ES2448826T3 - Construction group of projecting arm for a toy loading crane - Google Patents

Abstract

Construction group of the projecting arm for a toy loading crane, comprising a) a projecting arm support foot (3), b) a projecting arm (4) that i) is mounted on the projecting arm support foot ( 3), and ii) it is possible to pivot with respect to the protruding arm support foot (3) to adjust in height with respect to a pivot axis (5), and c) a projection arm fixing device (6) to fix the projecting arm (4) in a chosen pivoting position, the projecting arm fixing device (6) comprising i) an operable switching device (32), which can be moved between a release position, in which the projecting arm ( 4) it can be pivoted, with respect to the protruding arm support foot (3), around the pivot axis (5), and a fixing position, in which the protruding arm (4) is fixed, relative to the foot of support of projecting arm (3), around the pivot axis (5), and ii) a first arrangement Serrated tooth (47), provided on the projecting arm (4), and a second serrated device (25), provided on the support foot of the projecting arm (3), being engaged with each other in the setting position of the switching device ( 32) the first toothed device (47) and the second toothed device (25), characterized in that d) the second toothed device (25) is provided in a locking insert (22), which is mounted in a part housing of insertion of blockage (20) of the support arm of the projecting arm (3) and which can be moved by a movement of the switching device (32) with respect to the first toothed device (47), the second toothed device (25) being prestressed to through a spring device (23) in the engaged position with the first toothed device (47).

Description

Construction group of projecting arm for a toy loading crane

The invention relates to a projecting arm construction group for a toy loading crane. It is also aimed at a toy loading crane with a corresponding projecting arm construction group.

The construction groups of projecting arm for toy loading cranes are generally known by a notorious prior use. These often comprise a protruding arm that is pivotally mounted on a protruding arm support foot. It is generally disadvantageous in these known projecting arm construction groups that the projection of the projection arm does not have a safe operation in a pivoting position with respect to the projection arm support foot.

From DE 1 755 354 U a toy is known which for example can be a toy crane. The toy

15 comprises on a vehicle platform a housing on which a protruding arm is mounted so that it can be pivoted with respect to a journal and can be pivoted by a chain. The chain is fixed inside the housing on a cable drum. A locking wheel with locking teeth is associated with the cable drum. In addition, a two-arm lever with a locking arm and a driving arm belongs to the locking wheel. If the drive arm is pivoted, then the locking arm disengages from the locking wheel. Then you can rotate the cable drum. The projecting arm can be pivoted by a chain drive.

Document DE 25 04 101 A1 discloses a toy vehicle with a crane structure. The crane structure comprises a pivoting projecting arm with a serrated circular arc. The serrated circular arc engages with

25 a cogwheel that is rotatably mounted on the base body of the toy vehicle, and that is associated with a hand winch. A cranked lever forms a releasable autonomous lock for the projecting arm in the respective pivoting position. In the locked position, the angular lever engages in the serrated circular arc.

It is disadvantageous in these two toy vehicles that when it comes to play there are often damages in them or in particular in their protruding arms.

The invention is therefore based on the objective of providing a projecting arm construction group for a toy loading crane, whose projecting arm can be fixed locally extremely securely and easily in

35 a pivot position. A corresponding toy loading crane must also be created. In addition, the inconveniences indicated with respect to the prior art must be overcome.

This objective is achieved according to the invention by means of the features indicated in independent claims 1 and 15. The essential part of the invention is that a switching device is provided that can be moved between a release position and a fixation position. The term "can be moved" means in particular that the switching device can be pivoted and / or slid. In the release position of the switching device, the projecting arm can be pivoted with respect to the projecting arm support foot. Then the outgoing arm is practically released for pivoting. Then it can preferably be freely moved, in particular independently of guiding components other than

45 the joint, such as cables, chains or the like. In contrast, in the setting position of the switching device the protruding arm is fixed, with respect to the protruding arm support foot, around the pivot axis. Then the protruding arm cannot swing. By means of the configuration with the toothed devices an extremely safe and simple fixation of the protruding arm with respect to the protruding arm support foot can be achieved. The spring device, through which the two toothed devices are prestressed in the gear position, can form an overload protection device for the projection arm fixing device. An overload protection device of this type prevents damage to the toy vehicle in case of an overload acting on the protruding arm.

