JP2017106279A - Driving power transmission mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a driving power transmission mechanism that can have a terminal member easily stored in a storage part.SOLUTION: A driving power transmission mechanism comprises a drive part having a shaft part 21, a drum 3 rotating by rotation of the shaft part 21, and a wire 41 provided with a terminal member 41b at a terminal part. The drum 3 has a shaft hole 31 in which the shaft part 21 can be fitted and a terminal member storage part 32 having a storage space capable of storing the terminal member 41b, and the terminal member storage part 32 has a first opening part which is open facing one axis-X directional face of the drum 3 and has opening area smaller than projection area of the terminal member 41b, and a second opening part which is formed at a shaft-side wall part 34, and communicates with the first opening part and forms an opening capable of storing the terminal member 41b in the storage space together with the first opening part.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a driving force transmission mechanism for winding and feeding a wire by a drum driven by a driving force of a driving unit and transmitting the driving force to an operation target via the wire.

  A driving force transmission mechanism is known in which a drum is driven by a driving source to wind and feed a wire and transmit the driving force of the driving source to a driving target through the wire. As such a driving force transmission mechanism, for example, a window regulator described in Patent Document 1 is known. This window regulator has a locking hole (accommodating portion) for locking the end of the wire on at least one end surface of the drum, an annular wire guide groove capable of guiding the wire to the winding groove, and an outer periphery of the guide groove. And a flange that regulates outward spreading and detachment due to loosening of the guided wire.

  In this window regulator, when the terminal member provided at the end of the wire is assembled to the wire terminal locking hole provided in the drum, the terminal member is detached from the drum by loosening in an attempt to restore the linear shape. It can be suppressed by the buttocks.

JP-A-9-242420

  In the window regulator described in Patent Document 1, even if the terminal member is assembled in a state where the terminal member is not properly accommodated in the accommodating portion, dropping of the terminal member is restricted by the drum cover. However, it is not possible to prevent the terminal member from being assembled in a state where it is not correctly stored in the storage portion.

  Then, the objective of this invention is providing the driving force transmission mechanism which can accommodate a terminal member in an accommodating part easily.

  The driving force transmission mechanism of the present invention has a shaft portion, a drive portion that rotationally drives the shaft portion, a drum that rotates by rotation of the shaft portion, a terminal member at an end portion, and one end to be operated. The other end is connected to the drum, and the driving force transmission mechanism includes a wire that is wound and fed out of the drum in accordance with the rotation of the drum. A shaft hole into which the shaft portion can be fitted, and a terminal member housing portion having a housing space capable of housing the terminal member, wherein the terminal member housing portion is the terminal member. A projecting area of the terminal member from the direction in which the terminal member is inserted into the housing space, and is open to face one side in the axial direction of the drum. Forming a first opening having a smaller opening area and the shaft hole And a second opening that communicates with the first opening and forms an opening capable of accommodating the terminal member in the accommodation space together with the first opening. Has an abutting portion that suppresses the terminal member that has moved to the second opening portion from coming into contact with the terminal member accommodating portion when inserted into the shaft hole.

  According to the driving force transmission mechanism of the present invention, the terminal member can be easily accommodated in the accommodating portion.

1 is an overall view showing a driving force transmission mechanism of an embodiment of the present invention. It is a disassembled perspective view which shows the drum and shaft part which are used for the driving force transmission mechanism of FIG. It is a top view of the drum used for the driving force transmission mechanism of FIG. FIG. 4 is a perspective view of the drum of FIG. 3. FIG. 4 is a sectional view taken along line AA in FIG. 3. It is a perspective view which shows the state before attaching a wire to the drum of FIG. FIG. 4 is a top view showing a state where a wire is attached to the drum of FIG. 3. It is the BB sectional view taken on the line of FIG. FIG. 4 is a partially enlarged view showing a state before a wire is attached to the drum of FIG. 3. It is the elements on larger scale which show the temporary placement state before fully accommodating a terminal member in the terminal member accommodating part of the drum of FIG. It is sectional drawing which shows the state in which the terminal member protruded on the insertion path | route of an axial part is accommodated in accommodation space by the insertion to the drum of an axial part.

