DE102011003655A1 - Locking system for table tennis table, has actuation device, which has connecting rod with handle, which is arranged in its longitudinal expansion from outer edge region to inner edge region of table half - Google Patents

Abstract

The locking system has an actuation device (5), which has a connecting rod (5.1) with a handle (5.2), which is arranged in its longitudinal expansion from an outer edge region (1.1.1) to an inner edge region (1.1.2) of the table half (1.1) at a certain distance (a) to the table half. The connecting rod is connected with a crank shaft (6) over a crank disk (6.1). The crank shaft is connected with a guide component (4) such that the guide component is locked and unlocked by the rotation of the crank shaft.

Description

The invention relates to a locking system for a table tennis table with two plate halves, wherein at least one of the plate halves between a horizontal end position for playing and a vertical end position for storage is hinged, in which the plate half in the region of its in the vertical end position of a base end facing with at least one Guide member is hingedly connected, which is arranged on each one substantially vertical, arranged on the base guide rail slidably, wherein the position of the guide member in both positions via an actuating device can be blocked and unlocked.

Various devices for locking folding table tennis tables are known in the prior art.

To FR-PS 27 29 302 a device for folding table tennis is known, the table tennis tables are provided with pins which are guided in grooves of side parts of a frame.

A disadvantage of this device is that in order to secure the table tennis in folded, vertical position (transport position) or in the unfolded horizontal position (play position) each separate mechanisms are required, the operation for locking and unlocking is cumbersome.

It is also after DE 10 2006 013 361 A1 a device for pivoting the plate halves of table tennis tables from a horizontal playing position in an approximately vertical rest or transport position and vice versa with arranged under the plate halves and hingedly connected with them pivoting levers for automatically setting up the legs when pivoting the plate halves known, one automatically effective, deactivatable locking device for fixing the pivotable plate halves is present.

From the DE 699 09 725 T2 For example, there is known a collapsible table tennis table having means for locking the two panels, ie means allowing the locking of each panel in the desired position when in the horizontal play position, the locking means having to be actuated move the plate from this horizontal position to the vertical transport position.

Usually, two independent mechanisms for unlocking are arranged to increase the security against unintentional folding down of locked table tennis tables from their transport position.

To WO 01/89346 A1 discloses a system for opening ping-pong tables, wherein on the table tennis slidable rods are arranged, which are inserted into recesses of a frame for locking and pulled out by means of a respective cable from the recesses. At the ends of the ropes rings are arranged, where is pulled to unlock.

The disadvantage is, inter alia, that this system is only available for locking in transport position and unlocking from the transport position available, the table tennis tables in play position but separately locked and unlocked must be.

Above all, when unlocking from the transport position disadvantageous that for each of the two simultaneously operated ropes each hand is required and thus at least for a short time, the down to be folded table tennis table can not be manually held and secured when operated by a single person.

From the DE 10 2005 001 062 A1 an arrangement for locking a table tennis game with two plate halves is known, wherein at least one plate half between a horizontal end position for playing in a vertical end position for storage is hinged by the plate half is connected in the region of its one end facing the base with a guide member which on a is arranged in a substantially vertical, arranged on the base guide rail slidably, wherein the position of the guide member is lockable in its two end positions. It is provided that at least one immovably connected to the guide member pin is latched in both end positions of the plate half in an opening of the guide rail.

The invention has for its object to provide an improved locking system of the type mentioned, which allows the table tennis table both in the game position and in the transport position to lock automatically and safely and to release both locks comfortably when operated.

According to the invention the object is achieved with a locking system, which contains the features specified in claim 1.

Advantageous embodiments are specified in the subclaims.

In a table tennis plate locking system having two plate halves, at least one of the plate halves being hinged between a horizontal end position for play and a vertical end position for storage in which the plate half articulates with at least one guide part in the region of its end facing the subframe in the vertical end position is connected, which is arranged on a respective substantially vertical, arranged on the base guide rail slidably, the position of the guide member in both end positions can be blocked and unlocked via an arranged on an underside of a plate half actuator.

