JP3725067B2 - Spring force pressing type friction fixing device for tubular member - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a spring force pressing type friction fixing device for a tubular member.
This tubular member is stretched between the left and right side walls of the building or between the floor and ceiling walls to be fixed by friction, and is used as a suspension rod or column that can be easily attached and detached.
[0002]
[Prerequisite configuration]
As shown in FIG. 1B (present invention) or FIG. 3 (prior art), for example, the spring force pressing friction fixing device for a tubular member of the present invention is intended for a device having the following premise configuration.
FIG. 1 (B) is a longitudinal front view of the main part showing Embodiment 1 of the spring force pressing friction fixing device for a tubular member of the present invention. FIG. 3 is a longitudinal front view of a main part showing a conventional spring force pressing and fixing type suspension rod.
[0003]
The friction contact tube (3) is supported so as to be movable forward and backward along the tube axis direction with respect to the tube end side portion (2) of the tubular member (1). A compression coil spring (4) is interposed between the pipe end side part (2) and the friction welding cylinder (3).
The friction contact tube (3) is configured to be elastically pressed against the tube end side portion (2) by the tension of the compression coil spring (4). This compression coil spring (4) is configured to be accommodated in the internal space of the friction contact cylinder (3).
[0004]
[Prior art]
In the above premise configuration, as a specific configuration for connecting the friction contact cylinder (3) to the pipe end side portion (2), there is the following in the prior art.
○ Conventional technology. See FIG. (Utility model registration No. 3028704 gazette)
FIG. 3 is a longitudinal front view of a main part showing a conventional spring force pressing and fixing type suspension rod.
[0005]
The friction contact tube (3) is slidably fitted on the intermediate tube (51). The intermediate pipe (51) is slidably fitted on the pipe end side part (2). A spring tension adjusting bolt (53) is fixed to the partition wall (52) of the intermediate tube (51) and protrudes toward the pipe end portion (2). A nut (54) is fixed to the tube end portion of the tube end side portion (3) via a tube end fixing tube (55). A spring tension adjusting bolt (53) is screwed into the nut (54).
[0006]
The compression coil spring (4) is inserted between the partition wall (52) of the intermediate tube (51) and the friction contact tube (3). The bolt (56) for preventing the frictional connection tube (3) from falling off is fixed to the partition wall (52) of the intermediate connection tube (51), and is configured to receive the frictional connection tube (3) at the bolt head. Yes.
[0007]
[Problems to be solved by the invention]
The above prior art has the following problems.
[I. As a structure to increase or decrease the tension of the compression coil spring (4), the required number of parts is as much as three parts of the intermediate pipe (51), spring tension adjustment bolt (53), and nut (54) are interposed. Increasing its complexity. ]
[0008]
The tubular member (1) has a compression coil spring (4) in a compressed state, and is stretched between the left and right side walls of the building or between the floor and ceiling walls to be fixed by friction, so that it can be easily attached and detached. Used as.
[0009]
In this state of use, the contact surface pressure and the frictional fixing force of the friction contact cylinder (3) against the wall of the building are determined by the tension of the compression coil spring (4). The operation of adjusting the contact surface pressure and the frictional fixing force within the appropriate range is performed by rotating the tubular member (1) forward / reversely so that the spring tension adjusting bolt (53) is advanced relative to the nut (54). Let's retreat. At this time, with respect to the pipe end side portion (2), a friction welding cylinder is passed through a nut (54), a spring tension adjusting bolt (53), a relay cylinder (51), and a compression coil spring (4) in this order. The position of (3) is adjusted to advance or retract, and the tension of the compression coil spring (4) is adjusted to increase or decrease.
[0010]
As a structure for increasing or decreasing the tension of the compression coil spring (4), the required number of parts is equivalent to the three parts of the intermediate pipe (51), spring tension adjusting bolt (53), and nut (54). Increases the complexity of the structure.
[0011]
[B. The structure to prevent the friction welding cylinder (3) from falling off from the pipe end side part (2) increases the number of necessary parts by the amount of the bolts (56) for preventing the dropout. It becomes complicated. ]
[0012]
As a structure for preventing the frictional connection tube (3) from falling off the tube end side portion (2) of the tubular member (1) when the tubular member (1) is not used, the intermediate connection tube (51) is used. The friction contact tube (3) is locked by the head of the fixed drop-off prevention bolt (56), and the required number of parts increases by the amount of the drop-off prevention bolt (56). Its structure becomes complicated.
