This application is based on and claims priority under 35 U.S.C. § 119 to Japanese Patent Application 2022-139938, filed on Sep. 2, 2022 and Japanese Patent Application 2023-064110, filed on Apr. 11, 2023, the entire content of which is incorporated herein by reference.
This disclosure relates to a window regulator.
JP H06-26264A (Reference 1) discloses an arm-type window regulator device that raises and lowers window glass of an automobile. In this window regulator device, a door inner panel is disposed inward of a door outer panel of a vehicle body in a vehicle width direction, and a side beam is disposed between the door outer panel and the door inner panel along a front-rear direction of the vehicle body on the door outer panel. A guide rail that transfers the window glass is provided between the door outer panel and the door inner panel along the front-rear direction of the vehicle body, and a link that is movably engaged in a longitudinal direction in the guide rail is provided. Each of one end portion and a portion adjacent to the one end portion of the link is movably engaged with the guide rail, and a base plate is disposed on the door inner panel. A main arm is swingably provided on the base plate, and a sub arm parallel to the main arm is swingably provided on the side beam. A tip end portion of the main arm is pivotably connected to the link, and a tip end portion of the sub arm is pivotably connected to the link.
However, the window regulator device according to Reference 1 has a problem that an undesirable force acts on the window glass due to a deviation between a raising and lowering trajectory of the window glass and driving trajectories of the main arm and the sub arm, and that smooth raising and lowering is inhibited.
A need thus exists for a window regulator which is not susceptible to the drawback mentioned above.
According to an aspect of this disclosure, a window regulator includes: a base assembled to a vehicle; a bracket configured to support window glass; an arm member having one end side rotatably supported by the base and the other end side rotatably supported by the bracket; and a driving member configured to drive, by rotationally driving the arm member, the bracket configured to support the window glass. At least one of a rotation center axis on the one end side of the arm member and a rotation center axis on the other end side of the arm member is inclined in a vehicle front-rear direction with respect to a vehicle width direction when viewed from a vehicle upper-lower direction.
The foregoing and additional features and characteristics of this disclosure will become more apparent from the following detailed description considered with the reference to the accompanying drawings, wherein:
A “window regulator” defined in the claims is used as a concept including both of a window regulator in a state of being incorporated into an automobile (vehicle) and a window regulator in an assembled (sub-assembled) state before being incorporated into the automobile (vehicle) (both are included in the technical scope of this disclosure). “Rotate” and “pivot” may be replaced with each other (may be synonymous). “Rotation support portion (pivot support portion)” and “rotation center axis (pivot center axis)” may be replaced with each other (may be synonymous). For example, a rotation center (pivot center) of a rotation support portion (pivot support portion) may be referred to as a rotation center axis (pivot center axis).
A window regulator 1 according to the present embodiment will be described in detail with reference to
The window regulator 1 according to the present embodiment is mounted inside a door panel at a right front seat (a driver seat when a right steering wheel is used) in an automobile (vehicle) to raise and lower (opens and closes) window glass W at the right front seat (the window glass W is illustrated in
The window regulator 1 includes a base (base plate) 10, a motor unit (driving member) 20, a bracket (lift arm bracket) 30, a bell crank (shoe member) 40, a first arm (main arm, lift arm, and arm member) 50, and a second arm (sub arm, EQ rod, and arm member) 60.
The base 10 is a basic component of the window regulator 1 that directly or indirectly supports the motor unit 20, the bracket 30, the bell crank 40, the first arm 50, the second arm 60, and other various components. The base 10 is assembled to the automobile (vehicle) as a basic component of the window regulator 1 in an assembled (sub-assembled) state (assembled with reference to the base 10). As illustrated in
The motor unit 20 includes a motor and a built-in gear mechanism (gear mechanism) that transmits a rotational driving force of the motor to the first arm 50 (a driven gear 53 to be described later). As illustrated in
The bracket 30 is a channel member extending in the front-rear direction (extending direction). Two insertion holes 31 are formed on both sides of the bracket 30 in the front-rear direction, and the window glass W (
As illustrated in
One end side of the first arm 50 is rotatably supported by the base 10, and the other end side of the first arm 50 is rotatably supported by the bracket 30 (bell crank 40). As illustrated in
One end side of the second arm 60 is rotatably supported by the base 10, and the other end side of the second arm 60 is rotatably supported by the bracket 30 (bell crank 40). As illustrated in
A width of the first arm 50 is larger than a width of the second arm 60 over the longitudinal direction of the first arm 50 and the second arm 60. By optimally setting the widths and arm lengths of the first arm 50 and the second arm 60, the first arm 50, the second arm 60, and the window regulator 1 can be measured or smoothly driven.
