JP2019184012A - Angular adjustment unit and angular adjustment assembly - Google Patents

Abstract

To provide a constitution of an angular adjustment unit using a floating wedge capable of reducing the number of component parts and capable of facilitating an assembly stage while it has substantially the same constitution and function as those of a prior art angular adjustment unit.SOLUTION: An angular adjustment unit of this invention comprises, in order in an axial direction, a cover member, a gear part, a first member pivotally connected to the gear part to rotate around a shaft center, a second member connected outside with the gear part in the axial direction and rotated in cooperation with rotation of the gear part around its shaft center and a floating wedge member having a tooth surface that can be engaged with the tooth surface at an outer circumference of the gear part and an abutment surface that can be abutted or spaced apart at an edge part side of moving space at an opposite side in a radial direction with respect to the gear part, the gear part has a main body part having a tooth surface and a shank part protruded outside from the main body in the axial direction, an extremity end part of the shank part has a non-circular cross sectional shape, the second member is provided with an opening that has an inner wall shape fitted to the extremity end of the shank part of the gear part to restrict rotation around its axis center with respect to the shank part upon fitting.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an angle adjusting bracket and an angle adjusting assembly using a floating wedge member having a configuration with a small number of parts and an easy assembling process.

  There are movable parts and joints between various members in daily necessities, electrical appliances, factory equipment, etc., and the angle adjustment tool for multi-purpose purpose that adjusts the inclination angle of these movable parts and fixes it at the desired inclination angle Exists. For example, as an angle adjuster that shows an example of use in adjusting the angle of a seat chair or the like, in the case portion of the member (first arm) connected to one side (seat portion side, etc.), the other side (back portion side, etc.) The gear of the member (second arm) and the claw piece are pivotally supported, and the engagement of the claw piece with the gear prevents the swinging of both members in the deploying direction (the fall direction of the back portion, etc.). (See Patent Document 1).

  In the case of the angle adjuster of Patent Document 1, when a large force is applied to the first arm and the second arm, it is necessary to increase the size of the teeth of the claw pieces and gears or to roughen the tooth pitch of the gears. As a result, there are problems that the size of the claw piece and the gear housing case is large, and the angle cannot be finely adjusted due to the small number of gear teeth.

  On the other hand, in the angle adjuster proposed in Patent Document 2, a moving space along the outer periphery of the gear member and a floating wedge member that meshes with the gear member are provided, and when the gear member rotates in one direction, the tooth surface thereof is The gear member can be rotated by overcoming the tooth surface of the floating wedge member in the moving space, and the gear member tooth surface meshes with the tooth surface of the floating wedge member when rotating in the opposite direction. By locking, rotation in one direction (oscillation) is made free and rotation in the opposite direction (oscillation) is suppressed. This angle adjuster using a floating wedge is advantageous in that the number of angle switching steps can be increased, the size can be reduced, and noise during angle adjustment can be reduced.

  However, the angle adjuster disclosed in Patent Document 2 has a large number of parts, and the order and direction of assembly are determined for each member even in the assembly process, and the costs associated with inventory management and ease of assembly are as follows. From the above viewpoint, in order to make a general-purpose product, it has been desired to provide a configuration that can reduce the number of parts and facilitate assembly while maintaining the function and satisfying the demand for miniaturization.

Japanese Utility Model Publication No.59-20118 Japanese Patent No. 3766669

  The present invention was created in view of the above circumstances, and used a floating wedge capable of reducing the number of parts and facilitating the assembly process while having substantially the same function as a conventional angle adjuster. It is an object of the present invention to provide a new angle adjusting tool and an angle adjusting assembly.