Preferably the first toothed device has several teeth that are arranged successively. From

Favorably, the first toothed device has at least four, more preferably at least six teeth. It is convenient when the first toothed device is provided directly on the projecting arm. Advantageously, the second serrated device has at least two teeth that are arranged successively. Preferably there are exactly two teeth, among which there is a tooth housing to accommodate a tooth of the first toothed device. Favorably, the second toothed device is directly or indirectly connected with the supporting arm support foot.

It is advantageous when the projecting arm can be fixed in several or different pivoting positions. It is advantageous when in the fixing position of the switching device the protruding arm is fixed both in a first pivoting direction and in a second pivoting position, contrary to the

65 first pivot position. Preferably, the projecting arm fixing device forms a direct or pure locking and pivoting device.

In particular, the pivot axis extends horizontally. Favorably, the pivot axis extends in an upper end area of the protruding arm support foot.

It is advantageous when the locking insert is guided in a moveable manner. 5 Additional advantageous configurations of the invention are indicated in the dependent claims.

According to claim 2, the switching device is pivotally mounted on the supporting arm support foot. It is advantageous when the switching device can be pivoted 360 °. By way of

At least one bearing body is provided on the projection arm support foot for pivotally mounting the switching device.

The switching body according to claim 3 is practically made as a switching cam. It is advantageous when the at least one cam boss causes the second toothed device to engage with

15 the first toothed device when the cam boss is in a fixing position. It is advantageous when the switching device has two cam projections. Favorably, the two cam projections are then arranged so that they face each other. In a favorable manner the at least one cam projection is then fixedly connected with the spring head or the locking insert, so that the switching device is fixed in its fixing position.

The at least one detection projection according to claim 4 provides the user with a perceptible or palpable response about the setting position of the switching device. Preferably define an overcoming deadlock. The switching device thus adopts a stable position in its fixing position. To overcome the detection projection a high effort is necessary. When the effort is too small,

25 a shift of the switching device is not performed. Then it returns autonomously to its previous position.

The spring head according to claim 5 can form an overload protection device for the projecting arm fixing device. When in this case a torque greater than one is applied to the projecting arm

30 threshold value, the spring head is preferably compressed, so that the toothed joint between the first toothed device and the second toothed device is released. Preferably, the locking insert is also moved so that it moves away from the projecting arm. Then the outgoing arm is released.

The configurations according to claim 6 and 7 indicate a preferred refinement of the spring head. The travel core is preferably configured with spring elasticity.

The configuration according to claim 9 leads to a projecting arm construction group having an extremely simple structure. Thus it can be mounted in a particularly simple way.

The drive handle according to claim 10 allows a simple movement of the switching device, in particular a pivoting of the switching device. The drive handle is preferably positioned at a point where it can be grasped easily and can be operated manually. It is advantageous when the drive handle can be pivoted about the pivot axis.

In the configuration according to claim 11, the locking insert is preferably also moved so that it moves away from the projecting arm when the torque is applied to the projecting arm. Then the outgoing arm is released. The spring head preferably allows a spring movement of the locking insert.

or of the second toothed device with respect to the protruding arm or with respect to the first toothed device. It can be compressed elastically.

In the embodiment of the switching device with a switching body and a moving soul the switching body may have at least one cam boss a concavely curved clamping surface, being in the setting position of the switching device the cam boss or one of the

55 cam projections directed to the displacement soul, and the holding surface of this cam projection acting on the displacement soul, a curvature of this clamping surface being adapted to a curvature of the displacement soul. A switching device of this type is fixed with respect to its fixing position extremely securely by means of the travel core.

The toy base body according to claim 15 is preferably configured as a toy vehicle. Alternatively, other alternative configurations of the toy base body are possible, for example as a toy rail body, toy foundation or toy frame.

A preferred embodiment of the invention will now be described by way of example with reference to the attached drawing. In this regard they show:

Figure 1, a simplified side view of a toy loading crane with a projecting arm construction group according to the invention,

Figure 2, a side view of the projecting arm construction group shown in Figure 1, its switching device being in a release position,

Figure 3, detail III shown in Figure 2,

Figure 4, a detailed view corresponding to Figure 3, the switching device in this case being in the fixing position,

Figure 5, a top view of the projecting arm fixing device of the projecting arm construction group shown in Figures 1 to 4, and

Figure 6, an exploded view of the projecting arm construction group illustrated in its entirety in Figures 1 and 2.

