JP5765944B2 - Brake lining and manufacturing method of brake lining - Google Patents

Description

  The present invention relates to a brake lining that applies a braking force to a rotating body by contact with the rotating body, and a method for manufacturing the brake lining.

  Conventionally, in order to suppress the generation of noise during braking (for example, squealing noise, impact noise, etc.), a technique for increasing the porosity of the brake friction material by mixing diatomaceous earth into the brake friction material has been proposed ( For example, see Patent Document 1).

  Also, conventionally, in order to suppress the generation of noise during braking, there has been a friction material in which the material at both ends is softer than the material at the center and the both ends are more easily worn than the center by sliding against the disk. Proposed. In this conventional friction material, both ends are worn according to the shape of the disk, so that the unevenness of the surface pressure distribution is reduced, and the generation of noise during braking is suppressed (for example, see Patent Document 2).

JP 2003-194121 A JP 2003-21181 A

  However, in the brake friction material shown in Patent Document 1, since diatomaceous earth is mixed, the strength of the brake friction material is reduced. In addition, in order to adjust the porosity of the brake friction material, it is necessary to mix materials and fibers that are not necessary for ensuring good friction characteristics, so the manufacturing cost of the brake friction material increases.

  Moreover, in the friction material shown by patent document 2, since it is necessary to use the material which is easy to wear for the both ends of a friction material, material cost will increase. Furthermore, since the friction material is less likely to wear at the center, both ends of the friction material are more likely to wear, the hardness will change abruptly at the boundary between the center and both ends of the friction material. There is also a possibility that a stick-slip phenomenon may occur at the boundary between the center portion and both end portions.

  The present invention has been made to solve the above-described problems, and can suppress the generation of noise, reduce the manufacturing cost, and more reliably generate the braking force. It is an object of the present invention to obtain a brake lining that can be used and a method for manufacturing the brake lining.

  The brake lining according to the present invention includes a contact portion that contacts and separates from the rotating body due to displacement of the shoe with respect to the rotating body, a mounting portion that is disposed closer to the shoe than the contact portion, and is attached to the shoe, and between the contact portion and the mounting portion The contact part is provided with a connecting part that keeps the contact part and the attachment part away from each other, and the contact part is elastically deformable by receiving a force in a direction approaching the shoe by contact with the rotating body. A predetermined gap that allows elastic deformation of the contact portion in a direction approaching the shoe is provided between the contact portion and the attachment portion, avoiding the connecting portion.

  The brake lining according to the present invention includes a contact portion that contacts and separates from the rotating body due to displacement of the shoe with respect to the rotating body, and a protruding portion that protrudes from the contact portion toward the shoe and is attached to the shoe. Due to contact with the body, it can be elastically deformed by receiving a force in a direction approaching the shoe, and between the contact portion and the shoe, the elastic deformation of the contact portion in the direction approaching the shoe is permitted. A gap is provided to avoid the protruding portion.

  The brake lining manufacturing method according to the present invention includes a contact portion that contacts and separates from the rotating body, an attachment portion that is attached to the shoe, and connects between the contact portion and the attachment portion, and the contact portion and the attachment portion are separated from each other. A brake lining manufacturing method for manufacturing a brake lining in which a predetermined gap is provided between the contact portion and the mounting portion so as to avoid the connection portion. After the first press step for forming the mounting portion and pressurizing by putting it in the mold, the removal plate with the release agent attached to each of the front surface and the back surface is exposed to a part of the upper surface of the mounting portion. After placing the plate on the top surface of the mounting portion in the state of being attached, and after the plate placement step, the lining material is placed in a mold and pressurized so as to cover the exposed portion of the top surface of the mounting portion and the removal plate. Connecting part integrated with And the second pressing step for forming the contact portion, after the second pressing step, the releasing step for removing the contact portion, the connecting portion and the attaching portion together with the removing plate from the mold, and after the releasing step, between the contact portion and the attaching portion. The removal process which forms a predetermined clearance gap between a contact part and an attachment part by removing a removal board from is provided.

The brake lining manufacturing method according to the present invention includes a contact portion that contacts and separates from the rotating body, an attachment portion that is attached to the shoe, and connects between the contact portion and the attachment portion, and the contact portion and the attachment portion are separated from each other. Brake lining having a connecting portion that keeps the contacted state, and a holding plate that is disposed between the contact portion and the mounting portion so as to avoid the connecting portion, and a predetermined gap is provided between the contacting portion and the holding plate A brake lining manufacturing method for manufacturing a first lining step in which a lining material is put in a mold and pressed to form a mounting portion, and a release layer having a predetermined thickness after the first pressing step Of the front surface and the back surface, the plate that is formed only on the front surface is disposed on the upper surface of the mounting portion in a state where a part of the upper surface of the mounting portion is exposed. Linin covering the exposed part and the holding plate The second pressing step for forming the connecting portion and the contact portion integrated with the mounting portion and the holding plate by placing the material in a mold and pressurizing the contact portion, the connecting portion and the mounting portion after the second pressing step. A predetermined gap is formed between the contact portion and the holding plate by removing the release layer from the contact portion and the holding plate by firing after the mold release step of removing the mold from the mold together with the holding plate. The manufacturing method of the brake lining characterized by including the removal process to perform.

