A vehicle and a vehicle frame structure thereof

Abstract

The utility model provides a kind of car and its frame structure, including swing arm assembly, it includes: first swing arm, it has driving end and first cooperation end, driving end is connected with steering engine;Second swing arm, it has driven end and second cooperation end, driven end is connected with steering drag link;Spring piece, it is connected with second cooperation end, to make second cooperation end under the elastic action of spring piece with first cooperation end always mutually contact cooperation, the contact surface of first cooperation end and second cooperation end is all wave surface and mutually concave-convex cooperation.The transverse direction impact force that the wheel of the application is received after collision is transmitted to second swing arm by steering drag link, since the contact surface of first cooperation end and second cooperation end is all wave surface and mutually concave-convex cooperation, second swing arm will change longitudinal direction displacement under the action of transverse impact force and first cooperation end, and buffer by spring piece, to weaken transverse impact force, make the influence that steering engine connected with first swing arm is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of model cars, specifically relating to a car and its frame structure. Background Technology

[0002] Model cars are produced by scaling down a prototype car, typically by assembling modules such as wheels, body, and drive system onto a frame (or base). Previously, the applicant's Chinese patent CN218553100U, concerning a steering structure, base, and car model, featured a servo motor directly connected to the steering structure without a buffer mechanism. This resulted in the model car's wheels transmitting force to the servo motor upon impact, affecting the servo motor's lifespan. Utility Model Content

[0003] In order to overcome the above-mentioned technical defects, this utility model provides a vehicle and its frame structure, which can solve the technical problem in the prior art that the collision force generated by the wheel being hit affects the servo motor.

[0004] This utility model is implemented according to the following technical solution:

[0005] This utility model provides a vehicle frame structure, which includes a frame body, a servo motor, and a steering tie rod. The frame structure also includes a swing arm assembly, which includes:

[0006] The first swing arm has a drive end and a first mating end, the drive end being connected to the servo motor;

[0007] The second swing arm has a driven end and a second mating end, the driven end being connected to the steering tie rod;

[0008] A spring element is connected to the second mating end so that the second mating end is always in contact with the first mating end under the elastic action of the spring element. The contact surfaces of the first mating end and the second mating end are both wavy surfaces and are mutually concave and convex.

[0009] Compared with the prior art, the lateral impact force of the wheel after the collision is transmitted to the second swing arm through the steering tie rod. Since the contact surfaces of the first and second mating ends are both wavy and mutually concave-convex, the second swing arm will change to longitudinal displacement under the action of the lateral impact force and the first mating end, and will be buffered by the spring, thereby reducing the lateral impact force and reducing the impact on the servo motor connected to the first swing arm.

[0010] In one embodiment, the frame body is provided with a bearing assembly, which includes a fixing post and a bearing sleeved on the fixing post;

[0011] The first mating end is sleeved on the bearing, and the second mating end is sleeved on the fixed column.

[0012] In one embodiment, the bearing assembly further includes a limiting bolt, which is fixed to one end of the fixing post;

[0013] The spring is sleeved on the fixed post, with one end of the spring abutting against the second mating end and the other end of the spring abutting against the head of the limiting bolt.

[0014] In one embodiment, the inner circumferential side of the second mating end is provided with a limiting part and a receiving area, the limiting part protruding towards the fixing post, and the receiving area being located on the side of the limiting part facing the limiting bolt;

[0015] The spring is located within the receiving area, and one end of the spring abuts against the limiting portion.

[0016] In one embodiment, the frame body is provided with an adjustment groove, and the opening direction of the adjustment groove is the same as the length direction of the frame body;

[0017] The bearing assembly also includes a fixing bolt, which passes through the adjustment groove and is fixed to the other end of the fixing column, so that the bearing assembly can be positioned at any position on the adjustment groove.

[0018] In one embodiment, the contact surface of the first mating end is provided with a first crest and a first trough, and the first crest and the first trough are alternately connected to form a first wave surface;

[0019] The contact surface of the second mating end is provided with a second crest and a second trough, and the second crest and the second trough are alternately connected to form a second wave surface;

[0020] When the first mating end and the second mating end are in contact with each other, the first wave crest is set to correspond to the second wave trough, and the first wave trough is set to correspond to the second wave crest.

[0021] In one embodiment, the number of the first peak, the first trough, the second peak, and the second trough are all two.

[0022] In one embodiment, the first mating end is located below the second mating end.

[0023] In one embodiment, the driving end is connected to the servo drive via a first universal joint, and the driven end is connected to the steering tie rod via a second universal joint.

