Circuit board fixing device of remote control car

Abstract

The utility model relates to a circuit board fixing device of a remote control car, which comprises a bottom plate, a nut and a wire arranging device, a supporting table is arranged on the bottom plate, a cylinder is arranged on the supporting table, external threads are arranged on the side surface of the upper part of the cylinder, a reducing structure is arranged on the side surface of the lower part of the cylinder, the diameter of the reducing structure is increased from top to bottom, and a threaded hole is formed in the lower end of the nut. The nut is connected with the external thread of the cylinder through the threaded hole, and the wire arranging device is installed on the bottom plate and located on the side face of the cylinder. A mounting hole in a circuit board of the remote control car is embedded into the cylinder, the circuit board is supported by the variable-diameter structure, the circuit board is clamped under transverse adjustment and longitudinal support of the variable-diameter structure, the nut is screwed into the cylinder from the upper end of the cylinder to abut against the circuit board, the circuit board is pressed, and the circuit board is fixed; the wire arranging device can collect and fix wires at one end of the circuit board, prevent the wires from being disordered, avoid damage to a welding position of a wire head and the circuit board when the wires are pulled during left-right steering and running of the remote control car, and avoid pull-apart of the wires.

Description

Technical Field

[0001] The utility model relates to the technical field of remote control cars, and particularly relates to a circuit board fixing device for a remote control car. Background Art

[0002] As a kind of toy rich in operability and interestingness, the remote control car has great charm. Its update and iteration speed is relatively fast, and the products are constantly innovating. The remote control car can not only move forward and backward and turn, but also climb and cross-country, adding infinite fun to players. However, when the remote control car makes movements such as turning left and right and running, the activities of various power components often pull the wires, damaging the welding points between the wire heads and the circuit board, resulting in the need for repair of the remote control car. Content of the Utility Model

[0003] To solve the above technical problems, the utility model provides a circuit board fixing device for a remote control car, which can install and fix the circuit board, and at the same time protect the welding points between the wire heads and the circuit board from being damaged.

[0004] The technical solution of the utility model is: a circuit board fixing device for a remote control car, including a bottom plate and a nut. A support platform is provided on the bottom plate, a cylinder is provided on the support platform, an external thread is provided on the side surface of the upper part of the cylinder, a diameter-changing structure is provided on the side surface of the lower part of the cylinder, and the diameter of the diameter-changing structure becomes larger from top to bottom. A threaded hole is provided at the lower end of the nut, and the nut is connected to the external thread of the cylinder through the threaded hole.

[0005] Further, a round hole is provided at the lower end of the nut, and the threaded hole is located in the round hole.

[0006] Further, an anti-slip structure is provided on the side surface of the nut.

[0007] Further, the diameter-changing structure is composed of multiple arc-shaped plates arranged in a circumferential array around the cylinder. The arc-shaped plates have two right-angled sides and one arc side. The two right-angled sides are respectively located on the side surface of the cylinder and the upper end surface of the support platform, and the arc side is recessed towards the side of the two right-angled sides.

[0008] Further, a heat dissipation groove is provided in the middle of the bottom plate.

[0009] Further, countersunk holes are provided around the bottom plate.

[0010] Further, it further includes a wire organizer, and the wire organizer is installed on the bottom plate and is located on the side surface of the cylinder.

[0011] Further, a horizontally penetrating wire passing hole and a vertically penetrating wire groove are provided on the side surface of the wire organizer. The wire passing hole is communicated with the wire groove, and a fillet is provided at the joint of the wire passing hole and the wire groove. The wire groove is located outside the bottom plate.

[0012] Further, it further includes a pressing plate. A pressing strip corresponding to the width of the wire groove is provided on the side of the pressing plate. The pressing plate can be installed on the side of the wire organizer through screws, and the pressing strip can be embedded into the wire groove.

[0013] Compared with the prior art, the advantages of the present utility model are as follows: The mounting holes on the remote control car circuit board are nested into the cylinder. The mounting holes slide along the cylinder to the variable diameter structure, and the circuit board is supported by the variable diameter structure. Under the lateral adjustment and longitudinal support of the variable diameter structure, the circuit board is clamped. At this time, the nut is screwed into the upper end of the cylinder until the lower end of the nut abuts against the circuit board, and the nut is further tightened to press the circuit board, realizing the fixation of the circuit board; The wire organizer can collect and fix the wires at one end of the circuit board, preventing the wires from being messy, avoiding damage to the soldering joints between the wire heads and the circuit board when the remote control car turns left and right or runs and pulls the wires, and avoiding breaking the wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 is the exploded view of the present utility model;

[0016] Figure 2 is Figure 1 the enlarged view of part A in

[0017] Figure 3 is the sectional view of the nut of the present utility model;

[0018] Figure 4 is the structural schematic diagram of the present utility model;

[0019] Figure 5 is Figure 4 the enlarged view of part B in

[0020] Figure 6 is the structural schematic diagram of the pressing plate of the present utility model.

