JPH1019017A - Connecting method for joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform confirmation of the engaged or disengaged state of a male-female engaging part in a joint part, and confirmation of a position at which a male-female engagement is possible by extension and contraction, and turning operation in the joint part, by a reactive response and sound. SOLUTION: A joint part 1 is constructed so that the rear part 2a of a turning body 2 is loosely fitted into an opened recessed part 3a obtained by opening the front face of a joint base part 3, the center part of the turning body is turnably pivoted on the joint base part 3 by a shaft 4, and the alteration of angle and fixing the turning body are performed by mutual turning motion caused by the engagement or disengagement of the male-female engaging part. In this case, in order to provide the male-female engaging part which is engaged or disengaged by pulling and pushing the turning body back and forth, a part of the peripheral edge is formed into an elstic projected piece 2c, a longitudinally extended long hole 2b is provided at the center part of the rear part of the turning body, and a tip part A of the elastic projected piece is projected into the long hole. Then, for the male-female engaging part, an engaging projected part 2d is formed in the rear part of the turning body, and on the joint base part side, a sliding groove 3c in which the engaging projected part slides, is provided and an engagingly locking groves 3b to which the engaging projected part is fitted to be locked, are provided on both sides of the sliding groove 3c. The width of the sliding groove is formed to be slightly smaller than the thickness of the engaging projected part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint in which a male / female engaging portion is disengaged and disengaged so as to be vertically rotatable or can be fixed at a set position and which can be easily checked for disengagement. Related to the connection method of the unit.

[0002]

2. Description of the Related Art Conventionally used joints of this kind are:
The rotating part is loosely fitted and pivoted in the opening concave part of the joint base, and the bending position is fixed by tightening it using bolts and nuts as its axis. Recognition of the state in fixing, releasing or bending operation is uncertain. there were.

[0003]

SUMMARY OF THE INVENTION In the present invention, the male / female engagement state is prevented from being inadvertently disengaged from the male / female engagement portion, and the feeling and sound transmitted to the hands for manipulating the joint portion. It is an object of the present invention to provide a method capable of easily confirming a bending and stretching state.

[0004]

As a means for solving the above problem, the rear part of the rotating body is loosely fitted into an opening recessed in the front surface of the joint base, and the center of the rotating body is pivotally mounted on the joint base. In order to provide a male / female engagement portion that is attached and detached by pushing and pulling the rotating body back and forth in a joint portion configured to rotate and reciprocate by engaging and disengaging the male and female engagement portion to perform angle change and fixing. A part of the periphery is formed in an elastic protruding piece, and a long hole extending in the front-rear direction is provided at the center of the rear part of the rotating body, and the end of the elastic protruding piece protrudes into the long hole, and the shaft moves back and forth in the long hole. When the shaft passes, it is configured to return by elastic force, so that a click feeling is transmitted to the operating hand, and the engagement and disengagement of the male and female engaging portions can be easily confirmed. At the mutual sliding contact surface between the rear part of the rotating body and the joint base,
An engaging convex portion is formed at the rear portion of the rotating body, an arc-shaped sliding groove on which the engaging convex portion slides on the joint base side, and a locking groove into which the engaging convex portion is fitted and locked at both ends thereof. Since the width of the sliding groove is slightly smaller than the thickness of the engaging protrusion, when the engaging protrusion slides in the sliding groove, the tips of the left and right walls of the opening recess are pushed outward. It is in an open state, and is configured to return with elastic force when fitted into the locking groove. Therefore, when the rotating body is turned up and down, there is a click feeling, and it can be easily confirmed that the turning body is in the bent state or the straightened state.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of the present invention, and is an overall perspective view of a fitting for attaching a cloth using a method of connecting joints. The joint base 3 is pivotally mounted on a shaft 4. The joint base 3 is provided with a mounting plate 5 for wall mounting. The rotating body 2 is provided with three hanging rods 6 for wiping and turning with a set screw 7. It is movably mounted on the shaft. The towel can be attached to either the bottom wall or the vertical wall by bending and extending the joint 1 for use.

FIG. 2 is an enlarged perspective view of the joint portion shown in FIG. 1. The rotating body 2 has a long hole 2b at the center of a rear portion 2a, and a front upper portion of the inner peripheral surface of the long hole 2b. Is provided with an elastic protruding piece 2c, the tip of which protrudes slightly into the elongated hole. Engagement projections 2d are provided on the left and right edges of the rear portion 2a. An upper tongue piece 2e and a lower tongue piece 2f protrude forward of the rotating body 2, and the end of the hanging rod 6 is held between both tongue pieces by a set screw 7. It is rotatably fixed to the shaft. The joint base 3 has 9 locking grooves 3b in which the engaging projections 2d are loosely fitted on the left and right inner wall edges of the opening recess 3a.
The sliding grooves 3 are formed opposite to each other with an opening angle of 0 degrees, and the gap between the locking grooves 3b, 3b is shallower and slightly narrower than the locking grooves.
c, a shaft insertion hole 3d corresponding to the long hole 2b of the rotating body 2 is provided at the center of both left and right walls of the opening concave portion.
A mounting plate 5 for mounting the wall surface is integrally connected to the upper part of the upper part.

