Electric brake device

Abstract

The electric brake device is provided with a housing for storing a load sensor (34) and rotatably holding the rotating part of the linear motion conversion mechanism, and a housing assembled to the housing. The housing rotatably holds a transmission mechanism that transmits the rotational motion of the electric motor, and the rotating part of the linear motion conversion mechanism is mechanically engaged with the transmission mechanism. In such an electric brake device, a load sensor (34) is provided with a first terminal (35) which is disposed in an annular shape centered on a rotation axis (O) of a rotation part of a linear motion conversion mechanism, and a housing is provided with a second terminal which is electrically connected to the first terminal (35) by being in contact with the first terminal (35).

Description

Technical Field

[0001] The invention relates to an electric brake device. Background Art

[0002] As a caliper-type electric brake device mounted on a vehicle, there is a device described in Patent Document 1. The electric brake device includes an electric motor and a direct-acting conversion mechanism. The direct-acting conversion mechanism converts the rotational motion generated by the electric motor into a linear motion. Moreover, the electric brake device generates a braking force on the wheel by pressing a friction member that is linked to the linear motion converted by the direct-acting conversion mechanism onto a rotating body that rotates together with the wheel. In addition, the electric brake device includes a load sensor that detects the pressing force of the friction member on the rotating body.

[0003] Patent Document 1: Korean Patent Publication No. 10-2021-0002011

[0004] When assembling the components of the electric brake device as described above during manufacture, it is necessary to perform alignment and phase matching between a large number of components. In addition, the work required for such alignment and phase matching may become an important factor that hinders the improvement of the productivity of the electric brake device. Summary of the invention

[0005] The electric brake device that solves the above-mentioned problem transmits the rotation of the electric motor to the direct-acting conversion mechanism through a transmission mechanism. In the direct-acting conversion mechanism, the rotational motion transmitted by the transmission mechanism is converted from the rotational motion of the rotating part to the linear motion of the direct-acting part, and the friction member linked with the linear motion of the direct-acting part is pressed against the rotating body rotating with the wheel to generate a braking force on the wheel. In addition, the electric brake device is provided with: a sensor that detects the pressing load of the friction member on the above-mentioned rotating body and outputs a signal corresponding to the detected pressing load to the output part; a connecting part that is a part that electrically connects the above-mentioned output part to the control part that controls the electric brake device; a housing that stores the sensor, the output part and the direct-acting conversion mechanism; and a casing that stores the transmission mechanism, the control part and the connecting part. Moreover, the electric brake device is manufactured by mechanically engaging the rotating part of the direct-acting conversion mechanism with the transmission mechanism when assembling the housing and the casing. Moreover, the rotating part in the electric brake device is coaxially arranged with the rotation axis of the transmission mechanism, and the above-mentioned transmission mechanism directly engages with the rotating part. In addition, one of the output part and the connecting part has a contacted part formed in a circular ring shape or an arc shape and arranged around the above-mentioned rotation axis. Moreover, the other of the output part and the connecting part has a contact part that electrically connects the output part and the connecting part by contacting the contacted part in a state where the housing and the shell are assembled.

[0006] The contacted portion of the electric brake device is formed into a circular ring shape or an arc shape configured with the rotation axis as the center. Therefore, even if the relative rotation phase of the outer shell and the housing around the rotation axis changes to a certain extent, the electrical connection between the output portion and the connecting portion will not be interrupted. In addition, the output portion and the connecting portion are electrically connected through the contact between the contact portion and the non-contact portion. Therefore, when the outer shell and the housing are relatively rotated, the output portion and the connecting portion will not interfere with each other. Thus, after the rotating portion and the transmission mechanism are meshed, the outer shell and the housing can also be relatively rotated around the above-mentioned rotation axis. Thus, when the outer shell and the housing are assembled, the phase matching of the rotating portion and the transmission mechanism can be implemented by the relative rotation of the outer shell and the housing. Therefore, the electric brake device has the effect of facilitating the assembly work during manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a diagram showing a cross-sectional structure of an embodiment of an electric brake device together with the configuration of its surroundings.

[0008] Figure 2 It is along Figure 1 A cross-sectional view of the electric brake device taken along line 2-2.

[0009] Figure 3 It is a perspective view of the front end portion of the threaded shaft included in the electric brake device.

[0010] Figure 4 It is a top view of the third gear included in the electric brake device.

