EP0458824B1 - Road barricade - Google Patents

Abstract

A road barricade (22) can be swivelled upward from its open position parallel to the road surface, in which its U-shaped cross-section overarches the drive mechanism, about a shaft (20) secured to the ground, into barricade position. To this end it has, on the side nearer the ground in the open position, a pair of guide curves (82, 83), or a pair of rectilinear guide ramps (27, 29) along which a pair of feed rollers (36, 38) move, which are mounted on a threaded muff (34) which slides on a drive spindle (30). This drive spindle is guided by means of running wheels (44, 46) on the base plate (14) of the barrier and carries a protective tube (50, 56) which surrounds the spindle (30). In an approximately vertical closed position, the common shaft butt ends of the feed rollers and the running wheels engage in curved grooves (74) in the barricade element; the barricade element is swivelled downward in a controlled manner under its own weight by the co-operation of the guide lines with the feed rollers. At least the free end region of the barricade element can be flexible, and at least the drive region can be heatable.

Description

The invention relates to a driving surface lock, in particular a parking space lock, which is fastened to the driving surface, with a locking element which can be positioned either parallel to the driving surface or in a position protruding therefrom and which can be pivoted about an axis, and which by means of a drive comprising a spindle element, moves parallel to the driving surface and can be swiveled up perpendicular to the locking direction.

A corresponding lock on parking areas is known from DE-U-8 708065. In this case, a threaded bushing is moved along a spindle element fixedly arranged on the running surface, from which a tab articulated to the locking element extends in order to pivot the locking element by moving the sleeve. Swiveling up and down is always forced.

GB-A 2 079 356 shows ramp-shaped elements which are embedded in a roadway and can be partially raised from the roadway, in order, if necessary, to bring about a speed reduction on a roadway provided with the elements if they are raised slightly.

The present invention is based on the problem of developing a driving surface lock of the type described above in such a way that automatic locking or unlocking of the driving surface can be carried out using structurally simple means. It should also be ensured that the risk of injuries, in particular of crushing when pivoting the lock into the non-locking position, is excluded. Furthermore, the drive or The spindle element must also be accessible if, for example, the drive is inoperable in order to be able to carry out maintenance or repair work. Finally, the locking element should begin to be swiveled up with little effort in order to avoid overloading the drive.

The problem is essentially solved according to the invention in that the blocking element has at least one run line or curve facing the driving surface, along which a sliding element which can be displaced by means of the drive can be moved in the direction of the axis in order to pivot the blocking element, the distance of the run line or - curve to the driving surface viewed from the axis of the locking element increases towards its free end.

The curve curve of the run-off line described last follows a geometry that resembles a curve with a minimum in the area of the driving surface. This ensures a uniform pivoting up or lowering of the locking element. The same swivel angle can be swept over in the same time units.

Consequently, structurally simple means provide the possibility of pivoting the locking element upward, a pivoting back being possible due to gravity. However, this swiveling back is not abrupt. Rather, there is an inhibition by the interaction of the drain line or curve and the retracting sliding element. As a result, there is no risk of crushing when the locking element is pivoted down.

The drive preferably actuates the spindle element, such as the ball roller spindle, which is covered by the locking element and is parallel to the driving surface and when the locking element is parallel to it, by means of which a sliding block or roller carriage having the sliding element can be displaced. Discharge rollers, which interact with the discharge line or curve, can emanate from the sliding element in order to pivot the blocking element.

In order to drive the e.g. from small electrical devices such as drills known electric motor to protect, a slip clutch can be provided between the spindle element and the drive itself.

A gear is preferably connected between an electric motor and the spindle or an element having the same effect, in order to be able to set a desired swiveling speed. Furthermore, the motor can be switched off by means of a current limiter, i.e. if the motor draws too much current, the voltage supply is interrupted.

Preferably, two symmetrical drain lines or curves running to the longitudinal axis of the spindle element are provided, which are formed by edges of legs, which in turn are provided with a cladding to form the locking element. The legs themselves are penetrated by the axis of rotation or shaft, so that consequently the cladding can be chosen to be quite thin in terms of material. The cladding can have a U-shape on average.

There is also the possibility to flexibly at least the free end of the locking element by e.g. Form Bourdon tube sections.

The sliding block penetrated by the spindle element is guided by the base plate. For this purpose, the sliding block can be provided with rollers which are guided laterally along or on elevations extending from the base plate.