[0013]
[C. The assembly work of the spring force pressing type friction fixing device for the tubular member includes the insertion operation of the compression coil spring (4), the external fitting operation of the friction contact tube (3), the insertion / screw fixing operation of the drop-off prevention bolt (56). Further, since the four steps of the screw fitting operation of the spring tension adjusting bolt (53) while fitting the intermediate tube (51) to the outside are necessary, the assembling work takes time and the work efficiency is not good. ]
[0014]
The spring force pressing friction fixing device for the tubular member is assembled in the following procedure.
[1] Insert the compression coil spring (4) into the intermediate tube (51).
[2] While compressing the compression coil spring (4), the friction contact tube (3) is fitted onto the intermediate tube (51).
[3] While holding the compression coil spring (4) in a compressed state, the drop-off prevention bolt (56) is inserted into the friction contact tube (3) and then fixed to the intermediate tube (51) with screws.
[4] While the intermediate tube (51) is externally fitted to the pipe end portion (2), the spring tension adjusting bolt (53) is screwed to the nut (54).
[0015]
As described above, the assembling work of the spring force pressing type friction fixing device for the tubular member includes the operation of inserting the compression coil spring (4), the operation of fitting the friction contact cylinder (3), and the bolt for preventing the drop (56). The four steps of insertion / screw fixing operation and screw fitting operation of the spring tension adjusting bolt (53) while externally fitting the intermediate tube (51) are also required. The efficiency is not good.
[0016]
An object of the present invention is to do as follows.
(I). As a structure to increase or decrease the tension of the compression coil spring, the number of necessary parts can be reduced by directly screwing the fixed spring screwed part and the coil middle part of the compression coil spring to the pipe end side part. Simplify the structure.
(B). As a structure for preventing the frictional connection cylinder from falling off from the pipe end side portion, the structure is simplified by reducing the number of necessary parts by using a compression coil spring.
[0017]
(C). The assembly work of the spring force pressing type friction fixing device for the tubular member can be performed quickly and efficiently by performing only two steps of the operation of inserting the compression coil spring and the screwing operation of the friction contact cylinder. .
(D). The pair of spring check engagement pawls can be elastically opened and closed flexibly so that the rotational force of the spring detent spring line portion does not need to act. Can be easily and efficiently performed with a light force.
(E). The spring threaded part is composed of a tube wall bulging strip that bulges the tube wall on the tube end side, eliminating the need to manufacture and assemble it as an independent part, making it simple and efficient. Can be manufactured.
[0018]
[Means for Solving the Problems]
In order to solve the above problems, the spring force pressing type friction fixing device for a tubular member according to the present invention is a specific example for connecting the friction contact cylinder (3) to the pipe end side portion (2). For example, as shown in FIGS. 1 and 2, for example, the following characteristic configuration is added.
[0019]
1 and 2 show Embodiment 1 of a spring force pressing type friction fixing device for a tubular member of the present invention. FIG. 1 (A) is a partially cut front view showing a use state of a spring force pressing and fixing type suspension rod, and FIG. 1 (B) is a longitudinal front view of section B in FIG. 1 (A). 1C is a cross-sectional view taken along the line CC of FIG. 1B, FIG. 1D is a cross-sectional view taken along the line DD of FIG. 1B, and FIG. 1E is the cross-sectional view of FIG. It is a top view of a pipe end side part.
2A is an enlarged view of a portion A in FIG. 1B, and FIG. 2B is a right side view of FIG.
[0020]
○ Invention 1. Claim 1. See FIG. 1 and FIG.
The friction contact tube (3) is slidably fitted to the tube end side portion (2). A spring screwing part (5) is fixed to the pipe end side part (2). The coil middle portion (6) of the compression coil spring (4) is screwed into the spring screw portion (5).
[0021]
A pair of spring check engagement claws (9) project from the central wall portion of the spring seat (8) on the inner surface of the cylinder end wall (7) of the friction connection cylinder (3). The spring wire portion (11) for preventing rotation of the spring is bent transversely from the coil tip (10) on the side of the compression coil spring (4) that is received by the spring seat (8) . This spring detent spring wire portion (11) is inserted between the spring check engagement claws (9) and (9) to be prevented from being removed.