According to the invention it is provided that the actuating device comprises a connecting rod with a handle which is arranged in its longitudinal extent from an outer edge region to an inner edge region of the plate half at a certain distance to the plate half, wherein the connecting rod via at least one crank arm, preferably over two parallel mutually arranged crank arms, is movably connected to a crankshaft, which converts a linear movement of the connecting rod in the direction of an outer edge region of the plate half via the crank arm in a rotational movement of the crankshaft. The crankshaft is connected to the guide member such that by rotation of the crankshaft, the guide member is lockable and unlocked.

By means of the locking system according to the invention, it is possible in a particularly preferred manner to operate the actuator with only one hand so as to conveniently release the lock in both end positions. The other hand is thus free to fold the plate half in the other end position. In addition, the handle allows optimal power transmission to the connecting rod, so that a risk of damaging it during operation is minimized.

To avoid folding down of the connecting rod, at least one longitudinal guide for receiving the connecting rod is preferably arranged in the vicinity of an outer edge region of the plate half.

In an alternative embodiment of the locking system, the connecting rod is designed as a crank loop, wherein in the vicinity of the outer edge region of the plate half is arranged at this at least one longitudinal guide and in the vicinity of an inner edge region of the plate half at this at least one further longitudinal guide respectively for receiving the crank loop , By means of the further longitudinal guide a change in the distance of the crank loop is avoided to the plate half, which in particular the robustness of the actuator is increased.

The connecting rod defines in its vertical longitudinal orientation a longitudinal axis. In this case, an angle between an axis which runs parallel to the longitudinal axis of the connecting rod and thereby intersects an axis of rotation of the crankshaft, and the at least one crank arm in the first end position is greater than 90 degrees to the axis. By rotation of the crankshaft, the at least one crank arm is pivoted about the axis of rotation of the crankshaft, so that a position of the handle along the vertical axis is variable and the distance of the connecting rod to the plate half changed.

Preferably, the position of the handle changes such that it is visible in the second end position in the viewing direction on the underside of the plate half, wherein the handle is located below the outer edge region or peripherally terminates therewith. Ie. the handle does not protrude into play position beyond the outer edge region of the plate half. The handle is thus visible in viewing direction, but without being bothersome for a player in the game mode.

When the plate half is pivoted from one end position to the other end position, the crankshaft is fixed relative to the underframe, so that the position of the guide part during the sliding movement of the guide part is preferably not changed, so that a frictionless sliding of the guide part along the guide rail is possible.

The crankshaft is in each case in the vicinity of a pivot point at which the crankshaft is fixedly connected to the guide member, connected via a further crank arm with a pin arranged in the guide part, which in two end positions of the plate half in an opening of the guide rail latched, in particular automatically latched, is and thus locks the guide member in both end positions.

For automatic and secure locking of the table tennis table, the pin of the guide element is preferably subjected to a bias against the guide rail. In this way, the pin automatically engages in the opening when the guide member slides along the guide rail along the opening. In particular, an elastic element, such as, for example, a tension spring, can be provided for acting on the pretension.

To solve the lock by means of the actuator again, that is Guide member arranged in an advantageous manner pivotally mounted on the guide rail. This makes it possible to swing the pin out of the opening again. As a result, the guide member can slide on the guide rail until a position is reached in which the pin reaches another opening, for example, when a disk half has reached the horizontal end position for playing or the vertical end position for storage. For this purpose, the guide member is pivotally connected to a plate half in a particularly advantageous manner.

In a preferred embodiment, the pin has two areas that can be latched at different depths into the opening of the guide rail, wherein the opening is so large that only a partial engagement still a slight sliding movement of the guide member along the guide rail is possible. This is particularly advantageous for setting up the table tennis game on uneven terrain, because in this case a level can be achieved, which allows safe handling of the table tennis table and thereby prevents folding back of the plate halves.

The same effect can be achieved if the pin has two lugs, which can be latched into an opening of the guide rail, wherein one of the openings in the guided direction of movement of the guide member is greater than the corresponding approach.

Embodiments of the invention are explained in more detail below with reference to drawings.

