Train model gearbox mounting structure

Abstract

The utility model discloses a train model gearbox mounting structure, which comprises a motor mounting seat and a bogie gearbox, and is characterized in that a worm mounting groove (1) is arranged on the motor mounting seat, an insertion port of the gearbox is arranged in the center of the worm mounting groove (1), inner wall surfaces of two sides of the insertion port are arc-shaped, and clamping modules (3) extending inwards are arranged on the inner wall surfaces. The clamping module (3) is in an arc shape, the clamping tenon (2) on the top of the gearbox of the bogie enters the insertion opening and is matched with the clamping module (3) to achieve clamping, and the gearbox can rotate by a certain angle around the worm installation groove (1). The installation of the worm is completely separated from the gear box, and the worm can still keep complete installation and fixation after the gear box is disassembled, so that plug-and-play modular installation of the gear box is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of models, in particular to a chassis mounting structure of a train model. Background Art

[0002] The train toy model realizes steering by means of a bogie at the bottom of the car body. There is a gearbox of the wheel on the bogie, and a series of gear sets in the gearbox transmit the power of the motor in the car body to the wheels. Since the model is very small, the motor cannot be installed horizontally and can only be installed longitudinally along the car body, that is, the motor shaft and the axle are perpendicular. In this way, a worm is required to transmit the power of the motor to the laterally installed wheels.

[0003] The existing installation structure of the train gearbox generally adopts the installation structure described in JP3181567B2, which discloses a specific transmission structure of the model train. One end of the worm is to be connected to the motor shaft, the worm body is to be installed at the top of the gearbox, and an insertion hole for the gearbox is opened at both ends of the motor mounting seat. The defect of this structure is that the assembly is relatively difficult. The worm needs to be installed after connecting the bogie and the motor mounting seat first. When the bogie has problems and needs to be disassembled, the worm will also fall off. Summary of the Invention

[0004] The technical problem to be solved by the present invention: Aiming at the problem that the installation of the worm of the existing train model depends on the installation of the gearbox to be completed, a modular gearbox installation structure is provided to avoid the worm falling off due to the disassembly of the gearbox.

[0005] The utility model adopts the following technical solutions:

[0006] A train model gearbox installation structure includes a motor mounting seat and a bogie gearbox. There is a worm installation groove 1 on the motor mounting seat. There is an insertion port for the gearbox in the center of the worm installation groove 1. The inner wall surfaces on both sides of the insertion port are arc-shaped and there are inwardly extending clamping modules 3 on the inner wall surfaces. The clamping modules 3 are arc-shaped. The top tenon 2 of the bogie gearbox enters the insertion port and cooperates with the clamping modules 3 to achieve clamping. The gearbox can rotate a certain angle around the worm installation groove 1.

[0007] The clamping module 3 is an arc-shaped stepped surface, the upper surface is flat, and the lower surface is inclined.

[0008] The tenon 2 can be inserted into the clamping module 3 to complete the clamping. The tenon head of the tenon 2 is on the outside of the tenon body and the outer contour of the tenon head is arc-shaped. There is an arc-shaped reinforcing rib at the waist of the tenon 2 for cooperating with the inner wall surface of the insertion port of the gearbox. There is a limiting plate at the bottom of the tenon 2 for limiting the insertion depth of the tenon 2.

[0009] The cooperation between the clamping module 3 and the tenon 2 satisfies a certain angular swing range in the horizontal and vertical directions in the clamped state.

[0010] There are two tenons 2, which are respectively erected on the upper end faces on both sides of the bogie gearbox. There are limit plates on both sides of the bogie gearbox, and the limit plates are used to cooperate with the lower bottom surface of the worm mounting groove 1.

[0011] On the upper surface of the center of the limit plate, there is a laterally arranged convex part 4, and the upper surface of the convex part 4 is a cylindrical surface.

[0012] At the bottom of the motor mounting seat, there is a mounting groove for accommodating the upper structure of the gearbox. The center of the mounting groove is circular, and there are fan-shaped extension parts on both sides, which can meet the swinging of the gearbox within a certain range.

[0013] The utility model has the following beneficial effects:

[0014] 1. The installation of the worm is completely separated from the gearbox. After the gearbox is disassembled, the worm can still maintain its complete installation and fixation, realizing the modular installation of the gearbox with plug-and-play.

[0015] 2. The tenon is only restricted in the radial degree of freedom. The gearbox can swing left and right at a large angle on the horizontal plane. In addition, the convex part between the upper end face of the gearbox and the lower end face of the motor mounting seat can prevent the two end faces from fitting. When there are uphill and downhill on the track, due to the line contact of the cylindrical surface between the two end faces, the gearbox can also easily achieve a certain degree of pitching compared with the car body. Description of the Drawings

[0016] Figure 1 It is a perspective view in the top view direction of the cooperation between the gearbox and the motor mounting seat. One bogie is not drawn in the figure to facilitate the display of the structure of the mounting opening.

