JPH04228014A - C-groove engaging tool - Google Patents

Abstract

PURPOSE:To obtain a C-groove engaging tool enabling easy insertion of a checking part into a C-groove and easy rotation in the fixing direction to fix the checking part to both sides of the C-groove by protruding an arm from a checking part having a specific dimension, and attaching a wire-fixing part near the end of the arm. CONSTITUTION:The objective C-groove engaging tool 1 is composed of a checking part 10 and an arm 11. The checking part 10 to be inserted into the C-groove has a width L3 narrower than the inner width L2 of the C-groove 2 and a length L4 shorter than the width L2 and longer than the opening width L1. When the checking part is inserted into the C-groove, the arm is protruded from the opening and a turning moment is applied to the checking part by the pulling force of a wire 4 fixed to a fixing part 101. Both ends 103, 104 of the checking part is firmly engaged to both sides 22, 23 of the C-groove in turned state.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a C-groove engagement tool. This C-groove engagement tool is used for, for example, a sheet (hereinafter referred to as a house) that covers a frame that becomes the skeleton of a vinyl house (hereinafter referred to as a house).
It is used to apply tension to a wire such as a string that holds and holds a house cover in place.

0002

[Prior Art] As a conventional C-groove engagement tool, for example, FIG.
A linear engagement tool 5 shown in is used. This linear engagement tool 5 has a first locking part end 50 that is linear along the C groove 2, and a direction that moves away from each other on the same plane from both ends with this first locking part end 50 as a reference. It consists of two straight line parts 51 and 52 extending upward, and two substantially S-shaped second locking parts 53 and 54 rising upward from their tips.

When the linear engagement tool 5 is to be engaged with the C groove, the two second locking ends 53 and 54 are manually operated to connect the C groove.
The opening angle θ is increased by pushing the first locking end portion 5 apart in directions S1 and S2 that move away from each other in the direction along the groove 2.
0 and the second locking ends 53, 54, and then the two second locking ends 53, 54 returns to its original shape by the elastic return action of the linear engagement tool 5 itself, and is locked in the C groove 2.

Therefore, by tying strings to the second locking ends 53 and 54 of the linear engaging tool 5 while housed in the C groove 2, the opening angle θ is narrowed and the second locking end 5
The vertical distance L of 3 and 54 is extended, and the C groove 2 is more strongly locked.

[0005]

[Problems to be Solved by the Invention] The conventional linear engagement tool 5 has a structure in which when tensioning the string 4 for restraining the sheet 33 covering the arc-shaped frame forming the roof of the house ( (see FIG. 20), the following operations are performed. That is, (
1) The two second locking ends 53 are applied to the string 4, which has been placed in a band shape along the outer peripheral surface of the sheet 33 and one end of which is fixedly held, while applying tension by pulling the other end thereof. , 5
Connect to 4.

(2) Alternatively, the other end of the string 4 is tied in advance to the two second locking ends 53 and 54 of the C-groove engagement tool, and the string 4 is pulled in one direction while applying tension. The opening angle θ of the second locking end portions 53 and 54 is widened, and the shape of the engagement tool 5 is expanded.
Install it in groove 2. Here, while pulling the other end of the string 4 with a certain strength, it is tied to the second locking ends 53 and 54 as in the case (1) above, or it is tied to the second locking end portions 53 and 54 as in the case (2) above. The operation of widening the space between the toes 53 and 54 is difficult and troublesome.

Furthermore, when the string 4 tied to the second locking ends 53, 54 is not held in tension in the vertical direction between them, that is, in the diagonal direction, the second
The tension applied to the locking ends 53 and 54 is unbalanced C
The entire linear engagement tool 5 may slide sideways within the groove 2. Furthermore, with the reupholstery of the sheet 33, the linear engagement tool 5 is
When removing from inside the groove 2, the string 4 tied to the second locking ends 53 and 54 must be untied to allow the opening angle θ to be increased, and the operation of untying the string 4 is difficult. It is difficult, time consuming and has low workability.

The conventional linear engagement tool 5 has the above-mentioned problems.