Show:

1A 1 is a perspective view of a table tennis table in a first end position with a guide part in the locked state;

1B schematically a perspective view of the table tennis plate according to 1A in the first end position with the guide part in the unlocked state,

2A FIG. 2 schematically shows a perspective view of a table tennis table in a second end position with the guide part in the locked state, FIG.

2 B schematically a perspective view of the table tennis plate according to 2A in the second end position with the guide part in the unlocked state,

3 schematically a perspective view of a table tennis table with an actuator in an alternative embodiment and

4 schematically sectional views through a guide member in three different states.

Corresponding parts are provided in all figures with the same reference numerals.

1A schematically shows a table tennis table 1 with a plate half 1.1 , wherein in particular a bottom of the plate half is shown. The plate half 1.1 , is in a first end position, in particular a vertical end position for storage.

The table tennis table 1 is advantageously on both sides of at least one base 2 , preferably from two bases 2 with roles 2.1 , carried. By means of the rollers 2.1 is a moving of the table tennis table 1 possible without having to raise them.

On the bases 2 are each two guide rails 3 arranged, which in turn are connected to each other via a transverse strut.

The shown guide rails 3 are preferably formed in the form of a tubular profile. Alternatively, also versions with, for example, a U, C-. T, double T or flat profiles possible.

On the guide rails 3 is each a guide part 4 guided smoothly. One of the leadership parts 4 is in 4 shown in more detail and in several states A, B, C, wherein the state of the guide parts 4 in the present embodiment corresponds to a locked state according to the state C, in which the guide parts 4 can not perform any sliding movement and thus the with the guide parts 4 connected plate half 1.1 the table tennis table 1 can not be moved out of the first end position.

As in particular from the 4 becomes clear comprises a guide part 4 one housing each 4.1 with a pivot point 4.2 on which the plate half 1.1 the table tennis table 1 is arranged articulated so that these from the first end position to a second end position, as in the 2A and 2 B shown is foldable.

To the plate half 1.1 to bring in said second end position is an actuator 5 provided by means of the locking of the plate half 1.1 safe and easy to solve.

The actuating device 5 includes a connecting rod 5.1 with a handle 5.2 , which frontally towards an outer edge region 1.1.1 at the connecting rod 5.1 attached, for example, with this screwed.

The connecting rod 5.1 defines with its longitudinal orientation a longitudinal axis v and extends at a certain distance a to the plate half 1.1 vertically from an inner edge area 1.1.2 to the outer edge area 1.1.1 the plate half 1.1 , where the connecting rod 5.1 not over an entire length L of the plate half 1.1 extends and the handle 5.2 in viewing direction below the outer edge area 1.1.1 located.

To fold down the connecting rod 5.1 to prevent is near the handle 5.2 a longitudinal guide 5.3 at the bottom of the plate half 1.1 fixed, which the connecting rod 5.1 receives.

The connecting rod 5.1 is preferably formed of a metal or a corresponding metal alloy. The handle 5.2 is particularly preferably an ergonomically shaped plastic handle, which is easily accessible with one hand.

The connecting rod 5.1 is at its front end towards the inner edge area 1.1.2 via two mutually parallel crank arms 6.1 with a crankshaft 6 connected, which advantageously a linear movement of the connecting rod 5.1 , z. B. a movement of the connecting rod 5.1 in the direction of the outer edge area 1.1.1 , in a rotational movement about a rotation axis r converts.

The crank arms 6.1 are doing so on the crankshaft 6 arranged that an angle α between an axis x, parallel to the longitudinal axis v of the connecting rod 5.1 runs while the axis of rotation r of the crankshaft cuts, is greater than 90 degrees.

The crankshaft 6 extends over an entire width B of the plate half 1.1 and is on both sides at a point of articulation 4.2 with the housing 4.1 of the leadership part 4 firmly connected. In addition, the crankshaft points 6 one more crank arm near their front ends 6.2 on, by means of which the crankshaft 6 articulated in each case with one in the guide part 4 arranged cones 4.3 connected, which in the present embodiment in an in 4 opening shown in detail 3.1 the guide rail 3 engaged and thus the plate half 1.1 is locked.