[0022]
A pair of detent projections (12) project from the wall portion between the spring seat (8) and the spring check engagement claw (9) on the inner surface of the cylinder end wall (7) of the friction connection cylinder (3). Set up. The pair of anti-rotation protrusions (12) is configured to receive and stop both ends of the spring wire portion (11) for anti-rotation of the compression coil spring (4).
[0023]
○ Invention 2. Claim 2. See FIG.
The invention 2 is characterized in that the following feature configuration is added to the invention 1 described above.
The tubular wall bulge strip (13) is formed by bulging the tubular wall of the tubular end portion (2) of the tubular member (1) toward the inside of the tube. The tubular wall wall bulging strip (13) constitutes the spring screwing portion (5).
[0024]
【The invention's effect】
The tubular member spring force pressing friction fixing device of the present invention has the following effects.
○ Invention 1. Claim 1. See FIG. 1 and FIG.
[0025]
[I. As a structure for increasing or decreasing the tension of the compression coil spring (4), a spring screwing portion (5) fixed to the pipe end portion (2) and a coil intermediate portion (6) of the compression coil spring (4) Since it is only necessary to directly screw together, the number of necessary parts is reduced and the structure is simplified. ]
[0026]
The tubular member (1) has a compression coil spring (4) in a compressed state, and is stretched between the left and right side walls of the building or between the floor and ceiling walls to be fixed by friction, so that it can be easily attached and detached. Used as.
In this state of use, the contact surface pressure and the frictional fixing force of the friction contact cylinder (3) against the wall of the building are determined by the tension of the compression coil spring (4).
[0027]
The operation of adjusting the contact surface pressure and the frictional fixing force within the appropriate range is performed by rotating the tubular member (1) forward / reversely to move the coil middle part (6) from the spring threaded part (5). And adjust the tension of the compression coil spring (4) to increase or decrease.
[0028]
As a structure for increasing or decreasing the tension of the compression coil spring (4), a spring screwing portion (5) fixed to the tube end side portion (2) and a coil intermediate portion (6) of the compression coil spring (4) are provided. It is only necessary to screw them directly.
For this reason, the necessary number of parts is reduced to the extent that the three parts of the intermediate tube (51), spring tension adjusting bolt (53), and nut (54), which are necessary in the case of the prior art shown in FIG. It was possible to reduce the manufacturing cost by simplifying the structure.
[0029]
[B. Since the compression coil spring (4) is also used as a structure for preventing the friction welding cylinder (3) from dropping off from the pipe end side part (2), the structure is simplified by reducing the number of necessary parts. . ]
[0030]
As a structure for preventing the friction welding tube (3) from falling off the tube end side portion (2) of the tubular member (1) when the tubular member (1) is not used, the tube end side portion (2 ) And a coil spring portion (6) of the compression coil spring (4) screwed into the middle portion (6) of the compression coil spring (4), and the coil tip portion (10) around the spring of the compression coil spring (4). It is only necessary to insert the retaining spring wire portion (11) into the protruding spring check engagement claw (9) from the tube end wall (7) of the friction contact tube (3) to prevent it from being removed.
[0031]
In other words, since the compression coil spring (4) is also used as a structure for preventing the friction connection cylinder (3) from falling off, the bolt (56) for preventing falling off required in the prior art shown in FIG. 3 can be omitted. The number of necessary parts can be reduced, the structure can be simplified, and the manufacturing cost can be reduced.
[0032]
[C. The assembly work of the spring force pressing type frictional fixing device for the tubular member is simple because it requires only two steps of the insertion operation of the compression coil spring (4) and the screwing operation of the friction contact cylinder (3). It can be done quickly and efficiently. ]
[0033]
The spring force pressing friction fixing device for the tubular member is assembled in the following procedure.
[1] Inserting the compression coil spring (4) into the friction contact cylinder (3), and the spring wire portion (11) for preventing the rotation of the compression coil spring (4) is connected to a pair of spring check engagement claws. (9) Engage between (9) to reverse.
[2] Hold the friction connecting cylinder (3) in hand and rotate the compression coil spring (4) while inserting it into the tube end side part (2) of the tubular member (1). The coil middle part (6) of the coil spring (4) is screwed into the spring screwing part (5), and the friction contact cylinder (3) is externally fitted to the pipe end side part (2).
