JP4295606B2 - Mounting structure of spring on opening / closing body - Google Patents

Description

  The present invention relates to a spring mounting structure for an opening / closing body such as a panel shutter, which can be balanced with the weight of the opening / closing body by a spring so as to perform a smooth opening / closing operation.

The following patent documents are listed as conventional techniques that form the basis of the present invention. In this technique, as shown in FIG. 1, a pair of winding pulleys 2 provided on both sides of a winding shaft 1 are connected so that the upper ends of connecting members 3 chained in a chain shape can be wound and unwound. An opening / closing body 4 is formed by arranging a partition piece such as a slat panel (not shown) between the connecting members 3.
A winding drum 5 is coaxially arranged on the winding shaft 1, and the other end side of a connecting long body 6 such as a belt having one end connected to the drum 5 is connected to the floor side via a plurality of guide pulleys 7. It is connected to the upper end of the tension spring 8.

In this structure, when the opening / closing body 4 is wound up, the belt 6 is set so as to be unwound from the drum 5, and when the opening / closing body 4 is released, the tension of the spring 8 decreases and the opening / closing body 4 is wound. When unfolded, that is, in a state in which the opening / closing body 4 is closed, the spring 8 extends to the maximum and the tension becomes maximum, and the weight load when the opening / closing body 4 is released from this state is reduced. Thus, the gravity change based on the raising / lowering of the opening / closing body 4 and the tension change by the spring 8 are balanced.
JP-T-2003-527513

In the above configuration, the fixing structure of the end portion of the tension spring 8 to the floor surface is anchored to the floor slab.
However, such a fixing structure requires a predetermined curing period after the spring 8 is fixed, and cannot be operated quickly after installation. Moreover, once fixed, length adjustment and attachment position adjustment cannot be performed. In addition, this type of spring may break due to fatigue load due to repeated loading, but the replacement work is also troublesome.

  The object of the present invention is to solve the above-mentioned problems. The purpose of the present invention is to allow the opening / closing body to be operated immediately after the tension spring is fixed, to easily adjust the length and position at the time of installation, and to facilitate replacement. Provided is a spring mounting structure in an openable / closable body.

  In order to achieve the above object, the present invention, as shown in the embodiment of the figure, is a tension spring for reducing the weight load of the opening / closing body 4 by generating tension by expanding and contracting the opening / closing body 4. 28, the lip groove-shaped receiving member 16 fixed to the floor surface side, and the top 34 connected directly and indirectly to the floor side end portion of the tension spring 28. And the top 34 is slidably inserted into the support 16 and locked. The opening / closing body 4 may be, for example, a relatively wide panel type or a slat type, and may be a winding type or a feeding type similar to the above-described conventional technology.

  The receiver 16 is preferably fixed in advance on the base plate 12 fixed to the floor surface by welding, welding, adhesion, or the like.

  With the above configuration, the relatively wide receiving member 16 or the base plate 12 is fixed in advance on the concrete floor side, and the top 34 is inserted into the groove of the receiving member 16 from the side, whereby the lower end of the tension spring 28 is obtained. Is fixed to the floor side. Therefore, it is easy to attach the lower end of the tension spring 28 to the floor surface side, and if necessary, the lower end of the tension spring 28 can be easily removed from the floor surface side by removing the top 34 from the receiving tool 16. Can be removed and replaced or adjusted.

  In the present invention, a bolt portion 36 having the top 34 fixed to the lower end is projected from the end portion of the tension spring 28, and the bolt portion 36 is inserted above the support 16. The perforated washer 38 is provided with a connecting nut 40 that is screwed into the bolt portion 36 at the top of the washer 38.

  In such a configuration, by screwing the connecting nut 32, the upper piece of the receiving member 16 can be clamped by the washer 38 and the piece 34 and can be fixed to the receiving piece 16.

  In the above configuration, when the tension spring 28 is broken, for example, the washer 38 bites into the groove of the support 16 due to the impact, and the tension spring 28 may be difficult to remove or replace. is there.

  However, if the spacer 35 is inserted and disposed between the top 34 and the inner bottom surface of the receiver 16, the above-mentioned fear is eliminated.

  Further, as a washer, a washer 50 as shown in FIGS. 4 and 5 is used, and a pair of side walls 50a, 50a that engage with both sides of the support 16 are formed in a lowered state on both sides of the washer 50. Can be made. Thereby, the above-mentioned fear is eliminated.

  Further, a washer 60 as shown in FIGS. 6 and 7 is used as a washer, and a pair of side walls 60a and 60a that engage with both sides of the receiving member 16 are formed in a lowered state on both sides of the washer 60. At the same time, the auxiliary side walls 60b and 60b that are slidably fitted in the groove 16a of the receiving member 16 can be formed in a lowered state at the front and rear portions of the washer 60. As a result, the above problem is solved.

