HU191517B - Device for automatic back opening first the doors or sliding doors of passenger vehicles operated by rotary column - Google Patents

Abstract

The device possesses, in addition to a door-actuating means, a force-limiting unit which consists of two relatively displaceable but positively interconnected elements attached to any one of the elements participating in the force transmission and of an element pressing these together. One element of the force-limiting unit is connected to an electrical switch which controls the door-actuating unit with the effect of opening the door. <IMAGE>

Description

BACKGROUND OF THE INVENTION The present invention relates to a mechanism for automatically opening (reversing) doors or sliding doors of vehicles, particularly passenger vehicles, which are actuated when the door is prevented from moving during locking, for example when persons or objects are trapped.

It is known that the movement - opening or closing - of doors of passenger vehicles is mainly accomplished by linear-cylindrical or rotary-cylinder pneumatic actuators. The primary consideration for these door actuators is to make the door lock. At the same time, certain types of these door actuators (especially exterior and interior swing doors and sliding doors) have a significant risk of being trapped between the wings and of the door leaf and the door frame, providing secure closing and the necessary performance. frequency. To avoid this, there is now a requirement for passenger vehicle door actuators that when a person or object, such as a door locking element, enters the movement area of the door leaf when the door is closed, the pneumatic cylinder actuating the door door is the so-called. the barrier element was pressed with relatively permissible force.

There are many ways to avoid such an accident, i.e. to automatically open the door as described above (to reverse the closing of the door). There are purely electrical solutions, such as the one described in the USG 7 720 273, which consists in the use of a so-called "sash" located along part of the perimeter of the door leaf. inserting elements inside the finger guard rubber which, when the finger guard rubber is depressed, provide an electrical signal to actuate the drive cylinder for opening. The disadvantage of this type of solution is that the sensing elements are cumbersome to install in the finger protection strip and their function is uncertain, especially at the bottom and top of the door.

There are purely pneumatic solutions, such as the one described in German Patent No. 1,809,675, in which the pressure difference between the two chambers of the drive roller is measured by a so-called. by means of a differential pressure sensor, which sensor provides the drive cylinder with an opening signal if the differential pressure between the two chambers of the cylinder exceeds a specified value.

The disadvantages of these solutions are that they are very sensitive to temperature, so that the amount of force applied to the obstruction element cannot be accurately adjusted or adjusted regularly depending on the weather. The above drawbacks are overcome by the solution disclosed in German Patent Publication No. 2 928 315, which solves the automatic opening of the door by electromechanical means by placing a spring-loaded actuator on the piston rod of the drive cylinder, which is dependent on in the event of disruption of movement, actuates an electric switch via a pin located on the piston rod. This causes the drive cylinder to receive a signal in the opening direction. The disadvantage of this solution is that the spring load is equal to the tensile force on the piston rod, so a strong, high-capacity spring is required. Frequent wire breakage (fatigue fracture) occurs because the electrical switch is located on the piston rod, so that its electrical wire moves over relatively long distances (between two end positions of the piston rod).

SUMMARY OF THE INVENTION The object of the present invention is to eliminate the aforementioned deficiencies, i.e. to provide a relatively small space-saving automatic opening mechanism which can be retrofitted to the door actuator, whereby the spring load can be significantly reduced, and the electric switch component. It is a further object of the present invention to maintain the force of the door blocking force within a specified tolerance and to allow the force to be adjusted steplessly by simple means, and to provide a displacement of the structure for actuating the electrical contact.

The present invention is based on the discovery that, in order to eliminate the force imbalance in the event of a door being blocked, any of the elements participating in the transmission has a force limiting unit consisting of two forced elements and a resilient element clamping the elements. one of them may move towards a known electrical contact and operate an electrical switch. The response value of the force limiting unit is determined by the design of the forced path and the degree of prestressing of the flexible member.

The invention will be described in more detail with reference to the drawing, which illustrates an exemplary embodiment of the invention. In the drawing:

Fig. 1 is a perspective view of the top of a linear-cylindrical pneumatic swing door with the reversing device of the present invention mounted between the cylinder and the cylinder mount, viewed from the inside of the vehicle;

Figure 2 is a sectional view taken along line A-A in Figure 1;

Fig. 3 shows the top of a linear-cylindrical pneumatic swing door with the reversing device according to the invention mounted in the piston rod connector and the crank, viewed from the inside of the vehicle;

Figure 4 is a detail of Figure 3 on a relatively larger scale;

Figure 5 is a sectional view taken along plane B-B in Figure 3;

Fig. 6 is a bottom view of a rotating pneumatic actuated swing door, with the reversing device of the invention mounted between the pivot drive shaft and the pivot, viewed from the inside of the vehicle;

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Fig. 7 is a detail of Fig. 6, partially enlarged in section;

Figure 8 is a sectional view taken along line C-C in Figure 7;

Figure 9 is a top view of a centrally driven swing door with the reversing device of the present invention mounted between the pivot drive shaft and the pivot assembly from the inside of the vehicle;

Figure 10 is a sectional view taken along line D-D of Figure 9.