The other crank arms 6.2 are in terms of the angle α in the same manner as the crank arms 6.1 on the crankshaft 6 arranged.

In order to release the lock, the connecting rod must 5.1 in the direction of the outer edge area 1.1.1 by pulling the handle 5.2 to be moved in what 1B shown with an arrow. The force on the handle 5.2 acts optimally on the connecting rod 5.1 transferred without damaging it. In addition, the actuator is 5 to operate with just one hand, leaving the other free hand to pivot the plate half 1.1 can be used.

The movement of the connecting rod 5.1 causes a pivoting of the crank arms 6.1 about the rotation axis r counterclockwise, so that the angle α is smaller, which has the consequence that the crankshaft 6 performs a rotational movement about its axis of rotation r in the counterclockwise direction. In addition, by pulling the connecting rod 5.1 the distance a of the connecting rod 5.1 to the plate half 1.1.1 opposite the distance a, the connecting rod 5.1 to the plate half 1.1 in the first locked end position, smaller.

Furthermore, the other crank arms 6.2 each about the axis of rotation r of the crankshaft 6 pivoted counterclockwise, which causes the respective pin 4.3 out of the opening 3.1 the guide rail 3 is pivoted out and the guide parts 4 are then in state B.

By further moving the connecting rod 5.1 in the direction of the outer edge area 1.1.1 until reaching an anchor point, the guide parts 4 each guided in the state A, in which a simultaneous, sliding movement of the guide parts 4 in viewing direction upward is possible.

By sliding the respective guide part 4 up is the plate half 1.1 from its current first end position to the second end position movable, wherein the crankshaft 6 in relation to the base frame 2 during the sliding movement of the guide parts 4 performs no rotational movement, so that the current state of the guide parts 4 not changed.

The guide parts 4 while sliding along the guide rail 3 until the cones 4.3 each in a further opening, not shown 3.1 the guide rail 3 click into place audibly and palpably. The pins snap 4.3 in each case in two stages in the further opening 3.1 the guide rail 3 one. In the first stage is the guide part 4 in the state B, in which a movement along a short distance is still possible until the pin 4.3 completely in the opening 3.1 engages and the guide member 4 is in state C.

By snapping the pins 4.3 in the first stage and thus at the transition of the guide parts 4 from state A to state B, the other crank arms 6.2 automatically pivoted clockwise around the rotation axis r, leaving the crankshaft 6 makes a clockwise rotation. As a result, the crank arms pivot 6.1 clockwise about the rotation axis r, whereby the connecting rod automatically moves towards the inner edge area 1.1.2 the plate half 1.1 moved, however, so that the handle 5.2 in the second end position visible in the viewing direction below the outer edge region 1.1.1 located. Alternatively, the handle closes 5.2 at the edge with the outer edge area 1.1.1 the plate half 1.1 from.

The distance a of the connecting rod 5.1 to the plate half 1.1 is doing with respect to the distance a of the connecting rod 5.1 this to the plate half 1.1 while pulling the connecting rod 5.1 in the direction of the outer edge area 1.1.1 owns, bigger.

2A shows the plate half 1.1 in the second end position, which in particular represents a horizontal position for playing.

The respective management part 4 is in this embodiment in the state C, in which the guide parts 4 can not perform a sliding movement. This is especially for setting up the table tennis table 1 in uneven terrain advantageous because in this case a state can be achieved, the safe handling of the actuator 5 allows while folding back the plate half 1.1 prevented.

The angle α is smaller than 90 degrees in the second end position.

In order to release the lock in the second end position, the connecting rod must 5.1 analogous to the solution of the locking in the first end position in the direction of the outer edge region 1.1.1 by pulling the handle 5.2 to be moved in what 2 B is shown by an arrow. In this case, the distance a of the connecting rod 5.1 to the plate half 1.1 opposite the distance a, the connecting rod 5.1 to the plate half 1.1 in the locked second end position, smaller.

The respective management part 4 in this embodiment is in state B and is by further moving the connecting rod 5.1 in the direction of the outer edge area 1.1.1 the plate half 1.1 in the state A transferred.