In order to protect the spindle element such as a ball roller spindle on the one hand and on the other hand to exclude a risk of injury when the spindle is actuated, it is further provided that a protective tube extends from the sliding block and surrounds the free end of the spindle element. In order to protect the spindle element between the sliding block and the drive, a bellows hose is provided which can extend between the sliding block and a bearing which receives the spindle.

Alternatively, the spindle can run within a tube, which in turn is rigidly connected to the sliding element or trolley. In this case, the pipe going beyond the sliding block is not necessary.

Further details, advantages and features of the invention result not only from the claims, the features to be extracted from them - individually and / or in combination - but also from the following description of an embodiment shown in the drawing.

Fig. 1

eine Schnittdarstellung durch eine auf einer Fahrfläche angeordnete Sperre,

Fig. 2

eine Schnittdarstellung entlang der Linie A-A in Fig. 1,

Fig. 3

eine Schnittdarstellung entlang der Linie B-B in Fig. 1,

Fig. 4

einen Ausschnitt einer weiteren Ausführungsform einer Sperre,

Fig. 5

der Auschnitt nach Fig. 4 in Draufsicht.

Fig. 6

einen Ausschnitt aus der Verkleidung einer Sperre,

Fig. 7

eine Seitenansicht einer besonders hervorzuhebenden Ausführungsform einer Sperre, teilweise weggebrochen,

Fig. 8

eine Draufsicht der Sperre nach Fig. 7, teilweise weggebrochen,

Fig. 9

eine Schnittdarstellung entlang der Linie A-A in Fig. 7 und

Fig. 10

eine Schnittdarstellung entlang der Linie B-B in Fig. 7.

Show it:

Fig. 1

2 shows a sectional view through a lock arranged on a driving surface,

Fig. 2

2 shows a sectional illustration along the line AA in FIG. 1,

Fig. 3

2 shows a sectional illustration along the line BB in FIG. 1,

Fig. 4

a section of a further embodiment of a lock,

Fig. 5

the section of FIG. 4 in plan view.

Fig. 6

a section of the cladding of a lock,

Fig. 7

2 shows a side view of a particularly noteworthy embodiment of a lock, partially broken away,

Fig. 8

7 shows a top view of the lock according to FIG. 7, partially broken away,

Fig. 9

a sectional view taken along line AA in Fig. 7 and

Fig. 10

7 shows a sectional illustration along the line BB in FIG. 7.

In Fig. 1, a lock (10) according to the invention is shown, which is attached directly to a driving surface such as parking space (12) in order to lock or release it to the desired extent. The lock (10) has a base plate (14) which e.g. is connected to the driving surface by screws. Cheeks (16) and (18) extend from the base plate (14) and are penetrated by a shaft (20) about which a locking element (22) such as a post or bollard can be pivoted.

The locking element (22) comprises a panel (24) which is preferably U-shaped in section and open towards the parking area (12). Legs (26) and (28) extending perpendicular to the base plate (14) extend from the inner surface, preferably from the inner surface running parallel to the parking surface (12), which in turn passes through and around the shaft (20) are pivotable. The legs (26) and (28) can also be part of a U-element which is open towards the base plate (14) and which starts from the cladding (24).

The legs (26) and (28) each have a ramp-shaped drain line (27) and (29), via which the element (22) is pivoted in the manner described below.

A ball roller spindle (30) runs parallel to the base plate (14) and centrally between the cheeks and legs (16) and (18) or (26) and (28), which is supported on the one hand by a bearing (32) and on the other receives a sliding block (34). The sliding block (34) is thus axially displaced by rotating the spindle (30).

As a result, since the sliding block (34) has run-off rollers (36) and (38) which interact with the run-off lines which are formed by the lower edges (40) and (42) of the legs (26) and (28), can the locking element (22) is raised by moving the sliding block (34) in the direction of the shaft (20). For this purpose, the ball roller spindle (30) is connected to an electric motor (46) via a slip clutch (44) can have a type as is known from small electrical tools such as drills. The drive can be remotely controlled, activated by switches or the like.

In the protruding position, the locking element (22) preferably has a slight inclination in order to ensure that it is pivoted down when the sliding block (34) moves back due to gravity. However, it is ensured that an abrupt falling, which harbors the risk of bruising, does not occur, since, according to the distance of the sliding block (34) from the shaft (20) through interaction of the drain lines (27) and (29) with the drain rollers (36) and (38) only a gradual swing back is possible.

