JP2005140317A - Sliding body structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sliding body structure particularly suitable for a sliding body of a double hung window mounted to a house or the like, among general sliding body structures. <P>SOLUTION: A lower sash 20 that can be lifted/lowered and tilted to the indoor side or outdoor side to open a window is fitted into a part of the sash window 1. A movable block 6 which is a moving body guided by a guide shaft 3 on either side of a sash window body frame 2 vertically slides to support the vertical sliding and tilting operation of the lower sash 20 by connection to a supporting arm 24. The movable block 6 moves onto a guide shaft 3 through a sliding bush 7. The sliding bush 7 obtained by injection-molding a mixture of 65-75 wt% of poly(ε-caprolactam), 20-25 wt% of high density polyethylene with which general-purpose injection molding is possible, and 5-10 wt% of glass fiber, is low in molding cost, having excellent wear resistance, and effective in suppressing sliding sound and noise at the stop of movement. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a sliding body structure that guides the traveling of a sliding moving body, and more particularly to a sliding body structure that is suitable as a sliding portion of a raising / lowering window attached to a house such as a house.

  In general, a rubber material is used in a sliding structure of a moving body in consideration of sliding resistance, and as these materials, for example, those made of polyurethane rubber are well known. In this case, if left unused for a long time, the rubber material will stick between the guiding shaft member and the guide groove, and if it is moved for a while after being left, the resistance will increase and move. It becomes difficult, and there is a problem of causing damage if forced.

  In order to eliminate such problems, a 6-nylon sliding bush containing glass fiber is interposed between the polyurethane rubber sliding bush and the shaft member, or an ultra-high molecular weight polyethylene made of A structure in which a sliding bush is interposed is also well known. However, the former 6-nylon sliding bush with glass fiber has a high sliding noise, and an abnormal noise tends to occur when the sliding stops. In addition, in the case of the latter ultra high molecular weight polyethylene sliding bush, there is a problem that when foreign matters such as sand are caught in the sliding surface and mixed, it is vulnerable to wear and the molding cost increases.

  By the way, recently, many sash windows have been used in ordinary houses. In particular, the demand for raising and lowering windows considering the opening and closing functionality during ventilation is increasing rapidly. For example, a glass window is divided into two upper and lower shojis and upper and lower shojis. When ventilating, only the lower shojis are tilted inside or outside the room so that they can be opened and closed. It has been. In this case, the lower shoji is opened and closed by being tilted so as to raise and lower the lower shoji and pull it back inward. At that time, the lower shoji is moved up and down by being guided by the body frame of the sash window via a moving body (hereinafter referred to as a movable block) on both sides by the raising and lowering operation.

For example, guide shafts extending vertically are fixedly provided on both sides of the body frame of the sash window, and the movable block slides up and down on the guide shafts. In this case, the movable block does not slide directly on the outer peripheral surface of the guide shaft, but the above-described polyurethane rubber sliding bush is generally press-fitted in a pre-compressed state between the two members. Yes. The sliding bush made of polyurethane rubber can be moved in sliding contact with the guide shaft surface, and at the same time, the rubber pressure gives the sliding contact resistance to the guide shaft surface, and the lower and lower operated shoji can be moved to any position on the sash window. Can be positioned. By pulling and opening the lower shoji at that position, it is possible to easily ventilate the room without opening the sash window.
JP-A-9-144427

  However, in such conventional polyurethane rubber sliding bushes, there is a difficulty in fixing after standing for a long time peculiar to the material, so there is a sliding bush made of 6-nylon with glass fiber or ultra high molecular weight polyethylene. If it interposes, the member cost will rise so much. In addition, when the sliding bushes of these separate members are interposed, new problems such as generation of high sliding noise and abnormal noise, and in particular, biting of foreign matters such as sand from the outdoors occur.

  An object of the present invention is to provide a sliding body structure suitable as a sliding portion of a raising / lowering window attached to a house such as a house among general sliding body structures.

  An object of the present invention is a structure in which a moving body slides on a guide shaft via a sliding bush, and the sliding bush is 65 to 75% by weight of poly (ε-caprolactam) and molded by a general-purpose injection molding machine. This is achieved by a sliding structure which is a molded article obtained by injection molding a possible mixture of 20-25% by weight high density polyethylene and 5-10% by weight glass fiber. As a high-density polyethylene that can be molded by a general-purpose injection molding machine, Lübmer (registered trademark; Mitsui Chemicals) is preferably used.

  The sliding bush used in the sliding structure according to the present invention is mainly composed of poly (ε-caprolactam) generally called 6-nylon, and high density polyethylene and glass fiber that can be molded by a general-purpose injection molding machine. Is a molded product obtained by injection-molding a mixture to which is added, not only has excellent wear resistance, but also can effectively suppress sliding noise and abnormal noise at start / stop, as well as easy injection molding. Manufacturing costs can be reduced.