[0011] Figure 5 It is a perspective view of a load sensor included in the electric brake device.

[0012] Figure 6 This is a top view of the load cell as viewed from the axial rear.

[0013] Figure 7 It is a partial cross-sectional view of the peripheral portion of the terminal of the above-mentioned electric brake device.

[0014] Figure 8 The diagram shows a state of a first step of assembling the case to the housing in the manufacturing process of the electric brake device.

[0015] Fig. 9 It is a figure which shows the state of the second process of the said assembly.

[0016] Fig.10 It is a figure which shows the state of the third process of the said assembly.

[0017] Fig.11 It is a top view of a load sensor according to Modification 1 of the electric brake device.

[0018] Fig.12 It is a top view of a load sensor according to a second modification of the electric brake device.

[0019] Fig.13 It is a cross-sectional view of a case-side terminal and its surroundings in Modification 3 of the electric brake device.

[0020] Fig.14 It is a perspective view of a case-side terminal of a fourth modification of the electric brake device.

[0021] Fig.15 It is a perspective view of a load sensor according to a fifth modification of the electric brake device.

[0022] Fig.16 It is a top view of a load sensor according to a sixth modification of the electric brake device. DETAILED DESCRIPTION

[0023] Below, according to Figures 1 to 10 An embodiment in which the electric brake device is embodied will be described.

[0024] <Composition of electric brake system>

[0025] First, refer to Figure 1 as well as Figure 2 The structure of the electric brake device 10 according to the present embodiment will be described. Figure 1 2 shows a cross-sectional structure of the electric brake device 10 and its peripheral configuration. Figure 2 It is along Figure 1 2 is a cross-sectional view of the electric brake device 10 taken along line 2-2 of FIG. The electric brake device 10 includes a drive unit 11 and a caliper unit 12 .

[0026] The drive unit 11 includes an electric motor 13 and a transmission mechanism 14. The transmission mechanism 14 is a mechanism for reducing the speed of rotation of the electric motor 13 and transmitting the rotation. In the present embodiment, a reduction gear mechanism including a first gear 15 connected to the electric motor 13, a second gear 16 meshing with the first gear 15, and a third gear 17 meshing with the second gear 16 is used as the transmission mechanism 14. In addition, in the present embodiment, the third gear 17 of such a transmission mechanism 14 corresponds to a rotating member rotated by the electric motor 13. The electric motor 13 is assembled to a housing 18 as a casing of the drive unit 11. In addition, a cover 19 is assembled to the housing 18. Moreover, a storage space of the transmission mechanism 14 is formed by the housing 18 and the cover 19. In addition, the first gear 15, the second gear 16, and the third gear 17 constituting the transmission mechanism 14 are respectively rotatably held in the housing 18. In addition, the drive unit 11 includes a circuit board 20 including a CPU 21 as a control unit for controlling the output of the electric motor 13. The circuit board 20 is stored in the housing 18 and the cover 19 in a state separated from the transmission mechanism 14 .

[0027] On the other hand, the caliper part 12 has a housing 22, a piston 23, and a direct-acting conversion mechanism 25. The housing 22, which is the housing of the caliper part 12, is assembled to the housing 18. The housing 22 has a cylindrical cylinder 24. The cylinder 24 holds the piston 23 in a slidable manner. The direct-acting conversion mechanism 25 is a mechanism having a rotating part and a direct-acting part, and converting the rotational motion of the rotating part into the linear motion of the direct-acting part. In the case of this embodiment, a feed screw mechanism having a threaded shaft 26 as a rotating part and a nut 27 as a direct-acting part is used as the direct-acting conversion mechanism 25. The threaded shaft 26 is coaxially arranged with the rotation axis O of the third gear 17 of the transmission mechanism 14. In addition, the threaded shaft 26 is directly mechanically meshed with the third gear 17. As a result, the threaded shaft 26 is connected to the third gear 17 in a manner that can transmit rotational motion. On the other hand, the nut 27 is connected to the piston 23 in a manner that can transmit linear motion. In addition, the direct-acting conversion mechanism 25 is assembled to the electric brake device 10 in such a manner that the rotation axis O of the threaded shaft 26 is located on the rotation axis of the third gear 17. The threaded shaft 26 of such a direct-acting conversion mechanism 25 is rotatably held by the nut 27. In addition, the nut 27 is held by the cylinder 24 via the piston 23. Thus, the threaded shaft 26 of the direct-acting conversion mechanism 25 is rotatably held by the housing 22 via the nut 27 and the piston 23.