  In the brake lining according to the present invention, the predetermined gap that allows the elastic deformation of the contact portion in the direction approaching the shoe is provided between the contact portion and the mounting portion so as to avoid the connecting portion, so that it contacts the rotating body. It is possible to easily elastically deform the contact portion to be moved toward the shoe. Thereby, the impact which arises by the contact with the rotary body of a brake lining can be absorbed, and generation | occurrence | production of noise can be suppressed. Therefore, it is not necessary to use diatomaceous earth or a material that easily wears for the brake lining for sacrificing the friction characteristics, so that the friction characteristics can be ensured and the manufacturing cost can be reduced. Further, since it is not necessary to produce a brake lining by combining materials having different properties to reduce noise, it is possible to reduce the variation of the friction coefficient between the brake lining and the rotating body. Furthermore, since the contact portion can be easily elastically deformed according to the shape of the rotating body, a contact area with the rotating body can be ensured. Therefore, the braking force can be generated more reliably.

  In the brake lining according to the present invention, the protruding portion protrudes from the contact portion toward the shoe, and a predetermined gap that allows elastic deformation of the contact portion in a direction approaching the shoe is a protruding portion between the contact portion and the shoe. Therefore, the contact portion that contacts the rotating body can be easily elastically deformed in a direction approaching the shoe. Thereby, similarly to the above, not only the generation of noise can be suppressed, but also the manufacturing cost can be reduced. In addition, the braking force can be generated more reliably.

  Further, in the brake lining manufacturing method according to the present invention, the lining material is put into a mold and pressed, and a removal plate with a release agent attached to each of the front and back surfaces is placed in the mold, and then the lining material is used. The contact part, the attachment part, and the connecting part are integrally formed by putting in a mold and pressurizing again, and a predetermined gap is provided between the contact part and the attachment part by removing the removal plate from between the contact part and the attachment part. Therefore, a predetermined gap can be formed between the contact portion and the attachment portion without performing a work such as cutting. Therefore, the brake lining can be manufactured using the normal equipment used for forming the brake lining, and the investment in the brake lining manufacturing equipment can be suppressed.

  In the brake lining manufacturing method according to the present invention, the contact portion, the mounting portion, and the connecting portion are formed with the holding plate on which the release layer having a predetermined thickness is formed, and the holding plate is left. Since the predetermined gap is formed by removing only the release layer as it is, it is not necessary to reduce the thickness of the holding plate, and the strength of the holding plate should be strong enough to withstand the pressure during the second pressing step. Can do. As a result, the predetermined gap having a very small width dimension can be formed more uniformly. Therefore, a brake lining that can be applied to a brake device having a large braking force against the rotating body can be easily and inexpensively manufactured with ordinary equipment.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing a configuration in which a brake device according to Embodiment 1 of the present invention is applied to an elevator hoist. It is typical sectional drawing along the II-II line of FIG. It is an enlarged view which shows the brake lining of FIG. It is a top view which shows the brake lining of FIG. It is typical sectional drawing which shows the state which the brake lining of FIG. 3 inclines and contacts with the internal peripheral surface of a drum part. It is an enlarged view which shows the brake lining of FIG. It is typical sectional drawing which shows the state of the 1st press process which pressurizes the material for lining in order to manufacture the brake lining of FIG. It is typical sectional drawing which shows the state of the board arrangement | positioning process which arrange | positions a removal board on the upper surface of the attaching part shape | molded by the 1st press process of FIG. It is typical sectional drawing which shows the state of the 2nd press process which puts the material for lining in a type | mold and pressurizes it after the board | substrate arrangement | positioning process of FIG. It is typical sectional drawing which shows the state by which the contact part and the connection part were integrally molded with the attachment part by the 2nd press process of FIG. It is a top view which shows each removal board of FIG. It is sectional drawing which shows the brake lining by Embodiment 2 of this invention. It is sectional drawing which shows the brake lining by Embodiment 3 of this invention. It is typical sectional drawing which shows a state when manufacturing the brake lining of FIG. It is sectional drawing which shows the brake lining by Embodiment 4 of this invention. It is sectional drawing along the XVI-XVI line of FIG. It is typical sectional drawing which shows the state of the board arrangement | positioning process which arrange | positions a holding plate on the upper surface of the attaching part shape | molded by the 1st press process in order to manufacture the brake lining of FIG. It is typical sectional drawing which shows the state by which the contact part and the connection part were integrally shape | molded by the 2nd press process after the board arrangement | positioning process of FIG.

Embodiment 1 FIG.
FIG. 1 is a front view showing a configuration in which a brake device according to Embodiment 1 of the present invention is applied to an elevator hoisting machine. FIG. 2 is a schematic cross-sectional view taken along the line II-II in FIG. In the figure, an elevator hoist 1 includes a main shaft 2 that is a fixed shaft, a rotor (rotary body) 3 that rotates about the main shaft 2, and a motor that generates a driving force for rotating the rotor 3 (not shown). ).

  As shown in FIG. 2, the rotor 3 is rotatably attached to the main shaft 2 via a plurality of bearings 4. The rotor 3 includes a tubular sheave portion 5 that is disposed coaxially with the main shaft 2 and a tubular drum portion 6 that is disposed coaxially with the main shaft 2 and has an inner diameter larger than the outer diameter of the sheave portion 5. And an intermediate portion 7 that connects the sheave portion 5 and the drum portion 6. The sheave part 5, the drum part 6, and the intermediate part 7 are integrally rotated around the main shaft 2.

  A plurality of sheave grooves 8 are provided on the outer periphery of the sheave part 5. A plurality of suspension bodies (not shown) (for example, ropes, belts, etc.) that suspend a car and a counterweight are wound around the sheave part 5 while being inserted into each sheave groove 8. Thereby, the car and the counterweight are raised and lowered in the hoistway according to the rotation of the rotor 3.

