CN114324965B - Accurate speed sensor - Google Patents
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- CN114324965B CN114324965B CN202210250006.9A CN202210250006A CN114324965B CN 114324965 B CN114324965 B CN 114324965B CN 202210250006 A CN202210250006 A CN 202210250006A CN 114324965 B CN114324965 B CN 114324965B
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Abstract
The invention relates to an accurate speed sensor. The accurate speed sensor comprises a sensing part and a connecting part, wherein a driving mechanism and a locking mechanism are arranged in a shell of the sensing part, an auxiliary sleeve is sleeved on the sensing part, an adaptive hole is formed in the auxiliary sleeve, a first internal thread matched with the driving mechanism and an annular slot matched with the locking mechanism are arranged on the inner wall of the adaptive hole, and when the sensing part is inserted into the adaptive hole, the driving mechanism rotates through the first internal thread and drives the locking mechanism to gradually bulge until the locking mechanism is completely inserted into the annular slot; when installing, the sensing portion inserts in the auxiliary sleeve and forms the auto-lock gradually to form one deck buffering oil film in the in-process of auto-lock in the clearance between sensing portion and auxiliary sleeve and connecting portion, provide certain damping effect for sensing portion when improving installation stability, can effectually prevent that the greasy dirt in the greasy dirt environment from the clearance circulation, improved the leakproofness of sensor and equipment junction greatly.
Description
Technical Field
The invention belongs to the field of sensors, and particularly relates to an accurate speed sensor.
Background
The sensor is an original element for converting the change of non-electric quantity (such as speed and pressure) into electric quantity change, and can be divided into a pressure sensor, a speed sensor, a temperature sensor and the like according to the different converted non-electric quantities, and is a part and an accessory for measuring and controlling instruments and equipment.
The most common speed sensor is a speed sensor installed on a transmission at present, and is mainly applied to an automobile automatic transmission control system, the automobile automatic transmission control system implements accurate motion control through gear rotating speed information provided by the speed sensor, the speed sensor is the most important measurement and control link in the automatic transmission control system, and the reliability, the safety and the driving smoothness of the automatic transmission are determined by the accuracy of the measurement of the speed sensor.
The sealing ring is used for sealing the speed sensor and the gearbox shell, a certain gap exists between the sensor and the mounting hole, the sealing ring cannot be distributed over the whole sensor, once the existing sealing ring is aged or deformed, the sealing function cannot be provided, the sealing performance of the sensor is greatly reduced, the sensor can vibrate along with equipment, and the monitoring effect and the precision of the sensor are greatly reduced.
Disclosure of Invention
The invention aims to solve the problems and provide an accurate speed sensor which is simple in structure and reasonable in design.
The invention realizes the purpose through the following technical scheme:
a precision type speed sensor includes a sensing part including a case, a coil shaft, a coil, a magnet for generating a magnetic field together with the coil, a plurality of conductive pins electrically connected to the coil, and a lead frame fixed to the coil shaft, a first sealing ring and a second sealing ring are sequentially arranged at the joint of the sensing part and the connecting part, a transition slope surface is arranged between the first sealing ring and the second sealing ring, a driving mechanism and a locking mechanism are arranged in the shell of the sensing part, an auxiliary sleeve is sleeved on the sensing part, an adaptive hole is arranged in the auxiliary sleeve, the inner wall of the adaptive hole is provided with a first internal thread which is respectively matched with the driving mechanism and an annular slot which is matched with the locking mechanism, when the sensing part is inserted into the adapting hole, the driving mechanism rotates when passing through the first internal thread and drives the locking mechanism to gradually bulge until being completely inserted into the annular slot.
As a further optimization scheme of the invention, the first sealing ring is positioned at a position close to the connecting part and has a diameter larger than that of the second sealing ring, the diameter of the joint of the transition slope surface and the first sealing ring is larger than that of the joint of the transition slope surface and the second sealing ring, and a first sealing groove matched with the first sealing ring, a second sealing groove matched with the second sealing ring and an annular wedge surface matched with the transition slope surface are sequentially arranged on the inner wall of the adapting hole.
As a further optimization scheme of the invention, the driving mechanism comprises a first annular groove arranged on the shell of the sensing part, a plurality of limiting slide bars connected on the inner wall of the first annular groove, an annular slide block and a driving ring sleeved in the first annular groove, and an oil bag connected between the annular slide block and the inner wall of the first annular groove, wherein a limiting hole matched with the limiting slide bar is arranged on the annular slide block, and the oil bag is communicated with the locking mechanism.
