JP2001287683A - Variable handle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure sufficient fixing strength with the small number of parts and a simple structure by rotating a handle between the using position and the housing position along a handle post. SOLUTION: A handle holding part 22 is provided on the upper part of a handle post 20, and circular holes 26 are formed on the right and left side surfaces. A pair of handles 34 have base parts mounted on the circular holes 26 so as to be freely rotated around axes W of the circular holes 26, and they are bent at middle parts C projecting from the circular holes 26 into a U shape as a whole. The axes W as the rotational centers of a pair of handles 34 cross to each other above the handle post 20, each handle 34 is rotated around the axis W, and therefore, grip parts D between the middle parts C of the handles 34 and the tips are rotated between the using position extending toward the sides of the handle holding part 22 and the housing position extending along the handle post 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bicycle, and more particularly, to a use position in which left and right handles can be independently rotated with respect to a handle post, and the left and right handles extend to the side of the handle post. The present invention relates to a bicycle that can be changed between a storage position along a handle post (a concept including a bicycle generally used in addition to a bicycle generally used and a skateboard type. The same applies hereinafter).

[0002]

2. Description of the Related Art A bicycle disclosed in Japanese Patent Publication No. 1-56952 is known as a bicycle in which the right and left handles can be independently rotated with respect to a handle post.

[0003]

However, in the above-described structure of the conventional variable handle of a bicycle, the position of the handle 2 can be adjusted in a normal use state, but the handle 2 is further rotated to follow the handle post 1. There is a problem that cannot be stored. Also, as shown in FIG.
The bolt 13 is attached to the handle support member 4
And a lock nut 4, which is rotatably mounted, and a coil spring 14 for urging the handle 2 in a direction in which the handle 2 is always separated from the handle support member 4 is fitted to each bolt 13 so as to be arranged. However, there is a problem that the number of parts increases and the product cost increases as a result. Each handle 2 is fixed to the handle support member 4 in a cantilever state by a lock nut 4.
Since it is fixed to the handle post 1 via the bolt 13 which is a component having a limit in increasing the diameter, it is considered that the strength may be insufficient.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to solve the above-mentioned problems, and an object of the present invention is to provide a variable handle capable of rotating a handle between a position where the handle can be normally used and a storage position along a handle post. To provide. Another object of the present invention is to provide a variable handle capable of securing sufficient fixing strength with a smaller number of parts and a simple structure.

[0005]

According to the present invention, there is provided a variable handle according to the present invention, wherein the variable handle is provided on an upper portion of a handle post, and has a circular hole formed on each of left and right side surfaces. The base portion is rotatably mounted on the block-shaped handle holding portion and the corresponding circular hole around the axis of the circular hole, and is bent at a halfway portion protruding from the circular hole to form an overall U shape. With the pair of handles provided, the axes that are the rotation centers of the pair of handles cross each other above the handle post, and each handle rotates about the axis,
A grip portion between the intermediate portion and the tip of each handle extends between a use position extending toward the side of the handle holding portion and a storage position close to the handle post and along the longitudinal direction of the handle post. It is characterized by turning. According to this, the handle can be used normally and the storage position along the handle post is simple with the structure in which the rotation axis of the handle is crossed at the upper part of the handle holding portion and the handle is formed in a V shape. And can be rotated between them.

More specifically, the bases of the pair of handles are formed in a flange shape and located in the handle holding portion, and are formed between the end faces of the bases of the pair of handles in the handle holding portion. A pusher disposed in the gap and movable between a pressing position where the base of the handle comes into contact with the end surface of the base of the handle to press the base of the handle against the inner wall surface of the handle holding portion and a release position where the pressing of the base of the handle is released. A contact member, a moving means provided on the handle holding portion for moving the pressing member between the pressing position and the release position, and an outer peripheral surface of the base portion of the handle facing an inner surface of the handle holding portion. And the inner surface of the handle holding portion, or between the end surface of the base of the handle facing the outer peripheral surface of the pressing member and the outer peripheral surface of the pressing member; When member is moved to the pressing position Te, characterized by comprising an engaging means for restricting the rotation of the handle relative to the handle holder. According to this configuration, the base of the handle having a larger diameter than the bolt is directly pressed against the handle holding portion and supported without using a bolt having a limit in increasing the thickness as in the related art. The number of parts is small, the structure is simplified, and the handle can be fixed with high strength.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the variable handle according to the present invention will be described below in detail with reference to the accompanying drawings. (First Embodiment) First, the structure of a variable handle will be described with reference to FIGS. Reference numeral 20 denotes a bicycle handle post. Reference numeral 22 denotes a handle support, which is attached to an upper portion of the handle post 20.