  Hereinafter, a driving force transmission mechanism according to an embodiment of the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, the driving force transmission mechanism 1 of the present embodiment has a shaft portion 21 (see FIG. 2), and is rotated by rotation of the shaft portion 21 and a driving portion 2 that rotationally drives the shaft portion 21. End member 41a, 41b, 42a, 42b is provided at the end, one end 41a, 42a is connected to the operation target C, the other end 41b, 42b is connected to the drum 3, and the drum 3 is rotated. Correspondingly, there is provided a wire 4 that is wound and unwound on the drum 3.

  The driving force transmission mechanism 1 rotates the drum 3 through the shaft portion 21 by the driving force of the driving unit 2 and drives the operation target C by the wire 4 connected between the operation target C and the drum 3. . Although the use of the driving force transmission mechanism 1 is not particularly limited, in this embodiment, as shown in FIG. 1, a window regulator that raises and lowers the window glass of the vehicle (hereinafter, the driving force transmission mechanism 1 is also referred to as a window regulator 1). Will be described as an example. The window regulator 1 is fixed to a vehicle door by a bracket (not shown).

  As shown in FIG. 1, the window regulator 1 of this embodiment includes a drive unit 2 provided on the lower end side of the window regulator 1, a drum 3 connected to the drive unit 2, and an upper end side of the window regulator 1. The provided direction changing member 5, the guide rail G extending between the drive unit 2 and the direction changing member 5, and the carrier plate (hereinafter referred to as the operation target C) provided to be slidable along the guide rail G The operation target C is also called a carrier plate C), and a wire 4 that connects the carrier plate C and the drum 3 to each other. The wire 4 is changed in direction by at least one direction changing member 5 and connected to the carrier plate C from both sides in the moving direction of the carrier plate C (vertical direction in FIG. 1). In the present embodiment, as shown in FIGS. 1 and 2, the wire 4 includes a first wire (for example, a lifting wire) 41 and a second wire (a lowering wire) 42, and the first wire Each of 41 and the second wire 42 is led out from the drum 3 and wired in the window regulator 1. A window glass (not shown) is connected to the carrier plate C.

  In the present embodiment, as shown in FIG. 1, the first wire 41 led out from the drum 3 extends from the drum 3 toward the direction changing member 5 (cable guide) and is changed in direction by the direction changing member 5. And extends toward the carrier plate C. The terminal member 41 a on one end side of the first wire 41 is engaged with the engaging portion Ca of the carrier plate C. The second wire 42 led out from the drum 3 extends toward the carrier plate C from the side opposite to the first wire 41, and the terminal member 42 a on one end side of the second wire 42 is formed on the carrier plate C. It is engaged with the second engagement portion Cb. Each of the terminal members 41b and 42b on the other end side of the first wire 41 and the second wire 42 is attached to the drum 3 as shown in FIG. As a result, the carrier plate C and the drum 3 are connected via the first and second wires 41 and 42, and when the drum 3 rotates forward and backward by driving of the driving unit 2, the carrier plate C along the guide rail G Can be reciprocated (moved up and down). By this reciprocation, the window glass fixed to the carrier plate C moves up and down. The shape of the terminal members 41a, 42a, 41b, 42b is not particularly limited as long as it can be locked to the drum 3 or the carrier plate C, and is substantially cylindrical, substantially polygonal, substantially spherical, substantially frustoconical, or these It can be a combination of shapes.

  In addition to the window regulator, the driving force transmission mechanism 1 may be another mechanism capable of driving the operation target by a wire connected to the drum, such as another opening / closing body driving mechanism such as a power slide door. Further, the driving force transmission mechanism 1 is not limited to the shape or structure shown in the figure. For example, the position of the driving unit 2, the position and number of the direction changing member 5, etc. It can be appropriately changed according to the structure of the force transmission mechanism 1. Further, the operation target C is not limited to the carrier plate, and may be any tangible object that can be operated by the wire 4.

  The drive unit 2 is a part that rotates the shaft part 21 and generates a driving force that rotates the drum 3. The drive unit 2 includes a drive force generator such as an electric motor. In the present embodiment, as shown in FIG. 1, the drive unit 2 houses the electric motor 22, a shaft unit 21 connected to the output shaft of the electric motor 22 via a reduction mechanism (not shown), and the drum 3. And a drum housing 23. The driving unit 2 is not limited to the shape and structure shown in the drawing as long as the drum 3 can be rotated.

