TWI621787B - Caliper device and disk brake device including the same - Google Patents

Abstract

The caliper device (20) of the present invention is used by a user together with a brake pad (61) for braking the rotation of a rotating body (4 or 6), and is provided with a braking arm (40), which is driven by a driving mechanism (80) Rocking relative to the device body (30), and moving the brake block (61) to a braking position or a non-braking position; and a friction mechanism (90), which makes the braking arm (40) relative to the device body (30) The friction of) is increased relative to the friction.

Description

Caliper device and disc brake device provided with the same

The invention relates to a caliper device and a disc brake device provided with the device.

Conventionally, there is known a disc brake device that applies braking force to a wheel by pressing a brake pad against a disc rotor that rotates integrally with an axle supporting a wheel of a railway vehicle. This disc brake device is provided with a caliper device having a driving mechanism that moves a brake block by a fluid such as compressed air, and a brake arm that is connected to the driving mechanism and causes the brake block to be driven by the driving mechanism. The rotor is pivoted around the arm so as to approach and move away from the dish rotor (for example, refer to Patent Document 1). The disc brake device (or its caliper device) of Patent Document 1 includes a friction mechanism configured to restrict the free swinging of the brake pad seat with respect to the brake arm. [Prior Art Document] [Patent Document 1] [Patent Document 1] Japanese Patent Laid-Open No. 2010-164183

However, vibrations generated during the travel of a railway vehicle are transmitted to the caliper device. Therefore, in the previous caliper device, vibration was also transmitted to the brake arm and the brake pad seat, and thus the brake arm and the brake pad seat were each shaken. As a result, in the state where the previous caliper device did not give braking force to the wheel, although the disc rotor and the brake pad should be separated, sometimes the brake pad and the disc rotor are repeatedly contacted due to the vibration transmitted to the caliper device. This contact can cause noise or damage to the brake shoes. In the caliper device of Patent Document 1, the friction of the brake pad seat is suppressed by the friction mechanism, and the frequency of contact between the brake pad and the disc rotor is reduced. An object of the present invention is to provide a caliper device and a disc brake device having a novel structure that reduces the frequency of contact between a brake pad and a rotating body. (1) One aspect of the present invention is to provide a caliper device for use with a brake pad for braking rotation of a rotating body. The caliper device includes a braking arm that swings relative to the device body by a driving mechanism and moves the brake block to a braking position and a non-braking position; and a friction mechanism that causes the braking arm to be relative to the device body. The shaking is increased relative to the friction. According to this caliper device, by using the increased friction of the friction mechanism to minimize or limit the swing of the brake arm, the brake pad can be maintained in the non-braking position during non-braking. For example, the following situations were suppressed: The vibration caused by the vehicle vibration caused the braking arm to swing during non-braking, and the brake pads contacted the rotating body during non-braking. (2) The friction mechanism may include a friction member that generates an arm restraining friction force that prevents the braking arm from swinging relative to the device body. (3) The friction mechanism is configured so that the magnitude of the frictional force for arm restraint can be adjusted in a stepless or stepwise manner. (4) In order to adjust the magnitude of the frictional force for arm restraint, a fixed position adjusting mechanism for adjusting the fixed position of the frictional member may be provided. (5) In some examples, the caliper device further includes a pivot for an arm, which pivotably connects the braking arm and the device body, and the friction member of the friction mechanism is connected to the arm. The arm restraint friction force is generated by sliding contact with one of the pivot shaft, the device body, and the brake arm. (6) In some examples, the brake pad is used to clamp one of the first and second brake pads of the rotating body, and the brake arm is a first piece connected to the first and second brake pads. In the case of one of the second braking arms, the friction mechanism may increase the friction relative to the shaking of the one braking arm with respect to the device body. According to this caliper device, the friction mechanism suppresses excessively restricting the rocking of a pair of braking arms. (7) In some examples, a driving mechanism is further provided. The driving mechanism is supported by the device body, and includes a fixed-side structure and a movable-side structure, and the braking arm is connected to the fixing of the driving mechanism. The side structure, and the other brake arm is connected to the movable side structure of the drive mechanism. According to the caliper device, the friction mechanism restricts the swinging of a braking arm connected to the fixed-side structure of the driving mechanism having a larger inertial force than the movable-side structure, thereby effectively restricting the swinging of the braking arm. (8) In some examples, the brake arm includes: an insertion portion for inserting an arm supported by the device body with a pivot; an input portion extending from the insertion portion; and an output portion between the The input section extends in a different direction from the insertion section; and the driving mechanism is connected to the input section so as to apply a driving force to the input section, and the output section is connected via a pivot for a brake pad having a pivot axis. The friction mechanism is connected to a brake pad seat for mounting the brake pad, and the friction mechanism is a driving side that applies friction to at least one of the input portion, the insertion portion, the output portion, the device body, and the arm pivot. The friction mechanism, the caliper device further includes a brake-side friction mechanism, the brake-side friction mechanism is different from the drive-side friction mechanism, and is at least one of the output portion, the brake pad pivot, and the brake pad seat. Gives friction. According to this caliper device, in addition to restricting the relative movement of the brake arm and the brake pad seat by the friction force provided by the brake-side friction mechanism, the swing of the brake arm is restricted by the friction force provided by the drive-side friction mechanism. Thereby, the following situations are suppressed: the vibration is transmitted to the brake arm due to the vibration of the vehicle, whereby the brake arm is swung around the pivot axis of the arm pivot, and the brake pad seat is pivoted about the pivot axis of the brake pivot. Shake. Therefore, repeated contact between the brake pad and the disc rotor caused by the vibration of the vehicle is suppressed. Therefore, the frequency of contact between the brake pad and the disc rotor can be further reduced. (9) In some examples, the friction mechanism is disposed on the input portion side with respect to the arm pivot. In the reference example in which the friction mechanism is disposed closer to the output side than the arm pivot, in order to avoid interference between the friction mechanism and the disc rotor, the distance between the disc rotor and the arm pivot must be more than that of the friction mechanism. The spare space of the configuration space. Therefore, the size of the caliper device is increased. In contrast, according to the caliper device of the present invention, since the friction mechanism is not arranged between the dish rotor and the arm pivot, the distance between the dish rotor and the arm pivot is suppressed from increasing. Therefore, it is possible to suppress an increase in size of the caliper device. (10) In some examples, the friction member is mounted on the device body and includes a friction surface pressed against one of the brake arm and the arm pivot. According to this caliper device, since the friction member is mounted on the device body which is a constituent element of the caliper device, no special parts for mounting the friction member are needed, and the number of parts of the friction mechanism can be reduced. (11) In some examples, the friction member is mounted on one of the brake arm and the arm pivot, and includes friction that is pressed against the other of the brake arm and the arm pivot. surface. According to this caliper device, since the friction member is mounted on a brake arm or an arm pivot which is a constituent element of the caliper device, no special parts for mounting the friction member are required, and the number of parts of the friction mechanism can be reduced. (12) In some examples, the friction member is mounted on one of the brake arm and the arm pivot, and includes a friction surface pressed against the device body. According to this caliper device, since the friction member is mounted on a brake arm or an arm pivot which is a constituent element of the caliper device, no special parts for mounting the friction member are required, and the number of parts of the friction mechanism can be reduced. (13) In some examples, the friction member includes a friction surface pressed against the arm pivot. According to this caliper device, since the device body or the brake arm does not need to have a dedicated shape for contacting the friction member, the shape of the device body or the brake arm is prevented from being complicated. (14) In some examples, the friction mechanism further includes a pressing member that presses the friction member toward the arm pivot. According to this caliper device, since the friction member is pressed against the arm pivot by the pressing member, the frequency of the friction member away from the arm pivot is reduced, and the friction force can be stably applied to the arm pivot. (15) In some examples, the friction member and the pressing member are accommodated and supported in an accommodation portion formed in the apparatus body or the brake arm, and the friction mechanism further includes a plug closing the accommodation portion. According to this caliper device, since the friction member and the pressing member are disposed in a space sealed by the plug, foreign matter is suppressed from being interposed between the friction member and the member in contact with the friction member, and the friction force caused by the foreign matter is suppressed. change. Therefore, the friction force of the friction mechanism is stable. (16) In some examples, the plug includes a mounting portion for mounting the pressing member. For example, when a plurality of disc springs are laminated as a pressing member, when a worker assembles a friction mechanism in a caliper device, after inserting the disc springs into the receiving portion, the plug is installed in the receiving portion. However, in this assembly method, since the receiving portion is closed by the plug, it is difficult for the operator to visually recognize the laminated state of the disc springs from the outside of the receiving portion, and it is difficult to confirm the number of the disc springs. In contrast, according to the caliper device of the present invention, since the pressing member is mounted on the mounting portion of the plug, the operator can easily recognize the disk shape when a plurality of disk springs (pressing members) are mounted on the mounting portion. The laminated state of the spring. Therefore, the operator can easily check the number of disc springs. Therefore, the friction mechanism is suppressed from being assembled to the caliper device in a state where the number of disc springs is incorrect. (17) In some examples, the receiving portion includes a stepped portion in contact with the plug in an insertion direction of the plug. According to the caliper device, the position of the plug relative to the receiving portion is determined by the contact of the plug with the stepped portion of the receiving portion. Therefore, the assembly efficiency of the friction mechanism is improved. (18) In some examples, the brake-side friction mechanism is disposed on the insertion portion side with respect to the brake pad pivot. According to this caliper device, it is easier to arrange the brake-side friction mechanism inside the caliper device than the reference example in which the brake-side friction mechanism is disposed on the side opposite to the insertion portion side with respect to the brake block pivot. Therefore, an increase in the size of the caliper device is suppressed. (19) In some examples, the brake-side friction mechanism is mounted on one of the brake pad holder and the brake pad pivot, and is provided with another one that is pressed against the brake pad holder and the brake pad pivot. One friction member. According to the caliper device, since the friction member is mounted on a brake pad seat or a pivot for the brake block which is a constituent element of the caliper device, no special parts for installing the friction member are required, and the number of parts of the brake-side friction mechanism can be reduced. (20) In some examples, the brake-side friction mechanism is mounted on one of the brake pad holder and the output portion, and includes a friction member that is pressed against the other of the brake pad holder and the output portion. According to the caliper device, since the friction member is mounted on a brake pad seat or an output portion which is a constituent element of the caliper device, no special parts for mounting the friction member are required, and the number of parts of the brake-side friction mechanism can be reduced. (21) In some examples, the brake-side friction mechanism is mounted on one of the output section and the brake pad pivot, and includes the other being pressed against the output section and the brake pad pivot. Of friction members. According to this caliper device, since the friction member is mounted on the output part or the pivot for the brake pad as a constituent element of the caliper device, no special parts for mounting the friction member are required, and the number of parts of the brake-side friction mechanism can be reduced. (22) In some examples, the brake-side friction mechanism includes a friction member pressed against the pivot for the brake pad. According to this caliper device, since it is not necessary to form a special shape on the brake pad or the brake arm for contacting the friction member, it is possible to suppress the complication of the shape of the brake pad seat or the brake arm. (23) In some examples, the brake-side friction mechanism further includes a pressing member that presses the friction member of the brake-side friction mechanism toward the brake pad pivot. According to this caliper device, since the friction member is pressed against the pivot for the brake pad by the pressing member, the frequency of the friction member away from the pivot for the brake pad is reduced, and the friction force can be stably applied to the pivot for the brake pad. (24) In some examples, the friction member of the brake-side friction mechanism is housed and supported in a housing portion formed in the brake pad seat or the brake arm, and the brake-side friction mechanism further includes a closed housing portion. The plug. According to this caliper device, since the friction member is disposed in a closed space, foreign matter is suppressed from being interposed between the friction member and a member that is in contact with the friction member, and fluctuation of frictional force due to the foreign matter is suppressed. Therefore, the friction force of the friction mechanism is stable. (25) In some examples, the brake-side friction mechanism further includes a pressing member that presses the friction member of the brake-side friction mechanism toward the brake pad pivot, and the brake-side friction mechanism The plug includes a mounting portion for mounting the pressing member of the braking-side friction mechanism. For example, when a plurality of disc springs are laminated as a pressing member, when the operator assembles the brake-side friction mechanism to the caliper device, after inserting the disc spring into the storage portion, the plug is installed in the storage portion. However, in this assembly method, since the receiving portion is closed by the plug, it is difficult for the operator to visually recognize the laminated state of the disc springs from the outside of the receiving portion, and it is difficult to confirm the number of the disc springs. In contrast, according to the caliper device of the present invention, since the pressing member is mounted on the mounting portion of the plug, the operator can easily recognize the disk shape when a plurality of disk springs (pressing members) are mounted on the mounting portion. The laminated state of the spring. Therefore, the operator can easily check the number of disc springs. Therefore, the brake-side friction mechanism is suppressed from being assembled to the caliper device in a state where the number of disc springs is incorrect. (26) In some examples, the receiving portion of the braking-side friction mechanism includes a stepped portion in contact with the plug in an insertion direction of the plug. According to the caliper device, the position of the plug relative to the receiving portion is determined by the contact of the plug with the stepped portion of the receiving portion. Therefore, the assembly efficiency of the brake-side friction mechanism is improved. (27) A disc brake device according to an aspect of the present invention includes the caliper device of at least one of the above (1) to (26), the caliper device applying braking force to a rotating body by supplying a fluid from a fluid system Way of composition. According to this disc brake device, the same effects as those described in the above (1) to (26) can be obtained. [Effects of the Invention] According to the present invention, it is possible to provide a caliper device and a disc brake device that reduce the frequency of contact between a brake pad and a disc rotor.