As described later with reference to
The one end side of the first arm 50 and the one end side of the second arm 60 are rotatably supported by the base 10 in a manner of deviating in a driving direction of the bracket 30 that supports the window glass W and the vehicle width direction.
Here, as denoted by reference signs in
When the rotational driving force of the motor unit 20 is transmitted to the first arm 50 in a state in which the base 10 is fixed to the automobile (vehicle), the rotational driving force is also transmitted to the second arm 60. As a result, the bracket 30 and the window glass W are raised and lowered (driven) in the upper-lower direction (driving direction). At this time, for a fully open position, a fully closed position and an intermediate position as illustrated in
In the related-art window regulator, there is a problem that a force in a rotational direction is applied to the window glass and causes the window glass to rotate at or near a top dead center of the window glass. This phenomenon is caused by an insufficient length of a glass end, and is further a problem in a front door in which the length of the glass end tends to be short (it is less likely to be a problem in a rear door in which the length of the glass end is easily secured).
As a type of related-art window regulator, a single-arm type window regulator and an X-arm type window regulator are known. However, especially when the single-arm type window regulator is applied to a windshield, the single-arm type window regulator cannot completely solve the problem that the force in the rotational direction is applied to the windshield and causes the windshield to rotate. On the other hand, although the X-arm type window regulator can attain a certain effect of preventing the rotation of the window glass, the X-arm type window regulator has a complicated structure and a large size, and also tends to cause a cost increase.
Therefore, in the window regulator 1 according to the present embodiment, the four-link pivot fulcrum (four-link regulator) is attained by the base 10, the bracket 30, the first arm 50, and the second arm 60. At or near the top dead center of the window glass W, the force that causes the window glass W to rotate forward is received by cooperation between the second arm 60 and the first arm 50 (the window glass W is prevented from falling forward). More specifically, while the first arm 50 plays a main role of raising and lowering the bracket 30 (window glass \A/), the second arm 60 that is supported by the bell crank 40 directly below the first arm 50 receives, by subsidiarily supporting the first arm 50, a force that causes the window glass W to rotate forward at or near the top dead center of the window glass W (the window glass W is prevented from falling forward). The four-link regulator according to the present embodiment has advantages of simple structure, small size, and low costs as compared with the X-arm type window regulator.
In the window regulator 1 according to the present embodiment, in the assembled (sub-assembled) state before being incorporated into the automobile (vehicle), the four-link pivot fulcrum (four-link regulator) is formed in which one end sides of the first arm 50 and the second arm 60 are rotatably supported by the base 10 at different positions and the other end sides of the first arm 50 and the second arm 60 are rotatably supported by the bracket 30 (bell crank 40) at different positions. Therefore, the attachment to the automobile (vehicle) can be simplified (a structure or process of the attachment can be simplified and the number of man-hours or variations can be reduced). More specifically, the attachment of the window regulator 1 to the automobile (vehicle) is completed simply by inserting four fastening members (not illustrated) into the four insertion holes 11 of the base 10 and fastening (fastening together) the four fastening members to the door panel. In addition, it is only necessary to support the window glass W by the bracket 30 at an appropriate timing. On the other hand, in Reference 1 described above, since the sub arm is swingably provided on the side beam disposed on an inner side of a door outer panel, the number of man-hours or variations in the attachment to the automobile (vehicle) increases.