This movement leads to a pivoting of the crank arms 6.1 about the rotation axis r counterclockwise, wherein the angle α is smaller. Then the crankshaft rotates 6 about the rotation axis r counterclockwise, which has the consequence that the other crank arms 6.1 about the rotation axis r counterclockwise and thus the pins 4.3 of the respective management part 4 out of the opening 3.1 be panned out. This is a sliding movement of the guide parts 4 in viewing direction down possible, bringing the plate half 1.1 from the second end position in the first end position is movable out.

3 shows in perspective a plate half 1.1 a table tennis table 1 with an actuating device 5 in an alternative embodiment.

The connecting rod 5.1 is as a crank loop ( 5.1 ') executed, in which a further longitudinal guide 5.3 in the direction of the inner edge area 1.1.2 the plate half 1.2 is arranged at this, which the crank loop 5.1 'takes up.

By means of the further longitudinal guide 5.3 it is avoided that a distance a 'of the crank loop 5.1 'to the plate half 1.1 during locking and unlocking changes, which is preferably the robustness of the actuating device 5 elevated.

In 4 is schematically a guide part 4 in the states A, B and C are shown in sectional views.

In the position shown in state A, the guide part 4 on the guide rail 3 slide up or down. The guide part 4 is provided with an approach in which a compression spring 4.4 as well as a pressure piece 4.5 are located. The compression spring 4.4 pushes the pressure piece 4.5 against a pipe wall of the guide rail 3 , If the guide part 4 reaches the state B, the pin is 4.3 through that of the compression spring 4.4 moving pressure piece 4.5 so far into the opening 3.1 pressed until a pin neck 4.3.1 in the opening 3.1 slips. This movement is limited by the fact that the contact surface 4.3.2 of the pin 4.3 on the outer surface of the guide rail 3 is applied. In this state, the guide part 4 can not be moved back, while it can still be moved by a small amount - here, for example, upward - until the state C is reached.

In state C is the pin 4.3 completely in the opening 3.1 the guide rail 3 engaged. The length of the opening 3.1 corresponds to the length of the pin 4.3 , so that the translational movement of the guide part 4 is locked in both directions.

Alternatively, it is also possible that the guide rail with two openings 3.1 Mistake, one of the openings 3.1 is designed as a vertical slot and the other of the openings 3.1 forms a horizontal slot. The entire management part 4 is made of one piece. The guide part 4 is along the pin 4.3 with one through the compression spring 4.4 generated pressure force against the guide rail 3 pressed. The engagement of the pin 4.3 in the guide rail 3 is also possible in two states here. In a first latching a narrow pin neck snaps into the vertical opening 3.1 , while still a short upward movement is possible, and that far, until the pin approach 4.3.1 in the horizontal opening 3.1 locks. The horizontal opening 3.1 corresponds to the wide pin approach 4.3.1 , so after snapping this journal approach 4.3.1 a further shift of the guide part 4 is prevented. The plate half to be swiveled 1.1 the table tennis table 1 is again at the point of articulation 4.2 with the guide part 4 articulated.

LIST OF REFERENCE NUMBERS

1

table tennis table

1.1

table half

1.1.1

outer edge area

1.1.2

inner border area

2

undercarriage

2.1

roll

3

guide rails

3.1

openings

4

guide part

4.1

casing

4.2

articulation

4.3

spigot

4.3.1

Zapf approach

4.3.2

contact surface

4.4

compression spring

4.5

Pressure piece

5

actuator

5.1

connecting rod

5.1 '

A crank slide

5.2

handle

5.3

longitudinal guides

6

crankshaft

6.1, 6.2

crank arms

B

width

L

length

a, a '

distance

r

axis of rotation

v

longitudinal axis

x

axis

α

angle

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• FR 2729302 [0003]
• DE 102006013361 A1 [0005]
• DE 69909725 T2 [0006]
• WO 01/89346 A1 [0008]
• DE 102005001062 A1 [0011]

Claims (11)

