Axle with front differential lock and rear differential lock for model car

Abstract

The utility model relates to the field of scaled-down simulation model cars, in particular to a model car axle with a front differential lock and a rear differential lock, which comprises a left axle, a right axle, a differential assembly and a differential lock assembly, a left bevel gear is fixedly arranged on the left axle, a right bevel gear is fixedly arranged on the right axle, and the differential assembly comprises a planet carrier and a planet wheel. The planet carrier is rotationally connected with the left wheel shaft and the right wheel shaft, the planet wheel is rotationally arranged on the planet carrier, the planet wheel is meshed with the left bevel gear and the right bevel gear at the same time, the differential lock assembly comprises a first gear shaper and a second gear shaper, the first gear shaper is slidably arranged on the left wheel shaft, and the second gear shaper is fixedly connected with the planet carrier; and the first insertion teeth can approach the second insertion teeth until the two are clamped. By arranging the differential assembly and the differential lock assembly, the rotating speeds of the inner wheel and the outer wheel of the simulation model vehicle can be different during steering so as to avoid slipping, the trafficability can be kept under complex road conditions, and the simulation degree and the immersion degree of the simulation model vehicle are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of scaled-down simulation model cars, and in particular to a front and rear differential lock type axle for model cars. Background Technology

[0002] Simulation model cars are scale models made strictly according to the shape, structure, color, and even interior parts of real cars. Because they realistically reproduce the main features of the original car and are exquisitely crafted, model cars embody automotive culture and have high collectible value.

[0003] Currently, existing simulation model cars generally use a direct-drive motor with bevel gear transmission to drive a single axle. This results in a large turning radius and makes the inner wheels prone to slipping. Furthermore, some simulation model cars with differentials have poor maneuverability on muddy beaches or rock climbing surfaces, requiring frequent manual intervention to get them out of trouble, thus affecting the player experience. Therefore, it is necessary to improve this structure to overcome these shortcomings. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a front and rear differential lock type axle for model cars. This utility model is achieved through the following technical solution:

[0005] A model car axle with front and rear differential locks includes an axle housing, a left wheel axle, a right wheel axle, a differential assembly, and a differential lock assembly. A left bevel gear is fixedly mounted on the left wheel axle, and a right bevel gear is fixedly mounted on the right wheel axle. The differential assembly includes a planetary carrier and at least two planetary gears. The planetary carrier is rotatably connected to both the left and right wheel axles. The planetary gears are rotatably mounted on the planetary carrier and simultaneously mesh with both the left and right bevel gears. The differential lock assembly includes a first insert and a second insert. The first insert is slidably mounted on the left wheel axle, and the second insert is fixedly connected to the planetary carrier. The first insert can approach the second insert until the two engage.

[0006] In the above technical solution: the axle cover is used to protect the remaining components and is fixed to the chassis of the simulation model car; the left wheel axle is used to drive the left wheel; the right wheel axle is used to drive the right wheel; the differential assembly is used to make the speeds of the left and right wheel axles different; the differential lock assembly is set so that the left and right wheel axles can temporarily maintain the same speed; the planetary carrier, planetary gears, left bevel gear and right bevel gear together constitute a planetary gear train to realize the differential function; the first and second inserts are set so that when the first and second inserts are engaged, the speeds of the planetary carrier and the left bevel gear are forced to become the same, so that the planetary gears only revolve around the sun and do not rotate on their own axis, thereby making the speeds of the right and left bevel gears the same, realizing the differential lock function.

[0007] A further feature of this invention is that the left bevel gear, the right bevel gear, the differential assembly, and the differential lock assembly are all disposed within the axle cover, and the axle cover is fixedly connected to the frame.

[0008] A further feature of this invention is that it includes a drive motor, the output end of which is connected to a drive bevel gear, and a drive gear ring is fixedly connected to the planetary carrier, wherein the drive bevel gear meshes with the drive gear ring.

[0009] In the above technical solution: the drive motor is used to provide power; the drive gear is used to transmit power to the drive gear ring, causing the drive gear ring to rotate; the drive gear ring is used to cause the planetary carrier to rotate.

[0010] A further feature of this invention is that the differential lock assembly includes a shift fork and a steel wire cable. The shift fork is rotatably disposed within the axle cover. A protruding rod is fixedly disposed on the shift fork. An annular groove is provided on the first insert tooth. The protruding rod is engaged with the annular groove. The steel wire cable is fixedly connected to the shift fork.