As illustrated in
In this manner, the base 10 includes the first support flat-surface portion 18 (pivot support hole 14) by which the one end side of the first arm 50 is rotatably supported, and the second support flat-surface portion 17 (pivot support hole 15) by which the one end side of the second arm 60 is rotatably supported. The first arm 50 of which the one end side is supported by the first support flat-surface portion 18 (pivot support hole 14), and the second arm 60 of which the one end side is supported by the second support flat-surface portion 17 (pivot support hole 15) are offset in the vehicle width direction. As illustrated in
When a plate surface position at which the four insertion holes 11 are formed is set as a reference surface of the base 10, rigidity of a portion (near the pivot axis R1) that supports one end portion of the first arm 50 is secured by forming the first support flat-surface portion 18 in a shape protruding from the reference surface in a dome shape in the vehicle width direction. Further, in order to secure rigidity of a portion (near the pivot axis R3) that supports one end portion of the second arm 60 as well, a support position of the second arm 60 is not that far from a support position of the first arm 50. Therefore, the pair of sidewall portions 16 and the second support flat-surface portion 17 are formed in a shape (see
By rotatably supporting the one end side of the second arm 60 by the second support flat-surface portion 17 (pivot support hole 15) that forms a connection portion having a U-shaped cross section, a position of a rotation support axis (pivot support pin P1) in the vehicle width direction can be appropriately set (adjusted) and high rigidity of the connection portion between the second arm 60 and the base 10 can be maintained. In Reference 1 described above, since the main arm and the sub arm are supported in a state of being separated from each other in the vehicle width direction, rigidity of arm members is insufficient, resulting in deterioration in accuracy or variation in assembly.
The window regulator 1 according to the present embodiment is a four-link window regulator in which the one end side of the first arm 50 and the one end side of the second arm 60 are rotatably supported by the base 10, and in which the other end side of the first arm 50 and the other end side of the second arm 60 are rotatably supported by the bracket 30 (bell crank 40) (four rotation support positions are different). In addition, as illustrated in
In
In Reference 1 described above, the rotation support portions on one end sides of the main arm and the sub arm are offset only in the vehicle front-rear direction (positions in the upper-lower direction are the same), and the rotation support portions on the other end sides of the main arm and the sub arm are offset only in the vehicle front-rear direction (positions in the upper-lower direction are the same). Since the main arm and the sub arm overlap (intersect) each other during the pivoting movement, a local force (a force that causes deformation) is applied to the main arm and the sub arm. More specifically, since moment arms applied to the overlapped (intersected) main arm and sub arm are infinite, a load applied to the sub arm increases particularly, which leads to an increase in a size of the sub arm (there is no choice but to increase the size).
The window glass W is fixed to the bracket 30 by two fastening members (not illustrated) that are each inserted into a respective one of the two insertion holes 31. When the window glass W is rotated, a rotation axis of the window glass W generates a moment caused by a positional relationship between the pivot axis R1 and the pivot axis R4 in
The bracket 30 includes the bell crank 40 that is slidable in the extending direction (front-rear direction) of the slide rail 32 of the bracket 30, and the other end side of the first arm 50 and the other end side of the second arm 60 are rotatably supported by the bell crank 40 in a manner of deviating in the driving direction (upper-lower direction) of the bracket 30 that supports the window glass W (see the pivot axis R2 and the pivot axis R4 in
The bell crank 40 is the substantially L-shaped (substantially boomerang-shaped) member including the first side 41 extending in the front-rear direction (the extending direction of the slide rail 32 of the bracket 30) and the second side 42 bent downward (the direction intersecting the extending direction of the slide rail 32 of the bracket 30) from the rear end portion of the bracket 30. The other end side of the first arm 50 is rotatably supported by the connection portion between the first side 41 and the second side 42 (pivot axis R2 in
In the window regulator 1 according to the present embodiment, in a movable range of the first arm 50, a line segment (line segment connecting the pivot axis R1 and the pivot axis R2) connecting the rotation center on the one end side of the first arm 50 and the rotation center on the other end side of the first arm 50 does not overlap the rotation center (pivot axis R3) on the one end side of the second arm 60 and the rotation center (pivot axis R4) on the other end side of the second arm 60. Accordingly, damage to the window regulator 1 can be prevented within the movable range of the first arm 50, and the window regulator 1 (window glass W) can be stably driven.
In the window regulator 1 according to the present embodiment, when the window glass W is located at the bottom dead center, a deviation amount between the rotation support portion (pivot axis R1) on the one end side of the first arm 50 and the rotation support portion (pivot axis R3) on the one end side of the second arm 60 in the driving direction (upper-lower direction) and a deviation amount between the rotation support portion (pivot axis R2) on the other end side of the first arm 50 and the rotation support portion (pivot axis R4) on the other end side of the second arm 60 in the driving direction (upper-lower direction) are smaller than a distance between the rotation center (pivot axis R2) on the other end side of the first arm 50 and a lower surface of a vehicle door panel. Accordingly, even when the window glass W is located at the bottom dead center, interference with the vehicle door panel can be prevented, and the window regulator 1 (window glass \N) can be stably driven.