[0009]

[Means for Solving the Problems] One aspect of the present invention is to form a C-groove in which the cross-sectional shape of the groove is a constant C-shape, and as it goes inward from the opening, the inside expands on both sides and has an internal width wider than the opening width. It is an engaging tool to be locked, and the width in the x direction is narrower than the internal width of the C groove, and the width in the y direction in a direction forming a predetermined angle with the x direction is narrower than the internal width of the C groove. a locking part inserted into the C groove wider than the opening width of the locking part, and a locking part that is integral with the locking part and projects from the opening when the locking part is inserted into the C groove; at least y from the center of
A wire rod such as a string is fixed at a predetermined distance in the direction, and the tensile force of the wire rod causes a rotational moment from the x direction to the y direction to act on the locking portion with the longitudinal direction of the C groove as the rotation axis. and an arm portion having a fixing portion, and after the locking portion is inserted into the C groove, the rotation moment is applied to the arm portion to rotate the locking portion within the C groove. The C-groove engagement tool is characterized in that both ends of the stop portion in the y direction are engaged with both sides of the internal width of the C-groove.

Another aspect of the present invention is that the cross-sectional shape of the groove is a constant C-shape, and as it goes inward from the opening, the inside expands on both sides and is locked in a C-groove having an internal width wider than the opening width. It is an engaging tool, and the width in the x direction is narrower than the internal width of the C groove, and the width in the y direction in a direction forming a predetermined angle with the x direction is the C groove.
a locking part inserted into the C groove that is wider than the internal width of the groove, and a locking part that is integral with the locking part and projects from the opening when the locking part is inserted into the C groove, and the locking part A wire rod such as a string is fixed at a predetermined distance from the center of the part in at least the y direction, and the tensile force of the wire causes the locking part to rotate from the x direction to the y direction in a plane including the x direction and the y direction. and an arm portion having a fixing portion on which a moment acts. After the locking portion is inserted into the C groove, the rotation moment is applied to the arm portion to move the locking portion into the C groove. The C-groove engagement device is characterized in that the C-groove engaging tool is rotated within the C-groove so that both ends of the engagement portion in the y direction are engaged with both ends of the internal width of the C-groove.

[0011]

[Operation] The C-groove engaging tools of the first and second inventions are attached to both ends of a wire rod of a length suitable for holding down the sheet of a vinyl house, for example, before being attached to the C-groove. That is, each end of the wire is tied to the fixing part of each C-groove engagement tool. Next, this wire is placed in advance at the desired position on the surface of the sheet. And C on one end side of the wire
An operation is performed to lock the groove engagement tool (hereinafter referred to as the first C groove engagement tool) in the C groove. In this case, the operator grasps the first C groove engagement tool with his/her hands, and holds both ends of the locking part in the x direction.
It is inserted into the C-groove from the opening of the C-groove, aligning the direction parallel to both ends of the groove. Then, in the case of the first invention, after inserting the locking part into the C groove, the wire is pulled in a direction perpendicular to the C groove to make it tense, thereby applying a rotational moment to the arm part and moving the locking part into the C groove. Rotate in the direction of rotation with the longitudinal direction of the groove as the rotation axis. Then, the y direction of the engagement tool is C
The direction is perpendicular to the longitudinal direction of the groove (also coincides with the direction in which the wire extends). As a result, one end of the locking portion in the direction in which the wire extends in the y direction is pressed against the bottom surface of the side portion within the C groove, and the other end is pressed against the back surface of the opening side of the other side within the C groove to be locked.

In the case of the second invention, after the locking portion is inserted into the C groove, the wire is tensioned by pulling it in a direction perpendicular to the C groove, thereby applying a rotational moment to the arm portion, and thereby tightening the locking portion. C
Rotate within the groove in a plane that includes the x and y directions. Then, the y direction of the engagement tool becomes a direction perpendicular to the longitudinal direction of the C groove (which also coincides with the direction in which the wire extends). As a result, both ends of the locking portion in the y direction are pressed and locked against both ends within the C groove.