  A brake device 9 is provided inside the drum portion 6 in the radial direction. The brake device 9 includes a pair of movable bodies 10 that are displaceable in a direction to be in contact with and away from the inner peripheral surface of the drum portion 6, and a pair of actuators 11 that are supported by the main shaft 2 and that displace the movable bodies 10. Yes.

  Each actuator 11 is contracted between a fixed iron core 12 fixed to the main shaft 2, and the fixed iron core 12 and the movable body 10, and biases the movable body 10 in a direction in contact with the inner peripheral surface of the drum portion 6. A plurality of biasing springs (biasing bodies) 13 and electromagnetics that are provided on the fixed iron core 12 and attract the movable body 10 in a direction away from the inner peripheral surface of the drum portion 6 against the biasing force of each biasing spring 13. And a brake coil (opening device) 14 that generates a suction force.

  Each movable body 10 includes a movable iron core 15 that faces the fixed iron core 12, a shoe 16 that faces the inner peripheral surface of the drum portion 6, and the movable iron core 15 and the shoe 16 that are separated from the movable iron core 15. A plurality of support bolts 17 to be connected and a plurality of brake linings 18 provided on the shoe 16 and contacting and leaving the inner peripheral surface of the drum portion 6 by the displacement of the movable body 10 are provided.

  One end of each support bolt 17 is screwed to the movable iron core 15. The distance between the movable iron core 15 and the shoe 16 is adjusted by adjusting the screwing amount of each support bolt 17 to the movable iron core 15. A curved surface portion 17 a is provided at the other end portion of each support bolt 17. Each support bolt 17 is attached to the shoe 16 with the curved surface portion 17 a in contact with the shoe 16. As a result, the shoe 16 can swing with respect to each support bolt 17.

  The biasing spring 13 is contracted between the fixed iron core 12 and the movable iron core 15. When energization of the brake coil 14 is stopped, the brake lining 18 is pressed against (in contact with) the inner peripheral surface of the drum portion 6 by the biasing force of the biasing spring 13. A braking force is applied to the rotor 3 by bringing the brake lining 18 into contact with the inner peripheral surface of the drum portion 6.

  The movable iron core 15 is adapted to receive an electromagnetic attractive force by energizing the brake coil 14. The movable body 10 is displaced in a direction away from the inner peripheral surface of the drum portion 6 against the urging force of each urging spring 13 when the movable iron core 15 receives an electromagnetic attractive force. The braking force applied to the rotor 3 disappears when the brake lining 18 moves away from the drum portion 6.

  FIG. 3 is an enlarged view showing the brake lining 18 of FIG. FIG. 4 is a top view showing the brake lining 18 of FIG. In the figure, the brake lining 18 is composed of a fiber (base material) 19 and a blended material 20. Formulation material 20 includes a friction modifier, a filler, and a binder.

  As the fiber 19, for example, glass fiber, steel fiber, aramid fiber, carbon fiber, or potassium titanate fiber is used. As the friction modifier, for example, cashew dust, rubber dust, copper, zinc, alumina or zirconia is used. As the filler, for example, calcium carbonate, barium sulfate, calcium sulfate or tin sulfide is used. As the binder, for example, phenol resin, melanin resin or polyimide is used.

  The brake lining 18 has a contact portion 21 that contacts and separates from the inner peripheral surface of the drum portion 6 due to the displacement of the shoe 16, a mounting portion 22 that is disposed closer to the shoe 16 than the contact portion 21 and is attached to the shoe 16, The contact part 21 and the attachment part 22 are connected, and the contact part 21 and the attachment part 22 have the connection part 23 which maintains the state which mutually separated.

  The contact portion 21 is elastically deformable by receiving a force in a direction approaching the shoe 16 by contact with the inner peripheral surface of the drum portion 6. The connecting portion 23 connects only a part of each of the contact portion 21 and the attachment portion 22. Thus, a predetermined gap (space) 24 that allows elastic deformation of the contact portion 21 in the direction approaching the shoe 16 (that is, the direction approaching the attachment portion 22) is provided between the contact portion 21 and the attachment portion 22. The connection part 23 is avoided and provided. The contact portion 21 is more easily elastically deformed in a direction approaching the attachment portion 22 at a portion where the predetermined gap 24 is adjacent than a portion where the connecting portion 23 is connected. The predetermined gap 24 is opened at the outer peripheral surface of the brake lining 18. That is, the predetermined gap 24 is opened to the outside from between the contact portion 21 and the attachment portion 22.

  In this example, the connecting portion 23 connects only the central portions of the contact portion 21 and the attachment portion 22. Accordingly, in this example, a predetermined gap 24 is formed between the contact portion 21 and the mounting portion 22 so as to surround the connecting portion 23. Thereby, the outer peripheral part of the contact part 21 becomes easier to elastically deform than the center part of the contact part 21. In addition, in this example, each shape of the contact part 21, the attachment part 22, and the connection part 23 when it sees along the thickness direction of the brake lining 18 is a rectangular shape as shown in FIG. Further, in this example, when viewed along the thickness direction of the brake lining 18, the size of the outer shape of the connecting portion 23 is smaller than the size of the outer shape of the contact portion 21. The sizes of the respective outer shapes of 22 are the same.

