Drive device

Abstract

The present invention provides a driving device that can simplify the structure of the driving device. The driving device (10) includes a base member (12), a first slave piston (32), a first driving piston (34) and a first driving transmission medium (38). The base member (12) has a first slave cylinder bore (40) and a first driving cylinder bore (42) extending from the first slave cylinder bore (40). The first slave piston (32) is configured to be movable in the first slave cylinder bore (40). The first driving piston (34) can move forward and backward relative to the first slave cylinder bore (40) and is configured to be movable in the first driving cylinder bore (42). The first chamber (36) is defined by the first slave cylinder bore (40), the first slave piston (32) and the first driving piston (34). The first driving transmission medium (38) is arranged in the first chamber (36) so as to transmit the movement of the first driving piston (34) to the first slave piston (32).

Description

Technical Field

[0001] The technology disclosed in this application relates to a drive device. Background Art

[0002] Patent Document 1 discloses a device for driving a brake.

[0003] Prior Art Literature

[0004] Patent Literature

[0005] Patent document 1: European patent application publication EP2444309A1 Summary of the invention

[0006] An object of the technology disclosed in the present application is, for example, to simply configure a driving device.

[0007] According to the first aspect of the present invention, the drive device comprises a base member, a first slave piston, a first driving piston, a first chamber and a first driving transmission medium. The base member has a first slave cylinder bore and a first driving cylinder bore extending from the first slave cylinder bore. The first slave piston is configured to be movable in the first slave cylinder bore. The first driving piston can move forward and backward relative to the first slave cylinder bore and is configured to be movable in the first driving cylinder bore. The first chamber is defined by the first slave cylinder bore, the first slave piston and the first driving piston. The first driving transmission medium is arranged in the first chamber so as to transmit the movement of the first driving piston to the first slave piston.

[0008] In the drive device of the first aspect, since the first drive piston can move forward and backward relative to the first slave cylinder bore, the drive device can be simply configured and the movement of the first drive piston can be transmitted to the first slave piston via the first drive transmission medium.

[0009] According to a second aspect of the present invention, based on the driving device of the first aspect, the first driving transmission medium includes a solid member.

[0010] In the driving device of the second aspect, the driving device can be configured more simply.

[0011] According to the third aspect of the present invention, the drive device comprises a base member, a first slave piston, a first drive piston, a first chamber and a first drive transmission medium. The base member has a first slave cylinder bore and a first drive cylinder bore extending from the first slave cylinder bore. The first slave piston is configured to be movable in the first slave cylinder bore. The first drive piston is configured to be movable in the first drive cylinder bore. The first chamber is defined by the first slave cylinder bore, the first slave piston and the first drive piston. The first drive transmission medium is arranged in the first chamber so as to transmit the movement of the first drive piston to the first slave piston. The first drive transmission medium includes a solid member.

[0012] In the driving device of the third aspect, since the first drive transmission medium includes a solid member, the driving device can be simply configured and the movement of the first driving piston can be transmitted to the first driven piston via the first drive transmission medium.

[0013] According to a fourth aspect of the present invention, based on the driving device of the second or third aspect, the solid member includes a plurality of spheres.

[0014] In the driving device of the fourth aspect, the first driving transmission medium can efficiently transmit the movement of the first driving piston to the first driven piston.

[0015] According to a fifth aspect of the present invention, based on the driving device of the fourth aspect, the plurality of balls include metal material.

[0016] In the driving device of the fifth aspect, the first driving transmission medium can further efficiently transmit the movement of the first driving piston to the first driven piston.

[0017] According to a sixth aspect of the present invention, in the driving device of the fourth or fifth aspect, the outer diameter of each of the plurality of balls is within a range of 0.1 mm to 3 mm.

[0018] In the driving device of the sixth aspect, the first driving transmission medium can further efficiently transmit the movement of the first driving piston to the first driven piston.

[0019] According to a seventh aspect of the present invention, in the driving device of any one of the first to sixth aspects, the first driving piston is movable relative to the base member in a first driving direction, and the first driven piston is movable relative to the base member in a first driven direction different from the first driving direction.

[0020] In the drive device according to the seventh aspect, since the first driven direction is different from the first driving direction, the degree of freedom in arrangement of the first drive piston and the first driven piston can be increased.

[0021] According to an eighth aspect of the present invention, in the driving device of the seventh aspect, the first driven direction is orthogonal to the first driving direction.

[0022] In the drive device according to the eighth aspect, the first drive piston and the first driven piston can be efficiently arranged.

[0023] According to a ninth aspect of the present invention, in the driving device of any one of the first to eighth aspects, the first driving piston includes a first cable connecting portion configured to be connected to a cable of the mechanical cable.

[0024] In the driving device of the ninth aspect, the first driving piston can be operated by a mechanical cable.

[0025] According to a tenth aspect of the present invention, in the driving device of the ninth aspect, the first driving piston has a first cable guide hole extending from the first cable connecting portion to guide a cable of the mechanical cable.

[0026] In the driving device according to the tenth aspect, the cable of the mechanical cable can be arranged in the first cable guide hole of the first driving piston, and the cable can be arranged efficiently.

[0027] According to the eleventh aspect of the present invention, based on the driving device of any one of the first to tenth aspects, the first driving piston can move from a first initial position to a first driving position relative to the base member. The first driving piston has a first piston body, and the first piston body moves the first driving transmission medium according to the movement of the first driving piston from the first initial position to the first driving position.

[0028] In the driving device according to the eleventh aspect, the first piston body moves the first drive transmission medium, so that the movement of the first driving piston can be efficiently transmitted to the first driven piston via the first drive transmission medium.

[0029] According to a twelfth aspect of the present invention, in the driving device of the eleventh aspect, when the first driving piston is arranged in the first driving position, the first piston body is at least partially arranged in the first slave cylinder bore.

[0030] In the driving device according to the twelfth aspect, by using the first piston body to move the first drive transmission medium, the movement of the first driving piston can be more efficiently transmitted to the first driven piston via the first drive transmission medium.

[0031] According to a thirteenth aspect of the present invention, in the driving device of the eleventh or twelfth aspect, when the first driving piston is arranged in the first initial position, the first piston body is at least partially arranged outside the first slave cylinder bore.

[0032] In the drive device according to the thirteenth aspect, the first piston body can be at least partially retracted from the first slave cylinder bore.