Continuing, the C-groove engagement tool (hereinafter referred to as
It is called the second C groove engagement tool. ) is engaged with the C groove. In this case, the worker grasps the second C-groove engagement tool with his/her hand and tensions the wire between it and the first C-groove engagement tool that was previously engaged in the C-groove by pulling it in a direction perpendicular to the C-groove. At the same time, the locking portion is inserted into the C groove using the same operating procedure as in the above case. Thereafter, when the operator releases his/her hand from the second C-groove engaging tool, a rotational moment is applied to the arm by the tensioned wire, causing the locking part to rotate. At this time, in the case of the second C-groove engagement tool of the first invention, both ends of the locking portion in the y direction are pressed against both ends within the C-groove to lock them. 2C of the second invention
In the case of a groove engagement tool, both ends of the locking part in the y direction are pressed against both ends of the C groove to lock them.

[0014] The C-groove engaging tool which is locked in the C-groove can be unlocked by applying a rotational moment to the arm in the opposite direction to that at the time of locking.

[0015]

[Effect] The C groove engagement tool of the first invention has a width in the x direction of the C groove engaging tool of the first invention.
y in a direction that is narrower than the internal width of the groove and makes a predetermined angle with the x direction
a locking part inserted into the C-groove whose width in a direction is narrower than the internal width of the C-groove and wider than the opening width of the C-groove; When inserted, a wire such as a string is fixed at a position that projects from the opening and is spaced at least a predetermined distance from the center of the locking part in the y direction, and the tensile force of the wire causes the C groove to be inserted into the locking part. It consists of an arm part having a fixed part with the longitudinal direction of the axis of rotation acting as a rotational moment from the x direction to the y direction. For this reason, the C-groove engagement tool has a wire rod fixed to the fixed part of the arm, and
By aligning both ends of the direction parallel to both sides of the C groove, the locking part can be easily inserted into the C groove. In addition, the C-groove engagement tool uses the moment generated by the tension of the wire fixed to the fixed part of the arm to easily rotate the locking part in the locking direction after being inserted into the C-groove. can. This locking portion can reliably lock both ends in the y direction to the both sides after rotation.

[0016] In the C-groove engagement tool of the second invention, the width in the x direction is narrower than the internal width of the C groove, and the width in the y direction in a direction forming a predetermined angle with the x direction is wider than the internal width of the C groove. a locking portion inserted into the C groove; a locking portion that is integral with the locking portion, projects from the opening when the locking portion is inserted into the C groove, and extends at least y from the center of the locking portion; A wire rod such as a string is fixed at a predetermined distance in the direction, and the tensile force of the wire rod causes the locking part to move from the x direction to the y direction within a plane including the x direction and the y direction.
It consists of an arm portion having a fixed portion on which a rotational moment in the direction is applied. For this reason, the C-groove engagement tool has the wire rod fixed to the fixed part of the arm part, and by aligning both ends of the locking part in the x direction in a direction parallel to both ends in the C-groove, The locking part can be easily inserted into the C groove. In addition, the C-groove engagement tool uses the moment generated by the tension of the wire fixed to the fixed part of the arm to easily rotate the locking part in the locking direction after being inserted into the C-groove. can. When this locking portion rotates, both ends in the y direction push apart both ends within the C groove, so that the locking portion can be reliably locked by the reaction force.

[0017]The C-groove engaging tools of the first and second inventions only utilize the rotational moment in the opposite direction to that at the time of attachment when removing the locking part from the C-groove, and the arm part is fixed. There is no need to unravel the wire tied to the section. Therefore, the C-groove engagement tools of the first and second inventions can be easily installed and removed within the C-groove, improving work efficiency, and can be securely fixed and held within the C-groove. .

[0018]

[Example] (Example 1) C of Example 2 shown in FIGS. 1 to 8
The groove engaging tool 1 is to be locked in a C groove 2 described below, and is composed of a locking part 10 and an arm part 11. The C-groove 2 has a constant C-shaped cross-section, and as it goes from the opening 20 toward the inner bottom 21, the inside expands toward both sides 22 and 23, and has an internal width L2 wider than the opening width L1 of the opening 20. Motsu. This C groove 2 is
Formed in rain gutters that catch rainwater. As shown in Fig. 8, rain gutters include a valley gutter 2A installed at the boundary (trough) 31 between the arc-shaped frames 30 and 30 that form the frame of the roof of the vinyl house 3, and an arc-shaped gutter 2A. It is formed in the side gutter 2B installed on one side 32 of the frame 30.

