FIELD OF THE INVENTION
[0001] The present invention relates to a three-dimensional toy train built up from a plurality
               of modeled flat parts, each of which being provided at predetermined positions with
               slits to enable connection of the modeled flat parts through engagement of the slits
               with one another to form locomotive and cars of the toy train. And, a player is trained
               to employ imagination and thinking ability in the process of assembling the flat parts
               into the toy train.
 
            BACKGROUND OF THE INVENTION
[0002] A conventional modeling toy usually includes a plurality of connectable parts and
               a manufacturer's instruction sheet. A player follows the instruction sheet to sequentially
               assemble the connectable parts into a complete model. In the process of assembling
               the modeling toy, the player is trained to employ his or her thinking and enjoys the
               fun of building up the toy. Glue is usually applied on the connectable parts to facilitate
               firm connection of the parts to one another. Once the conventional modeling toy is
               completed, it could not be disassembled for re-assembling and therefore brings only
               little fun to the player. Moreover, when the instruction sheet enables a player to
               assemble the connectable parts more easily, it also prevents the player to employ
               his or her free imagination and thinking ability in assembling the toy.
 
            [0003] It is therefore tried by the inventor to develop a three-dimensional built-up toy
               train to eliminate drawbacks existing in the conventional built-up toys.
 
            SUMMARY OF THE INVENTION
[0004] A primary object of the present invention is to provide a three-dimensional built-up
               toy train that allows a player to employ imagination and thinking ability in the process
               of assembling the toy train, and the toy train could be disassembled for re-building
               at any time.
 
            [0005] To achieve the above and other objects, the present invention includes a plurality
               of modeled flat parts directly stamped on a thin plate for assembling into a front
               locomotive, a back locomotive, and a plurality of two-section passenger cars. The
               modeled flat parts are provided at predetermined positions with slits having predetermined
               depths to enable connection of the modeled flat parts through engagement of the slits
               with one another. A player may employ his or her free imagination and thinking ability
               to engage the slits on different modeled flat parts in different ways, giving the
               completed toy train different appearances.
 
            BRIEF DESCRIPTION OF THE DRAWINGS
[0006] The structure and the technical means adopted by the present invention to achieve
               the above and other objects can be best understood by referring to the following detailed
               description of the preferred embodiments and the accompanying drawings, wherein
               
               
Fig. 1 is an assembled perspective view of a three-dimensional built-up toy train
                  according to a preferred embodiment of the present invention;
               Fig. 2 shows various modeled flat parts are stamped on thin plates for assembling
                  into a locomotive of the toy train of Fig. 1;
               Fig. 3 shows various modeled flat parts are stamped on a thin plate for assembling
                  into a two-section passenger car of the toy train of Fig. 1;
               Fig. 4 is a perspective view of a two-section passenger car of the toy train of Fig.
                  1; and
               Fig. 5 shows various modeled flat parts are stamped on a thin plate for assembling
                  into a one-section passenger car of the toy train of the present invention.
 
            DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0007] Please refer to Fig. 1 that is an assembled perspective view of a three-dimensional
               built-up toy train according to a preferred embodiment of the present invention. As
               can be clearly seen from Fig. 1, the entire toy train of the present invention is
               built up from a plurality of modeled flat parts that are directly stamped on thin
               plates, as shown in Figs. 2, 3 and 4. The modeled flat parts could be assembled into
               a front locomotive 10, a back locomotive 20, a plurality of two-section passenger
               cars 30, and a plurality of toy passengers 40.
 