[0033] According to a fourteenth aspect of the present invention, in the driving device of any one of the eleventh to thirteenth aspects, the first driving piston includes a first guide portion extending from the first piston body. The maximum outer diameter of the first piston body is larger than the maximum outer diameter of the first guide portion.

[0034] In the driving device according to the fourteenth aspect, the movement of the first driving piston can be transmitted to the first driving transmission medium by the first piston body.

[0035] According to a fifteenth aspect of the present invention, in the driving device according to any one of the eleventh to fourteenth aspects, the first piston body has a first tapered surface.

[0036] In the driving device according to the fifteenth aspect, the movement of the first driving piston can be smoothly transmitted to the first driving transmission medium by utilizing the first tapered surface.

[0037] According to a sixteenth aspect of the present invention, in addition to the driving device of any one of the eleventh to fifteenth aspects, the driving device further includes a first urging member that urges the first driving piston toward the first initial position.

[0038] In the drive device of the sixteenth aspect, when the operating force on the first drive piston is released, the first drive piston is returned from the first drive position to the first initial position by the first biasing member. Thus, the first drive piston can be held near the first initial position without operating the drive device.

[0039] According to the seventeenth aspect of the present invention, on the basis of the driving device of any one of the first to sixteenth aspects, the base member has a second slave cylinder bore and a second drive cylinder bore extending from the second slave cylinder bore. The driving device also has a second slave piston, a second drive piston, a second chamber and a second drive transmission medium. The second slave piston is configured to be movable in the second slave cylinder bore. The second drive piston can move forward and backward relative to the second slave cylinder bore and is configured to be movable in the second drive cylinder bore. The second chamber is defined by the second slave cylinder bore, the second slave piston and the second drive piston. The second drive transmission medium is arranged in the second chamber so as to transmit the movement of the second drive piston to the second slave piston.

[0040] In the drive device of the seventeenth aspect, since the second drive piston can move forward and backward relative to the second slave cylinder bore, the drive device can be simply configured and the movement of the second drive piston can be transmitted to the second slave piston via the second drive transmission medium.

[0041] According to an eighteenth aspect of the present invention, based on the driving device of the seventeenth aspect, the first driving piston can move from a first initial position to a first driving position along a first driving direction relative to the base member, and the second driving piston can move from a second initial position to a second driving position along a second driving direction different from the first driving direction relative to the base member.

[0042] In the drive device according to the eighteenth aspect, the first drive piston and the second drive piston can be efficiently arranged.

[0043] According to a nineteenth aspect of the present invention, in the driving device of the eighteenth aspect, the second driving direction is a direction opposite to the first driving direction.

[0044] In the drive device according to the nineteenth aspect, the operating force of one of the first drive piston and the second drive piston can be easily utilized for the other.

[0045] According to the twentieth aspect of the present invention, based on the driving device of the eighteenth or nineteenth aspect, the base member has a first base and a second base, the second base is connected to the first base and is a member different from the first base. The first base has a first slave cylinder bore and a first driving cylinder bore. The second base has a second slave cylinder bore and a second driving cylinder bore. The first base and the second base have shapes that are at least partially point-symmetrical with each other about a reference point arranged between the first slave piston and the second slave piston.

[0046] In the driving device according to the twentieth aspect, components can be easily made common.

[0047] According to the twenty-first aspect of the present invention, in the driving device of the twentieth aspect, the first slave cylinder bore and the second slave cylinder bore have mutually point-symmetric shapes about the reference point. The first drive cylinder bore and the second drive cylinder bore have mutually point-symmetric shapes about the reference point.

[0048] In the driving device according to the twenty-first aspect, components can be made common more easily.

[0049] According to the twenty-second aspect of the present invention, based on the driving device of the twenty or twenty-first aspect, the first driving piston has a first piston body, and the first piston body presses the first driving transmission medium according to the movement of the first driving piston. The second driving piston has a second piston body, and the second piston body presses the second driving transmission medium according to the movement of the second driving piston. The first base and the second base have mutually point-symmetrical shapes about a reference point within the range from the first piston body to the second piston body.

[0050] In the driving device according to the twenty-second aspect, components can be made common even more easily.

[0051] According to a twenty-third aspect of the present invention, in the driving device of any one of the twentieth to twenty-second aspects, the first driving piston and the second driving piston are arranged point-symmetrically with respect to the reference point.

[0052] In the driving device according to the twenty-third aspect, components can be made common even more easily.

[0053] According to a twenty-fourth aspect of the present invention, in addition to the driving device of any one of the first to twenty-third aspects, the driving device further includes a cable guide attached to the base member to guide a cable of the mechanical cable.

[0054] In the driving device according to the twenty-fourth aspect, driving by the cable can be smoothly performed.

[0055] According to a twenty-fifth aspect of the present invention, in the driving device of the twenty-fourth aspect, the cable guide includes a guide pipe having an inner peripheral surface and a sliding member provided on the inner peripheral surface of the guide pipe.

[0056] In the driving device according to the twenty-fifth aspect, driving by the cable can be performed more smoothly.

[0057] According to the twenty-sixth aspect of the present invention, the drive device comprises a base member, a first slave piston, a second slave piston, an adapter and a connecting member. The base member comprises a first substrate having a first slave cylinder bore and a second substrate having a second slave cylinder bore, wherein the second substrate is a member different from the first substrate. The first slave piston is configured to be movable in the first slave cylinder bore. The second slave piston is configured to be movable in the second slave cylinder bore. The adapter is a member different from the first substrate and the second substrate, and is configured to be fixed to the frame. The connecting member is a member different from the first substrate, the second substrate and the adapter, and is configured to connect the first substrate, the second substrate and the adapter to each other.

[0058] In the driving device according to the twenty-sixth aspect, since the first base, the second base, and the adapter can be connected by the connecting member, the connecting structure of the first base, the second base, and the adapter can be simplified.

[0059] According to the twenty-seventh aspect of the present invention, based on the driving device of the twenty-sixth aspect, the first substrate has a first through hole, the second substrate has a second through hole, and the connecting member extends through the first through hole and the second through hole.

[0060] In the driving device according to the twenty-seventh aspect, at least a part of the connecting member can be arranged inside the first base and the second base, and the driving device can be configured to be compact.