1 and 2 illustrate an exemplary embodiment of a linear-cylindrical pneumatic door actuator with automatic opening (reversing mechanism). Here, the rotation of the pivot 5 and thereby the movement of the door 6 is effected by rotating the crank 4 by means of a piston rod connection 3 connected to a piston rod 2 pneumatic cylinder 1.

The device for automatically opening the door 6 has a force limiting unit E, which is arranged in a body 7. The body 7 is fixedly connected to the cylinder 1 via the pin 8 of the force limiting unit E and rotatably in a horizontal plane to the support element 14. The pin 8 is fixedly connected to the cylinder 1 and is displaceable axially in _the bore 7A of the body 7. The pin 8 has two oblique flaps 13 having a 13 _A angle.

The hole 7 _{of the} body perpendicular to the bore 7 7 _B is formed, which shoulder 9 displaceable tensioning element is arranged against a spring force of spring 10, which is also part of the limiters of this units. The prestressing of the spring 10 is determined by the position of the locking screw 11. The upper section of Figure 2. The biasing shoulder 9 also has ₁₃ ékszögű 13 lelapoiásokkal. A. A body 12 is provided with a coupling member 12 which holds _the contact 12A cooperating with the free end of the shoulder tensioner 9.

The operation of the reversing device of Figures 1 and 2 is as follows:

When the door 6 closes, the piston rod 2 of the cylinder 1 makes a movement approaching the support 14. In the event that the door 6 encounters an obstacle during closing, the pivot 5 and consequently the crank 4 and the piston rod 2 cannot move due to the aforementioned reasons, the cylinder 1 will move away from the support 14. As soon as this removal force exceeds the value determined by _the wedge 13 of _the flattening 13 and the spring tension of the spring 9, the pin 8 moves in the axial direction with the cylinder 1.

Consequently, the shoulder 9 by biasing the corresponding flats 13 moves outwardly bore 7 _B, and thereby the contact 12 _{of the} contact, and the connection piece 12 in this case generates an electric control signal is needed to open the door. The triggering force of _the opening is dependent on the choice of _the wedge 13 of _the flap 13 and can be infinitely controlled by the degree of pretension of the spring 10 by means of the locking screw 11.

3-5. Figures 3 to 5 show another exemplary embodiment of the reversing mechanism, also for linear-cylindrical pneumatic drive swing doors. The elements of the force limiting unit E of the door reversing device are located here in a piston rod connection 31 and a crank 41. The actuation of the pivot 5 and thereby the movement of the door 6 is performed by rotating the crank 41 via the piston rod connector 31 connected to the piston rod 2. The piston connector 31 is fixedly fixed to the piston rod 2 and the pin 20 therein holds the roller 15 in contact with _the slope 16A of the shoulder tensioner 16 against the spring 17. The prestressing value of the spring 17 is determined by the position of the locking screw 18. The roller 15 'of the crank 41 _{of the} opening 41, the shoulder 16 and tension member 41 to move the crank bore _41B against the spring 17 (Figure 5).

The coupling member 19 fixed to the crank 41 holds the contact 19 _A cooperating with the shoulder tensioning member 16.

3-5. The operation of the reversing device of Figures 1 to 2 is substantially the same as that of the embodiment shown in Figures 1 and 2, except that the piston rod 4 2 is still close to the cylinder 1 when the door 6 is prevented from closing and thereby rotating the pivot 5 you want to move. When this inward pulling force exceeds the value defined by _the slope 16A of the shoulder tensioner 16 and the bias of the spring 17, the roller 15 moves in _the opening 41A. This causes the tension member shoulder 16 is displaced axially in the bore _41B and the contact 19 _{of the} contact. Thus, the actuator 19 generates a control signal for opening the door. The opening trigger force is adjusted, as in the previous embodiment, by means of the locking screw 18.

6-10. Figures 3 to 5 show yet another exemplary embodiments of a reversing device according to the present invention for swinging cylindrical pneumatic drive swing doors. 6-8. Figures 1 to 5 show an arrangement in which the force limiting unit E of the reversing device is housed in a housing 23 disposed between a rotary drive shaft 22 and a pivot 24. A bracket 33 attached to the body of the vehicle holds the housing 23 fixed to the rotary drive shaft 22 and the flexible support contact 32 (Figs. 7 and 8). A slope 29 is formed in the portion of the pivot 24 extending into the housing 23. The housing 23 has a bore 36 perpendicular to the axis of the pivot 24 for a shouldered tension member 28. The shoulder tension member 28 is a member of the force limiting assembly E, which may move against the spring 30 in the bore 36 toward the elastic support pin 32. The inner end of the shoulder tensioner 28 cooperates with the slope 29. The spring tension of the spring 30 is determined by the position of the stop screw 34. The housing 23 also has a fixed stop 26 which has a projection 27.

6-8. The operation of the solution shown in Figs.

