JP5863104B2 - Two-member connecting device - Google Patents

Description

  The present invention, for example, allows an optional member such as an article placement tray or display to be pivoted in the vertical direction at a tip end of an arm mounted on an article placement fixture or a wall surface, and has a predetermined rotation angle. It is related with the connection apparatus of 2 members used when attaching so that fixation is possible.

  As a conventional general connecting device of this type, for example, as disclosed in Patent Document 1, a downwardly U-shaped top plate support frame is rotated up and down at the front ends of a pair of lifting frames. The folding part of the top plate support frame is pressed against the outer surface of the lift frame by tightening a fixing handle that is pivotally attached and is screwed to one end of a bolt inserted into the lift frame and the top plate support frame. The top plate support frame is fixed at a predetermined rotation angle, or as disclosed in Patent Document 2, the U-shaped mounting bracket attached to the tip of the arm is attached to the office The connecting piece part of the U-shaped cross section with the equipment mounting plate attached is externally fitted, and these are connected with a bolt and a nut so as to be relatively rotatable up and down, and the bolts are tightened to attach both side pieces of the connecting piece to the mounting bracket. On the outer surface of the Ri, there are those to be fixed to connecting piece at a predetermined rotation angle.

JP-A-6-253930 JP-A-11-63382

  In the connecting device described in Patent Document 1, when the fixing handle is rotated and brought into pressure contact with the outer surface of the lifting frame, the entire bent portion of the U-shaped top plate support frame is elastically inward. Also, in the connecting device described in Patent Document 2, both the side pieces of the connecting piece portion of the U-shaped cross-section externally fitted to the mounting bracket are elastically deformed inward by bolts. In order to firmly fix the top plate support frame and the connecting piece part, it is necessary to fasten the fixing handle and the bolt with a strong force. There is a problem that it is not easy to use.

  In order to solve this problem, the bent portions of the top plate support frame and both side pieces of the connecting piece are made long, and the vicinity of the tip portion that is largely separated from the connecting shaft of both members is tightened with a fixing handle and a bolt. Although it is conceivable to do so, this is not preferable because the top support frame and the connecting piece are enlarged and heavy.

  The present invention has been made paying attention to such a problem, and the second member fitted on the first member can be easily fitted with a light force without enlarging the second member. In addition, an object of the present invention is to provide a two-member connecting device that can be firmly fixed and that can reduce the size of the first and second members.

In order to solve the above problems, the two-member connecting device of the present invention is:
A two-member connecting device for connecting two members so as to be relatively rotatable in the vertical direction and fixed at a predetermined rotation angle,
A first member having a U-shaped cross section having a pair of connecting pieces facing each other;
A U-shaped cross section having a pair of connected pieces that are fitted on both connecting pieces of the first member, and a predetermined region of both connected pieces is elastic in a thickness direction surrounded by a cut groove. A second member that is a deformable elastic piece;
A first connecting shaft for connecting the vicinity of the base end portions of the elastic pieces in the two connecting pieces of the first member and the two connected pieces of the second member in a relatively rotatable manner;
A second connecting shaft for connecting both connecting pieces of the first member and both elastic pieces of the second member so as to adjust a rotation angle about the first connecting shaft;
The first member and the second member are provided on the second connecting shaft, and are elastically deformed inward and pressed against the outer surfaces of the two connecting pieces of the first member, thereby bringing the first member and the second member into contact with each other. A fastening means for fixing at a rotation angle;
It is characterized by having.
According to this feature, a part of the connected piece of the second member that is externally fitted to the connecting piece of the first member is formed as an elastic piece surrounded by the notch groove on the outer surface of the connecting piece of the first member. Since the press contact is made, it is not necessary to elastically deform the entire connected piece of the second member inward. Therefore, the first member can be firmly fixed to the second member only by tightening the tightening means with a light force.

The two-member connecting device of the present invention is
The cut groove has a U shape or a U shape in a side view formed in a region from the vicinity of the first connection shaft to the vicinity of the second connection shaft, and the region surrounded by the cut groove is the It is characterized by being an elastic piece.
According to this feature, both elastic pieces are easily elastically deformed inward, so that the first connecting shaft and the second connecting shaft can be brought close to each other. As a result, the length of the connecting piece of the first member and the connected piece of the second member can be reduced, and the first member and the second member can be downsized.