[0028] The electric brake device 10 is arranged on the side of the wheel 28 of the automobile. A brake disc 32 sandwiched by two friction members 30 and 31 is provided so as to rotate integrally on the wheel shaft 29 which is the rotation axis of the wheel 28. When the piston 23 presses one of the two friction members 30 and 31, the two friction members 30 and 31 operate in a linked manner so that the interval between the two members becomes narrower.

[0029] Such an electric brake device 10 generates a braking force on the wheel 28 in the following manner. The rotation of the electric motor 13 is decelerated by the first gear 15, the second gear 16, and the third gear 17 through the transmission mechanism 14, and is transmitted to the threaded shaft 26 of the direct motion conversion mechanism 25. In the direct motion conversion mechanism 25, the rotational motion of the threaded shaft 26 is converted into the direct motion of the nut 27. In addition, the friction members 30 and 31 press the brake disc 32 in conjunction with the linear motion, thereby generating a braking force on the wheel 28. In this embodiment, the brake disc 32 corresponds to the rotating body.

[0030] In the following description, in the electric brake device 10, the direction parallel to the rotation axis O of the threaded shaft 26 is described as the axial direction. In addition, in the axial direction, when viewed from the third gear 17, the side where the nut 27, which is a direct-acting element of the direct-acting conversion mechanism 25, is located is described as the axial front F, and the opposite side is described as the axial rear R.

[0031] In addition, if Figure 2 As shown in FIG. 1 , the threaded shaft 26 of the direct-acting conversion mechanism 25 has a threaded portion 26A provided with a thread that meshes with the nut 27. In addition, the threaded shaft 26 has a shaft portion 26B extending from the threaded portion 26A to the axial rear R. An axial hole 22A through which the shaft portion 26B passes is provided in a portion of the wall surface of the housing 22 corresponding to the axial rear R of the cylinder 24. Furthermore, the threaded shaft 26 is provided in the housing 22 in a state where the threaded portion 26A is stored in the cylinder 24 and the threaded portion 26A protrudes to the axial rear R through the axial hole 22A.

[0032] <Connection structure between the screw shaft and the third gear>

[0033] Next, refer to Figure 3 as well as Figure 4 , the connection structure between the threaded shaft 26 and the third gear 17 will be described. Figure 3 FIG. 2 shows a three-dimensional structure of the end portion of the threaded shaft 26 at the axial rear R. Figure 4 The planar structure of the third gear 17 viewed from the axial front F is shown.

[0034] As described above, the threaded shaft 26 of the direct motion conversion mechanism 25 is connected to the third gear 17 of the transmission mechanism 14 in a manner that allows the transmission of rotational motion. Figure 3 As shown in FIG. 1 , the screw shaft 26 has a fitting protrusion 39 in the shape of a quadrangular prism at the end portion of the shaft portion 26B in the axial rear direction R. Figure 4As shown, the third gear 17 has a fitting recess 41 at its center, which is a quadrilateral hole into which the fitting protrusion 39 of the threaded shaft 26 can fit. The threaded shaft 26 and the third gear 17 are assembled to the electric brake device 10 in a state where the fitting protrusion 39 and the fitting recess 41 are fitted. Moreover, the third gear 17 and the threaded shaft 26 are directly mechanically meshed by the fitting of these fitting protrusions 39 and the fitting recess 41.

[0035] <Load sensor and terminal structure>

[0036] like Figure 2 As shown, the electric brake device 10 includes a load sensor 34, which is a sensor for detecting the pressing load applied by the friction members 30 and 31 to the brake disc 32. The load sensor 34 is stored in the housing 22. The load sensor 34 is arranged in a portion of the cylinder 24 that is axially rearward R of the threaded portion 26A. If the friction members 30 and 31 apply pressure to the brake disc 32, the reaction force thereof is applied to the piston 23. The reaction force applied to the piston 23 is transmitted to the threaded shaft 26 via the nut 27. The load sensor 34 is arranged to receive the reaction force transmitted to the threaded shaft 26. Moreover, the load sensor 34 is configured to output a signal corresponding to the reaction force received from the threaded shaft 26 as a detection signal of the pressing load.