[0011] In the above technical solution: the shift fork is used to change the position of the first insert tooth so that it can engage or disengage with the second insert tooth; the steel wire pull line is used to pull the shift fork, causing the shift fork to rotate, changing the position of the convex rod, and thus changing the position of the first insert tooth; the annular groove is used to engage with the convex rod.

[0012] A further feature of this invention is that the differential lock assembly also includes a spring, which is sleeved on the steel wire pull line, with one end of the spring contacting the shift fork and the other end contacting the inside of the bridge cover.

[0013] In the above technical solution:

[0014] A further feature of this invention is that the rotation axes of the left bevel gear, the right bevel gear, and the planetary carrier all coincide.

[0015] In the above technical solution, the rotation axes of the left bevel gear, the right bevel gear, and the planetary carrier all coincide, so that the left bevel gear, the right bevel gear, and the planetary gear can maintain meshing.

[0016] This utility model discloses a front and rear differential lock axle for a model car, which, compared with the prior art:

[0017] 1. By setting up a differential component and a differential lock component, this utility model enables the simulation model car to rotate at different speeds of the inner and outer wheels during steering to avoid slippage, and can also maintain passability in complex road conditions, greatly improving the simulation and immersion of the simulation model car. Attached Figure Description

[0018] Figure 1This is a perspective view of the present invention (excluding the bridge cover);

[0019] Figure 2 This is a perspective view of the present invention (including the bridge cover);

[0020] Figure 3 This is a schematic diagram of the differential assembly of this utility model;

[0021] Figure 4 This is a schematic diagram of the differential lock assembly of this utility model.

[0022] The numbers and letters in the diagram represent the following component names: 10-Axle cover; 20-Left wheel axle; 201-Left bevel gear; 30-Right wheel axle; 301-Right bevel gear; 40-Differential assembly; 401-Planetary carrier; 402-Planetary gear; 50-Differential lock assembly; 501-First insert gear; 501a-Ring groove; 502-Second insert gear; 503-Shift fork; 503a-Lead rod; 504-Wire cable; 60-Drive bevel gear; 70-Drive gear ring. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific operation processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0024] like Figure 1-4 As shown, this utility model proposes a front and rear differential lock type axle for a model car, including an axle cover 10, a left wheel axle 20, a right wheel axle 30, a differential assembly 40, and a differential lock assembly 50. A left bevel gear 201 is fixedly mounted on the left wheel axle 20, and a right bevel gear 301 is fixedly mounted on the right wheel axle 30. The differential assembly 40 includes a planetary carrier 401 and at least two planetary gears 402. The planetary carrier 401 is rotatably connected to both the left wheel axle 20 and the right wheel axle 30. The planetary gears 402 are rotatably mounted on the planet carrier 401, and simultaneously mesh with the left bevel gear 201 and the right bevel gear 301. The differential lock assembly 50 includes a first tooth 501 and a second tooth 502. The first tooth 501 is slidably mounted on the left wheel shaft 20, and the second tooth 502 is fixedly connected to the planet carrier 401. The first tooth 501 can approach the second tooth 502 until the two engage. The number of teeth, tip height, and other gear-related dimensions of the left bevel gear 201 and the right bevel gear 301 are identical. Preferably, there are four planetary gears 402. The first tooth 501 includes a disc body and tooth profiles, with the tooth profiles evenly spaced on one side of the disc body. The structure of the second tooth 502 is identical to that of the first tooth 501.

[0025] like Figure 1-4 As shown, the present invention proposes a front and rear differential lock type axle for a model car. The left bevel gear 201, the right bevel gear 301, the differential assembly 40 and the differential lock assembly 50 are all disposed inside the axle cover 10, and the axle cover 10 is fixedly connected to the frame.

[0026] like Figure 1-4 As shown, the present invention discloses a front and rear differential lock type axle for a model vehicle, which further includes a drive motor. The output end of the drive motor is connected to a drive bevel gear 60, and a drive gear ring 70 is fixedly connected to the planetary carrier 401. The drive bevel gear 60 meshes with the drive gear ring 70. The rotation axis of the drive gear ring 70 coincides with the rotation axis of the left bevel gear 201.

[0027] like Figure 1-4 As shown, this utility model proposes a front and rear differential lock type axle for a model car. The differential lock assembly 50 further includes a shift fork 503 and a steel wire cable 504. The shift fork 503 is rotatably disposed within the axle cover 10. A protruding rod 503a is fixedly disposed on the shift fork 503. An annular groove 501a is provided on the first insert tooth 501. The protruding rod 503a is engaged with the annular groove 501a. The steel wire cable 504 is fixedly connected to the shift fork 503. The axle also includes a cable motor, the output end of which is fixedly connected to one end of the steel wire cable 504 to pull the shift fork 503 to rotate.