The present invention is an angle adjuster (see, for example, the angle adjuster 10 in the embodiment) that is mounted between members that swing relative to each other and varies and fixes the swing angle between the members.
A cover member (see, for example, the first arm first portion 111 when the cover member 12, the first arm second portion 112 in the embodiment is a first member),
A gear portion that rotates around an axis and has a tooth surface on the outer periphery (see, for example, the gear members 24 and 124 in the embodiment);
A first member that overlaps with the cover member and sandwiches the gear portion from both sides in the axial direction and pivots around the gear portion to rotate around the axial center (for example, the first arm 11 and the first arm first portion 111 in the embodiment). And the first arm second portion 112 when the cover member is used as a cover member),
A second member (for example, the second arm 13 and the first arm second portion 112 in the embodiment is connected to the gear portion on the outer side in the axial direction and rotates in cooperation with rotation around the axial center of the gear portion. 2nd arm second part 113 (2) etc. when it is considered as 1 member).

When the gear portion is sandwiched between the cover member and the first member, the angle adjuster moves between the cover member and the first member (for example, the receiving portion 11d and the protruding portion 12a in the embodiment). Formed in the moving space, a tooth surface that can mesh with a tooth surface on the outer periphery of the gear portion, and an edge portion of the moving space on the radially opposite side with respect to the gear portion A floating wedge member (see, for example, the floating wedge members 18 and 118 in the embodiment) having a contact surface that can be contacted and separated on the side,
The floating wedge member maintains the state in which the contact surface thereof is in contact with the edge of the moving space and the tooth surface of the floating wedge member meshes with the tooth surface of the gear portion. Locking one direction of rotation of the gear part with respect to the rotation in the opposite direction,
Further, the gear part includes a main body part having the tooth surface (see, for example, the gear part main body 12b in the embodiment) and a shaft part projecting outward in the axial direction from the main body part (for example, the shaft part 24c in the embodiment, etc. Shaft portion 124d when the first arm second portion 112 is used as the first member), the tip portion of the shaft portion has a non-circular cross-sectional shape,
The second member has an inner wall shape that fits with the tip portion of the shaft portion of the gear portion, and when fitted, an opening that restricts rotation around the shaft center with respect to the shaft portion (for example, the through-hole 13a in the embodiment, Through-hole 113 (2) a when the first arm second portion 112 is the first member is provided).

  According to the angle adjuster of the present invention, the angle using the floating wedge member can be obtained by simply arranging the five members of the cover member, the gear portion, the floating wedge member, the first member and the second member in the axial direction. The adjustment tool can be assembled, and the number of parts can be reduced and the assembly process can be facilitated. Further, according to the present angle adjuster, the second member can be assembled simply by providing an opening in the shape of an inner wall that fits with the tip of the gear portion, and inserting the shaft portion protruding from the first member into the opening. As a result, if the second member does not have a dedicated arm member, and the target member desired to swing is provided with an opening that fits the shaft portion of the gear portion, the target member (swing target) is directly connected to the second member. As well as reducing the number of parts and various utilizations.

  In the present angle adjuster, it is preferable that the tip end portion of the shaft portion of the gear portion has a polygonal star screw shape.

  The non-circular cross-sectional shape of the tip of the gear portion of this angle adjuster is preferably a polygonal star-shaped screw shape such as a hexalobular shape, and the second member has a through-hole or semi-through-hole opening fitted therein. It is preferable to have.

Further, the shaft portion of the gear portion has a root portion (see, for example, the root portion 24g in the embodiment) whose outer periphery is formed with a smooth surface on the main body portion side of the gear portion,
The first member has a through hole into which the shaft portion of the gear portion is inserted. When the shaft portion of the gear portion is inserted, the first member becomes a spot facing portion of the main body portion of the gear portion, and is formed on the inner wall of the through hole. It is preferable that the smooth surface of the root portion of the gear portion is positioned.

  According to the gear portion of this angle adjuster, since the base of the shaft portion is the smooth surface and the first member is the counterbore of the main body portion, the shaft portion is simply inserted into the through hole of the first member, and the protruding hexalo The first member can be smoothly pivoted with the gear portion and the second member can be rotated following the gear portion simply by inserting a tip end portion such as a viewer shape into the opening of the second member. Therefore, it is possible to provide a highly accurate angle adjuster while being easy to assemble with a small number of members.

