WO2011093044A1 - リザーバタンクおよびこれを用いたブレーキ装置 - Google Patents
リザーバタンクおよびこれを用いたブレーキ装置 Download PDFInfo
- Publication number
- WO2011093044A1 WO2011093044A1 PCT/JP2011/000319 JP2011000319W WO2011093044A1 WO 2011093044 A1 WO2011093044 A1 WO 2011093044A1 JP 2011000319 W JP2011000319 W JP 2011000319W WO 2011093044 A1 WO2011093044 A1 WO 2011093044A1
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- WIPO (PCT)
- Prior art keywords
- magnet
- float
- reservoir tank
- hydraulic fluid
- liquid level
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
- B60T11/16—Master control, e.g. master cylinders
- B60T11/22—Master control, e.g. master cylinders characterised by being integral with reservoir
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
- B60T11/26—Reservoirs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
- B60T17/225—Devices for monitoring or checking brake systems; Signal devices brake fluid level indicators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
- H01H36/02—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding actuated by movement of a float carrying a magnet
Definitions
- the present invention relates to a technical field of a reservoir tank that stores hydraulic fluid and is used in a hydraulic brake device and a hydraulic clutch device that utilize hydraulic pressure such as hydraulic pressure, and a technical field of a brake device that uses the reservoir tank.
- a liquid level detection sensor is provided in the reservoir tank.
- the liquid level detection sensor detects this and displays it on the liquid level display device. It is like that.
- the hydraulic fluid is replenished in the reservoir tank, and the liquid amount in the reservoir tank is ensured to be equal to or higher than a predetermined liquid amount.
- a normally closed reed switch is installed on the upper surface of the reservoir tank, and a magnet is installed on the float that moves up and down according to the level of the hydraulic fluid in the reservoir tank.
- a liquid amount detection sensor is known (see, for example, Patent Document 1).
- the float In the liquid amount detection sensor described in Patent Document 1, the float is guided up and down by a guide suspended from the inner surface of the upper end of the reservoir tank.
- the float moves up, the magnet approaches the reed switch, and the reed switch is turned off (opened) by its magnetic force.
- the warning light is turned off.
- the float moves down, the magnet moves away from the reed switch, and the magnetic force does not affect the reed switch.
- the reed switch is turned on by itself. (Closed). As a result, the warning light is turned on.
- the magnet is provided at a substantially central position in the vertical direction of the float, so that the vertical dimension of the float is set to be relatively small.
- the vertical dimension of the float is small, if the float is tilted due to liquid level fluctuations such as when the vehicle is tilted, the frictional resistance between the float and the guide becomes large and the float is likely to be caught on the guide. For this reason, it may be difficult to move the float up and down smoothly and reliably in conjunction with the change in the liquid level.
- the magnet is also moved far away from the reed switch when the reed switch is turned on / off. For this reason, in order to reliably turn on and off the reed switch, it is necessary to increase the magnetic force of the magnet, which increases the cost.
- the present invention has been made in view of such circumstances, and an object thereof is to move the light-extinguishing liquid surface further from the reed switch while reliably moving the float up and down to stably operate the reed switch.
- the reservoir tank of the present invention includes a liquid amount detection unit that detects the stored hydraulic fluid, and the liquid level detection unit has a predetermined liquid level.
- a reed switch that turns on when the liquid level is higher than a predetermined liquid level, and a float that is provided with a magnet that turns the reed switch on and off and moves up and down according to the liquid level of the working liquid.
- a reservoir tank in which the reed switch is provided above the magnet, and the float is provided on a float body, a magnet column protruding upward from the float body, and an upper end of the magnet column. It has the magnet support part which supports a magnet, and the support
- the reservoir tank of the present invention is characterized in that the float is integrally formed of a resin, and the support reinforcing member has a draft angle for pulling out the mold when the mold is released. Furthermore, the reservoir tank of the present invention is characterized in that the draft angle is formed in a direction that does not hinder the flow of the resin when the resin is filled.
- the reservoir tank of the present invention includes a liquid level detection unit that detects the stored hydraulic fluid, and the liquid level detection unit is turned on when the liquid level of the stored hydraulic fluid is equal to or lower than a predetermined liquid level.
- a reed switch that turns off when the liquid level is higher than a predetermined liquid level, and a float that is provided with a magnet that turns the reed switch on and off and moves up and down in accordance with the liquid level of the working fluid;
- the float is a float main body, a magnet post projecting upward from the float main body, and a magnet support portion provided at an upper end of the magnet post to support the magnet
- the magnet support is formed in a trapezoidal shape when viewed from the longitudinal direction of the magnet. That.
- the brake device of the present invention operates with a reservoir tank that stores hydraulic fluid, a master cylinder that is supplied with hydraulic fluid in the reservoir tank and generates brake pressure during operation, and hydraulic pressure from the master cylinder.
- the reservoir tank is at least one of the above-described reservoir tanks of the present invention.
- the reed switch is disposed above the magnet, the magnet is supported on the upper end of the float by the magnet support, and the float is further connected to the first guide and the first guide. It is moved up and down while being guided by guide No. 2.