[0037] exist Figure 5 FIG. 3 shows a three-dimensional structure of the load sensor 34. Figure 6 The planar structure of the load sensor 34 as viewed from the axial rear R is shown. The load sensor 34 is in the shape of an annular column having a cylindrical through hole 34A through which the shaft portion 26B of the threaded shaft 26 passes. In the following description, in the load sensor 34 in the state of being assembled to the electric brake device 10, the annular surface located in the axial rear R is described as the bottom surface 34B of the load sensor 34. The load sensor 34 is assembled to the housing 22 in a state in which its central axis is located on the rotation axis O of the threaded shaft 26 through which the shaft portion 26B passes through the through hole 34A. That is, the load sensor 34 is assembled to the housing 22 in a manner in which the bottom surface 34B is located on the orthogonal plane of the rotation axis O of the threaded shaft 26.

[0038] Three first terminals 35 for connecting the circuit in the sensor to the outside are provided on the bottom surface 34B of the load sensor 34. The load sensor 34 outputs a signal corresponding to the detected pressing load to the first terminal 35. In the present embodiment, such a first terminal 35 corresponds to the output portion. Each first terminal 35 is an electrode plate in the shape of a ring centered at the intersection P of the rotation axis O and the orthogonal plane of the rotation axis O where the bottom surface 34B is located. The three first terminals 35 are arranged in a concentric circle shape. That is, each first terminal 35 is formed into a ring shape arranged centered at the rotation axis O. In addition, the three first terminals 35 are respectively a power terminal on the positive side, an output terminal for the detection signal, and a power terminal on the ground side.

[0039] like Figure 7 As shown, a terminal block 37 is provided at a portion of the housing 18 that is opposite to the bottom surface 34B of the load sensor 34. Three terminal holes 38 are arranged side by side in the terminal block 37. Moreover, a second terminal 36 is stored in each terminal hole 38. Each second terminal 36 is composed of a coil spring that uses a direction parallel to the rotation axis O as a telescopic direction. Each second terminal 36 is connected to the circuit substrate 20 through wiring. Moreover, each second terminal 36 is provided in the electric brake device 10 in a state where the end in the axial front F contacts each first terminal 35 of the load sensor 34, and is clamped by the load sensor 34 and the housing 18 and elastically compressed. That is, the second terminal 36 becomes an elastic part that is elastically compressed in a state where the load sensor 34 and the housing 18 are assembled. In addition, in the following description, the terminal block 37 in a state where each terminal hole 38 stores the second terminal 36 is recorded as a housing side terminal part 42.

[0040] The first terminal 35 and the second terminal 36 are electrically connected by contact. And, thereby, the first terminal 35 as an output part for outputting a detection signal of the load sensor 34 is electrically connected to the circuit substrate 20 provided with the CPU 21 as a control part. That is, in this embodiment, the second terminal 36 corresponds to the part that electrically connects the first terminal 35 as an output part and the CPU 21 as a control part, that is, the connection part.

[0041] <Assembly of the housing and casing>

[0042] When manufacturing the electric brake device 10, the components of the caliper portion 12, that is, the load sensor 34, the linear motion conversion mechanism 25, and the piston 23 are assembled to the housing 22. Then, the housing 22 and the housing 18 are assembled by fixing the assembled components to the housing 18.

[0043] Reference Figure 8 to Figure 10, the assembly order of the housing 22 to the outer shell 18 is described. In this assembly, the parts of the caliper part 12 are assembled in advance, and the transmission mechanism 14 and the outer shell side terminal part 42 are assembled to the outer shell 18. In addition, the electric motor 13, the cover 19, and the circuit board 20 can be assembled to the outer shell 18 before or after the caliper part 12 is assembled.

[0044] In addition, in the present embodiment, the assembling operation is performed in a state where the caliper portion 12 is fixed and the housing 18 is held as described below. That is, the rotation axis O of the third gear 17 is maintained on the rotation axis O of the threaded shaft 26, and the housing 18 is allowed to rotate about the rotation axis O and to move linearly in the axial direction.

[0045] When assembling the housing 18 and the shell 22, first Figure 8 As shown, the housing 18 is moved in the axial direction until the distance between the fitting protrusion 39 of the threaded shaft 26 and the fitting recess 41 is close to a certain extent. Then, the phase of the fitting protrusion 39 and the fitting recess 41 is matched. That is, the housing 18 is rotated so that the rotation phase of the fitting protrusion 39 around the rotation axis O becomes a phase that can be inserted into the fitting recess 41. Next, as shown in FIG. Fig. 9 As shown, the housing 18 is moved axially forward F until a portion of the fitting protrusion 39 is inserted into the fitting recess 41. Fig.10 As shown, the housing 18 is rotated again about the rotation axis O to match the phase of the housing 18 with the housing 22. Thereafter, the housing 18 is moved to a position where it contacts the housing 22, and then the housing 18 and the housing 22 are fixed.