  The shaft portion 21 is configured to rotate by the driving force of the driving portion 2, is fitted to the drum 3, and rotates the drum 3 by the rotation of the shaft portion 21. The shaft portion 21 is connected to the drum 3 by fitting into a shaft hole 31 (see FIG. 2) of the drum 3 to be described later. In the present embodiment, as shown in FIG. 2, the shaft portion 21 is provided with a fitting portion 21 a that fits into the shaft hole 31 of the drum 3, and an output shaft of the electric motor 22 that is provided on one end side of the shaft portion 21. And a flange portion 21 c provided on the other end side of the shaft portion 21. In this embodiment, the fitting portion 21a is unevenness provided on the outer periphery of the cylindrical body, has a predetermined outer diameter corresponding to the diameter of the shaft hole 31, and a plurality of fitting teeth are formed on the outer peripheral portion. The shaft portion 21 is not limited to a gear-like body as long as the shaft portion 21 can be fitted into the shaft hole 31 of the drum 3, and the shape and diameter thereof are not particularly limited.

  The drum 3 rotates around the central axis X (see FIG. 2) by the rotation of the shaft portion 21, and moves the operation target C by winding and unwinding the wire 4 connected to the drum 3. 2 to 5, the drum 3 can accommodate a shaft hole 31 in which the shaft portion 21 can be fitted around the central axis X of the drum 3 and a terminal member 41 b of the wire 4. Terminal member housing portion 32 having a large housing space S. In the present embodiment, the drum 3 is a substantially cylindrical member in which a shaft hole 31 is formed along the extending direction of the central axis X, as shown in FIGS. Has a wire accommodating portion 33 around which the wire 4 is wound. In this embodiment, the wire accommodating part 33 is a spiral groove formed on the outer periphery of the drum 3, and the wire 4 is wound spirally.

  In this embodiment, as shown in FIGS. 2 to 5, the terminal member accommodating portion 32 is located on the end surface F side of the drum 3, and in the direction perpendicular to the central axis X, the shaft hole 31 and the wire accommodating portion 33. It is provided at a position between. The terminal member accommodating portion 32 is formed with an accommodating space S having a size that can accommodate the terminal member 41 b of the wire 4. The terminal member 41 b of the wire 4 is attached to the drum 3 by being accommodated in the accommodating space S. 2 to 5, the terminal member accommodating portion 32 on one end surface F of the drum 3 is illustrated, but the accommodating portion for accommodating the terminal member is also provided on the other end surface of the drum 3. Below, the terminal member accommodating part 32 in the one end surface F side of the drum 3 and the terminal member 41b accommodated in the said terminal member accommodating part 32 are mentioned as an example, and are demonstrated. In addition, the terminal member accommodating part and terminal member 42b provided in the other end surface of the drum 3 may have the same shape and structure as the terminal member accommodating part 32 and the terminal member 41b described below, or different shapes and structures. Also good.

  As shown in FIGS. 2 to 5, the terminal member housing portion 32 of the present embodiment includes a locking portion 32 a that locks the terminal member 41 b and a central axis X of the drum 3 (hereinafter also simply referred to as an axis X). A first opening A1 that opens toward one side of the direction, communicates with the accommodation space S, and has an opening area smaller than the projected area of the terminal member 41b from the direction in which the terminal member 41b is inserted into the accommodation space S; The second opening A2 is formed in the shaft side wall portion 34 forming the shaft hole 31, communicates with the first opening A1, and forms an opening capable of accommodating the terminal member 41b in the accommodation space S together with the first opening A1. And have.

  The accommodation space S of the terminal member accommodation portion 32 is a space in which the terminal member 41 b of the wire 4 is accommodated when the wire 4 is assembled to the drum 3. In this embodiment, the accommodation space S is formed as a space penetrating in the axis X direction from the first opening A1 side formed on the one end face F side of the drum 3 toward the other end face ( As long as the terminal space 41b can be accommodated, the accommodation space S may be a space formed by a recessed portion that does not penetrate. The accommodation space S is a space larger than the volume of the terminal member 41b. When the terminal member 41b is accommodated, the accommodation space S is arranged on the outer peripheral side of the drum 3 by the wire lead-out portion 35 described later due to the rigidity of the wire 4. You may be comprised so that the inner wall of the accommodation space S and the terminal member 41b may contact | abut.