[0061] According to the twenty-eighth aspect of the present invention, in the driving device of the twenty-sixth aspect, the connecting member comprises a rod extending through the first through hole and the second through hole and an external thread portion provided at a first end portion of the rod, and the adapter comprises a connecting thread hole screwed into the external thread portion.

[0062] In the driving device according to the twenty-eighth aspect, the connection strength among the first base, the second base, and the adapter can be improved.

[0063] According to the twenty-ninth aspect of the present invention, in the driving device of the twenty-eighth aspect, the first base has a first recessed portion provided at the end of the first through hole, and the connecting member has a head provided at the second end of the rod, and the head is disposed in the first recessed portion.

[0064] In the driving device according to the twenty-ninth aspect, the driving device can be configured to be compact.

[0065] According to the 30th aspect of the present invention, in the driving device of the 29th aspect, the second base has a second recessed portion provided at an end of the second through hole. The adapter has an adapter body and a protrusion protruding from the adapter body and disposed in the second recessed portion.

[0066] In the driving device according to the 30th aspect, the adapter can be easily positioned on the base member.

[0067] According to the thirty-first aspect of the present invention, in the driving device of the thirtieth aspect, the connecting threaded hole extends from the adapter body to the protrusion.

[0068] In the driving device according to the thirty-first aspect, the length of the connecting screw hole can be easily ensured.

[0069] According to a thirty-second aspect of the present invention, in the driving device of any one of the twenty-sixth to thirty-first aspects, the adapter includes a fixing hole in which a fixing member is disposed, and the fixing member is configured to fix the adapter to the frame.

[0070] In the driving device according to the thirty-second aspect, the adapter can be fixed to the frame by using the fixing member.

[0071] According to the thirty-third aspect of the present invention, in the driving device of any one of the twenty-sixth to thirty-second aspects, the adapter has a mounting surface facing the frame when the adapter is fixed to the frame. The first slave piston has a first center axis. When viewed from the direction of the first center axis, a portion of an imaginary plane defined on the mounting surface is arranged within the contour of the first slave piston.

[0072] In the drive device according to the thirty-third aspect, the first slave piston can be efficiently arranged.

[0073] In the case of the technology disclosed in the present application, for example, a driving device can be configured simply. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] Figure 1It is a side view of the drive device, frame, and disk rotor according to the embodiment.

[0075] Figure 2 yes Figure 1 A perspective view of the drive device shown.

[0076] Figure 3 yes Figure 2 A cross-sectional view of the drive device at line III-III.

[0077] Figure 4 yes Figure 2 A cross-sectional view of the drive device at line IV-IV.

[0078] Figure 5 yes Figure 1 A perspective view of the drive device shown.

[0079] Figure 6 yes Figure 1 A perspective view of a driving piston and a driven piston of a driving device is shown.

[0080] Figure 7 yes Figure 4 A cross-sectional view of the drive device at line VII-VII.

[0081] Figure 8 yes Figure 7 A cross-sectional view of the drive device at line VIII-VIII.

[0082] Fig. 9 yes Figure 7 A cross-sectional view of the drive device at line IX-IX.

[0083] Description of Reference Numerals

[0084] 10 driving device, 12 base member, 14 adapter, 20 connecting member, 32 first slave piston, 34 first driving piston, 36 first chamber, 38 first driving transmission medium, 40 first slave cylinder bore, 42 first driving cylinder bore, 52 second slave piston, 54 second driving piston, 56 second chamber, 58 second driving transmission medium, 60 second slave cylinder bore, 62 second driving cylinder bore, 74 first force member, 76 first cable connecting portion, 80 second force member, 82 second cable connecting portion, 84 cable guide DETAILED DESCRIPTION

[0085] Hereinafter, the embodiments will be described with reference to the accompanying drawings. In the drawings, the same reference numerals represent corresponding or identical structures.

[0086] like Figure 1As shown, the drive device 10 of the present embodiment is configured as a disc brake caliper configured to apply braking force to the disc rotor 2. The drive device 10 is configured to be fixed to the frame 4 by the fixing member 6 and the fixing member 8. The structure of the drive device 10 can be applied to devices other than the disc brake caliper.

[0087] The driving device 10 includes a base member 12. The base member 12 is configured to be fixed to the frame 4 via the fixing member 6 and the fixing member 8. The driving device 10 includes an adapter 14. The adapter 14 is configured to be fixed to the frame 4. The base member 12 and the adapter 14 are connected.

[0088] like Figure 2 As shown, the adapter 14 has a fixing hole 16 for configuring a fixing member 6, and the fixing member 6 is configured to fix the adapter 14 to the frame 4. The adapter 14 has a fixing hole 18 for configuring a fixing member 8, and the fixing member 8 is configured to fix the adapter 14 to the frame 4. The drive device 10 includes a connecting member 20. The connecting member 20 connects the adapter 14 to the base member 12. The drive device 10 includes a connecting member 22. The connecting member 22 connects the adapter 14 to the base member 12.

[0089] like Figure 3 As shown, the base member 12 includes a first base 24 and a second base 26. The second base 26 is connected to the first base 24. In the present embodiment, the second base 26 is a member different from the first base 24, but the first base 24 and the second base 26 may be integrally formed as one member.

[0090] The first base 24 has a first through hole 24A. The second base 26 has a second through hole 26A. The connecting member 20 extends through the first through hole 24A and the second through hole 26A. The connecting member 20 has a rod 20A extending through the first through hole 24A and the second through hole 26A, and an external threaded portion 20B provided at a first end portion 20A1 of the rod 20A. The adapter 14 has a connecting threaded hole 28 screwed into the external threaded portion 20B.

[0091] Similarly, the first base 24 has a first through hole 24B. The second base 26 has a second through hole 26B. The connecting member 22 extends through the first through hole 24B and the second through hole 26B. The connecting member 22 has a rod 22A extending through the first through hole 24B and the second through hole 26B, and an external threaded portion 22B provided at a first end portion 22A1 of the rod 22A. The adapter 14 has a connecting threaded hole 30 screwed into the external threaded portion 22B.

[0092] The first base 24 has a first recess 24C provided at the end of the first through hole 24A. The connecting member 20 has a head 20C provided at the second end 20A2 of the rod 20A. The head 20C is arranged in the first recess 24C. The second base 26 has a second recess 26C provided at the end of the second through hole 26A. The adapter 14 has an adapter body 14A and a protrusion 14B, which protrudes from the adapter body 14A and is arranged in the second recess 26C. The connecting threaded hole 28 extends from the adapter body 14A to the protrusion 14B.