[0021] Wherein: 1. bottom plate; 101. heat dissipation groove; 102. countersunk head hole; 2. support platform; 3. cylinder; 301. external thread; 4. arc-shaped plate; 5. nut; 501. anti-slip structure; 502. round hole; 503. threaded hole; 6. wire organizer; 601. wire passing hole; 602. wire groove; 7. pressing plate; 701. pressing strip. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] To further elaborate on the technical means and effects adopted by the present utility model to achieve the intended invention purpose, the following will, in conjunction with the accompanying drawings and preferred embodiments, detail the specific implementation manners, structures, features, and effects of the present utility model as follows.

[0023] As Figures 1-6 shown, a circuit board fixing device for a remote control car includes a bottom plate 1 and a nut 5. A support platform 2 is provided on the bottom plate 1, and a cylinder 3 is provided on the support platform 2. An external thread 301 is provided on the side surface of the upper part of the cylinder 3, and a diameter-changing structure is provided on the side surface of the lower part of the cylinder 3. The diameter of the diameter-changing structure becomes larger from top to bottom. A threaded hole 503 is provided at the lower end of the nut 5, and the nut 5 is connected to the external thread 301 of the cylinder 3 through the threaded hole 503. The mounting hole on the remote control car circuit board is nested into the cylinder 3, and the mounting hole slides along the cylinder 3 to the diameter-changing structure, and the circuit board is supported by the diameter-changing structure. Under the lateral adjustment and longitudinal support of the diameter-changing structure, the circuit board is clamped. At this time, the nut 5 is screwed in from the upper end of the cylinder 3 until the lower end of the nut 5 abuts against the circuit board, and the nut 5 is further tightened to press the circuit board, realizing the fixation of the circuit board.

[0024] In the above embodiment, a round hole 502 is provided at the lower end of the nut 5, and the threaded hole 503 is located in the round hole 502. When the aperture of the mounting hole of the circuit board is relatively large, the mounting hole is nested to a relatively deep position of the diameter-changing structure. If an ordinary nut 5 is used, when its lower end abuts against the diameter-changing structure, it still cannot abut against the circuit board, and the circuit board cannot be tightly fixed. By adopting the method of combining the mounting hole and the threaded hole 503 into a stepped hole, it is ensured that the lower end of the nut 5 can extend into the area where the diameter-changing structure is located, ensuring that the nut 5 can abut against the upper end of the circuit board. An anti-slip structure 501 is provided on the side surface of the nut 5, which is convenient for screwing the nut 5. The diameter-changing structure is composed of a plurality of arc-shaped plates 4 arranged in a circumferential array around the cylinder 3. The arc-shaped plate 4 has two right-angled sides and one arc side. The two right-angled sides are respectively located on the side surface of the cylinder 3 and the upper end surface of the support platform 2, and the arc side is recessed towards the side of the two right-angled sides. After the mounting hole of the circuit board is embedded into the diameter-changing structure, the mounting hole is slidably connected to the arc side of the arc-shaped plate 4. As an injection molded part, the arc-shaped plate 4 has a certain deformation ability. After the circuit board is placed on the arc-shaped plate 4, it is further pressed down to cause a certain yield deformation of the arc-shaped plate 4 at the arc side, making the combination of the mounting hole of the circuit board and the diameter-changing structure closer, and further improving the stability of the circuit board installation. A heat dissipation groove 101 is provided in the middle of the bottom plate 1, which provides favorable conditions for the heat dissipation of the circuit board and is also convenient for observing the welding condition at the bottom after the circuit board is welded. Countersunk holes 102 are provided around the bottom plate 1, which are convenient for connecting the bottom plate 1 to the chassis of the toy car.