The handle holder 22 will be described in more detail. The handle holding portion 22 includes left and right wall surfaces 24, 2
4 is formed in the shape of a hollow block in which a circular hole 26 is formed, and the bottom surface 28 is fixed to the upper end of the handle post 20. As shown in FIG. 1, the axes W of the circular holes 26 cross each other (cross point A) above the handle post 20 because the circular holes 26 are both opened obliquely downward by the same angle at the same angle. It has a configuration. In the present embodiment, as an example, the axis W of each circular hole 26 is located on the same plane as the axis X of the handle post 20, and the axis W of each circular hole 26 is approximately 45 degrees with respect to the axis X of the handle post 20. The cross point A is located on the axis X. In addition, a region B of a peripheral portion of the circular hole 26 on the inner surface of the handle holding portion 22 is formed in a tapered surface shape whose diameter decreases toward the circular hole 26, and is formed in a funnel shape (a truncated cone shape) described later. The handle can be in close contact with the outer peripheral surface of the base. The front and rear wall surfaces 3 of the handle holding portion 22 sandwiched between left and right wall surfaces 24.
Both 0 and 30 rise substantially at right angles from the bottom surface 28, and their inner surfaces are formed in parallel. Each of the front and rear wall surfaces 30 is formed with a first through hole 32 through which a shaft for rotatably supporting a cam described later is inserted.

The pair of handles 34 are formed in the same shape. More specifically, the base portion 36 of the handle 34 is formed in a flange shape (more specifically, a funnel shape and a trumpet shape), and is further bent at an intermediate portion C near the base portion 36, so that the entire shape of the handle 34 is shaped like a letter. Is formed. And the part D from the bent halfway part C to the tip is
Functions as a grip that the user holds in his hand. The outer diameter of each part of the handle 34 is smaller than the inner diameter of the circular hole 26 so that the grip part D can be inserted into the circular hole 26, and the outer diameter of the part between the halfway part C and the funnel-shaped base 36. The outer diameter of the portion E near the base 36 is such that when the handle 34 is inserted into the circular hole 26 and attached to the handle holding portion 22, the outer peripheral surface of the portion E slides on the inner peripheral surface of the circular hole 26. It is set so that it can rotate coaxially. Further, among the portions between the halfway portion C and the funnel-shaped base portion 36, the outer diameter of the portion F near the halfway portion C is formed smaller than the outer diameters of the portion E and the grip portion D, and is formed in the circumferential direction. Function as a concave groove 38 along.

With this configuration, each handle 34 has its grip portion D side inserted into the circular hole 26 from the inside of the handle holding portion 22, and the tapered outer peripheral surface 36a of the base 36 thereof.
Is attached to the handle holder 22 by pulling out until it comes into contact with and contacts the region B on the inner surface of the handle holder 22. Thereafter, the concave groove 38 of the handle 34 protruding outward from the handle holding portion 22 from the circular hole 26 (the outer peripheral surface of the portion F)
, A fixing ring 40 (formed of semicircular 40a and 40b and a connecting pin 40c for connecting them) is mounted. As a result, the outer peripheral surface 36 a of the base 36 of the handle 34 located inside the handle holding portion 22 is in close contact with the region B on the inner wall surface of the handle holding portion 22, and the fixing ring 40 located outside the handle holding portion 22. The side surfaces contact the outer surfaces of the left and right wall surfaces 24 of the handle holding portion 22, so that the handle 34 does not come out of the handle holding portion 22 and the base portion 36 of the handle 34 does not move inward of the handle holding portion 22. Is fixed. In this state, as described above, the tapered outer peripheral surface 36a of the base 36 of the handle 34 corresponds to the corresponding tapered outer peripheral surface 36a (the outer peripheral surface 3 of the base 36).
6a, the outer peripheral surface of the cylindrical portion E following the base 36 is in close contact with the inner peripheral surface of the circular hole 26. Accordingly, each handle 34 is rotatable about the axis W of the circular hole 26.