the following, Referring to the drawing, An embodiment of a disc brake device for a railway will be described.  As shown in Figure 1, The disc brake device 10 is mounted on a trolley 3 that supports a body 2 of a railway vehicle 1. The disc brake device 10 is pressed against a disc rotor 6 that rotates integrally with the axle 5 that rotates the wheels 4 of the trolley 3, The braking force is applied to the wheels 4.  The disc brake device 10 includes: Air supply and discharge part 11 as a fluid system; And at least one caliper device 20, It is fluidly connected to the air supply and discharge portion 11. The air supply and discharge unit 11 is mounted on the trolley 3, for example, The compressed air is supplied to the caliper device 20. The caliper device 20 is pressed against the disk rotor 6 mounted on the axle 5 by compressed air, for example. One air supply and discharge unit 11 can be fluidly connected to a plurality of caliper devices 20. When the air supply / discharge unit 11 applies braking force to the wheels 4, Supply compressed air to the caliper device 20, on the other hand, When the state in which the braking force is applied to the wheel 4 is set to the state in which the braking force is not applied to the wheel 4, The compressed air is discharged from the caliper device 20. Furthermore, The disc brake device 10 may be configured as follows: Instead of the compressed air of the air supply and discharge section 11, By using gases other than compressed air, Or other fluid such as hydraulic oil is supplied to the caliper device 20, The caliper device 20 is operated.  as shown in picture 2, The caliper device 20 includes: Device body 30, It is installed on the trolley 3 (refer to FIG. 1); And first brake arm 40 and second brake arm 50, These can be shaken with respect to the device body 30.  The device body 30 includes a substantially U-shaped arm support portion 31, This arm support portion 31 has a bottom portion 31A, And a first arm portion 31B and a second arm portion 31C that extend continuously from both sides of the bottom portion 31A and the bottom portion 31A. At the bottom 31A, The mounting portion 32 for mounting on the trolley 3 with four bolts (not shown) extends toward the side opposite to the side where the first arm portion 31B and the second arm portion 31C are arranged. Furthermore, The first arm portion 31B and the second arm portion 31C correspond to a shaft support portion.  The first brake arm 40 is connected to the first arm portion 31B via an arm pivot 21A having a pivot axis CD1. The arm pivot 21A can be rotated with respect to the first arm portion 31B, Moreover, it cannot rotate with respect to the 1st brake arm 40.  One pair of arms 41 of the first brake arm 40 extends so as to be spaced apart from each other in the axial direction of the arm pivot 21A and face each other. An insertion portion 42 into which the arm pivot 21A is inserted is formed in each arm 41. Between an insertion portion 42 and the arm pivot 21A, The key member 27A is inserted. With this, The relative rotation of the arm pivot 21A and the first brake arm 40 is restricted. The washer 28A covering the axial end surface of the arm pivot 21A and the end surface of the insertion portion 42 is fixed to the arm pivot 21A by a bolt 29A, This suppresses the key member 27A from falling out from between the arm pivot 21A and the insertion portion 42.  Each arm 41 is provided with: Output section 43, Which extends from the insertion portion 42; And input section 44, It extends from the insertion portion 42 in a direction different from the output portion 43 (the opposite direction in this embodiment). A front end connecting portion 45 that connects the pair of arms 41 to each other is formed at a front end portion of the output portion 43.  At the front end of the output section 43, With a pivot 22A for a brake pad having a pivot axis CB1, The first brake pad holder 60 is swingably connected to the output portion 43. The brake pad pivot 22A is inserted into one pair of support portions 62 of the first brake pad holder 60 and the front end connecting portion 45 of the first brake arm 40. The pivot 22A for a brake pad is fixed to the front-end connecting portion 45 by a bolt 23A so as not to be rotatable relative to the front-end connecting portion 45. on the other hand, It is supported in a state capable of rotating relative to the pair of support portions 62.  The second brake arm 50 is connected to the second arm portion 31C via an arm pivot 21B having a pivot axis CD2. The arm pivot 21B is rotatable relative to the second arm portion 31C, Do not rotate with respect to the second brake arm 50.  The pair of arms 51 of the second braking arm 50 has the same shape as the pair of arms 41 of the first braking arm 40, The symbols of the components of the second brake arm 50 are those in which the ten-digit number of the symbols of the components of the first brake arm 40 is changed from "4" to "5".  Similar to the relationship between the first brake arm 40 and the arm pivot 21A, By inserting the key member 27B between the arm pivot 21B and the insertion portion 52 of the second brake arm 50, The relative rotation of the arm pivot 21B and the second brake arm 50 is restricted. The washer 28B is fixed to the axial end of the arm pivot 21B by a bolt 29B, This suppresses the key member 27B from falling off from between the arm pivot 21B and the insertion portion 52.  At the front end of the output section 53, With a brake pad pivot 22B having a pivot axis CB2, A second brake pad holder 70 is swingably connected to the output portion 53. The brake pad pivot 22B is inserted into one pair of support portions 72 of the second brake pad holder 70 and the front end connecting portion 55 of the second brake arm 50. The pivot 22B for a brake pad is fixed to the front-end connecting portion 55 by a bolt 23B so as to be non-rotatable with respect to the front-end connecting portion 55. on the other hand, It is supported so that it can rotate with respect to a pair of support part 72.  As shown in Figure 3, The first braking arm 40 and the second braking arm 50 are arranged on both sides of the disc rotor 6 in the plate thickness direction of the disc rotor 6, The first brake pad holder 60 and the second brake pad holder 70 are in the thickness direction of the disc rotor 6. It is arranged to face the dish rotor 6. In each brake pad seat 60, 70, The brake pads 61 which are pressed against the disc rotor 6 are installed, 71.  For each brake arm 40, 50 of the input 44, 54 前 前 部 ， The front part, With fixed shaft 24A, 24B is equipped with a drive mechanism 80. Fixed shaft 24A, 24B is fixed to the input section 44, 54, However, it can be connected rotatably with respect to the drive mechanism 80. therefore, Brake arm 40, 50 is capable of rocking relative to the driving mechanism 80.  The driving mechanism 80 is based on the compressed air supplied from the air supply and discharge unit 11 (see FIG. 1), With input section 44, 54 front end (fixed shaft 24A, 24B) The input sections 44, 54 gives driving force. also, The drive mechanism 80 is provided with an input portion 44 for applying a force to move the brake pad 61 away from the disc rotor 6. 54's return spring (not shown). On the brake pads 61, 71 When the air supply and discharge unit 11 discharges the air pressure with the dish rotor 6 sandwiched, Since the force given to the input portion 44 by the return spring is greater than the force given to the input portion 44 by the drive mechanism 80 based on the compressed air, Therefore, the brake pad 61 is far away from the disc rotor 6.  As shown in FIG. 4A, The device main body 30 is provided with a driving-side friction mechanism 90 on the second arm portion 31C of the second braking arm 50 side, on the other hand, As shown in Figure 4B, The driving body friction mechanism 90 is not provided in the first arm portion 31B of the device body 30 on the side of the first braking arm 40. The driving-side friction mechanism 90 shown in FIG. 4A applies a frictional force to the arm pivot 21B, The second braking arm 50 is restricted from swinging with respect to the device body 30 (arm pivot 21B). The drive-side friction mechanism 90 is disposed on the side (drive mechanism side) where the input portion 54 is disposed with respect to the arm pivot 21B in the second arm portion 31C, And between one pair of arms 51 in the axial direction of the arm pivot 21B.  also, As shown in FIG. 4A, One of the pair of support portions 72 of the second brake pad seat 70, A brake-side friction mechanism 100 is provided, As shown in Figure 4B, One of the pair of support portions 62 of the first brake pad seat 60, A brake-side friction mechanism 100 is provided.  As shown in FIG. 4A, The brake-side friction mechanism 100 provided on the second brake pad holder 70 applies friction to the brake pad pivot 22B, The second brake pad holder 70 is restricted from swinging with respect to the brake pad pivot shaft 22B (output portion 53). As shown in Figure 4B, The brake-side friction mechanism 100 provided in the first brake pad holder 60 applies friction to the brake pad pivot 22A, The first brake pad holder 60 is restricted from swinging with respect to the brake pad pivot 22A (output portion 43). As shown in Figures 4A and B, The brake-side friction mechanism 100 is connected to the brake pad pivot 22A, 22B is provided with each brake arm 40, Insertion section 50, 52side. also, The brake-side friction mechanism 100 is provided in each brake arm 40, 50 one pair of arms 41, 51 outside.  Secondly, 5 to 8 The detailed structure of the driving-side friction mechanism 90 and its surroundings, The detailed structure of the braking-side friction mechanism 100 and its surroundings will be described. Furthermore, Since the configuration of the brake-side friction mechanism 100 provided on the first brake pad holder 60 is the same as the configuration of the brake-side friction mechanism 100 provided on the second brake pad holder 70, Therefore, the structure of the brake-side friction mechanism 100 provided in the first brake pad seat 60 will be described. The description of the structure of the brake-side friction mechanism 100 provided in the second brake shoe 70 is omitted.  As shown in Figure 5, The driving-side friction mechanism 90 includes a plug 91 attached to the second arm portion 31C of the device body 30. In plug 91, A friction member 93 having a friction surface and at least one (for example, three) pressing members 94 are attached. The friction member 93 has a bottomed cylindrical shape, for example. The pressing member 94 is, for example, a disc spring, The plug 91 and the friction member 93 are sandwiched. The number of pressing members 94 may be one, 2, Or 4 or more.  