; The first automotive and the second automotive are all arranged on the below of circuit card; The orbit hole of stay bearing plate and circuit card is run through in the portion of pressing of actuating device.
14. blocking rotary type level switches as claimed in claim 10, is characterized in that, wherein actuating device is provided with a plurality of jacks, and one end of elastic element is plugged in a wherein jack of actuating device.
15. blocking rotary type level switches as claimed in claim 13, is characterized in that, wherein actuating device is provided with a plurality of jacks, and one end of elastic element is plugged in a wherein jack of actuating device.
16. blocking rotary type level switches as described in any one in claim 1 to 6, is characterized in that wherein further having a luminescence unit, and it is connected with housing, and become to be electrically connected to circuit card.
17. blocking rotary type level switches as claimed in claim 15, is characterized in that, wherein further have a luminescence unit, and it is connected with housing, and become to be electrically connected to circuit card.
18. blocking rotary type level switches as claimed in claim 16, is characterized in that, its middle shell is provided with a transmittance section; Luminescence unit is arranged in housing, and its position is corresponding to the transmittance section of housing.
19. blocking rotary type level switches as claimed in claim 17, is characterized in that, its middle shell is provided with a transmittance section; Luminescence unit is arranged in housing, and its position is corresponding to the transmittance section of housing.
20. blocking rotary type level switches as claimed in claim 19, is characterized in that, wherein the outside wall surface of fixed mount is provided with at least one wire casing; Luminescence unit is arranged on the end face of fixed mount of housing, and luminescence unit is connected with at least one electric wire, and each electric wire is located in the wire casing of fixed mount and is connected to circuit card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320430364.4U CN203428311U (en) | 2013-07-18 | 2013-07-18 | Damped rotation type level switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320430364.4U CN203428311U (en) | 2013-07-18 | 2013-07-18 | Damped rotation type level switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203428311U true CN203428311U (en) | 2014-02-12 |
Family
ID=50057362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320430364.4U Expired - Lifetime CN203428311U (en) | 2013-07-18 | 2013-07-18 | Damped rotation type level switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203428311U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108313557A (en) * | 2017-01-17 | 2018-07-24 | 桓达科技股份有限公司 | Anti-rotation type material level switch and its driving structure |
-
2013
- 2013-07-18 CN CN201320430364.4U patent/CN203428311U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108313557A (en) * | 2017-01-17 | 2018-07-24 | 桓达科技股份有限公司 | Anti-rotation type material level switch and its driving structure |
| CN108313557B (en) * | 2017-01-17 | 2019-04-19 | 桓达科技股份有限公司 | Anti-rotation type material level switch and its driving structure |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140212 |
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| CX01 | Expiry of patent term |