            [0008] Please refer to Fig. 2. Each front locomotive 10 includes two front locomotive walls
               10, each of which is a locomotive-shaped flat part having a beveled front edge. Each
               of the two front locomotive walls 10 is provided near front and rear ends of a straight
               lower edge with two slits 101, at the beveled front edge with a first recess 102,
               and on a straight upper edge at a predetermined position with a second recess 103.
               There are also flat parts for a windshield 11 and a front roof 12 that are provided
               at two lateral sides with two tabs 111, 121, respectively, adapted to engage with
               the first recesses 102 at the beveled front edges and the second recesses 103 at the
               upper edges, respectively, of the two front locomotive walls 10. A first front locating
               part 13 is provided on an upper edge near two outer ends with two slits 131 for engaging
               with the two front slits 101 separately on the lower edges of the two front locomotive
               walls 10, and on a lower edge with a central slit 131 for engaging with a supporting
               part 15. A second front locating part 14 is symmetrically provided on an upper edge
               near two outer ends with two pairs of slits 141 for engaging with the two rear slits
               101 separately on the lower edges of the two front locomotive walls 10, and provided
               on a lower edge with a central slit 141 for engaging with the supporting part 15,
               too.
 
            [0009] The supporting part 15 is provided on an upper edge with two spaced slits 151 for
               engaging with the central slits 131 and 141, and on a lower edge with a central slit
               151 for engaging with a slit 161 at an upper side of a wheel holder 16. The wheel
               holder 16 is provided at a lower side with two sideward projected round heads 162
               to rotatably support two round wheels 17.
 
            [0010] Each back locomotive 20 includes two back locomotive walls 20, each of which is a
               flat part being provided on a lower edge with three spaced slits 201, and on an upper
               edge with a recess 202. There are also a flat part for a back roof 21 that is provided
               at two lateral sides with two tabs 212 adapted to engage with the two recesses 102
               at the upper edges of the two back locomotive walls 20.
 
            [0011] A first back locating part 22 is symmetrically provided on an upper edge near two
               outer ends with two pairs of slits 221 for engaging with the most front slits 201
               on the lower edges of the two back locomotive walls 20, and provided on a lower edge
               with a central slit 221 for engaging with a link part 24. A second back locating part
               23 is provided on an upper edge near two outer ends with two slits 231 for engaging
               with the middle slits 201 on the lower edges of the two back locomotive walls 20,
               and on a lower edge with a central slit 231 for engaging with the link part 24. A
               stopper part 25 is engaged at two upward opened slits 251 with the two rear slits
               201 of the two back locomotive walls 20.
 
            [0012] The link part 24 is provided on an upper edge near a front portion thereof with two
               spaced slits 241 for separately engaging with the central slits 221, 231 on the lower
               edges of the first and the second back locating parts 22, 23; on a lower edge of the
               front portion with a central slit 241 for engaging with a slit 261 on an upper side
               of a wheel holder 26; and on the lower edge of a rear portion of the link part 24
               with a downward extended round head 242 for engaging with a ring-shaped end of a connector
               29 or 34, of which another ring-shaped end is connected to one passenger car 30 as
               will described in more details later.
 
            [0013] The wheel holder 26 is provided at a lower side with two laterally extended round
               heads 262 to rotatably support two wheels 27 thereon.
 
            [0014] Two coupling parts 28 are provided on a lower edge with two spaced slits 281 for
               separately engaging with two upper slits 141, 221 of the second front locating part
               14 and the first back locating part 22.
 
            [0015] Other connecting mechanisms for the back locomotive walls 20 are the same as that
               for the front locomotive walls 10.
 
            [0016] Please refer to Fig. 3 that shows various parts for building up a two-section passenger
               car 30 of the toy train shown in Fig. 1. As shown, each two-section passenger car
               includes two floor parts 30, each of which being provided at two lateral sides with
               two side slits 301 for engaging with a wheel holder 31 and at a center with an axially
               extended insertion hole 302 for a toy passenger 40 to insert therein. Since there
               are two symmetrical sets of flat parts for forming the two-section passenger car 30,
               only one set of the flat parts is described herein.
 
            [0017] The wheel holder 31 is provided on a lower side with two spaced slits 311 for separately
               engaging with a slit 331 provided on an upper edge at an end of a long coupling 33,
               on the lower side at two outer ends thereof with two laterally extended round heads
               312 for rotatably supporting two wheel parts 35, on an upper side with a central slit
               311 for engaging with a link part 32, and on the upper side at two outer ends thereof
               with two upward extensions 313 for engaging with the side slits 301 on the floor part
               30.
 