[0028] like Figure 1-4 As shown, the present invention proposes a front and rear differential lock type axle for a model car. The differential lock assembly 50 further includes a spring. The spring is sleeved on the steel wire pull cable 504, and one end of the spring contacts the shift fork 503, while the other end contacts the inside of the axle cover 10.

[0029] like Figure 1-4 As shown, the present invention proposes a front and rear differential lock type axle for a model vehicle, wherein the rotation axes of the left bevel gear 201, the right bevel gear 301, and the planetary carrier 401 all coincide.

[0030] The working principle of this utility model is as follows:

[0031] a) When turning, the first and second teeth do not engage;

[0032] b) The inner wheel receives greater friction;

[0033] c) Taking a left turn as an example, the rotational speed of the left bevel gear decreases;

[0034] d) The input rotational speed of the driving bevel gear remains constant, thus keeping the planetary carrier rotational speed constant;

[0035] e) The planetary gears maintain a constant orbital speed while their rotational speed increases;

[0036] f) increases the rotational speed of the right bevel gear;

[0037] g) This results in the inner wheel rotating at a lower speed and the outer wheel rotating at a higher speed, reducing slippage;

[0038] h) When traveling on complex road sections;

[0039] i) The cable motor is controlled by a remote control to loosen the steel wire rope;

[0040] j) The spring drives the shift fork to rotate, causing the convex rod to engage the first insert tooth with the second insert tooth;

[0041] k) The planetary gear carrier and the left bevel gear are forced to rotate synchronously, so that the planetary gears do not rotate on their own;

[0042] l) The rotation of the right bevel gear is consistent with that of the left bevel gear, thus achieving differential lock;

[0043] m) Improve the passability of complex road sections.

[0044] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A type of axle with front and rear differential locks for a model car, characterized in that: The system includes a bridge cover (10), a left axle (20), a right axle (30), a differential assembly (40), and a differential lock assembly (50). A left bevel gear (201) is fixedly mounted on the left axle (20), and a right bevel gear (301) is fixedly mounted on the right axle (30). The differential assembly (40) includes a planet carrier (401) and at least two planetary gears (402). The planet carrier (401) is rotatably connected to both the left axle (20) and the right axle (30). The planetary gears (402) are rotatably connected to the planetary carrier (401) and the right axle (30). 02) Rotatably mounted on the planetary carrier (401), and the planetary gear (402) simultaneously engages with the left bevel gear (201) and the right bevel gear (301). The differential lock assembly (50) includes a first tooth (501) and a second tooth (502). The first tooth (501) is slidably mounted on the left wheel shaft (20), and the second tooth (502) is fixedly connected to the planetary carrier (401). The first tooth (501) can approach the second tooth (502) until the two engage.

2. The axle with front and rear differential locks for a model car according to claim 1, characterized in that: The left bevel gear (201), the right bevel gear (301), the differential assembly (40), and the differential lock assembly (50) are all disposed inside the axle cover (10), and the axle cover (10) is fixedly connected to the frame.

3. The axle with front and rear differential locks for a model car according to claim 2, characterized in that: It also includes a drive motor, the output end of which is connected to a drive bevel gear (60), and a drive gear ring (70) is fixedly connected to the planetary carrier (401), the drive bevel gear (60) meshing with the drive gear ring (70).

4. A model car axle with front and rear differential locks according to claim 2 or 3, characterized in that: The differential lock assembly (50) further includes a shift fork (503) and a steel wire pull cable (504). The shift fork (503) is rotatably disposed inside the bridge cover (10). A protruding rod (503a) is fixedly disposed on the shift fork (503). An annular groove (501a) is provided on the first insert tooth (501). The protruding rod (503a) is engaged with the annular groove (501a). The steel wire pull cable (504) is fixedly connected to the shift fork (503).

5. A model car axle with front and rear differential locks according to claim 4, characterized in that: The differential lock assembly (50) also includes a spring, which is sleeved on the steel wire pull cable (504), with one end of the spring in contact with the shift fork (503) and the other end in contact with the inside of the bridge cover (10).

6. A model car axle with front and rear differential locks according to claim 5, characterized in that: The rotation axes of the left bevel gear (201), the right bevel gear (301), and the planet carrier (401) all coincide.

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