More specifically, the cover member receives the main body portion of the gear portion when the first member and the gear portion are sandwiched, and the edge of the moving space where the contact surface of the floating wedge member abuts. Protrusions (see, for example, the protruding member 12a in the embodiment, the rigid member 114 when the first arm first part 111 is a cover member, etc.) in the embodiment,
When the first member sandwiches the cover member and the gear portion, the shaft portion of the gear portion is inserted into the through hole with the first member serving as a counterbore, and receives the convex portion of the cover member. And a concave portion (see, for example, the receiving portion 11d, the counterbore portion 111n when the first arm first portion 111 is the first member, etc. in the embodiment) that is supported from the outside in the radial direction to form the moving space. Is exemplified.

  According to this angle adjuster, a convex portion that contacts the contact surface of the floating wedge member is provided on the cover member side, and a concave portion that receives and supports the convex portion is provided on the first member side. In the case of this configuration, not only the number of members is reduced, but also the first member has a convex portion that receives the contact force from the floating wedge member and receives the direct contact force. Even if the member is formed of a material that is more flexible than the first member, the effect of approximating the rigid body can be obtained as a member that receives the contact force from the floating wedge member as a whole.

  Further, in the configuration of the above specific example, the protrusions of the cover member (see, for example, the protrusions 12a and 12a ′ in the embodiment) and the recesses of the first member are a pair of diametrically opposite to the shaft center. It is preferable that the moving space is formed at a position symmetrical to the axis when the cover member and the first member are overlapped and joined.

  According to the example of the angle adjuster, since the pair of floating wedge members are provided symmetrically with respect to the center of the axis, the contact force acting on the entire cover member is canceled and the cover member can be rotated in a well-balanced manner, and the cover member can be operated by the canceling effect The contact force that affects the overall deformation is reduced, and even a cover member made of resin or the like can function as a rigidity approximation. As a result, the range of material selection is expanded.

  In addition, the convex portion may be formed of a substantially rigid member that can be detached from the cover member (see, for example, the rigid member 114 in the embodiment).

  If the convex part of the cover member that receives the contact force of the floating wedge member is a separate, substantially rigid member that can be removed, the material of the cover member and the first member and the target member using the angle adjustment tool (swing target) The stress can be adjusted by replacing it with another member. Therefore, if a plurality of substantially rigid members functioning as convex portions are prepared, the angle adjustment tool corresponding to various target members can be manufactured by replacement thereof, and the manufacturing cost and the number of inventory management can be reduced.

Furthermore, you may combine the said angle adjustment tool as another structural example of this invention, for example, in order from an axial direction one side,
A first angle adjuster in which the cover member, the first member, the gear member, the floating wedge member, and the second member are disposed (for example, the first arm first portion 111 as a cover member in the embodiment, A first arm second part 112 as a first member, a second arm second part 113 (2) as a second member), and
A second angle adjuster in which the cover member, the first member, the gear member, the floating wedge member, and the second member are arranged in this order from the opposite side in the axial direction (for example, a first angle adjuster as a cover member in the embodiment). An angle adjustment assembly (for example, an implementation) in which one arm second part 112, a first arm first part 111 as a first member, and a second arm first part 113 (1) as a second member) are combined. An angle adjustment assembly 100 etc. in the form is also provided.

In this angle adjustment assembly,
The shaft portion of the gear portion protrudes on both sides in the axial direction,
The floating wedge member and the gear member are members common to the first angle adjuster and the second angle adjuster, respectively.
In the first angle adjuster, the cover member is configured by the first member of the second angle adjuster, and in the second angle adjuster, the cover member is the first angle adjuster of the first angle adjuster. Consists of one member,
The first member of the first angle adjuster and the first member of the second angle adjuster are coupled to face each other in the axial direction, and the second member of the first angle adjuster and the first member The second member of the second angle adjuster is coupled to face each other in the axial direction.

  This angle adjustment assembly is obtained by connecting the two angle adjustment tools described above in an overlapping manner from both sides in the axial direction. Therefore, the balance of force is improved, and the material selection is expanded because the strength and rigidity are also increased. Furthermore, in this angle adjustment assembly, each member can function as a single angle adjustment tool for each member. Specifically, the cover member of one angle adjuster can function as the first member of the other angle adjuster. As a result, the first member and the second member are connected to each other and the strength is increased only by connecting the first member and the second member while reducing the number of parts rather than simply facing the two angle adjusters. And strength higher than that of the material can be obtained.

