CN201682478U - Gear switch of mechanical gearbox - Google Patents
Gear switch of mechanical gearbox Download PDFInfo
- Publication number
- CN201682478U CN201682478U CN2010201004897U CN201020100489U CN201682478U CN 201682478 U CN201682478 U CN 201682478U CN 2010201004897 U CN2010201004897 U CN 2010201004897U CN 201020100489 U CN201020100489 U CN 201020100489U CN 201682478 U CN201682478 U CN 201682478U
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- Prior art keywords
- push rod
- output
- control circuit
- housing
- gear
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Abstract
The utility model provides a gear switch of a mechanical gearbox, which is stable and durable, and comprises a hollow casing, wherein the inside of the casing is divided into a front chamber and a rear chamber; a push rod capable of axially moving along the casing is arranged in the front chamber; the front end of the push rod extends out of the casing; the push rod is propped against the rear wall of the front chamber through a return spring; a metal induction part is arranged at the rear end of the push rod in a projecting manner; a circuit board and a steel magnet positioned behind the circuit board are arranged on the front wall of the rear chamber; a Hall sensor and a control circuit are arranged on the circuit board; a power source terminal, a grounding terminal and an output terminal of the control circuit are led out to the casing through conducting wires and are connected with one socket; and due to the compression stroke of the return spring, the Hall sensor causes the control circuit to output different signals according to the position change of the induction part of the push rod. By adopting the non-contact type Hall sensor as a detection component, the gear switch of the mechanical gearbox has little possibility to lose effectiveness during working process, and has good stability and reliable properties.
Description
Technical field
The utility model belongs to field of automobile, specially refers to the gear on-off of mechanical gearbox.
Background technology
Along with the raising of development of science and technology and public's environmental consciousness, increasing people begins to pay close attention to hybrid power system (as: ISG, BSG) and the engine start and stop technology that helps reducing automobile fuel consumption.Major part all is the automobile of manual transmission in the automobile of usefulness at present, if be furnished with adding hybrid power system or engine start and stop technology on the car load of manual transmission, the gear that just must know gearbox is neutral or is keeping off.Patent " a kind of Hybrid Vehicle neutral position switch " (patent No.: 200810127864.4) disclose a kind of Hybrid Vehicle neutral position switch, its structure is as follows: " this device comprises the housing that is fixedly installed on the gearbox; an end of positioning seat and the gearshift of hull outside refer to constitute to lean cooperate; the other end is arranged in the housing and is connected with the pin base of insulation on being fixed on housing by first back-moving spring; positioning seat constitutes and can cooperate along axially movable the reclining of housing with housing; positioning seat is provided with the reed that extends to pin base near an end of pin base; its axial restraint of pin base upper edge has the neutral pin that links to each other with the circuit of hull outside respectively and keeping off pin, and the compression travel of first back-moving spring makes reed can be respectively link to each other to send the neutral signal and to keep off signal with the neutral pin and keeping off pin." though above-mentioned neutral position switch can provide the information of gear, its switch element is made of reed, and in long-term frequent shift process, reed is easily because factors such as fatigue are aging even follow the string or fracture, thereby causes switch failure.
The utility model content
The purpose of this utility model is to propose a kind of gear on-off of stablizing durable mechanical gearbox.
The gear on-off of mechanical gearbox of the present utility model comprises hollow housing, key is to be separated in the described housing front chamber and rear chamber, being provided with in the described front chamber can be along the push rod of housing axial motion, the front end of described push rod stretches out outside the housing, push rod offsets by the rear wall of back-moving spring and front chamber, the outstanding induction part that is provided with metal in the rear end of push rod; The antetheca place of described rear chamber is provided with the gear sensing unit, described gear sensing unit comprises circuit board and is positioned at the magnet steel at circuit board rear, described circuit board is provided with Hall element and control circuit, and the power end of described control circuit, earth terminal and output lead to outside the housing and with a socket by lead and be connected; The compression travel of described back-moving spring makes Hall element can make the different signal of control circuit output according to the change in location of push rod induction part.