The toy loading crane shown in Figure 1 comprises a toy base body 1 and a projecting arm construction group 2 arranged in the toy base body 1. The toy base body 1 is configured as a toy land vehicle and has several wheels 9 to roll on a floor (not shown).

The projecting arm construction group 2 in turn has an elongated projecting arm support foot 3, arranged in the toy base body 1, and an projecting arm 4 that is mounted on the projecting arm support foot 3 so that it can be pivoted about a horizontal pivot axis 5. The projecting arm 4 can be pivoted up and down. Preferably, the protruding arm support foot 3 can be pivoted.

or rotate, with respect to the toy base body 1, around a vertical pivot axis. It runs preferably vertically.

In addition, the projecting arm construction group 2 has a projecting arm fixing device 6. The projecting arm fixing device 6 serves to fix the projecting arm 4 in a pivoting position. When the projecting arm fixing device 6 is in its fixing position, then the projecting arm 4 is fixed and therefore cannot be pivoted about the pivot axis 5. Instead, when the projecting arm fixing device 6 is in its release position, the projecting arm 4 can be pivoted about the pivot axis 5 to adjust in height.

35 The outgoing arm support foot 3 is configured in two pieces and thus has a first half of the outgoing arm support foot 7 and a second half of the outgoing arm support foot 8. The outgoing arm support foot halves 7, 8 can be plugged into each other and thus form in the connected state the protruding arm support foot 3. They are configured essentially identically with respect to a plane of symmetry.

Each half of the outgoing arm support foot 7, 8 has a bearing appendage 10 or 11 at the bottom. The bearing appendages 10, 11 have in the assembled state of the outgoing arm support foot halves 7, 8 a fundamentally round outer cross-sectional shape. They are hooked into a corresponding opening in the toy base body 1 and thus allow the projection arm support foot 3 to be mounted on the

45 toy base body 1. In each bearing appendix 10, 11 a retaining projection 12 or 13 is projected at the bottom which projects laterally outwards, which fixes the support arm of the projection arm 3 on the toy base body 1 in the vertical direction and thus prevents it from rising from the toy base body 1. The retention projections 12, 13 can be engaged, for example, below the toy base body 1 or in a corresponding lateral groove in the base body of toy 1.

Opposite to the retention projections 12, 13 each half of the protruding arm support foot 7, 8 has a bearing head 14 or 15. Each bearing head 14, 15 has an outer side wall 16. The side walls 16 they face each other in the assembled state of the protruding arm support foot halves 7, 8. They then extend parallel to each other. From the side wall 16 of the bearing head

55 15 a bearing bolt 17 protrudes in the direction towards the bearing head 14 of the first half of the projecting arm support foot 7. The bearing bolt 17 is essentially located in the center of the bearing head 15 and defines the pivot shaft 5. It is made with a circular or circular ring-shaped cross section.

In the first half of the protruding arm support foot 7, a recess 18 is formed having a circular cross-section.

Each bearing head 14 or 15 also has two lateral guide walls 19 facing each other, which protrude from the respective side wall 16 perpendicularly inwardly and preferably run 65 essentially vertically. The guide walls 19 of the bearing heads 14, 15 laterally delimit together a housing of locking insert 20 which is opposed to the bearing appendages

10, 11 is open up. The housing of locking insert 20 is delimited downwards towards the bearing appendages 10, 11 by means of two foot souls 21, which enter perpendicularly from the side walls 16 of the respective bearing heads 14, 15, and at the bottom they are joined with the corresponding side walls 19. Guiding walls 19 protrude perpendicularly nerves of

5 reinforcement 50 laterally out.

A separate locking insert 22 is inserted into the housing of locking insert 20. The locking insert 22 can be moved in the vertical direction with respect to the protruding arm support foot 3. It has at the top a spring head 23 which in the vertical direction has spring elasticity with respect to the support foot with protruding arm 3. The spring head 23 has an upper support core 24 which essentially has a toothed device 25 in its central part. In addition, the spring head 23 has a lower displacement soul 26 which is arranged opposite to the soul of support 24. The support core 24 and the travel core 26 are connected to each other at their ends at lateral connection points 27. From each connection point 27, a sliding wall 28 of the locking insert 22 is projecting. down towards the bearing appendages 10, 11. The sliding walls 28 run parallel and apart from each other. The support soul 24 and the displacement soul 26 join the sliding walls 28 together. The support core 24 is curved upwardly or convexly with respect to a direct joint between the connection points 27, while the displacement core 26 is curved downward with respect to the direct joint between the connection points 27. Thus, the support soul 24 and the travel soul 26 are curved in the opposite direction with respect to each other, so that between them there is a spring space 29 of variable size. The support soul 24 and the travel soul 26 run essentially perpendicularly or obliquely with respect to the sliding walls 28. In the assembled state of the protruding arm support foot 3, the sliding walls 28 are in contact with the guiding walls 19 on the inner side, or are disposed adjacent to the guiding walls 19. 25 The sliding walls 28 run parallel to the guiding walls 19. The bearing bolt 17 is between the sliding walls 28. It is arranged below the spring head