As a further optimized scheme of the present invention, the driving ring is sleeved outside the annular slider, the outer wall of the annular slider is provided with a first external thread, the outer wall of the driving ring is provided with a second external thread matching with the first internal thread, and the inner wall of the driving ring is provided with a second internal thread matching with the first external thread.
As a further optimization scheme of the invention, the locking mechanism comprises a plurality of oil through grooves arranged in the shell, a T-shaped ring groove arranged on the surface of the shell, an annular sealing rubber sleeve connected to the inner wall of the T-shaped ring groove, an annular limiting block connected to the inner wall of the annular sealing rubber sleeve and a sealing ring connected to the lower end of the annular limiting block, wherein two ends of the plurality of oil through grooves are respectively communicated with the oil bag and the T-shaped ring groove.
As a further optimization scheme of the invention, one side wall of the annular limiting block, which is close to the driving mechanism, is provided with an arc-shaped surface, the other side wall of the annular limiting block is a right-angle surface, and a gap is formed between the arc-shaped surface and one side wall of the T-shaped annular groove.
As a further optimization scheme of the invention, a through hole is arranged at a position, close to the arc-shaped surface, on the annular sealant sleeve, and a median fissure barrier layer is arranged in the through hole.
As a further optimization scheme of the invention, the inner wall of the annular slot is provided with an adaptive surface matched with the arc-shaped surface, when the top of the annular limiting block extrudes the annular sealing rubber sleeve and contacts with the top of the annular slot, a circulation gap is formed between the annular sealing rubber sleeve and the adaptive surface at the arc-shaped surface, the driving mechanism rotates and extrudes the oil bag inside the driving mechanism when passing through the first internal thread, an oil body in the oil bag is introduced into the oil groove and extrudes the sealing ring to move towards the annular slot, and when the sealing ring is separated from the T-shaped annular slot, the oil body gradually flows into the circulation gap from the through hole and gradually fills the gap formed among the inner wall of the adaptive hole, the second sealing ring, the shell and the annular sealing rubber sleeve to form a buffer oil film.
As a further optimization scheme of the invention, when the top of the annular limiting block extrudes the annular sealing rubber sleeve and contacts with the top of the annular slot, the other side wall of the annular limiting block extrudes the annular sealing rubber sleeve to contact with the side wall of the adaptive slot.
As a further optimization scheme of the invention, the auxiliary sleeve and the connecting part are both connected with connecting pieces, the connecting pieces are provided with connecting holes, and the auxiliary sleeve is provided with screw holes.
The invention has the beneficial effects that: when the self-locking device is installed, the sensing part of the sensor is inserted into the auxiliary sleeve and gradually forms self-locking, a layer of buffer oil film is formed in gaps among the sensing part, the auxiliary sleeve and the connecting part in the self-locking process, the installation stability is improved, a certain vibration damping effect is provided for the sensing part, meanwhile, the self-locking mechanism can provide secondary sealing and vibration damping effects, oil stains can be effectively prevented from flowing from the gaps when the sensor works in an oil stain environment, the sealing performance of the connecting part of the sensor and equipment is greatly improved, the safety is improved, and the monitoring precision of the sensor is improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cooperative view of the drive mechanism and locking mechanism of the present invention;
FIG. 3 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;
FIG. 4 is an enlarged view of the invention at B in FIG. 1;
FIG. 5 is a partial cross-sectional view of a sensing portion of the present invention;
fig. 6 is an enlarged view of the invention at C in fig. 5.
In the figure: 1. a sensing portion; 2. a connecting portion; 201. a first seal ring; 202. a second seal ring; 203. a transition slope surface; 3. a connecting member; 4. an auxiliary sleeve; 401. an adapter hole; 402. a first internal thread; 5. a drive mechanism; 501. a first annular groove; 502. a limiting slide bar; 503. an annular slider; 5030. a first external thread; 504. an oil pocket; 505. a drive ring; 5050. a second external thread; 5051. a second internal thread; 6. a locking mechanism; 601. an oil groove is communicated; 602. a T-shaped ring groove; 603. an annular sealing rubber sleeve; 6030. perforating; 6031. a median crack barrier layer; 604. an annular stop block; 6040. an arc-shaped surface; 6041. and (4) a sealing ring.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
Example 1
As shown in fig. 1 and 2, a precision type speed sensor includes a sensing part 1, a connection part 2 connected to one end of the sensing part 1, the sensing part 1 including a case, a coil shaft, a coil, a magnet for generating a magnetic field together with the coil, a plurality of conductive pins electrically connected to the coil, and a lead frame fixed to the coil shaft. This is prior art, and other components are not shown and will not be described herein.