In use, housing and gearbox are fixed, and made the gearshift of push rod and gearbox inside refer to offset, like this when gearshift, the action that push rod just refers to along with gearshift and in housing along the housing axial motion, make the metal induction part of putting back-end and the distance of magnet steel change.The metal induction part of push rod and Hall element all are in the magnetic field range of magnet steel, when the metal induction part moves, can cause magnetic field to change, and Hall element is a kind of transducer that can realize the magnetoelectricity conversion, can detect magnetic field and variation thereof with them.As shown in Figure 4, when the magnetic flux density that adds surpasses operating point Bop, the Hall element output low level, when magnetic flux density drops to operating point Bop when following, the Hall element output level is constant, and in the time of will dropping to point of release Brp, Hall element is a high level by low level transition just always.Hysteresis between Bop and the Brp makes switch motion more reliable.Utilize above-mentioned principle, just can two operating points of Hall element Bop, Brp and gearbox be in neutral, corresponding in the push rod position of retaining during state, by Hall element the detection of changes of magnetic field be known the shifting state of gearbox with realization through debugging.When gearbox be in neutral, at retaining during two kinds of different conditions, Hall element makes the different signal of control circuit output, can judge the shifting state of gearbox by the output signal that detects control circuit.Hybrid power BSG and ISG system utilize this signal to carry out computing, judge whether gearbox is in neutral gear position, determine that further engine could idle stop, to play province's functional oil; Engine start and stop technology utilizes this signal can judge that engine could stop working.
Hall element has sound construction, volume is little, the life-span is long, power consumption is little, vibration resistance, the pollution of not being afraid of dust, greasy dirt and salt fog etc. or the advantage of corrosion, and owing to its measuring process need not to contact with other contacts, therefore compare with " a kind of Hybrid Vehicle neutral position switch " in the background technology, the problem that can in use lose efficacy is more not reliability and durability.
Above-mentioned control circuit can followingly be provided with: control circuit has power end, earth terminal, first output and second output, and the power end of control circuit links to each other with the power pins of Hall element, and earth terminal links to each other with the ground pin of Hall element; The output of Hall element is divided into two-way, one the tunnel links to each other with first output, another road is successively with after a resistance, a diode are connected, link to each other with the base stage of a triode, the collector electrode of described triode links to each other with second output, base stage links to each other with earth terminal by an electric capacity, and emitter links to each other with earth terminal, and described first output links to each other with power end by pull-up resistor respectively with second output.The operation principle of this control circuit is as follows: when gearbox was in neutral, the induction part of push rod was far away apart from magnet steel, Hall element output high level, first output output high level, triode conducting, the second output output low level at this moment; When gearbox in when retaining, the induction part of push rod is nearer apart from magnet steel, the Hall element output low level, the first output output low level, triode disconnects, second output output this moment high level.Control circuit can outwards send two paths of signals like this, and this two paths of signals changes with the gearbox neutral with in the switching of retaining state, and its state is complementary all the time, therefore can be used as checking, avoids misjudging.
Described housing utilizes annular gasket to be separated into front chamber and rear chamber, and described push rod offsets by back-moving spring and pad, and the internal diameter of described annular gasket is greater than the diameter of push rod induction part.Like this along with the variation of gearbox gear, the push rod induction part can stretch into or away from annular gasket, thereby changes the distance with magnet steel.
Be provided with plastic sheath in the rear chamber of described housing, described circuit board is fixed on the plastic sheath, and the rear portion of described plastic sheath utilizes the end cap sealing, and described magnet steel is installed on the end cap.Utilize plastic sheath to fix circuit board, can play certain cushioning effect, reduce the influence of automobile vibration, guarantee the control circuit reliable operation components and parts on the circuit board; End cap seals plastic sheath, can prevent to enter in the plastic sheath dust.
The outside of described housing rear end also is with rubber sheath, can further prevent to enter in the housing dust.
The part of the lead of described control circuit outside housing is with bellows, is not damaged with guardwire.
The gear on-off of mechanical gearbox of the present utility model is simple in structure, convenient for installation and maintenance, because adopted contactless Hall element to be used as detecting element, so be difficult for losing efficacy good stability, dependable performance in the course of the work.
Description of drawings
Fig. 1 is the structural representation of the gear on-off of mechanical gearbox of the present utility model;
Fig. 2 is the control principle figure of gear on-off of the mechanical gearbox of embodiment 1;
Fig. 3 is the circuit theory diagrams of control circuit of gear on-off of the mechanical gearbox of embodiment 2;
Fig. 4 is the fundamental diagram of Hall element.