23. The spring head 23 is arranged in the opposite direction with respect to the foot souls 21. The toothed device 25 has two teeth 30, there being between the two teeth 30 a tooth housing 31. The teeth 30 are arranged successively . They have the same orientation.

A switching device 32 is mounted so that it can be pivoted on the bearing bolt.

17. The switching device 32 can be pivoted between a fixing position and a release position. It has a switching body 33 with a non-round cross-section, and a cylindrical transmission bolt 34 that is fixedly attached to a rotation with the switching body 33 and

35 protrudes axially from its center. In the switching body 33, a central bearing opening 35 which is cylindrical is configured at the end. The bearing bolt 17 engages in the bearing opening 35 to mount the switching device 32 so that it can be pivoted. The switching body 33 is made as a cam-shaped switching ellipse. It is configured with an elongated cross section and has two longitudinal ends 36 flattened opposite each other that form practically cam protrusions. At the longitudinal ends 36 the switching body 33 has clamping surfaces 37 concavely curved, facing each other. On both sides of each clamping surface 37, the switching body 33 thus has in each case a detection projection 38a which is provided on the laterally outer edges of the longitudinal ends 36.

45 The transmission bolt 34 penetrates the recess 18. It is mounted on the recess 18 so that it can be rotated or pivoted. At the end of the transmission bolt 34 protruding from the recess 18, a drive handle 38 is fixedly positioned in front of a rotation. The drive handle 38 is made in a non-round manner and preferably has several clamping ribs 39 so that It can hold better. It is placed on the transmission bolt 34. It can be operated manually from outside.

The projecting arm 4 is reconfigured in two pieces. It is formed by a first half of the projecting arm 40 and a second half of the projecting arm 41. The projecting arm halves 40, 41 are essentially performed identically with respect to a plane of symmetry. They can be plugged into each other.

55 Each half of the projecting arm 40, 41 has a side wall 42 or 43. The side walls 42, 43 extend essentially parallel to each other.

Each projection arm half 40, 41 also has, at its end 44 directed to the projection arm support foot 3, a partial bearing head housing 45 that is laterally delimited on the outside by the respective side wall 42 or 43. Furthermore, each partial bearing head housing 45 is delimited by an annular core of the primitive circle 46 in the radial direction above and laterally. In each annular core of the primitive circle 46 several teeth 47 are arranged successively in the circumferential direction. The teeth 47 extend parallel to each other. They run perpendicularly with respect to the circumferential direction of the annular souls of the primitive circle 46. The protruding arm fixation device 6 is formed by teeth 30 or 47 65 which in turn form corresponding serrated devices. In the area of the partial bearing head housings 45, a round bearing recess 48 is provided on each side wall 42, 43. In the state

assembled from the projecting arm half 40, 41 the partial bearing head housings 45 face each other and together form a bearing head housing.

In the assembled state of the projecting arm construction group 2, the bearing heads 14, 15 are housed in

5 the bearing head housing. Annular souls 49 arranged in the bearing heads 14, 15 on the outer side are engaged on the inner side in the bearing recesses 48. The annular souls 49 run around the pivot axis 5.

A guide unit 51 of variable length is arranged between the projecting arm support foot 3 and the projecting arm 4 which is actuated in case of a pivot of the projecting arm 4 and guides it in this respect. The guiding unit 51 comprises a base body 52 and an extension bar 53 movably guided in the base body 52. The extension bar 53 is articulated in a bearing bolt 54, which is arranged in the second half foot of projection arm support 8 adjacently with respect to the upper end of its bearing appendix 11. The extension arm 53 has a corresponding bearing eye 55 for this purpose. The bearing bolt 15 penetrates a corresponding bearing eyelet 56 into the first half of the protruding arm support foot

7. A bearing eye 57 is also provided on the upper body 52. A bearing journal 58 arranged on the side wall 42 adjacent to the annular core of the primitive circle 46 is engaged in the bearing eye 57. The bearing journal 58 further enters a corresponding bearing opening 59 which is arranged in the side wall 43 of the projecting arm half 41.