[0024] This utility model also includes a vehicle, which includes the frame structure described above. Attached Figure Description

[0025] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0026] Figure 1 This is a perspective view of the vehicle according to Embodiment 2 of this utility model;

[0027] Figure 2 This is a bottom view of the vehicle according to Embodiment 2 of this utility model;

[0028] Figure 3 This is a cross-sectional view of the vehicle according to Embodiment 2 of this utility model;

[0029] Figure 4 for Figure 3 Enlarged view of A in the middle;

[0030] Figure 5 This is a schematic diagram of the frame structure of Embodiment 2 of this utility model.

[0031] Explanation of reference numerals in the attached figures:

[0032] 10. Frame body, 111. Fixing column, 112. Bearing, 113. Limiting bolt, 114. Fixing bolt, 120. Adjustment groove, 20. Servo, 30. Steering tie rod, 40. Swing arm assembly, 410. First swing arm, 411. Drive end, 412. First mating end, 4121. First crest, 4122. First trough, 420. Second swing arm, 421. Driven end, 422. Second mating end, 4221. Limiting part, 4222. Receiving area, 4223. Second crest, 4224. Second trough, 430. Spring, 50. Wheel. Detailed Implementation

[0033] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0034] To better illustrate this utility model, a further detailed description of this utility model is provided below with reference to the accompanying drawings.

[0035] It should be understood that the described embodiments are merely some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of the embodiments of this application.

[0036] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0037] In the following description, when referring to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims. In the description of this application, it should be understood that the terms "first," "second," "third," etc., are used only to distinguish similar objects and are not necessarily used to describe a specific order or sequence, nor should they be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0039] Example 1

[0040] Combination Figures 1 to 5 As shown, this embodiment provides a vehicle frame structure, which includes a vehicle frame body 10, a servo motor 20, and a steering tie rod 30. The vehicle frame structure also includes a swing arm assembly 40, which includes: a first swing arm 410 having a drive end 411 and a first mating end 412, the drive end 411 being connected to the servo motor 20; and a second swing arm 420 having a driven end 421 and a second mating end 422, the driven end 421 being connected to the steering tie rod 30.

[0041] A spring member 430 is connected to the second mating end 422 so that the second mating end 422 is always in contact with the first mating end 412 under the elastic action of the spring member 430. The contact surfaces of the first mating end 412 and the second mating end 422 are both wavy surfaces and are mutually concave and convex.

[0042] Specifically, the chassis structure of this embodiment is applied to a model car. The servo motor 20 and the steering linkage 30 are both mounted on the chassis body 10. The servo motor 20 is connected to the steering linkage 30 via a first swing arm 410 and a second swing arm 420. The steering linkage 30 is connected to the wheel 50. When it is necessary to control the steering of the wheel 50, the servo motor 20 drives the first swing arm 410 to swing. Due to the elastic action of the spring 430, the second mating end 422 is always in contact with the first mating end 412. The second swing arm 420 swings along with the swing of the first swing arm 410, thereby controlling the steering linkage 30 to swing, thus achieving steering of the wheel 50.

[0043] When the model car's wheel 50 collides during a turn, the lateral impact force on the wheel 50 is transmitted to the second swing arm 420 via the steering tie rod 30. Since the contact surfaces of the first mating end 412 and the second mating end 422 are both wavy and mutually concave-convex, the second swing arm 420, which should originally move laterally, will instead move longitudinally under the combined action of the lateral impact force and the first mating end 412. This applies pressure to the spring 430 and uses the spring 430 for buffering, thereby reducing the lateral impact force. As a result, the impact force transmitted to the first swing arm 410 will be reduced, and the impact force transmitted to the servo motor 20 will also be reduced accordingly, thus reducing the impact on the servo motor 20 and improving its service life.

[0044] In this embodiment, the frame body 10 is provided with a bearing 112 assembly, which includes a fixed post 111 and a bearing 112 sleeved on the fixed post 111. A first mating end 412 is sleeved on the bearing 112, and a first swing arm 410 can rotate around the fixed post 111 under the drive of a servo motor 20. A second mating end 422 is sleeved on the fixed post 111, and a second swing arm 420 can rotate around the fixed post 111 under the action of the first swing arm 410. Furthermore, a gap is maintained between the inner circumference of the second swing arm 420 and the fixed post 111 to avoid direct contact between the second swing arm 420 and the fixed post 111, thus preventing excessive friction and ensuring the rotation of the second swing arm 420 is not affected.