  The locking part 32a is a part where the terminal member 41b of the wire 4 is locked. When the drum 3 rotates in one direction, the terminal member 41b of one wire 41 is locked to the locking portion 32a, and the one wire 41 is wound around the drum 3 to apply a pulling operation to the operation target C. . In this embodiment, the locking portion 32a is configured as a wall portion that can come into contact with the proximal end side of the terminal member 41b. However, the locking portion 32a has a shape as long as the terminal member 41b can be locked. The structure is not limited to that illustrated.

  Moreover, in this embodiment, the drum 3 has the wire derivation | leading-out part 35, as FIG. 3 shows. The wire 41 extending from the terminal member 41 b locked to the locking portion 32 a can be led out to the wire housing portion 33 provided on the outer periphery of the drum 3 by the wire lead-out portion 35. The wire lead-out portion 35 is provided between the wire housing portion 33 and the terminal member housing portion 32, and the end side of the wire 41 is led out from the terminal member housing portion 32 to the outer periphery of the drum 3 as shown in FIG. The In this embodiment, as shown in FIGS. 7 and 9, the wire lead-out portion 35 has a width that allows the wire 41 to be led out, and is formed in a groove shape on one end face F of the drum 3. As shown in FIG. 6, the portion of the wire lead-out portion 35 connected to the wire housing portion 33 is curved near the outer periphery of the drum 3, and smoothly guides the wire 41 to the wire housing portion 33.

  As shown in FIGS. 3 and 7, the first opening A <b> 1 is an opening that faces one side in the axis X direction of the drum 3 (in the present embodiment, on one end face F side). More specifically, as shown in FIGS. 3 and 7, the first opening A <b> 1 is a portion that opens when the accommodation space S is viewed from the one end face F side of the drum 3 in the axis X direction. It is. In addition, 1st opening part A1 is shown with the dashed-two dotted line for convenience of explanation. In the present embodiment, as shown in FIGS. 3 to 7, the first opening A <b> 1 is partitioned on the radially inner side of the drum 3 by a virtual circle having substantially the same diameter as the shaft side wall 34 of the shaft hole 31. The outer side in the radial direction of the drum 3 is partitioned by an edge of a covering portion 36 described later. Further, the first opening A1 is a part of the opening edge of the first opening A1 where the locking portion 32a that the base end of the terminal member 41b is locked is located on one side in the extending direction of the wire 41. The other end in the extending direction of the wire 41 is partitioned by the back side wall portion 32b of the terminal member housing portion 32 facing the locking portion 32a.

  In this embodiment, the opening area of the first opening A1, that is, the opening area when the first opening A1 is viewed from the axis X direction of the drum 3, is accommodated by the terminal member 41b as shown in FIG. It is smaller than the projected area of the terminal member 41b when projected from the direction in which it is inserted into the space S (in this embodiment, the area of the terminal member 41b on the sheet of FIG. 7). That is, the first opening A1 is formed in such a size that the terminal member 41b accommodated in the accommodating space S cannot be extracted when attempting to extract in the axis X direction of the drum 3.

  As shown in FIGS. 4 and 5, the second opening A <b> 2 is an opening formed in the shaft side wall portion 34 that forms the shaft hole 31. More specifically, as shown in FIGS. 4 and 5, the accommodation space S and the space inside the shaft hole 31 are formed to communicate with each other. In addition, 2nd opening part A2 is shown with the dashed-two dotted line for convenience of explanation similarly to 1st opening part A1. As can be understood from FIGS. 3 to 7, the first opening A <b> 1 and the second opening A <b> 2 communicate with each other to form one insertion opening into which the terminal member 41 b can be inserted toward the accommodation space S. In the present embodiment, the second opening A2 is formed to be larger than the projected area in the insertion direction of the terminal member 41b, but is formed by the first opening A1 and the second opening A2. As long as the terminal member 41b can be inserted from the insertion opening, the second opening A2 may be smaller than the projected area in the insertion direction of the terminal member 41b.

  As described above, since the first opening A1 and the second opening A2 are formed in the terminal member accommodating portion 32, as shown in FIGS. 6 and 9, in a state before the shaft portion 21 is inserted. The terminal member 41b can be inserted toward the accommodation space S from the opened second opening A2 side (in the radial direction of the drum 3). In this embodiment, since the first opening A1 and the second opening A2 communicate with each other on the radially inner side of the drum 3 in the terminal member housing portion 32, the terminal member 41b is placed in the housing space S. It becomes easy to accommodate.