At the end 60 opposite the bearing head housing, an articulation journal 61 protruding laterally outwards is located on each half of the projecting arm 40 or 41. A pivot piece 62 is articulated in the articulation journal 61. For this purpose, corresponding first bearing grooves 63 are provided in the pivot piece 62.

25 An extension piece 64 is guided axially displaceably in the pivot piece 62 to extend the pivot part 62. The extension piece 64 can be removed at the front of the pivot part 62, and conversely also it can be reinserted into the pivot piece 62. A corresponding guide is provided for this in the extension piece 64 and / or in the pivot piece 62. In the extension piece 64 a bearing housing is configured in the front part 65 in which a shovel, a gripping element or the like can be mounted.

Adjacent to the first bearing grooves 63, second bearing grooves 66 are provided in pivot piece 62. The second bearing grooves 66 are disposed above the

35 first bearing grooves 63. In the second bearing grooves 66, bearing appendages 67 that are arranged on the outer side are engaged in a first coupling member 68. Opposite to the bearing appendages 67 are provided in the first member coupling 68 bearing recesses 69. The bearing recesses 69 are joined with bearing bodies 70 of a second coupling member 71. Opposite to the bearing bodies 70 are arranged in the second coupling member 71 bearing appendages 72 which are engaged in corresponding lateral bearing grooves 73a in the protruding arm halves 40, 41 adjacent to the articulation pins 61.

Between the bearing bodies 70 extends a transmission bar 73 that is part of the second articulation member 71. An elongated extension body 74 is engaged in the transmission bar 73 which is guided by

45 movable way in a bushing body 75. The bushing body 75 is connected with an articulation piece 76 which in turn is articulated in the projecting arm 4. For this purpose, a corresponding support 77 is provided approximately centered on the arm outgoing 4.

The function of the toy loading crane is described below. As already mentioned, the switching body 33 can be pivoted between a release position and a fixation position. In the fixing position, which is shown in Figure 4, the switching body 33 is oriented vertically, that is, the longitudinal extension of the switching body 33 extends in a vertical direction. One of the longitudinal ends 36 is directed to the sliding core 26. The clamping surface 37 of this longitudinal end 36 engages from below in the sliding core 26. The curvature of this surface of

55 clamping 37 is adapted to the curvature of the sliding core 26. Through this clamping surface 37 and the sliding core 26, a movement force acting upwards in the movement is exerted from below on the locking insert 22. direction towards the teeth 47, so that a chosen tooth 47 engages with a drag in the tooth housing 31. The locking insert 22 is in an upper position. The pivoting position of the projecting arm 4 depends on the tooth 47 chosen. By means of this hook, the projecting arm 4 is fixed with respect to the support arm of the projecting arm 3.

By pivoting the drive handle 38 around the pivot axis 5, the transmission bolt 34, fixedly connected thereto with a rotation, is pivoted correspondingly around the pivot axis 5. Consequently the body of switching 33, fixedly connected to a rotation with the transmission bolt 34, is also pivoted correspondingly around the pivot axis 5. In this respect the clamping surface 37 that until now fixed, is rotated from so that it moves away from the travel core 26. Preferably, the drive handle 38 is rotated thereto approximately 90 °. In this respect the deadlock is overcome. In the release position one of the transverse ends of the switching body 33 is disposed adjacently with respect to the travel core 26. The switching body 33 now no longer exerts any pressure from below, through the travel soul 5 , on the locking insert 22. The locking insert 22 is now in a lower position. The teeth 47 are disengaged from the tooth housing 31. The release position is shown in Figure 3. The protruding arm 4 can thus be pivoted, with respect to the protruding arm support foot 3, around the pivot axis 5. Then it can be fixed locally in another pivot position. The pivoting position defines the tooth 47 which then engages in the tooth housing

10 31. The locking insert 22 is therefore guided in the lock insert 20 housing so that it can be moved between the upper position and the lower position.