            [0018] The link part 32 is provided on a first end portion of a lower edge with a central
               slit 321 for engaging with the central slits 311 on the upper side of the wheel holder
               31, and at an outmost end of a second portion of the lower edge with a downward extended
               round head 322 for engaging with an ring-shaped end of a connector 34, another ring-shaped
               end of which is engaged with the downward extended round head 242 of the link part
               24.
 
            [0019] Each long coupling 33 engaged at an end with one lower slit 311 of the wheel holder
               31 is provided on the upper edge at another end with another slit 331 for engaging
               with a lower slit 311 of another wheel holder 31 connected to a next passenger car
               30, so as to couple two adjacent passenger cars 30.
 
            [0020] To build up the three-dimensional toy train with the above-described flat parts,
               first connect the two front locomotive walls 10 to the first and the second front
               locating parts 13, 14 by engaging the two bottom slits 101 of the walls 10 with the
               upper slits 131, 141 of the locating parts 13, 14, so that the first front locating
               part 13 is located in front of the second front locating part 14. Then, connect the
               supporting part 15 to the two front locating parts 13, 14 by engaging the two spaced
               upper slits 151 of the supporting part 15 with the lower central slits 131, 141 of
               the two front locating parts 13, 14, and connect the wheel holder 16 to the supporting
               part 15 by engaging the upper slit 161 of the wheel holder 16 with the lower central
               slits 151 of the supporting part 15. Wheels 17 may be rotatably mounted onto the two
               laterally extended round heads 162 of the wheel holder 16 before the latter is connected
               to the supporting part 15. Thereafter, the windshield 11 and the front roof 12 are
               connected to the front locomotive walls 10 by engaging the tabs 111, 121 of the windshield
               11 and the front roof 12 with the recesses 102, 103 of the front locomotive walls
               10, respectively.
 
            [0021] Then, connect the two back locomotive walls 20 to the first and the second back locating
               parts 22, 23 by engaging the most front and the middle bottom slits 201 of the two
               walls 20 with the upper slits 221, 231 of the two locating parts 22, 23, respectively,
               so that the first back locating part 22 is located in front of the second back locating
               part 23. The stopper part 25 is connected to the walls 20 by engaging the two slits
               251 with the two rear slits 201 of the walls 20. Then, connect the link part 24 to
               the first and the second back locating parts 22, 23 by engaging the two upper slits
               241 of the link part 24 with the lower central slits 221, 231 of the two back locating
               parts 22, 23, so that the downward extended round head 242 of the link part 24 is
               close to the stopper part 25. Thereafter, connect the wheel holder 26 to the link
               part 24 by engaging the upper slit 261 of the wheel holder 26 with the lower central
               slits 241 of the link part 24. Wheels 27 may be rotatably mounted onto the two laterally
               extended round heads 262 of the wheel holder 26 before the latter is connected to
               the link part 24. Finally, connect the back roof 21 to the two back locomotive walls
               20 by engaging the two tabs 212 with the upper recesses 202 on the two walls 20, and
               connect the two coupling parts 28 to the second front locating part 14 and the first
               back locating part 22 by engaging the slits 281 with two upper slits 141, 221, respectively.
               At this point, a locomotive for the toy train is formed.
 
            [0022] Next, assemble each section of the two-section passenger car 30 by rotatably mounting
               the two wheel parts 35 onto the laterally extended round heads 312 of the wheel holder
               31, and engage the two upward extensions 313 of the wheel holder 31 with the two side
               slits 301 of the floor part 30. Then, connect the link part 32 to the wheel holder
               31 by engaging the lower slit 321 of the link part 32 with the upper central slit
               311 between the two upward extensions 313 of the wheel holder 31. Finally, connect
               the two coupling parts 33 to the wheel holder 31 by engaging two upper slits 331 at
               an end of the coupling parts 33 with the two lower slits 311 of the wheel holder 31.
               At this point, one section of the two-section passenger car 30 is formed. By engaging
               the upper slits 331 at another end of the two coupling parts 33 with the two lower
               slits 311 of another wheel holder 31 on a second section of the two-section passenger
               car 30, a two-section passenger car 30 is completed. The link parts 32 for the two-section
               passenger car 30 are so mounted that their downward extended round heads 322 are separately
               located at two opposite ends of the two sections of the passenger car 30.
 
