CN203006827U - Electromagnetic braking device - Google Patents
Electromagnetic braking device Download PDFInfo
- Publication number
- CN203006827U CN203006827U CN 201220652640 CN201220652640U CN203006827U CN 203006827 U CN203006827 U CN 203006827U CN 201220652640 CN201220652640 CN 201220652640 CN 201220652640 U CN201220652640 U CN 201220652640U CN 203006827 U CN203006827 U CN 203006827U
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- armature
- brake disc
- braking device
- armature plate
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- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
The utility model relates to an electromagnetic braking device used for a traction machine of an elevator and the like. The provided electromagnetic braking device is characterized in that the manufacturing of electromagnetic coils is easy, and even though the condition of the electromagnetic coils at one side is bad, the braking action can be smoothly and reliably carried out by the electromagnetic coils at the other side. An armature (15), which is opposite to one surface of a braking disc (14) on a rotary shaft (12) arranged at a to-be-braked object, is attracted by the electromagnetic coils (19) when the elevator operates, and is tightly attached on the braking disc (14) by eliminating the electromagnetic force and utilizing the elastic force of springs (22) when the elevator is braked. The armature (15) is provided with a structure for intersecting central parts of two armature pieces (15A) and (15B), and is respectively provided with two groups of electromagnetic coils (19) and the two groups of springs (22) which drive the two armature pieces (15A) and (15B) respectively.
Description
Technical field
The utility model relates to for the electro-magnetic braking device on elevator traction machine etc.
Background technology
Traction elevator hangs over rope volume on the towing machine head pulley that hoistway top arranges, and car and counterweight are hung two ends at this rope, comes the lifting car by the head pulley that rotates towing machine with driving motor.On the towing machine of this elevator, for example, shown in Unexamined Patent 8-73143 communique, the disk type electromagnetic brake equipment is installed on its S. A..
The disk type electromagnetic brake equipment has the secured core that is wound with magnet coil, and between the movable core (armature) and fixed parts that drive by this secured core, configuration is installed on the brake disc on S. A. and consists of.That is, fixed parts and armature are opposed across brake disc.Its central part of brake disc is entrenched on S. A. by the hub with spline, by with spline engagement, rotate together with S. A., and can move on its direction of principal axis.
Electro-magnetic braking device with this structure when lift car is stopped, being removed electromagnetic force and by spring, armature is shifted onto a surface of brake disc, thereby this brake disc is clipped between armature and fixed parts.Therefore, brake disc stops and brake rotation shaft by friction.
In contrast, during cage operation, magnet coil is switched on, secured core is occured excitatory, draw armature thereby overcome spring force to the secured core side draught, and the releasing brake dish, so that the S. A. of towing machine is in the state that rotates freely.
This electro-magnetic braking device considers to carry out the dual design from safety perspective.For example, when car stops, as mentioned above, cut-out is to the energising of magnet coil and remove electromagnetic force, by braking on the surface that spring is shifted armature onto brake disc, yet, for some reason (glue with the relay burning such as energising control etc.), when causing cutting off the energising to magnet coil, electromagnetic force is not disengaged, thereby the situation of brake failure occurs.
So, magnet coil and armature are carried out dual, if in the time of can not cutting off energising to a magnet coil, make corresponding armature movement by the energising of cutting off another magnet coil, thereby brake.
When making this dual structure, consider from the miniaturization angle, adopt 1 dish, 2 armature forms.As shown in Figure 6, with respect to brake disc 61, configure side by side two and the opposed oval magnet coil 62 of this panel surface.Dispose respectively not shown armature and consist of the dual structure between the panel surface of these two magnet coils 62 and brake disc 61.And having or not of the electromagnetic force that produces according to magnet coil 62 makes corresponding armature contact/leave the panel surface of brake disc 61.
At this moment, configure side by side two magnet coils in the panel surface of brake disc 61, so magnet coil 62 as shown in the figure, forms ellipse.
Yet, when making magnet coil, to compare with making positive circular coil, the manufacturing process of oval magnet coil is difficult a lot, and time-consuming, and manufacturing cost is also high.And, owing to disposing side by side two magnet coils in panel surface, if when therefore only having the armature of a magnet coil side to be contacted with panel surface, put on the power generation deflection on panel surface, may affect carrying out smoothly of braking maneuver.