  FIG. 5 is a schematic cross-sectional view showing a state where the brake lining 18 of FIG. 3 is in contact with the inner peripheral surface of the drum portion 6 while being inclined. FIG. 6 is an enlarged view showing the brake lining 18 of FIG. As shown in the drawing, since the shoe 16 is swingable with respect to each support bolt 17, the brake lining 18 tilts and contacts the inner peripheral surface of the drum portion 6 (that is, the brake lining 18 is in contact with the drum portion). 6). When the brake lining 18 comes into contact with the inner peripheral surface of the drum portion 6, the outer peripheral portion of the contact portion 21 is pushed by the inner peripheral surface of the drum portion 6 and elastically deformed in a direction approaching the shoe 16. The impact that the brake lining 18 receives from the inner peripheral surface of the drum portion 6 is absorbed by the brake lining 18 due to the elastic deformation of the contact portion 21.

  Next, the operation will be described. When raising and lowering the car and the counterweight, a driving force is generated in the motor of the hoist 1 and an electromagnetic attractive force is generated by energizing the brake coil 14 to move the movable body 10 from the inner peripheral surface of the drum portion 6. Keep away. Thereby, the application of the braking force to the rotor 3 is released, and the rotor 3 is rotated by the driving force of the motor.

  When the car and the counterweight are normally stopped, energization to the brake coil 14 is stopped under the control of a control device (not shown). Thereby, the generation of the electromagnetic attractive force is stopped, and the movable body 10 is displaced toward the inner peripheral surface of the drum portion 6 by the urging force of the urging spring 13. Thereafter, the brake lining 18 is pressed against the inner peripheral surface of the drum portion 6 to apply a braking force to the rotor 3. Thereby, rotation of the rotor 3 is prevented and the stop position of the car is maintained.

  When the brake lining 18 comes into contact with the inner peripheral surface of the drum portion 6, only the outer peripheral portion of the contact portion 21 contacts the inner peripheral surface of the drum portion 6. Since a predetermined gap 24 is formed on the mounting portion 22 side of the outer peripheral portion of the contact portion 21, the outer peripheral portion of the contact portion 21 contacts the inner peripheral surface of the drum portion 6, thereby It is pushed by the peripheral surface and elastically deformed in a direction approaching the attachment portion 22. Thereby, the impact force is absorbed by the brake lining 18 and a contact area of the brake lining 18 with the inner peripheral surface of the drum portion 6 is also ensured.

  Next, a method for manufacturing the brake lining 18 will be described. 7-10 is a block diagram which shows the procedure at the time of manufacturing the brake lining 18 of FIG. When manufacturing the brake lining 18, first, the fibers 19 and the blended material 20 are mixed in advance to form a lining material. Thereafter, as shown in FIG. 7, a predetermined amount of the lining material is put into a die (die) 31, and the lining material is pressurized with a predetermined pressure by the punch 32 while heating the lining material. Is molded for a short time. Thereafter, the pressurization by the punch 32 is once released (first pressing step).

  Thereafter, as shown in FIG. 8, the pair of removal plates 33 is disposed on the upper surface of the attachment portion 22. At this time, each removing plate 33 is arranged on the upper surface of the mounting portion 22 with a part of the upper surface of the mounting portion 22 exposed. A release agent is attached to each of the front and back surfaces of each removal plate 33 (plate arrangement step).

  FIG. 11 is a top view showing each removal plate 33 of FIG. Each removal plate 33 is formed into a frame shape (annular) by being brought into contact with each other. In this example, each removal plate 33 is overlaid on the upper surface of the attachment portion 22 in a state where the removal plates 33 are brought into contact with each other. Therefore, in the state where each removal plate 33 is superimposed on the upper surface of the attachment portion 22, only the central portion of the upper surface of the attachment portion 22 is exposed. As the material of the removal plate 33, for example, iron, fluorine resin, or the like is used. As the release agent attached to the removal plate 33, fluorine-based resin (PFA (tetrafluoroethylene / perfluoropropyl vinyl ether), FEP (tetrafluoroethylene / hexafluoropropylene copolymer), etc.), CF3-based, etc. Polymer or the like is used. The release agent is attached to the removal plate 33 by, for example, coating or baking.

  Thereafter, as shown in FIG. 9, the lining material is put into the die 31 so as to cover the exposed portion of the upper surface of the mounting portion 22 in the die 31 and the removal plate 33, and the lining material is heated again. The lining material is pressurized at a predetermined pressure by the punch 32 for a predetermined time. Thereby, as shown in FIG. 10, the connection part 23 and the contact part 21 which were united with the attachment part 22 are shape | molded. Thereafter, the pressurization by the punch 32 is released (second pressing step).

  Thereafter, the integrated contact portion 21, attachment portion 22 and connecting portion 23 are removed from the die 31 together with the removal plate 33. At this time, each removal plate 33 is exposed to the outside from between the contact portion 21 and the attachment portion 22 while being sandwiched between the contact portion 21 and the attachment portion 22 (mold release step).

  Thereafter, each removal plate 33 is removed from between the contact portion 21 and the attachment portion 22. At this time, since the release agent is attached to each of the front surface and the back surface of each removal plate 33, each removal plate 33 can be easily removed from between the contact portion 21 and the attachment portion 22. Thereby, the predetermined clearance gap 24 is formed between the contact part 21 and the attachment part 22 (removal process).

  Then, the brake lining 18 is completed by baking the contact part 21, the attachment part 22, and the connection part 23 at predetermined temperature. The completed brake lining 18 is attached to the shoe 16 by fixing the attachment portion 22 to the shoe 16 with, for example, an adhesive.