  Further, as shown in FIGS. 7 and 8, when the shaft portion 21 is inserted into the shaft hole 31, the terminal member 41 b moved to the second opening A <b> 2 comes into contact with the terminal portion 41 from the terminal member housing portion 32. A contact portion 21d that suppresses separation is provided. In this embodiment, the contact portion 21d is a part of the outer peripheral surface (fitting portion 21a) of the shaft portion 21 and is shown in FIGS. 7 and 8 when the shaft portion 21 is inserted into the shaft hole 31. As described above, the second opening A2 connected from the accommodation space S to the space in the shaft hole 31 is closed. Therefore, the terminal member 41b accommodated in the accommodation space S abuts against the abutting portion 21d of the shaft portion 21 even when trying to move to the second opening A2 side, that is, the radially inner side of the drum 3, and thus the terminal member 41b. From the second opening A2 side is restricted. Therefore, in this embodiment, before inserting the shaft part 21 into the shaft hole 31, as described above, it is easy to attach the terminal member 41b to the terminal member accommodating part 32 and after attaching the terminal member 41b. Is easily suppressed from the second opening A2 side of the terminal member 41b.

  In the present embodiment, as shown in FIG. 7, after the shaft portion 21 is fitted in the shaft hole 31, the second opening A2 is closed and the first opening A1 is opened. Yes. In the present embodiment, as shown in FIG. 8, the shaft portion 21 is provided with a flange portion 21 c and the first opening A <b> 1 is substantially closed, but the flange portion 21 c may not be provided. As described above, the opening area of the first opening A1 is smaller than the projected area of the terminal member 41b, and the terminal member 41b is prevented from being detached from the first opening A1 side. More specifically, as shown in FIG. 7 and FIG. 8, a part of the accommodation space S on the outer side in the radial direction of the drum 3 is located on one side (end face F side) in the axis X direction of the accommodation space S. A covering portion 36 is formed to cover the. With this covering portion 36, the terminal member 41 b accommodated in the accommodating space S is partially covered on one side in the axis X direction of the drum 3. Therefore, even if it is going to move to the one side of the drum 3 in the axis X direction, the terminal member 41 b is caught by the covering portion 36 and is prevented from being detached from the terminal member accommodating portion 32. Thus, in this embodiment, the separation of the terminal member 41b is suppressed by the covering portion 36 and the contact portion 21d of the shaft portion 21.

  Next, an example of assembling the wire 41 to the drum 3 will be described. In addition, the assembly | attachment of the wire 41 demonstrated below is an example to the last, and can also be assembled | attached by methods other than the method demonstrated below.

  Before attaching the drum 3 to the drive unit 2, first, the wire 4 and the shaft portion 21 are attached to the drum 3. In the present embodiment, as shown in FIG. 2, the wire 4 is first attached to the drum 3, and then the shaft portion 21 is attached. The direction in which the wire 41 is assembled to the drum 3 is not particularly limited. For example, as shown in FIGS. 6 and 9, the terminal member 41 b of the wire 41 is placed inside or above the shaft hole 31 (in FIG. 9, the front side in the drawing). From the position, it is moved toward the accommodation space S through the second opening A2 side. The second opening A2 is formed by notching the shaft side wall 34 of the shaft hole 31, and the first opening A1 communicates with the second opening A2. Therefore, the terminal member 41b faces the housing space S. A relatively wide opening is formed during insertion. Therefore, the terminal member 41b can be easily inserted into the accommodation space S. Further, since the first opening A1 and the second opening A2 communicate with each other, not only the direction from the inner side in the radial direction of the drum 3 to the outer side but also the end member 41b from obliquely above the end surface F of the drum 3 Can be inserted. The terminal member 41b is inserted from the direction in which the extending direction of the wire 41 is perpendicular to the second opening A2 (from the direction in which the wire 41 is rotated about 90 ° counterclockwise in FIG. 9). Also good. Thus, since 1st opening part A1 and 2nd opening part A2 are connected, the terminal member 41b can be inserted in the accommodation space S by various methods.