The utility model content
Problem to be solved in the utility model is, a kind of electro-magnetic braking device is provided, and its magnet coil is easily made, even and side magnet coil situation when bad, also can pass through the opposite side magnet coil, carry out smoothly and reliably braking maneuver.
The electro-magnetic braking device that embodiment of the present utility model relates to is characterized in that, possesses: brake disc, be arranged on the S. A. of braking object, and with this S. A. one rotation, and can move along its direction of principal axis; Armature is configured to opposed with a surface of this brake disc and can contacts, and can move along the direction of principal axis of described S. A.; Spring applies application force to this armature all the time, so that this armature is contacted with a surface of described brake disc, thereby another surface of this brake disc is closely attached on fixed parts; Magnet coil, opposed with described armature, and apply the electromagnetic force of the application force that overcomes described spring; Described armature constitutes, make the middle body of two armature plates intersected with each other, and be penetrated with described S. A. in this cross part, thereby can move along the direction of principal axis of this S. A., move by this, two armature plates respectively with a Surface Contact of described brake disc, described magnet coil and spring are respectively equipped with two groups, each group is indivedual drives described two armature plates.
In addition, be used for indivedual two groups of magnet coils that drive described two armature plates, electromagnetic force of each group magnet coil is being set as aggregate value less than the elastic force of two groups of springs.
In addition, described armature is set as the depth of engagement of the cross part of two armature plates, and another armature plate also can be contacted with the degree of depth on a surface of described brake disc when an armature plate is tied.
In addition, the radial direction fore-end with respect to the cross part center of described two armature plates is combined with the leading axle that is set in parallel in described S. A., and can be moved along its direction of principal axis respectively.
Described radial direction fore-end at described two armature plates is respectively equipped with through hole, and this through hole and described leading axle are chimeric can move on its direction of principal axis, and this through hole and described leading axle are combined into and can move along described direction of principal axis respectively.
In addition, form respectively guiding groove on the both sides of the described radial direction fore-end of described two armature plates, and as described leading axle, a pair of leading axle parallel with described S. A. is set respectively, and this a pair of leading axle is incorporated in the guiding groove of described both sides, in order to clamp the described radial direction fore-end of corresponding described armature plate, and described each armature plate can move along described leading axle.
In addition, on a surface of described brake disc, be formed with for contact with described armature, ring-type contact surface centered by described S. A., and described spring is configured to, push each armature plate with the opposed part of described contact surface.
Further, described spring is configured to, and pushes each armature plate and a plurality of positions opposed part of described contact surface.
According to above-mentioned embodiment, will not form ellipse by magnet coil, so it is easy to manufacture, and, even a side magnet coil situation also can be passed through the opposite side magnet coil when bad, carry out smoothly and reliably braking maneuver.
Description of drawings
Fig. 1 is the exploded perspective view that the electro-magnetic braking device that an embodiment of the present utility model relates to is shown.
Fig. 2 is the front view that the armature part of using in an embodiment of the present utility model is shown.
Fig. 3 is the lateral plan that the basic structure of the electro-magnetic braking device that a diagrammatic illustration embodiment of the present utility model relates to is shown.
Fig. 4 is the partial view that illustrates for the cross part that the armature plate that an embodiment of the present utility model uses is described.
Fig. 5 is the schematic diagram that other structure example of the armature plate that uses in an embodiment of the present utility model is shown.
Fig. 6 is the schematic diagram that illustrates be used to existing dual brake equipment is described.
The specific embodiment
Below, describe embodiment of the present utility model in detail with reference to accompanying drawing.At first, based on Fig. 3, the basic structure of the electro-magnetic braking device that this embodiment relates to is described.
Fig. 3 is the schematic configuration that is illustrated in the electro-magnetic braking device 13 that the S. A. 12 outer end sides by electric motor driven towing machine 11 arrange.On this S. A. 12, brake disc 14 is installed.Its centre of gration of brake disc 14, by spline joint on the periphery of S. A. 12, and by with this spline engagement, rotation together with S. A. 12, and the stateful connection that can move on its direction of principal axis.