- the vertical dimension of the float can be increased by supporting the magnet on the upper end of the float by the magnet support. Therefore, the float can be moved up and down smoothly and reliably according to the liquid level of the working fluid.
- the reinforcing rib has an angle draft so that its thickness decreases toward the tip. Accordingly, it is possible to suppress deformation bending of the magnet support when the mold slides at the time of mold release, and the float can suppress molding shrinkage even if a reinforcing rib is provided. Therefore, since the deformation of the float is suppressed, the operability of the float can be further effectively improved. In addition, since the reinforcing rib has the draft as described above, the resistance of the reinforcing rib can be reduced with respect to the movement of the hydraulic fluid in the reservoir tank in the vehicle longitudinal direction.
- the posture of the float body can be stabilized even when the hydraulic fluid moves in the vehicle front-rear direction, and the malfunction of the reed switch when the liquid level drops (when the hydraulic fluid is reduced) can be suppressed. Furthermore, since the draft angle of the reinforcing ribs is formed in a direction that does not hinder the flow of the resin when filling the resin, the filling property of the resin can be improved, and the insufficient filling or poor filling of the resin can be reduced. Is possible.
- the magnet since the magnet is provided at the upper end of the float, the magnet can be brought close to the reed switch. Thereby, the light-extinguishing liquid level can be kept away from the reed switch. Accordingly, it is possible to set a larger storage capacity of the hydraulic fluid in the reservoir tank. Moreover, even if the extinguishing liquid level is kept away from the reed switch, the position of the magnet on the float extinguishing liquid level can be brought closer to the reed switch. Thereby, the operational reliability of the reed switch can be increased. As a result, the magnetic force of the magnet can be reduced, and the cost can be reduced.
- the upper part of the float is constituted by the magnet support, the pressure receiving area of the working fluid of the magnet support can be reduced.
- the force applied to the magnet column by the moving hydraulic fluid can be suppressed. Therefore, the influence on the float due to the rapid movement of the hydraulic fluid can be reduced, the malfunction of the reed switch can be more effectively prevented, and the erroneous lighting of the warning lamp can be more reliably prevented.
- the float and magnet of the reservoir tank can move up and down more reliably. Can be prevented.
- the amount of hydraulic fluid in the reservoir tank can be more reliably detected by the fluid amount detection unit, so that the brake operation can be performed more reliably.
- FIG. 2A is a partially cutaway view of the reservoir tank of the first example
- FIG. 2B is a longitudinal sectional view in the longitudinal direction of the reservoir tank of the first example
- 2A is a sectional view taken along line IIIA-IIIA in FIG. 2A
- FIG. 2B is a view of the guide viewed from below
- FIG. 2C is a sectional view taken along line IIIC-IIIC in FIG. ) Is a cross-sectional view taken along line IIID-IIID in FIG.
- FIG. 4 shows a third example of the embodiment of the reservoir tank of the present invention, in which (a) is a cross-sectional view similar to FIG. 3 (a), and (b) is a cross-sectional view taken along the line VIIB-VIIB in FIG.
- FIG. 1 is a view schematically showing a brake device provided with a first example of an embodiment of a reservoir tank according to the present invention.
- the hydraulic brake device 1 is basically the same as a conventionally known two-system hydraulic brake device. That is, the hydraulic brake device 1 includes a brake pedal 2, a booster 3, a tandem master cylinder 4, a reservoir tank 5, and a brake cylinder 6.
- the booster 3 When the driver depresses the brake pedal 2, the booster 3 operates to boost and output the pedal depression force with a predetermined servo ratio.
- the primary piston 4a of the tandem master cylinder 4 is operated by the output of the booster 3 to supply the hydraulic fluid in the primary hydraulic fluid chamber 4b to the brake cylinder 6 of one system, and the secondary piston 4c is operated to activate the secondary
- the hydraulic fluid in the hydraulic fluid chamber 4d is fed to the brake cylinder 6 of the other system.
- the tandem master cylinder 4 When the loss stroke of each brake system disappears, the tandem master cylinder 4 generates hydraulic pressure.
- the hydraulic pressure of the tandem master cylinder 4 is transmitted to each brake cylinder 6, each brake cylinder 6 generates a braking force, and each wheel 7 is braked.
- FIG. 2 (a) is a partially cutaway view of the reservoir tank of the first example
- FIG. 2 (b) is a longitudinal sectional view in the longitudinal direction of the reservoir tank of the first example.
- the height of the bottom of each part refers to the height when the reservoir tank is attached to the vehicle body and the vehicle is leveled.
- the reservoir tank 5 used in the brake device 1 of the first example stores hydraulic fluid to be supplied to the tandem master cylinder 4 and opens upward.
- the container-like lower half body 8 has an upper half body 9 that closes the upper end opening of the lower half body 8.
- the upper half body 9 is provided with a hydraulic fluid inlet 10, and the hydraulic fluid inlet 10 is opened and closed by a cap 11 (shown in FIG. 1).
- the lower half body 8 of the first example includes a hydraulic fluid supply unit 12, a hydraulic fluid storage chamber 13, and a hydraulic fluid passage 14 provided between the hydraulic fluid supply unit 12 and the hydraulic fluid storage chamber 13. is doing.