Wherein, the handing-over department of sensing portion 1 and connecting portion 2 is equipped with first sealing washer 201 and second sealing washer 202 in proper order, be equipped with the domatic 203 of transition between first sealing washer 201 and the second sealing washer 202, be equipped with actuating mechanism 5 and locking mechanism 6 in the shell of sensing portion 1, and the cover is equipped with auxiliary sleeve 4 on the sensing portion 1, be equipped with adaptation hole 401 in the auxiliary sleeve 4, adaptation hole 401 inner wall be equipped with respectively with actuating mechanism 5 matched with first internal thread 402 and with locking mechanism 6 matched with annular slot, when sensing portion 1 inserts in adaptation hole 401, actuating mechanism 5 rotates when first internal thread 402 department and orders about locking mechanism 6 and protruding until inserting completely in the annular slot gradually.
It should be noted that, the sensing portion 1 of sensor inserts in auxiliary sleeve 4 and forms the auto-lock gradually, and form one deck buffering oil film in the in-process of auto-lock in the clearance between sensing portion 1 and auxiliary sleeve 4 and connecting portion 2, provide certain damping effect for sensing portion 1 when improving installation stability, and simultaneously, 6 protruding backs of locking mechanism wherein, contact between with the annular slot, certain buffering supporting effect can be played when isolated greasy dirt gets into from the clearance, reach the effect that provides secondary seal and damping, make the sensor during operation in the greasy dirt environment, can effectually prevent that the greasy dirt from circulating from the clearance, the leakproofness of sensor and equipment junction has been improved greatly, the monitoring accuracy of sensor has been improved when improving the security.
The specific working process is as follows.
As shown in fig. 3, the first seal ring 201 is located at a position close to the connection portion 2, and has a diameter larger than that of the second seal ring 202, the diameter of the transition slope 203 at the junction with the first seal ring 201 is larger than that of the transition slope 202, and a first seal groove matched with the first seal ring 201, a second seal groove matched with the second seal ring 202, and an annular wedge surface matched with the transition slope 203 are sequentially disposed on the inner wall of the adapting hole 401.
It should be noted that, through the first sealing washer 201 and the second sealing washer 202 matched with mode that the diameter is different, comparatively stable sealed effect can be provided to, adopt transition slope surface 203 to carry out the transitional coupling between first sealing washer 201 and the second sealing washer 202, the slope surface 203 of transition can effectual increase area of contact, in case the condition that a certain sealing washer became invalid appears, can provide certain cushioning effect for another sealing washer, improved the stability and the sealed effect of sealing washer greatly.
As shown in fig. 5, the driving mechanism 5 includes a first annular groove 501 disposed on the housing of the sensing part 1, a plurality of limit slide bars 502 connected to the inner wall of the first annular groove 501, an annular slider 503 and a driving ring 505 sleeved in the first annular groove 501, and an oil bag 504 connected between the annular slider 503 and the inner wall of the first annular groove 501, the annular slider 503 is provided with a limit hole matched with the limit slide bar 502, and the oil bag 504 is communicated with the locking mechanism 6.
The driving ring 505 is sleeved outside the annular slide block 503, the outer wall of the annular slide block 503 is provided with a first external thread 5030, the outer wall of the driving ring 505 is provided with a second external thread 5050 matched with the first internal thread 402, and the inner wall of the driving ring 505 is provided with a second internal thread 5051 matched with the first external thread 5030.
Wherein, all be connected with connecting piece 3 on auxiliary sleeve 4 and the connecting portion 2, be equipped with the connecting hole on the connecting piece 3, be equipped with the screw on the auxiliary sleeve 4.