The two-member connecting device of the present invention is
The second connecting shaft is a connecting bolt inserted through both connecting pieces of the first member and both elastic pieces of the second member, and is screwed into the connecting screw and the male threaded portion of one protruding end thereof. The fastening means is constituted by a fastening handle.
According to this feature, since the second connecting shaft also serves as a part of the tightening means, the structure of the tightening means is simplified, and the first member and the second member can be simply operated by rotating the tightening handle. The member can be easily adjusted to a predetermined rotation angle.

The two-member connecting device of the present invention is
The first connecting shaft is fitted with a first spacer having a constant distance between opposing surfaces of both connected pieces of the second member.
According to this feature, since the distance between the opposing surfaces of the two connected pieces of the second member is held constant by the first spacer, even if the two connected pieces of the second member are strongly tightened by the connecting bolt, Both the connected pieces are not pressed against the outer surface of the connecting piece of the first member, and therefore the relative rotation between the first member and the second member becomes smooth.

The two-member connecting device of the present invention is
The second connecting shaft is fitted with a second spacer having a constant interval between the opposing surfaces of the connecting pieces of the first member.
According to this feature, since the distance between the connecting pieces of the first member is held constant by the second spacer, only the elastic pieces are effectively elastically inward when the fastening means is tightened. The elastic pieces can be deformed, and both elastic pieces come into strong pressure contact with the outer surface of the first member.

It is a perspective view of the article mounting fixture to which the connecting device of the present invention is applied. It is the perspective view which looked at the connecting device and its mounting member from the lower part. Similarly, it is the perspective view which looked at the connecting device and its mounting member from the left side. Similarly, it is an exploded perspective view of a connecting device. It is a perspective view of the 2nd member. It is a side view of a connecting device and its mounting member. FIG. 7 is an enlarged transverse plan view taken along line VII-VII in FIG. 6.

  EMBODIMENT OF THE INVENTION The form for implementing the connection apparatus of 2 members which concerns on this invention is demonstrated below based on an Example.

  FIG. 1 is a perspective view of an article mounting fixture 1 to which the connecting device of the present invention is applied. The connecting device is a tray 3 on which a lower surface of an optional member, for example, a keyboard 2 (see FIG. 3) of a personal computer is mounted. It is provided on the lower surface of.

  A mounting bracket 7 for an arm 6 that supports the tray 3 is attached to the left end portion of the beam member 5 in the left-right direction that connects the opposing surfaces of the intermediate portions of the pair of left and right support columns 4, 4 in the article mounting fixture 1. And a pair of upper and lower forward pieces 8 and 8 of the mounting bracket 7, the base end portion of the support arm 6 is screwed into the connecting bolt 9 facing the up and down direction and the lower end portion thereof and can be turned by hand. It is supported by the attached handle 10 so that it can be horizontally rotated and fixed at an arbitrary rotation angle.

  As shown in FIGS. 2 to 7, the two-member connecting device 11 of the present invention is attached to the tip of the support arm 6. The coupling device 11 includes a first member 12 having a U-shape that is upward when viewed from the front, and a second member 13 that is externally fitted to the first member 12.

  The first member 12 includes a base piece 14 facing diagonally forward and upward, a pair of left and right connecting pieces 15 and 15 rising from both side edges, and an outward flange piece 16 connected to the upper ends of both connecting pieces 15. 16, and the lower surface of the central portion of the tray 3 is fixed to the upper surfaces of both flange pieces 16 by a plurality of bolts 17.

  Further, the two connecting pieces 15 are formed with circular shaft holes 18, 18, and arc-shaped long holes 19, 19 centered on the shaft hole 18 at the rear thereof.

  As shown in FIG. 5, the second member 13 includes a vertical base piece 20, a pair of left and right connected pieces 21 and 21 extending forward from both side edges, and an upper edge and a lower edge of the base piece 20. A pair of upper and lower mounting pieces 22 and 22 extending further rearward are provided.

  The connecting bolt is inserted between the upper and lower mounting pieces 22 by inserting the distal ends of the supporting arms 6 into the rectangular shaft holes 23 of the mounting pieces 22 and the shaft holes (not shown) of the supporting arms 6. The second member 13 can be pivoted horizontally at the tip of the support arm 6 and connected to the distal end of the support arm 6 by being connected by the screw 24 and the tightening handle 10 that can be turned by hand. Are connected so as to be fixed at an arbitrary angle (see FIG. 2).