The locking portion 10 of the C-groove engagement tool 1 is a thick metal plate processed into a substantially heart-shaped shape to form a portion to be inserted into the C-groove 2. That is, the locking portion 10 is formed so that the width L3 in the x direction (maximum width between both ends 101 and 102 in the x direction) is narrower than the internal width L2 of the C groove 2, and the width L3 in the x direction (maximum width between both ends 101 and 102 in the Width (both ends 103 in the y direction,
104) is wider than the opening width L1 of the C groove 2. Further, the locking portion 10 has both ends 101 and 102 in the x direction having a gentle arc shape, and the y
Both ends 103 and 104 in the direction are formed in an R shape. The arm portion 11 is integral with the locking portion 10, and when the locking portion 10 is inserted into the C groove 2, the arm portion 11 extends approximately from the side opposite to the − end 103 in the y direction with respect to the locking portion 10. Third
It extends upward at an angle of 0 degrees and protrudes from the opening 20 of the C groove 2. A fixing part 110 is formed in the arm part 11 at a position spaced apart from the center of the locking part 10 by a predetermined distance in the y direction, and the fixing part 110 is a mounting hole in which the string 4 is fixed.

[0020] The C-groove engaging tool 1 of the first embodiment formed in this manner is attached to the arcuate frame 30 before being attached to the C-groove 2 formed in the valley gutter 2A and the side gutter 2B. A string 4 (of a length suitable for holding down the sheet 33 covered with
(see FIG. 8), one end 40 and the other end 41 are the arm portions 1, respectively.
1 fixed part 110. Then, with the string 4 placed on the sheet 33, the operator grasps the C-groove engagement tool 1 on one end side with his/her hand, and
1 and 102 in a direction that is almost parallel to both sides 22 and 23 of the C groove 2, and insert them into the C groove 2 (Figs. 3 and 5).
, see Figure 6). After this, the operator grasps the string 4 and tensions it by pulling its one end 40 in a direction perpendicular to the C groove 2, so that the locking part 10 is attached to the locking part 10 via the arm part 11 with the longitudinal direction of the C groove being the axis of rotation. A rotational moment acts from the x direction to the y direction. Then, the locking part 10 rotates within the C groove 2.
One end 103 and the other end 104 in the direction are pressed and locked against the inner bottom surface 220 side of the one side portion 22 in the C groove 2 and the back surface 230 on the opening side of the other side portion 23 (see FIGS. 4 and 7). . Subsequently, the operator grasps the C-groove engagement tool 1 on the other end side with his/her hand, and pulls the other end 41 side of the string 4 in a direction perpendicular to the longitudinal direction of the C-groove 2 to apply tension to the locking part 10. Both ends 10 in the x direction of
1 and 102 in the direction parallel to both sides 22 and 23 in the C groove 2, and insert them into the C groove 2 (Figs. 3 and 5).
, see Figure 6). After that, when the operator releases his hand from the C-groove engagement tool 1, the tension of the string 4 against the arm 11 causes the locking part 10 to rotate in the longitudinal direction of the C-groove via the arm 11. A rotational moment acts on the shaft from the x direction to the y direction. Then, the locking part 10 rotates within the C groove 2 and connects one end 103 and the other end 104 in the y direction to one side 22 within the C groove 2.
The inner bottom surface 220 side and the back surface 23 on the opening side of the other side portion 23
0 to lock it (see FIGS. 4 and 7).

