CN101500877B

CN101500877B - Immobilizer for shopping trolleys

Info

Publication number: CN101500877B
Application number: CN200680005453.7A
Authority: CN
Inventors: 霍斯特·松嫩多费尔; 弗朗茨·维特
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-02-18
Filing date: 2006-02-18
Publication date: 2014-01-01
Anticipated expiration: 2026-02-18
Also published as: CN101500877A; UA92338C2; CN101443221A; UA93368C2; ES2369622T3; CN101443221B

Abstract

Disclosed is a principle of alternately activating and deactivating a latching device by a magnetic field. A further developed embodiment of the invention is characterized in that the deactivating magnetic field may be smaller than the activating magnetic field.

Description

Hill holder for shopping cart

Technical field

The present invention relates to a kind of transport trolley with steerable vehicle wheels.

This transport trolley offers client by shopping mall and uses in a zone be allowed to.

Hill holder is for preventing from using the possibility of transport trolley outside this zone.

Prior art

In known hill holder, this hill holder is to start by magnetive attraction.

A magnetic area is positioned near this and is allowed to the ground of zone boundary.While moving past on this magnetic area, magnetive attraction is handled a main start unit, mechanical process of this unit starting, the then described hill holder of the final startup of this mechanical process.

This more weak magnetive attraction causes this main start unit to have the meticulous behavior of a kind of height.

Certainly, this meticulous main start unit is to vibration sensing.Therefore, even disadvantageous possibility is also can by mistake cause the running of the main start unit that this is meticulous in the described vibration that is allowed to occur in the process of this transport trolley of normal running in zone, and so and start this hill holder.The problem that not yet disclosed utility model application DE 202005002714 processes is to reduce the sensivity of this meticulous main start unit to the translation vibrations, the vibrations that occur while such as this shopping cart, encountering obstacle (such as shelf etc.).The center of gravity of the described main start unit in there is selected as it is positioned on S. A., and so simple translation vibrations can not produce any moment of torsion.

The problem that not yet disclosed utility model application DE 202005002713 processes is that this meticulous main start unit has been admitted to be operated while moving past on this magnetic area, but and then so promptly return to its reference position, so that the remainder that finally will start the mechanical process of this hill holder not yet is activated.

These two problems are solved by minute other device, have therefore caused increasing the complexity of parts.

Now also have been found that a large amount of oscillatory types that occur in course of normal operation, the vibration for example, produced while promoting this shopping cart on uneven surface, can cause a kind of resonance, and it causes on the main start unit meticulous at this producing a moment of torsion then.

Also have been found that and be allowed to outside zone so a shopping cart that its hill holder has started is sent back to while being allowed to zone when client will be positioned at, this shopping cart is lifted in a side usually.As a result, the power produced by this magnetic area only acts on this hill holder on a degree reduced.

Disclosure of the present invention

Technical purpose

An object of the present invention is to provide a kind of hill holder, main start unit wherein is designed to it and is not only indivedual vibrations and is all insensitive to multiple oscillatory type, and the feature had in addition is basically to be independent of remainder final this hill holder that starts that these magnetive attractions act on the time period of main start unit mobile on this magnetic area and start reliably this mechanical process.

Another object of the present invention is for removing startup by the Geng Ruo magnetic field, magnetic field than for starting, guarantee that with this being retracted this at the hill holder with having started is allowed to this hill holder on regional transport trolley and is again removed and start reliably, even this shopping cart is to be lifted in a side.

In a general form, this purpose may be defined as the impact that this main start unit is not trembled and vibrates to a great extent, but it is highstrung and the power caused by magnetic worked from outside is reacted reliably, and the power caused by magnetic from external action, relevant with the releasing startup of this hill holder is reacted more sensitively.

Technical solution

It is that main start unit is equipped with reverse inertance element that solution of the present invention provides, and these elements make this start unit to trembling and vibrating insensitive.

In addition, for this start unit has been equipped with a responder, it makes have a mind to starting of this hill holder be independent of when moving past this magnetic area magnetive attraction from the time period of external action.

Causing producing Consideration of the present invention has utilized exciting force and tripping force to be based on this fact of different physical actions in this case.

These exciting forces are produced by the interaction of the quality of all parts with this start unit, and these tripping forces are produced by the interaction of independent parts and magnetive attraction.

These exciting forces act on all parts of this start unit now, and magnetive attraction only acts on parts of this start unit by contrast.