With a surface (the illustrating right surface) opposed locations of this brake disc 14 on be provided with tabular armature 15.The length direction pars intermedia of this armature 15 is being connected on the periphery of S. A. 12 along the mode that its direction of principal axis moves.And the length direction end of this armature 15, by the leading axle 16 that be arranged in parallel with S. A. 12, can be directed along the mode that its direction of principal axis moves supporting.In addition, can come a Surface Contact with brake disc 14 by this axial movement of edge.In addition, another surface of this brake disc 14 (diagram left surface), opposed with the fixed parts 17 that is located on towing machine 11 end faces.Further, on two surfaces, left and right of brake disc 14, be formed with and armature 15 and the opposed contact surface 14a of fixed parts 17 with ring-type.
As shown in Figure 1, comprise the secured core 20 of magnet coil 19, in fact be contained in shell 23.As shown in Figure 3, an end of leading axle 16 (diagram left end) is fixed in towing machine 11 sides, but the other end (diagram right-hand member), as shown in Figure 1, by these shell 23 supportings.
Also have, in Fig. 3, for the ease of understanding, draftings exaggerated at the opposed interval on fixed parts 17 and brake disc 14 another surfaces and brake disc 14 1 surfaces and the opposed interval of armature 15, yet in fact these intervals are the slight gap about 0.5mm.
At this, as depicted in figs. 1 and 2, the armature 15 in this embodiment be mutually intersect two armature plate 15A, 15B the length direction middle body and consist of.On this cross part, be formed with the opening 25A, the 25B that run through for S. A. 12, and being installed on S. A. 12 along the state that its direction of principal axis moves.In addition, be respectively equipped with through hole 26A, 26B on the length direction both ends of each armature plate 15A, 15B, leading axle 16 is can be embedded in along the state that its direction of principal axis moves this through hole 26A, 26B.Further, the cross part at two armature plate 15A, 15B is formed with recess 27A, the 27B that is engaged with each other.
For these two armature plate 15A, 15B, be provided with two groups of magnet coils 19 and spring 22, and, indivedual armature plate 15A, the 15B of driving of each group.That is, as shown in Figure 1, for armature plate 15A, be provided with magnet coil 19A1,19A2 and spring 22A1,22A2, and for armature plate 15B, be provided with magnet coil 19B1,19B2 and spring 22B1,22B2.Based on this structure, can make two armature plate 15A, 15B contact individually respectively or leave a surface of brake disc 14.
In described structure, during elevator cage operation, magnet coil 19A1,19A2 and 19B1,19B2 are switched on and excitatory secured core 20, thereby overcome the elastic force of respective springs 22A1,22A2 and 22B1,22B2, two armature plate 15A, 15B are attracted secured core 20 sides.Therefore two armature plate 15A, 15B separate from brake disc 14, discharge this brake disc 14, thereby the S. A. 12 of towing machine 11 are in the state that can rotate freely.
When car is stopped, the energising of cut-out to magnet coil 19A1,19A2 and 19B1,19B2, to remove electromagnetic force, and the elastic force by spring 22A1,22A2 and 22B1,22B2, make two armature plate 15A, 15B to the diagram left to movement, shift onto on a surface of brake disc 14, and this brake disc 14 is clipped between two armature plate 15A, 15B and fixed parts 17.Therefore, brake disc 14 stops and brake rotation shaft 12 by friction.
At this moment, the length direction both ends of armature plate 15A, 15B, being incorporated on leading axle 16 by through hole 26A, 26B mobile mode on the direction of principal axis of leading axle 16, therefore, armature plate 15A, 15B can be smoothly to the diagram lefts to movement.And, when armature plate 15A, 15B contact with brake disc 14, be subject to the torque from the hand of rotation of brake disc 14, but owing to being incorporated on leading axle 16, therefore rotation is prevented from, and keeps brake disc 14 thereby can brake reliably.