In plug 91, Continuously forming a cylindrical thread portion 91A, Cylindrical seal 91B, And a cylindrical mounting portion 91C. As shown in Figure 5, Outer diameter according to 91A, Seal 91B, And the order of mounting portion 91C is reduced, A first step difference portion 91D is formed between the sealing portion 91B and the screw portion 91A. A second step difference portion 91E is formed between the sealing portion 91B and the mounting portion 91C. In the outer peripheral portion of the threaded portion 91A, A male thread is formed (not shown in FIG. 5). On the outer periphery of the sealing portion 91B, A sealing member 92 is mounted. The sealing member 92 is, for example, an O-ring.  As shown in Figure 6, In the second arm portion 31C of the device body 30, A first storage portion 34 is formed that extends along the radial direction of the arm pivot 21B and accommodates the arm pivot 21B. At the center of the first accommodation portion 34 in the axial direction of the arm pivot 21B, A second accommodating portion 35 extending from the first accommodating portion 34 toward the driving mechanism side (see FIG. 4A) with respect to the arm pivot 21B and accommodating the driving-side friction mechanism 90 is formed. The first storage portion 34 and the second storage portion 35 have internal spaces communicating with each other.  On both sides of the portion of the arm pivot 21B housed in the first housing portion 34 facing the second housing portion 35, A pair of sealing members 25 are attached. The sealing member 25 is, for example, an O-ring. The portion of the arm pivot 21B between the pair of sealing members 25, It is filled with grease as an example of a lubricant.  The second storage unit 35 includes: Threaded part 35A, It is formed with a male thread; And seal 35B, It is formed by an inner diameter smaller than the inner diameter of the screw portion 35A. Between the threaded portion 35A and the sealing portion 35B, A step portion 35C is formed.  In a state where the driving-side friction mechanism 90 is assembled to the second arm portion 31C of the apparatus body 30, The plug 91 is screwed into the threaded portion 35A of the second receiving portion 35 by screwing the threaded portion 91A, The opening portion of the second storage portion 35 is closed. at this time, The first step difference portion 91D of the plug 91 is in contact with the step difference portion 35C of the second accommodation portion 35. also, The sealing portion 91B of the plug 91 is inserted into the sealing portion 35B of the second receiving portion 35, A seal member 92 seals the space between the seal portion 91B and the seal portion 35B. on the other hand, The first storage portion 34 seals the space between the first storage portion 34 and the arm pivot 21B by a pair of sealing members 25. Therefore, the internal space formed by the pair of seal members 25 and the seal member 92 of the plug 91 in the first accommodation portion 34 and the second accommodation portion 35 is hermetically closed. In the internal space of this closed state, A friction member 93 and a pressing member 94 are arranged. The friction member 93 is disposed closer to the arm pivot side than the pressing member 94.  The pressing member closest to the sealing portion 91B of the plural pressing members 94 is in contact with the second step difference portion 91E, The pressing member closest to the friction member 93 is in contact with the end surface of the cylindrical portion 93A of the friction member 93.  As shown in Figure 6, Since the plurality of pressing members 94 are sandwiched by the plug 91 and the friction member 93, Therefore, the plurality of pressing members 94 are compressed. The friction member 93 is pressed toward the arm pivot 21B by the plurality of pressing members 94, The friction member 93 is pressed against the arm pivot 21B. The frictional force generated when the frictional surface of the frictional member 93 and the arm pivot 21B are in sliding contact may be referred to as the arm restraint frictional force. The fixed position of the friction member 93 or the magnitude of the frictional force for arm restraint may be based on the number of the pressing members 94, size, The material and / or the insertion depth of the plug 91 are not adjusted stepwise or stepwise. In this embodiment, The threaded portion 91A of the plug 91 and / or the pressing member 94 are examples of a fixed position adjustment mechanism that adjusts the fixed position of the friction member 93.  As shown in Figure 7, The brake-side friction mechanism 100 is the same as the drive-side friction mechanism 90, With plug 101, Friction member 103, And at least one (for example, three) is pressed against the member 104. Plug 101, Friction member 103, And the pressing member 104 is a plug 91 with the driving-side friction mechanism 90, Friction member 93, The same shape as the pressing member 94 (both refer to FIG. 5). Furthermore, The number of the pressing members 104 may be one, 2 or more.  As shown in Figure 8, Each of the pivots 22A for a brake pad is inserted into each of the pair of support portions 62, A pair of sealing members 26 are attached. A portion between the pair of seal members 26 of one of the brake pad pivots 22A, And the supporting part 62 corresponding to this part, It is filled with grease as an example of a lubricant.  In support department 62, A receiving portion 63 is formed to receive the brake-side friction mechanism 100. Containment unit 63 includes: 63A, It is formed with a male thread; And seal 63B, It is formed by an inner diameter smaller than the inner diameter of the screw portion 63A. Between the threaded portion 63A and the sealing portion 63B, A step portion 63C is formed.  As shown in Figure 8, On plug 101, Continuously forming the threaded portion 101A, Seal 101B, And mounting section 101C. The plug 101 is screwed into the threaded portion 63A of the receiving portion 63 by screwing the threaded portion 101A, The opening portion of the receiving portion 63 is closed. at this time, The first step difference portion 101D of the plug 101 is in contact with the step difference portion 63C of the receiving portion 63. also, The sealing portion 101B of the plug 101 is inserted into the sealing portion 63B of the receiving portion 63, Further, a sealing member 102 mounted on the sealing portion 101B seals the space between the sealing portion 101B and the sealing portion 63B. on the other hand, Since the support portion 62 and the brake pad pivot 22A are sealed by a pair of sealing members 26, Therefore, the internal space formed by the pair of sealing members 26 and the sealing member 102 of the plug 101 in the receiving portion 63 and the supporting portion 62 is hermetically closed. In the internal space of this closed state, The friction member 103 and the pressing member 104 are arranged. The friction member 103 is disposed closer to the brake pad pivot shaft 22A than the pressing member 104.  As shown in Figure 8, Since the three pressing members 104 are sandwiched by the plug 101 and the friction member 103, Therefore, the three pressing members 104 are compressed. And The friction member 103 is pressed against the brake pad pivot 22A by the pressing member 104, The friction member 103 is pressed against the brake pad pivot 22A.  Referring to Figure 9, A method of assembling the drive-side friction mechanism 90 to the device body 30 will be described. Furthermore, Since the brake-side friction mechanism 100 The assembly method of 70 is the same as the assembly method of the driving-side friction mechanism 90 to the device body 30. Therefore, its description is omitted. Furthermore, In Figure 9, For convenience, The threaded portion 35A of the second storage portion 35 is schematically shown.  The drive-side friction mechanism 90 is assembled to the device body 30 by assembling the device body 30 and the second brake arm 50 (see FIG. 2) via the arm pivot 21B. The assembly method includes a friction member arrangement step, Installation steps for pressing members, And plug assembly steps.  As shown in FIG. 9A, In the friction member arrangement step, The friction member 93 is inserted into the sealing portion 35B of the second housing portion 35 of the apparatus body 30.  Secondly, As shown in Figure 9B, During the pressing member installation step, The three pressing members 94 are attached to the attachment portion 91C of the plug 91. at this time, The operator who performs the assembling operation of the drive-side friction mechanism 90 to the device body 30 confirms the number of the pressing members 94 attached to the plug 91. also, In a state where the three pressing members 94 are mounted on the mounting portion 91C, The mounting portion 91C protrudes from the three pressing members 94. With this, The pressing member 94 is prevented from falling off from the mounting portion 91C.  At last, As shown in Figure 9C, During the plug assembly step, The threaded portion 91A of the plug 91 on which the pressing member 94 is mounted is screwed into the threaded portion 35A of the second receiving portion 35. therefore, In the insertion direction shown by the hollow arrow in FIG. 9C, The plug 91 is inserted into the second accommodation portion 35. In the process of screwing the threaded portion 91A to the threaded portion 35A, Insert the front end portion of the mounting portion 91C of the plug 91 into the cylindrical portion 93A of the friction member 93, The pressing member 94 is in contact with the cylindrical portion 93A of the friction member 93. With this, The friction member 93 moves toward the arm pivot 21B together with the plug 91. And The friction member 93 is in contact with the arm pivot 21B to restrict movement to the arm pivot 21B. on the other hand, Since the plug 91 moves toward the arm pivot 21B, Therefore, the three pressing members 94 are compressed. And As shown in FIG. 9D, When the operator contacts the first step difference portion 91D of the plug 91 and the step difference portion 35C of the second accommodation portion 35, The screwing of the plug 91 into the second receiving portion 35 is completed. Furthermore, The method of assembling the plug 91 to the second receiving portion 35 is not limited to screwing in, Can be pressed in, then, Or welding. Anyway, If it is a process capable of assembling the plug 91 in the second receiving part 35, It can be a process other than screwing. also, The method of assembling the plug 101 to the receiving portion 63 is also not limited to screwing.  