[0093] Similarly, the first base 24 has a first recess 24D provided at the end of the first through hole 24B. The connecting member 22 has a head 22C provided at the second end 22A2 of the rod 22A. The head 22C is arranged in the first recess 24D. The second base 26 has a second recess 26D provided at the end of the second through hole 26B. The adapter 14 has an adapter body 14A and a protrusion 14C, which protrudes from the adapter body 14A and is arranged in the second recess 26D. The connecting threaded hole 30 extends from the adapter body 14A to the protrusion 14C.

[0094] like Figure 3 As shown, the adapter 14 is a member different from the first base 24 and the second base 26. The connecting member 20 is a member different from the first base 24, the second base 26 and the adapter 14. The connecting member 20 is configured to connect the first base 24, the second base 26 and the adapter 14 to each other. The connecting member 22 is a member different from the first base 24, the second base 26 and the adapter 14. The connecting member 22 is configured to connect the first base 24, the second base 26 and the adapter 14 to each other. However, the adapter 14 may be formed as a single member with at least one of the first base 24 and the second base 26. The connecting member 20 may be formed as a single member with at least one of the first base 24, the second base 26 and the adapter 14. The connecting member 22 may be formed as a single member with at least one of the first base 24, the second base 26 and the adapter 14.

[0095] like Figure 4 As shown, the drive device 10 includes a first slave piston 32, a first drive piston 34, a first chamber 36, and a first drive transmission medium 38. The base member 12 includes a first slave cylinder bore 40 and a first drive cylinder bore 42 extending from the first slave cylinder bore 40. In the present embodiment, the first base body 24 includes the first slave cylinder bore 40. The first base body 24 includes the first drive cylinder bore 42.

[0096] The first slave piston 32 is disposed so as to be movable in the first slave cylinder bore 40. The first drive piston 34 is disposed so as to be movable in the first drive cylinder bore 42. The first chamber 36 is defined by the first slave cylinder bore 40, the first slave piston 32, and the first drive piston 34.

[0097] The first drive transmission medium 38 is arranged in the first chamber 36 so as to transmit the movement of the first drive piston 34 to the first slave piston 32. In the present embodiment, the first drive transmission medium 38 includes a solid member (solid member). However, the first drive transmission medium 38 is not limited to the present embodiment. For example, the first drive transmission medium 38 may also include other materials (e.g., liquids such as oil) instead of the solid member (solid member), or may include other materials (e.g., liquids such as oil) in addition to the solid member (solid member).

[0098] The solid component includes a plurality of spheres 44. In the present embodiment, the plurality of spheres 44 include metal material, but the plurality of spheres 44 may also include other materials (e.g., non-metal materials such as rubber and plastic) instead of metal material, or may include other materials (e.g., non-metal materials such as rubber and plastic) in addition to metal material.

[0099] Preferably, the outer diameter of each of the plurality of spheres 44 is in the range of 0.1 mm to 3 mm. More preferably, the outer diameter of each of the plurality of spheres 44 is in the range of 1 mm to 2 mm. In the present embodiment, the outer diameter of each of the plurality of spheres 44 is 1.5 mm. However, the outer diameter of each of the plurality of spheres 44 is not limited to the present embodiment and the above-mentioned numerical range.

[0100] The first drive piston 34 can move relative to the base member 12 along the first drive direction D11. The first driven piston 32 can move relative to the base member 12 along a first driven direction D12 different from the first drive direction D11. In the present embodiment, the first driven direction D12 is orthogonal to the first drive direction D11. The first driven direction D12 may not be orthogonal to the first drive direction D11.

[0101] The first driving piston 34 has a first driving center axis A11. The first driving piston 34 extends along the first driving center axis A11. The first driving center axis A11 is parallel to the first driving direction D11.

[0102] The drive device 10 further includes a first friction member 46. The first friction member 46 is disposed so as to be movable in the first driven direction D12 relative to the base member 12. The first driven piston 32 is disposed between the first friction member 46 and the first drive piston 34 in the first driven direction D12.

[0103] like Figure 4As shown, the drive device 10 further includes a second slave piston 52, a second drive piston 54, a second chamber 56, and a second drive transmission medium 58. The base member 12 includes a second slave cylinder bore 60 and a second drive cylinder bore 62 extending from the second slave cylinder bore 60. In the present embodiment, the second base body 26 includes the second drive cylinder bore 62. The second base body 26 includes the second slave cylinder bore 60.

[0104] The second slave piston 52 is provided to be movable in the second slave cylinder bore 60. The second drive piston 54 is provided to be movable in the second drive cylinder bore 62. The second chamber 56 is defined by the second slave cylinder bore 60, the second slave piston 52, and the second drive piston 54.

[0105] The second drive transmission medium 58 is arranged in the second chamber 56 so as to transmit the movement of the second drive piston 54 to the second slave piston 52. In the present embodiment, the second drive transmission medium 58 includes a solid member (solid member). However, the second drive transmission medium 58 is not limited to the present embodiment. For example, the second drive transmission medium 58 may also include other materials (such as liquids such as oil) instead of the solid member (solid member), or may include other materials (such as liquids such as oil) in addition to the solid member (solid member).

[0106] The solid component includes a plurality of spheres 64. In the present embodiment, the plurality of spheres 64 include metal material, but the plurality of spheres 64 may also include other materials (e.g., non-metal materials such as rubber and plastic) instead of metal material, or may include other materials (e.g., non-metal materials such as rubber and plastic) in addition to metal material.

[0107] Preferably, the outer diameter of each of the plurality of spheres 64 is in the range of 0.1 mm to 3 mm. More preferably, the outer diameter of each of the plurality of spheres 64 is in the range of 1 mm to 2 mm. In the present embodiment, the outer diameter of each of the plurality of spheres 64 is 1.5 mm. However, the outer diameter of each of the plurality of spheres 64 is not limited to the present embodiment and the above-mentioned numerical range.

[0108] The second driving piston 54 can move relative to the base member 12 along the second driving direction D21. The second driven piston 52 can move relative to the base member 12 along a second driven direction D22 different from the second driving direction D21. In the present embodiment, the second driven direction D22 is orthogonal to the second driving direction D21. The second driven direction D22 may not be orthogonal to the second driving direction D21.