- the upper surface of the lower half 8 and the lower surface of the upper half 9 are thermally welded, and the upper end opening of the lower half 8 is closed. Therefore, the hydraulic fluid is supplied to the hydraulic fluid supply unit 12 through the hydraulic fluid inlet 10 of the upper half 9.
- the hydraulic fluid storage chamber 13 includes a fluid amount detection chamber 15, a primary hydraulic fluid storage chamber 16, and a secondary hydraulic fluid storage chamber 17.
- the hydraulic fluid inlet 10 When the reservoir tank 5 is attached to the vehicle body via the tandem master cylinder 4, the hydraulic fluid inlet 10, the hydraulic fluid supply unit 12, the fluid level detection chamber 15, the secondary hydraulic fluid storage chamber 17, and the primary hydraulic fluid
- the storage chamber 16 is disposed in this order from the front of the vehicle (left side in FIG. 2B) to the rear of the vehicle (right side in FIG. 2B).
- the working fluid supply unit 12 is always in communication with the fluid amount detection chamber 15 through the working fluid passage 14. Further, the liquid amount detection chamber 15 is always in communication with the secondary hydraulic fluid storage chamber 17. Further, the hydraulic fluid supply unit 12 is always in communication with the primary hydraulic fluid storage chamber 16 through another path of the hydraulic fluid passage 14.
- the primary hydraulic fluid storage chamber 16 and the secondary hydraulic fluid storage chamber 17 are partitioned by a partition wall 18, but are always in communication with each other above the upper end 18 a of the partition wall 18.
- the hydraulic fluid in the primary hydraulic fluid storage chamber 16 is supplied to the primary hydraulic fluid chamber 4b of the master cylinder 4 through the primary hydraulic fluid supply port 16a, and the hydraulic fluid in the secondary hydraulic fluid storage chamber 17 is the secondary hydraulic fluid supply port 17a.
- a liquid amount detection unit 19 is provided at a position corresponding to the liquid amount detection chamber 15.
- the liquid amount detection unit 19 is provided substantially at the center of the lower half 8 in the front-rear direction (vehicle front-rear direction), and detects the amount of hydraulic fluid stored in the reservoir tank 5.
- the liquid amount detection unit 19 includes a float 23 disposed in a float chamber 21 surrounded by a cylindrical partition wall 20 and having a magnet 22 at the upper end, and a liquid amount.
- a reed switch 24 provided on the outer side of the upper half 9 at the upper part of the detection unit 19 and operated by a magnet 22, a columnar (round bar) guide 25, a trapezoidal guide 26, and a bottom surface side adsorption prevention And a protrusion 27.
- the float chamber 21 is always in communication with the liquid amount detection chamber 15 on the outer peripheral side of the cylindrical partition wall 20 through a relatively small diameter communication hole 20 a formed in the cylindrical partition wall 20. Therefore, when the hydraulic fluid is stored in the reservoir tank 5 until the liquid level is located above the communication hole 20a, the hydraulic fluid enters the float chamber 21 through the communication hole 20a. In that case, the height of the hydraulic fluid in the float chamber 21 and the height of the hydraulic fluid in the fluid amount detection chamber 15 are always the same. Further, even if the hydraulic fluid in the reservoir tank 5 outside the cylindrical partition wall 20 suddenly moves due to, for example, sudden braking or turning of the vehicle, the hydraulic fluid in the float chamber 21 is reduced by the throttle action of the communication hole 20a. Liquid level fluctuation is suppressed. Thereby, malfunction of the reed switch 24 is prevented.
- FIG. 4 shows the float and magnet of the first example, where (a) is a front view, (b) is a bottom view, (c) is a top view, and (d) is along the IVD-IVD line in (a).
- Sectional view (e) is a sectional view taken along line IVE-IVE in (d).
- the float 23 includes a float body 23a, a rectangular shape in a side view and a cross-sectional rectangle or a circular cross-section that protrudes upward from the upper end of the float body 23a. It has a pair of magnet columns 23b, 23c and a rectangular container-shaped magnet support portion 23d provided at the upper ends of these magnet columns 23b, 23c.
- the float body 23a includes a pair of upper and lower large-diameter circular outer peripheral portions 23a 1 and 23a 2 and a small-diameter circular outer peripheral portion 23a 3 provided concentrically between the large-diameter circular outer peripheral portions 23a 1 and 23a 2. Have. At the center of the large-diameter circular outer peripheral portions 23a 1 and 23a 2 and the small-diameter circular outer peripheral portion 23a 3, a circular guide hole 23a 4 penetrating in the vertical direction is formed.
- a pair of positioning ribs 32 and 33 has a predetermined length on the inner peripheral surface of the cylindrical partition wall 20, upward from the bottom surface to the float chamber 21, and the diameter direction of the float chamber 21. It extends opposite to each other.
- FIG. 3 (a), FIG. 4 (a), (b) and (d) the the outer periphery of the large diameter shaped outer peripheral portion 23a 1 of the float 23, these positioning ribs 32 and 33 Are provided with positioning long grooves 34 and 35, respectively. Therefore, when the float 23 is accommodated in the float chamber 21, the positioning long grooves 34 and 35 are fitted to the positioning ribs 32 and 33, whereby the float 23 is positioned in the circumferential direction.