Secondly, The operation of the caliper device 20 will be described using FIG. 10. Furthermore, In the following description, Place each brake pad seat 60, 70 when each of the brake rotors 40 approaches the disc rotor 40, The shaking direction of 50 is set to "Shaking direction R1", Place each brake pad seat 60, 70 when the brake arm 40 is far away from the disc rotor 6, The shaking direction of 50 is set to "rocking direction R2". In the example shown, The driving mechanism 80 includes a movable-side structure that can be a piston rod, It may be a fixed-side structure of the cylinder. The brake arm 40 is connected to a movable-side structure of the driving mechanism 80, The brake arm 50 is connected to a fixed-side structure of the driving mechanism 80. The fixed-side structure (such as a cylinder) of the driving mechanism 80 has a larger mass than the movable-side structure (such as a piston rod). Inertial force is greater.  As shown in FIG. 10A, Driven by the drive mechanism 80, the first brake arm 40 is swung in the swing direction R1 about the pivot axis CD1 of the arm pivot 21A. And the driving mechanism 80 moves at the arrow Y1, Therefore, the second brake arm 50 is swung in the swing direction R1 about the pivot axis CD2 of the arm pivot 21B. With this, The distance between the front end portion of the input portion 44 and the front end portion of the input portion 54 (the distance between the fixed shaft 24A and the fixed shaft 24B) increases. With this, The first brake pad holder 60 and the second brake pad holder 70 approach the disc rotor 6 and place the brake pads 61, 71 is pressed against the dished rotor 6.  on the other hand, As shown in FIG. 10B, When the driving of the driving mechanism 80 is stopped, When the compressed air is discharged from the driving mechanism 80, With a return spring (not shown), The first brake arm 40 is swung around the pivot axis CD1 of the arm pivot 21A in the swing direction R2, In addition, the driving mechanism 80 returns to the position before driving the first braking arm 40. With this, The first brake shoe seat 60 is away from the disc rotor 6, Therefore, the brake pad 61 is far away from the disc rotor 6. on the other hand, The second brake arm 50 does not swing in the swing direction R2 because the drive-side friction mechanism 90 does not rotate around the pivot axis CD2 of the arm pivot 21B. therefore, The brake pad 71 of the second brake pad holder 70 is maintained in contact with the disc rotor 6.  also, During the travel of the railway vehicle 1 (see FIG. 1), Based on the vibration caused by the running of the railway vehicle 1, Wheel 4 and trolley 3 (both refer to FIG. 1) in the direction of the axle (direction of plate thickness of dish rotor 6), Up and down direction, And relative movement in the front-back direction. Especially when the wheels 4 and the trolley 3 move relative to each other in the axis direction, Each brake arm 40 supported by the device body 30 mounted on the trolley 3, 50 approaches and moves away from the disc rotor 6, Therefore, each brake block seat 60, 70 approaches and moves away from the disc rotor 6.  therefore, For example, as shown in FIG. 10C, When the disc rotor 6 moves in the arrow direction Y2 due to vibration caused by the traveling of the railway vehicle 1, The brake pad 71 of the second brake pad holder 70 is pushed to the disc rotor 6. And The second brake arm 50 swings about the pivot axis CD2 of the arm pivot 21B in the swing direction R2 by the force from the disc rotor 6 received by the second brake pad holder 70 via the brake pad 71.  also, The second brake arm 50 is restricted from swinging about the pivot axis CD2 of the arm pivot 21B by the drive-side friction mechanism 90. therefore, Even if vibration occurs due to the travel of the railway vehicle 1, The second brake arm 50 can also maintain the state shown in FIG. 10C.  And For example, as shown in FIG. 10D, When the disc rotor 6 moves in the arrow direction Y3 by the vibration caused by the traveling of the railway vehicle 1, and returns to the position of the disc rotor 6 of FIG. The brake pad 71 of the second brake pad holder 70 is separated from the disc rotor 6. on the other hand, The brake pad 61 of the first brake pad holder 60 approaches the disc rotor 6 but does not contact it. With this, Each brake pad 71, 61 is not in contact with the dish rotor 6.  According to this embodiment, The following effects can be obtained.  (1) The caliper device 20 minimizes or restricts the brake arm 40 by the friction increased by the friction mechanism 90, 50 shakes, When not braking, the brake pads 61, 71 remains in the non-braking position. E.g, Suppress the following situations: By the vibration caused by the vibration of the vehicle, Braking arm 40 when not braking, 50 shakes, Furthermore, the brake pads 61, 71 is in contact with the dish rotor 6 or the wheel 4. The caliper device 20 preferably includes a driving-side friction mechanism 90 and a braking-side friction mechanism 100. In addition to restricting the braking arms 40, 50 and each brake pad seat 60, Other than the relative movement of 70, The rocking force of the second brake arm 50 is restricted by the frictional force provided by the drive-side friction mechanism 90. With this, It is possible to suppress the second brake arm 50 from swinging around the pivot axis CD2 of the arm pivot 21B caused by the vibration of the railway vehicle 1. And each brake pad seat 60, 70 pivot 22A for brake pads, 22B pivot axis CB1, CB2 shakes. therefore, Suppression brake pads 61, 71 is repeatedly in contact with the disc rotor 6 due to the vibration of the traveling of the railway vehicle 1. therefore, Can reduce brake pads 61, 71 The frequency of contact with the dish rotor 6.  (2) The caliper device 20 is provided with a driving-side friction mechanism 90 on the second braking arm 50, The driving-side friction mechanism 90 is not provided on the first braking arm 40. With this, The driving-side friction mechanism 90 does not apply friction to each of the first braking arm 40 and the arm pivot 21A, Therefore, swinging of the first brake arm 40 is not restricted. With this, The driving-side friction mechanism 90 does not apply friction to the first braking arm 40, Therefore, the driving-side friction mechanism 90 is restrained from excessively restricting the arm pivots 21A, 21B is the center shake. therefore, For example, from each brake pad 61, 71 The state of contact with the disc rotor 6 is smoothly changed to each brake pad 61, 71 is a state far from the dish rotor 6.  (3) In the reference example in which the driving-side friction mechanism 90 is disposed closer to the output side than the arm pivot 21B, In order to avoid interference between the driving-side friction mechanism 90 and the disc rotor 6, The distance between the disc rotor 6 and the arm pivot 21B must be more than the space for arranging the driving-side friction mechanism 90. This leads to an increase in the size of the caliper device.  On this point, The driving-side friction mechanism 90 of the present embodiment is disposed on the input portion side of the second braking arm 50 rather than the arm pivot 21B. With this, The distance between the dish rotor 6 and the arm pivot 21B is suppressed from increasing. therefore, The size of the caliper device 20 can be suppressed.  (4) The friction mechanism described in Patent Document 1 is supported by a support shaft mounted on a pair of arms. therefore, Special parts are needed to support the friction mechanism regardless of the function of the caliper device, As a result, the number of related parts of the friction mechanism has increased.  On this point, The caliper device 20 of this embodiment supports the driving-side friction mechanism 90 via a second receiving portion 35 formed in the device body 30, With each brake pad seat 60, 70's support department 62, 72 supports the brake-side friction mechanism 100. therefore, No special parts are required to support the driving-side friction mechanism 90 and the braking-side friction mechanism 100, Therefore, the number of parts related to the suppression-side friction mechanism 90 and the brake-side friction mechanism 100 increases.  (5) The friction member 93 of the driving-side friction mechanism 90 is pressed against the arm pivot 21B. therefore, Compared with the reference example in which the friction member 93 is pressed against the device body 30 or the second brake arm 50, A special shape for pressing the friction member 93 may not be formed. therefore, The shape of the device body 30 or the second brake arm 50 can be prevented from being complicated.  (6) The friction member 93 is pressed against the arm pivot 21B by the pressing member 94. therefore, The frequency with which the friction member 93 moves away from the arm pivot 21B is reduced, It is possible to stably apply friction to the arm pivot 21B. Furthermore, The friction member 103 of the brake-side friction mechanism 100 is also pressed against the brake pad pivot 22A, by the pressing member 104. 22B, Therefore, the same effect as that of the driving-side friction mechanism 90 can be obtained.  (7) When foreign matter is interposed between the friction member 93 and the arm pivot 21B, The frictional force generated between the frictional member 93 becomes unstable.  On this point, Since the driving-side friction mechanism 90-based friction member 93 is disposed in a closed internal space in the first storage portion 34 and the second storage portion 35 of the device body 30, Therefore, foreign matter is suppressed from being interposed between the friction member 93 and the arm pivot 21B. therefore, The frictional force generated between the frictional member 93 and the frictional member 93 is stable. Furthermore, Since the friction member 103 of the brake-side friction mechanism 100 is also disposed on each of the brake pad seats 60, 70's support department 62, 72 and Containment Department 63, Closed interior space in 73, Therefore, the same effect as that of the driving-side friction mechanism 90 can be obtained.  (8) In the method of assembling the driving-side friction mechanism 90, After the three pressing members 94 are mounted on the mounting portion 91C of the plug 91, The plug 91 is screwed into the second receiving portion 35. therefore, The worker can easily confirm the number of the three pressing members 94. therefore, The drive-side friction mechanism 90 is assembled to the second accommodating portion 35 while the number of the pressing members 94 is suppressed from being erroneous. Furthermore, Since the brake-side friction mechanism 100 is also the same assembly method, Therefore, the same effect as that of the method of assembling the driving-side friction mechanism 90 can be obtained.  (9) When the first step difference portion 91D of the plug 91 is in contact with the step difference portion 35C of the second receiving portion 35, The position of the plug 91 with respect to the second accommodation portion 35 is determined. therefore, The operator does not need to adjust the position of the plug 91 relative to the second receiving portion 35, Therefore, the assembly efficiency of the driving-side friction mechanism 90 is improved. Furthermore, Since the relationship between the plug 101 of the braking-side friction mechanism 100 and the accommodation portion 63 is also the same as the relationship between the plug 91 of the driving-side friction mechanism 90 and the second accommodation portion 35, Therefore, the same effect can be obtained.  (10) The brake-side friction mechanism 100 with respect to the brake pad pivot 22A, 22B is arranged on each brake arm 40, 50 of the insertion part side. therefore, The brake-side friction mechanism 100 is opposed to the brake pad pivot 22A, Compared with the reference example in which 22B is disposed on the side opposite to the side of the insertion portion, It is easy to arrange each brake-side friction mechanism 100 inside the caliper device 20. therefore, The size of the caliper device 20 can be suppressed.  (11) The friction member 103 of the brake-side friction mechanism 100 is pressed against the brake pad pivot 22A, 22B. therefore, And pressing the friction member 103 against each brake pad seat 60, 70 or the reference example of the first brake arm 40, It is not necessary to form a special shape for pressing against the friction member 103, Therefore, each brake block seat 60, The shape of 70 or the first brake arm 40 is complicated.  (12) The first brake arm 40 swings around the arm pivot 21A by the drive mechanism 80. The second braking arm 50 swings around the arm pivot 21B as the driving mechanism 80 moves. The driving-side friction mechanism 90 is provided on the second brake arm 50. According to this constitution, Since the driving-side friction mechanism 90 is not provided in the first braking arm 40 that is easier to swing than the second braking arm 50, Therefore, the first brake arm 40 is smoothly swung. therefore, Smooth change of brake pads 61, 71 state of clamping the disc rotor 6 and brake pads 61, 71 is a state far from the dish rotor 6.  (13) The driving-side friction mechanism 90 is provided between the pair of arms 51. therefore, Compared with the reference example in which the driving-side friction mechanism 90 is provided on the outer side of the pair of arms 51, The size of the caliper device 20 can be suppressed.  (14) Installation steps of the pressing member according to the assembling method of the driving-side friction mechanism 90, In a state where the three pressing members 94 are mounted on the mounting portion 91C, The mounting portion 91C protrudes from the three pressing members 94. therefore, It is easy to support the three pressing members 94 to the mounting portion 91C, Therefore, in the plug assembly step, the operator does not need to hold the three pressing members 94 as one side. The operation of assembling the plug 91 to the second accommodating portion 35 on one side. therefore, The assembly efficiency of the driving-side friction mechanism 90 is improved. Furthermore, The structure and assembly method of the brake-side friction mechanism 100 are also the same as those of the drive-side friction mechanism 90. Therefore, the same effect as that of the driving-side friction mechanism 90 can be obtained.  (15) In a state where the driving-side friction mechanism 90 is assembled in the second housing portion 35, The mounting portion 91C is inserted into the cylindrical portion 93A of the friction member 93. therefore, The three pressing members 94 can be compressed by the plug 91 and the friction member 93. Furthermore, The configuration of the brake-side friction mechanism 100 is also the same as that of the drive-side friction mechanism 90. Therefore, the same effect as that of the driving-side friction mechanism 90 can be obtained.  (Modification) The description related to the above embodiment is an example of a form that the caliper device and the disc brake device provided with the device can adopt, It is not intended to limit its shape. In addition to the above-mentioned embodiment, the caliper device and the disc brake device provided with the same according to the present invention, For example, the following modified examples of the above embodiments can be adopted, And a combination of at least two variations that do not contradict each other.  (Modification 1) The driving-side friction mechanism 90 of the above embodiment is disposed on the input portion side with respect to the insertion portion 52 of the second brake arm 50, However, the arrangement position of the driving-side friction mechanism 90 is not limited to this. E.g, The driving-side friction mechanism 90 may be disposed on the second brake pad seat 70 (disc rotor 6) side with respect to the insertion portion 52, 31B side of the first arm, Or the side opposite to the 1st arm part 31B. also, The driving-side friction mechanism 90 is in the axial direction of the arm pivot 21B, It can be arranged outside the pair of arms 51.  (Modification 2) The driving-side friction mechanism 90 of the above embodiment is provided at the second arm portion 31C of the device body 30, However, a plurality of driving-side friction mechanisms 90 may be provided in the second arm portion 31C.  also, The brake-side friction mechanism 100 of the above embodiment is provided on each of the brake shoe holders 60, One of 70 pairs of support 62, One of 72, But not limited to this, Available in a pair of support sections 62, The other of 72, Or a pair of support sections 62, Both of 72, A brake-side friction mechanism 100 is provided. also, The brake-side friction mechanism 100 may be provided at the front end connecting portion 45, 55.  (Modification 3) The brake-side friction mechanism 100 according to the above embodiment is relative to the brake pad pivot 22A, 22B is arranged on each brake arm 40, 50 of the insertion part side, However, the arrangement position of the brake-side friction mechanism 100 is not limited to this. E.g, The brake-side friction mechanism 100 may be connected to the brake pad pivot 22A, 22B is arranged with each brake arm 40, 50 of the insertion part side opposite, Or with respect to the pivot 22A for brake pads, 22B is on the opposite side to the brake pad side. also, The brake-side friction mechanism 100 is mounted on a brake pad pivot 22A, 22B axis, Can be placed on a pair of arms 41, Between 51.  (Modification 4) The brake-side friction mechanism 100 of the above embodiment is mounted on each of the brake shoe holders 60, 1 set of 70, But it can be used in each brake pad seat 60, 70 is provided with a plurality of brake-side friction mechanisms 100.  (Modification 5) The pressing members 94, 104 is a disc spring, However, as long as the pressing friction member 93 can be provided, Power of 103, Other than disc springs. E.g, Pressing member 94, 104 can be other types of springs such as coil springs, It may be an elastic member such as an O-ring. also, As the pressing member 94, 104, Can be installed on plug 91, Mounting part 101C, 101C first permanent magnet, And mounted on friction member 93, 103. The second permanent magnet having the same magnetic pole as that of the first permanent magnet is the same as the second permanent magnet. In that case, The friction member 93 is pushed by the repulsive force generated between the first permanent magnet and the second permanent magnet. 103.  (Modification 6) In the embodiment, The magnitude of the friction force of the friction mechanism is always increased regardless of the position of the brake pads (ie, the braking position and the non-braking position). The driving-side friction mechanism 90 and the braking-side friction mechanism 100 of the above embodiment may replace the pressing members 94, 104, In order to press the friction member 93 by the actuator, Composition of 103. An example of an actuator is an electric motor, A ball screw mechanism composed of a ball screw that converts rotation of the output shaft of an electric motor into axial movement of the output shaft. The actuator is controlled by a controller, Dynamic control of friction members 93, 103 the amount of friction. E.g, Only in the non-braking position of the brake pads, Increase the friction of the friction mechanism and keep the brake pads in the non-braking position, And / or, When the brake pad is deviated from the non-braking position, the friction force is increased to keep or reset the brake pad in the non-braking position. With this dynamic control, Can reduce or prevent the brake pads from reaching the braking position when not braking, And / or the brake pads move towards the braking position when not braking. The actuator and / or controller of the modification 6 is an example of a fixed position adjustment mechanism that adjusts the fixed position of the friction member. Furthermore, Regarding the surface pressing against the friction surface of the friction mechanism, Can locally change the coefficient of friction, Or cut away a part to change the relative distance from the friction member, This can also increase or decrease friction.  (Modification 7) The driving-side friction mechanism 90 of the above embodiment is a second arm portion 31C assembled to the device body 30, And a structure that imparts friction to the arm pivot 21B, However, the relationship between the portion where the drive-side friction mechanism 90 is assembled and the member that imparts frictional force to the drive-side friction mechanism 90 is not limited to this. E.g, The relationship shown in the following (A) to (E) can be obtained. And The relationships shown in (A) to (E) can be combined with each other.  (A) As shown in Figure 11, The driving-side friction mechanism 90 as the first driving-side friction mechanism may replace the second housing portion 35 (see FIG. 6) of the second arm portion 31C of the device body 30, The end of the first receiving portion 34 in the axial direction of the arm pivot 21B, The third accommodating portion 36 is assembled in parallel to the longitudinal direction of the first accommodating portion 34. The shape of the internal space of the third storage portion 36 is the same as that of the internal space of the second storage portion 35 (see FIG. 6). In that case, The friction member 93 of the driving-side friction mechanism 90 is pressed against the input portion 54 of the second brake arm 50.  