[0017] Figure 2 It is the box structure diagram of the bogie gearbox.

[0018] Figure 3 It is a partial enlarged view of the gearbox insertion opening of the motor mounting seat.

[0019] Figure 4 It is a perspective view in the bottom view direction of the motor mounting seat. One gearbox is not drawn in the figure to facilitate the display of the structure of the mounting opening. Specific Embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0021] Embodiment: As Figure 1, in the center of the motor mounting seat is a longitudinally arranged motor mounting groove, and there is a worm mounting groove 1 at each end. There is an insertion opening for the gearbox in the center of the worm mounting groove 1. The inner wall surfaces on both sides of the worm mounting groove 1 are arc-shaped, and there are arc-shaped clamping modules on the inner wall surfaces. The clamping module 3 is an arc-shaped stepped surface, with a flat upper surface and an inclined lower surface. The tenon 2 at the top of the bogie gearbox enters the insertion opening and cooperates with the clamping module 3 to achieve clamping. The tenon 2 can rotate around the worm mounting groove 1 by a certain angle. The cooperation between the clamping module 3 and the tenon 2 satisfies a certain angular swing range in the transverse and longitudinal directions in the clamped state.

[0022] The tenon 2 and the gearbox are integrally formed. There is an exposed window for the input gear at the upper end of the gearbox. There are two tenons 2, which are respectively erected on both sides of the gear exposure window of the bogie gearbox. There are limiting plates on both sides of the gearbox, and the limiting plates are used to cooperate with the lower bottom surface of the worm mounting groove 1.

[0023] There is a transversely arranged convex part 4 on the upper surface of the center of the limiting plate. The upper surface of the convex part 4 is a cylindrical surface. The existence of the cylindrical surface can make the limiting plate in line contact with the lower bottom surface of the worm mounting groove 1, and pitching can be achieved when disturbed. This design can adapt to the slope of the railway track.

[0024] There is an installation groove at the bottom of the motor mounting seat to accommodate the upper structure of the gearbox. The center of the installation groove is circular, and there are fan-shaped extension parts on both sides to meet the certain amplitude swing of the gearbox.

Claims

1. A mounting structure for a gearbox of a train model, comprising a motor mounting base and a bogie gearbox, characterized in that: There is a worm installation groove (1) on the motor mounting base. There is an insertion opening for the gearbox in the center of the worm installation groove (1). The inner wall surfaces on both sides of the insertion opening are arc-shaped and there are snap modules (3) extending inwards on the inner wall surfaces. The snap modules (3) are arc-shaped. The top tenons (2) of the bogie gearbox enter the insertion opening and cooperate with the snap modules (3) to achieve snap connection, and the gearbox can rotate a certain angle around the worm installation groove (1).

2. The installation structure of the gearbox of the train model according to claim 1, characterized in that: The snap module (3) is an arc-shaped stepped surface, with a flat upper surface and an inclined lower surface.

3. The installation structure of the gearbox of the train model according to claim 2, characterized in that: The tenon (2) can be inserted into the snap module (3) to complete the snap connection. The tenon head of the tenon (2) is on the outside of the tenon body and the outer contour of the tenon head is arc-shaped. There is an arc-shaped reinforcing rib at the waist of the tenon (2) for cooperation with the inner wall surface of the insertion opening of the gearbox. There is a limiting plate at the bottom of the tenon (2) for limiting the insertion depth of the tenon (2).

4. The installation structure of the gearbox of the train model according to claim 3, characterized in that: The cooperation between the snap module (3) and the tenon (2) satisfies a certain angular swing range in the horizontal and vertical directions in the snap connection state.

5. The installation structure of the gearbox of the train model according to claim 4, characterized in that: There are two tenons (2), which are respectively erected at the upper ends on both sides of the bogie gearbox. There are limiting plates on both sides of the bogie gearbox, and the limiting plates are used for cooperation with the lower bottom surface of the worm installation groove (1).

6. The installation structure of the gearbox of the train model according to claim 5, characterized in that: There is a convex portion (4) arranged horizontally on the upper surface of the center of the limiting plate, and the upper surface of the convex portion (4) is a cylindrical surface.

7. The installation structure of the gearbox of the train model according to any one of claims 1-5, characterized in that: There is an installation groove for accommodating the upper structure of the gearbox at the bottom of the motor mounting base. The center of the installation groove is circular, and there are fan-shaped extension parts on both sides, which satisfy a certain amplitude of swing of the gearbox.

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