In the handle holder 22, a gap G is formed between the bases 36 of the handles 34 mounted in the circular holes 26, and a pressing member 42 is disposed in the gap G. The pressing member 42 contacts the end surface of the base 36 of the handle 34 and presses the base 36 of the handle 34 against the region B on the inner wall surface of the handle holding portion 22 (the position in FIG. 2). It can be moved vertically along a release position (the position shown in FIG. 3) where the pressing of the button is released. The wall surfaces 44, 44 of the pressing member 42 facing the base 36 of the handle 34 are circular holes 2
6 is formed on a slope perpendicular to the axis W of FIG.
As shown in FIG. The front and rear wall surfaces 46, 46 of the pressing member 42 are parallel to each other, and the interval (thickness) thereof is different from that of the handle holding portion 2 by the pressing member 42.
2, the front and rear wall surfaces 30 of the handle holder 22
It is set so that it can slide in the up and down direction in contact with the inner surface of. The planar shape of the upper portion H of the wall surface 44 of the pressing member 42 is set according to the opening of the handle holding portion 22, and when the pressing member 42 is inserted into the handle holding portion 22, The outer peripheral surface is fitted with the inner peripheral surface of the opening of the handle holding portion 22 to restrict the movement of the pressing member 42 only in the vertical direction. A lid 48 is integrally formed on the upper surface of the pressing member 42 so as to cover the opening of the handle holder 22.

The moving means 50 has a function of moving the pressing member 42 between a pressing position and a releasing position. The detailed configuration of the moving means 50 includes an insertion hole 52 (a long hole having a cross-sectional shape that is long in the left-right direction) formed through the front and rear wall surfaces 46 of the pressing member 42, and inserted into the insertion hole 52. A cylindrical body 54 in which a second through hole 56 for inserting a shaft is formed at a position eccentric from the axis;
A shaft 58 inserted into the first through-hole 32 of the first and second through-holes 56 of the cylindrical body 54, a cam lever 60 attached to one end of the shaft 58 protruding from the handle holding portion 22, Attached to both ends of the shaft 58 so as to sandwich the part 22 and the lever 60,
It comprises a shaft 58 and a second fixing ring 62 for fixing the lever 60 so as not to fall out of the handle holder 22.

The outer peripheral surface of the shaft 58 and the cylindrical body 54
The inner peripheral surface of the second through hole 56 provided on the shaft 5 and the inner peripheral surface of the hole 64 of the lever 60 into which the shaft 58 is inserted, and the inner peripheral surface of the shaft
A first engaging means for integrally rotating the lever 60 and the columnar body 54 via 8 is formed. In the present embodiment, as an example, a second concave groove 58 a is formed in the outer peripheral surface of the shaft 58 along the axial direction, and the inner peripheral surface of the second through hole 56 of the cylindrical body 54 and the inner peripheral surface of the hole 64 of the lever 60 are formed. The projections 56a and 64a that are respectively fitted into the second concave grooves 58a are formed on the surfaces and the first engagement means.

The moving means 50 has this structure,
When the cylinder 0 is rotated, the cylinders 54 rotate together via the shaft 58, and the cylinders 54 are eccentric with respect to the axis of the shaft 58, so that the cylinders 54 move in the insertion holes 52 and are pushed. The contact member 42 moves up and down. Then, the pressing member 42 moves downward so that the pressing member 42 shown in FIG.
Then, by moving upward and conversely upward, it moves to the release position in FIG.

When the lever 60 is rotated to move the pressing member 42 to the pressing position, the pair of handles 3
4 needs to be regulated so as not to rotate with respect to the handle holding portion 22. For this reason, between the end surface 36 b of the base portion 36 of the handle 34 facing the wall surface 44 of the pressing member 42 and the wall surface 44 of the pressing member 42, or the outer periphery of the base portion 36 of the handle 34 facing the inner surface of the handle holding portion 22. Face 3
A second engagement means for restricting rotation of the handle 34 with respect to the handle holding portion 22 is formed between 6a and (the area B of) the inner peripheral surface of the handle holding portion 22.