It should be noted that when the speed sensor is installed, the auxiliary sleeve 4 is connected in the corresponding hole, then the sensing portion 1 of the sensor is inserted into the fitting hole 401 of the auxiliary sleeve 4, when the driving ring 505 contacts the first internal thread 402 on the inner wall of the fitting hole 401, the second external thread 5050 on the outer wall of the driving ring 505 is engaged with the first internal thread 402 and follows the movement of the sensing portion 1, the driving ring 505 starts to rotate under the action of the thread engagement and the pushing force, when the driving ring 505 rotates, the second internal thread 5051 on the inner wall thereof and the first external thread 5030 on the outer wall of the annular slider 503 generate spiral movement and drive the annular slider 503 to move along the limit sliding rod 502, the annular slider 503 gradually presses the oil pocket 504 during the movement, the oil body is stored in the oil pocket 504, the oil body after being pressed is led into the locking mechanism 6 and gradually bulges it, make it form the locking in inserting the annular slot, the second external screw thread 5050 of cooperation driving ring 505 outer wall and the threaded connection of first internal thread 402, at this moment, under the effect of no external force, sensor and auxiliary sleeve 4 are in comparatively stable connected state, reach the effect of preliminary locking, can make things convenient for the staff to install the operation, the condition that sensor connection angle deviation can not appear appears, locking mechanical system 6 can form the effect of another sealing washer simultaneously, can effectually prevent that greasy dirt among the operational environment from getting into from the clearance, play certain buffering effect simultaneously.
As shown in fig. 6, the locking mechanism 6 includes a plurality of oil through grooves 601 disposed in the housing, a T-shaped ring groove 602 disposed on the surface of the housing, an annular sealing rubber sleeve 603 connected to the inner wall of the T-shaped ring groove 602, an annular limiting block 604 connected to the inner wall of the annular sealing rubber sleeve 603, and a sealing ring 6041 connected to the lower end of the annular limiting block 604, wherein two ends of the plurality of oil through grooves 601 are respectively communicated with the oil bag 504 and the T-shaped ring groove 602.
It should be noted that the T-shaped ring groove 602 is divided into a horizontal groove portion and a vertical groove portion, the annular sealing rubber sleeve 603 is connected to the horizontal groove portion, the annular limiting block 604 and the sealing ring 6041 are located in the vertical groove portion, and the size of the sealing ring 6041 is matched with the size of the vertical groove portion.
An arc-shaped surface 6040 is arranged on one side wall of the annular limiting block 604 close to the driving mechanism 5, the other side wall is a right-angle surface, and a gap is formed between the arc-shaped surface 6040 and one side wall of the T-shaped annular groove 602.
A perforation 6030 is arranged at the position, close to the arc-shaped surface 6040, of the annular sealing rubber sleeve 603, and a median crack blocking layer 6031 is arranged in the perforation 6030.
It should be noted that the middle part of the middle crack blocking layer 6031 has a crack, and is in a closed state when no pressure is accumulated, the annular sealing rubber sleeve 603 is tightly attached to the transverse groove part when not stressed, the surface of the annular sealing rubber sleeve is flush with the outer wall of the shell of the sensing part 1, and the annular sealing rubber sleeve is raised after being stressed to form a structure similar to a sealing ring, after the annular sealing rubber sleeve 603 is raised, the through hole 6030 on the annular sealing rubber sleeve is gradually separated from the inner wall of the transverse groove part in the raising process, and at this time, the oil body can enter the through hole 6030.
The inner wall of the annular slot is provided with an adapting surface matched with the arc surface 6040, when the top of the annular limiting block 604 extrudes the annular sealing rubber sleeve 603 and contacts with the top of the annular slot, a circulation gap is formed between the annular sealing rubber sleeve 603 and the adapting surface at the arc surface 6040, the driving mechanism 5 rotates and extrudes the oil bag 504 inside the oil bag when passing through the first internal thread 402, oil in the oil bag 504 is introduced into the oil groove 601 and extrudes the sealing ring 6041 to move towards the annular slot, when the sealing ring 6041 is separated from the T-shaped annular groove 602, the oil gradually flows into the circulation gap from the through hole 6030 and gradually fills the gap formed between the inner wall of the adapting hole 401, the second sealing ring 202, the shell and the annular sealing rubber sleeve 603, and a buffer oil film is formed.
As shown in fig. 4, when the top of the annular limiting block 604 presses the annular sealing rubber sleeve 603 and contacts with the top of the annular slot, the other side wall of the annular limiting block 604 presses the annular sealing rubber sleeve 603 to contact with the side wall of the adapter slot.
