A steering drive module for a building block car

Abstract

This utility model relates to a steering drive module for a modular car, comprising a steering housing, a motor, a steering control board, lead wires, and a PH2.0 connector. The rear end of the steering housing has a first mounting bracket. The lower part of the first mounting bracket has a first mounting position for mounting the motor. The upper front end of the first mounting bracket has a second mounting position for mounting the steering control board, placing the steering control board above the motor and electrically connecting them. The upper rear end of the first mounting bracket has a wire-holding groove. The lead wire's solder pad is located on the upper surface of the steering control board. One end of the lead wire is soldered to the solder pad, and the middle part of the lead wire is bent and inserted into the wire-holding groove. The other end of the lead wire extends from the rear end of the steering housing and connects to the PH2.0 connector. This application aims to improve the structure of the steering drive module and reduce production costs.

Description

Technical Field

[0001] This utility model relates to the field of toy building blocks, and in particular to a steering drive module for a building block car. Background Technology

[0002] With the improvement of living standards, building block products have become popular in ordinary households, and building block cars that can move are becoming increasingly popular. In order for building block cars to move, it is necessary to assemble a drive module for driving the wheels and a steering drive module for turning the wheels on the building block car.

[0003] Currently, the steering drive module of a typical building block car includes a motor, a reduction gear system, an output gear system, and a control circuit board. Toy cars are generally small in size, which means that the entire steering drive module is installed in a small box. The outer surface of the box needs to be equipped with pin holes to facilitate assembly with other parts of the building block car, so as to output steering power to the wheels. Due to the small size of the box and the design of the motor lead wire solder pads on the back, the soldering and clamping of the wires is too complicated. The internal space is also very compact, making it very inconvenient to clamp and solder the wires. After the lead wires are led out of the box, they are connected to the power supply through contact terminals. The contact terminals use stacked special building block plugs. These contact terminals require special equipment to manufacture, which further increases the production cost of building block cars. Utility Model Content

[0004] The purpose of this utility model is to solve the above-mentioned technical problems and provide a steering drive module for a building block car. This application aims to improve the structure of the steering drive module and reduce production costs.

[0005] A steering drive module for a modular car includes a steering housing, a motor, a steering control board, a lead wire, and a PH2.0 plug. The rear end of the steering housing has a first mounting bracket. The lower part of the first mounting bracket has a first mounting position for mounting the motor. The upper front end of the first mounting bracket has a second mounting position for mounting the steering control board, placing the steering control board above the motor and electrically connecting it to the motor. The rear end of the upper part of the first mounting bracket has a wire-holding groove. The solder pads of the lead wire are located on the upper surface of the steering control board. One end of the lead wire is soldered to the solder pad, and the middle part of the lead wire is bent and inserted into the wire-holding groove. The other end of the lead wire extends from the rear end of the steering housing and connects to the PH2.0 plug.

[0006] According to the steering drive module of the building block car of this application, the solder pads of the lead wires are set on the upper surface of the steering control board, which is located above the motor with the back of the steering control board facing the motor. The upper surface of the steering control board is the front of the steering control board. Setting the solder pads on the front facilitates soldering the lead wires, and the soldered lead wires only need to bend once to be led out from the steering housing to connect to the PH2.0 plug. The power supply of the building block car is connected through the PH2.0 plug (the PH2.0 plug is a strip connector conforming to the PH series standard, with a spacing of 2.0mm, a rated current of 3A, and features stable insertion and anti-misinsertion characteristics). The bend is inserted into the wire slot, so that the lead wires will not swing freely in the steering housing. Using the standardized PH2.0 plug to replace the existing stacked contact terminals reduces the production cost of the product, and the PH2.0 plug has a stable insertion effect, making the connection between the steering drive module and the power supply more stable.

[0007] Furthermore, the rear end of the motor is mounted on the first mounting position, and an electrode plate is provided at the rear end of the motor. A notch is provided on the upper part of the first mounting bracket between the second mounting position and the wire clamping groove, and the position of the notch is opposite to the position of the electrode plate. The notch facilitates the electrical connection between the motor's electrode plate and the steering control board.

[0008] Furthermore, the second mounting position includes an upper clamping arm and a lower clamping plate. The steering control plate is clamped and mounted between the upper clamping arm and the lower clamping plate. The lower clamping plate is provided with a positioning post, and the steering control plate is provided with a positioning hole that mates with the positioning post. The steering control plate is clamped and fixed by the upper clamping arm and the lower clamping plate.