The second engaging means is formed in the former configuration in FIGS. The latter configuration will be described in a second embodiment described later. That is, handle 3
The first tooth portion 66 (a cross-section of which is approximately one as an example) is radially formed on the end surface 36b of the funnel-shaped base 36 of FIG. 4, specifically, on the inner peripheral surface formed on the reverse tapered surface of the funnel-shaped base 36. (Triangular) and the second tooth portion 6 in the form of a "smooth bevel gear" protrudingly attached to a wall surface 44 formed on a slope facing the end face of the base portion 36 of the handle 34 of the pressing member 42.
8.

More specifically, the second tooth portion 68 is radially formed on the outer peripheral surface of the frusto-conical body 70 in accordance with the pitch of the first tooth portion 66. ". The frustoconical body 70 cannot rotate on the wall surface 44 of the pressing member 42 with respect to the wall surface 44,
And it is attached so as to be slidable in the vertical direction along the wall surface 44. More specifically, the ridge 70a formed on the bottom surface of the truncated cone 70 and the concave groove 44 formed on the wall surface 44
a. The reverse configuration is of course also acceptable. Since the frustoconical body 70 can move along the wall surface 44 in this manner, the frustoconical body 70 on which the second teeth 68 are formed can be smoothly moved to the end face of the funnel-shaped base 36 of the concaved handle 34 ( (Inner peripheral surface).

Reference numeral 72 denotes a biasing spring, which is constituted by a coil spring as an example, is disposed between the base 36 of the handle 34 and the truncated cone 70, and is a direction in which the truncated cone 70 is always separated from the base 36. Is energizing. Therefore, even if the pressing member 42 moves in the vertical direction, the frustoconical body 70 is maintained so as to always adhere to the wall surface 44. When the pressing member 42 moves upward to the release position in FIG. 3, the frustoconical body 70 urged by the urging spring 72 also moves with the upward movement of the pressing member 42. The first tooth portion 66 and the second tooth portion 68 are surely in a non-meshing state, and the handle 3
4 can be smoothly rotated.

Next, the operation of the variable handle having the above configuration will be described. To rotate the handle 34, the lever 60 is rotated to move the pressing member 42 to the release position. As a result, the wall surface 44 of the pressing member 42 separates from the base 36 of the handle 34 as shown in FIG. 3, and the second tooth portion 68 attached to the wall surface 44 of the pressing member 42 is pressed by the urging spring 72 at the same time. As a result, both meshing states are released by separating from the first tooth portion 66. As a result, the pair of handles 34 are independent of each other,
About the axis W. The rotation locus of the grip portion D of the handle 34 has a substantially conical shape with the bent portion C at the top.

For example, by forming the axis W of the circular hole 26 at an angle of about 45 degrees diagonally downward with respect to the axis X of the handle post 20, the bending angle of the handle 34 is also set to about 45 degrees. When the handle 34 is turned, the grip portion D draws a conical shape having an apex angle of about 90 degrees. Then, the user of the bicycle can fix the grip portion D at an arbitrary position within this range. When the grip portion D is located at the highest position of the conical trajectory, the entire handle 34 is substantially orthogonal to the axis X of the handle post 20, and this position is the use position (FIG. 4).
Position J). When the grip portion D is located at the lowest position of the conical trajectory, the grip portion D and the entire handle 34 are substantially parallel to the axis X of the handle post 20, and are closest to the handle post 20. The state is along the post 20. This position is the storage position of the handle 34 (position K in FIG. 4). The handle 34 can be moved to an arbitrary position by rotating as shown in FIG. Therefore, the use position of the handle 34 is not limited to the position J in FIG. 4 and may be a position in which the handle 34 has a C-shape toward the user holding the handle 34. It can be set to any position, such as a position that opens in a character shape.

When it is desired to fix the position of the grip portion D at a desired position, the lever 60 is turned while the grip portion D is moved to the desired position, and the pressing member 4 is rotated.
2 is moved to the pressing position. As a result, the wall surface 44 of the pressing member 42, more specifically, the second tooth portion 68 formed on the wall surface 44 meshes with the first tooth portion 66 formed on the end surface of the base 36 of the handle 34 and the first tooth portion 66. The teeth 66, that is, the base 36, are pressed against the inner surface of the handle holder 22.
This restricts the pair of handles 34 from rotating around the axis W of the circular hole 26, and
Is fixed at a desired position. Further, an outer peripheral surface 36 of a funnel-shaped base 36 of the handle 34.
a is pressed against a funnel-shaped (tapered) region B on the inner surface of the handle holding portion 22, and the handle 34 is pressed.
Are fixed such that the axis of the base 36 is aligned with the axis W of the circular hole 26 without play. Unlike the related art, the base 36 of a member thicker than the bolt 13, such as the handle 34, can be directly fixed to the handle holding portion 22 without the intervention of the bolt 13, so that the handle 34 has a simple structure and high strength. Can be fixed.