  In such a brake lining 18, a predetermined gap 24 that allows elastic deformation of the contact portion 21 in a direction approaching the shoe 16 is provided between the contact portion 21 and the mounting portion 22 so as to avoid the connecting portion 23. Therefore, the contact portion 21 that contacts the rotor 3 can be easily elastically deformed in a direction approaching the shoe 16. Thereby, the impact generated by the contact of the brake lining 18 with the rotor 3 can be absorbed by the brake lining 18, and the generation of noise can be suppressed. Accordingly, it is not necessary to use diatomaceous earth or a material that easily wears for the brake lining 18 at the sacrifice of the friction characteristics, so that the friction characteristics can be ensured and the manufacturing cost can be reduced. In addition, since it is not necessary to produce a brake lining by combining materials having different properties in order to reduce noise, it is possible to reduce the variation of the friction coefficient between the brake lining 18 and the rotor 3. Furthermore, since the contact portion 21 can be easily elastically deformed in accordance with the shape of the rotor 3, a contact area with the rotor 3 can be ensured. Therefore, the braking force can be generated more reliably.

  In addition, since the predetermined gap 24 is provided between the outer peripheral portion of the contact portion 21 and the mounting portion 22, the outer peripheral portion of the contact portion 21 even when the brake lining 18 hits the rotor 3. Can be easily elastically deformed, and generation of noise when the brake lining 18 contacts the rotor 3 can be suppressed.

  Further, in such a manufacturing method of the brake lining 18, the lining material is put into the die 31 and pressed, and the removing plate 33 with the release agent attached to each of the front surface and the back surface is disposed in the die 31, and then the lining is formed. The contact portion 21, the attachment portion 22, and the connecting portion 23 are integrally formed by putting the material into the die 31 and pressurizing again, and the removal plate 33 is removed from between the contact portion 21 and the attachment portion 22 to make the contact portion. Since the predetermined gap 24 is formed between the contact portion 21 and the mounting portion 22, the predetermined gap 24 is formed between the contact portion 21 and the mounting portion 22 without performing work such as cutting. be able to. Therefore, the brake lining 18 can be manufactured by utilizing a normal facility used for forming the brake lining, and investment in the manufacturing facility of the brake lining 18 can be suppressed.

  In the above example, the brake lining 18 is composed of the fibers 19 and the blended material 20, but a ceramic-based abrasive may be further included in the material constituting the brake lining 18. In this way, the friction coefficient between the brake lining 18 and the rotor 3 can be increased while suppressing noise when the brake lining 18 contacts the rotor 3. Thereby, since the force which makes the brake lining 18 contact the rotor 3 can be made small, not only the urging force of the urging spring 13 can be made small, but also the electromagnetic attraction force by energizing the brake coil 14 can be made small. Can do. Therefore, the power consumption of the brake device 9 can be reduced, and the biasing spring 13, the brake coil 14, the fixed iron core 12 and the movable iron core 15 can be reduced in size, and the overall size of the brake device 9 can be reduced. Can be planned.

Embodiment 2. FIG.
In the first embodiment, the predetermined gap 24 is provided between the contact portion 21 and the attachment portion 22, but the contact portion 21 is directly opposed to the shoe 16 by eliminating the attachment portion 22. A predetermined gap 24 may be provided between the shoe 21 and the shoe 16.

  12 is a cross-sectional view showing a brake lining according to Embodiment 2 of the present invention. In the figure, the brake lining 18 includes a contact portion 21 that contacts and separates from the inner peripheral surface of the drum portion 6, and a protrusion 41 that protrudes from the contact portion 21 toward the shoe 16 and is attached to the shoe 16. The material constituting the brake lining 18 is the same as that of the brake lining 18 of the first embodiment.

  The protruding portion 41 protrudes from only a part of the contact portion 21. Further, the protruding portion 41 is fixed to the shoe 16 with an adhesive or the like in a state where the contact portion 21 is separated from the shoe 16. Thus, a predetermined gap (space) 24 that allows elastic deformation of the contact portion 21 in a direction approaching the shoe 16 is provided between the contact portion 21 and the shoe 16 so as to avoid the protruding portion 41. The predetermined gap 24 is opened to the outside from between the contact portion 21 and the shoe 16.

  In this example, the protruding portion 41 protrudes from the center portion of the contact portion 21. Therefore, in this example, the predetermined gap 24 is formed between the contact portion 21 and the shoe 16 so as to surround the protruding portion 41. Other configurations are the same as those in the first embodiment.

  The brake lining 18 according to the second embodiment is manufactured by a procedure that omits the first pressing step according to the first embodiment.

  That is, first, a pair of removal plates with release agents attached to the front and back surfaces are placed in the mold. Each removal plate is formed into a frame shape (annular) by being brought together. The removal plate may be a single frame-shaped plate (plate arrangement step).

  Thereafter, the lining material prepared by mixing the fibers 19 and the blended material 20 in advance is put in a mold, and the lining material is pressurized with a punch at a predetermined pressure for a predetermined time while heating. Thereby, the contact part 21 and the protrusion part 41 are integrally molded. Thereafter, the pressure applied by the punch is released (pressing process).

  Then, the contact part 21 and the protrusion part 41 are removed from the mold together with the removal plate (mold release process), and the removal plate is removed from the contact part 21 and the protrusion part 41 (removal process).

  Then, the brake lining 18 is completed by baking the contact part 21 and the protrusion part 41 at predetermined temperature. The completed brake lining 18 is attached to the shoe 16 by fixing the protruding portion 41 to the shoe 16 with, for example, an adhesive or the like while the contact portion 21 is separated from the shoe 16.

