ES2831864T3 - Lifting system for an emergency glass of a vehicle - Google Patents

Abstract

A lifting system (10) to vertically slide an object (5) in a linear guide (13) formed in a panel (4) of a door (3), comprising: - a first rigid element (15) articulated in a first end (15a) of said first element (15) at a first pivot point (A) positionable on a lower edge of said panel (4) and below said object (5); characterized in that the lifting system (10) further comprises: - a second rigid element (16) articulated at a second pivot point (B) to said object (5) and at a third pivot point (C) placed in a second end (15b) of said first rigid element (15); - a jack (20) comprising a main body (21) and a rod (22) configured to exit from the main body (21), the end of the rod (22) is articulated at said second pivot point (B) and the opposite end of the main body (21) is articulated at a fourth pivot point (D) that is positioned between said first pivot point and said third pivot point (A, C) on said first rigid element (15), connecting said second rigid element (16) the second pivot point (B) and the third pivot point (C) in such a way that a vertical movement of the second pivot point (B) causes a vertical movement of the third pivot point (C ).

Description

DESCRIPTION

Lifting system for an emergency glass of a vehicle

The present invention relates to a lifting system, in particular a lifting system for an emergency glass of a public passenger transport vehicle.

Public passenger transport vehicles generally comprise a security door positioned near the driver of the vehicle.

The door beneficially comprises a movable glass panel designed to isolate the driver from the rest of the interior of the vehicle.

Typically the glass can be moved vertically by a pneumatic jack configured to lift it. This jack is placed vertically on the axis of the door and pushes the glass completely in the vertical direction.

To ensure the complete path of the glass for closing, therefore, it is not possible to use standard jacks; As a result, the jacks that are typically used for security gates are very expensive.

However, current systems cannot be moved to other door positions without increasing their size. Known systems are disclosed in prior art documents DE4207924 A1, US2335696 A1. Therefore, it is necessary to improve emergency glass lifting systems in the security doors of public passenger transport vehicles, ensuring that the systems are not bulky and that they are also versatile, cost-effective and easy to manufacture.

The invention aims to solve the problems mentioned above.

The aforementioned objects are achieved by a system according to claim 1.

Other features and advantages of the invention will be apparent from the following non-limiting description, provided for illustrative purposes, with reference to the accompanying drawings, in which:

• Figure 1 is a perspective view of the interior of a vehicle comprising a lifting system according to the present invention;

• Figure 2 is a front view of the lifting system according to the present invention in a compressed configuration;

• Figure 3 is a front view of the system of Figure 2 in an operational configuration;

• Figures 4a to 4c are front views of the system of Figure 2 in various operating configurations.

Figure 1 shows the interior of a vehicle 1, in particular the space close to the driver's cabin 2. The cabin 2 can be closed by means of a door 3 hinged on a frame that is fixed with respect to the vehicle 1.

The door 3 preferably comprises a lower panel 4 configured to receive inside an emergency glass 5 configured to be vertically movable with respect to the panel 4 and a lifting system 10 for the glass 5.

The lifting system 10 (figures 2 and 3) is placed under the glass 5 and on a lower edge 11 of the panel 4. The glass 5 can slide vertically thanks to a sliding rail 13, formed in the panel 4 and in which the rollers 14, fixed to glass 5, can roll.

The lifting system 10 comprises:

• a first rigid element 15, which is articulated at a first end 15a of the first element at a first pivot point A positioned under the glass 5,

• a second rigid element 16, which is articulated at a second pivot point B located at one end 5a of the glass 5 and which is articulated at a third pivot point C located at a second end 15b of the first element 15,

• a jack 20 comprising a main body 21 and a rod 22 configured to exit the body 21; the end of the rod 22 is hinged at the second pivot point B and the opposite end of the body 22 is hinged at a fourth pivot point C which is positioned between the first and second pivot points A, C on the first rigid element 15.

The second element 16 connects the second pivot point B and the third pivot point C so that a vertical movement of the second pivot point B causes a vertical movement of the pivot point C.

The second element 16 is preferably a substantially "L" shaped bar defining a triangle with the pivot points B, C. Beneficially, the short side of the "L" articulates at the third pivot point C.