Hereinafter, as an embodiment of a sliding structure according to the present invention, a raising and lowering window attached to a house building will be described in detail based on the drawings.
FIG. 1 is a perspective view showing a raising and lowering window type sash window 1 of the present embodiment. The sash window 1 has an upper and lower two-stage structure including an upper upper shoji 10 and a lower lower shoji 20 in the main body frame 2. The window glass 11 of the upper shoji 10 is fixed in this case and does not open or close. The lower shoji 20 is entirely moved up and down with respect to the main body frame 2, and can be opened to the outside by being tilted indoors or outdoors at the moving position.

  In addition, as shown in FIGS. 1 to 3, the lower shoji 20 has a rectangular shoji frame 21 filled with glass 22, and grips a handle 23 provided on the upper frame of the shoji frame 21 so that it can be used indoors or outdoors. It can be defeated. The shoji frame 21 is connected to the main body frame 2 via pivotal support arms 24, 24 on both sides thereof. That is, the upper end portion which is one end side of the support arm 24 is rotatably connected to the shoji frame 21 by the hinge pin 25, and the lower end portion which is the other end portion is connected through the sliding body structure described below in the present invention. It is connected to the main body frame 2 side by a hinge pin 26 so as to be movable up and down.

  In the sliding body structure, on both sides of the main body frame 2, the guide shafts 3 extend in the vertical direction in parallel with the frame body, and are coupled via brackets 4 and 5 at the upper and lower ends thereof. On the outer periphery of the guide shaft 3, a movable block 6, which is a moving body in the present invention, is slidably fitted with a shaft length L as a moving stroke. The lower end of the support arm 24 is connected to the movable block 6 by a hinge pin 26.

  In addition, as shown in FIG. 3 which is a cross-sectional view taken along the line AA in FIG. 2 and FIG. 4 which is a partial cross-sectional view of the moving body, the movable block 6 does not slide directly on the outer peripheral surface of the guide shaft 3. Instead, a cylindrical sliding bush 7 is fitted between the sliding surfaces of both members, and the movable block 6 slides up and down on the guide shaft 3 via the sliding bush 7.

  With the above configuration, as shown in FIG. 5, the lower door 20 is lifted upward, and the outside air is released by pulling it down, for example, inside the room at a desired position. When the lower shoji 20 is pulled up, the movable block 6 is guided and slid by the guide shaft 3 on the main body frame 2 side.

  The sliding bush 7 has a balancer function and a brake function that are made of a rubber material that can be slidably contacted on the guide shaft 3 and can fix the shoji to an arbitrary position by a required frictional force. It uses a molded product obtained by injection molding a mixture of poly (ε-caprolactam), which is called 6-nylon, with high-density polyethylene and glass fibers that can be molded by a general-purpose injection molding machine. .

  In general, high-density polyethylene cannot be injection-molded by general-purpose injection molding machines (general-purpose injection molding machines), but high-density polyethylene that can be injection-molded by general-purpose injection molding machines has also been developed. Commercially available products such as high-density polyethylene of the product Lübmer series are used as they are in the present invention. These high density polyethylenes have a molecular weight of about 200,000 to 800,000. Moreover, as glass fiber, what is generally used for reinforcement | strengthening of a polyamide resin is used.

  Each of these components is 65 to 75% by weight, preferably about 70% by weight of poly (ε-caprolactam) as a main component, 20 to 25% by weight of high-density polyethylene moldable with a general-purpose injection molding machine, Glass fibers are used in a proportion of 5 to 10% by weight. If the proportion of high-density polyethylene is less than this, sliding noise and abnormal noise at the time of starting / stopping are likely to occur. On the other hand, if it is used in a proportion higher than this, the wear resistance is impaired. Also, if the proportion of glass fiber is less than this, wear resistance will be impaired, while if it is used at a proportion greater than this, sliding noise and abnormal noise at start / stop are likely to occur. .

  Injection molding uses a general-purpose injection molding machine, for example, molding a glass fiber-blended blend resin of 6-nylon alloy type high-density polyethylene and glass fiber reinforced type 6-nylon into a sliding bush shape. Is done by.

  Next, the present invention will be described with reference to examples.

Example
A mixture of 6-nylon alloy type high density polyethylene (Mitsui Chemicals' Lubemer LS4160) and glass fiber reinforced type 6 nylon (Toray product CM1003G-30) is added to a general-purpose injection molding machine (TM-130 manufactured by Toyo Seiki Co., Ltd.). ) Was injection molded into a cylindrical sliding bush shown in FIG. The mixing ratio of 6-nylon and high-density polyethylene was adjusted by measuring 6-nylon alloy type high-density polyethylene and glass fiber reinforced type 6-nylon.