Embodiment
Describe the utility model in detail below in conjunction with specific embodiments and the drawings.
Embodiment 1:
As shown in Figure 1, the gear on-off of the mechanical gearbox of present embodiment comprises hollow housing 1, housing 1 utilizes annular gasket 6 to be separated into front chamber 2 and rear chamber 3, being provided with in the front chamber 2 can be along the push rod 4 of housing 1 axial motion, the front end of push rod 4 stretches out outside the housing 1, push rod 4 offsets by back-moving spring 5 and annular gasket 6, the outstanding induction part 15 that is provided with metal in the rear end of push rod 4, and the internal diameter of described annular gasket 6 is greater than the diameter of push rod induction part 15; The antetheca place of described rear chamber 3 is provided with the gear sensing unit, described gear sensing unit comprises circuit board 7 and is positioned at the magnet steel 8 at circuit board rear, described circuit board 7 is provided with Hall element 9 and control circuit, and the power end of described control circuit, earth terminal and output lead to outside the housing and with socket 14 by lead and be connected; The compression travel of described back-moving spring 5 makes Hall element 9 can make the different signal of control circuit output according to the change in location of push rod induction part.
Be provided with plastic sheath 10 in the rear chamber of housing 1, described circuit board 7 is fixed on the plastic sheath 10, and the rear portion of described plastic sheath 10 utilizes end cap 11 sealings, and described magnet steel 8 is installed on the end cap 11.Utilize plastic sheath 10 to fix circuit board 7, can play certain cushioning effect, reduce the influence of automobile vibration, guarantee the control circuit reliable operation components and parts on the circuit board 7; End cap 11 can prevent to enter in the plastic sheath dust with plastic sheath 10 sealings.
The outside of housing 1 rear end also is with rubber sheath 12, can further prevent to enter dust in the housing 1.
The part of the lead of control circuit outside housing 1 is with bellows 13, is not damaged with guardwire.
In use, housing and gearbox are fixed, and made the gearshift of push rod and gearbox inside refer to offset.As shown in Figure 2, when gearshift, the action that push rod just refers to along with gearshift and in housing along the housing axial motion, make the metal induction part of putting back-end and the distance of magnet steel change, the metal induction part of push rod and Hall element all are in the magnetic field range of magnet steel, when the metal induction part moves, can cause magnetic field to change.When gearbox be in neutral, at retaining during two kinds of different conditions, the signal that Hall element output is different can be judged the shifting state of gearbox by detecting this output signal.The control circuit of present embodiment only need link to each other power end with the power pins of Hall element, earth terminal links to each other with the ground pin of Hall element, and output links to each other with the output of Hall element and gets final product.
Embodiment 2:
As shown in Figure 3, as different from Example 1, the following setting of the control circuit of present embodiment and Hall element: control circuit has power end, earth terminal, first output and second output, the power end of control circuit links to each other with the power pins of Hall element U1, and earth terminal links to each other with the ground pin of Hall element U1; The output of Hall element U1 is divided into two-way, one the tunnel links to each other with first output, another road is successively with after a resistance R 1, a diode D1 connect, link to each other with the base stage of a triode Q1, the collector electrode of described triode Q1 links to each other with second output, base stage links to each other with earth terminal by a capacitor C 1, and emitter links to each other with earth terminal, and described first output links to each other with power end by pull-up resistor R2, R3 respectively with second output.The operation principle of this control circuit is as follows: when gearbox was in neutral, the induction part of push rod was far away apart from magnet steel, and Hall element U1 exports high level, first output output high level, triode Q1 conducting, the second output output low level at this moment; When gearbox in when retaining, the induction part of push rod is nearer apart from magnet steel, Hall element U1 output low level, the first output output low level, triode Q1 disconnects, second output output this moment high level.Control circuit can outwards send two paths of signals like this, and this two paths of signals changes with the gearbox neutral with in the switching of retaining state, and its state is complementary all the time, therefore can be used as checking, avoids misjudging.