[0021] Also, by applying a rotational moment opposite to that in the above case to the C-groove engagement tool 1 and using the reverse operation procedure, the string 4 tied to the fixed part 110 of the arm part 11 is loosened. The locking portion 10 can be disengaged from the C-groove 2 and the C-groove engagement tool 1 can be removed from the C-groove 2 without any trouble. In this way, according to the C-groove engagement tool 1 of the first embodiment, the locking portion 1 is
0 into the C groove 2, the locking part 10 has a width L3 in the x direction.
Since it is formed narrower than the internal width L2 of the C groove 2, it is easy to insert it. Furthermore, the rotation moment allows smooth rotation within the C groove 2. Since the width L4 of the locking part 10 in the y direction, which is substantially perpendicular to the x direction, is wider than the opening width L1 of the C groove 2, after the rotation, the inner bottom surface of the one side part 22 in the C groove 2 220 side and the back surface 230 on the opening side of the other side portion 23. Also, C
To release the locking state of the locking portion 10 from the inner bottom surface 220 side of the one side portion 22 and the back surface 2302 on the opening side of the other side portion 23 when removing from the groove 2, perform the operation opposite to the above case. All you have to do is follow the steps.

[0022] Therefore, the C groove engaging tool 1 of the first embodiment has a C groove
Attachment to and removal from the groove 2 can be performed easily and quickly, and work efficiency can be improved. (Example 2) The C groove engaging tool 1A of Example 2 shown in FIGS. 9 to 14 has the following C groove 2.
It consists of a locking part 10A and an arm part 11A. The C-groove 2 has a constant C-shaped cross-section, and as it goes from the opening 20 toward the inner bottom 21, the inside becomes smaller at both side ends 22a, 2.
3a direction, and has an internal width L2 wider than the opening width L1 of the opening 20. This C groove 2 is formed in a rain gutter that receives rainwater. As shown in Fig. 6, the rain gutter is an arc-shaped frame 30 that forms the skeleton of the roof of the vinyl house 3.
Valley gutter 2A installed at the boundary (tanibe) 31 between and 30,
Side gutter 2B installed on one side 32 of arc-shaped frame 30
is formed.

The locking portion 10A of the C-groove engagement tool 1A is a thick metal plate processed into a flat shape to form a portion to be inserted into the C-groove 2. That is, the locking portion 10A
The width L3 in the x direction is smaller than the internal width L2 of the C groove 2, and the width L4 in the y direction perpendicular to the x direction is larger than the internal width L2. Further, the locking portion 10A has R (R) portions 10a and 10 between the width L3 and the width L4.
b is formed. The arm portion 11A is connected to the locking portion 10A.
When the locking portion 10A is inserted into the C-groove 2, it extends upward at an angle of about 30 degrees with respect to the locking portion 10A and projects from the opening 20 of the C-groove 2. This arm portion 11A is formed with a fixing portion 110, which is a mounting hole in which the string 4 is fixed, at a position spaced apart from the center of the locking portion 10A by a predetermined distance in the y direction.

The C-groove engaging tool 1A of the embodiment formed in this manner has a sheet covering the arcuate frame 30 over the fixing portion 110 of the arm portion 11A before being attached to the C-groove. One end 40 and the other end 41 of a string 4 having a length suitable for restraining the string 33 are tied together. Then put string 4 on sheet 33
With the C-groove engagement tool 1A placed on the top, the operator grasps the C-groove engagement tool 1A on one end side with his/her hand, and pulls both ends 101a of the locking portion 10A in the x direction.
, 102a in the direction parallel to both ends 22a and 23a of the C groove 2, and insert them into the C groove 2 (Figs. 9 and 1
1, see Figure 12). Thereafter, the operator grips the string 4 and tensions it by pulling its one end 40 in a direction perpendicular to the C-groove 2, thereby applying a rotational moment to the arm portion 11A. Then, the locking part 10A rotates within the C groove 2, and both ends 103a and 104a of the locking part 10A in the y direction are pressed against both ends 22a and 23a in the C groove 2 to lock them (FIG. 10).
, see Figure 13). Subsequently, the operator grasps the C-groove engagement tool 1A on the other end side with his/her hand and pulls the other end 41 side of the string 4 in a direction perpendicular to the C-groove 2 to apply tension, and then pull the locking portion 10A in the x direction. Both ends 101a and 102a are connected to both ends 22a in the C groove 2,
23a, and insert it into the C groove 2 (see FIGS. 9, 11, and 12). After this,
When the operator releases his hand from the C-groove engagement tool 1A, the arm portion 11
A rotational moment acts on A due to the tension of the string 4. Then, the locking part 10A rotates within the C groove 2, and the both ends 103a and 104a of the locking part 10A in the y direction are pressed against the both ends 22a and 23a in the C groove 2 to lock them (
(See Figures 10 and 13).

