JPH0213593Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement of a noise prevention device for a gutter cover installed in a road gutter or the like.

(Prior art) Conventionally, in this type of noise prevention device for a gutter cover,
For example, as a device to prevent the gutter cover from jumping up and the metal impact noise that occurs when a vehicle passes over the gutter cover laid on a roadside gutter, etc.,
The one shown in Publication No. 12310 is known.

This device has a noise prevention spring attached to the end plate of the gutter cover.
It has a pair of parallel holding parts whose lower parts are continuous with a U-shaped curved part, and among both parallel holding parts, the upper end of one is bent outward, and the upper end of the other is once bent outward. , which is folded inward in a U-shape, and its shape is extremely complicated.

Furthermore, this spring is formed by pressing a metal plate such as spring steel, and the above spring has two U-shaped folded parts, one at the lower part and the upper end of one of the parallel holding parts, and each folded part Since two or more bending steps are required for each bending process, the manufacturing process is complicated and the cost is extremely high. Moreover, since the pair of parallel holding parts, which are the main parts of the spring, are literally parallel and the distance between them is constant in the vertical direction, the distance between the parallel holding parts and the thickness of the end plate of the groove cover must be precisely matched. , the holding function of the parallel holding part cannot be achieved, and it becomes easy to come off. Therefore, high precision machining is required, and each time the thickness dimension of the end plate of the groove cover changes, a spring corresponding to the dimension must be manufactured. However, there were problems such as the spring's lack of versatility.

(Purpose of the invention) The present invention was devised to solve these problems, and it has a simple structure, can be easily manufactured, and can reduce costs.
Even if the thickness of the end plate of the gutter cover changes to some extent, the noise preventer can be easily and reliably attached to the end plate, and there is no possibility that the noise preventer will come off or the gutter cover will lift up. To provide a device that can reliably prevent rattling and metallic sounds from occurring.

(Structure of the invention) In the present invention, a noise prevention device is attached from the lower end to the end plate of the groove cover, which is installed between receiving frames fixed on both sides of the opening of the groove, and this noise prevention device is attached to a pair of noise prevention devices facing each other inside and outside. The lower ends of the clamping pieces are integrally formed through a substantially U-shaped curved part, and the clamping pieces are arranged such that the interval between the intermediate parts is smaller than the interval between the lower ends and between the upper ends. The intermediate portions of the two are bent inwardly at an obtuse angle, the outer clamping piece is provided with a cut-and-raised protruding piece that protrudes inwardly downward, and the end plate is clamped by the intermediate bent part of both clamping pieces, The tip of the cut-and-raised protruding piece is pressed against the side surface of the end plate, and the upper end of the outer clamping piece is pressed against the inner surface of the receiving frame.

(Example) FIGS. 1 to 3 show an example of the noise prevention device 1,
This noise prevention device 4 is formed by integrally connecting and molding a pair of clamping pieces 2 and 3 facing each other on the inside and outside through a substantially U-shaped lower end curved part 4, and both clamping pieces 2 and 3 are located in the middle in the vertical direction. the parts are bent inwardly at an obtuse angle,
The interval between the holding pieces 2 and 3 is formed so that it gradually becomes smaller from the lower end curved portion 4 to the intermediate bent portions 5 and 6, and then gradually becomes larger as it reaches the upper end. Then, in the outer clamping piece 3, the bent portion 6
A cut-and-raised protrusion 7 that protrudes inwardly and downwardly is provided in the upper intermediate portion. Further, a notch 8 is provided from the middle part in the width direction of the inner clamping piece 2 to the lower end curved part 4.

The noise prevention device 1 is formed by pressing a metal plate such as spring steel, but it may also be formed from a metal plate other than spring steel or a synthetic resin. Furthermore, two or more raised protrusions 7 may be provided, and the notch 8 may be omitted.

Figures 4 and 5 show the state of use.
The noise prevention device 1 is fitted into left and right (one not shown) end plates 12 of the groove cover 11 from below. In this case, since the upper halves of both the clamping pieces 2 and 3 of the noise prevention device 1 are bent upwardly,
The end plate 12 can be easily pushed between the holding pieces 2 and 3.