  In such a brake lining 18, the protruding portion 41 protrudes from the contact portion 21 toward the shoe 16, and a predetermined gap 24 that allows elastic deformation of the contact portion 21 in a direction approaching the shoe 16 is formed between the contact portion 21 and the shoe 16. Therefore, the contact portion 21 that contacts the rotor 3 can be easily elastically deformed in a direction approaching the shoe 16. Thereby, like Embodiment 1, it can not only suppress generation | occurrence | production of noise but can also aim at reduction of manufacturing cost. Further, the braking force can be generated more reliably.

  Moreover, in such a manufacturing method of the brake lining 18, after arranging the removal board which attached the mold release agent to each of the surface and the back surface in a type | mold, the lining material is put into a type | mold, and it presses by contacting. Since the brake lining 18 is manufactured by integrally forming the protruding portion 41 and removing the removal plate from the contact portion 21 and the protruding portion 41, the normal equipment used for forming the brake lining is utilized. Thus, the brake lining 18 can be manufactured, and investment in manufacturing equipment for the brake lining 18 can be suppressed. Further, the number of manufacturing steps can be reduced as compared with the first embodiment, and the brake lining 18 can be manufactured more easily.

Embodiment 3 FIG.
13 is a cross-sectional view showing a brake lining 18 according to Embodiment 3 of the present invention. In the drawing, the attachment portion 22 is fixed to a substrate (detachable member) 51 that can be attached to and detached from the shoe 16. The brake lining 18 is directly formed on the substrate 51. In this example, the substrate 51 is fixed to the shoe 16 by a plurality of screws (fastening members).

  The material constituting the attachment portion 22 is different from the material constituting the contact portion 21 and the connecting portion 23. The material constituting the contact portion 21 and the connecting portion 23 is the same as the material constituting the brake lining 18 of the first embodiment.

  The attachment portion 22 is composed of the fiber 19 and the bonding preparation material 52. The fibers 19 included in the material constituting the attachment portion 22 are the same as the fibers 19 included in the material constituting the contact portion 21 and the connecting portion 23. The bonding preparation material 52 is a material in which the mixing ratio of the binder is made larger than that of the preparation material 20 included in the material constituting the contact portion 21 and the connecting portion 23. Therefore, the material constituting the attachment portion 22 is a material having a larger adhering force to the substrate 51 than the material constituting the contact portion 21 and the connecting portion 23. Other configurations are the same as those in the first embodiment.

  Next, the manufacturing method of the brake lining 18 by Embodiment 3 is demonstrated. FIG. 14 is a schematic cross-sectional view showing a state when the brake lining 18 of FIG. 13 is manufactured. First, a cylindrical die (die) 53 having a rectangular cross section is placed upright, the substrate 51 is applied to the lower surface of the die 53, and the opening on the lower surface of the die 53 is closed with the substrate 51. In addition, a first lining material in which the fibers 19 and the compounding material 52 for bonding are mixed and a second lining material in which the fibers 19 and the compounding material 20 are mixed are prepared in advance.

  Thereafter, a predetermined amount of the first lining material is placed in the die 53 and the first lining material is placed on the upper surface of the substrate 51. Thereafter, the first lining material is pressurized at a predetermined pressure by a punch while heating the first lining material. As a result, the attachment portion 22 is formed in the die 53. Thereafter, the pressurization by the punch is once released (first pressing step).

  Thereafter, as in the first embodiment, a pair of removal plates 33 each having a release agent attached to each of the front surface and the back surface is disposed on the upper surface of the attachment portion 22 (plate disposing step).

  Thereafter, the second lining material is put into the die 53, and the first and second lining materials are heated together while being heated at a predetermined pressure for a predetermined time. Thereafter, the pressure applied by the punch is released. Thereby, as shown in FIG. 14, the connection part 23 and the contact part 21 which were united with the attaching part 22 are shape | molded (2nd press process).

  Thereafter, the contact portion 21, the attachment portion 22, and the connecting portion 23 are removed from the die 53 together with the removal plate 33. At this time, the attachment portion 22 is fixed to the substrate 51 (mold release step).

  Thereafter, each removal plate 33 is removed from between the contact portion 21 and the attachment portion 22, and a predetermined gap 24 is formed between the contact portion 21 and the attachment portion 22 (removal step).

  Then, the brake lining 18 fixed to the board | substrate 51 is completed by baking the contact part 21, the attachment part 22, and the connection part 23 at predetermined temperature. The brake lining 18 is attached to the shoe 16 by fixing the substrate 51 to the shoe 16 with a screw. The brake lining 18 is removed from the shoe 16 by removing the screw.

  In such a brake lining 18, the mounting portion 22 is fixed to a substrate 51 that can be attached to and detached from the shoe 16. Therefore, by attaching and detaching the substrate 51 to and from the shoe 16, the brake lining 18 is attached to the shoe 16. Can be made detachable. Thereby, attachment / detachment of the brake lining 18 to the shoe 16 can be facilitated. Further, since it is not necessary to directly fix the brake lining 18 to the shoe 16, the manufacturing process can be simplified and the manufacturing cost can be reduced.

  In the above example, the material constituting the attachment portion 22 and the material constituting the contact portion 21 and the connection portion 23 are different from each other, but the material constituting the attachment portion 22 and the connection portion The material constituting the contact portion 21 may be the same material, and the material constituting the contact portion 21 may be different from the material of the attachment portion 22 and the connecting portion 23.

  In the above example, the brake lining 18 having the contact portion 21, the attachment portion 22, and the connecting portion 23 is fixed to the substrate 51. However, the brake lining 18 of the second embodiment having the contact portion 21 and the protrusion 41 is used. May be fixed to the substrate 51. In this case, the protruding portion 41 is fixed to the substrate 51. The predetermined gap is formed between the contact portion 21 and the substrate 51 so as to avoid the protruding portion 41.