(Second Embodiment) The variable handle of this embodiment has the same basic concept and basic configuration as those of the first embodiment, and the same components are denoted by the same reference numerals. Therefore, the description will be omitted, and only the different configuration will be described with reference to FIG. First, the second engagement means includes a handle 34
The base 36 is formed between an outer peripheral surface 36 a of the base 36 facing the inner surface of the handle holder 22 and an inner peripheral surface (region B) of the handle holder 22. More specifically, a third tooth portion 74 (formed on the outer peripheral surface of the truncated cone 70) formed on the outer peripheral surface 36 a of the funnel-shaped base 36 of the funnel-shaped base 36 facing the region B of the inner surface of the handle holding portion 22. Configuration similar to
And a fourth tooth portion 76 (for example, the cross section is substantially triangular in shape) radially formed in the region B of the handle holding portion 22 and capable of meshing with the third tooth portion 74, forming a second engagement means. I have.

The end surface 36 of the base 36 of the handle 34
b is formed in a plane, and the wall surface 44 of the pressing member 42 facing the end surface 36b is also formed in a plane. Also,
The fixing ring 40 is not attached to the handle 34. With the configuration of the second engagement means, the handle 34
When turning the third tooth portion 74 and the fourth tooth portion 7, the handle 34 is slightly pushed into the handle holding portion 22 side.
This is because it is necessary to release the meshing state with No. 6.

The biasing spring 72 is provided on the handle holding portion 2.
The pressing member 42 is disposed between the bottom surface (inner bottom surface) of the second member 2 and the pressing member 42 and constantly urges the pressing member 42 directly upward against the handle holding portion 22. Since the end surface 36b of the base 36 of the handle 34 and the wall surface 44 of the pressing member 42 facing the end surface 36b are both formed as described above, even if they are in contact with each other, the handle 34 cannot rotate. Not inhibited. Therefore, a structure without the biasing spring 72 is also possible. The moving means 50 is, for example, a fastening screw 82 which is screwed onto the upper surface of the handle holding portion 22, and the tip of which enters the handle holding portion 22 contacts the upper surface of the pressing member 42.

In the configuration of the present embodiment, the fixing ring 40
Is unnecessary, and in some cases, the urging spring 72 is not required. Therefore, the configuration can be further simplified, and an inexpensive variable handle with a small number of parts can be provided.

(Third Embodiment) The variable handle of this embodiment has the same basic concept and basic configuration as those of the first embodiment, and the same components are denoted by the same reference numerals. The description is omitted, and only the different configuration will be described with reference to FIG. First, the second engagement means includes a handle 34
The base member 36 is provided between the pressing member 42 and the end surface 36b of the pressing member 42 facing the wall surface 44 of the pressing member 42.
In detail, the second engaging means is a hole 78 formed along the circumferential direction in the outer edge portion of the end face 36b of the base 36 as shown in FIG. And its hole 7
8 attached to the pressing member 42 that enters
0. In addition, various structures other than the pin and the hole can be adopted as long as it is a concave / convex fitting structure that can take an engaged / unengaged state.

The urging spring 72 is provided on the handle holding portion 2.
The pressing member 42 is disposed between the bottom surface (inner bottom surface) of the second member 2 and the pressing member 42 and constantly urges the pressing member 42 directly upward against the handle holding portion 22. An urging spring 72 is provided to allow the pin 80 that has entered the hole 78 to come out. Further, the moving means 50 of the first embodiment.
Has a configuration using a cylindrical body 54 as a cam, a lever 60, and the like. However, for example, a configuration of a cam lever 60 in which a cam and a lever are integrated as shown in FIG. 7 can also be adopted.