[0025] Also, by applying a rotational moment opposite to that in the above case to the C-groove engaging tool 1A and using the reverse operation procedure, the string 4 tied to the fixed part 110 of the arm part 11A is loosened. The locking portion 10A can be disengaged from the C-groove 2, and the C-groove engagement tool 1A can be removed from the C-groove 2 without any trouble. In this way, C
According to the groove engagement tool 1A, when inserting the locking part 10A into the C groove 2 during attachment to the C groove 2, the locking part 10A is
Since the width L3 in the direction is narrower than the internal width L2 of the C groove 2, insertion becomes easier. Furthermore, the locking part 10A
The width L4 in the y direction perpendicular to the x direction is the C groove 2.
Since it is wider than the internal width L2 of C groove 2, when it rotates within C groove 2 due to the rotational moment, both ends 22a and 23a of C groove 2
Since it can be locked in the expanded state, it is securely held in place. In addition, in order to release the locking state of the locking portion 10A from both side portions 22a and 23a of the C-groove 2 at the time of removal from the C-groove 2, it is sufficient to perform the operation procedure reverse to the above case.

[0026] Therefore, the operation of attaching and removing the C-groove engaging tool 1A to the C-groove 2 can be performed easily and quickly, and work efficiency can be improved. (Example of use of operation auxiliary tool) Next, when performing an operation to lock the C groove engagement tool 1A in the C groove 2, as shown in FIG.
An example of use using the installation operation auxiliary tool 6 shown in FIG.

As shown in FIG. 17, the operation assisting tool 6 is
A rod-shaped body 60, a lever-shaped tip 61 formed at the tip of the rod-shaped body 60, and a tip 61 and a rear end 6 of the rod-shaped body 60.
2, the attachment part 63 is an engagement hole that removably holds the tip 111 of the arm part 11A of the C-groove engagement tool 1A. With this, when inserting the locking part 10A of the C-groove engagement tool 1A into the C-groove 2, insert the lever-shaped tip 61 of the operation assisting tool 6 into the C-groove 2, and 22a, 23a, and while pushing it apart so that the internal width L2 becomes wider, the locking portion 10 of the C-groove engagement tool 1A is
If A is inserted into the C groove 2, the locking part 10A can be quickly inserted into the C groove 2 even when strong tension is applied to the string 4 fixed to the fixed part 110 of the arm part 11A, and the locking part 10A can be inserted into the C groove 2 quickly. can be stopped.

The sheet 3 covers the arc-shaped frame 30 that forms the frame of the roof of a vinyl house, etc.
3 is restrained by the string 4, which has a higher tension than when the operation assisting tool 6 is not used, so that it can be reliably fixed and held in a fixed position. Note that when removing the C-groove engagement tool 1A from the C-groove 2 using the operation auxiliary tool 6, the attachment portion 63 is attached to the tip 111 of the arm portion 11A of the C-groove engagement tool 1A.
and insert the lever-shaped tip 61 into the C groove 2.
One of the inner side ends 22a and 23a is pushed out so that the inner width L2 becomes wider. As a result, the locking portion 10A of the C-groove engagement tool 1A is unlocked at both ends 103a and 104a in the y direction, and when a rotational moment is applied to the arm portion 11A in the opposite direction to that at the time of locking, the locking portion 10A is released. Both sides 101a, 1 in the x direction of 10A
02a can be taken out to the outside by making it parallel to the C groove.

As described above, the C-groove engagement tool 1A can be smoothly attached to and detached from the C-groove 2 with little effort by using the operation assisting tool 6.
The effect of shortening the working time and improving the workability can be obtained. (Modifications) Modifications of the C-groove engagement tool 1A of Example 2 are shown in FIGS. 16, 17, and 18.