Embodiment 4 FIG.
FIG. 15 is a sectional view showing a brake lining according to Embodiment 4 of the present invention. FIG. 16 is a sectional view taken along line XVI-XVI in FIG. In the figure, the brake lining 18 has a holding plate 61 that is harder than the contact portion 21, the attachment portion 22, and the connection portion 23 in addition to the contact portion 21, the attachment portion 22, and the connection portion 23 similar to those of the first embodiment. ing.

  The holding plate 61 is disposed between the contact portion 21 and the attachment portion 22 so as to avoid the connecting portion 23. Further, the holding plate 61 is overlaid on the mounting portion 22 in a state of being separated from the contact portion 21. Thus, a predetermined gap 24 is provided between the contact portion 21 and the holding plate 61 to allow elastic deformation of the contact portion 21 in a direction approaching the shoe 16 (that is, a direction approaching the attachment portion 22). Yes. A width dimension of the predetermined gap 24 (a distance between the contact portion 21 and the holding plate 61) is set smaller than the thickness of the holding plate 61.

  In this example, the holding plate 61 is disposed so as to surround the connecting portion 23. In this example, the shape of the holding plate 61 is a frame shape. Furthermore, in this example, the width dimension of the predetermined gap 24 is a dimension in submillimeter units. As a material of the holding plate 61, for example, a metal such as iron, a heat-resistant polyimide resin, or the like is used.

  The holding plate 61 can come into contact with an outer peripheral end portion (a part) of the contact portion 21 by elastic deformation of the contact portion 21 in a direction approaching the attachment portion 22. Thereby, the elastic deformation amount of the contact part 21 in the direction approaching the attachment part 22 is regulated. That is, the holding plate 61 restricts the amount of elastic deformation of the contact portion 21 by receiving the contact portion 21 that is elastically deformed in a direction approaching the attachment portion 22. Other configurations are the same as those in the first embodiment.

  Next, a method for manufacturing the brake lining 18 according to the fourth embodiment will be described. 17 and 18 are cross-sectional views showing a procedure for manufacturing the brake lining 18 of FIG. First, as in the first embodiment, a predetermined amount of the lining material is placed in the die 31 and the lining material is pressurized while being heated, thereby forming the mounting portion 22 (first pressing step).

  Thereafter, as shown in FIG. 17, a holding plate 61 on which a release layer 62 having a predetermined thickness is formed is disposed on the upper surface of the attachment portion 22. At this time, the holding plate 61 is disposed on the upper surface of the mounting portion 22 with a part of the upper surface of the mounting portion 22 exposed. The release layer 62 is formed only on the front surface and the back surface of the holding plate 61. Further, the holding plate 61 is overlaid on the attachment portion 22 with the back surface in contact with the upper surface of the attachment portion 22. The thickness of the release layer 62 is made smaller than the thickness of the holding plate 61. As the material of the release layer 62, the same material as that of the release agent of the first embodiment is used. The release layer 62 is formed on the surface of the holding plate 61 by, for example, coating or baking (plate arranging step).

  Thereafter, as in the first embodiment, the lining material is put into the die 31 and the lining material is again pressurized while being heated. Thereby, as shown in FIG. 18, the connection part 23 and the contact part 21 which were united with the attaching part 22 and the holding plate 61 are shape | molded (2nd press process).

  Then, the contact part 21, the attachment part 22, and the connection part 23 which were united are removed from the die | dye 31 with the holding plate 61 (mold release process).

  Thereafter, the release layer 62 is carbonized by firing, and the release layer 62 is removed from between the contact portion 21 and the holding plate 61. Thereby, a predetermined gap 24 is formed between the contact portion 21 and the holding plate 61, and the brake lining 18 having the contact portion 21, the mounting portion 22, the connecting portion 23, and the holding plate 61 is completed (removal step).

  Thereafter, the brake lining 18 is attached to the shoe 16 in the same manner as in the first embodiment.

  Here, when the pressing force of the brake lining 18 against the inner peripheral surface of the drum portion 6 is large, if the width dimension of the predetermined gap 24 is too wide, the elastic deformation of the contact portion 21 is not regulated, and the elastic deformation of the contact portion 21 is not performed. The amount can become too large. In this case, in order to reduce the amount of elastic deformation of the contact portion 21, it is necessary to reduce the width dimension of the predetermined gap 24. However, in the method for manufacturing the brake lining 18 according to the first embodiment, the removal plate 33 If the thickness is too thin, the removal plate 33 may be deformed by the pressurization during the second pressing step, and the uniform gap 24 may not be obtained.

  According to the method for manufacturing the brake lining 18 according to the fourth embodiment, the contact portion 21, the attachment portion 22, and the connecting portion 23 are formed in a state in which the holding plate 61 on which the release layer 62 is formed is assembled. Since the predetermined gap 24 is formed by removing only the release layer 62 while leaving it, it is not necessary to reduce the thickness of the holding plate 61, and the strength of the holding plate 61 is set to the pressure during the second pressing step. The strength can be withstood. As a result, the predetermined gap 24 having a small width dimension can be formed more uniformly. Therefore, the brake lining 18 that can be applied also to the brake device 9 having a large braking force on the rotor 3 can be easily and inexpensively manufactured by ordinary equipment.