[0109] The second drive piston 54 has a second drive center axis A21. The second drive piston 54 extends along the second drive center axis A21. The second drive center axis A21 extends along the second drive direction D21. In the present embodiment, the first drive center axis A11 and the second drive center axis A21 are parallel to each other. The first drive direction D11 and the second drive direction D21 are parallel to each other. However, the first drive direction D11 and the second drive direction D21 may not be parallel to each other. The first drive center axis A11 and the second drive center axis A21 may not be parallel to each other.

[0110] The drive device 10 further includes a second friction member 66. The second friction member 66 is arranged to be movable in the second driven direction D22 relative to the base member 12. The second driven piston 52 is arranged between the second friction member 66 and the second drive piston 54 in the second driven direction D22.

[0111] like Figure 5 As shown, the base member 12 has a configuration disc rotor 2 ( Figure 1 ) of the slit 68. The first friction member 46 and the second friction member 66 are arranged to be movable in the slit 68.

[0112] like Figure 2 As shown, the first friction member 46 and the second friction member 66 are supported by the support member 67 so as to be movable relative to the base member 12. The drive device 10 further includes a biasing member 70. The biasing member 70 is supported by the support member 67 so as to be movable relative to the base member 12. The biasing member 70 is arranged between the first friction member 46 and the second friction member 66. The biasing member 70 is arranged in the slit 68. The biasing member 70 biases the first friction member 46 toward the first slave piston 32 side, and biases the second friction member 66 toward the second slave piston 52 side.

[0113] like Figure 4 As shown, the first drive piston 34 can move forward and backward relative to the first slave cylinder bore 40. The first drive piston 34 can move from the first initial position P11 to the first drive position P12 relative to the base member 12. The first drive piston 34 can move from the first initial position P11 to the first drive position P12 along the first drive direction D11 relative to the base member 12.

[0114] The first slave piston 32 is movable from the first stationary position P31 to the first driven position P32 along the first driven direction D12 relative to the base member 12. The first stationary position P31 corresponds to the first initial position P11. The first driven position P32 corresponds to the first driving position P12. When the first driving piston 34 is arranged in the first initial position, the first slave piston 32 is arranged in the first stationary position P31. When the first driving piston 34 moves from the first initial position P11 to the first driving position P12, the first slave piston 32 moves from the first stationary position P31 to the first driven position P32.

[0115] The first drive piston 34 has a first piston body 34A. The first piston body 34A presses the first drive transmission medium 38 according to the movement of the first drive piston 34. The first piston body 34A moves the first drive transmission medium 38 according to the movement of the first drive piston 34 from the first initial position P11 to the first drive position P12. When the first drive piston 34 is arranged in the first drive position P12, the first piston body 34A is at least partially arranged in the first slave cylinder bore 40. When the first drive piston 34 is arranged in the first initial position P11, the first piston body 34A is at least partially arranged outside the first slave cylinder bore 40.

[0116] Reference Figure 4 , Figure 6 as well as Figure 7 In the present embodiment, when the first drive piston 34 is arranged at the first drive position P12, the first piston body 34A is partially arranged in the first slave cylinder bore 40. When the first drive piston 34 is arranged at the first initial position P11, the first piston body 34A is entirely arranged outside the first slave cylinder bore 40. The volume of the portion of the first drive piston 34 arranged in the first slave cylinder bore 40 when the first drive piston 34 is arranged at the first drive position P12 is larger than the volume of the portion of the first drive piston 34 arranged in the first slave cylinder bore 40 when the first drive piston 34 is arranged at the first initial position P11.

[0117] like Figure 6 As shown, the first drive piston 34 has a first guide portion 34B extending from the first piston body 34A. The maximum outer diameter DR11 of the first piston body 34A is larger than the maximum outer diameter DR12 of the first guide portion 34B. The first piston body 34A has a first tapered surface 34C. The first piston body 34A has a roughly cylindrical shape. The first guide portion 34B has a roughly cylindrical shape. However, the shape of the first drive piston 34 is not limited to the present embodiment. The first driven piston 32 has a first piston recess 32A. The first piston recess 32A is configured to avoid interference with the first drive piston 34.

[0118] like Figure 4 As shown, the base member 12 has a first guide hole 72. The first guide hole 72 extends from the first slave cylinder bore 40 to the side opposite to the first drive cylinder bore 42. The first drive piston 34 is configured to be movable in the first guide hole 72. In the first initial position P11 and the first drive position P12, the first guide portion 34B of the first drive piston 34 is at least partially configured in the first guide hole 72. The first base body 24 has a first tube 73. The first guide hole 72 is at least partially provided in the first tube 73.

[0119] The drive device 10 further includes a first urging member 74 that urges the first drive piston 34 toward the first initial position P11. The first urging member 74 is disposed in the first guide hole 72. The first urging member 74 contacts the first guide portion 34B. The first urging member 74 includes, for example, a coil spring.

[0120] The drive device 10 further includes a cable mounting structure 75. The cable mounting structure 75 is mounted on the first tube 73 in a manner of receiving the housing W2 of the mechanical cable W. The cable mounting structure 75 includes a cable mounting bolt 75A and a nut 75B. The cable mounting bolt 75A includes a recess 75A1 and a guide passage 75A2. The guide passage 75A2 extends from the recess 75A1 and is connected to the first guide hole 72. The end of the housing W2 is disposed in the recess 75A1. The cable W1 extends to the first guide hole 72 through the guide passage 75A2.

[0121] The first drive piston 34 has a first cable connecting portion 76, which is configured to be connected to the cable W1 of the mechanical cable W. The first drive piston 34 has a first cable guide hole 34D. The first cable guide hole 34D extends from the first cable connecting portion 76 to guide the cable W1 of the mechanical cable W. In the present embodiment, the first cable connecting portion 76 is mounted on the first piston body 34A. When the first drive piston 34 is arranged in the first initial position P11, the first cable connecting portion 76 is at least partially arranged outside the first drive cylinder bore 42.

[0122] The first cable connection portion 76 includes a first cable fixing member 76A and a first fastening portion 76B. The first cable fixing member 76A includes a first external threaded portion 76C that is screwed into the threaded hole 34E of the first drive piston 34. The first fastening portion 76B is disposed in the first cable guide hole 34D. By screwing in the first cable fixing member 76A, the first fastening portion 76B fastens the cable W1. Thus, the first drive piston 34 is connected to the cable W1.