When this drg action, as mentioned above, suppose for some reason (control such as energising and use relay welding etc.), be in the magnet coil 19B1 that can not cut off corresponding to armature plate 15B, the "on" position of 19B2.At this moment, the electromagnetic force of armature plate 15B is not disengaged, thereby armature plate 15B can not be shifted onto on a surface of brake disc 14.Even this situation if cut off corresponding to the magnet coil 19A1 of another armature plate 15A of dual, the energising of 19A2, can be removed the electromagnetic force to this armature plate 15A.Therefore, armature plate 15A passes through the elastic force of corresponding spring 22A1,22A2 to the diagram left to movement, and shift onto on a surface of brake disc 14, and together compress this brake disc 14 with fixed parts 17, therefore brake disc 14 is braked by friction force, and the rotation of S. A. 12 is remained in halted state.
At this moment, be pulled to the armature plate 15A of brake disc 14 sides, because S. A. 12 runs through its length direction middle body, when therefore being contacted with brake disc 14, shift symmetrically brake disc 14 onto by its centre of gration.The situation of existing dual shown in Figure 6, when only having not shown armature corresponding to a magnet coil 62 to be pulled to brake disc 61, the part that belongs to the biasing scope with respect to this centre of gration is subject to contact.And for this, in this embodiment, contact with equalization pressure for brake disc 14, thereby can carry out reliably braking maneuver.
In addition, if in the time of can not cutting off energising corresponding to magnet coil 19A1, the 19A2 of armature plate 15A, the electromagnetic force of armature plate 15A is not disengaged, thereby armature plate 15A can not be shifted onto on a surface of brake disc 14.At this moment, if cut off corresponding to the magnet coil 19B1 of another armature plate 15B of dual, the energising of 19B2, the electromagnetic force of this armature plate 15B is disengaged, and therefore, the elastic force by institute corresponding spring 22B1,22B2 is to illustrating left to movement.
Yet at the diagram left, armature plate 15A is subject to the electromagnetic force of institute corresponding magnet coil 19A1,19A2 and mobile suffering restraints, so armature plate 15B can collide with affined armature plate 15A.Due to this armature plate 15B collision, armature plate 15A is subject to elastic force from spring 22A1 corresponding with it, 22A2 and adds from corresponding to the spring 22B1 of armature plate 15B, the elastic force of 22B2.Therefore, as long as will be set as corresponding to the electromagnetic force of magnet coil 19A1, the 19A2 of armature plate 15A the aggregate value less than spring 22A1,22A2,22B1,22B2 elastic force, armature plate 15A, the 15B constrained force one that can overcome from magnet coil 19A1,19A2 illustrates left in the same way on a surface of moving and be pushed to brake disc 14, thereby brakes this brake disc 14 and S. A. 12.
Like this, magnet coil and armature are carried out dual, even suppose to cut off the energising to a magnet coil, also can be by cutting off the energising to another magnet coil, and according to spring force, corresponding armature is moved, thereby can brake.In addition, because two armature plates intersect at its length direction middle body, even so when an armature plate is contacted with brake disc, also can apply symmetrically contact by the centre of gration of brake disc, therefore can carry out reliably braking maneuver by the contact of equalization.Further, by above-mentioned cross-over configuration, will not form ellipse by magnet coil, and can use positive circular electric magnetic coil, thereby reduce manufacturing cost when can easily make magnet coil.
In the above-described embodiment, in order to prevent owing to failing to cut off to the energising of magnet coil and affined armature plate 15A causes another armature plate 15B to be failure to actuate, the electromagnetic force of magnet coil 19A1,19A2 is set as aggregate value less than spring 22A1,22A2,22B1,22B2 elastic force.Yet, the utility model is not limited to this structure, recess 27A, the 27B degree of depth by will be positioned at each armature plate 15A, 15B cross part, be the depth of engagement of cross part, be set as shown in Figure 4, even also can make another armature plate 15B be contacted with a surface of brake disc 14 when an armature plate 15A is restrained.
(a) of Fig. 4 shows two armature plate 15A, 15B by the state of magnet coil 19A1, the 19A2 of correspondence and 19B1,19B2 attraction.And the diagram left surface that (b) of Fig. 4 shows armature plate 15B is contacted with the state on a surface of brake disc 14.
The recess 27A, the 27B degree of depth α that form at the cross part of two armature plate 15A, 15B are set as, and in state shown in (a) of Fig. 4, have interval β between bottom surface opposite each other.Interval β is set as, and as shown in Fig. 4 (b), the diagram left surface of armature plate 15B is contacted with under the state on a surface of brake disc 14, has slight gap β 1.