  According to the angle adjustment tool and the angle adjustment assembly using the floating wedge of the present invention, it is possible to reduce the number of parts and facilitate the assembly process while having substantially the same configuration and function as the conventional angle adjustment tool. Possible specific configurations are provided.

It is an assembly exploded view which shows the connection of the 1st arm and 2nd arm of embodiment of the angle adjustment tool of this invention. It is a perspective view of the angle adjustment tool of FIG. FIG. 2 is a schematic plan view showing the operation of the floating wedge member of the angle adjuster of FIG. 1. FIG. 2 is a schematic plan view showing the operation of the floating wedge member of the angle adjuster of FIG. 1. It is an assembly exploded view showing connection of the 1st arm and the 2nd arm of an embodiment of an angle adjustment assembly of the present invention. FIG. 6 is a perspective view of the angle adjustment assembly of FIG. 5. FIG. 6 shows an exploded view of the angle adjustment assembly of FIG. 5 with the first arm member and the second arm member removed. FIG. 6 is an exploded view of a modified example of the angle adjustment assembly of FIG. 5 with the first arm member and the second arm member removed.

[An embodiment of the angle adjuster]
First, an embodiment of the angle adjuster of the present invention will be described. 1 is an exploded view of the angle adjuster 10, and FIG. 2 is a perspective view of the angle adjuster 10. In particular, FIG. 1 shows the arrangement and connection of the gear portion 24, the first arm 11, and the second arm 13 of the angle adjuster 10. An exploded view showing is shown. 3 to 4 are schematic plan views showing the movement of the floating wedge member 18 when the angle adjuster 10 is swung.

  The angle adjuster 10 is composed of seven members (six types), and includes a screw 22, first arm 11, second arm 13, and floating wedge member 14 in order of the axial center C1 direction with a smaller number of parts than the conventional angle adjuster. The gear member 24 and the cover member 12 are overlapped.

  First, the cover member 12 is formed of a substantially rigid body such as a metal material or a hard resin material. Here, the rigid body means one having a hardness that is substantially larger than that of the floating wedge members 18 and 18 ′, the gear member 24, the second arm 13, and the first arm 11 and that does not bend by hand. To do.

  The cover member 12 is a member that is overlapped with the first arm 11 in the axial center C1 direction and sandwiches the gear member 24 and the floating wedge members 18 and 18 'therebetween. The cover member 12 is provided with a pair of protrusions 12e that are hooked around the notch 11a around the tip of the first arm 11 and snapped around the cover member 12 at positions vertically opposite to the axis C1. 12 and the first arm 11 are overlapped and joined.

  The cover member 12 forms a concave portion 12g surrounded by an outer peripheral frame 12b so that the first arm 11 side is opened. Further, the recessed portion 12g having a semi-through hole at the center of the shaft center C1 is provided with a spot facing portion 12c at the center of the shaft center C1 at the upper portion thereof.

  The gear member 24 has a through hole 24d along the axis C1 and is a rotating body that rotates around the axis C1. Each of the gear members 24 has a substantially cylindrical protruding portion 24a in order from the cover member 12 side (visible in FIG. 1). A gear portion main body 24b, a root portion 24g, and a fitting portion 24c. The outer diameter of the protrusion 24a and the diameter of the spot facing 12c of the cover member 12 are substantially the same, and the protrusion 24a is received by the spot facing 12c and abuts against each other in a rotatable manner. The gear portion main body 24c has a diameter larger than that of the protruding portion 24a, and an axial surface (axial direction) tooth surface 24e is provided on the outer peripheral surface thereof. Further, the fitting portion 24c is smaller in diameter than the gear portion main body 24b and has a cross-sectional shape of a polygonal star screw shape such as a hexalo-bular (this shape is a through-hole 13a of the second arm member 13 described later). To fit).