  As shown in FIG. 7, when the terminal member 41 b is accommodated in the accommodating space S, after the wire 41 is wound around the wire accommodating portion 33 on the outer periphery of the drum 3, the wire 42 is wound around the drum 3 in the same or different manner. The drum 3 is placed in the drum housing 23 by winding. Thereafter, the shaft portion 21 is inserted into the shaft hole 31 of the drum 3 and assembled to the drive portion 2. When the shaft portion 21 is inserted into the shaft hole 31, the second opening A2 is closed as shown in FIGS. 7 and 8, and movement of the terminal member 41b inward in the radial direction is restricted. Therefore, the terminal member 41 b cannot be detached from the terminal member accommodating portion 32 in a state where the drum 3 is attached to the driving portion 2. In addition, the first opening A1 is open, but the opening area of the first opening A1 is smaller than the projected area of the terminal member 41b, and further, the covering portion 36 causes the drum 3 of the terminal member 41b to move in the axis X direction. Therefore, the terminal member 41b cannot be detached from the terminal member accommodating portion 32. Therefore, the driving force transmission mechanism 1 of the present embodiment has a structure in which the terminal member 41b can be easily inserted into the accommodation space S of the terminal member accommodation portion 32 and cannot be detached from the terminal member accommodation portion 32.

  In addition to the above-described assembling methods, the following assembling methods can also be used. For example, as shown in FIG. 10, before the terminal member 41b is completely inserted into the accommodation space S, the outer periphery of the terminal member 41b is the edge on the radially inner side of the covering portion 36 that becomes the side edge of the first opening A2. The wire 41 is temporarily placed in contact with the elasticity of the wire 41, and the wire 41 is wound around the wire housing portion 33. Thereafter, the terminal member 41b may enter the housing space S by pressing the terminal member 41b toward the housing space S in the axis X direction. In the present embodiment, the drum 3 has an inclined surface 37 that is connected to the opening end AE and is inclined so that the terminal member 41b is guided to the terminal member accommodating portion 32, as shown in FIG. ing. In FIG. 9, the region showing the inclined surface 37 is surrounded by a two-dot chain line for convenience of explanation. Therefore, even if the terminal member 41b is temporarily placed before entering the accommodation space S as described above, the terminal member 41b is moved into the accommodation space S due to the wire 41 being wound and tension applied. The inclined surface 37 is slid down from the state before entering into the fully accommodated state. Therefore, the terminal member 41b is easily guided into the accommodation space S, and the terminal member 41b can be more easily accommodated in the terminal member accommodating portion 32. In addition, as long as the inclined surface 37 inclines so that the terminal member 41b may be guided toward the accommodation space S, the direction of inclination will not be specifically limited. In the present embodiment, as shown in FIG. 9, the inclined surface 37 is formed at a corner portion connecting the locking portion 32 a and the shaft side wall portion 34, and the inclined surface 37 is directed outward in the radial direction of the drum 3. And the distance of the surface of the inclined surface 37 with respect to one end surface F of the drum 3 is increased toward the tip end side in the axial direction of the wire 41 (that is, the back side of the accommodation space S in the axis X direction (see FIG. 5 is inclined downward).

  In the present embodiment, as shown in FIG. 9, the drum 3 has a guide portion 38 that guides the wire 41 extended from the terminal member 41 b to a state where the wire 41 is accommodated in the wire lead-out portion 35. . In FIG. 9, a region indicating the guide portion 38 is surrounded by a two-dot chain line for convenience of explanation. The guide portion 38 is provided along at least one side edge (a side edge on the inner side in the radial direction of the drum 3) of both side edges of the wire lead-out portion 35, and toward the bottom of the groove-shaped wire lead-out portion 35. It is inclined. When the terminal member 41 b is accommodated in the accommodation space S by the guide portion 38, the wire portion of the wire 41 on the terminal member 41 b side is guided by the guide portion 38 and smoothly guided to the wire lead-out portion 35. The Therefore, the terminal member 41b can be easily attached to the terminal member accommodating portion 32.