[0025] The device further includes a wire organizer 6, which is installed on the bottom plate 1. The wire organizer 6 is located on the side of the cylinder 3. The wire organizer 6 can collect and fix the wires at one end of the circuit board, preventing the wires from being messy, and avoiding damage to the welding points between the wire heads and the circuit board when the wires are pulled during the left and right turning and running of the remote control car, and avoiding breaking the wires. A horizontally penetrating wire passing hole 601 and a vertically penetrating wire groove 602 are provided on the side of the wire organizer 6. The wire passing hole 601 communicates with the wire groove 602. A fillet is provided at the joint of the wire passing hole 601 and the wire groove 602 to adapt to the minimum bending radius of the wire and avoid wire damage. The wire groove 602 is located outside the bottom plate 1. The wire diameter corresponds to the wire passing hole 601 and the wire groove 602. After pulling the wire through the wire passing hole 601, the wire located outside the wire organizer 6 is snapped into the wire groove 602, and then the wire head can be peeled and welded. The wire organizer 6 is also equipped with a pressing plate 7. A pressing strip 701 with a width corresponding to the wire groove 602 is provided on the side of the pressing plate 7. The pressing plate 7 can be installed on the side of the wire organizer 6 by screws. The pressing strip 701 can be embedded into the wire groove 602 to press and fix the wire located in the wire groove 602, protecting the welding point between the wire head and the circuit board from being affected by pulling and ensuring the safety of the connection.

[0026] Description of the working mode of the utility model:

[0027] Place the circuit board upright and embed it into the cylinder 3 of the device through the mounting holes. Gently press the circuit board by hand so that the mounting holes are embedded in the stepped structure to achieve preliminary fixation. Screw four nuts 5 into the four cylinders 3 respectively. After the nuts 5 penetrate continuously until they abut against the circuit board, tighten the four nuts 5 in segments in turn so that the mutual acting forces between each nut 5 and the circuit board are basically the same, ensuring that the circuit board is installed stably and will not be deformed due to excessive local stress. After the circuit board is installed, pull the wires of each power component of the remote control car to the wire organizer 6, pass the wires through the wire passing hole 601, and press the wires located outside the wire organizer 6 into the wire groove 602 to ensure that there is enough length of the wire head inside the wire organizer 6. Then check whether the wires will be pulled when each power component makes extreme movements. After confirmation, the pressing plate 7 can be installed outside the wire organizer 6, and the wires are pressed tightly in the wire groove 602 through the pressing strip 701 to prevent the wires inside the wire organizer 6 from being pulled. After the wires are fixed, the wire skin can be peeled off and welded to the circuit board. After the welding is completed, the bottom situation of the circuit board can be observed through the heat dissipation groove 101, and corresponding welding holes can be repaired by welding. After the welding is completed, the bottom plate 1 of the device can be installed into the frame of the remote control car, and the frame is locked at the countersunk holes 102 by screws to achieve the final connection and fixation.

[0028] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A circuit board fixing device for a remote control car, comprising a base plate, a nut and a cable organizer, characterized in that: The base plate is provided with a support platform, the support platform is provided with a cylinder, the side surface of the upper part of the cylinder is provided with an external thread, the side surface of the lower part of the cylinder is provided with a reducing structure, the diameter of the reducing structure increases from top to bottom, the lower end of the nut is provided with a threaded hole, the nut is connected with the external thread of the cylinder through the threaded hole, the cable organizer is installed on the base plate, and the cable organizer is located on the side surface of the cylinder.

2. The circuit board fixing device for a remote control car according to claim 1, characterized in that: A circular hole is arranged at the lower end of the nut, and the threaded hole is located in the circular hole.

3. The circuit board fixing device for a remote control car according to claim 1, characterized in that: The side surface of the nut is provided with an anti-slip structure.

4. The circuit board fixing device for a remote control car according to claim 1, characterized in that: The variable diameter structure is composed of a plurality of arc plates arrayed around the circumference of a cylinder, wherein the arc plate has two right-angled sides and one arc side, wherein the two right-angled sides are respectively located on the side surface of the cylinder and the upper end surface of the support platform, and the arc side is concave toward one side of the two right-angled sides.

5. The circuit board fixing device for a remote control car according to claim 1, characterized in that: A heat dissipation groove is arranged in the middle of the bottom plate.

6. The circuit board fixing device for a remote control car according to claim 1, characterized in that: Countersunk holes are arranged around the bottom plate.

7. The circuit board fixing device for a remote control car according to claim 1, characterized in that: The side of the cable organizer is provided with a horizontally penetrating wire hole and a vertically penetrating wire groove, the wire hole is communicated with the wire groove, the joint of the wire hole and the wire groove is provided with a rounded corner, and the wire groove is located outside the bottom plate.

8. The circuit board fixing device for a remote control car according to claim 7, characterized in that: It also includes a pressing plate, a pressing strip having a width corresponding to the wire groove is provided on the side of the pressing plate, the pressing plate can be installed on the side of the wire organizer by screws, and the pressing strip can be embedded in the wire groove.

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