  The first arm 11 is a flat plate member provided with a through hole 11f centered on the axis C1 and a pair of receiving portions 11d and 11d 'facing the through hole 11f at the tip. As will be described later, the receiving portions 11d and 11d 'receive the protrusions 12a and 12a and have a moving space for the floating wedge members 18 and 18'.

  When the cover member 12 is overlapped with the first arm 11, the fitting portion 24 c of the gear member 24 passes through the through hole 11 f provided at the end of the first arm 11. At this time, the root portion 24g between the fitting portion 24c and the gear portion main body 24c is inserted into the through hole 11f of the first arm 11, and the end surface of the gear portion main body 24c comes into contact with the first arm 11. Further, since the outer periphery of the root portion 24g is a smooth surface and the inner diameter is formed substantially the same as the inner diameter of the through hole 11f, the gear member 24 can rotate about the axis C1 while being inserted into the through hole 11f. .

  A pair of floating wedge members 18, 18 ′ are provided facing the axis C 1, and as shown in FIGS. 3 to 4 to be described later, a tooth surface meshing with the tooth surface 24 e on the outer peripheral surface on the tooth surface 24 e side of the gear member 24. 18a, 18a 'and notches 18b, 18b' are provided. Further, the cover member 12 protrudes toward the first arm 11 at a position facing the axis C1, and when the cover member 12 and the first arm 11 overlap each other, the receiving portion 11d of the first arm 11 is provided. , 11d ′ and a pair of protrusions 12a and 12a ′ that contact the radially outer inner wall. The floating wedge members 18, 18 ′ are provided with contact portions 18 c, 18 c ′ that contact the protrusions 12 a, 12 a ′ on the side opposite to the tooth surface 24 e of the gear member 24.

  The second arm 13 is a flat plate member that is overlapped on the opposite side of the cover member 12 from the first arm 11 and has a through hole 13a centered on the axial center C1 at the tip, and is formed on the inner wall of the through hole 13a. A fitting groove 13b that meshes with the fitting groove 24f of the shaft portion (fitting portion) 24c of the gear member 24 is provided. When the cover member 12 is overlapped with the first arm 11 with the gear member 24 and the floating wedge members 18 and 18 ′ sandwiched therebetween, the fitting portion 24 c of the gear member 24 projects from the through hole 11 f of the first arm 11. When the second arm 13 is further overlapped with the first arm 11, the fitting groove 24f of the fitting portion 24c protruding from the first arm 11 is engaged with and fixed to the fitting groove 13b of the through hole 13a of the second arm 13. The As a result, when the second arm 13 is rotated around the axis C1, the gear member 24 is also rotated in cooperation therewith.

  Further, the screw 22 is inserted from the outside along the axis C1 of the second arm 13, the shaft member 22a passes through the through holes 13a, 11f, and 24d, and the tip is caulked by the spot facing portion 12c of the cover member 12. As a result, the assembly of the angle adjuster 10 is completed by sandwiching the cover member 12, the floating wedge member 14, the gear member 24, the first arm 11, and the second arm 13 between the crimped tip and the seat portion 22b. To do. Although the second arm 13 is provided in the example of FIGS. 1 to 2, the angle adjuster 10 is a member provided with a hole similar to the through hole 13 a instead of the second arm 13 (for the purpose of swinging). The fitting portion 24c of the gear portion 24 protruding from the first arm 11 may be inserted directly into the member).

Next, the relationship between the rotation of the gear member 24 and the operation of the floating wedge members 18 and 18 'will be described (here, the floating wedge member 18 will be described). First, FIG. 3A shows a state in which the floating wedge member 18 is engaged with the gear member 24 and is in contact with the protruding portion 12a of the cover member 12, and the second arm 13 is rotated clockwise (FIG. 3A). No more rocking (locked) in the opposite direction of the arrow. When the second arm 13 is swung counterclockwise (in the direction of the arrow in FIG. 3A) from this state, the contact surface 18c of the floating wedge member 18 that meshes with the tooth surface 24e as shown in FIG. 3B. Is the protrusion 12a
A slight gap d is formed between the contact portion 14a and the contact portion 14a. When the second arm 13 further swings counterclockwise (in the direction of the arrow in FIG. 3 (a)), as shown in FIG. 3 (c), the notch portion 18b of the floating wedge member 18 is formed on the inner wall of the receiving portion 11d. The tooth surface 18a of the floating wedge member 18 contacts the stepped portion 11d (3), and the tooth surface 18a of the floating wedge member 18 is separated from the tooth surface 24e of the gear member 24 by the gap d. You can get over the sound with a click.