  The left and right connected pieces 21, 21 of the second member 13 are formed with slit-shaped notch grooves 25 that are U-shaped backward in a side view having a starting point and an ending point that are vertically separated toward the front end. Elastic pieces 26, 26 that are long in the front-rear direction are integrally formed at the center of both connected pieces 21 surrounded by the notch groove 25. A circular shaft hole 27 and a square shaft are respectively formed in the vertical center portion of the front end portion close to the base end portion of the elastic piece 26 in both the connected pieces 21 and the central portion near the rear of the elastic piece 26. The hole 28 is formed so as to face the front and rear. In addition, the notch groove 25 is good also as what makes a U-shape by side view.

  The first member 12 and the second member 13 are connected as follows. As shown in FIGS. 4 and 7, first, cylindrical flanged bushes 29, 30 made of synthetic resin are provided in the shaft holes 18, 18 and the long holes 19, 19 of the left and right connecting pieces 15 in the first member 12. Fits slidable from the outside.

  Next, after both the connected pieces 21 of the second member 13 are externally fitted to both the connected pieces 15 of the first member 12, the shaft holes 27, 27 at the front portions of the two connected pieces 21 of the second member 13, The front hooked bushes 29 and 29 fitted to both the connecting pieces 15 of the one member 12 are connected to the connecting bolt 31 and the shaft-like cap nut 32 which are the first connecting shaft, and the left and right ends are the second member 13. Are inserted into and fitted into cylindrical spacers 33 having left and right dimensions that are in contact with the opposing surfaces of the two connected pieces 21, and the internal thread 32 a on the inner surface of the shaft-shaped cap nut 32 is fitted into the external thread 31 a at the tip of the connection bolt 31. Screw together.

  Thereby, the front-end parts of the 1st member 12 and the 2nd member 13 are connected so that relative rotation is possible in the up-down direction. At this time, both ends of the spacer 33 abut against the opposing surfaces of the two connected pieces 21 of the second member 13, and the interval between the opposing surfaces of the two connected pieces 21 is kept constant. Even if it is strongly tightened, the connected piece 21 of the second member 13 is prevented from being pressed against the outer surface of the connecting piece 15 of the first member 12, and the first member 12 and the second member 13 can smoothly rotate relative to each other. To move.

  Next, a second shaft 13 has a rectangular shaft hole 28 formed in the left and right elastic pieces 26, 26, and a hooked bush 29 fitted in the long holes 19 of both connecting pieces 15 of the first member 12. A long connecting bolt 34, which is a connecting shaft of the second member 13, is connected to one side through a flat washer 35 and a cylindrical spacer 36 having left and right dimensions abutting the opposing surfaces of both connected pieces 21 of the second member 13. By inserting the rectangular shaft portion 34 a formed at the base end portion of the connecting bolt 34 into the shaft hole 28, the rotation is prevented.

  Next, a nut 38 that is integrally molded and fixed inside the hand-tightening handle 37 is screwed onto the male thread 34 b formed at the protruding end of the connecting bolt 34 via a flat washer 39. To do. As a result, when the first member 12 and the second member 13 are connected and the tightening handle 37 is loosened, the first member 12 and the tray 3 attached to the second member 13 are connected to the long holes 19. Only the length range can be rotated in the vertical direction around the front connecting bolt 31 and the shaft-like cap nut 32.

  When the tightening handle 37 is tightened, the left and right elastic pieces 26, 26 are elastically deformed inward about the front base end portion by the inner side surface and the head of the connecting bolt 34, whereby both elastic pieces The inner surface of 26 is pressed against the outer surface of the bush 29 with the hooks fitted to the left and right connecting pieces 15 of the first member 12, and the bush 29 with both hooks is clamped more strongly than the left and right sides. Accordingly, the first member 12 and the tray 3 attached thereto can be fixed to the second member 13 at a predetermined rotation angle. At this time, since the distance between the connecting pieces 15 of the first member 12 is held constant by the spacer 36, only the elastic pieces 26 are effectively elastically deformed inward when the tightening handle 37 is tightened. Then, it comes into strong pressure contact with the outer surfaces of the left and right flanged bushes 29 of the first member 12.

  As described above, in the coupling device 11 of the above-described embodiment, the rear U-shaped notch groove 25 is provided in the second member to be coupled 21 that is externally fitted to the coupling piece 15 of the first member 12. The portion surrounded by the notch groove 25 is used as an elastic piece 26 so as to be brought into pressure contact with the outer surface of the connecting piece 15 of the first member 12, so that the entire connected piece 21 of the second member faces inward. It is not necessary to be elastically deformed. Therefore, the first member 12 can be firmly fixed to the second member 13 only by tightening the tightening handle 37 with a light force.