- the magnet 22 is positioned in the circumferential direction with respect to the reed switch 24.
- the magnet can be positioned in the circumferential direction with respect to the reed switch 24, so that the reed switch 24 is turned on and off more reliably by the magnet. be able to.
- a predetermined length of the aforementioned positioning ribs 32 and 33, large-diameter shaped outer peripheral portion 23a 2 of the upper is set to a length that does not interfere when the float 23 comes to the lowermost position.
- the magnet columns 23b and 23c are arranged at a predetermined interval from each other.
- the pressure receiving area of the hydraulic fluid in the magnet columns 23b and 23c is reduced, and even if the hydraulic fluid in the reservoir tank 5 moves suddenly as described above, it is added to the magnet columns 23b and 23c by the moving hydraulic fluid. Force is suppressed. Therefore, the influence on the float 23 due to the rapid movement of the hydraulic fluid is reduced, and the malfunction of the reed switch 24 is prevented.
- each magnet support 23b, 23c has a substantially right triangular plate-shaped reinforcing rib on both sides thereof with a small upper width and a large lower width.
- 23b 1 , 23b 2 ; 23c 1 , 23c 2 (corresponding to the strut reinforcing member of the present invention) are provided.
- these reinforcing ribs 23b 1 and 23b 2 ; 23c 1 and 23c 2 are extended in the sliding direction and the vertical direction of the mold.
- Reinforcing ribs 23b 1 and 23b 2 ; 23c 1 and 23c 2 reinforce the magnet columns 23b and 23c, respectively.
- pillar 23b, 23c is suppressed those bending.
- the float main body 23a, the magnet posts 23b and 23c, the reinforcing ribs 23b 1 and 23b 2 ; 23c 1 and 23c 2 , and the magnet support portion 23d are integrally molded with foamed resin.
- each of the reinforcing ribs 23b 1 , 23b 2 ; 23c 1 , 23c 2 has a draft angle of an angle ⁇ so that the thickness thereof decreases toward the tip. is doing. The draft angle is set so that the float 23 does not shrink when the mold slides when the mold is released.
- each of the reinforcing ribs 23b 1, 23b 2; also the 23c 1, 23c 2 provided the float 23 is mold shrinkage is suppressed. Further, the draft angle of each of the reinforcing ribs 23b 1 , 23b 2 ; 23c 1 , 23c 2 is formed in a direction that does not hinder the flow of the resin during resin filling. Thereby, at the time of the shaping
- a magnet 22 is fixedly supported on the magnet support portion 23d by integral molding with the float 23.
- a rectangular tube-shaped reed switch mounting portion 28 is provided integrally with the upper half body 9 on the outer surface of the upper half body 9.
- the reed switch 24 is inserted into the reed switch mounting portion 28 from the front of the drawing of FIG. 2A in the direction orthogonal to the drawing (vehicle left-right direction) (from right to left in FIG. 3A). Attached.
- the reed switch 24 is configured as a normally closed switch that is closed by itself.
- the float 22 moves up and down in the float chamber 21 as shown by a solid line and a two-dot chain line in FIG. Move.
- the liquid level of the working liquid in the float chamber 21 is also the height position of the liquid level in the reservoir tank 5. And the same height position. For this reason, the float 23 is also at a height position corresponding to the height of the liquid level. At this time, the liquid level in the float chamber 21 becomes the ON / OFF switching liquid level of the reed switch 24 (that is, the liquid level where the warning lamp is turned off), and the warning lamp does not light up.
- a convex portion 36 is formed at the upper end of the guide 25.
- This convex part 36 is a convex part for degassing at the time of resin molding of the lower half body 8.
- the resin around the guide 25 is made good by effectively venting the gas when the lower half 8 is molded with the resin, so that the outer peripheral surface of the guide 25 is finished into a smooth and clean surface.
- a concave portion 37 having the same function as the convex portion 36 can be provided at the upper end of the guide 25 instead of the convex portion 36 (for convenience of explanation, FIG. ) Shows a concave portion 37 instead of the convex portion 36).
- the bottom surface side adsorption preventing protrusion 27 is formed in a hemispherical shape and faces the bottom surface of the float chamber 21 of the lower half body 8 and faces the lower surface of the float 23. In this way, a predetermined number (four in the illustrated example) is provided. In this case, the bottom surface side adsorption preventing projections 27 are provided so as to protrude at equal intervals in the circumferential direction along concentric circles centering on the central axis of the guide 25.
- the reed switch 24, which is a normally closed switch, is disposed above the magnet 22, and the magnet 22 is provided on the upper end of the float 23 by the magnet columns 23b and 23c.
- the float 23 is moved up and down while being guided by a columnar (round bar) guide 25.
- the vertical dimension of the float 23 can be increased by supporting the magnet 22 on the upper end of the float 23 by the magnet columns 23b and 23c. Therefore, the float 23 can be moved up and down smoothly and reliably according to the liquid level of the working fluid.