In the window regulator device according to Reference 1 described above, there is a problem that an undesirable force acts on the window glass due to a deviation between a raising and lowering trajectory of the window glass and driving trajectories of the main arm and the sub arm, and that smooth raising and lowering is inhibited. This problem is caused by, in addition to a fact that the main arm and the sub arm draw linear trajectories while the window glass and a door frame draw a trajectory having a curvature, a fact that each rotation center axis (rotation support axis) of the main arm and the sub arm are oriented in the vehicle width direction. A pulling force based on the bending of the main arm and the sub arm acts when the window glass is raised and lowered, or a pushing force is generated when the window glass is closed.
The window regulator 1 according to the present embodiment solves the above problem, and prevents the action of force on the window glass W and attains smooth driving by bringing the driving trajectories of the window glass W and the arm members (first arm 50 and second arm 60) close to each other. Therefore, at least one of the rotation center axes on the one end sides of the arm members (first arm 50 and second arm 60) and the rotation center axes on the other end sides of the arm members is inclined in the front-rear direction (vehicle front-rear direction) with respect to the vehicle width direction when viewed from the upper-lower direction (vehicle upper-lower direction). More specifically, at least one of the rotation center axis (pivot axis R1) on the one end side of the first arm 50, the rotation center axis (pivot axis R2) on the other end side of the first arm 50, the rotation center axis (pivot axis R3) on the one end side of the second arm 60, and the rotation center axis (pivot axis R4) on the other end side of the second arm 60 is inclined in the front-rear direction (vehicle front-rear direction) with respect to the vehicle width direction when viewed from the upper-lower direction (vehicle upper-lower direction).
At least one of the rotation center axes on the one end sides of the arm members (first arm 50 and second arm 60) and the rotation center axes on the other end sides of the arm members is inclined toward the vehicle front-rear direction (front side or rear side) as advancing in a vehicle exterior direction when viewed from the upper-lower direction. More specifically, at least one of the rotation center axis (pivot axis R1) on the one end side of the first arm 50, the rotation center axis (pivot axis R2) on the other end side of the first arm 50, the rotation center axis (pivot axis R3) on the one end side of the second arm 60, and the rotation center axis (pivot axis R4) on the other end side of the second arm 60 is inclined toward the vehicle front-rear direction (front side or rear side) as advancing in the vehicle exterior direction when viewed from the upper-lower direction.
As illustrated in
As illustrated in
At least one of the rotation center axes on the one end sides of the arm members (first arm 50 and second arm 60) and the rotation center axes on the other end sides of the arm members is inclined forward in the vehicle front-rear direction as advancing in the vehicle exterior direction when viewed from the vehicle upper-lower direction in a case in which the rotation center axis on the other end side is located rearward of the rotation center axis on the one end side in the vehicle front-rear direction, and is inclined rearward in the vehicle front-rear direction as advancing in the vehicle exterior direction when viewed from the vehicle upper-lower direction in a case in which the rotation center axis on the other end side is located forward of the rotation center axis on the one end side in the vehicle front-rear direction.
Regarding inclination degrees of the pivot axis R1 to the pivot axis R4, assuming curvatures of general window glass and a door frame, when the window glass and the door frame are rotated forward or rearward by about 10° with reference to the vehicle width direction, an operation that matches (follows) the curvatures of the window glass and the door frame is enabled. However, regarding the inclination degrees of the pivot axis R1 to the pivot axis R4, various design changes can be made according to the curvatures of the window glass and the door frame (for example, even if an inclination angle smaller than the most preferable inclination angle is set, a certain effect can be attained). Although a wire-type regulator has an advantage that it is easy to follow a raising and lowering trajectory of the window glass, the window regulator 1 according to the present embodiment has advantages that the window regulator 1 can follow the raising and lowering trajectory of the window glass at a level equivalent to that of the wire-type regulator while employing the four-link pivot fulcrum (four-link regulator).
By reducing the generation of the force applied to the window glass W in the vehicle width direction due to the inclination of the rotation center axis (pivot axis) described above, the action of the pulling force generated by the first arm 50 and the second arm 60 when the window glass W is raised and lowered can be prevented, the generation of the pushing force when the window glass W is closed can be prevented, and the window glass W can be smoothly raised and lowered (driven). The rotation of the window glass W can be prevented by the four-link pivot fulcrum (four-link regulator).