  Further, in the vicinity of the base end portion of the elastic piece 26, the connecting piece 15 of the first member 12 and the connected piece 21 of the second member 13 are connected by a connecting bolt 31 and a shaft-shaped cap nut 32 which are the first connecting shafts. Since they are connected, it becomes easy to elastically deform both elastic pieces 26 inward, and therefore, the front connection bolt 31 and the rear connection bolt 34 as the second connection shaft can be brought close to each other. As a result, the front and rear dimensions of the connecting piece 15 of the first member 12 and the connected piece 21 of the second member 13 can be reduced, and the first member 12 and the second member 13 can be reduced in size.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

  For example, in the above-described embodiment, the left and right elastic pieces 26 of the second member 13 are pressed against the outer surface of the flanged bush 30 fitted in the long hole 19 of the connecting piece 15 of the first member 12. Such a flanged bush 30 may be omitted, and the left and right elastic pieces 26 may be directly pressed against the outer surface of the connecting piece 15 of the first member 12.

  Moreover, in the said Example, the to-be-connected piece 21 of the 2nd member 13 is provided with the notch groove 25 of the back-facing U-shape in side view, and the elastic piece 26 enclosed by it is elastically deformed centering | focusing on a front-end part. However, the notch groove 25 may be opposite in the front-rear direction, and the elastic piece 26 surrounded thereby may be elastically deformed around the rear end. In this case, the shaft holes 18 and the long holes 19 of the first member 12 and the shaft holes 27 and 28 of the second member 13 may be provided in the opposite directions.

  Furthermore, in the said Example, although the connection bolt 31 and the axial cap nut 32 are used as a 1st connection shaft which connects the front-end parts of the 1st member 12 and the 2nd member 13, the axial cap nut 32 is used. The connecting bolt 31 may be made long, and a nut may be simply screwed onto the protruding end portion of the second member 13 from the connected piece 21. Alternatively, the nut may be omitted and the connecting bolt 31 may be omitted. It may be possible to prevent the projecting end from being squeezed or by using a snap ring or the like.

DESCRIPTION OF SYMBOLS 1 Article mounting fixture 11 Connection apparatus 12 1st member 13 2nd member 15 Connection piece 21 Connected piece 22 Attachment piece 24 Connection bolt 25 Notch groove 26 Elastic piece 31 Connection bolt (1st connection shaft)
31a Male thread portion 32 Shaft-shaped cap nut (first connecting shaft)
32a Female thread portion 33 Spacer 34 Connection bolt (second connection shaft)
36 Spacer 37 Tightening handle

Claims (5)

A two-member connecting device for connecting two members so as to be relatively rotatable in the vertical direction and fixed at a predetermined rotation angle,
A first member having a U-shaped cross section having a pair of connecting pieces facing each other;
A U-shaped cross section having a pair of connected pieces that are fitted on both connecting pieces of the first member, and a predetermined region of both connected pieces is elastic in a thickness direction surrounded by a cut groove. A second member that is a deformable elastic piece;
A first connecting shaft for connecting the vicinity of the base end portions of the elastic pieces in the two connecting pieces of the first member and the two connected pieces of the second member in a relatively rotatable manner;
A second connecting shaft for connecting both connecting pieces of the first member and both elastic pieces of the second member so as to adjust a rotation angle about the first connecting shaft;
The first member and the second member are provided on the second connecting shaft, and are elastically deformed inward and pressed against the outer surfaces of the two connecting pieces of the first member, thereby bringing the first member and the second member into contact with each other. A fastening means for fixing at a rotation angle;
A two-member connecting device comprising:   The cut groove has a U shape or a U shape in a side view formed in a region from the vicinity of the first connection shaft to the vicinity of the second connection shaft, and the region surrounded by the cut groove is the The two-member coupling device according to claim 1, wherein the two-member coupling device is an elastic piece.   The second connecting shaft is a connecting bolt inserted through both connecting pieces of the first member and both elastic pieces of the second member, and is screwed into the connecting screw and the male threaded portion of one protruding end thereof. The two-member connecting device according to claim 1 or 2, wherein the tightening means is constituted by a tightening handle.   4. The first spacer according to claim 1, wherein a first spacer having a constant distance between opposing surfaces of both connected pieces of the second member is fitted to the first connecting shaft. Two-member connecting device.   5. The two-member according to claim 1, wherein a second spacer that fixes a distance between opposing surfaces of the coupling pieces of the first member is fitted to the second coupling shaft. Coupling device.

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