  The notch 18b of the floating wedge member 18 is formed at the rear edge of the tooth surface 18a of the floating wedge member 18, and the stepped portion 11d (3) of the receiving portion 11d is an arc surface 11d on the inner side of the moving space. (1) is formed so as to be in contact with the notch 18b.

  Therefore, the floating wedge member 18 has the tooth surface 18a meshed with the gear member 24, the contact surface 18c abutted on the contact portion 14a, and sandwiched between the gear member 24 and the protruding portion 12a. By the wedge action 18, the second arm 13 can freely swing in one direction with respect to the first arm 11 and restrict swinging in the other direction. That is, the first arm 11 and the second arm 13 can be maintained at an arbitrary folding angle (inclination angle).

  Then, the second arm 13 is further swung from FIG. 3 (c), and when the second arm 13 is swung to the limit beyond a predetermined angle with respect to the first arm 11 as shown in FIG. 4 (a), The floating wedge member 18 is brought into contact with and pressed against the front edge of the floating wedge member 24 by a push-back protrusion 24h provided on one end side of the gear member 24 (tooth forming portion).

  As shown in FIG. 4B, when the second arm 13 is further swung from the limit swung state (maximum folded state), the floating wedge member 18 (returned by the push-back protrusion 24h) ( The notch portion 18b) gets over the stepped portion 11d (3) and is accommodated in the retracting space portion 11d (2) of the moving space of the floating wedge member 18 (formed by the receiving portion 11d and the protruding portion 12a). The meshing state between the tooth surface 18a of the member 18 and the gear member 24 is released. That is, the floating wedge member 18 accommodated in the retreat space 11d (2) is in a state separated from the gear member 24.

  Accordingly, the second arm 13 is free with respect to the first arm 11 and can be swung clockwise (in the direction opposite to the arrow in FIG. 3A) to return to the maximum deployed state. When the second arm 13 is swung to the maximum unfolded state at a predetermined angle with respect to the first arm 11, as shown in FIG. 4C, the retreat space 11d (2) is pushed by the push-out protrusion 24i. The toothed surface 18a and the gear member 24 are brought into the meshing state again by extruding the floating wedge member 18 accommodated in the container, and the state shown in FIG.

[An embodiment of angle adjustment assembly]
Moreover, the angle adjustment assemblies 100 and 200 of the embodiment of the angle adjustment assembly having a function of combining the angle adjustment tool of the present invention as a modification of the angle adjustment tool 10 of the first embodiment will be described. 5 is an exploded view of the angle adjustment assembly 100, FIG. 6 is a perspective view of the angle adjustment assemblies 100 and 200, and FIG. 7 is an exploded view of the angle adjustment assembly 100 with the first arm member and the second arm member removed. FIG. 8 is an exploded view in which the first arm member and the second arm member of the angle adjustment assembly 200 are removed as in FIG.

  In the angle adjustment assemblies 100 and 200, the tips 113 (1) d and 113 (2) d and the tips 111j and 112g are inserted into two tubular members (not shown) that are desired to be rocked and fixed, respectively. It is utilized as a jig for connecting both tubular members.

  As shown in FIGS. 5 to 7, the angle adjustment assembly 100 includes seven types of ten members, generally screws 122 and 123, a second arm first portion 113 (1), a first arm first portion 111, a floating wedge. A member 118, a rigid member 114, a resilient member 116, a gear member 124, a first arm second portion 112, and a second arm second portion 113 (2) are configured.