FIGS. 3 to 5 are enlarged views of the main part of FIG. 1 and sequentially show the operation states of bending and extension.
The rotating body 2 forward from the normal position (left side in the drawing)
It is a central longitudinal sectional view showing a change in a state of sliding to,
FIG. 3 shows a normal state, in which a long hole 2b provided at the center of the rear part of the rotating body is formed with an elastic protruding piece 2c extending over about one-fourth of the periphery of the hole. A protrudes into the long hole. The shaft 4 has a size whose diameter is the short diameter of the long hole, is located at the forefront of the long hole, and is sandwiched between the elastic protruding piece 2c and the inner wall of the long hole, so that it does not move carelessly. In addition, since the shaft 4 does not abut on the distal end a of the elastic protruding piece, the elastic protruding piece 2c is not distorted. At this time, the male and female engaging portions are in an engaged state in which the engaging convex portions 2d are fitted into the locking grooves 3b.

Next, FIG. 4 shows a state in which the rotating body 2 has been pulled out slightly forward from the state shown in FIG. 3, and the shaft 4 in the elongated hole 2b is located below the distal end a of the elastic projection 2c. Since the distal end a is in contact with the shaft 4, the elastic protruding piece 2c is pressed upward and is distorted. At this time, the male and female engaging portions are in a state in which the engaging convex portion 2d has come out of the locking groove 3b by about half.

FIG. 5 shows a state in which the rotating body 2 is completely pulled out forward. The shaft 4 is located at the rearmost position in the elongated hole 2b, and the distal end a is separated from the shaft, so that the elastic projection piece is used. 2c
Has returned to its original state due to elastic force. At this time, the male and female engaging portions are in a state in which most of the engaging projections 2d have slipped out of the locking grooves 3b and can move into the sliding grooves 3c, that is, in a detached state. When the operation of pulling the rotating body 2 forward is performed as shown in FIGS. 3 to 5, the elastic protrusion 2c is distorted and returns to the original state by the movement of the shaft 4 in the long hole. The sound is generated at the same time as the clicking feeling is transmitted to the hands performing the operation, and it can be confirmed that the male and female engaging portions are disengaged.

FIG. 6 is a sectional view showing a state in which the rotating body 2 is rotated counterclockwise after the male and female engaging portions are disengaged as shown in FIG. It has moved from the stop groove 3b to the slide groove 3c.

FIG. 7 is a cross-sectional view showing a state where the rotating body 2 is further rotated to be in series with the joint base 3 and pushed backward (to the right in the drawing). From 9
Since the female and male engaging portions are in the engaged state in which the engaging convex portions 2d are fitted in the locking grooves 3b, and the shaft 4 is located at the forefront of the long hole 2b. When the rotating body 2 is inadvertently pulled forward in the state of being sandwiched between the elastic protruding piece 2c and the peripheral wall, the male and female engaging portions do not come off.

FIG. 8 is a front view showing the state of FIG. 6 in a partial cross section, and shows the engagement projection 2 located in the middle of the sliding groove 3c.
d is slightly larger than the width of the sliding groove 3c, the joint base 3
The left and right side wall end portions of the opening concave portion 3a are spread outward.

FIG. 9 is a front view showing the state of FIG. 5 in a partial cross section. The engaging projection 2d is located in the locking groove 3b.
Since the width of the locking groove 3b is a width in which the engaging projection 2d is loosely fitted, the left and right side wall ends of the opening concave portion 3a opened outward as shown in the previous figure are caused by the original elastic force. You're back in state. When the rotating body 2 is rotated as shown in FIG. 8 to FIG. 9, the left and right side wall ends of the opening concave portion 3 a that has been opened by the engagement convex portion 2 d being fitted into the locking groove 3 b are restored. Therefore, a click is transmitted to the hand operating the rotating body 2, and at the same time, a sound is generated, and it can be confirmed that the male and female engaging portion has reached a position where it can be engaged.

FIG. 10 is a sectional view showing another embodiment of the joint base, in which the locking grooves 3'b provided in the sliding contact portion with the rotating body of the joint base 3 'are each shifted at an angle of 45 degrees. And the rotating body can be fixed at an arbitrary angle by forming the position of the locking groove at an arbitrary position as described above. The rotating body can be turned by 180 degrees relative to the joint base.

[0015]

11 and 12 show an embodiment in which the present invention is applied to other articles. A leg B having a joint leg 1 'using the present invention is provided on folding legs at four corners on the lower surface of a table A. A leg folding table which can be folded and fixed as shown in FIG. 12 by pulling each leg B to release and rotate a male and female engaging portion (not shown) built in the joint portion 1 '. It is.

Next, FIGS. 13 and 14 show still another embodiment, which is a foldable knife provided with a joint 1 "utilizing the present invention. Protrusions 2 "b are provided. Correspondingly, locking grooves 3" b and 3 "b are provided by opening 180 degrees in the inner surface of the distal end portion of the sheath D, and the locking grooves are connected by sliding grooves 3" c. Then, a shaft 4 "is inserted into the slot 2" b.
When the blade C is pulled to disengage the male and female engaging portion including the engaging convex portion and the locking groove, the blade C is rotated by 180 degrees as shown in FIG. Can be accommodated. Further, when the knob E is pulled to engage the male and female engaging portions, the blade C is not opened carelessly, which is safe.