The C-groove engagement tool 1B of this modification has a flat locking portion 10A in the C-groove engagement tool 1A, and extends upward at an angle of approximately 30 degrees with respect to the locking portion 10A. Instead of the arm portion 11A, a locking portion 10B is formed with a curved portion 105b that curves upward, and a substantially opposite locking portion 10B that extends upward at an angle of approximately 5 to 15 degrees with respect to the locking portion 10B. By forming the L-shaped arm portion 11B, when the locking portion 10B is inserted into the C groove 2, the arm portion 11B
protrudes from the opening 20 of the C groove 2.

That is, the locking portion 10B of the C-groove engaging tool 1B
The width L3 in the x direction is smaller than the internal width L2 of the C groove 2, and the width L4 in the y direction, which is substantially perpendicular to the x direction, is larger than the internal width L2 of the C groove 2. Furthermore, the locking portion 10B has both ends 103b and 104b in the y direction.
Among the sides, one end 104b side near the arm portion 11B extends upward at an inclination angle of about 5 to 45 degrees, and as shown in FIG.
A curved portion 105b is formed which curves leftward at an angle of about 15 degrees. The length of the curved portion 105b is approximately 7 mm. Further, the locking portion 10B has an R (arc) between the width L3 and the width L4.
1) portions 10a and 10b are formed. Arm part 11
B is integrally formed with the locking part 10B,
A position extending upward at the angle from the flat part on the opposite side to the one end 103b where the curved part 105b is not formed, and extending in a right angle direction from the tip thereof (at a predetermined interval in the y direction from the center of the locking part 10B) A fixing portion 110 consisting of a long hole-shaped attachment hole to which the string 4 is fixed is formed at the position shown in FIG.

The C-groove engaging tool 1B of this modified example configured as described above has both ends 103b and 10 of the locking portion 10B in the y direction.
4b to both ends 22a and 23a in the C groove 2, the other end 10 in the y direction becomes the tip of the curved part 105b.
4b is engaged with the other end 23a in the C groove 2, the other end 104b acts to spread the other end 23a in the depth direction of the C groove 2 due to the curved portion 105b, and the engagement is increased accordingly. The effect of the C-groove engaging tool 1A of the second embodiment is that the reaction force of the other end 23a of the C-groove 2 acting on the stop portion 10B increases and pinches the curved portion 105b, thereby more securely fixing and holding it. The effect is similar. That is, the C-groove engagement tool 1B of this modification
According to the above, in addition to the effects of the C-groove engaging tool 1A of the second embodiment, when the C-groove 2 is locked, the curved portion 105b is forced into the narrow space on the other end 23a side of the C-groove 2. Since it is press-fitted and sandwiched between the other side ends 23a, the C-groove engagement tool 1B can be fixed and held even more reliably. Therefore, for each of the two C-groove engagement tools 1B, it is necessary to hold the sheet 33 covering the arcuate frame 30 (see FIG. 8 above) onto the fixing portion 110 of the arm portion 11B. Tie one end 40 and the other end 41 of string 4 of a length suitable for
After the work of locking the C-groove engaging tool 1B at one end (40 side) to one C-groove 2, engage the C-groove engaging tool 1B at the other end (the other end 41 side of the string 4) to the other C-groove 2. When moving to the stopping work, the one C-groove engaging tool 1B will not be accidentally removed from the one C-groove 2.

Therefore, the other C groove engaging tool 1B, which is performed subsequent to the locking operation of the one C groove engaging tool 1B, is connected to the other C groove engaging tool 1B.
The work of locking into the groove 2 can be performed by one worker. Note that the inclination angle and the curvature angle of the curved portion 105b that extends upward and curves from the flat portion of the locking portion 10B are determined by the thickness of the material forming the C groove 2 and the C groove 2.
Various values can be set in advance depending on the internal depth, etc., so that the value is the easiest to lock or pinch.

[Brief explanation of the drawing]

[Fig. 1] A plan view showing a C-groove engagement tool of Example 1.

[Figure 2] Side view in Figure 1

FIG. 3 is a perspective view showing a state in which the engaging portion of the C-groove engaging tool in FIG. 1 is inserted into the C-groove.