It should be noted that the oil body pushes the sealing ring 6041 to move to the annular slot along the vertical slot, when the sealing ring 6041 is separated from the vertical slot, the sealing ring 6041 drives the annular limiting block 604 to jack up the annular sealing rubber sleeve 603, the annular sealing rubber sleeve 603 deforms, at this time, the oil body flows into the gap between the annular sealing rubber sleeve 603 and the annular limiting block 604 along the bottom of the sealing ring 6041, and continues to press the sealing ring 6041 to move upward, at this time, until the through hole 6030 on the annular sealing rubber sleeve 603 and the horizontal slot are no longer in contact, the oil body can flow into the through hole 6030 and open the middle split blocking layer 6031 in the through hole 6030 to flow out of the annular sealing rubber sleeve 603, it should be noted that at this time, the oil body flows out and the sealing ring 6041 continues to move simultaneously, because the top end of the annular limiting block 604 has a certain distance difference with the through hole 6030 at this time, the oil body flows into the flow gap formed between the annular sealing rubber sleeve 603 and the adapting surface at the arc surface 6040 after flowing out of the annular sealing rubber sleeve 603, and gradually flows into a gap formed among the inner wall of the adaptive hole 401, the second seal ring 202, the housing and the annular seal rubber sleeve 603, at this time, the second seal ring 202 does not completely enter the second seal groove, at this time, the oil body enters the gap and then extrudes air existing in the gap, so that the air is discharged to the outside, the process is continued until the annular seal rubber sleeve 603 is extruded to the top of the annular slot by the top end of the annular limit block 604 and is tightly contacted, the air in the gap may be completely discharged, but a part of air may also exist, but the air content is low, the oil body occupation is high, a layer of buffer oil film can be formed, at this time, the oil body in the gap and the oil body in the locking mechanism 6 are both in a stable state, the oil film is matched with the raised annular limit block 604 and the annular seal rubber sleeve 603, so that a good buffer effect can be achieved, and the influence of the equipment vibration on the sensor can be effectively reduced, moreover, when the top of annular stopper 604 extrudes annular sealing rubber sleeve 603 to annular slot top and in close contact with each other, annular stopper 604 extrudes annular sealing rubber sleeve 603 for another lateral wall of right angle face and the lateral wall in close contact with each other of adaptation slot, realizes sealed effect, can prevent in the follow-up use, greasy dirt among the operational environment gets into from the clearance, can make the leakproofness of sensor improve greatly.
In the description of the present invention, it is to be understood that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (9)
1. A precision type speed sensor comprising a sensing part (1), a connecting part (2) connected at one end of the sensing part (1), the sensing part (1) comprising a housing, a coil shaft, a coil, a magnet for generating a magnetic field together with the coil, a plurality of conductive pins electrically connected with the coil, and a lead frame fixed to the coil shaft, characterized in that: a first sealing ring (201) and a second sealing ring (202) are sequentially arranged at the joint of the sensing part (1) and the connecting part (2), a transition slope surface (203) is arranged between the first sealing ring (201) and the second sealing ring (202), a driving mechanism (5) and a locking mechanism (6) are arranged in a shell of the sensing part (1), an auxiliary sleeve (4) is sleeved on the sensing part (1), an adaptive hole (401) is arranged in the auxiliary sleeve (4), a first internal thread (402) which is matched with the driving mechanism (5) and an annular slot which is matched with the locking mechanism (6) are arranged on the inner wall of the adaptive hole (401), and when the sensing part (1) is inserted into the adaptive hole (401), the driving mechanism (5) rotates when passing through the first internal thread (402) and drives the locking mechanism (6) to gradually bulge until the locking mechanism (6) is completely inserted into the annular slot;
the driving mechanism (5) comprises a first annular groove (501) arranged on the shell of the sensing part (1), a plurality of limiting sliding rods (502) connected to the inner wall of the first annular groove (501), an annular sliding block (503) and a driving ring (505) sleeved in the first annular groove (501), and an oil bag (504) connected between the annular sliding block (503) and the inner wall of the first annular groove (501), wherein limiting holes matched with the limiting sliding rods (502) are formed in the annular sliding block (503), and the oil bag (504) is communicated with the locking mechanism (6).
2. A precision speed sensor according to claim 1, wherein: first sealing washer (201) are located the position and its diameter that are close to connecting portion (2) and are greater than second sealing washer (202), and the diameter of transition domatic (203) and first sealing washer (201) handing-over department is greater than its diameter with second sealing washer (202) handing-over department, be equipped with in proper order on the inner wall of adaptation hole (401) with first sealing washer (201) matched with first seal groove, with second sealing washer (202) matched with second seal groove and with the domatic (203) matched with annular wedge face of transition.
3. A precision speed sensor according to claim 1, wherein: the driving ring (505) is sleeved outside the annular sliding block (503), a first external thread (5030) is arranged on the outer wall of the annular sliding block (503), a second external thread (5050) matched with the first internal thread (402) is arranged on the outer wall of the driving ring (505), and a second internal thread (5051) matched with the first external thread (5030) is arranged on the inner wall of the driving ring (505).