[0046] In addition, at least one of the fitting protrusion 39 and the fitting recess 41 may be chamfered. By chamfering, the phase shift between the fitting protrusion 39 and the fitting recess 41 can be absorbed, so that the phase matching becomes easy.

[0047] <Effects of implementation method>

[0048] The first terminal 35 provided on the bottom surface 34B of the electric brake device 10 of the present embodiment is in contact with the second terminal 36 provided on the housing 18. And, by this contact, the first terminal 35 and the second terminal 36 are electrically connected. The first terminal 35 is in the shape of a ring whose center is located on the rotation axis O of the threaded shaft 26. Thus, even if the rotation phase of the load sensor 34 around the rotation axis O changes, the electrical connection between the first terminal 35 and the second terminal 36 can be maintained. Therefore, when the load sensor 34 is assembled to the housing 22, the phase matching of the load sensor 34 is not required. Therefore, the assembly operation of the load sensor 34 to the housing 22 becomes easy, and the assembly operation of the caliper part 12 becomes easy.

[0049] In addition, in the electric brake device 10 of the present embodiment, the first terminal 35 and the second terminal 36 are electrically connected by the contact between the second terminal 36 and the planar first terminal 35 located on the plane orthogonal to the rotation axis O. In such an electric brake device 10, in a state where the fitting recess 41 of the third gear 17 fits a part or all of the fitting protrusion 39 of the threaded shaft 26, even if the housing 18 and the case 22 are relatively rotated around the rotation axis O, there is no interference with the first terminal 35 and the second terminal 36. Therefore, the phase of the fitting protrusion 39 of the threaded shaft 26 with respect to the fitting recess 41 of the third gear 17 can be matched by the relative rotation of the housing 18 and the case 22. Therefore, the assembly work of the housing 18 and the case 22 is also facilitated.

[0050] In addition, in the electric brake device 10 of the present embodiment, the second terminal 36 is formed by a coil spring. Moreover, the second terminal 36 is provided in a state of being clamped and elastically compressed by the load sensor 34 and the housing 18. Therefore, even if the distance between the load sensor 34 and the terminal block 37 changes slightly, the contact between the second terminal 36 and the first terminal 35 can be maintained. Therefore, when the housing 22 or the like is deformed when the braking force is generated, it is not easy to cut off the electrical connection between the first terminal 35 and the second terminal 36. In addition, since the allowable range of the distance between the load sensor 34 and the terminal block 37 to which the first terminal 35 and the second terminal 36 can be electrically connected is expanded, the dimensional tolerance and assembly tolerance of the components of the electric brake device 10 can be expanded.

[0051] <Other embodiments>

[0052] This embodiment can be implemented with modifications as follows. This embodiment and the following modifications can be implemented in combination with each other within the range that there is no technical contradiction.

[0053] The number of the first terminals 35 and the second terminals 36 may be changed arbitrarily. Fig.11 A configuration example of the load sensor 34 in which four first terminals 35 are provided is shown.

[0054] ·like Fig.12 As shown in the example, the first terminal 35 may be in an arc shape. In this case, the range of the rotation phase of the load sensor 34 that can be allowed is also expanded when assembled to the housing 22. Therefore, even if the first terminal 35 is in an arc shape, the assembly work of the caliper part 12 becomes easy.

[0055] ·like Fig.13 As shown, the second terminal 36 may also be formed by a contact member 43 in contact with the first terminal 35 and a spring 44 for pressing the contact member 43. Fig.13In the case of , the spring 44 is provided in a compressed state in the terminal hole 38. And, the contact 43 is pressed axially forward F by the spring 44. In this case, the second terminal 36 as the connecting portion is constituted by the contact 43 as the contact portion and the spring 44 as the elastic portion.

[0056] As the spring of the second terminal 36, a spring other than a coil spring may be used. Fig.14 A configuration example of the second terminal 36 using a leaf spring is shown.