  The first arm first portion 111 and the first arm second portion 112 have a recess 111 i and a recess 112 d (not shown), respectively, so as to form one receiving space when overlapped with each other. The first arm first part 111 and the first arm second part 112 can overlap each other with their planar portions facing each other, and connect the through hole 111i and the through hole 112f, which are viewed from each other in the overlapped state, with a screw 123. As a result, they are joined together to form one first arm.

  When the first arm first part 111 and the first arm second part 112 are overlapped and joined, the floating wedge member 118, the rigid member 114, the resilient member 116, and the gear member 124 are sandwiched. The gear member 124 has a through-hole 124d, and the fitting portion 124b and the fitting portion (projecting portion) 124c of the gear portion main body 124g are integrally connected, and the fitting portions (protruding portions) 124c and 124d of the gear portion main body 124g. Is inserted into the through-holes 111m and 112c of the first arm first part 111 and the first arm second part 112, respectively, and the gear member 124 can be rotated around the axis C2 in the spot facing parts 111n and 112n.

  The floating wedge member 118 is provided with a tooth surface 118a that meshes with the tooth surface 124g of the gear member 124 and a contact portion 118c that contacts the rigid member 114, as in the above-described embodiment. The rigid member 114 is made of an elastic material such as resin and is embedded in the recesses 111d and 112d of the first arm first part 111 and the first arm second part 112. The rigid member 114 is formed of a metal member, a resin member, or the like that does not bend by hand as in the angle adjuster 10 shown in FIGS.

  A resilient member 116 is mounted between the abutting portion 118c of the floating wedge member 118 and the rigid member 114 so as to prevent the floating wedge member 118 from falling. The floating wedge member 118 and the gear member 124 are made of metal or hard resin, and the second arm 131 and the rigid member 114 may be integrally formed.

  When the first arm first part 111 and the first arm second part 112 are coupled, the gear member 124 sandwiched between them is supported by the through holes 111m and 112c on both sides, so that the force balance is good. Durability is also improved. In addition, after the first arm first part 111 and the first arm second part 112 are coupled, the second arm first part 113 (1) and the second arm second part 113 (2) have an axis C2. It is sandwiched from both sides in the direction, and both are joined by inserting screws 122 into the through holes 113 (1) c and 113 (2) c and caulking the tips. At this time, the fitting portions 124c and 124d on both sides of the gear member 124 are passed through the through holes 113 (1) a and 113 (2) a, and are fitted into the inner wall grooves 113 (1) b and 113 (2) b. . Therefore, when the gear member 124 rotates, the second arm first portion 113 (1) and the second arm second portion 113 (2) also rotate as the integrated first arm 113 following the rotation.

  Accordingly, in the angle adjuster 100, the integrated first arms 111 and 112 and the second arms 113 (1) and (2) can be rotated and locked around the axis C2, and the distal ends 113 (1) d and 113 (2) thereof. ) It is inserted and fixed to a tubular member (not shown) serving as a swinging objective member at d and the tips 111j and 112g.

  An angle adjustment assembly 200 shown in FIG. 8 is a modified example of the angle adjustment assembly 100 shown in FIG. 5 described above, and its configuration and use example are generally the same as those of the angle adjustment assembly 100, but a resilient means is provided. There are no differences. In the angle adjuster 200, the elastic means is integrally coupled with the rigid member 214 and abuts on the rear edge side of the abutting surface 218 c of the floating wedge member 218. In the case of this angle adjuster 200, the number of parts can be reduced by one more than the angle adjustment assembly 100, and the assembly process is facilitated.

  As mentioned above, although the embodiment about the angle adjustment tool and angle adjustment assembly of this invention was described, this invention is not limited to this, It deviates from the mind and teaching as described in a claim, a specification, etc. It will be understood by those skilled in the art that other modifications and improvements can be obtained without departing from the scope.