Further Consideration is based on such idea: when a kind of interim application force moves relative to each other two objects, even when this interim application force no longer exists, two objects still keep by the cooperation of a kind of mutual locking or power being connected to each other subsequently.

The cooperation of this mutual locking or power can be by mechanical device or is produced by magnetive attraction equally.

For the purpose part that is related to this hill holder and for the purpose remove started, the Z-TEK worked from outside, caused by magnetic is not reacted sensitively, and the discovery that relevant consideration utilizes therewith is can affect the effect of the magnetive attraction worked from outside at the magnet of this hill holder inside.

Under existing conditions, these considerations have produced the solution limited in claim and dependent claims.

Favourable effect

The random exciting force occurred compensates mutually, and can not make this start unit produce any obvious movement, and the magnetive attraction of having a mind to by contrast produce acts on these parts of start unit clearly, thereby they are intended to be moved and start this hill holder.

The parts that these of this start unit have a mind to move remain fixed on desired position in the time of a restriction, even exactly at this hill holder, no longer be arranged in the zone of magnetive attraction impact.

By way of example, this means likely and move past a magnetic area with different speed, and this startup to this hill holder has no effect.

Therefore, the operation of this hill holder is independent of the time period of the magnetive attraction effect produced intentionally to a great extent.

Once one of the mechanicalness process of this hill holder inside is suitably improved and causes this hill holder to be activated, this start unit just turns back to reference position again.

In this reference position, this main start unit is ready to again start by a magnetive attraction again worked from outside a mechanicalness process of hill holder inside, so this can cause this hill holder to be removed, starts.

This improvement of this hill holder means and can again the hill holder started be removed and start by the same magnetive attraction source that causes startup.

This magnetive attraction source can be optionally to come to determine that this is allowed to the magnetic area of area boundaries, or derives from the Magnetic tools that authorized person (for example supermarket employee) uses.

Once this advantage produced on the one hand is to be allowed within the outer shopping cart with the hill holder started in zone is moved back to through this magnetic area and is allowed to zone, this shopping cart just can allow anyone arbitrarily use and without a doubt again immediately.

On the other hand, an authorized person can use one to be exercisable Magnetic tools without contact, with a kind of favourable easy way place of wanting of what is the need in office, this hill holder is removed and started, thereby it is easier significantly to make to return shopping cart.

Remove startup owing to using than starting more weak magnetic field, this just can advantageously guarantee that being moved back into this hill holder on the transport trolley in being allowed to zone at the hill holder with having started is again removed and start reliably, particularly when this shopping cart in the situation that a side be raised.

Description of drawings 1 illustrates a lateral plan of these hill holder 1 one sides, with the form of part sectional view, illustrates.

Fig. 2 illustrates a lateral plan of these hill holder 1 one sides, with the form of part sectional view, illustrates.

Fig. 3 illustrates the details that relates to this permanent magnet 13.

Fig. 4-6 illustrate the details that relates to ball and groove.

Fig. 7 illustrates hill holder known Fig. 1 from top.

Fig. 8 illustrates a development of the present invention.

Fig. 9-10 illustrate the development of this hill holder in starting state known in Fig. 4.

The specific embodiment

Explain in further detail a possible exemplary of the present invention below with reference to a plurality of accompanying drawings.

Fig. 1 illustrates a lateral plan of these hill holder 1 one sides, with the form of part sectional view, illustrates.

The roller 2 of this hill holder 1 is connected to a shopping cart by steering shaft L, for clear reason, this shopping cart is not shown here.This roller 2 has an actuator 2a, and its function will describe in detail after a while.

A main start unit 3 is provided in this hill holder inside, and it can move under the impact in a magnetic field.

This start unit 3 has one with two throw of lever 4a, the lever 4 of 4b, and it is designed to can be around 5 rotations of a pivot point/axle.

A throw of lever 4a installs with a counterweight 6, and another throw of lever 4b has a block 7 endways.

Block 7 on this arm 4b remains on position of rest by a ball 10.Hereinafter will illustrate in greater detail the definite function of this ball 10.

Another lever 8 is positioned at the back of this throw of lever 4a.One block permanent magnet 9 is positioned at the end of this lever 8.This lever 8 is installed to be it can be rotated around an axle 5a, and this can't see on this schematic diagram, and is connected to this throw of lever 4a by a tooth system, and this can't see too.

Tooth system between this lever 8 and throw of lever 4a and on the one hand counterweight 6 quality and on the other hand the quality of permanent magnet 9 impact of rotary acceleration and translational acceleration is had to a kind of compensating action.The momentum of the lever around this axle 54 occurred when acceleration/accel is compensated by the momentum of the lever 8 around axle 5a to a great extent.Therefore, can prevent the mobile unintentionally of this start unit 3.