- the center of gravity of the float 23 provided with the magnet 22 at the upper end is positioned upward. Even when the center of gravity is positioned upward in this way, the float 23 and the magnet 22 are moved by their own weight. It can be moved up and down smoothly with almost no inclination. Thereby, the operativity of the float 23 improves.
- reinforcing ribs 23b 1 , 23b 2 ; 23c 1 , 23c 2 are provided on the magnet columns 23b, 23c, respectively.
- the strength of the magnet columns 23b and 23c is increased by reinforcing the magnet columns 23b and 23c by the reinforcing ribs 23b 1 and 23b 2 ; 23c 1 and 23c 2 , respectively. Therefore, even if each magnet support 23b, 23c receives an external force, such as an impact or repulsive force between the magnetic forces of adjacent magnets 22, such as during the transportation of the hood 23 including the magnets 22, the fulfs 23 collide with each other. It becomes possible to suppress the bending of the magnet columns 23b and 23c. Therefore, the operability of the float 23 can be further effectively improved. Thereby, the magnet can be moved up and down in a stable posture, and the reed switch can be stably operated.
- each of the reinforcing ribs 23b 1 , 23b 2 ; 23c 1 , 23c 2 has a draft angle of an angle ⁇ such that the thickness thereof decreases toward the tip. This makes it possible to suppress deformation bending of the magnet columns 23b and 23c when the mold slides at the time of mold release, and to provide the reinforcing ribs 23b 1 and 23b 2 ; 23c 1 and 23c 2 . Even so, the float 23 can suppress molding shrinkage. Therefore, since the deformation of the float 23 is suppressed, the operability of the float 23 can be further effectively improved.
- the reinforcing ribs 23b 1 , 23b 2 ; 23c 1 , 23c 2 have the draft angle as described above, the reinforcing ribs 23b against the movement of the hydraulic fluid in the reservoir tank 5 in the longitudinal direction of the vehicle. 1 , 23 b 2 ; 23 c 1 , 23 c can be reduced in resistance. Accordingly, the posture of the float main body 23a can be stabilized even when the hydraulic fluid moves in the vehicle front-rear direction, and malfunction of the reed switch 24 when the liquid level is lowered (when the hydraulic fluid is reduced) can be suppressed. .
- each of the reinforcing ribs 23b 1 , 23b 2 ; 23c 1 , 23c 2 is formed in a direction that does not hinder the flow of the resin as the material at the time of resin filling, thereby improving the resin filling property. In addition, it is possible to reduce insufficient resin filling or poor resin filling.
- the pressure receiving area of the hydraulic fluid of the magnet columns 23b and 23c can be reduced. Therefore, even if the hydraulic fluid in the reservoir tank 5 moves suddenly due to, for example, sudden braking or turning of the vehicle, the force applied to the magnet columns 23b and 23c by the moving hydraulic fluid can be suppressed. Therefore, the influence on the float 23 due to the rapid movement of the working fluid can be reduced, the malfunction of the reed switch 24 can be more effectively prevented, and the erroneous lighting of the warning lamp can be prevented more reliably.
- the volume in the float chamber 21 can be variously changed by variously changing the lengths and diameters of the magnet columns 23b and 23c. Therefore, it is possible to respond more flexibly and more reliably to different reservoir tanks 5 depending on the type of vehicle on which the reservoir tank 5 is mounted.
- the trapezoidal guide 26 is provided integrally with the upper half 9 so that the distance of the guide surface 26a of the guide 26 facing upward is reduced, the upper end corner 23d 1 of the magnet support portion 23d, the 23d 2 is guided by the inclined guide surface 26a can be moved upward a magnet 22.
- the float 23 guided by the guide 25 and moved upward by a predetermined amount is guided by this guide 26, even if the guide amount of the float 23 by the guide 25 decreases, the float 23 can be reliably secured by the guide 26.
- the magnet 22 can be centered by regulating the position of the magnet 22 with respect to the reed switch 24.
- the reed switch 24 can be turned on and off more reliably by the weight of the float 23 and the magnet 22 by their own weight.
- the magnet 22 since the magnet 22 is provided at the upper end of the float 23, the magnet 22 can be brought close to the reed switch 24. Thereby, the light-extinguishing liquid level can be kept away from the reed switch 24. Accordingly, it is possible to set the working fluid storage capacity of the reservoir tank 5 larger. Moreover, even if the extinguishing liquid level is kept away from the reed switch 24, the position of the magnet 22 on the extinguishing liquid level of the float 23 can be brought closer to the reed switch 24. Thereby, the operational reliability of the reed switch 24 can be increased. As a result, the magnetic force of the magnet can be reduced, and the cost can be reduced.
- the guide 25 is projected upward from the bottom surface of the float chamber 21, and the guide 26 suspended from the inner surface of the upper half body 9 is formed of a trapezoidal thin plate. However, it is possible to suppress the occurrence of air accumulation.
- sliding resistance can be applied to the float 23 when the float 23 moves up and down.
- hysteresis can be generated in the on / off operation of the reed switch 24. Accordingly, malfunction of the reed switch 24 can be prevented, and erroneous lighting of the warning lamp can be prevented.