Furthermore, The driving-side friction mechanism 90 may be disposed on the side opposite to the input portion side (the dish rotor 6 side (see FIG. 3)) with respect to the arm pivot 21B. In that case, The friction member 93 of the driving-side friction mechanism 90 is pressed against the output portion 53 of the second brake arm 50 (see FIG. 3). The friction force generated by the sliding contact of the friction surface of the friction member 93 with a part of the brake arm 50 (for example, the input portion 54 or the output portion 53) is referred to as an arm restraint friction force.  (B) As shown in Figure 12, The driving-side friction mechanism 90 as the second driving-side friction mechanism is assembled in the accommodation portion 110 formed at the axial end portion of the arm pivot 21B. The shape of the internal space of the storage portion 110 is the same as the shape of the internal space of the second storage portion 35 (see FIG. 6). Parts of the arm pivot 21B on both sides of the receiving portion 110 in the axial direction, A sealing member 111 is attached. The sealing member 111 is, for example, an O-ring. With this, The internal space of the accommodating portion 110 is hermetically closed. also, The arm pivot 21B is rotatably attached to the second arm portion 31C (see FIG. 6), The second brake arm 50 is rotatably attached to the insertion portion 52 of the second brake arm 50. also, The friction member 93 is pressed against the insertion portion 52 of the second brake arm 50.  (C) As shown in FIG. 13A, The driving-side friction mechanism 90 as the second driving-side friction mechanism is assembled in an accommodation portion 56 formed in the insertion portion 52 of the second braking arm 50. The accommodating portion 56 is disposed further outside the caliper device 20 than the arm pivot 21B. As shown in Figure 13B, For arm pivot 21B, A sealing member 111 is attached. The seal member 111 is disposed on both sides of the friction member 93 in the arm pivot 21B. The shape of the internal space of the accommodating portion 56 is the same shape as the internal space of the second accommodating portion 35 (see FIG. 6). The arm pivot 21B is rotatably attached to the second arm portion 31C (see FIG. 6), The second brake arm 50 is rotatably attached to the insertion portion 52 of the second brake arm 50. also, The friction member 93 is pressed against the arm pivot 21B.  (D) As shown in Figure 14, The driving-side friction mechanism 90 as the third driving-side friction mechanism is assembled in a receiving portion 57 formed in the input portion 54 of the second braking arm 50. The accommodation portion 57 is formed so as to penetrate the input portion 54 in a direction along the axial direction of the arm pivot 21B. The shape of the internal space of the accommodating part 57 is the same shape as the internal space of the second accommodating part 35 (refer FIG. 6). also, In the second arm portion 31C of the device body 30, An opposing portion 37 extending toward the receiving portion 57 is formed. The facing portion 37 is in contact with the receiving portion 57. And The friction member 93 is pressed against the facing portion 37 of the second arm portion 31C. Furthermore, The accommodating part 57 may be formed in the output part 53 (refer FIG. 2). In that case, The facing portion 37 of the device body 30 extends toward the output portion 53 and contacts the receiving portion 57.  (E) As shown in FIG. 15, The driving-side friction mechanism 90 as the third driving-side friction mechanism is assembled in a receiving portion 112 formed in an intermediate portion in the axial direction of the arm pivot 21B (the central portion in the axial direction of the arm pivot 21B in FIG. 15). . The shape of the internal space of the accommodating part 112 is the same shape as the internal space of the accommodating part 110 (refer FIG. 12). also, The friction member 93 is pressed against the second arm portion 31C of the apparatus body 30. The arm pivot 21B is rotatable relative to the second arm portion 31C of the device body 30, Do not rotate with respect to the second brake arm 50.  (Modification 8) The brake-side friction mechanism 100 of the above-mentioned embodiment is assembled to each brake pad seat 60, 70, And for the brake pad pivot 22A, 22B Friction composition, However, the relationship between the portion where the brake-side friction mechanism 100 is assembled and the frictional force imparting member of the brake-side friction mechanism 100 is not limited to this. E.g, The relationship shown in the following (A) to (E) can be obtained. And The relationships shown in (A) to (E) can be combined with each other.  Furthermore, In the following description, Since the brake-side friction mechanism 100 provided on the first brake pad seat 60, The structure is the same as that of the brake-side friction mechanism 100 provided on the second brake pad seat 70. Therefore, the brake-side friction mechanism 100 provided in the first brake pad seat 60 will be described. The description of the brake-side friction mechanism 100 provided in the second brake shoe 70 is omitted. also, In the diagrams used in the description below, For convenience, In some cases, a part of the brake shoe holder 60 is omitted.  (A) As shown in Figure 16, The brake-side friction mechanism 100 as a first brake-side friction mechanism is assembled in a receiving portion 120 formed at an axial end portion of the brake pad pivot 22A. The shape of the internal space of the accommodating part 120 is the same shape as the internal space of the accommodating part 63 (refer FIG. 8). In that case, The friction member 103 of the brake-side friction mechanism 100 is pressed against the support portion 62 of the first brake pad holder 60.  (B) As shown in Figure 17, The brake-side friction mechanism 100 as the second brake-side friction mechanism is assembled in a receiving portion 64 extending in the axial direction of the brake pad pivot 22A in the support portion 62 of the first brake pad holder 60. The accommodation portion 64 is in contact with the output portion 43 of the first brake arm 40. The accommodation portion 64 is formed in a direction along the axial direction of the brake pad pivot axis 22A, The shape is the same as that of the accommodating portion 63 (see FIG. 8). In that case, The friction member 103 of the brake-side friction mechanism 100 is pressed against the output portion 43 of the first brake arm 40.  (C) As shown in FIG. 18, The brake-side friction mechanism 100 as a second brake-side friction mechanism is assembled in a receiving portion 48 formed in the output portion 43 of the first brake arm 40. The receiving portion 48 penetrates the output portion 43 in a direction along the axial direction of the brake pad pivot axis 22A, The shape is the same as that of the receiving portion 63 (see FIG. 8). also, The support portion 62 is formed with an opposing portion 65 extending toward the output portion 43. The facing portion 65 is in contact with the output portion 43. In that case, The friction member 103 of the brake-side friction mechanism 100 is pressed against the facing portion 65.  (D) As shown in FIG. 19, The brake-side friction mechanism 100 as a third brake-side friction mechanism is assembled in a receiving portion 49 formed in the output portion 43 of the first brake arm 40. The shape of the internal space of the accommodating part 49 is the same shape as the internal space of the accommodating part 63 (refer FIG. 8). In that case, The brake pad pivot 22A is non-rotatably attached to the support portion 62, It is rotatably attached to the output part 43. In that case, The friction member 103 of the brake-side friction mechanism 100 is pressed against the brake pad pivot 22A.  (E) As shown in FIG. 20, The brake-side friction mechanism 100 as a third brake-side friction mechanism is incorporated in a receiving portion 121 formed in a portion facing the output portion 43 in the brake pad pivot 22A. The shape of the storage portion 121 is the same as that of the storage portion 120 (see FIG. 16). In that case, The brake pad pivot 22A is non-rotatably attached to the support portion 62, It is rotatably attached to the output part 43. also, The friction member 103 is pressed against the output portion 43. Furthermore, The accommodating portion 121 may be formed in the brake pad pivot 22A at a portion facing the front end connecting portion 45 of the first brake arm 40. In that case, The friction member 103 is pressed against the front end connection portion 45.  (Modification 9) The configuration of the drive-side friction mechanism 90 and the brake-side friction mechanism 100 in the above embodiment may be replaced, The friction mechanism described in Patent Document 1 is provided on the second arm portion 31C of the device body 30 and each of the brake shoe holders 60, 70. In that case, In the input part 54 of the second brake arm 50, A driving-side support shaft for supporting the friction mechanism is provided so as to be parallel to the arm pivot shaft 21B and to connect a pair of arms 51 to each other. also, For each brake arm 40, 50's output section 43, 53, The brake-side support shaft to support the friction mechanism is connected to the brake pad pivot 22A, 22B A pair of parallel arms 41, 51 way settings.  (Modification 10) In the driving-side friction mechanism 90 and the braking-side friction mechanism 100 of the above embodiment, Can omit the pressing member 94, 104. In that case, Plug 91, 101 and friction members 93, 103 touch each other.  (Modification 11) The driving-side friction mechanism 90 of the above-described embodiment and Modifications 1 to 7 and Modification 9 may be provided on the first brake arm 40 instead of the second brake arm 50.  (Modification 12) The brake-side friction mechanism 100 may be omitted.  (Modification 13) The braking arm 40 generates a braking force by pressing a brake pad 61 for braking the rotation of the rotating body against the rotating body. The rotating body may be a dish rotor 6, It may also be the wheel 4. The same applies to the brake arm 50.  of course, Those skilled in the art should understand that without departing from the scope of the present invention, The invention can be implemented in many other specific forms. E.g, Some components may be omitted from the components described in this embodiment (or one or more). In addition, The members of each embodiment can be appropriately combined. The scope of the invention and its equivalent invention should be understood with reference to the scope of the accompanying patent application.