[0009] Furthermore, it also includes a reduction gear system, which is a planetary reduction gear system, and the reduction gear system is mounted on the motor shaft of the motor.

[0010] Furthermore, it also includes an output shaft and an output gear system, the output gear system including an intermediate gear and a limiting gear, the intermediate gear meshing with the output gear of the reduction gear system, the intermediate gear meshing with the limiting gear, and the output shaft being driven and sleeved inside the limiting gear.

[0011] Furthermore, a second mounting bracket is provided inside the front end of the steering housing. The output gear system is rotatably mounted on the second mounting bracket. A limiting block is provided on the second mounting bracket, and a limiting block is provided on the limiting gear to limit the movement of the limiting block. Through mechanical limiting, the excessive steering of the output shaft is prevented from damaging or jamming the wheels of the building block car.

[0012] Furthermore, it also includes an electronic limit plate and a brush plate circuit board. The brush plate circuit board is vertically fixed to the steering control board and electrically connected to it. One end of the electronic limit plate is sleeved on the output shaft and rotates with the output shaft. The other end of the electronic limit plate is provided with a contact point, which elastically abuts against the brush plate circuit board. This dual limitation of mechanical and electronic limits ensures that over-rotation of the output shaft is avoided.

[0013] Furthermore, the gears in both the reduction gear system and the output gear system are 0.5 module gears. Existing steering drive modules only use 0.35 module gears; using 0.5 module gears can increase the steering force output by the steering drive module.

[0014] Furthermore, the steering control board is made of a single-sided half-glass fiberboard. Existing steering control boards generally use bidirectional circuit boards, which are more expensive. Using a single-sided half-glass fiberboard reduces product cost without affecting the functionality of the steering control board.

[0015] Furthermore, the front end face of the steering housing has more than six pin holes. Existing steering drive modules typically only have six pin holes on the front end face; this application provides more than six pin holes, increasing the playability and assembly possibilities of the block car toy. Attached Figure Description

[0016] Figure 1 This is a perspective view of the steering drive module of this utility model.

[0017] Figure 2 This is a perspective view of the steering drive module of this utility model from another angle.

[0018] Figure 3 This is an exploded view of the steering drive module of this utility model.

[0019] Figure 4 This is a perspective view of the steering control panel of this utility model.

[0020] Figure 5 This is a perspective view of the steering control panel of this utility model from another angle.

[0021] Figure 6 This is a perspective view of the first mounting bracket of this utility model.

[0022] Figure 7 This is a perspective view of the electronic limiting plate of this utility model. Detailed Implementation

[0023] The present invention relates to a steering drive module for a building block car, illustrated in conjunction with the accompanying drawings.

[0024] like Figures 1 to 7 The diagram shows a steering drive module for a building block car, including a steering housing 1, a motor 2, a steering control board 3, lead wires 4, and a PH2.0 plug 5. The steering housing 1 includes a front cover 12 and a rear cover 11. The front cover 12 has a buckle 122, and the rear cover 11 has a snap-fit ​​interface 111. The front cover 12 and the rear cover 11 are connected to each other by buckles 122 and snap-fit ​​interfaces 111. The rear cover 11 has a fixing ear 112, which is used to fix the steering drive module to the building block car. The rear end of the steering housing 1 has a first mounting bracket 13, which is located at the rear end of the rear cover 11. The lower part of the first mounting bracket 13 has a first mounting position 131 for mounting the motor 2, and the upper front end of the first mounting bracket 13 has a second mounting position for mounting the steering control board 3, so that the steering control board 3 is placed above the motor 2 and electrically connected to it. The upper rear end of the first mounting bracket 13 has a wire-holding groove 135, and the solder pads of the lead wires 4 are provided with... On the upper surface of the steering control board 3, one end of the lead wire 4 is soldered to the pad. The middle of the lead wire 4 is bent and inserted into the wire slot 135. The other end of the lead wire 4 passes through the rear end of the steering housing 1 and connects to the PH2.0 plug 5. The pad of the lead wire 4 is set on the upper surface of the steering control board 3. The steering control board 3 is set above the motor 2, with the back of the steering control board 3 facing the motor 2. The upper surface of the steering control board 3 is the front of the steering control board 3. Setting the pad on the front makes it easy to solder the lead wire 4. After soldering, the lead wire 4 only needs to be bent once to be led out from the steering housing 1 to connect to the PH2.0 plug 5. The power supply of the building block car is connected through the PH2.0 plug 5. The bend is inserted into the wire slot 135, so that the lead wire 4 will not swing around in the steering housing 1. The standardized PH2.0 plug 5 replaces the existing stacked contact terminals, reducing the production cost of the product. The PH2.0 plug 5 has a stable plugging effect, making the connection between the steering drive module and the power supply more stable.