By such setting, even can not cut off the magnet coil 19A1 corresponding to armature plate 15A, the energising of 19A2, and the electromagnetic force of armature plate 15A is not disengaged, cause armature plate 15A due to magnet coil 19A1, when 19A2 is restrained to absorption position, also can make another armature plate 15B of dual be contacted with a surface of brake disc 14.
That is, another armature plate 15B of dual, by cutting off the energising of corresponding magnet coil 19B1,19B2, by the elastic force of spring 22B1,22B2 to the diagram left to movement.At this moment, there is restrained armature plate 15A on the left of diagram, and be positioned at recess 27A, the 27B of the cross part of two armature plate 15A, 15B, as shown in Fig. 4 (a), the degree of depth is set to respectively α, and have interval β between these bottom surfaces opposite each other, so armature plate 15B can be to the mobile distance that is equivalent to be limited the opposed interval β between mobile armature plate 15A in diagram left side.
As mentioned above, in fact the opposed slight gap that is spaced apart the 0.5mm left and right on one of brake disc 14 surface and the opposed interval of armature 15 and fixed parts 17 and another surface of brake disc 14, therefore, as long as interval β is set as several mm left and right, armature plate 15B in the situation that with affined armature plate 15A collision, be contacted with a surface of brake disc 14 as shown in Fig. 4 (b).And, this brake disc 14 is close to the fixed parts 17 that is positioned at opposition side and is compressed, thereby keep braking by friction force.Under this contact condition, as shown in Fig. 4 (b), have slight gap β 1 if be set as, because the elastic force of spring 22B1,22B2 is continuously applied a surface in brake disc 14, thereby can keep failure-free braking maneuver state.
By such formation, even if can not cut off energising to a magnet coil, also can be by cutting off the energising to another magnet coil, and according to spring force, corresponding armature plate is moved reliably, thereby brake.
In addition, in the above-described embodiment, be provided with through hole 26A, 26B on the length direction both ends of each armature plate 15A, 15B, and can be incorporated into movably on leading axle 16 at direction of principal axis, but be not limited to this structure.For example, as shown in Figure 5, also can form circular-arc guiding groove 51 on the both sides with respect to the radial direction fore-end at the cross part center of two armature plate 15A, 15B, and can make mode that leading axle 52 moves along its direction of principal axis respectively in conjunction with a pair of leading axle 52 that be arranged in parallel with S. A. 12.
Even consist of like this, also can guide armature plate 15A, 15B axially to move smoothly, prevent from simultaneously being rotated action.In addition, can prevent reliably that armature plate 15A, 15B are to plate face direction twisting action.
In addition, on the panel surface of brake disc 14, as mentioned above, be formed with the contact surface 14a of the ring-type centered by S. A. 12, in order to contact with armature plate 15A, 15B.Be used for making spring 22A1,22A2,22B1,22B2 that armature plate 15A, 15B carry out braking maneuver and corresponding magnet coil 19A1,19A2,19B1,19B2 together, (figure 5 illustrates spring 22B1, the 22B2 and magnet coil 19B1, the 19B2 that tackle with armature plate 15B) as shown in Figure 5, be arranged in the opposed scope of contact surface 14a with above-mentioned brake disc 14.At this moment, as shown in the figure, also a plurality of spring 22A1,22A2 can be set in this scope.
Several embodiment of the present utility model has been described, these embodiments are to propose as example, do not mean at the protection domain that limits utility model.These new embodiments can be implemented with other various ways, in the scope that does not depart from the utility model aim, can carry out various omissions, replacement, change.These embodiments or its distortion are contained in the protection domain or aim of utility model, also are contained in the utility model and its impartial protection domain of putting down in writing in claims.