This counterweight 6 is to consist of a kind of material that attracted by permanent magnet 9.

The attractive force of 9 pairs of counterweights 6 of this permanent magnet has another effect to start unit, i.e. decay is disturbed, because 9 pairs of counterweights of permanent magnet 6 produce attractive force.

In this tractive force minimizing road area, metal parts may affect.Directly approach and mean that these magnetive attractions preferably work between these two parts between this counterweight 6 and permanent magnet 9.

In the situation that this counterweight 6 not, this just separately likely makes permanent magnet 9 carry out a movement, as the result of the attractive force between it and a metal parts on track, so this can cause starting unintentionally hill holder.Such a metal parts for example, is a maintenance well lid.

Fig. 2 illustrates start unit 3 and has moved on the magnet 11 that subsurface installs.

The polarity of this magnet 11 is arranged to and makes between this magnet 11 and permanent magnet 9 to produce a repulsive force.This magnet 11 can be a permanent magnet or electromagnet.

It is enough strong that repulsive force between this permanent magnet 9 and magnet 11 is wanted, to overcome the attractive force between above-mentioned counterweight 6 and magnet 9.

These repulsive forces between this permanent magnet 9 and magnet 11 cause lever 8, around axle 5a, some rotations are arranged counter clockwise.

This rotation of this lever 8 causes the opposite spin of this lever 4 (with throw of

lever

4a and 4b) around axle 5 by tooth system, thereby causes block 7 to be opened by pivotable, and discharges ball 10.

The rotation of this lever 4 causes throw of lever 4a to arrive a holding element, and this element is fixed on this throw of lever 4a on this pivot position and therefore and also whole start unit is fixed on the enable position of a restriction.

The holding element of fixing this throw of lever 4a can be designed to multiple different form.

It can be based on friction force or a kind of interlocking, a for example inclined-plane, or a kind of velcro type.

Also may utilize the following fact: as mentioned above, this counterweight 6 is to consist of a kind of material that is subject to attraction.

In the example shown, this holding element is a block permanent magnet 13.

Owing to being attracted by this permanent magnet 13, this counterweight 6 and therefore whole start unit all remain on the position of a restriction.

Therefore, this ball 10 has time enough to arrive ball 10 on ，Gai position, a position along predefined paths can to serve as a connection between wheel 2 and rocking bar 14.

Once this wheel 2 fully rotation make actuator 2a touch ball 10, then also actual on the swivel wheel meaning one connection the mobile rocking bar 14 of having served as of this ball 10, push a bayonet lock 15 to a tooth system 16 now.This bayonet lock 15 is connected to the part of shell, so that it can pivotable, does not illustrate here.A spring 14b guarantees that parts 14a is subject to prestress to a certain extent with respect to the remainder of this rocking bar 14.

By a holding element 17, this rocking bar 14 is remained fixed in to this position.

The feature that this holding element 17 has be when the ball 10 linked at the hand of rotation of wheel 2 again during drive rocker 14, this holding element can discharge rocking bar 14 again.

This function can be compared with the behavior of a ballpoint pen, wherein by again pressing the button, nib is returned in shell.

This bayonet lock 15 and tooth system 16 are designed to make wheel can at first only change in one direction around the deflection angle of axle L.Once arrive certain deflection angle, it is fixing that this deflection angle keeps.

If in each situation, a hill holder is arranged on the front axle and rear axle of this shopping cart, jointly form deflection angle that a conformation makes them relative tilt each other on this fixed position, it no longer may point-blank normally be moved.

Fig. 3 illustrates the details that relates to this permanent magnet 13.

As described, this permanent magnet 13 is keeping counterweight 6, in order to move to ball 10 time enough, makes it serve as the position of a connection between wheel 2 and rocking bar 14.

Yet, for the operation of this hill holder, it is also important to note that, then this start unit 3 is moved back into the described reference position of Fig. 1.This is allow this hill holder alternately to start and remove the unique method started.

This counterweight 6 must be separated with permanent magnet 13 again, to allow this start unit 3, again turns back to initial position.

A lever 18 is provided for this purpose, and it is pressed on counterweight 6, and is controlled by the movement of rocking bar 14, thereby it is discharged from permanent magnet 13.