  Therefore, according to the present invention, it is easy and efficient to attach and fix the tension spring to the floor surface side.

  In addition, the tension spring can be easily replaced, adjusted in length and position. Furthermore, the replacement work of the spring becomes easy.

(First embodiment)
2 and 3 show a first embodiment of the present invention. In addition, since the schematic structure of the whole opening / closing body is the same as that of FIG. 1 already demonstrated or a similar structure, the description is abbreviate | omitted and only a principal part is demonstrated.
2A and 2B are a perspective view of a spring mounting bracket and an exploded perspective view showing a mounting relationship between the spring mounting bracket and the spring, and FIG. 3 is an enlarged front view showing the mounting state.

  First, in FIGS. 2A and 2B, the mounting bracket 10 is made of a metal plate having a predetermined thickness, and a base plate 12 having a pair of mounting side frames 14 raised and formed on two intersecting sides around the base plate 12, and a base plate. 12 on the board surface of the base plate 12 and the base plate 12 at an appropriate position on the board surface of the spring plate 16 formed of a lip groove-shaped metal extrusion molded body fixed by rivets, welding, or the like. Similarly, an auxiliary tool 18 made of an angle member for attaching other members fixed by rivets, welding or the like is provided. The receiving member 16 has an open edge of the U-shaped main body with the open portion facing upward, bent in an opposing direction to form an upper piece, and a slit-like groove 16a is formed between the upper pieces.

A mounting hole 12a and a long hole 12b for mounting the anchor bolt 20 projecting to the floor surface are opened on the surface of the base plate 12, and a nut 22 is screwed to the projecting end of the bolt 20 as shown in FIG. By anchoring, the anchor is firmly fixed on the floor. A plurality of rivet holes 14 a are opened in the side frame 14, and are connected to a mating member 24 such as a vertical guide frame disposed at each position via a rivet 26.
The mounting bracket 10 described above is prepared symmetrically depending on the arrangement of the tension spring 28.

  As described above, the tension spring 28 extends and contracts in conjunction with the rotation operation of the winding pulley of the opening / closing body, and the attachment end on the side of the attachment fitting 10 is screwed into the inner periphery of the attachment spring 10 to be firmly connected. A screw block-shaped end fitting 30 is provided. The end fitting 30 is formed with an insertion hole penetrating in the axial direction thereof, and adjustment nuts 32, 32 are disposed on both end faces thereof.

On the other hand, on the spring receiving member 16 side, a top 34 serving as an anchor body slidably inserted in the groove 16a is disposed, and a bolt portion 36 protruding from the upper center of the top 34 is perforated. By screwing the adjusting nut 32 through the washer 38 and the connecting nut 40, the end of the spring 28 can be firmly fixed as shown in FIG.
Fine adjustment of the spring pressure of the spring 28 can be performed by inserting and removing the bolt portion 36 by adjusting the rotation of the adjusting nut 32.
The horizontal position of the spring 28 may be adjusted by moving the top 34 along the groove 16a of the spring support 16.
Thereafter, by tightening the connecting nut 40, the washer 38 and the top 34 fix the upper piece of the spring receiving member 16 in a sandwiched state.

  In this fixed state, as shown in FIG. 3, a metal spacer 35 is inserted between the inner bottom surface of the receiver 16 and the top 34. The spacer 35 preferably has a thickness substantially equal to the separation distance between the inner bottom surface of the receiver 16 and the lower surface (bottom surface) of the top 34.

  In addition, although the figure showed the case where one axial center of the end fitting 30 was connected by the bolt part 32 and the pair of adjusting nuts 32, it can be connected by the same structure at two axial directions. Further, when the spring 28 is broken in the extended state, an impact load is directly applied to the washer 38 and there is a risk of deformation. Therefore, the spacer 35 is inserted as much as possible for impact resistance. It is desirable to make the washer 38 thick.

(Second Embodiment)
Next, FIGS. 4 and 5 show a second embodiment of the present invention. Instead of the dish washer 38 in the first embodiment, a rectangular flat plate having a pair of side walls 50a falling on both sides. A washer 50 having both side walls 50a engaged with the outside of the spring support 16 is used. The both side walls 50a of the washer 50 and the both sides of the receiving member 16 may be engaged with each other with a certain degree of clearance. Moreover, it is preferable that the both side walls 50a of the washer 50 have a length that reaches the upper surface of the base plate 12, and are formed in a lowered state. Other configurations are the same as those in the first embodiment.
In the present embodiment, there is no accompanying rotation when the connecting nut 40 is tightened, and the impact at the time of spring breakage is received by the both side walls 50a, so that deformation due to impact load can also be prevented.