- This sliding resistance is set so as not to affect the certainty of the vertical movement of the float 23.
- the cylindrical partition wall 20 is caused by sudden braking or sudden turning of the vehicle. Even if the working fluid in the external reservoir tank 5 suddenly moves, the fluid level fluctuation of the working fluid in the float chamber 21 can be suppressed by the throttling action of the communication hole 20a. Thereby, malfunctioning of the reed switch 24 can be prevented, and erroneous lighting of the warning lamp can be prevented.
- FIG. 6A and 6B show a second example of the embodiment of the reservoir tank of the present invention.
- FIG. 6A is a cross-sectional view similar to FIG. 3A
- FIG. 6B is a cross-sectional view taken along line VIB-VIB in FIG. It is.
- the same components as those described before that example are denoted by the same reference numerals, and detailed description thereof is omitted.
- the magnet columns 23b and 23c are formed in a rectangular shape in a side view and a rectangular cross section or a circular cross section.
- this second example is shown in the reservoir tank 5
- each of the magnet columns 23 b and 23 c is formed in a trapezoidal shape in a side view and a rectangular cross section.
- the magnet columns 23b and 23c are formed in a trapezoidal shape when viewed from the side, so that the strength of the magnet columns 23b and 23c is increased as compared with the first example. That is, each magnet support 23b, 23c of the second example has a high strength structure.
- the relative height position of the float main body 23a with respect to the height position of the extinguishing liquid level is the relative height position of the float main body 23a with respect to the height position of the extinguishing liquid level in the first example shown in FIG. Is different. That is, in the first example, the upper surface of the float main body 23a is positioned slightly above the height position of the extinguishing liquid level, but in the reservoir tank 3 of the second example, the upper surface 23a 5 of the float main body 23a is the extinguishing liquid level. It is located below the height position.
- the relative height position of the extinguishing liquid level with respect to the height position of the magnet 22 of the first example is the same as the relative height position of the extinguishing liquid level with respect to the height position of the magnet 22 of the second example. Therefore, in the reservoir tank 5 of the second example, the heights of the magnet columns 23b and 23c are higher than the heights of the magnet columns 23b and 23c of the first example.
- the hydraulic fluid passage 38, 39 is vertical slit having a predetermined number (two in the illustrated example) Has been.
- the hydraulic fluid passages 38 and 39 are provided at equal intervals in the circumferential direction.
- each of the magnet columns 23b and 23c has a high strength structure
- the reinforcing ribs 23b 1 and 23b 2 ; 23c 1 and 23c 2 of the first example are not provided.
- the positioning ribs 32 and 33 and the positioning long grooves 34 and 35 of the first example are not provided, but the positioning ribs 32 and 33 and the positioning long grooves 34 and 35 of the first example are also provided in the second example.
- the hydraulic fluid passages 38 and 39 can be provided in the same manner in the second example.
- Other configurations and other operational effects of the reservoir tank 5 of the second example are the same as those of the first example.
- FIGS. 7A and 7B show a third example of the embodiment of the reservoir tank of the present invention, in which FIG. 7A is a sectional view similar to FIG. 3A, and FIG. 7B is a sectional view taken along line VIIB-VIIB in FIG. It is.
- the relative height position of the extinguishing liquid level with respect to the height position of the magnet 22 is the height of the magnet 22 of the first example. It is different from the relative height position of the extinguishing liquid level with respect to the position. That is, the relative height position of the extinguishing liquid level with respect to the height position of the magnet 22 of the third example is smaller than that of the first example.
- the upper protrusion of the upper surface 23a 5 of the float body 23a with respect to the height position of the off liquid level of the third embodiment are the same as the above amount of projection of the first example. Therefore, in the reservoir tank 5 of the third example, the heights of the magnet columns 23b and 23c are set lower than the heights of the magnet columns 23b and 23c of the first example. As described above, the strength of the magnet columns 23b and 23c is increased by lowering the magnet columns 23b and 23c as compared to the first example. That is, each magnet support 23b, 23c in the third example has a high strength structure.
- the magnet struts 23b and 23c have a high-strength structure. Therefore, the reinforcing ribs 23b 1 and 23b 2 ; 23c 1 and 23c 2 of the first example are not provided. However, it becomes possible to suppress the bending deformation of each magnet support 23b, 23c.
- Other configurations and other operational effects of the reservoir tank 5 of the third example are the same as those of the second example.
- this invention is not limited to the above-mentioned example, A various design change is possible within the range of the matter described in the claim.
- the reservoir tank according to the present invention is used in a hydraulic brake device or a hydraulic clutch device that uses hydraulic pressure such as hydraulic pressure, and can be suitably used as a reservoir tank that stores hydraulic fluid.
- the brake device according to the present invention can be suitably used for a brake device that brakes a wheel using hydraulic fluid stored in a reservoir tank.