In order to guide the sliding block to the required extent, it has running wheels (44) and (46) which are guided laterally by an elevation (48) starting from the base plate (14).

The front free end of the spindle (30) is surrounded by a protective tube (50) which starts from the sliding block (34). The area between the bearing (32) and the sliding block (34) can in turn be surrounded by a bellows hose, not shown.

The lining (24) is cuboid and open towards the base plate (14). A support element (54) is provided in the front beveled end region (52) and can be placed on the base plate (14).

It is also possible to flexibly design at least the free end of the locking element (22) in order to avoid damage to a motor vehicle if the lock (10) should be run over in the locking position.

4 and 5 show preferred developments of a lock, which in principle has a structure and a function like the lock (10).

However, the exemplary embodiments of FIGS. 4 and 5 differ from those of FIGS. 1 to 3 and others. in that the sliding element, which can also be referred to as a trolley (34), is fixedly connected to a receptacle such as a tube (56), in which or in which the ball roller spindle, not shown, is rotatably arranged. As a result, the tube (56) more or less surrounds the ball roller spindle, depending on whether the sliding element (34) is in the region of the pivot axis (20), i.e. when the locking element is raised, or in the retracted position in which the locking element is open the bottom plate (14).

As FIGS. 4 and 5 further illustrate, an electric motor (58) is pivotably attached to a shaft (62) via a gear (60), which in turn starts from a receptacle (64) which is attached to the base plate (14) .

The motor (58) can be a 24 volt motor that has a current limiter. This eliminates the need for a slip clutch. If an impermissible force acts on the locking element, the motor (58) would draw an impermissible amount of current. In this case, the current limiter causes the supply voltage to the electric motor (58) to be interrupted.

In order to be able to operate the lock even in the cold season, in particular when there is frost, heating elements in the form of foil heaters (66), (68) are provided in the area of the motor (58) and the transmission (60), which are controlled by a thermostat can.

Regarding the sliding block or trolley (34), it should also be noted that the running wheels (44) and (46) are guided on rail-shaped elevations (96) and (98). The drain wheels (36) and (38) interacting with the drain lines (27) and (29) are arranged on the outside.

The shaft passing through the run-off rollers (36) and (38) and impellers (44) and (46) has outwardly projecting shaft ends (70) and (72), which engage in groove curves (74) which preferably run in the side cheeks (16) and (18) of the lining (24). This engagement of the shaft ends (72) and (70) in the groove curves (74) takes place shortly before the bollard is pivoted into the vertical position. When the trolley (34) moves back, the bollard is consequently pulled along, but the shaft journals (70) and (72) come into engagement with the groove curves (74), that is to say the bollard can move freely again if the gravitational force acting thereon is sufficient, to allow the bollard to swing back automatically. These measures ensure that the risk of crushing excluded by the lock according to the invention is not possible even if the bollard is moved into a vertical position.

7 to 10 are illustrations of a particularly noteworthy embodiment of a lock (80), the same reference numerals being used for elements which have been described in connection with FIGS. 1 to 6. It can also be seen from the sectional representations that essential elements of the embodiments of FIGS. 4 to 6 are realized with the lock (80).

The main difference between the lock (80) and the lock (10) is the formation of the flow curves interacting with the flow rollers, which is partially dashed in FIG. 7 and provided with the reference symbol (82).

When viewed from the axis (20), the flow curve (82) initially rises continuously in the direction of the base plate (14) (section 84), in order then to follow sections of a plateau (86) which, when the locking element (22) is lowered, parallel to the base plate (14) runs. The flow curve (82) then drops continuously, ie the distance to the base plate (14) increases. This is illustrated by the partially solid line (88). A section (90) which runs horizontally when the locking element (82) is lowered can be ascertained in the end region Beginning interacts with the drain roller (36), so if the locking element (22) is to be raised.

This course of the flow curve (82) ensures that the same pivoting angles are swept by the locking element (22) in the same time units, so that the locking element (22) is raised and lowered evenly.

7 that the groove curve (74) extends in sections approximately parallel to the curve section (84) of the trajectory curve (82).

The sectional representations of FIGS. 9 and 10 also show that the drain lines or curves (82), (83) are legs of a U which is open towards the base plate (14) and which is fastened to the inner surface of the lining (24) is.