As illustrated in
Similarly, the second arm 60 has a relatively large inclination degree with respect to the vehicle front-rear direction at the rotation support portion (rotation center axis or the vicinity thereof) on the one end side and the rotation support portion (rotation center axis or the vicinity thereof) on the other end side, and has a relatively small inclination degree with respect to the vehicle front-rear direction on the middle side of the one end side and the other end side. For example, from the front side toward the rear side, the second arm 60 may be inclined toward the vehicle exterior side in a relatively steep manner in the vicinity of the rotation support portion on the one end side, inclined toward the vehicle interior side or the vehicle exterior side in a relatively gentle manner on the middle side of the one end side and the other end side, and inclined toward the vehicle exterior side in a relatively steep manner in the vicinity of the rotation support portion on the other end side. By optimally setting the inclination degree of the second arm 60 according to a position in the front-rear direction, a size of the second arm 60 in the vehicle width direction can be reduced, and the window regulator 1 can be disposed with high layout efficiency even in a narrow space in the door panel. The middle side may extend in the front-rear direction, and may not be inclined to the vehicle interior side or the vehicle exterior side. A case in which the inclination degree on the middle side is relatively small also includes a case in which no inclination is present.
As illustrated in
The window regulator 1 according to the present embodiment includes the driven gear (gear member) 53 formed with the tooth portions (gear mechanism) 53X that transmit the rotational driving force of the motor unit (driving member) 20 to the arm members (first arm 50 and second arm 60). As illustrated in
On the other hand, the base 10 is fastened (fastened together) to the door panel by fastening members (not illustrated) that are inserted into the four insertion holes 11, and an axial direction of the fastening members (insertion holes 11) is oriented in the vehicle width direction and is not parallel to the rotation center axis on the one end side or the rotation center axis on the other end side (both inclined) of the arm members (first arm 50 and second arm 60). Accordingly, the assembly of the window regulator 1 can be simplified.
In the present embodiment, in order to prevent the action of the force on the window glass W and attain smooth driving by bringing the driving trajectories of the window glass W and the arm members (first arm 50 and second arm 60) close to each other, as illustrated in
Therefore, in the present embodiment, a “bent portion” can be provided, which prevents the motor unit (driving member) 20 from protruding in the vehicle width direction due to the inclination of at least one of the rotation center axis (R1 and R3) on the one end side of the arm members (first arm 50 and second arm 60) and the rotation center axis (R2 and R4) on the other end side of the arm members. Accordingly, the action of the force on the window glass W can be prevented, smooth driving can be attained, interference with the door panel (for example, the inner panel) can be prevented, and the layout restriction can be removed (it is not necessary to widen the space in the door panel).
Further, as illustrated in
In
The “bent portion 53M” according to the present embodiment can also be expressed as follows. The tooth portions (gear mechanism) 53X constitute a “meshing portion” that meshes with the gear mechanism (for example, the serration shaft 21) of the motor unit (driving member) 20. The “bent portion 53M” may be formed between the rotation center axis and the “meshing portion” such that the “meshing portion” is located on a rotation center axis side when a plane is defined. The plane includes an axis fixing plane between the rotation center axis on the one end side of the first arm (arm member) 50 and the rotation center axis on the other end side of the first arm 50 and is orthogonal to the rotation center axes. That is, the “bent portion” may be provided between the axis portion and the meshing portion such that the meshing portion is located on the axis side with respect to a virtual line of the axis fixing plane.
The “bent portion” according to the present embodiment may have configurations as follows.
In a first aspect, in a case in which the driving member is located on a front side with respect to the rotation center axis of the arm member in the vehicle front-rear direction, when the tip end portion on the vehicle exterior side of the rotation center axis of the arm member is inclined forward in the vehicle front-rear direction, a “bent portion” that is bent outward (vehicle exterior side) in the vehicle width direction may be provided between the rotation center axis of the arm member and the meshing portion of the gear mechanism.
In a second aspect, in a case in which the driving member is located on the front side with respect to the rotation center axis of the arm member in the vehicle front-rear direction, when the tip end portion on the vehicle exterior side of the rotation center axis of the arm member is inclined rearward in the vehicle front-rear direction, a “bent portion” that is bent inward (vehicle interior side) in the vehicle width direction may be provided between the rotation center axis of the arm member and the meshing portion of the gear mechanism.