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- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
Description
更に、本発明のリザーバタンクは、前記抜き勾配が、樹脂充填時に前記樹脂の流れを阻害しない方向に形成されていることを特徴としている。
図1は本発明に係るリザーバタンクの実施の形態の第1例を備えるブレーキ装置を、模式的に示す図である。
図4(a)ないし(e)に示すように、フロート23は、フロート本体23aと、このフロート本体23aの上端に上方に向かって突設された側面視矩形かつ横断面矩形あるいは横断面円形の一対のマグネット支柱23b,23cと、これらのマグネット支柱23b,23cの上端に設けられた矩形容器状のマグネット支持部23dとを有している。
マグネット支持部23dにはマグネット22がフロート23と一体モールド成形により固定支持されている。
なお、この第2例では、第1例の位置決めリブ32,33および位置決め長溝34,35が設けられないが、第2例でもこれらの第1例の位置決めリブ32,33および位置決め長溝34,35を設けることもできる。また、作動液通路38,39は第2例にも同様にして設けることができる。
この第2例のリザーバタンク5の他の構成および他の作用効果は、前述の第1例と同じである。
図7(a)および(b)に示すように、この第3例のリザーバタンク3では、マグネット22の高さ位置に対する消灯液面の相対高さ位置が、第1例のマグネット22の高さ位置に対する消灯液面の相対高さ位置と異なっている。すなわち、第3例のマグネット22の高さ位置に対する消灯液面の相対高さ位置は、第1例のそれに比べて小さい。このとき、第3例の消灯液面の高さ位置に対するフロート本体23aの上面23a5の上方突出量は、第1例の同上方突出量と同じである。したがって、この第3例のリザーバタンク5では、各マグネット支柱23b,23cの高さは、第1例の各マグネット支柱23b,23cの高さより低くされている。このように、各マグネット支柱23b,23cが低くされることで、前述の第1例に比べて各マグネット支柱23b,23cの強度が大きくされている。すなわち、第3例の各マグネット支柱23b,23cは高強度構造とされている。
この第3例のリザーバタンク5の他の構成および他の作用効果は、前述の第2例と同じである。
なお、本発明は、前述の例に限定されることはなく、特許請求の範囲に記載された事項の範囲内で、種々の設計変更が可能である。
また、本発明に係るブレーキ装置は、リザーバタンクに貯留された作動液を用いて車輪にブレーキをかけるブレーキ装置に好適に利用することができる。
Claims (5)
- 貯留された作動液を検出する液量検出部を備え、
前記液量検出部が、貯留された作動液の液面が所定液面以下のときオンするとともに前記液面が所定液面より高いときオフするリードスイッチと、前記リードスイッチをオン・オフするマグネットが設けられるとともに前記作動液の液面に応じて上下動するフロートとを有し、前記リードスイッチが前記マグネットの上方に設けられるリザーバタンクにおいて、
前記フロートは、フロート本体と、前記フロート本体から上方に突設されるマグネット支柱と、前記マグネット支柱の上端に設けられて前記マグネットを支持するマグネット支持部と、前記マグネット支柱を補強する支柱補強部材とを有することを特徴とするリザーバタンク。 - 前記フロートは樹脂により一体成形されて形成され、
前記支柱補強部材は、金型の離型時に金型を抜くための抜き勾配を有することを特徴とする請求項1に記載のリザーバタンク。 - 前記抜き勾配は、樹脂充填時に前記樹脂の流れを阻害しない方向に形成されていることを特徴とする請求項2に記載のリザーバタンク。
- 貯留された作動液を検出する液量検出部を備え、
前記液量検出部が、貯留された作動液の液面が所定液面以下のときオンするとともに前記液面が所定液面より高いときオフするリードスイッチと、前記リードスイッチをオン・オフするマグネットが設けられるとともに前記作動液の液面に応じて上下動するフロートとを有し、前記リードスイッチが前記マグネットの上方に設けられるリザーバタンクにおいて、
前記フロートは、フロート本体と、前記フロート本体から上方に突設されるマグネット支柱と、前記マグネット支柱の上端に設けられて前記マグネットを支持するマグネット支持部とを有し、
前記マグネット支柱は、前記マグネットの長手方向から見て台形状に形成されていることを特徴とするリザーバタンク。 - 作動液を貯留するリザーバタンクと、前記リザーバタンク内の作動液が供給されるとともに作動時にブレーキ圧を発生するマスタシリンダと、前記マスタシリンダからの液圧で作動するブレーキシリンダとを少なくとも備え、
前記リザーバタンクが請求項1ないし4のいずれか1に記載のリザーバタンクであることを特徴とするブレーキ装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP11736761.5A EP2529988B1 (en) | 2010-01-26 | 2011-01-21 | Reservoir tank and brake device employing same |
US13/522,369 US20120292982A1 (en) | 2010-01-26 | 2011-01-21 | Reservoir tank and brake system using the reservoir tank |
JP2011551751A JP5497073B2 (ja) | 2010-01-26 | 2011-01-21 | リザーバタンクおよびこれを用いたブレーキ装置 |
CN201180007301.1A CN102712310B (zh) | 2010-01-26 | 2011-01-21 | 贮存箱及使用该贮存箱的制动装置 |
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JP2010-014178 | 2010-01-26 | ||
JP2010014178 | 2010-01-26 |
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WO2011093044A1 true WO2011093044A1 (ja) | 2011-08-04 |
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PCT/JP2011/000319 WO2011093044A1 (ja) | 2010-01-26 | 2011-01-21 | リザーバタンクおよびこれを用いたブレーキ装置 |
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US (1) | US20120292982A1 (ja) |
EP (1) | EP2529988B1 (ja) |
JP (1) | JP5497073B2 (ja) |
CN (1) | CN102712310B (ja) |
WO (1) | WO2011093044A1 (ja) |
Cited By (1)
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WO2023243695A1 (ja) * | 2022-06-16 | 2023-12-21 | 株式会社アドヴィックス | リザーバタンク及びブレーキ液圧発生装置 |