[0034]
As described above, the assembly work of the spring force pressing type friction fixing device for the tubular member can be performed only in two steps, that is, the insertion operation of the compression coil spring (4) and the screwing operation of the friction contact cylinder (3). It can be done easily, quickly and efficiently.
[0035]
[D. The pair of spring check engagement claws (9) and (9) can be elastically opened and closed as much as the rotational force of the spring detent spring wire portion (11) does not need to act. The work of fitting the spring wire portion (11) between the spring check engagement claws (9) and (9) can be easily and efficiently performed with a light force. ]
[0036]
The tubular member (1) is stretched between the left and right side walls of the building or between the floor and ceiling walls and fixed in friction. (6) slides on the spring threaded portion (5), rotates and is screwed in, the effective length of the compression coil spring (4) is shortened, and the frictional fixing force of the friction connecting tube (3) Decreases.
[0037]
As a structure to prevent this decrease in the frictional fixing force, the anti-rotation protrusion (12) receives both ends of the spring detent spring wire portion (11) to strengthen the spring detent spring wire portion (11). To prevent rotation.
As a result, the pair of spring check engagement claws (9) and (9) can be elastically opened and closed as much as the rotational force of the spring wire portion (11) for preventing rotation of the spring does not need to be applied. The work of fitting the spring wire portion (11) for preventing rotation of the spring between the spring check engagement claws (9) and (9) can be easily and efficiently performed with a light force.
[0038]
○ Invention 2. Claim 2. See FIG.
This invention 2 has the following effects in addition to the effects [A], [B], [C] and [D] of the above invention 1.
[E. Since the spring threaded portion (5) is composed of the tube wall wall ridge (13) in which the tube wall of the tube end side portion (2) is expanded, there is no need to manufacture and assemble it as an independent part. Therefore, it can be easily and efficiently manufactured at low cost. ]
[0039]
Since the spring threaded portion (5) is composed of the tube wall wall ridge (13) obtained by expanding the tube wall of the tube end side portion (2), it can be easily and efficiently manufactured at low cost. .
That is, as compared with the case where the spring screwing part (5) is manufactured as an independent part and fitted and fixed to the pipe end side part (2), the number of parts can be reduced and the number of assembling steps can be reduced. is there.
[0040]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a spring force pressing type friction fixing device for a tubular member according to the present invention will be described below with reference to the drawings.
Embodiment 1 Claims 1 and 2. See FIG. 1 and FIG.
1 and 2 show Embodiment 1 of a spring force pressing type friction fixing device for a tubular member of the present invention. FIG. 1 (A) is a partially cut front view showing a use state of a spring force pressing and fixing type suspension rod, and FIG. 1 (B) is a longitudinal front view of section B in FIG. 1 (A). 1C is a cross-sectional view taken along the line CC of FIG. 1B, FIG. 1D is a cross-sectional view taken along the line DD of FIG. 1B, and FIG. 1E is the cross-sectional view of FIG. It is a top view of a pipe end side part.
2A is an enlarged view of a portion A in FIG. 1B, and FIG. 2B is a right side view of FIG.
[0041]
In FIG. 1, reference numeral (1) is a tubular member made of stainless steel pipe. This tubular member (1) is a main component of a spring force press-fixing type suspension rod, and the inner tube (23) is inserted into the outer tube (24) so that it can be expanded and contracted. It is configured to be fixed by a one-touch type fixing means (25) by operation.
[0042]
Reference numerals (3) and (26) are friction-welding tubes made of hard synthetic resin, and (27) and (27) are friction-welding plates made of rubber or soft synthetic resin. Friction-welding tubes (3) and (26) It is adhered to the outer end surface of the. (21) and (22) are left and right side walls of a building such as a house.
[0043]
The friction contact tube (3) is supported so as to be movable forward and backward along the axial direction of the tube with respect to the tube end side portion (2) of the inner tube (23) of the tubular member (1). A compression coil spring (4) is interposed between the pipe end side part (2) and the friction welding cylinder (3).
The friction contact tube (3) is configured to be elastically pressed against the tube end side portion (2) by the tension of the compression coil spring (4). This compression coil spring (4) is accommodated in the cylinder internal space of the friction contact cylinder (3).
[0044]
The friction contact tube (3) is slidably fitted to the tube end side portion (2). A spring screwing part (5) is fixed to the pipe end side part (2). The coil middle portion (6) of the compression coil spring (4) is screwed into the spring screw portion (5).