This lever 18 is installed to be it can be rotated around an axle 18a.Can see from the transparent schematic diagram of this lever 18 a connection 18b that the line of rabbet joint is arranged who contacts with the actuator 14c of rocking bar 14.

The mobile of this rocking bar 14 can be enough far away for it is pushed away counterweight 6 from permanent magnet 13 by lever 18 pivotables, thereby make magnetive attraction no longer be enough to keep this counterweight 6.

This start unit 3 and connected all parts can turn back on reference position now again, and before moving through the magnet 11 of installing at subsurface, they all are positioned at (as shown in Figure 2) on this position.

Fig. 4 illustrates, once this block 7 is opened by pivotable, ball 10 just can roll into passage 20 along groove 19.

Fig. 5 illustrates this ball 10 and rolls through the situation after passage 20.In the present residing position of this ball, it can serve as a connection of 14 of actuator 2a on roller 2 and rocking bars.

Fig. 6 illustrates ball 10 is transmitted it by this actuator 2a process along passage 21, for clear reason, actuator is not shown here.The degree of depth of this passage 21 only is enough to allow ball 10 from wherein penetrating, thereby by the actuator 2a on roller 2, ball 10 is clamped.This passage extends with one heart around the axle of roller 2.

Only have when this ball 10 is arranged in this passage 21, actuator 2a just can touch ball 10, and if be not that so this actuator 2a can not contact with any other element of hill holder in the rotary course of wheel 2.

At its this respect, this ball 10 clashes into an edge 14d of rocking bar 14, thereby the strength that movable pulley 2 is produced sends rocking bar 14 to.

This means that enough large strength can be used for mobile this rocking bar 14.

As reference Fig. 3 illustration, the movement of this rocking bar 14 also causes the movement of lever 18, and this lever 18 is also freed magnetic counterweight 6 from permanent magnet 13.Then, this start unit 3 just can be got back to reference position, and wherein except other situations it, this block 7 has stoped ball 10 to roll in passage 20 along groove 19.

Now, by the actuator 2a on this wheel 2, that ball 10 is fartherly mobile in passage 21, until this ball arrives a hole 22, and can pass through this hole leaving channel 21 again.

This ball is now in reference position, identical with the mode of block 7.

When this start unit 3 is started again, identical process will start again, and unique difference is that the movement of this rocking bar 14 can cause the holding element 17 described in Fig. 2 in again discharging the position of this rocking bar.

In addition, this bayonet lock 15 no longer meshes with tooth system 16 now.This wheel can freely turn to around axle L again.

Fig. 7 illustrates hill holder known Fig. 1 from top.This view is clearly shown that this bayonet lock 15 and tooth system 16.

Fig. 8 illustrates a development of the present invention.This hill holder has also just entered the zone of action of magnet 22 in removing the state started.The lever that magnet 14c is housed endways is positioned on rocking bar 14.

A little less than the magnet 11 more known than Fig. 2 of the magnetic field of this magnet 22.The power of this weak magnet 22 produces a less impact to 9 of magnet, therefore only makes this

lever

4 and 8 slight deflections, and therefore, this block 7 can not discharge ball 10.

This magnet 14c is moved enough far from magnet 9, consequently can not produce any application force of the stronger pivotable that causes this

lever

4 and 8.

V is when this hill holder process magnet 22, and the state of hill holder can not change.

Fig. 9 and Figure 10 illustrate the development of this hill holder in starting state known in Fig. 4.

When this hill holder, during in starting state, this magnet 14c is positioned on a diverse location of hill holder inside.

Although this magnet of v 14c enough approaches magnet 9 is moved further from magnet 9, and finally arrives the final position shown in Figure 10, magnet 22 just makes the slight deflection of lever 4 and lever 8 (Fig. 9) again.

This makes this lever 4 and lever 8 produce enough large departing from, and makes this block 7 release balls 10 (Figure 10).

According to the present invention, this hill holder is characterised in that and can be selectively reacted the relatively weak magnetic field for removing startup, can advantageously utilize in every way this feature.For example, have and can in this is allowed to zone, low intensive magnetic area be installed, this can will still remove and start in a hill holder of starting state through magnetic area the time.

A low-intensity magnetic area that resembles this type of is passable, for example, advantageously is arranged in the zone of shopping cart bleeding point, with this zone of all shopping carts processes of guaranteeing to shift out from bleeding point, thereby makes the still any hill holder in starting state be disengaged startup.