The first element 15 preferably has a substantially "U" shaped section and is of dimensions such as to house therein, at least partially, the body 21 of the jack 20 when the system 10 is in a compressed operative position.

During operation, the jack 20 is preferably inclined relative to the vertical. The jack 20 is a standard jack whose rod 22 is dimensioned to have a stroke preferably between 20 and 150 mm to ensure a minimum travel of the glass of between 5 and 900 mm.

The first, third and fourth pivot points A, C, D are preferably positioned along a shared line connecting them to each other. This line of conjunction is preferably a line of symmetry of the first element 15. In known manner, the stroke of the jack is controlled by a control device, not shown.

The operation of the lifting system for an emergency glass of a public passenger transport vehicle is as follows.

In a first operative stage, the emergency glass 5 is completely inside the panel 4 and the system 10 is in a compressed position (figure 2).

When the driver wants to lift the emergency glass 5, the extension of the rod 22 of the jack 20. As the rod progressively leaves the body 21 of the jack 20, the first element 15 rises, being articulated at the first point pivot A (Figures 4a-4c).

The elevation of the first element 15 is possible thanks to the rigid connection between the second and third pivot points B, C.

The jack 20 can be extended due to the fact that the end of the body 21 is hinged at the fourth pivot point D; the jack 20 can thus be extended and, at the same time, the first element 15 can be raised articulating at the first pivot point A.

From the aforementioned, the advantages of a lifting system for an emergency glass of a public passenger transport vehicle according to the present invention are evident.

Thanks to system 10, the jack 20 used to lift the glass 5 is a standard jack of minimum size. But still, the use of a standard jack allows to reduce costs.

Again, the system 10 can be placed anywhere within the panel 4, changing the shape of the first and second rigid elements 15, 16.

Lastly, it is evident that the lifting system for an emergency glass of a public passenger transport vehicle according to the present invention can be subject to modifications and variations without departing, therefore, from the protective scope of the claims.

For example, the shape or section of the first and second elements 15, 16 can be changed based on the positioning of the system 10 with respect to the glass 5 within the panel 4.

Claims (10)

1. A lifting system (10) to vertically slide an object (5) in a linear guide (13) formed in a panel (4) of a door (3), comprising: • a first rigid element (15) articulated at a first end (15a) of said first element (15) at a first pivot point (A) positionable on a lower edge of said panel (4) and under said object (5 ); characterized in that the lifting system (10) further comprises: • a second rigid element (16) articulated at a second pivot point (B) to said object (5) and at a third pivot point (C) positioned at a second end (15b) of said first rigid element (15) ; • a jack (20) comprising a main body (21) and a rod (22) configured to exit from the main body (21), the end of the rod (22) is articulated at said second pivot point (B) and the opposite end of the main body (21) is articulated at a fourth pivot point (D) that is positioned between said first pivot point and said third pivot point (A, C) on said first rigid element (15), said second rigid element (16) connecting the second pivot point (B) and the third pivot point (C) in such a way that a vertical movement of the second pivot point (B) causes a vertical movement of the third pivot point ( C). The system according to claim 1, characterized in that said jack (20) is continuously inclined vertically during the entire stroke of said object (5) in said linear guide (13). The system according to claim 1 or 2, characterized in that said first rigid element (15) is configured to receive, at least partially, said jack (20) in a compressed position of said system (10). 4. The system according to any one of the preceding claims, characterized in that said jack (20) is pneumatic and has a stroke of between 20 and 150 mm. The system according to any one of the preceding claims, characterized in that said first rigid element (15) has a profile with a "U" shaped section. The system according to any one of the preceding claims characterized in that said second rigid element (16) is a substantially "L" shaped bar. The system according to claim 6, characterized in that the shorter side of the "L" is articulated at the third pivot point (C). The system according to any one of the preceding claims characterized in that said first, said third and said fourth pivot point (A, C, D) are placed on a shared line. The system according to claim 8, characterized in that said shared line is a line of symmetry of said first rigid object (15). 10. A road vehicle comprising a lifting system (10), according to any one of the preceding claims, for the emergency glass of a security door of said vehicle.