  In the brake lining 18 according to the fourth embodiment, the holding plate 61 is disposed between the contact portion 21 and the mounting portion 22, and a predetermined gap 24 is provided between the contact portion 21 and the holding plate 61. Therefore, the width dimension of the predetermined gap 24 can be easily reduced. Thereby, the elastic deformation amount of the contact portion 21 can be regulated by the holding plate 61, and the elastic deformation amount of the contact portion 21 can be prevented from becoming too large. Therefore, while ensuring the strength of the brake lining 18, it is possible to absorb the impact generated by the contact of the brake lining 18 with the rotor 3 by the brake lining 18 and suppress the generation of noise. Thereby, the brake lining 18 can be applied also to the brake device 9 having a large braking force against the rotor 3.

  In the above example, the holding plate 61 is applied to the brake lining 18 according to the first embodiment, but the holding plate 61 may be applied to the brake lining 18 according to the third embodiment.

  In the first to fourth embodiments, the brake lining 18 is applied to the brake device 9 of the elevator hoisting machine. For example, the brake lining 18 is applied to a brake device incorporated in an industrial device such as a hoist, an electric motor, or an automobile. A lining 18 may be applied.

  3 Rotor (Rotating body), 16 Shoe, 21 Contact portion, 22 Mounting portion, 23 Connecting portion, 24 Predetermined gap, 31, 53 type, 33 Removal plate, 41 Protruding portion, 51 Substrate (detachable member), 61 Holding plate 62 Release layer.

Claims (6)

A contact portion that contacts and separates from the rotating body by displacement of the shoe with respect to the rotating body;
The contact portion is disposed closer to the shoe than the contact portion, and the attachment portion attached to the shoe, and the contact portion and the attachment portion are connected to each other, and the contact portion and the attachment portion are kept apart from each other. With a connecting part,
The contact portion is elastically deformable by receiving a force in a direction approaching the shoe by contact with the rotating body,
Between the contact portion and the attachment portion, a predetermined gap that allows elastic deformation of the contact portion in a direction approaching the shoe is provided to avoid the coupling portion,
The mounting portion is fixed to a detachable member that is detachable from the shoe,
Brake lining characterized in that the material constituting the mounting portion is a material having a greater adhesive force to the detachable member than the material constituting the contact portion. A contact portion that contacts and separates from the rotating body by displacement of the shoe with respect to the rotating body;
A mounting portion that is disposed closer to the shoe than the contact portion and is attached to the shoe;
A connecting part that connects the contact part and the mounting part and keeps the contact part and the mounting part separated from each other, and is disposed between the contact part and the mounting part so as to avoid the connecting part. Holding plate,
The contact portion is elastically deformable by receiving a force in a direction approaching the shoe by contact with the rotating body,
Between the contact portion and the attachment portion, a predetermined gap that allows elastic deformation of the contact portion in a direction approaching the shoe is provided to avoid the coupling portion,
The brake lining according to claim 1, wherein the predetermined gap is formed between the contact portion and the holding plate.   The brake lining according to claim 1 or 2, wherein the predetermined gap is provided between an outer peripheral portion of the contact portion and the attachment portion.   The brake lining according to claim 2 or 3, wherein the attachment portion is fixed to an attachment / detachment member that can be attached to and detached from the shoe. A contact portion that contacts and separates from the rotating body; an attachment portion that is attached to the shoe; and a connection portion that connects the contact portion and the attachment portion, and maintains the contact portion and the attachment portion apart from each other. And a brake lining manufacturing method for manufacturing a brake lining in which a predetermined gap is provided between the contact portion and the attachment portion so as to avoid the connecting portion,
The attachment portion is formed by placing a first lining material having a greater adhesive force to the attachment / detachment member with respect to the shoe than the second lining material into a mold and applying pressure to the attachment / detachment member. A first pressing step,
After the first pressing step, a plate disposing step of disposing a removing plate with a release agent on each of the front surface and the back surface on the upper surface of the mounting portion with a part of the upper surface of the mounting portion exposed.
After the plate placement step, the second lining material is placed in the mold and pressed so as to cover the exposed portion of the upper surface of the mounting portion and the removal plate, thereby integrating the mounting portion with the mounting portion. A second pressing step for forming the connecting portion and the contact portion;
After the second pressing step, the contact portion, the connecting portion, and the attachment portion are removed from the mold together with the removal plate, and after the release step, the gap is between the contact portion and the attachment portion. A method for manufacturing a brake lining, comprising: a removal step of forming the predetermined gap between the contact portion and the attachment portion by removing a removal plate. A contact portion that contacts and separates from the rotating body, an attachment portion that is attached to the shoe, a connection portion that connects the contact portion and the attachment portion, and maintains the state where the contact portion and the attachment portion are separated from each other; A brake for manufacturing a brake lining having a holding plate disposed between the contact portion and the mounting portion while avoiding a connecting portion, and having a predetermined gap between the contact portion and the holding plate A method of manufacturing a lining,
A first pressing step of forming the mounting portion by pressing the lining material into a mold,
After the first pressing step, a holding plate having a release layer having a predetermined thickness formed only on the front surface and the back surface of the mounting portion is exposed with a part of the upper surface of the mounting portion exposed. Plate placement process to be placed on the top surface,
After the plate arranging step, the lining material is put into the mold and pressed so as to cover the exposed portion of the upper surface of the mounting portion and the holding plate, thereby integrating the mounting portion and the holding plate. A second pressing step for forming the connecting portion and the contact portion;
After the second pressing step, the contact portion, the connecting portion, and the mounting portion are removed from the mold together with the holding plate, and after the releasing step, the gap is between the contact portion and the holding plate. A method for producing a brake lining, comprising: a removal step of forming the predetermined gap between the contact portion and the holding plate by removing the release layer by firing.

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