When the door 6 closes, when the direction of rotation is anticlockwise, the actuator drive shaft 22 rotates the pivot 24 through the slope 29 of the shoulder tensioner 28. The 30th

The spring prestress of the spring 191 517 is determined by the locking screw 34 such that, normally, the shoulder tensioner 28, coupled to the slope 29 of the pivot 24, can transfer the torque of the pivot drive shaft 22 to the pivot 24.

If the door 6 encounters an obstacle while it is locked, it is prevented from rotating the pivot 24, but the rotary drive shaft 22 wants to turn further. If the applied torque exceeds the value determined by the slope 29 and the spring preload 30, the shoulder tensioner 28 moves axially through the slope 29 in the bore 36 against the spring 30 and engages the resilient contact 32. This creates an electrical control signal for opening.

In the closed position of the door 6, a fixed connection between the actuator drive shaft 22 and the pivot 24 is provided by the projection 27 of the stop pin 26. The opening trigger force can be adjusted by selecting the slope 29 and adjusting the locking screw 34.

9-10. 6-8. 1 through 2, wherein two doors are driven together by a single roller. The rotary drive shaft 22 is fixed in the housing 23. The house is situated 23 power limiter unit E tensioning shoulder 28, which is associated with _the translation unit 24. The translator unit 24 _of connecting rods 51, the rod 51 is hingedly connected to the connecting stub 4. The connection piece 4 is fixed to the pivot 5.

In terms of operation, this variant is substantially the same as in Figures 6-8. but here the torque of the drive shaft 22 is taken over by _the turning unit 24.

The automatic opening mechanism according to the invention can be incorporated into the door actuators of both linear and rotary pneumatic actuators for external or internal swing doors or sliding doors. The main advantage of the structure is that the value of the compressive force exerted by an obstacle entering or entering the closing zone during closure can be adjusted easily but safely within the desired tolerances by a slope element and by varying the force of the adjustable biasing spring. Another benefit is that you keep the set value for a very long time, so there is no need for constant correction. In addition, it operates safely, even in extreme weather conditions. Most of the door actuators currently in use can be retrofitted with the opening device of the present invention at relatively low cost.

Claims (9)

A device for automatically reversing a revolving door or sliding door of a vehicle, in particular a passenger vehicle, characterized in that power transmission elements other than the door actuator (1), such as a body, a crank arm, a piston rod connector, a pivoting unit (7); _24; 31; two elements placed 41) any of which is relatively movable, but fixed to each other in a forced connection, such as tap, expansion element, roller, forgóoszlopból (8; 9; 15; 16; 24; 28), and these together clamp resilient member, spring ( 10; 17; 30) having a stationary force limiting unit (E), wherein one of the elements (9; 16; 28) of the force limiting unit (E) is in one position by an electric switch (12; 19) controlling the door actuator (1); is related. Device according to Claim 1, characterized in that the two cooperating elements (8; 9) of the force limiting unit (E) and the electrical switch (12) are fixed to the door actuator (1), which is designed as a slave cylinder. (7) is placed. Device according to Claim 1, characterized in that the two cooperating elements (15; 16) of the force limiting unit (E) are connected to the piston rod connector (31) fixedly to the piston rod (2) of the cylinder (1) and to the electric switch (31). 19) is also housed in a support crank (41). Device according to Claim 1, characterized in that one of the two force-coupling elements of the force limiting unit (E), i.e. the tensioning element (28), is located in a housing (23) fixed to its output shaft perpendicular to the pivot (24). the other element being formed as part of the rotating column (24), the portion of the rotating column (24) extending into the housing (23). Device according to Claim 1, characterized in that one of the two force-engaging elements (28) of the force limiting unit (E) is pivotally connected to a door handle (51) fixed in a housing (23) fixed to a pneumatic actuator drive shaft (22). perpendicular translator unit ₍₂₄₎ shaft, the second element is formed as part of the translation unit ₍₂₄₎ which extends into the housing (23) part of the translation unit _(24). 6. Device according to claim 2 or 3, characterized in that an element of the force limiter unit (U) (8; 15) is formed for opening _(7; 41J axially movably, the other element (9; 16) and the above is displaceable transverse to the displacement. Device according to claim 4 or 5, characterized in that one element (24) of the force limiting unit (E) is pivotable about its axis of rotation and the other element (28) is axially perpendicular to the axis of rotation of the first element (24). 191,517 ν. Device according to Claim 2 or 4 or 5, characterized in that the movement range of one of the two elements (9; 16; 28) in force connection with one another on the other element (8; 24). It is bounded by a runway ^5, such as flattening, slope (13; 29). 9. Device according to claim 3, characterized in that one of the two with each other in a forced connection element of the power limiter unit (U) of one (16) of the movement range of the formed active on this ramp ₍₁₆₎ and another element that is the roller (15) (41 j design). 5 page drawing Published by the National Office of Inventions Responsible for publishing: Zoltán Himer, Head of Department Taken by the Printing Photocopier Factory (878347/09) 89-0010 - Dabas Printing House, Budapest - Dabas Responsible leader: Csaba Bálint director