When this type of a weak magnetic area be positioned at this be allowed to zone within but relatively approach and delimit non-of being allowed to zone boundary while thering is high-intensity magnetic field regional, this weak zone can be used for more reliably those are moved back into to this and are allowed in zone the hill holder transport trolley and remove and start from the non-zone that is allowed to.

In principle, all hill holders that started are removed startup by this powerful magnetic region.But, if some hill holders be not disengaged startup (whatsoever reason) through after strong magnetic area, it also can be disengaged startup by this weak magnetic area the time so.

Owing to by weak magnetic field, a hill holder started can being removed and started, therefore when one, in a side, be lifted and the shopping cart of returning from external belt when arriving this through border and being allowed to zone and having high-intensity magnetic field regional, this hill holder also can be disengaged startup usually.

, no matter as locate, in order to prevent that shopping cart or other transport trolley from leaving one and being allowed to regional purpose, the present invention all can be used for technical application.

Claims

1. a hill holder, that can be caused by magnetic and the power that act on this start unit of one of them start unit moves, and wherein the movement by this start unit can start this hill holder, and described hill holder is characterised in that:

-this start unit (3) has first lever (4), its mounting means is for making it rotate and to have the first and second throw of lever (4a around an axle (5), 4b), wherein said the first throw of lever (4a) has a counterweight (6)

-this start unit (3) has first permanent magnet (9), and it is upper that this first permanent magnet is attached to single armed second lever (8), and its mounting means is for it can be rotated around another axle (5a),

-between this first lever (4) and the second lever (8), exist a kind of running to connect, thereby the application force acted on this first lever (4) and the second lever (8) is compensated mutually, and do not make this start unit (3) produce any obvious movement, and

The application force that-independent role has been installed this second lever (8) of this first permanent magnet (9) thereon makes this start unit (3) be moved to this reference position,

Wherein, described the first and second throw of lever (4a, 4b), described counterweight (6), described the second lever (8) and described the first permanent magnet (9) are for the effect of compensate for disturbances power and therefore prevent the obvious movement of this start unit (3), and described the second lever (8) and described the first permanent magnet (9) move to this reference position for the power of utilizing magnetic to cause by this start unit (3).

2. hill holder according to claim 1, it is characterized in that: this start unit (3) has described counterweight (6) and described the first permanent magnet (9), and this counterweight (6) is by forming with the interactional a kind of material of magnet.

3. hill holder according to claim 1, it is characterized in that: when the application force that box lunch causes this start unit (3) to move to this reference position no longer works, this starting element (3) still remains fixed on this reference position.

4. hill holder according to claim 1 is characterized in that: because power coordinates or the interlocking holding element has been fixed this first throw of lever (4a), this start unit (3) still remains fixed on this reference position.

5. hill holder according to claim 4, it is characterized in that: the form of this holding element is the second permanent magnet (13), and this second permanent magnet is provided in this hill holder (1) and by magnetive attraction and fixes this counterweight (6) with static form.

6. hill holder according to claim 1, it is characterized in that: mechanism is provided, once the state of other elements in a restriction of this hill holder (1), this mechanism just stops the stationary state of this start unit (3).

7. hill holder according to claim 6, is characterized in that: the stationary state that can stop this start unit (3) by a kind of mechanism of positive control.

8. hill holder according to claim 1, it is characterized in that: this hill holder (1) can be removed startup by magnetive attraction.

9. hill holder according to claim 1, it is characterized in that: this hill holder (1) can be removed startup by magnetive attraction, and these magnetive attractions are corresponding to the magnetive attraction that can be used to start this hill holder.

10. hill holder according to claim 8, it is characterized in that: this hill holder (1) can be removed startup by magnetive attraction, and these magnetive attractions are weaker than and start the needed magnetive attraction of this hill holder.

11. hill holder according to claim 10, it is characterized in that: this hill holder comprises a magnet (14d), when this hill holder is activated, in the residing position of this magnet (14d) its magnetic fields in the first permanent magnet (9) thus and help the magnetic field work from outside to make this start unit (3) in this reference position.

12. hill holder according to claim 1 is characterized in that: act on magnetive attraction on described the second lever (8) for triggering the described start unit of described hill holder.

13. hill holder according to claim 1, it is characterized in that: described the second lever (8), described the first throw of lever (4a), described counterweight (6) and described the first permanent magnet (9) are the inertance elements of opposing translation and rotary acceleration, the axle (5 of these inertance elements wherein, 5a) be aligned in the axle of wheel (2), so that compensate each translational acceleration of described wheel when shopping cart acceleration, deceleration or described wheel movement are crossed obstacle.