In addition, the interval between the intermediate bent portions 5 and 6 of both the clamping pieces 2 and 3 is smaller than the interval between the upper and lower portions, and the end plate 12
Since the thickness of the end plate 12 is smaller than that of the end plate 12
Even if there is some dimensional error in the thickness, the spring force of both clamping pieces 2, 3 can be maintained by pushing the end plate 12 between both clamping pieces 2, 3 against the spring force of both clamping pieces 2, 3. By using force, the end plate 12 can be firmly held between the intermediate bent portions 5 and 6.

Moreover, when the noise prevention device 1 is installed, the tip 9 of the cut and raised protrusion piece 7 bites into the outer surface of the end plate 12, and this bite and the clamping by the intermediate bent portions 5 and 6 act as two effects. Therefore, the attachment state of the noise prevention device 1 to the end plate 12 can be firmly maintained.

Furthermore, by setting the main member 13 of the groove cover 11 in the notch 8 provided in the middle part of the inner clamping piece 2, the noise preventer 1 can be prevented from shifting in the longitudinal direction of the end plate 12. It can be prevented. Thereby, even if the noise prevention device 1 is attached to the end plate 12 of the groove cover 11 in advance and transported, there is no risk that the noise prevention device 1 will come off, and handling thereof becomes easy.

With the noise prevention device 1 attached to the end plate 12 of the groove cover 11 in this manner, the groove cover 11 is fitted and installed on the receiving frame 15 provided on both sides of the opening of the groove. At this time, the groove cover 11 is fitted between the receiving frames 15 against the spring force of the outer clamping piece 6 of the noise prevention tool 1. after that,
The main member 13 of the groove cover 11 is supported on the horizontal upper surface of the receiving frame 15, and the upper end 10 of the outer clamping piece 3
cuts into the inner surface of the vertical portion of the receiving frame 15, and the tip 9 of the cut and raised protrusion piece 7 further bites into the outer surface of the end plate 12. Joints 16 are formed between the left and right end plates 12 of the groove cover 11 and the receiving frame 15 by the respective spring forces of the outside clamping pieces 3 and the cut and raised protruding pieces 7.
are held evenly on the left and right sides, the biting state of each part is ensured, and the groove cover 11 is firmly fixed to the receiving frame 15. Therefore, even if a vehicle passes over the gutter cover 11 afterwards, the gutter cover 1
1 does not float up, and there is no impact sound between metals.

(Effects of the invention) As described above, the present invention achieves the clamping action by the intermediate bent portions of both the inner and outer clamping pieces, the biting action of the outer clamping piece against the receiving frame, and the biting action of the cut and raised protruding pieces against the groove cover end plate. The groove cover is fixed between the receiving frames by means of a screw, and the structure and manufacturing process of the noise prevention device can be simplified compared to the conventional products mentioned above, and it can be manufactured easily and costs can be reduced. can. Furthermore, even if the thickness of the end plate of the groove cover changes somewhat, the noise prevention device can be easily and reliably attached to the end plate, and the versatility of the noise prevention device can be improved. Moreover, it is possible to reliably prevent the noise prevention device from coming off, the groove cover from lifting up, rattling, and generating metallic sounds after installation.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of a noise prevention device used in the device of the present invention, Fig. 2 is a side view thereof, Fig. 3 is a longitudinal sectional view thereof, and Fig. 4 is a longitudinal sectional view showing the state of use. FIG. 5 is a sectional view taken along the line V-V in FIG. 4. 1... Noise prevention tool, 2... Inner clamping piece, 3...
... Outer clamping piece, 4 ... Lower end curved part, 5, 6 ... Middle bent part, 7 ... Cut and raised protrusion piece, 11 ... Groove cover, 1
2... end plate, 13... main member, 15... receiving frame.

Claims (1)

[Scope of utility model registration request] A noise prevention device is attached from the bottom end to the end plate of the groove cover, which is installed between the receiving frames fixed on both sides of the groove opening.
This noise prevention device is constructed by integrally forming the lower ends of a pair of clamping pieces facing each other on the inside and outside through a substantially U-shaped curved part. The intermediate portions of both the intermediate portions are bent inwardly at an obtuse angle so that the interval between the intermediate portions becomes small, and the outer clamping piece is provided with a cut-and-raised protrusion that projects downwardly inward, and the intermediate bent portion of both clamping pieces is bent inwardly at an obtuse angle. The end plate is held by the groove lid, the tip of the raised protrusion is pressed against the side surface of the end plate, and the upper end of the outer holding piece is pressed against the inner surface of the receiving frame. Noise prevention device.