[0057] A terminal without a spring may be used as the second terminal 36. That is, the contact portion may be configured without an elastic portion that is elastically compressed in the state where the load sensor 34 and the housing 18 are assembled.

[0058] ·like Fig.15 As shown in FIG. 1 , a step difference S may be provided between the surfaces of the two adjacent first terminals 35. That is, at least one of the plurality of non-contact portions may be arranged at a position different from the other contacted portions in the extension direction of the rotation axis O. When the two adjacent first terminals 35 are arranged on the same plane, there is a possibility that the second terminal 36 contacts a first terminal 35 different from the first terminal 35 that is originally in contact. Fig.15 By providing the step S between the installation surfaces of the first terminals 35 in this manner, such erroneous contact of the second terminals 36 is less likely to occur.

[0059] ·like Fig.16 As shown, a plurality of first terminals 35 each having an arc shape may be arranged at positions offset around the rotation axis O. In such a case, erroneous contact of the second terminal 36 as described above is unlikely to occur.

[0060] The load sensor 34 and the first terminal 35 may be independent. For example, the first terminal 35 may be provided in the housing 18, and the load sensor 34 and the first terminal 35 may be electrically connected by wiring.

[0061] The first terminal 35 may be provided in the housing 18, and the second terminal 36 may be provided in the load sensor 34. That is, the output portion stored in the case 22 may have a contact portion, and the connection portion stored in the housing 18 may have a contacted portion.

[0062] The caliper part 12 may be assembled to the housing 18 while the housing 18 is fixed and the caliper part 12 is held rotatably and axially movable. Alternatively, the assembly may be performed while one of the housing 18 and the caliper part 12 is held rotatably and the other is held axially movable. Alternatively, the assembly may be performed while both the housing 18 and the caliper part 12 are held rotatably and axially movable.

[0063] The linear motion conversion mechanism 25 may be configured such that the nut 27 is a rotating member and the screw shaft 26 is a linear motion member. In this case, the fitting projection 39 is provided on the nut 27 as the rotating member.

[0064] The fitting recessed portion 41 may be provided on the rotating member of the linear motion conversion mechanism 25 , and the fitting protruding portion 39 may be provided on the third gear 17 .

[0065] The fitting protrusion 39 and the fitting recess 41 may be in shapes other than the quadrangular prism shape as long as they are shaped to transmit rotational motion by fitting.

[0066] The number of gears of the transmission mechanism 14 may be changed. In addition, the transmission mechanism 14 may adopt a mechanism other than a reduction gear mechanism such as a winding transmission mechanism.

[0067] A drum-shaped rotating body may be used as the rotating body that receives the pressure of the friction materials 30 and 31 .

Claims

1. An electric brake device, wherein the rotation of an electric motor is transmitted to a direct-acting conversion mechanism through a transmission mechanism, wherein the direct-acting conversion mechanism converts the rotational motion transmitted by the transmission mechanism from the rotational motion of a rotating part into the linear motion of a direct-acting part, and a friction member linked to the linear motion of the direct-acting part is pressed against a rotating body rotating together with a wheel to generate a braking force on the wheel, wherein the electric brake device comprises: a sensor for detecting a pressing load of the friction member on the rotating body and outputting a signal corresponding to the detected pressing load to an output unit; A connecting portion electrically connecting the output portion to a control portion for controlling the electric brake device; A housing storing the sensor, the output unit and the direct-acting conversion mechanism; and The housing stores the transmission mechanism, the control unit and the connection unit. In the electric brake device in which the rotating portion of the direct-acting conversion mechanism is mechanically engaged with the transmission mechanism when the housing and the casing are assembled, The rotating part is coaxially arranged with the rotation axis of the transmission mechanism, and the transmission mechanism is directly engaged with the rotating part. One of the output portion and the connection portion has a contacted portion, the contacted portion is formed in a circular ring shape or an arc shape and is arranged around the rotation axis. The other of the output portion and the connection portion includes a contact portion that electrically connects the output portion and the connection portion by coming into contact with the contacted portion in a state in which the housing and the casing are assembled.

2. The electric brake device according to claim 1, wherein: The contact portion includes an elastic portion that is elastically compressed when the sensor and the housing are assembled.

3. The electric brake device according to claim 1, wherein: One of the output portion and the connection portion includes a plurality of the contacted portions, and at least one of the plurality of contacted portions is disposed at a position different from the other contacted portions in the direction of the rotation axis.

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