(Third embodiment)
6 and 7 show a third embodiment of the present invention. Instead of the dish washer 38 in the first embodiment, it falls on both sides and engages the outside of the spring support 16. A pair of side washers 60 is formed, and a flat washer 60 provided with a pair of auxiliary side walls 60b slidably inserted in the groove 16a of the spring support 16 at the front and rear is used, as in the second embodiment. It is. In the third embodiment, when the auxiliary side walls 60b at the front and rear portions of the washer 60 have a length substantially reaching the inner bottom surface of the receiving member 16 and are formed in a lowered state, the side walls on both sides of the washer 60 are provided. 60 a may be formed so as not to have a length reaching the upper surface of the base plate 12.
In the present embodiment, in addition to the same effects as those of the second embodiment, when an impact load is applied, the auxiliary side wall receives the impact load, so that the impact resistance is further increased.

It is side explanatory drawing which shows the outline of the opening-closing body structure to which this invention is applied. (A) is a perspective view which shows a mounting bracket single-piece | unit, (b) is an exploded perspective view which shows the attachment structure of the mounting bracket and a spring. It is a partial enlarged front view which shows the same attachment state. It is a disassembled perspective view which shows 2nd Embodiment of this invention. It is a partial enlarged front view which shows the same attachment state. It is a disassembled perspective view which shows 3rd Embodiment of this invention. It is a partial enlarged front view which shows the same attachment state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Mounting bracket 12 Base plate 16 Holder 20 Anchor bolt, 22 Nut 8, 28 Tension spring 30 End fitting 32 Adjustment nut 34 Top 35 Spacer 36 Bolt part 38, 50, 60 Washer 40 Connecting nut 50a, 60a Side wall 60b Auxiliary Side wall

Claims (5)

In the floor side end mounting structure of the tension spring to reduce the weight load of the opening and closing body by expanding and contracting by the lifting and lowering operation of the opening and closing body,
It is a receiver fixed on the floor side, and the open edge of the U-shaped main body with the open portion facing upward is bent in the opposite direction to form an upper piece, and a longitudinal groove with a slit-like groove formed between the left and right upper pieces A receiving piece, a piece having a bolt portion protruding upward connected to the floor side end of the tension spring, and a connecting nut screwed into the bolt portion above the groove of the receiving piece. Is slidably inserted into the receiver and locked, and is fixed to the upper piece of the receiver by screwing the connecting nut .
An opening / closing body characterized in that a spacer having a thickness substantially equal to the distance between the lower surface of the frame and the inner bottom surface of the receiver is disposed between the frame and the inner bottom surface of the receiver. Mounting structure of the spring. In the floor side end mounting structure of the tension spring to reduce the weight load of the opening and closing body by expanding and contracting by the lifting and lowering operation of the opening and closing body,
It is a receiver fixed to the floor surface, and the open edge of the U-shaped main body with the open portion facing upward is bent in the opposite direction to form an upper piece, and a slit-like groove is formed between the left and right upper pieces. A receiving piece, a piece having a bolt portion protruding upward connected to the floor side end of the tension spring, and a connecting nut screwed into the bolt portion above the groove of the receiving piece. Is slidably inserted into the receiver and locked, and is fixed to the upper piece of the receiver by screwing the connecting nut.
A washer is provided between the connecting nut and the receiving member, and a pair of side walls that engage with both outer sides of the receiving member are formed in a lowered state on both sides of the washer. A spring mounting structure for the opening / closing body. 3. The pair of side walls formed in a lowered state on both sides of the washer have a length that substantially reaches the upper surface of the base plate on the floor surface side to which the support is fixed. Mounting structure of the spring in the described opening / closing body. In the floor side end mounting structure of the tension spring to reduce the weight load of the opening and closing body by expanding and contracting by the lifting and lowering operation of the opening and closing body,
It is a receiver fixed on the floor side, and the open edge of the U-shaped main body with the open portion facing upward is bent in the opposite direction to form an upper piece, and a longitudinal groove with a slit-like groove formed between the left and right upper pieces A receiving piece, a piece having a bolt portion protruding upward connected to the floor side end of the tension spring, and a connecting nut screwed into the bolt portion above the groove of the receiving piece. Is slidably inserted into the receiver and locked, and is fixed to the upper piece of the receiver by screwing the connecting nut.
A washer is provided between the coupling nut and the receiver, and a pair of side walls that engage with both outer sides of the receiver are formed in a lowered state on both sides of the washer. A mounting structure for a spring in an opening / closing body , wherein an auxiliary side wall fitted into the groove of the receiving member is formed in a lowered state at the front and rear portions of the opening / closing member. A pair of side walls formed in a lowered state on both sides of the washer has a length that substantially reaches the upper surface of the base plate on the floor surface side to which the support is fixed, and is in a lowered state at the front and rear portions of the washer. The attachment structure of the spring in the opening / closing body according to claim 4 , wherein the formed auxiliary wall portion has a length that substantially reaches the inner bottom surface of the receiving member.

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