Families Citing this family (3)
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FR3001935B1 (fr) * | 2013-02-08 | 2015-03-20 | Illinois Tool Works | Reservoir de liquide pour vehicule et systeme automobile comprenant un tel reservoir |
US11951961B2 (en) * | 2019-08-19 | 2024-04-09 | ZF Active Safety US Inc. | Method for the functional testing of a fluid level warning indicator |
JP2021094976A (ja) * | 2019-12-17 | 2021-06-24 | ボッシュ株式会社 | リザーバタンク |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50110664U (ja) * | 1974-02-19 | 1975-09-09 | ||
JPS6130573U (ja) * | 1984-07-30 | 1986-02-24 | リズム自動車部品製造株式会社 | マスタシリンダ用レザ−バタンク |
JPS61146662A (ja) * | 1984-12-19 | 1986-07-04 | Nippon Air Brake Co Ltd | マスタシリンダ |
JPS62193526U (ja) * | 1986-05-29 | 1987-12-09 | ||
JPS63115016A (ja) * | 1986-10-31 | 1988-05-19 | Toyoda Gosei Co Ltd | 液面レベルセンサ |
JP2006519728A (ja) | 2003-03-08 | 2006-08-31 | コンチネンタル・テベス・アーゲー・ウント・コンパニー・オーハーゲー | 圧力流体供給用コンテナ |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3167623A (en) * | 1962-08-15 | 1965-01-26 | Kaleta Theodore | Liquid level switch with normally closed contacts and auxiliary means to maintain contacts in engaged position |
US3293579A (en) * | 1965-04-23 | 1966-12-20 | Acme Machine Works Inc | Liquid level indicator incorporating permanent magnets |
JPS5843541U (ja) * | 1981-09-18 | 1983-03-23 | トキコ株式会社 | オイルリザ−バ |
JPS58108953U (ja) * | 1982-01-21 | 1983-07-25 | 株式会社ナブコ | 作動液リザ−バ |
JPS6125263U (ja) * | 1984-07-05 | 1986-02-14 | 株式会社ナブコ | 液面検出器付リザ−バ |
JPS64674Y2 (ja) * | 1984-09-27 | 1989-01-09 | ||
JP2002002464A (ja) * | 2000-06-26 | 2002-01-09 | Sumitomo Denko Brake Systems Kk | 電動車両用制動装置 |
CN100533632C (zh) * | 2004-03-26 | 2009-08-26 | 大陆-特韦斯捷克有限责任公司 | 用于监测容器液位的装置 |
-
2011
- 2011-01-21 EP EP11736761.5A patent/EP2529988B1/en not_active Not-in-force
- 2011-01-21 WO PCT/JP2011/000319 patent/WO2011093044A1/ja active Application Filing
- 2011-01-21 JP JP2011551751A patent/JP5497073B2/ja not_active Expired - Fee Related
- 2011-01-21 US US13/522,369 patent/US20120292982A1/en not_active Abandoned
- 2011-01-21 CN CN201180007301.1A patent/CN102712310B/zh not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50110664U (ja) * | 1974-02-19 | 1975-09-09 | ||
JPS6130573U (ja) * | 1984-07-30 | 1986-02-24 | リズム自動車部品製造株式会社 | マスタシリンダ用レザ−バタンク |
JPS61146662A (ja) * | 1984-12-19 | 1986-07-04 | Nippon Air Brake Co Ltd | マスタシリンダ |
JPS62193526U (ja) * | 1986-05-29 | 1987-12-09 | ||
JPS63115016A (ja) * | 1986-10-31 | 1988-05-19 | Toyoda Gosei Co Ltd | 液面レベルセンサ |
JP2006519728A (ja) | 2003-03-08 | 2006-08-31 | コンチネンタル・テベス・アーゲー・ウント・コンパニー・オーハーゲー | 圧力流体供給用コンテナ |
Non-Patent Citations (1)
Title |
---|
See also references of EP2529988A4 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023243695A1 (ja) * | 2022-06-16 | 2023-12-21 | 株式会社アドヴィックス | リザーバタンク及びブレーキ液圧発生装置 |
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JP5497073B2 (ja) | 2014-05-21 |
EP2529988A1 (en) | 2012-12-05 |
US20120292982A1 (en) | 2012-11-22 |
JPWO2011093044A1 (ja) | 2013-05-30 |
EP2529988B1 (en) | 2017-03-15 |
CN102712310A (zh) | 2012-10-03 |
EP2529988A4 (en) | 2015-08-19 |
CN102712310B (zh) | 2015-01-07 |
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