When an overload acts on the projecting arm 4, the spring head 23 is compressed by reducing the spring space 29. The travel soul 26 bends. In this regard, the locking insert 22 moves 15 so that it moves away from the teeth 47. The second toothed device 25 is disengaged from the teeth 47. The locking insert 22 thus forms a front protection device overload, which in case of an overload releases the toothed joint between the two toothed devices, and thus prevents damage to the toy loading crane, in particular in the projecting arm or its bearing. When the overload is no longer present, the spring head 23 is pressed again towards the teeth 47 through the travel core 26. Then it returns to

There is a toothed joint between the two toothed devices.

When the pivot piece 62 is pivoted, the coupling members 68, 71 are also pivoted relative to each other. The extension body 74 moves axially.

Claims (12)

1. Construction group of projecting arm for a toy loading crane, comprising 5 a) one outgoing arm support foot (3), b) an outgoing arm (4) that i) it is mounted on the outgoing arm support foot (3), and ii) it can be pivoted with respect to the outgoing arm support foot (3) to adjust in height with 10 with respect to a pivot axis (5) , Y c) a protruding arm fixation device (6) for fixing the protruding arm (4) in a chosen pivoting position, the protruding arm fixing device (6) comprising 15 i) an operable switching device (32), which can be moved between a release position, in which the protruding arm (4) can be pivoted, relative to the protruding arm support foot (3), around of the pivot axis (5), and a fixing position, in which the protruding arm (4) is fixed, with respect to the protruding arm support foot (3), around the pivot axis (5), and ii ) a first toothed device (47), provided on the projecting arm (4), and a second toothed device (25), 20 provided on the support arm of the projecting arm (3), the first toothed device (47) and the second toothed device (25) being engaged with each other in the fixing position of the switching device (32),  characterized by that d) the second toothed device (25) is provided in a locking insert (22), which is 25 mounted in a housing of locking insert (20) of the outgoing arm support foot (3) and which can be moved by a movement of the switching device (32) with respect to the first toothed device (47), being prestressed the second toothed device (25) through a spring device (23) in the engaged position with the first toothed device (47). 2. A projecting arm construction group according to claim 1, characterized in that the switching device (32) is mounted so that it can be pivoted on the projecting arm support foot (3). 3. A projecting arm construction group according to one of the preceding claims, characterized in that the switching device (32) has a switching body (33), which is made in a non-round manner 35 and having at least one cam boss (36) to engage the second toothed device (25) with the first toothed device (47). 4. Construction group of projecting arm according to claim 3, characterized in that in the body of switching (33) is provided at least one detection projection (38) protruding laterally, adjacent to at least one cam projection (36), to detect the fixing position. 5. A projecting arm construction group according to one of claims 1 to 4, characterized in that the locking insert (22) has a spring head (23) as spring device to allow a spring movement of the switching device (32) with respect to the first toothed device (47). 6. A projecting arm construction group according to claim 5, characterized in that the spring head (23) has a travel core (26) that runs at least in sections towards the switching device (32) and in the position of Fixation is in a direct drive connection with the switching device (32). 7. A projecting arm construction group according to claims 5 or 6, characterized in that the second toothed device (25) is provided in a support core (24) which runs at least in sections away from the switching device (32) and that It is part of the spring head (23). A construction group of the projecting arm according to one of the preceding claims, characterized in that the first toothed device (47) has several teeth arranged successively, which are arranged in a body of a primitive circle (46) in the projecting arm ( 4). 9. A projecting arm construction group according to one of the preceding claims, characterized in that the switching device (32) can be pivoted around the pivot axis (5). 10. The projecting arm construction group according to one of the preceding claims, characterized in that a drive handle (38) is fixedly connected to the switching device (32) to move the switching device (32). 65 11. Projecting arm assembly group according to one of the preceding claims, characterized in that the spring head (23) is compressed so that the toothed joint between the first toothed device (47) and the second toothed device (25) is releases when a turning torque greater than a threshold value is applied to the projecting arm (4).

12.

 Construction group of the projecting arm according to one of the preceding claims, characterized in that the locking insert (22) is inserted into a housing for locking insert (22).

13.

 Construction group of projecting arm according to one of the preceding claims, characterized in that the

10 second toothed device (25) is engaged with the first toothed device (47) in a first position of the locking insert (22), while in a second position of the locking insert (22) is disengaged from the first toothed device (47). 14. A projecting arm construction group according to one of the preceding claims, characterized in that the switching device (32) adopts a stable position in its fixing position. 15. Toy loading crane, comprising a) a toy base body (1), and B) a projecting arm construction group (2) according to one of the preceding claims, arranged in the toy base body (1).