[0025] like Figures 4 to 6 As shown, the rear end of the motor 2 is mounted on the first mounting position 131. The first mounting position 131 is provided with a plug post 1311. The plug post 1311 is inserted into the plug groove at the rear end of the motor 2, thereby better fixing the motor 2. The rear end of the motor 2 is provided with an electrode plate 21. The upper part of the first mounting bracket 13 is provided with a notch 134 between the second mounting position and the wire clamping groove 135. The position of the notch 134 is opposite to the position of the electrode plate 21. The notch 134 allows the electrode plate 21 to be easily welded to the power line and connected to the steering control board 3, thereby outputting steering under the control of the steering control board 3.

[0026] like Figures 4 to 6As shown, the second mounting position includes an upper clamping arm 133 and a lower clamping plate 132. The steering control plate 3 is clamped and mounted between the upper clamping arm 133 and the lower clamping plate 132. The lower clamping plate 132 is provided with a positioning post 1321, and the steering control plate 3 is provided with a positioning hole 32 that cooperates with the positioning post 1321. Through the clamping of the upper clamping arm 133 and the lower clamping plate 132 and the positioning structure of the positioning post 1321, the steering control plate 3 is stably mounted above the motor 2.

[0027] like Figure 3 As shown, it also includes a reduction gear system 6, which is a planetary reduction gear system 6. The reduction gear system 6 is mounted on the motor shaft 22 of the motor 2. The motor shaft 22 is extended so that all the reduction gears of the system 6 are mounted on the motor shaft 22, thereby solving the coaxiality problem of the planetary reduction gear system 6. The planetary reduction gear system 6 is provided with two layers of planetary reduction gears, thereby better reducing speed and increasing torque, thereby driving the wheels of the building block car to turn.

[0028] like Figures 3 to 5 As shown, it also includes an output shaft 8 and an output gear system 7. The output gear system 7 includes an intermediate gear 71 and a limiting gear 72. The intermediate gear 71 meshes with the output gear of the reduction gear system 6. The intermediate gear 71 meshes with the limiting gear 72. The output shaft 8 is driven and sleeved inside the limiting gear 72. The inside of the limiting gear 72 is a keyed hole. The output shaft 8 is correspondingly provided with a keyway, thereby realizing the transmission connection between the limiting gear 72 and the output shaft 8.

[0029] like Figures 3 to 5 As shown, the steering gearbox 1 has a second mounting bracket 14 inside its front end. The output gear system 7 is rotatably mounted on the second mounting bracket 14. The second mounting bracket 14 has a limiting block 141. The limiting gear 72 has a limiting block 141 that cooperates with the limiting block 141 for limiting.

[0030] like Figures 3 to 5 as well as Figure 7As shown, it also includes an electronic limit plate 9 and a brush plate circuit board 31. The brush plate circuit board 31 is vertically fixed on the steering control board 3 and electrically connected to the steering control board 3. One end of the electronic limit plate 9 is sleeved on the output shaft 8 and rotates with the output shaft 8. The other end of the electronic limit plate 9 is provided with a contact 91. The contact 91 elastically abuts against the brush plate circuit board 31. The electronic limit plate 9 can be fixed to the output shaft 8 by welding or other fixing methods. The end of the output shaft 8 is inserted into the brush plate circuit board 31, so that the contact 91 of the electronic limit plate 9 can elastically abut against the brush plate circuit board 31. The contact 91 also rotates on the brush plate circuit board 31 as the output shaft 8 rotates. Corresponding metal pieces for return to center, left turn, and right turn are provided on the brush plate circuit board 31. The contact 91 and the metal pieces form a detection circuit, so that the brush plate circuit board 31 can know the turning state of the output shaft 8, thus forming an electronic limit structure. Through mechanical limit, the excessive turning of the output shaft 8 is avoided, which would cause the wheels of the block car to break or get stuck.