Locking system for a table tennis table ( 1 ) with two plate halves ( 1.1 ), wherein at least one of the plate halves ( 1.1 ) between a horizontal end position for playing and a vertical end position for storage is foldable, in which the plate half ( 1.1 ) in the region of its in the vertical end position a subframe ( 2 ) facing end with at least one guide part ( 4 ) is hinged, which in each case a substantially vertical, on the subframe ( 2 ) arranged guide rail ( 3 ) is slidably disposed, wherein the position of the guide part ( 4 Lockable in both end positions and one on an underside of a plate half ( 1.1 ) arranged actuating device ( 5 ) is unlockable, characterized in that the actuating device ( 5 ) a connecting rod ( 5.1 ) with a handle ( 5.2 ), which in their longitudinal extent from an outer edge region ( 1.1.2 ) to an inner edge area ( 1.1.1 ) of the plate half ( 1.1 ) at a certain distance (a) to the plate half ( 1.1 ), wherein the connecting rod ( 5.1 ) via at least one crank arm ( 6.1 ) with a crankshaft ( 6 ) and the crankshaft ( 6 ) with the guide part ( 4 ) is connected such that by rotation of the crankshaft ( 6 ) the management part ( 4 ) can be blocked and unlocked. Locking system according to claim 1, characterized in that in the vicinity of an outer edge region ( 1.1.1 ) of the plate half ( 1.1 ) on this at least one longitudinal tour ( 5.3 ) for receiving the connecting rod ( 5.1 ) is arranged. Locking system according to claim 1, characterized in that the connecting rod ( 5.1 ) as a crank loop ( 5.1 ') is formed, wherein in the vicinity of the outer edge region ( 1.1.1 ) of the plate half ( 1.1 ) at this at least one longitudinal guide ( 5.3 ) and near an inner edge region ( 1.1.1 ) of the plate half ( 1.1 ) at this at least one further longitudinal guide ( 5.3 ) each for receiving the crank loop ( 5.1 ') is arranged. Locking system according to one of the preceding claims, characterized in that the connecting rod ( 5.1 ) defines in its vertical longitudinal alignment a longitudinal axis (v) and in that an angle (α) between an axis (x) parallel to the longitudinal axis (x), which thereby an axis of rotation (r) of the crankshaft ( 6 ) and the at least one crank arm ( 6.1 ) in the first end position is greater than 90 degrees to the axis (x), so that by rotation of the crankshaft ( 6 ) a position of the handle ( 5.2 ) is variable along the vertical axis (v). Locking system according to claim 4, characterized in that the position of the handle ( 5.2 ) by rotation of the crankshaft ( 6 ) such that it is visible in the second end position in the viewing direction on the underside of the plate half ( 1.1 ), wherein the handle ( 5.2 ) below the outer edge area ( 1.1.1 ) or peripherally terminates with this. Locking system according to one of the preceding claims, characterized in that when pivoting the plate halves ( 1.1 ) the crankshaft ( 6 ) in relation to the underframe ( 2 ) is established. Locking system according to one of the preceding claims, characterized in that the crankshaft ( 6 ) in each case in the vicinity of the articulation point ( 4.2 ) via another crank arm ( 6.2 ) with one in the guide part ( 4 ) arranged pins ( 4.3 ), which in both end positions of the plate half ( 1.1 ) in an opening ( 3.1 ) of the guide rail ( 3 ) is latched. Locking system according to one of the preceding claims, characterized in that the guide part ( 4 ) with a bias against the guide rail ( 3 ) and is movable against this bias. Locking system according to claim 8, characterized in that for generating the prestressing on a pin ( 4.3 ) opposite part of the guide part ( 4 ) An elastic element is arranged. Locking system according to one of the preceding claims, characterized in that the guide part ( 4 ) on the guide rail ( 3 ) is pivotally mounted and with a plate half ( 1.1 ) is hinged. Locking system according to one of the preceding claims, characterized in that the pin ( 4.3 ) has two areas that are different deep into the opening ( 3.1 ) of the guide rail ( 3 ), wherein the opening ( 3.1 ) is so large that only a partial engagement still a slight movement of the guide part ( 4 ) along the guide rail ( 3 ) is possible.

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