4. A precision speed sensor according to claim 1, wherein: locking mechanism (6) lead to oil groove (601), locate shell surface's T shape annular (602), connect annular sealing gum cover (603) on T shape annular (602) inner wall, connect annular stopper (604) on annular sealing gum cover (603) inner wall and connect sealing ring (6041) at annular stopper (604) lower extreme including locating a plurality of in the shell lead to oil groove (601) both ends respectively with oil pocket (504) and T shape annular (602) intercommunication.
5. An accurate speed sensor according to claim 4, wherein: an arc-shaped face (6040) is arranged on one side wall of the annular limiting block (604) close to the driving mechanism (5), the other side wall is a right-angle face, and a gap is formed between the arc-shaped face (6040) and one side wall of the T-shaped ring groove (602).
6. An accurate speed sensor according to claim 5, wherein: the annular sealing rubber sleeve (603) is provided with a through hole (6030) at a position close to the arc-shaped surface (6040), and a split blocking layer (6031) is arranged in the through hole (6030).
7. An accurate speed sensor according to claim 6, wherein: be equipped with on the annular slot inner wall with arcwall face (6040) matched with adaptation face, when the top extrusion annular sealing gum cover (603) of annular stopper (604) and with the top contact of annular slot, form the circulation clearance between annular sealing gum cover (603) and the adaptation face of arcwall face (6040) department, actuating mechanism (5) rotate and extrude its inside oil pocket (504) when first internal thread (402) department, the oil body in oil pocket (504) lets in through oil groove (601) and extrudes sealing ring (6041) and makes it remove to annular slot department, when sealing ring (6041) breaks away from T shape annular groove (602), the oil body flows in the circulation clearance gradually and is full of adaptation hole (401) inner wall gradually from perforation (6030), second sealing washer (202), the clearance that forms between shell and the annular sealing gum cover (603), form a buffering oil film.
8. A precision speed sensor according to claim 7, wherein: when the top of the annular limiting block (604) extrudes the annular sealing rubber sleeve (603) and contacts with the top of the annular slot, the other side wall of the annular limiting block (604) extrudes the annular sealing rubber sleeve (603) to contact with the side wall of the adaptive slot.
9. An accurate speed sensor according to claim 1, wherein: all be connected with connecting piece (3) on auxiliary sleeve (4) and connecting portion (2), be equipped with the connecting hole on connecting piece (3), be equipped with the screw on auxiliary sleeve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210250006.9A CN114324965B (en) | 2022-03-15 | 2022-03-15 | Accurate speed sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210250006.9A CN114324965B (en) | 2022-03-15 | 2022-03-15 | Accurate speed sensor |
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| CN114324965A CN114324965A (en) | 2022-04-12 |
| CN114324965B true CN114324965B (en) | 2022-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210250006.9A Active CN114324965B (en) | 2022-03-15 | 2022-03-15 | Accurate speed sensor |
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| CN115639374B (en) * | 2022-11-21 | 2024-06-07 | 南京凯基特传感科技有限公司 | Gear speed sensor |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001208763A (en) * | 1999-11-15 | 2001-08-03 | Nsk Ltd | Rolling bearing unit with rotational speed detector |
| CN2768012Y (en) * | 2004-12-16 | 2006-03-29 | 航天科技控股集团股份有限公司 | Electromechanical vehicle speed sensor |
| DE102009054521A1 (en) * | 2009-07-28 | 2011-02-03 | Continental Teves Ag & Co. Ohg | Speed sensor |
| US9664705B2 (en) * | 2014-02-19 | 2017-05-30 | Sensata Technologies, Inc. | Speed sensor |
| CN204882599U (en) * | 2015-07-17 | 2015-12-16 | 宁波南车时代传感技术有限公司 | Hall speedtransmitter that side direction was qualified for next round of competitions |
| CN206193020U (en) * | 2016-10-12 | 2017-05-24 | 深圳市福伦达精工技术有限公司 | Vehicle speed sensor |
| CN215641326U (en) * | 2021-06-03 | 2022-01-25 | 瑞安市金洲汽车配件有限公司 | Anti-loose ABS type electromagnetic inductor |
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Denomination of invention: An accurate speed sensor Effective date of registration: 20230105 Granted publication date: 20220527 Pledgee: Chengdong Branch of Nanjing Bank Co.,Ltd. Pledgor: NANJING KJT ELECTRIC CO.,LTD. Registration number: Y2022980029278 |