[0123] like Figure 4As shown, the second drive piston 54 can move forward and backward relative to the second slave cylinder bore 60. The second drive piston 54 can move from the second initial position P21 to the second drive position P22 relative to the base member 12. The second drive piston 54 can move from the second initial position P21 to the second drive position P22 along a second drive direction D21 different from the first drive direction D11 relative to the base member 12. In the present embodiment, the second drive direction D21 is a direction opposite to the first drive direction D11.

[0124] The second slave piston 52 is movable from the second static position P41 to the second driven position P42 along the second driven direction D22 relative to the base member 12. The second static position P41 corresponds to the second initial position P21. The second driven position P42 corresponds to the second driving position P22. When the second driving piston 54 is arranged in the second initial position, the second slave piston 52 is arranged in the second static position P41. When the second driving piston 54 moves from the second initial position P21 to the second driving position P22, the second slave piston 52 moves from the second static position P41 to the second driven position P42.

[0125] The second drive piston 54 has a second piston body 54A. The second piston body 54A presses the second drive transmission medium 58 according to the movement of the second drive piston 54. The second piston body 54A moves the second drive transmission medium 58 according to the movement of the second drive piston 54 from the second initial position P21 to the second drive position P22. When the second drive piston 54 is arranged in the second drive position P22, the second piston body 54A is at least partially arranged in the second slave cylinder bore 60. When the second drive piston 54 is arranged in the second initial position P21, the second piston body 54A is at least partially arranged outside the second slave cylinder bore 60.

[0126] Reference Figure 4 , Figure 6 as well as Figure 7 In the present embodiment, when the second drive piston 54 is arranged at the second drive position P22, the second piston body 54A is partially arranged in the second slave cylinder bore 60. When the second drive piston 54 is arranged at the second initial position P21, the second piston body 54A is entirely arranged outside the second slave cylinder bore 60. The volume of the portion of the second drive piston 54 arranged in the second slave cylinder bore 60 when the second drive piston 54 is arranged at the second drive position P22 is larger than the volume of the portion of the second drive piston 54 arranged in the second slave cylinder bore 60 when the second drive piston 54 is arranged at the second initial position P21.

[0127] like Figure 6As shown, the second drive piston 54 has a second guide portion 54B extending from the second piston body 54A. The maximum outer diameter DR21 of the second piston body 54A is larger than the maximum outer diameter DR22 of the second guide portion 54B. The second piston body 54A has a second tapered surface 54C. The second piston body 54A has a roughly cylindrical shape. The second guide portion 54B has a roughly cylindrical shape. However, the shape of the second drive piston 54 is not limited to this embodiment. The second driven piston 52 has a second piston recess 52A. The second piston recess 52A is configured to avoid interference with the second drive piston 54.

[0128] like Figure 4 As shown, the base member 12 has a second guide hole 78. The second guide hole 78 extends from the second slave cylinder bore 60 to the side opposite to the second drive cylinder bore 62. The second drive piston 54 is configured to be movable in the second guide hole 78. In the second initial position P21 and the second drive position P22, the second guide portion 54B of the second drive piston 54 is at least partially configured in the second guide hole 78. The second base body 26 has a second tube 79. The second guide hole 78 is at least partially provided in the second tube 79.

[0129] The drive device 10 further includes a second urging member 80 that urges the second drive piston 54 toward the second initial position P21. The second urging member 80 is disposed in the second guide hole 78. The second urging member 80 contacts the second guide portion 54B. The second urging member 80 includes, for example, a coil spring.

[0130] The second driving piston 54 has a second cable connecting portion 82, which is configured to be connected to the cable W1 of the mechanical cable W. The second driving piston 54 has a second cable guide hole 54D. The second cable guide hole 54D extends from the second cable connecting portion 82 to guide the cable W1 of the mechanical cable W. In the present embodiment, the second cable connecting portion 82 is mounted on the second piston body 54A. When the second driving piston 54 is arranged in the second initial position P21, the second cable connecting portion 82 is at least partially arranged outside the second driving cylinder bore 62.

[0131] The second cable connection portion 82 includes a second cable fixing member 82A and a second fastening portion 82B. The second cable fixing member 82A includes a second external threaded portion 82C that is screwed into the threaded hole 54E of the second drive piston 54. The second fastening portion 82B is disposed in the second cable guide hole 54D. By screwing in the second cable fixing member 82A, the second fastening portion 82B fastens the cable W1. Thus, the second drive piston 54 is connected to the cable W1.

[0132] The driving device 10 further includes a cable guide 84 mounted on the base member 12 to guide the cable W1 of the mechanical cable W. The cable guide 84 includes a guide tube 84A having an inner peripheral surface and a sliding member 84B provided on the inner peripheral surface of the guide tube 84A. The sliding member 84B includes a non-metallic member. As an example of the sliding member 84B, a resin can be cited.

[0133] The drive device 10 further includes a cover 85. The cover 85 is mounted on the base member 12 so as to cover the first cable connection portion 76. The cover 85 is disposed between the base member 12 and the cable guide 84. The cover 85 has a recess 86A and an internal passage 86B. The internal passage 86B extends from the recess 86A toward the first drive cylinder bore 42. The end 84A of the cable guide 84 is disposed in the recess 86.

[0134] The second tube 79 has a recessed portion 79A and an internal passage 79B. The internal passage 79B extends from the recessed portion 79A toward the second guide hole 78. The end portion 84B of the cable guide 84 is disposed in the recessed portion 79A.

[0135] like Figure 3 As shown, the first slave cylinder bore 40 and the second slave cylinder bore 60 have shapes that are point-symmetrical with respect to the reference point RP. The first base 24 and the second base 26 have shapes that are at least partially point-symmetrical with respect to the reference point RP disposed between the first slave piston 32 and the second slave piston 52. The first drive cylinder bore 42 and the second drive cylinder bore 62 have shapes that are point-symmetrical with respect to the reference point RP. The first drive piston 34 and the second drive piston 54 are disposed point-symmetrically with respect to the reference point RP. The first base 24 and the second base 26 have shapes that are point-symmetrical with respect to the reference point RP within a range AR from the first piston body 34A to the second piston body 54A. On the other hand, the first tube 73 and the second tube 79 are disposed at positions that are point-symmetrical with respect to the reference point RP, but do not have point-symmetrical shapes. However, the first tube 73 and the second tube 79 may also have shapes that are point-symmetrical with respect to the reference point RP.