As illustrated in the sectional view in FIG. 10, the side wall of the locking element (22) is reinforced in the area in which the shaft ends (70) and (72) interact with the groove curves (74).

The cladding (24) itself can, if necessary, be broken away by predetermined breaking points, which are not described in more detail, without the mechanical drive itself being damaged. Such a measure may be necessary if e.g. the locking element cannot be pivoted back for any reason, but the locked area must be fully accessible.

7 it should also be mentioned that the area of the drive is covered with a U-shaped element (92) which starts from the sliding block or trolley (34). This protective element (92) is in turn covered by a stationary protective element (94) which starts from the holder for the drive. These measures also ensure that the area of the drive is not freely accessible, so that a high level of security is guaranteed.

Claims (13)

1. A road barricade (10), in particular a car park barricade, that is fastened to the road surface (12) and that has a barricade element optionally positionable parallel to said road surface or in a position at an angle thereto, said barricade element (22) being swivellable upwards about an axis (20) parallel to said road surface and vertical to the blocking direction by means of a drive mechanism (46, 58) comprising a spindle element (30),
   wherein
   said barricade element (22) has at least one feed line/curve (27, 29, 82, 83) facing said roadway surface (12) and along which an adjustable sliding element (36, 38) is movable for swivelling said barricade element, the distance between said feed line/curve (27, 29, 82, 83) and said roadway surface (12) increasing towards its free end, seen from the rotary axis (20) of said barricade element (22).
2. A road barricade according to Claim 1,
   wherein
   said feed line (27, 29) is of ramp shape.
3. A road barricade according to Claim 1,
   wherein
   said feed curve (82, 83) initially rises, seen from the rotary axis (20) of said barricade element (22), in the direction of said roadway surface (12), follows a plateau (86), and then moves away from the roadway surface, with the path of said feed curve (82) being such that equal swivel angles can be covered in equal units of time by said barricade element.
4. A road barricade according to Claim 1,
   wherein
   two feed lines/curves (27, 29, 82, 83) symmetrical to the longitudinal axis of said spindle element (30) are provided that are formed by the edges (40, 42) of flanges (26, 28) which in their turn are preferably provided with a preferably U-shaped cladding (24) as part of said barricade element (22) or which extend from said barricade element (22) or which themselves form said barricade element (22) and extend swivellably from said shaft (20).
5. A road barricade according to Claim 1,
   wherein
   said barricade element (22) attachable with said drive mechanism (46, 58) to said roadway surface (12) is swivellable substantially under gravity from the position projecting from said roadway surface to the position parallel to said roadway surface.
6. A road barricade according to at least one of the previous Claims,
   wherein
   said drive mechanism (46) operates the spindle element such as a recirculating ball screw (30) that is parallel to said road surface and covered by said barricade element when the latter is parallel to said road surface, by means of which element a sliding block (34) containing the sliding element (36, 38) is movable.
7. A road barricade according to at least one of the previous Claims,
   wherein
   a slipping clutch (44) is disposed between said drive mechanism (46) and said spindle element (30).
8. A road barricade according to at least one of the previous Claims,
   wherein
   at least the free end of said barricade element is designed flexible.
9. A road barricade according to at least Claim 5,
   wherein
   said sliding block (34) runs in controlled manner in a base plate (14) forming the base of said road barricade and attachable to said roadway surface (12).
10. A road barricade according to at least Claim 9,
    wherein
    said sliding block (34) has running wheels (44, 46) that run laterally along a raised section (48) extending from the base plate (14).
11. A road barricade according to at least one of the previous Claims,
    wherein
    the free end of said spindle element (30) is surrounded by a protective tube (50) extending from said sliding block (34).
12. A road barricade according to at least one of the previous Claims,
    wherein
    said running wheels (44, 46) and feed rollers (36, 38) interacting with said feed lines (27, 29) of said sliding block (34) extend from a common shaft having butt ends (70, 72) on the outside that interact with curved grooves (74) provided in the cladding or walls of said barricade element (22) when the latter is in an approximately vertical position such that said barricade element lowerable under gravity also moves the shaft ends of said barricade element from a substantially vertical position when said sliding element is moved back.
13. A road barricade according to at least one of the previous Claims,
    wherein
    at least in the area of said drive mechanism (46, 58) a heater is provided such as a foil heater (66, 68) disposed on said base plate (14).

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