  Further, in the driving force transmission mechanism 1 of the present embodiment, the terminal member 41b is provided with a curved surface, and the terminal member 41b protruding from the second opening A2 is inserted into the distal end portion when the shaft portion 21 is inserted into the shaft hole 31. It is comprised so that it may be accommodated in the terminal member accommodating part 32 by contact | abutting 21e. In this case, as shown in FIG. 11, even when the terminal member 41 b is not completely accommodated in the accommodation space S, when the terminal member 41 b has a curved surface, the shaft portion 21 is inserted into the shaft hole 31. In this case, the outer peripheral portion of the terminal member 41b is pushed toward the inside of the accommodation space S by the shaft portion 21, and the terminal member 41b is accommodated in the accommodation space S. Therefore, the assembly of the terminal member 41b in an incomplete state is suppressed. In addition, if the terminal member 41b protrudes further to the center side of the shaft hole 31 than in FIG. 11, the terminal member 41b prevents the shaft portion 21 from being inserted into the shaft hole 31. It is possible to prevent the drum 3 and the drive unit 2 from being assembled in a state where the member 41b is not housed in the terminal member housing portion 32. In FIG. 11, only the terminal member 41b is provided with a curved surface. However, the distal end portion 21e of the shaft portion 21 (in this embodiment, the distal end portion 21e of the fitting portion 21a) may be provided with a curved surface. The curved surface should just be provided in at least one of the front-end | tip part 21e of the part 21, and the terminal member 41b. The curved surface of the terminal member 41b has a substantially circular cross section perpendicular to the extending direction of the wire 41. When the shaft portion 21 is inserted into the shaft hole 31, the terminal member 41b moves to the accommodation space S side. Any curved surface to which such a component force is applied may be used. Similarly, when a curved surface is provided at the distal end portion 21 e of the shaft portion 21, when the distal end portion 21 e of the shaft portion 21 contacts the terminal member 41 b and is inserted into the shaft hole 31, the terminal member 41 b is accommodated in the housing space S. Any curved surface to which a component force that moves to the side is applied may be used.

1 Driving force transmission mechanism (window regulator)
2 Driving portion 21 Shaft portion 21a Fitting portion 21b Connection portion 21c Flange portion 21d Abutting portion 21e Tip portion of shaft portion 22 Electric motor 23 Drum housing 3 Drum 31 Shaft hole 32 Terminal member housing portion 32a Locking portion 32b Back side wall portion 33 Wire accommodating portion 34 Shaft side wall portion 35 Wire lead-out portion 36 Cover portion 37 Inclined surface 38 Guide portion 4 Wire 41 First wire (lifting wire)
42 Second wire (wire for lowering)
41a, 41b, 42a, 42b Terminal member 5 Direction change member AE Open end A1 First opening A2 Second opening C Operation target (carrier plate)
Ca engaging portion Cb second engaging portion F One end surface of the drum G Guide rail S Storage space X Center axis of the drum

Claims (4)

A drive unit having a shaft part and rotationally driving the shaft part;
A drum that rotates by rotation of the shaft,
A drive comprising: a terminal member provided at an end; one end connected to an operation target; the other end connected to a drum; and a wire that is wound and fed around the drum according to rotation of the drum A force transmission mechanism,
The drum is
A shaft hole formed on a central axis of the drum and into which the shaft portion can be fitted;
A terminal member housing portion having a housing space capable of housing the terminal member;
The terminal member accommodating portion is
A locking portion for locking the terminal member;
A first opening that faces one side in the axial direction of the drum, communicates with the housing space, and has an opening area smaller than a projected area of the terminal member from a direction in which the terminal member is inserted into the housing space. An opening,
A second opening that is formed in a shaft side wall forming the shaft hole, communicates with the first opening, and forms an opening capable of accommodating the terminal member in the accommodation space together with the first opening; And
The shaft portion has a contact portion that prevents the terminal member moved to the second opening portion from coming into contact with the terminal member housing portion when the shaft member is inserted into the shaft hole.
Driving force transmission mechanism. A curved surface is provided on at least one of the distal end portion of the shaft portion and the terminal member,
When the shaft portion is inserted into the shaft hole, the terminal member protruding from the second opening is brought into contact with the tip portion, and is accommodated in the terminal member accommodating portion.
The driving force transmission mechanism according to claim 1. The drum is
A wire accommodating portion provided on an outer periphery of the drum and around which the wire is wound;
A wire lead-out portion provided so that a wire extending from the terminal member locked to the locking portion can be led out to the wire housing portion;
An opening end constituting a part of an opening edge of the first opening;
An inclined surface connected to the open end and inclined so that the terminal member is guided by the terminal member accommodating portion,
The driving force transmission mechanism according to claim 1 or 2. The driving force transmission mechanism according to any one of claims 1 to 3, wherein the drum has a guide portion that guides the wire extended from the terminal member to a state where the wire is accommodated in the wire lead-out portion. .

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