[0017]

When the rotating body is pushed against the joint base to disengage the male and female engaging portions, the shaft moves in the elongated hole provided in the rotating body. Formed on the protruding piece and its tip protrudes into the long hole, the elastic protruding piece is distorted by applying a certain force or more and the shaft can move, and it can be used for the hand operated for its operation. A click is transmitted and a sound is generated at the same time, so that the male and female engaging portions can be clearly confirmed to be disengaged.

Further, when the engaging projection is located in the sliding groove, the distal ends of the left and right side walls of the opening concave portion of the joint base expand outward, and when the engaging projection is located in the locking groove, the normal state is restored. Later, when the engaging projection moves from the locking groove to the sliding groove or from the sliding groove to the locking groove, the hand performing the turning operation has a click and a sound is generated at the same time. Therefore, it is possible to clearly confirm that the angle between the rotating body and the joint base has reached an angle at which the male and female can be engaged, so that the rotating operation of the joint can be performed reliably and safely.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an entire embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a main part in FIG.

FIG. 3 is a sectional view showing a state in which the male and female engaging portions are engaged.

FIG. 4 is a cross-sectional view showing a state immediately before the male and female engaging portions are released.

FIG. 5 is a sectional view showing a state in which the male and female engaging portions are disengaged.

FIG. 6 is a sectional view showing a state in which the rotating body is being rotated.

FIG. 7 is a sectional view showing a state in which the rotating body and the joint base are connected in series and the male and female engaging portions are engaged.

8 is a front view showing a state in FIG. 6 in a partial cross section.

9 is a front view showing the state in FIG. 5 in a partial cross section.

FIG. 10 is a cross-sectional view showing a joint base according to another embodiment.

FIG. 11 is a perspective view showing another embodiment using the present invention.

FIG. 12 is a perspective view showing a state in which the legs of the embodiment in FIG. 11 are folded.

FIG. 13 is a side view showing still another embodiment using the present invention.

FIG. 14 is a side view showing a state in which the blade of the embodiment in FIG. 13 is folded.

[Explanation of symbols]

 1, 1 ', 1 "... joint part 2 ... rotating body 2a ... rear part 2b, 2" b ... elongated hole 2c ... elastic projection piece 2d, 2 "d ... engagement projection part 2e ... upper tongue piece 2f ... lower tongue piece 3, 3 '... joint base 3a ... opening concave portion 3b, 3'b, 3 "b ... locking groove 3c, 3'c, 3" c ... sliding groove 3d ... shaft insertion hole 4, 4 "... shaft 5 ... Mounting plate 6 ... Hanging rod 7 ... Set screw A ... Tip A ... Tabletop B ... Leg C ... Blade D ... Sheath E ... Knob

Claims (2)

[Claims] 1. A rear part of a rotating body is loosely fitted and pivotally fitted into an opening recessed opening of a front surface of a joint base, and a male and female engagement part is provided at a rotating sliding contact part between the rotating body and both walls of the recessed part. The following methods are combined in a bendable / extendable joint configured to fix the rotation of the rotating body by engagement of the male and female engaging portions, disengage the engagement, and vertically rotate the rotating body. How to join the joints. (a) An elongated hole extending in the front-rear direction is provided at the center of the rear part of the rotating body, and (b) the male and female engaging portions are disengaged by pulling the rotating body forward. (c) Part of the periphery of the long hole is formed as an elastic projection. (d) The tip of the elastic projection piece is projected into the elongated hole. (e) When the shaft slides in the elongated hole due to the back and forth movement of the rotating body, the tip of the elastic protrusion comes into contact with the shaft and is pressed in the outer peripheral direction to be distorted, and returns when the shaft passes. (f) It can be confirmed that the male and female engaging portions are disengaged by feeling and sound due to the change in the elastic strain. A rear portion of the rotating body is loosely fitted and pivotally fitted into an opening recessed in a front surface of the joint base, and a male and female engaging portion is provided at a rotating sliding contact portion between the rotating body and both walls of the recess; A mutual rotating sliding contact portion between the rotating body of the joint and the joint base configured to fix the rotation of the rotating body by engagement of the male and female engaging portions, disengage the engagement, and vertically rotate the rotating body. A method of connecting joints by combining the following methods. (a) An engagement projection is provided on the rear side of the rotating body. (b) On the joint base side, a sliding groove in which the engaging projection slides is formed to have a width slightly smaller than the width of the engaging projection. (c) At both ends of the sliding groove, locking grooves into which the engaging projections are fitted and locked are provided. (d) The rotating body is slid forward to disengage the male and female engaging portions. (e) When the joint portion is bent and the engaging convex portion is located in the sliding groove, the ends of the left and right walls of the opening concave portion expand outward, and when the engaging convex portion is fitted into the locking groove, the elasticity is increased. To return. (f) The bending position can be confirmed by the feel and sound at that time.