DESCRIPTION OF SYMBOLS 10 Angle adjustment tool 11 1st arm 12 Cover member 13 2nd arm 18, 118, 218 Floating wedge member 111 1st arm 1st part 112 1st arm 2nd part 113 (1) 2nd arm 1st part 113 (2 ) Second arm first portion 114, 214 Rigid member 116 Bounce member (bounce means)
11d (2) Retreat space 24, 124, 224 Gear member (gear part)
Axis center C1, C2

Claims (7)

An angle adjuster that is mounted between members that swing relative to each other and varies and fixes the swing angle between the members.
A cover member;
A gear portion that rotates around an axis and has a tooth surface on the outer periphery;
A first member that overlaps with the cover member and sandwiches the gear portion from both sides in the axial direction to pivot around the gear portion and rotate about the axial center;
A second member that is coupled to the outer side in the axial direction with the gear portion and rotates in cooperation with rotation around the axial center of the gear portion;
When the gear part is sandwiched between the cover member and the first member, a movement space is formed by the cover member and the first member, and a tooth surface on the outer periphery of the gear part is formed in the movement space. A floating wedge member having a tooth surface that can mesh with the gear portion and a contact surface that can be contacted / separated on the edge side of the moving space on the opposite side in the radial direction with respect to the gear portion,
The floating wedge member maintains the state in which the contact surface thereof is in contact with the edge of the moving space and the tooth surface of the floating wedge member meshes with the tooth surface of the gear portion. Locking one direction of rotation of the gear part with respect to the rotation in the opposite direction,
Further, the gear portion includes a main body portion having the tooth surface and a shaft portion projecting axially outward from the main body portion, and a tip portion of the shaft portion has a non-circular cross-sectional shape,
An angle adjuster, wherein the second member has an inner wall shape that fits with a tip portion of a shaft portion of the gear portion, and an opening that restricts rotation around the shaft center with respect to the shaft portion when the fitting is fitted. The angle adjusting tool according to claim 1, wherein a tip portion of the shaft portion of the gear portion has a polygonal star-shaped screw shape.
The shaft part of the gear part has a root part whose outer periphery is formed with a smooth surface on the main body part side of the gear part,
The first member has a through hole into which the shaft portion of the gear portion is inserted. When the shaft portion of the gear portion is inserted, the first member becomes a spot facing portion of the main body portion of the gear portion, and is formed on the inner wall of the through hole. The angle adjuster according to claim 1 or 2, wherein a smooth surface of a root portion of the gear portion is positioned. The cover member receives a main body portion of the gear portion when the first member and the gear portion are sandwiched therebetween, and a convex portion that forms an edge portion of the moving space with which a contact surface of the floating wedge member abuts. Provided,
When the first member sandwiches the cover member and the gear portion, the shaft portion of the gear portion is inserted into the through hole with the first member serving as a counterbore, and receives the convex portion of the cover member. The angle adjuster according to any one of claims 1 to 3, further comprising a concave portion that is supported from a radially outer side and forms the moving space. When the convex part of the cover member and the concave part of the first member are respectively provided in a position opposite to each other in the radial direction with respect to the shaft center, the cover member and the first member are overlapped and joined. The angle adjusting bracket according to claim 4, wherein the moving space is formed at a position symmetrical with respect to the axis.
  The angle adjusting bracket according to claim 5, wherein the convex portion is configured by a substantially rigid member that is detachable from the cover member. In order from one side in the axial direction,
The angle adjuster according to any one of claims 1 to 6, wherein the cover member, the first member, the gear member, the floating wedge member, and the second member are disposed.
The said cover member, the 1st member, the said gear member, the said floating wedge member, and the said 2nd member are arrange | positioned in order from the axial direction opposite side. An angle adjustment assembly in which the angle adjustment tool is combined,
The shaft portion of the gear portion protrudes on both sides in the axial direction,
The floating wedge member and the gear member are members common to the first angle adjuster and the second angle adjuster, respectively.
In the first angle adjuster, the cover member is configured by the first member of the second angle adjuster, and in the second angle adjuster, the cover member is the first angle adjuster of the first angle adjuster. Consists of one member,
The first member of the first angle adjuster and the first member of the second angle adjuster are coupled to face each other in the axial direction, and the second member of the first angle adjuster and the first member An angle adjustment assembly, wherein the second member of the second angle adjuster is coupled to face each other in the axial direction.