            [0023] The connectors 29 and 34 are used to connect the locomotive of the toy train to the
               first two-section passenger car 30 and a preceding two-section passenger car 30 to
               a following two-section passenger car 30 by separately engaging two ring-shaped ends
               of each connector 29, 34 with the round heads 242, 322 of two adjacent link parts
               24, 32 or two round heads 322 of two adjacent link parts 32.
 
            [0024] The toy passengers 40 may be connected to the passenger car 30 by inserting a lower
               tab 41 of the toy passenger 40 into the central slit 302 of the floor part 30, as
               shown in Fig. 4. A player may employ his or her imagination and thinking ability to
               assemble the various flat parts in different ways into a toy train. Differently shaped
               toy passengers may be provided to increase the fun of the toy train. To create more
               fun, the toy passengers may be differently designed cartoon figures, or figures of
               famous performers or politicians.
 
            [0025] Fig. 5 shows another set of various flat parts for assembling into a second embodiment
               of the passenger car. The passenger car of this embodiment is a one-section passenger
               car and is built up from a flat floor part 50 having two side slits 501 and a central
               slit 502 for a toy passenger 55 to connect thereto; a wheel holder 51 being provided
               on a lower edge near two outer ends with two slits 511, on the lower edge at two outer
               ends with two laterally extended round heads 512, on an upper edge at two outer ends
               with two upward extensions 512 for engaging with the two side slits 501 of the floor
               part 50, and on the upper edge with a central slit 511; two wheel parts 54 rotatably
               mounted on the two round heads 512 of the wheel holder 51; a link part'52 being provided
               on a lower edge with a central slit 521 for engaging with the upper central slit 511
               of the wheel holder 51 and on the lower edge at two outer ends with two downward extended
               round heads 522; and a connector 53 having two ring-shaped ends for separately engaging
               with round heads 522 of two link parts 52 of a preceding and of a following passenger
               car 50, so as to serially connect two passenger cars 50.
 
          
         
            
            1. A three-dimensional built-up toy train, comprising a plurality of modeled flat parts
               directly stamped on a thin plate for assembling into a front locomotive, a back locomotive,
               and a plurality of two-section passenger cars;
               said modeled flat parts for forming said front locomotive including two front locomotive
               walls, a windshield, a front roof, a supporting part, a first front locating part,
               a second front locating part, a wheel holder, and two wheels; and said flat parts
               for forming said front locomotive being provided at predetermined positions with slits
               having predetermined depths to enable said flat parts to connect to one another through
               engagement of said slits with one another in different ways;
               said modeled flat parts for forming said back locomotive including two back locomotive
               walls, a back roof, a link part, a stopper part, a first back locating part, a second
               back locating part, a wheel holder, and two wheels; and said flat parts for forming
               said back locomotive being provided at predetermined positions with slits having predetermined
               depths to enable said flat parts to connect to one another through engagement of said
               slits with one another in different ways; and
               said modeled flat parts for forming each said two-section passenger car including
               two floor parts, two coupling parts, two link parts, two wheel holders, four wheels,
               and a plurality of toy passengers; and said flat parts for forming each said two-section
               passenger car being provided at predetermined positions with slits having predeterm
               depths to enable said flat parts to connect to one another through engagement of said
               slits with one another in different ways;
               whereby a player is trained to employ imagination and thinking ability in the process
               of assembling said a plurality of modeled flat parts into said toy train through engagement
               of said slits with one another in different ways.
 
            2. The three-dimensional built-up toy train as claimed in claim 1, wherein each of said
               wheel holders includes two laterally extended round heads, and said wheels are separately
               rotatably mounted on said round heads, enabling said toy train to move forward with
               said wheels rotating relative to said wheel holders.
 
            3. The three-dimensional built-up toy train as claimed in claim 1, wherein said toy passengers
               are differently designed cartoon figures, or figures of famous performers or politicians.