[0136] like Figure 7As shown, the first slave piston 32 has a first center axis A12. The second slave piston 52 has a second center axis A22. In the present embodiment, the first center axis A12 is consistent with the second center axis A22, but it may also be that the first center axis A12 is offset from the second center axis A22. In the present embodiment, the first center axis A12 is offset from the first drive center axis A11. The second center axis A22 is offset from the second drive center axis A21. However, the first center axis A12 may also intersect with the first drive center axis A11. The second center axis A22 may also intersect with the second drive center axis A21.

[0137] like Figure 8 As shown, the adapter 14 has a mounting surface 86 facing the frame 4 side when the adapter 14 is fixed to the frame 4. The adapter 14 has a mounting surface 88 facing the frame 4 side when the adapter 14 is fixed to the frame 4. When viewed from the direction of the first center axis A12, a portion of the imaginary plane PL defined on the mounting surface 86 or the mounting surface 88 is arranged within the contour of the first slave piston 32. However, the positional relationship between the imaginary plane PL and the first center axis A12 is not limited to this embodiment.

[0138] like Fig. 9 As shown, when viewed from the direction of the second center axis A22, a portion of the imaginary plane PL defined on the mounting surface 86 or the mounting surface 88 is disposed within the contour of the second slave piston 52. However, the positional relationship between the imaginary plane PL and the second center axis A22 is not limited to this embodiment.

[0139] In addition, in the present application, "having" and its derivatives are non-restrictive terms that describe the existence of constituent elements, and do not exclude the existence of other constituent elements that are not described. This also applies to "having", "including" and their derivatives.

[0140] The words “member”, “part”, “element”, “body” and “structure” may have multiple meanings such as a single part or a plurality of parts.

[0141] Ordinal numbers such as "first" and "second" are only used to identify structures and do not have other meanings (such as a specific order, etc.). For example, the existence of a "first element" does not imply the existence of a "second element", and the existence of a "second element" does not imply the existence of a "first element".

[0142] The words "substantially", "about" and "approximately" to indicate the degree may mean a reasonable deviation such that the final result will not change significantly. All numerical values ​​described in this application may be interpreted as including the words "substantially", "about" and "approximately".

[0143] In view of the above disclosure, it is obvious that various changes and modifications can be made to the present invention. Therefore, the present invention can be implemented in a method different from the specific disclosure of this application within the scope of the present invention.

Claims

1. A driving device, wherein: The driving device comprises: a base member having a first slave cylinder bore and a first drive cylinder bore extending from the first slave cylinder bore; a first slave piston, the first slave piston being configured to be movable within the first slave cylinder bore; a first driving piston, the first driving piston being capable of advancing and retreating relative to the first slave cylinder bore and being arranged to be movable in the first driving cylinder bore; a first chamber defined by the first slave cylinder bore, the first slave piston, and the first drive piston; as well as a first drive transmission medium disposed in the first chamber so as to transmit movement of the first drive piston to the first slave piston, The first drive piston has: a first cable connection portion configured to be connected to a cable of a mechanical cable; and a first cable guide hole extending from the first cable connecting portion so as to guide the cable of the mechanical cable, and the first driving piston is capable of allowing the cable to pass through the inside, The first driven piston has a first piston recess for avoiding interference on the end surface facing the first driving piston. The base member has a second slave cylinder bore and a second drive cylinder bore extending from the second slave cylinder bore, The driving device also has: a second slave piston, the second slave piston being configured to be movable within the second slave cylinder bore; a second driving piston, the second driving piston being capable of advancing and retreating relative to the second driven cylinder bore and being arranged to be movable in the second driving cylinder bore; a second chamber defined by the second slave cylinder bore, the second slave piston, and the second drive piston; as well as a second drive transmission medium, the second drive transmission medium being disposed in the second chamber so as to transmit movement of the second drive piston to the second slave piston, The second drive piston has: a second cable connection portion configured to be connected to the cable of the mechanical cable; and a second cable guide hole extending from the second cable connecting portion so as to guide the cable of the mechanical cable, and the second driving piston is capable of allowing the cable to pass through the inside, When the first drive piston is moved relative to the base member in a first drive direction and the second drive piston is moved relative to the base member in a second drive direction under the action of the cable, the second drive direction is different from the first drive direction.

2. The driving device according to claim 1, wherein: The first drive transfer medium includes a solid state component.

3. A driving device, wherein: The driving device comprises: a base member having a first slave cylinder bore and a first drive cylinder bore extending from the first slave cylinder bore; a first slave piston, the first slave piston being configured to be movable within the first slave cylinder bore; a first drive piston configured to be movable within a first drive cylinder bore; a first chamber defined by the first slave cylinder bore, the first slave piston, and the first drive piston; as well as a first drive transmission medium disposed in the first chamber so as to transmit movement of the first drive piston to the first slave piston, The first drive transfer medium comprises a solid member, The first drive piston has: a first cable connection portion configured to be connected to a cable of a mechanical cable; and a first cable guide hole extending from the first cable connecting portion so as to guide the cable of the mechanical cable, and the first driving piston is capable of allowing the cable to pass through the inside, The first driven piston has a first piston recess for avoiding interference on the end surface facing the first driving piston. The base member has a second slave cylinder bore and a second drive cylinder bore extending from the second slave cylinder bore, The driving device also has: a second slave piston, the second slave piston being configured to be movable within the second slave cylinder bore; a second driving piston, the second driving piston being capable of advancing and retreating relative to the second driven cylinder bore and being arranged to be movable in the second driving cylinder bore; a second chamber defined by the second slave cylinder bore, the second slave piston, and the second drive piston; as well as a second drive transmission medium, the second drive transmission medium being disposed in the second chamber so as to transmit movement of the second drive piston to the second slave piston, The second drive piston has: a second cable connection portion configured to be connected to the cable of the mechanical cable; and a second cable guide hole extending from the second cable connecting portion so as to guide the cable of the mechanical cable, and the second driving piston is capable of allowing the cable to pass through the inside, When the first drive piston is moved relative to the base member in a first drive direction and the second drive piston is moved relative to the base member in a second drive direction under the action of the cable, the second drive direction is different from the first drive direction.