With this configuration, if the cam lever 60 is rotated to release the pressing on the pressing member 42, the urging spring 7
2 causes the pressing member 42 to move upward,
Can be removed from the hole 78 and the handle 34 can be rotated. Conversely, if the cam lever 60 is rotated, the handle 34
The outer peripheral surface 36a of the base portion 36 is pressed against the region B on the inner surface of the handle holding portion 22, the pin 80 is inserted into the hole 78, and the handle 34 is fixed in a state where the rotation is restricted. Even in the configuration of the present embodiment, since the fixing ring 40 is not required, the configuration can be further simplified, and an inexpensive variable handle with a small number of parts can be provided.

The present invention is not limited to the above-described embodiment. For example, in this embodiment, the use position of the grip portion D is substantially orthogonal to the axis of the handle post 20, and the storage position is the handle position. Since the position is parallel along the post 20, the circular hole 26 into which the handle 34 is inserted is provided.
Of the handle post 20 with respect to the axis X of the handle post 20.
The angle of the handle D is set to about 45 degrees, and the bending angle of the handle 34 is set to about 45 degrees.
The storage position K is not limited to this. Therefore,
The angle of the axis W of the circular hole 26 and the bending angle of the handle 34 are not limited thereto, and the angle of the vertex of the cone drawn by the movement trajectory of the grip portion D is not 90 degrees in the present embodiment, but is 95 degrees.
Degrees, 100 degrees, etc., or 85
Degrees, 80 degrees, or the like.

[0030]

According to the variable handle according to the first aspect of the present invention, the handle has a simple structure in which the rotating shaft of the handle is crossed at the upper portion of the handle holding portion and the handle is formed in a V shape. Thus, the handle can be rotated between a position where the handle can be normally used and a storage position along the handle post. Further, according to the variable handle of the second aspect, the base of the handle having a larger diameter than the bolt is directly pushed to the handle holding portion without using a bolt having a limit in increasing the thickness as in the conventional case. Due to the configuration in which the handle is supported, the number of parts is small, the structure is simplified, and the handle can be fixed with high strength.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view for explaining a structure of an embodiment of a variable handle according to the present invention.

FIG. 2 is a cross-sectional view of a main part for describing an internal structure of a handle holding unit, in a state where a pressing member is at a pressing position.

FIG. 3 is a cross-sectional view of a main part for describing an internal structure of a handle holding unit, in a state where a pressing member is at a release position.

FIG. 4 is a perspective view of a variable handle showing a use position and a storage position of the handle.

FIG. 5 is a perspective view of the variable handle showing a state where the handle is rotated.

FIG. 6 is a cross-sectional view of a handle holding section for explaining another embodiment of the second engaging means.

FIG. 7 is a cross-sectional view of a handle holding section for explaining another embodiment of the second engaging means.

FIG. 8 is an exploded perspective view for explaining a configuration of a conventional variable handle.

[Explanation of symbols]

 Reference Signs List 20 handle post 22 handle holding part 26 circular hole 34 handle C midway part of handle D handle grip part W axis of circular hole

Claims (2)

[Claims] 1. A hollow block-shaped handle holding portion provided on an upper portion of a handle post and having circular holes formed on left and right sides, respectively, and a base of each of the circular holes corresponds to an axis of the circular hole. A pair of handles which are rotatably mounted, bent at an intermediate portion protruding from the circular hole, and formed in an overall U-shape, wherein the axes which are the rotation centers of the pair of handles are connected to each other. By crossing over the handle post and rotating each handle about the axis, the grip portion from the halfway portion to the tip of each handle extends toward the side of the handle holding portion. A variable handle, characterized in that it rotates between a use position and a storage position along the longitudinal direction of the handle post in proximity to the handle post. 2. Each of the bases of the pair of handles is formed in a flange shape and located in the handle holding portion, and is disposed in a gap formed between end surfaces of the bases of the pair of handles in the handle holding portion. A pressing member movable between a pressing position for abutting the end surface of the base of the handle and pressing the base of the handle against the inner wall surface of the handle holding portion and a release position for releasing the pressing of the base of the handle. Moving means provided on the handle holding portion for moving the pressing member between the pressing position and the release position; an outer peripheral surface of the base of the handle facing the inner surface of the handle holding portion; and the handle holding portion Or between the end face of the base of the handle facing the outer peripheral surface of the pressing member and the outer peripheral surface of the pressing member, wherein the pressing member is The variable handle according to claim 1, further comprising an engagement means for restricting rotation of the handle with respect to the handle holding part when the handle is moved to the pressure position.