Claims (8)
1. electro-magnetic braking device is characterized in that possessing:
Brake disc is arranged on the S. A. of braking object, with this S. A. one rotation, and can move along its direction of principal axis;
Armature is configured to opposed with a surface of this brake disc and can contacts, and can move along the direction of principal axis of described S. A.;
Spring applies application force to this armature all the time, so that this armature is contacted with a surface of described brake disc, thereby another surface of this brake disc is closely attached on fixed parts;
Magnet coil, opposed with described armature, and apply the electromagnetic force of the application force that overcomes described spring;
Described armature constitutes, make the middle body of two armature plates intersected with each other, and be penetrated with described S. A. in this cross part, thereby can move along the direction of principal axis of this S. A., move by this, two armature plates respectively with a Surface Contact of described brake disc, described magnet coil and spring are respectively equipped with two groups, each group is indivedual drives described two armature plates.
2. electro-magnetic braking device as claimed in claim 1, is characterized in that,
Be used for indivedual two groups of magnet coils that drive described two armature plates, electromagnetic force of each group magnet coil is being set as aggregate value less than the elastic force of two groups of springs.
3. electro-magnetic braking device as claimed in claim 1, is characterized in that,
Described armature is set as the depth of engagement of the cross part of two armature plates, and another armature plate also can be contacted with the degree of depth on a surface of described brake disc when an armature plate is tied.
4. electro-magnetic braking device as claimed in claim 1, is characterized in that,
The radial direction fore-end with respect to the cross part center of described two armature plates is combined with the leading axle that is set in parallel in described S. A., and can be moved along its direction of principal axis respectively.
5. electro-magnetic braking device as claimed in claim 4, is characterized in that,
Described radial direction fore-end at described two armature plates is respectively equipped with through hole, and this through hole and described leading axle are chimeric can move on its direction of principal axis, and this through hole and described leading axle are combined into and can move along described direction of principal axis respectively.
6. electro-magnetic braking device as claimed in claim 4, is characterized in that,
Form respectively guiding groove on the both sides of the described radial direction fore-end of described two armature plates, and as described leading axle, a pair of leading axle parallel with described S. A. is set respectively, and this a pair of leading axle is incorporated in the guiding groove of described both sides, in order to clamp the described radial direction fore-end of corresponding described armature plate, and described each armature plate can move along described leading axle.
7. electro-magnetic braking device as claimed in claim 1, is characterized in that,
On a surface of described brake disc, be formed with for contact with described armature, ring-type contact surface centered by described S. A., and described spring is configured to, push each armature plate with the opposed part of described contact surface.
8. electro-magnetic braking device as claimed in claim 7, is characterized in that,
Described spring is configured to, and pushes each armature plate and a plurality of positions opposed part of described contact surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012153514A JP5505996B2 (en) | 2012-07-09 | 2012-07-09 | Electromagnetic brake device |
| JP2012-153514 | 2012-07-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203006827U true CN203006827U (en) | 2013-06-19 |
Family
ID=48598442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220652640 Expired - Lifetime CN203006827U (en) | 2012-07-09 | 2012-11-30 | Electromagnetic braking device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5505996B2 (en) |
| CN (1) | CN203006827U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107096187A (en) * | 2017-04-11 | 2017-08-29 | 广州佶兔工业设计有限公司 | One kind rock-climbing equipment |
| CN112815025A (en) * | 2019-11-15 | 2021-05-18 | 株式会社丰田自动织机 | Brake system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000211858A (en) * | 1999-01-25 | 2000-08-02 | Hitachi Ltd | Electromagnetic brake for elevator hoist |
| JP3700570B2 (en) * | 2000-10-10 | 2005-09-28 | 株式会社日立製作所 | Electromagnetic disc brake and elevator hoisting machine |
| JP4273677B2 (en) * | 2001-04-20 | 2009-06-03 | 株式会社日立製作所 | Elevator equipment |
| DE102006016434A1 (en) * | 2006-04-07 | 2007-10-11 | Chr. Mayr Gmbh & Co. Kg | Square brake |
-
2012
- 2012-07-09 JP JP2012153514A patent/JP5505996B2/en active Active
- 2012-11-30 CN CN 201220652640 patent/CN203006827U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107096187A (en) * | 2017-04-11 | 2017-08-29 | 广州佶兔工业设计有限公司 | One kind rock-climbing equipment |
| CN112815025A (en) * | 2019-11-15 | 2021-05-18 | 株式会社丰田自动织机 | Brake system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5505996B2 (en) | 2014-05-28 |
| JP2014015973A (en) | 2014-01-30 |
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Granted publication date: 20130619 |
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