JPS644622Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to industrial vehicles such as forklifts, and more particularly to the structure of an engine hood seal used to seal the engine compartment.

(Prior Art) As shown in FIG. 1, the engine hood 1 of a conventional industrial vehicle, for example, a forklift, is
By attaching a seal 5 to the periphery of the opening, which is the contact surface with the frame 2 side, leakage of noise from the engine room is prevented.

(Problem to be solved by the invention) Conventionally, as shown in Fig. 3, the engine hood 1
A sealing structure in which a sponge 15 is attached to the peripheral edge 1a of the opening of the engine hood 1 is common, but while this method provides good sealing performance, it is considerably large (thickness and width) considering the weight of the engine hood 1. ), it has poor weather resistance, and since it is constantly bearing the weight of the engine hood 1, there is a problem that the pores are crushed and the repulsion (restoring force) is reduced. Pasting No. 15 was troublesome.

Therefore, in order to solve the above-mentioned problems, the present invention aims to provide the seal with a portion that is responsible for the weight of the engine hood and a portion that is responsible for airtightness alternately, as a technical problem to be solved. .

(Means for Solving the Problem) The technical means for solving the above problem is to attach the engine hood seal to the mounting part attached to the periphery of the opening of the engine hood and to the frame of the vehicle to seal the engine compartment. The mounting part is made of rubber and has a substantially C-shaped cross section so that it can be fitted onto the peripheral edge, and a spring material is provided inside for clamping. The seal portion is formed with a hollow tube mainly made of sponge-based rubber, and rubber or sponge-based rubber is inserted into appropriate locations at predetermined intervals to absorb the load. While forming a solid part as a section, an air escape hole is provided in a hollow part as an air chamber formed between the solid parts.

(Function) Therefore, the solid part of the seal primarily bears the weight of the engine hood due to its hardness, and maintains airtightness against the frame by the outer tube, while the solid part The flexible hollow portion maintains airtightness by deforming appropriately to prevent the air chamber from completely collapsing, regardless of the flatness of the frame.

(Embodiment) Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In Fig. 1, reference numeral 1 denotes an engine hood that is placed on a forklift frame 2 to cover an engine compartment, and its upper rear end is attached to the upper end surface of a counterweight 3 via a hinge 4 so as to be able to open and close. An opening peripheral portion 1a of the engine hood 1 is bent inward, and an engine hood seal 5 is attached as a sealing member around the entire periphery of the opening peripheral portion 1a. The engine hood seal 5 has an attachment portion 6 for the opening peripheral portion 1a of the engine hood 1, as shown in Figs. 2 and 3,
The mounting portion 6 is made of rubber and has a substantially C-shaped cross section, with tongues 9 on the inner surfaces of upper and lower fitting pieces 8 that form the C shape. A spring material 10, also having a substantially C-shaped cross section, is contained inside the mounting portion 6 for clamping, and this spring material 10 gives the mounting portion 6 sufficient hardness. The engine hood seal 5 is fixed to the opening periphery 1a between the fitting pieces of the mounting portion 6.
By inserting the spring material 10 into the engine hood 1, the spring material 10 is fitted around the opening periphery 1a of the engine hood 1 by utilizing the clamping force of the spring material 10.

On the other hand, the main body of the sealing part 7 is composed of a cylindrical tube 11 mainly made of sponge rubber. It is glued to 6a. Thus, the seal portion 7 has a solid portion in the area A shown in FIG. 1, and a hollow portion in the other portions. That is, rubber or sponge rubber is charged in the area A in the tube 11 to form a solid load receiving portion 12 as shown in FIG. The type and amount of charged rubber are adjusted so that the load receiving portion 12 has a suitable hardness suitable for receiving the weight of the engine hood 1. In addition, the portion other than the portion A shown in FIG. 1 of the tube 11, that is, the load receiving portion 12
As shown in FIG. 2, a hollow air chamber 13 is formed in between, and an air escape hole 14 is formed in the air chamber 13. Therefore, the hollow portion including the air chamber 13 has more flexibility than the load receiving portion 12.

The engine hood seal of this embodiment is constructed as described above, and therefore the engine hood seal 1
When the engine compartment is closed, the engine compartment is sealed by contacting the upper surface of the frame 2 as shown in FIGS. The air chamber 13 receives the weight of the hood and the weight of the driver.
and a hollow portion having a relief hole 14 is moderate, and
It is brought into contact with the upper surface of the frame 1 with uniform elastic deformation. As a result, a good sealing effect can be obtained, and since the load that the hollow part receives is small, the elastic force (restoring force) of the hollow part is maintained over a long period of time.

(Effects of the invention) As described above, according to the engine hood seal of the invention, the load of the engine hood is received by the solid part serving as the load receiving part which is arranged in a dotted manner. Since the hollow part can be brought into close contact with the frame with appropriate elastic deformation, it is possible to exert a uniform and reliable sealing effect over a long period of time, and it is effective in extending the life of the frame without applying excessive loads. be. Furthermore, since the seal of the present invention has an attachment part, it is extremely easy to attach it to the engine hood.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the entire engine hood seal attached to an engine hood showing an embodiment of the present invention, Fig. 2 is a sectional view showing the solid part of the engine hood seal, and Fig. 3 is an engine hood seal. FIG. 4 and FIG. 5 are cross-sectional views showing the solid portion and hollow portion when sealed, and FIG. 6 is a cross-sectional view showing a conventional example. 1... Engine hood, 1a... Opening periphery,
2...Frame, 5...Seal, 6...Mounting part,
7... Seal part, 10... Spring material, 11... Tube, 12... Load receiving part, 13... Air chamber, 1
4...Escape hole.

Claims (1)

[Scope of utility model registration request] An engine hood seal consisting of a mounting part attached to the periphery of the opening of the engine hood, and a sealing part that contacts the frame of the vehicle to seal the engine room, the mounting part being able to fit into the periphery of the opening. It is made of rubber and has a substantially C-shaped cross section, and has a spring material inside for clamping, and the seal part is formed with a hollow tube mainly made of sponge rubber. At the same time, solid parts as load receiving parts are formed by inserting rubber or sponge rubber into appropriate locations within the tube at predetermined intervals, while air between the solid parts is formed. The structure of an engine hood seal for industrial vehicles is characterized in that a hollow part serving as a chamber is provided with an air escape hole.