Claims (6)
1. the gear on-off of a mechanical gearbox, comprise hollow housing, it is characterized in that being separated in the described housing front chamber and rear chamber, being provided with in the described front chamber can be along the push rod of housing axial motion, the front end of described push rod stretches out outside the housing, push rod offsets by the rear wall of back-moving spring and front chamber, the outstanding induction part that is provided with metal in the rear end of push rod; The antetheca place of described rear chamber is provided with the gear sensing unit, described gear sensing unit comprises circuit board and is positioned at the magnet steel at circuit board rear, described circuit board is provided with Hall element and control circuit, and the power end of described control circuit, earth terminal and output lead to outside the housing and with a socket by lead and be connected; The compression travel of described back-moving spring makes Hall element can make the different signal of control circuit output according to the change in location of push rod induction part.
2. the gear on-off of mechanical gearbox according to claim 1, it is characterized in that described control circuit has power end, earth terminal, first output and second output, the power end of control circuit links to each other with the power pins of Hall element, and earth terminal links to each other with the ground pin of Hall element; The output of Hall element is divided into two-way, one the tunnel links to each other with first output, another road is successively with after a resistance, a diode are connected, link to each other with the base stage of a triode, the collector electrode of described triode links to each other with second output, base stage links to each other with earth terminal by an electric capacity, and emitter links to each other with earth terminal, and described first output links to each other with power end by pull-up resistor respectively with second output.
3. the gear on-off of mechanical gearbox according to claim 1 and 2, it is characterized in that described housing utilizes annular gasket to be separated into front chamber and rear chamber, described push rod offsets by back-moving spring and pad, and the internal diameter of described annular gasket is greater than the diameter of push rod induction part.
4. the gear on-off of mechanical gearbox according to claim 3, it is characterized in that being provided with plastic sheath in the rear chamber of described housing, described circuit board is fixed on the plastic sheath, and the rear portion of described plastic sheath utilizes the end cap sealing, and described magnet steel is installed on the end cap.
5. the gear on-off of mechanical gearbox according to claim 4 is characterized in that the outside of described housing rear end also is with rubber sheath.
6. the gear on-off of mechanical gearbox according to claim 5 is characterized in that the part of lead outside housing of described control circuit is with bellows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201004897U CN201682478U (en) | 2010-01-22 | 2010-01-22 | Gear switch of mechanical gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201004897U CN201682478U (en) | 2010-01-22 | 2010-01-22 | Gear switch of mechanical gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201682478U true CN201682478U (en) | 2010-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201004897U Expired - Fee Related CN201682478U (en) | 2010-01-22 | 2010-01-22 | Gear switch of mechanical gearbox |
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| Country | Link |
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| CN (1) | CN201682478U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494130A (en) * | 2011-12-06 | 2012-06-13 | 芜湖华泰汽车仪表有限公司 | Neutral position switch for hybrid vehicle |
| CN106555874A (en) * | 2015-09-29 | 2017-04-05 | 长城汽车股份有限公司 | A kind of manual transmission neutral alignment system, variator and automobile |
| CN107166029A (en) * | 2017-05-27 | 2017-09-15 | 嘉默传感技术(上海)有限公司 | A kind of application of programmable hall in internal magnetization neutral switch |
| CN114837513A (en) * | 2022-05-06 | 2022-08-02 | 浙江久易电子科技股份有限公司 | Novel door opener and control circuit thereof |
-
2010
- 2010-01-22 CN CN2010201004897U patent/CN201682478U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494130A (en) * | 2011-12-06 | 2012-06-13 | 芜湖华泰汽车仪表有限公司 | Neutral position switch for hybrid vehicle |
| CN106555874A (en) * | 2015-09-29 | 2017-04-05 | 长城汽车股份有限公司 | A kind of manual transmission neutral alignment system, variator and automobile |
| CN107166029A (en) * | 2017-05-27 | 2017-09-15 | 嘉默传感技术(上海)有限公司 | A kind of application of programmable hall in internal magnetization neutral switch |
| CN114837513A (en) * | 2022-05-06 | 2022-08-02 | 浙江久易电子科技股份有限公司 | Novel door opener and control circuit thereof |
| CN114837513B (en) * | 2022-05-06 | 2023-11-21 | 浙江久易电子科技股份有限公司 | Door operator and control circuit thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101222 Termination date: 20150122 |
|
| EXPY | Termination of patent right or utility model |