[0031] Preferably, the gears in the reduction gear system 6 and the output gear system 7 are all gears with a module of 0.5. The gears in the existing steering drive module only use gears with a module of 0.35. Using gears with a module of 0.5 can increase the steering force output by the steering drive module.

[0032] Preferred, such as Figure 4 and Figure 5 As shown, the steering control board 3 is made of a single-sided half-glass fiberboard. The existing steering control board 3 generally uses a two-way circuit board, which is more expensive. Using a single-sided half-glass fiberboard can reduce the cost of the product without affecting the function of the steering control board 3. The power line led out from the electrode plate 21 of the motor 2 can be led out through the notch 134 and connected to the upper surface of the steering control board 3. Therefore, using a single-sided half-glass fiberboard will not affect the function of the steering control board 3.

[0033] like Figure 1 As shown, the front end face of the steering box 1 is provided with more than 6 pin holes 121, that is, the front end face of the front cover 12 is provided with more than 6 pin holes 121. The steering drive module of the prior art is generally provided with only 6 pin holes 121 on the front end face. This application provides 9 pin holes 121, which increases the playability of the building block car toy.

[0034] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A steering drive module for a building block car, characterized in that, The device includes a steering housing, a motor, a steering control board, lead wires, and a PH2.0 plug. The rear end of the steering housing has a first mounting bracket. The lower part of the first mounting bracket has a first mounting position for the motor. The upper front end of the first mounting bracket has a second mounting position for the steering control board, allowing the steering control board to be positioned above the motor and electrically connected to it. The rear end of the upper part of the first mounting bracket has a wire-holding groove. The lead wire's solder pad is located on the upper surface of the steering control board. One end of the lead wire is soldered to the solder pad, and the middle part of the lead wire is bent and inserted into the wire-holding groove. The other end of the lead wire extends from the rear end of the steering housing and connects to the PH2.0 plug.

2. The steering drive module of the building block car according to claim 1, characterized in that, The rear end of the motor is mounted on the first mounting position. The rear end of the motor is provided with an electrode plate. The upper part of the first mounting bracket is provided with a notch between the second mounting position and the wire clamping groove. The position of the notch is opposite to the position of the electrode plate.

3. The steering drive module of the building block car according to claim 1, characterized in that, The second mounting position includes an upper clamping arm and a lower clamping plate. The steering control plate is clamped and mounted between the upper clamping arm and the lower clamping plate. The lower clamping plate is provided with a positioning post, and the steering control plate is provided with a positioning hole that cooperates with the positioning post.

4. The steering drive module of the block car according to claim 1, characterized in that, It also includes a reduction gear system, which is a planetary reduction gear system, and the reduction gear system is mounted on the motor shaft of the motor.

5. The steering drive module of the block car according to claim 4, characterized in that, It also includes an output shaft and an output gear system. The output gear system includes an intermediate gear and a limiting gear. The intermediate gear meshes with the output gear of the reduction gear system. The intermediate gear meshes with the limiting gear. The output shaft is driven and sleeved inside the limiting gear.

6. The steering drive module of the block car according to claim 5, characterized in that, The steering gearbox has a second mounting bracket inside its front end. The output gear system is rotatably mounted on the second mounting bracket. The second mounting bracket has a limiting block, and the limiting gear has a limiting block that cooperates with the limiting block.

7. The steering drive module of the block car according to claim 5, characterized in that, It also includes an electronic limit plate and a brush plate circuit board. The brush plate circuit board is vertically fixed on the steering control board and electrically connected to the steering control board. One end of the electronic limit plate is sleeved on the output shaft and rotates with the output shaft. The other end of the electronic limit plate is provided with a contact point, which elastically abuts against the brush plate circuit board.

8. The steering drive module of the block car according to claim 5, characterized in that, The gears in both the reduction gear system and the output gear system are gears with a module of 0.

5.

9. The steering drive module of the block car according to claim 1, characterized in that, The steering control panel is made of a single-sided half-glass fiberboard.

10. The steering drive module of the building block car according to claim 1, characterized in that, The front end face of the steering gearbox has more than 6 pin holes.

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