As shown in FIG. 4, this sliding bush is inserted between the shaft 3 and the movable block (moving body) 6, and a sliding test under a room temperature condition (reciprocating test; load 0.27 MPa, speed 320 mm / second, The result was as shown in Table 1 below.
Table 1
No. 6-Nylon high density PE glass fiber wear (mm)
1 70%-30% 0.02mm
2 〃 7.5% 22.5% 〃
3 〃 15% 15% 〃
4 〃 20% 10% 〃
5 〃 22.5% 7.5% 〃
6 〃 25% 5% 〃
7 〃 30%-0.08mm
8-100%-0.33mm

In addition, a test piece having a thickness of 2 mm was injection-molded from the mixture of the mixing ratios described in No. 1 to 6 and No. 8, and the above-described Suzuki friction and wear test method (stress 0.4 MPa, linear velocity 96 to 1200 mm / second, The friction coefficient μ was measured using a mating material SUS304. The results obtained are shown in Table 2 below.
Table 2
Mixture speed V (mm / sec) Friction coefficient μ
No.1 100 0.2
200 0.4
No.2 100 0.2
200 0.3
700 0.3
800 0.4
950 0.55
No.3 100 0.2
200 0.2
700 0.3
950 0.55
No.4 100 0.2
200 0.2
500 0.3
1000 0.4
1200 0.55
No.5 100 0.2
200 0.2
700 0.3
1000 0.4
1200 0.5
No.6 100 0.2
200 0.2
800 0.3
1000 0.4
1200 0.5
No.8 100 0.2
800 0.2
1000 0.25
1200 0.4

  From the results shown in Tables 1-2, when high-density polyethylene is not added, the wear coefficient is small, but the wear coefficient is large. When the value of wear is nearly constant and low, and the change (increase) in the value of wear coefficient μ with respect to speed increases, μ changes tend to occur suddenly during deceleration and acceleration, and this tends to lead to the generation of sliding noise. It is suppressed.

In addition, the reciprocating bushing resistance characteristics (displacement amount-load) are as follows: 9 kgf of force is applied to the sliding bush fitted to the shaft with a shaft diameter of 8 mm, and the sliding bush moves at 50 mm / sec. When the mixture No. 1 and No. 5 were measured, the results shown in the following Table 3 were obtained.
Table 3
Travel (mm) Mixture No.1; Load N (kgf) Mixture No.5; Load N (kgf)
0 0 (0) 0 (0)
0.5 155 (15.8) 74 (7.6)
1 96 (9.8) 82 (8.4)
1.5 82 (8.4) 82 (8.4)
2.5 82 (8.4) 80 (8.2)
5 80 (8.2) 76 (7.8)
10 76 (7.8) 74 (7.6)
15 78 (8.0) 74 (7.6)
20 88 (9.0) 74 (7.6)

It is a perspective view which shows the raising / lowering window as embodiment of the sliding body structure concerning this invention. It is a front view which shows the sliding body structure in the shoji window of the raising / lowering window of this embodiment. It is AA sectional view taken on the line which shows the sliding body structure in the lowering window of the raising / lowering window of this embodiment. It is a fragmentary sectional view which shows the movable block and sliding bush as a moving body which are the principal parts of this Embodiment. It is a side view which shows the aspect open | released by pulling up and pulling down the lower shoji window of this Embodiment.

Explanation of symbols

1 Sash windows (raising and lowering windows)
2 Body frame 3 Guide shaft 4, 5 Shaft fixing bracket 6 Movable block (moving body)
7 Sliding bush 10 Upper shoji 11 Window glass 20 Lower shoji 21 Frame 22 Window glass 23 Handle 24 Support arm 25, 26 Hinge pin

Claims (4)

  The moving body slides on the guide shaft via the sliding bush, and the sliding bush is poly (ε-caprolactam) 65 to 75% by weight, high density polyethylene 20 to 20 that can be molded by a general-purpose injection molding machine A sliding structure characterized by being a molded product obtained by injection molding a mixture of 25% by weight and 5 to 10% by weight of glass fiber.   The sliding body structure according to claim 1, wherein the high-density polyethylene that can be molded by a general-purpose injection molding machine is Lübmer (registered trademark; Mitsui Chemicals).   A shoji that can be lifted and lowered to a part of the sash window attached to the house building and can be opened indoors or tilted to the indoor side or the outdoor side is inserted into each of the guide shafts on both sides of the body frame of the sash window. A pair of left and right movable blocks as movable bodies to be guided are slidable in the vertical direction, by connecting one end of the link type support arm to the movable block and connecting the other end to the frame of the shoji, The sliding body structure of the raising and lowering window that supports the vertical sliding and tilting movement of the shoji, and the movable block that slides up and down on the guide shaft fits and slides on the outer peripheral surface of the guide shaft The sliding body structure according to claim 1, wherein the sliding body structure is movable through a bush. 4. The sliding bush is provided with a balancer function and a brake function, which are made of a rubber material that can be slidably contacted on the guide shaft and can fix the shoji to an arbitrary position by a required frictional force. Sliding body structure for raising and lowering windows.

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