In a third aspect, in a case in which the driving member is located on a rear side with respect to the rotation center axis of the arm member in the vehicle front-rear direction, when the tip end portion on the vehicle exterior side of the rotation center axis of the arm member is inclined forward in the vehicle front-rear direction, a “bent portion” that is bent inward (vehicle interior side) in the vehicle width direction may be provided between the rotation center axis of the arm member and the meshing portion of the gear mechanism.
In a fourth aspect, in a case in which the driving member is located on the rear side with respect to the rotation center axis of the arm member in the vehicle front-rear direction, when the tip end portion on the vehicle exterior side of the rotation center axis of the arm member is inclined rearward in the vehicle front-rear direction, a “bent portion” that is bent outward (vehicle exterior side) in the vehicle width direction may be provided between the rotation center axis of the arm member and the meshing portion of the gear mechanism.
In any one of the first to fourth aspects, the plane from the bent portion to the meshing portion may have a conical shape.
Although this disclosure disclosed here has been described in detail above, it is obvious to those skilled in the art that this disclosure disclosed here is not limited to the embodiments described in this disclosure. This disclosure disclosed here can be corrected and modified without departing from the spirit and scope of this disclosure that are determined based on the claims. Accordingly, the description of this disclosure is intended for illustrative description and does not have any restrictive meaning to this disclosure disclosed here.
In the embodiment described above, the window regulator 1 of a power-window type is described as an example in which the first arm 50 and the second arm 60 are rotationally driven by the motor unit 20. However, this disclosure is also applicable to a manual window regulator that transmits a driving force of manual rotation to the first and second arms. That is, in a specific aspect, there is a degree of freedom for the driving member that rotationally drives the first and second arms (arm members), and various design changes can be made.
In the embodiment described above, the case is described as an example in which the other end portions of the first arm 50 and the second arm 60 are rotatably supported by the bell crank (shoe member) 40 slidably supported by the bracket 30. However, an aspect may be adopted in which the other end portions of the first and second arms are rotatably supported by a part of the bracket or another support member for the bracket.
In the embodiment described above, the case is described as an example in which the rotation support portions on the other end sides of the first arm 50 and the second arm 60 are offset in the upper-lower direction and are (almost) not offset in the front-rear direction since the other end side of the first arm 50 is rotatably supported by the connection portion between the first side 41 and the second side 42 and the other end side of the second arm 60 is rotatably supported by the second side 42. However, by rotatably supporting the other end side of the first arm 50 by the first side 41, the rotation support portions on the other end sides of the first arm 50 and the second arm 60 may be offset in both the upper-lower direction and the front-rear direction. In this case, it is also preferable that an offset amount in the upper-lower direction is larger than an offset amount in the front-rear direction.
In the embodiment described above, the four-link pivot fulcrum (four-link regulator) implemented by the base 10, the bracket 30, the first arm 50, and the second arm 60 is described as an example. However, this disclosure may be applied to a general type of window regulator that raises and lowers (drives) the window glass W by an arm member, and this disclosure may also be applied to, for example, a single-arm type window regulator or an X-arm type window regulator.
According to an aspect of this disclosure, a window regulator includes: a base assembled to a vehicle; a bracket configured to support window glass; an arm member having one end side rotatably supported by the base and the other end side rotatably supported by the bracket; and a driving member configured to drive, by rotationally driving the arm member, the bracket configured to support the window glass. At least one of a rotation center axis on the one end side of the arm member and a rotation center axis on the other end side of the arm member is inclined in a vehicle front-rear direction with respect to a vehicle width direction when viewed from a vehicle upper-lower direction.
According to this disclosure, the window regulator can be provided in which the action of the force on the window glass can be prevented and the smooth driving can be attained by bringing the driving trajectories of the window glass and the arm member close to each other by inclining the rotation center axes of the arm member.
The principles, preferred embodiment and mode of operation of the present invention have been described in the foregoing specification. However, the invention which is intended to be protected is not to be construed as limited to the particular embodiments disclosed. Further, the embodiments described herein are to be regarded as illustrative rather than restrictive. Variations and changes may be made by others, and equivalents employed, without departing from the spirit of the present invention. Accordingly, it is expressly intended that all such variations, changes and equivalents which fall within the spirit and scope of the present invention as defined in the claims, be embraced thereby.
Number | Date | Country | Kind |
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2022-139938 | Sep 2022 | JP | national |
2023-064110 | Apr 2023 | JP | national |