FIG. 4 is a perspective view showing the locked state of the C-groove engagement tool in FIG. 3 after applying a rotational moment to the arm portion and rotating the locking portion within the C-groove;

[Fig. 5] Side view showing the initial stage of inserting the locking part into the C groove

[Fig. 6] A side view showing a state in which the engaging portion in Fig. 5 is inserted into the C groove.

[Fig. 7] A side view showing a state in which the locking part is locked in the C groove after rotation is applied and rotated.

[Fig. 8] A perspective view showing a vinyl house for using a C-groove engagement tool.

FIG. 9 is a perspective view showing a state in which the locking part of the C-groove engagement tool of Example 2 is inserted into the C-groove.

[Fig. 10] The C-groove engagement tool in Fig. 11 is attached to the arm with a rotation motor.
A perspective view showing the locked state after the locking part is rotated within the C groove by applying the

[Fig. 11] Side view showing the initial stage of inserting the locking part into the C groove

[Fig. 12] Side view showing a state in which the locking part shown in the figure is inserted into the C groove

[Fig. 13] Side view showing a state in which the locking part is locked in the C groove after rotation is applied and rotated.

[Fig. 14] A perspective view showing a vinyl house for using a C-groove engagement tool.

[Fig. 15] Using the installation auxiliary operating tool, attach the C groove engagement tool to the C groove.
Perspective view showing how it is installed in the groove

FIG. 16 is a perspective view of a C-groove engagement tool according to a modification of the second embodiment, seen from the plane side;

[Figure 17] Bottom view in Figure 16

[Figure 18] Side view in Figure 16

[Fig. 19] A perspective view showing a conventional linear engagement tool.

[Fig. 20] A perspective view showing a state in which the linear engagement tool in Fig. 19 is attached to the C groove and used.

[Figure 21] Side view in Figure 20

[Explanation of symbols]

1, 1A, 1B...C groove engagement tool
10, 10A, 10B...Locking portions 101, 102...Both ends 11, 11A, 11
B...Arm

Claims (2)

[Claims] 1. An engagement tool that is locked to a C-groove whose cross-sectional shape is a constant C-shape, and whose interior expands on both sides as it goes inward from the opening and whose internal width is wider than the opening width,
Insert into the C groove whose width in the x direction is narrower than the internal width of the C groove and whose width in the y direction in a direction forming a predetermined angle with the x direction is narrower than the internal width of the C groove and wider than the opening width of the C groove. a locking part that is integral with the locking part, projects from the opening when the locking part is inserted into the C groove, and is spaced at a predetermined interval from the center of the locking part in at least the y direction; An arm having a fixed part in which a wire such as a string is fixed in a fixed position, and a rotational moment from the x direction to the y direction acts on the locking part by the tensile force of the wire with the longitudinal direction of the C groove as the rotation axis. After inserting the locking portion into the C groove, the rotation moment is applied to the arm portion to rotate the locking portion within the C groove, and the y of the locking portion is rotated within the C groove. A C-groove engagement tool characterized in that both ends of the direction are engaged with both sides of the internal width of the C-groove. 2. An engagement tool that is engaged with a C-groove in which the cross-sectional shape of the groove is a constant C-shape, and the interior expands on both sides as it goes inward from the opening and has an internal width wider than the opening width,
a locking part inserted into the C groove, the width of which is narrower in the x direction than the internal width of the C groove, and the width of the y direction in a direction forming a predetermined angle with the x direction is wider than the internal width of the C groove; A wire rod such as a string is fixed to a position that is integral with the locking part, projects from the opening when the locking part is inserted into the C groove, and is spaced at least a predetermined distance from the center of the locking part in the y direction. and an arm portion having a fixed portion on which a rotational moment from the x direction to the y direction in a plane including the x direction and the y direction acts on the locking portion due to the tensile force of the wire, and the locking portion is inserted into the C groove, the rotation moment is applied to the arm part to rotate the locking part within the C groove, and both ends of the locking part in the y direction are inserted into the C groove. A C-groove engagement tool characterized by being engaged with both ends of the width.