4. The driving device according to claim 2 or 3, wherein: The solid member includes a plurality of spheres.

5. The driving device according to claim 4, wherein: The plurality of spheres include metal material.

6. The driving device according to claim 4, wherein: The outer diameter of each of the plurality of spheres is in the range of 0.1 mm to 3 mm.

7. The driving device according to any one of claims 1 to 3, wherein: The first drive piston is movable relative to the base member in a first drive direction, The first driven piston is movable relative to the base member in a first driven direction different from the first driving direction.

8. The driving device according to claim 7, wherein: The first driven direction is orthogonal to the first driving direction.

9. The driving device according to any one of claims 1 to 3, wherein: The first drive piston is movable relative to the base member from a first initial position to a first drive position, The first drive piston has a first piston body that moves the first drive transmission medium according to movement of the first drive piston from the first initial position to the first drive position.

10. The driving device according to claim 9, wherein: When the first drive piston is arranged at the first drive position, the first piston body is at least partially arranged in the first slave cylinder bore.

11. The driving device according to claim 9, wherein: When the first drive piston is arranged at the first initial position, the first piston body is at least partially arranged outside the first slave cylinder bore.

12. The driving device according to claim 9, wherein: The first drive piston has a first guide portion extending from the first piston body, The maximum outer diameter of the first piston body is larger than the maximum outer diameter of the first guide portion.

13. The driving device according to claim 9, wherein: The first piston body has a first conical surface.

14. The driving device according to claim 9, wherein: The drive device further includes a first urging member configured to urge the first drive piston toward the first initial position.

15. The driving device according to any one of claims 1 to 3, wherein: The first drive piston is movable relative to the base member along the first drive direction from a first initial position to a first drive position, The second drive piston is movable relative to the base member in the second drive direction from a second initial position to a second drive position.

16. The driving device according to claim 15, wherein: The second driving direction is a direction opposite to the first driving direction.

17. The driving device according to claim 15, wherein: The base member includes a first base and a second base, the second base is connected to the first base and is a member different from the first base, The first substrate has the first driven cylinder bore and the first driving cylinder bore, The second base body has the second driven cylinder bore and the second driving cylinder bore, The first base body and the second base body have shapes that are at least partially point-symmetrical to each other with respect to a reference point disposed between the first slave piston and the second slave piston.

18. The driving device according to claim 17, wherein: The first slave cylinder bore and the second slave cylinder bore have shapes that are point-symmetrical with respect to the reference point. The first drive cylinder bore and the second drive cylinder bore have shapes that are point-symmetrical to each other about the reference point.

19. The driving device according to claim 17, wherein: The first driving piston has a first piston body, and the first piston body presses the first driving transmission medium according to the movement of the first driving piston. The second driving piston has a second piston body, and the second piston body presses the second driving transmission medium according to the movement of the second driving piston. The first base body and the second base body have shapes that are point-symmetrical to each other about the reference point in a range from the first piston body to the second piston body.

20. The driving device according to claim 17, wherein: The first drive piston and the second drive piston are arranged point-symmetrically with respect to the reference point.

21. The driving device according to any one of claims 1 to 3, wherein: The driving device further includes a cable guide mounted on the base member to guide a wire of the mechanical cable.

22. The driving device according to claim 21, wherein: The cable guide has a guide pipe having an inner peripheral surface and a sliding member provided on the inner peripheral surface of the guide pipe.

23. A driving device, wherein: The driving device comprises: a base member, the base member comprising a first base body and a first driving cylinder bore extending from the first driven cylinder bore, and a second base body having a second driven cylinder bore and a second driving cylinder bore extending from the second driven cylinder bore, and the second base body is a member different from the first base body; a first slave piston, the first slave piston being configured to be movable within the first slave cylinder bore; a first driving piston, the first driving piston being capable of advancing and retreating relative to the first slave cylinder bore and being arranged to be movable in the first driving cylinder bore; a second slave piston, the second slave piston being configured to be movable within the second slave cylinder bore; a second driving piston, the second driving piston being capable of advancing and retreating relative to the second driven cylinder bore and being arranged to be movable in the second driving cylinder bore; an adapter that is a member different from the first base and the second base and is configured to be fixed to the frame; and a connecting member, the connecting member being a member different from the first base, the second base, and the adapter, and being configured to connect the first base, the second base, and the adapter to each other, The first drive piston has: a first cable connection portion configured to be connected to a cable of a mechanical cable; and a first cable guide hole extending from the first cable connecting portion so as to guide the cable of the mechanical cable, and the first driving piston is capable of allowing the cable to pass through the inside, The first driven piston has a first piston recess for avoiding interference on the end surface facing the first driving piston. The second drive piston has: a second cable connection portion configured to be connected to the cable of the mechanical cable; and a second cable guide hole extending from the second cable connecting portion so as to guide the cable of the mechanical cable, and the second driving piston is capable of allowing the cable to pass through the inside, When the first drive piston is moved relative to the base member in a first drive direction and the second drive piston is moved relative to the base member in a second drive direction under the action of the cable, the second drive direction is different from the first drive direction.

24. The driving device according to claim 23, wherein: The first substrate has a first through hole, The second substrate has a second through hole, The connecting member extends through the first through hole and the second through hole.

25. The driving device according to claim 24, wherein: The connecting member includes a rod extending through the first through hole and the second through hole and an external thread portion provided at a first end portion of the rod. The adapter has a connecting threaded hole that is screwed into the external threaded portion.

26. The driving device according to claim 25, wherein: The first substrate has a first recessed portion provided at an end portion of the first through hole. The connecting member has a head disposed at the second end of the rod, The head portion is disposed in the first recess.

27. The driving device according to claim 26, wherein: The second base body has a second recessed portion provided at an end portion of the second through hole, The adapter includes an adapter body and a protrusion that protrudes from the adapter body and is disposed in the second recess.

28. The driving device according to claim 27, wherein: The coupling threaded hole extends from the adapter body to the protrusion.

29. The driving device according to any one of claims 23 to 28, wherein: The adapter has a fixing hole in which a fixing member is disposed, and the fixing member is configured to fix the adapter to the frame.

30. The driving device according to any one of claims 23 to 28, wherein: The adapter has a mounting surface facing the frame when the adapter is fixed to the frame. The first slave piston has a first central axis, When viewed from the direction of the first center axis, a portion of an imaginary plane defined on the mounting surface is arranged within the contour of the first slave piston.

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