1‧‧‧ Railway vehicles

2‧‧‧ body

3‧‧‧ trolley

4‧‧‧ Wheel

5‧‧‧ axle

6‧‧‧Disc rotor

10‧‧‧disc brake

11‧‧‧Air supply and discharge section

20‧‧‧ Caliper device

21A‧‧‧arm pivot

21B‧‧‧ Pivot for Arm

22A‧‧‧ Pivot for brake pads

22B‧‧‧ Pivot for brake pads

23A‧‧‧Bolt

23B‧‧‧Bolt

24A‧‧‧Fixed shaft

24B‧‧‧Fixed shaft

25‧‧‧ a pair of sealing members

26‧‧‧A pair of sealing members

27A‧‧‧Key components

27B‧‧‧Key components

28A‧‧‧washer

28B‧‧‧washer

29A‧‧‧Bolt

29B‧‧‧Bolt

30‧‧‧device body

31‧‧‧arm support

31A‧‧‧ bottom

31B‧‧‧1st arm (shaft support)

31C‧‧‧Second arm (shaft support)

32‧‧‧Mounting Department

34‧‧‧ 1st Containment Section (Containment Section)

35‧‧‧Second Containment Section (Containment Section)

35A‧‧‧Thread

35B‧‧‧Sealing Department

35C‧‧‧Step

36‧‧‧ 3rd Containment Section (Containment Section)

37‧‧‧ facing part

40‧‧‧The first brake arm

41‧‧‧arm

42‧‧‧ Insertion

43‧‧‧Output Department

44‧‧‧ Input Department

45‧‧‧Front Link

49‧‧‧ Containment Department

50‧‧‧Second brake arm

51‧‧‧arm

52‧‧‧ Insertion

53‧‧‧Output Department

54‧‧‧Input Department

55‧‧‧Front Link

56‧‧‧ Containment Department

57‧‧‧ Containment Department

60‧‧‧The first brake pad seat

61‧‧‧brake pads

62‧‧‧ pair of support department

63‧‧‧ Containment Department

63A‧‧‧Thread

63B‧‧‧Sealing Department

63C‧‧‧Step

64‧‧‧ Containment Department

65‧‧‧ facing part

70‧‧‧Second brake pad seat

71‧‧‧brake pad

72‧‧‧ a pair of support department

73‧‧‧ Containment Department

80‧‧‧Drive mechanism

90‧‧‧ Friction mechanism (driving side friction mechanism)