A pair of spring check engagement claws (9) project from the central wall portion of the spring seat (8) on the inner surface of the cylinder end wall (7) of the friction connection cylinder (3). A spring wire portion (11) for preventing spring rotation is bent in a transverse manner from the coil tip (10) of the compression coil spring (4). The spring wire portion (11) for preventing the rotation of the spring is inserted into the spring check engagement claw (9) to prevent it from being removed.
[0045]
A pair of detent projections (12) project from the wall portion between the spring seat (8) and the spring check engagement claw (9) on the inner surface of the cylinder end wall (7) of the friction connection cylinder (3). Set up. The pair of anti-rotation projections (12) are configured to receive and stop both ends of the spring wire portion (11) for preventing the rotation of the compression coil spring (4).
[0046]
The tube wall of the tube end side portion (2) of the tubular member (1) is bulged to the inside of the tube to form a pair of upper and lower tube wall bulges (13). The tubular wall bulging strip (13) constitutes the spring threaded portion (5).
[Brief description of the drawings]
FIG. 1 and FIG. 2 show Embodiment 1 of a spring force pressing type frictional fixing device for a tubular member of the present invention. FIG. 1 (A) is a partially cut front view showing a use state of a spring force pressing and fixing type suspension rod, and FIG. 1 (B) is a longitudinal front view of section B in FIG. 1 (A). 1C is a cross-sectional view taken along the line CC of FIG. 1B, FIG. 1D is a cross-sectional view taken along the line DD of FIG. 1B, and FIG. 1E is the cross-sectional view of FIG. It is a top view of a pipe end side part.
FIG. 2A is an enlarged view of a portion A in FIG. 1B. FIG. 2B is a right side view of FIG.
FIG. 3 is a longitudinal front view of a main part showing a conventional spring force pressing and fixing type suspension rod;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Tubular member, 2 ... Pipe end side part, 3 ... Friction contact cylinder, 4 ... Compression coil spring, 5 ... Spring screwing part, 6 ... Coil middle part, 7 ... Tube end wall, 8 ... Spring seat, DESCRIPTION OF SYMBOLS 9 ... Spring check engagement claw, 10 ... Coil front-end | tip part, 11 ... Spring wire part for spring rotation prevention, 12 ... Non-rotation protrusion, 13 ... Pipe wall bulging strip.

Claims (2)

A friction contact tube (3) is supported so as to be movable back and forth along the tube axis direction with respect to the tube end side portion (2) of the tubular member (1), and the tube end side portion (2) and the friction contact tube are supported. (3) A compression coil spring (4) is interposed between
The compression coil spring (4) is configured so that the friction contact tube (3) is elastically pressed against the tube end side portion (2) by the tension, and the compression coil spring (4) is a friction contact tube. (3) configured to be accommodated in the cylinder internal space,
In the spring force pressing type friction fixing device of the tubular member,
The friction welding cylinder (3) is slidably fitted to the pipe end side part (2), and a spring screwing part (5) is fixed to the pipe end side part (2). (5) is screwed into the coil middle part (6) of the compression coil spring (4),
A pair of spring check engagement claws (9) project from the center wall portion of the spring seat (8) on the inner surface of the cylinder end wall (7) of the friction connection cylinder (3), and the compression coil spring (4 ), The spring wire portion (11) for preventing rotation of the spring is transversely bent out from the coil tip portion (10) on the side received by the spring seat (8), and this spring wire portion for preventing spring rotation ( 11) is inserted between the spring check engagement claws (9) and (9) to prevent removal.
A pair of detent projections (12) project from the wall portion between the spring seat (8) and the spring check engagement claw (9) on the inner surface of the cylinder end wall (7) of the friction connection cylinder (3). The pair of anti-rotation protrusions (12) are configured to receive and stop both ends of the spring wire portion (11) for preventing the rotation of the compression coil spring (4).
A spring force pressing type frictional fixing device for a tubular member. The spring force pressing type frictional fixing device for a tubular member according to claim 1,
A tubular wall bulging strip (13) is formed by bulging the tubular wall of the tube end side portion (2) of the tubular member (1) to the inside of the tube, and this tubular wall bulging strip (13) The spring screwing portion (5) is configured.

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