91‧‧‧plug

91A‧‧‧Thread

91B‧‧‧Sealing Department

91C‧‧‧Mounting Department

91D‧‧‧First step difference

91E‧‧‧ 2nd step difference

92‧‧‧sealing member

93‧‧‧Friction member

93A‧‧‧Cylinder

94‧‧‧ Pressing member

100‧‧‧brake side friction mechanism

101‧‧‧plug

101A‧‧‧Thread

101B‧‧‧Sealing Department

101C‧‧‧Mounting Department

101D‧‧‧First step difference

102‧‧‧sealing member

103‧‧‧Friction member

104‧‧‧Pressing against components

110‧‧‧ Containment Department

111‧‧‧sealing member

112‧‧‧ Containment Department

120‧‧‧ Containment Department

121‧‧‧ Containment Department

CB1‧‧‧ Pivot

CB2‧‧‧ Pivot

CD1‧‧‧ Pivot

CD2‧‧‧ Pivot

R1‧‧‧Shake direction

R2‧‧‧Shake direction

Y1‧‧‧arrow

Y2‧‧‧arrow direction

Y3‧‧‧arrow direction

FIG. 1 is a schematic cross-sectional view of a railway vehicle provided with a disc brake device according to an embodiment as viewed from the axle direction. FIG. 2 is an exploded perspective view of a caliper device of a disc brake device. Figure 3 is a top view of the caliper device. FIG. 4A is a side view of the caliper device, and FIG. 4B is a side view of the caliper device on the opposite side to FIG. 4A. Fig. 5 is an exploded perspective view of the driving-side friction mechanism of the caliper device and its surroundings. Fig. 6 is a sectional view of the driving-side friction mechanism and its surroundings. FIG. 7 is an exploded perspective view of the brake-side friction mechanism on the first brake arm side of the caliper device and its periphery. Fig. 8 is a sectional view of the brake-side friction mechanism and its surroundings. 9A to 9D are schematic cross-sectional views of the driving-side friction mechanism and its surroundings, showing the assembly status of each step of the method of assembling the driving-side friction mechanism. 10A to 10D are plan views for explaining the function of the caliper device. FIG. 11 is a cross-sectional view of the driving-side friction mechanism and its periphery in the caliper device of Modification 7 (A). FIG. 12 is a cross-sectional view of a driving-side friction mechanism and its periphery in a caliper device according to Modification 7 (B). FIG. 13A is a plan view of the insertion portion of the second brake arm of the caliper device and its surroundings, and FIG. 13B is a cross-sectional view taken along line 13B-13B of FIG. FIG. 14 is a cross-sectional view of a driving-side friction mechanism and its periphery in a caliper device according to Modification 7 (D). FIG. 15 is a cross-sectional view of the driving-side friction mechanism and its periphery in the caliper device of Modification 7 (E). FIG. 16 is a cross-sectional view of the brake-side friction mechanism and its surroundings in the caliper device of Modification 8 (A). FIG. 17 is a cross-sectional view of the brake-side friction mechanism and its surroundings in the caliper device of Modification 8 (B). FIG. 18 is a cross-sectional view of the brake-side friction mechanism and its surroundings in the caliper device of Modification 8C). FIG. 19 is a cross-sectional view of the brake-side friction mechanism and its surroundings in the caliper device of Modification 8 (D). FIG. 20 is a cross-sectional view of a brake-side friction mechanism and its periphery in a caliper device according to Modification 8 (E).

Claims (27)

A caliper device, which is used by a user with a brake block for braking the rotation of a rotating body, and includes: a brake arm that moves the brake block to a braking position and non-braking by a driving mechanism swinging relative to the device body Position; and a friction mechanism that increases the friction corresponding to the rocking of the braking arm with respect to the device body when it is not braking. According to the caliper device of claim 1, wherein the friction mechanism includes a friction member, the friction member generates an arm restraining friction force that prevents the braking arm from swinging relative to the device body. For example, the caliper device of claim 2, wherein the friction mechanism is configured in such a manner that the frictional force for arm restraint can be adjusted in a stepless or stepwise manner. For example, the caliper device of claim 2 further includes a fixed position adjusting mechanism for adjusting the fixed position of the friction member in order to adjust the frictional force for the arm restraint. For example, the caliper device of claim 2 further includes an arm pivot, the arm pivot connecting the braking arm and the device body in a swingable manner, and a friction member of the friction mechanism by pivoting the arm. One of the shaft, the device body, and the braking arm is in sliding contact to generate the arm restraint. Friction. For example, the caliper device of claim 2, wherein the brake pad is used to clamp one of the first and second brake pads of the rotating body, and the brake arm is the first one connected to the first and second brake pads. In the case of one of the second braking arms, the friction mechanism only increases the friction corresponding to the vibration of the one braking arm with respect to the device body. For example, the caliper device of claim 6 further includes the driving mechanism, which is supported by the device body, and includes a fixed-side structure and a movable-side structure, and the braking arm of the one is connected to the driving mechanism. In the fixed-side structure, the other brake arm is connected to the movable-side structure of the driving mechanism. The caliper device according to claim 1, wherein the braking arm includes: an insertion portion for inserting an arm supported by the device body with a pivot; an input portion extending from the insertion portion; and an output portion between The input section extends in a different direction from the insertion section; and the driving mechanism is connected to the input section so as to apply a driving force to the input section, and the output section is connected via a pivot for a brake pad having a pivot axis. The friction mechanism is connected to a brake pad seat for mounting the brake pad, and the friction mechanism is a driving side that applies friction to at least one of the input portion, the insertion portion, the output portion, the device body, and the arm pivot. The friction mechanism, the caliper device further includes a brake-side friction mechanism, the brake-side friction mechanism is different from the drive-side friction mechanism, and the output portion, the brake pad pivot, And at least one of the aforementioned brake pad seats imparts frictional force. The caliper device according to claim 5, wherein the friction mechanism is disposed on the input side with respect to the arm pivot. The caliper device according to claim 5, wherein the friction member is mounted on the device body and includes a friction surface pressed against one of the brake arm and the arm pivot. The caliper device of claim 5, wherein the friction member is mounted on one of the brake arm and the arm pivot, and includes friction that is pressed against the other of the brake arm and the arm pivot. surface. The caliper device according to claim 5, wherein the friction member is mounted on one of the brake arm and the arm pivot, and includes a friction surface pressed against the device body. The caliper device according to claim 5, wherein the friction member includes a friction surface pressed against the arm pivot. The caliper device according to claim 13, wherein the friction mechanism further includes a pressing member that presses the friction member toward the arm pivot. The caliper device according to claim 14, wherein the friction member and the pressing member are accommodated and supported in a receiving portion formed in the device body or the brake arm, and The friction mechanism further includes a plug that closes the receiving portion. The caliper device according to claim 15, wherein the plug includes a mounting portion for mounting the pressing member. The caliper device according to claim 16, wherein the receiving portion includes a stepped portion in contact with the plug in an insertion direction of the plug. The caliper device according to claim 8, wherein the brake-side friction mechanism is disposed on the insertion portion side with respect to the brake pad pivot. The caliper device of claim 8 or 18, wherein the brake-side friction mechanism is mounted on one of the brake pad holder and the brake pad pivot, and is provided with the brake pad holder and the brake pad pivot The other friction member. The caliper device of claim 8 or 18, wherein the brake-side friction mechanism is mounted on one of the brake pad seat and the output section, and has friction that is pressed against the other of the brake pad seat and the output section. member. The caliper device of claim 8 or 18, wherein the brake-side friction mechanism is mounted on one of the output section and the brake pad pivot, and is provided with another one that is pressed against the output section and the brake pad pivot. One friction member. The caliper device according to claim 8 or 18, wherein the brake-side friction mechanism includes a friction member that is pressed against the pivot for the brake pad. The caliper device according to claim 22, wherein the brake-side friction mechanism further includes a pressing member that presses the friction member of the brake-side friction mechanism toward the brake pad with a pivot. The caliper device according to claim 22, wherein the friction member of the brake-side friction mechanism is accommodated and supported in a storage portion formed in the brake pad seat or the brake arm, and the brake-side friction mechanism further includes a closed storage portion. The plug. The caliper device according to claim 24, wherein the brake-side friction mechanism further includes a pressing member that presses the friction member of the brake-side friction mechanism toward the brake pad with a pivot, and the brake-side friction mechanism The plug includes a mounting portion for mounting the pressing member of the braking-side friction mechanism. The caliper device according to claim 24, wherein the receiving portion of the brake-side friction mechanism includes a stepped portion in contact with the plug in an insertion direction of the plug of the brake-side friction mechanism. A disc brake device includes the caliper device according to any one of claims 1 to 26, and the caliper device is configured to apply a braking force to a rotating body by a fluid supply from a fluid system.