[0045] Furthermore, the bearing 112 assembly also includes a limiting bolt 113, which is fixed to one end of the fixing post 111. The spring 430 is sleeved on the fixing post 111, with one end of the spring 430 abutting against the second mating end 422 and the other end abutting against the head of the limiting bolt 113. The head of the limiting bolt 113 restricts the position of the spring 430, causing it to compress when displaced by the second mating end 422. When the second mating end 422 does not apply pressure to the spring 430, the spring 430 applies an elastic force to the second mating end 422, ensuring that the second mating end 422 and the first mating end 412 are always in contact and engaged, achieving a reset.

[0046] In this embodiment, the inner circumferential side of the second mating end 422 is provided with a limiting part 4221 and a receiving area 4222. The limiting part 4221 protrudes towards the fixing post 111, and the receiving area 4222 is located on the side of the limiting part 4221 facing the limiting bolt 113. The spring member 430 is located within the receiving area 4222, and one end of the spring member 430 abuts against the limiting part 4221. The fixing post 111 and the second mating end 422 limit the position of the spring member 430 in the inward and outward directions using the receiving area 4222, preventing the spring member 430 from shifting, ensuring that the spring member 430 can be sleeved on the fixing post 111, and can be compressed in the longitudinal direction after being pressed by the second mating end 422, and can apply an elastic force to the second mating end 422 in the longitudinal direction. The limiting part 4221 cooperates with the limiting bolt 113 to achieve abutment contact with both ends of the spring member 430.

[0047] In this embodiment, the frame body 10 is provided with an adjustment groove 120, the groove direction of which is the same as the length direction of the frame body 10. The bearing 112 assembly also includes a fixing bolt 114, which passes through the adjustment groove 120 and is fixed to the other end of the fixing post 111, so that the bearing 112 assembly can be positioned at any position on the adjustment groove 120. After the fixing bolt 114 is loosened, the position of the fixing post 111 can be adjusted relative to the driving direction of the adjustment groove 120. After the position of the fixing post 111 is determined, the fixing post 111 can be fixed by tightening the fixing bolt 114. In this embodiment, the position of the fixing post 111 is adjusted in the above manner to adjust the Ackermann angle (the angle formed between the two wheels when the vehicle is turning).

[0048] In this embodiment, the contact surface of the first mating end 412 is provided with a first crest 4121 and a first trough 4122, and the first crest 4121 and the first trough 4122 are alternately connected to form a first wave surface; the contact surface of the second mating end 422 is provided with a second crest 4223 and a second trough 4224, and the second crest 4223 and the second trough 4224 are alternately connected to form a second wave surface; when the first mating end 412 and the second mating end 422 are in contact with each other, the first crest 4121 is set to correspond to the second trough 4224, and the first trough 4122 is set to correspond to the second crest 4223, so that when the first swing arm 410 rotates, it can drive the second swing arm 420 to rotate, and when the second swing arm 420 moves laterally, it can convert the lateral displacement into longitudinal displacement with the help of the first crest 4121.

[0049] Furthermore, the number of the first peak 4121, the first trough 4122, the second peak 4223, and the second trough 4224 are all 2.

[0050] In this embodiment, the first mating end 412 is located below the second mating end 422. Specifically, the upper side of the first mating end 412 is a first wave surface, and the lower side of the second mating end 422 is a second wave surface; the servo motor 20 drives the first swing arm 410 to swing, and the second swing arm 420 swings with the swing of the first swing arm 410, thereby controlling the steering lever 30 to swing.

[0051] When the model car's wheel 50 collides during a turn, the lateral impact force on the wheel 50 is transmitted to the second swing arm 420 via the steering tie rod 30. Since the contact surfaces of the first mating end 412 and the second mating end 422 are both wavy and mutually concave-convex, the second swing arm 420, which should have shifted laterally, shifts longitudinally upward under the combined action of the lateral impact force and the first mating end 412. This applies pressure to the spring 430, which acts as a buffer, thus reducing the lateral impact force. Consequently, the impact force transmitted to the first swing arm 410 is reduced, and ultimately, the impact force transmitted to the servo motor 20 is also reduced, minimizing the impact on the servo motor 20. When the second mating end 422 does not apply pressure to the spring 430, the spring 430 applies a longitudinally downward elastic force to the second mating end 422, ensuring that the second mating end 422 and the first mating end 412 remain in contact and engage, achieving a reset.

[0052] When the model car's wheel 50 collides during a turn, the lateral impact force on the wheel 50 is transmitted to the second swing arm 420 via the steering tie rod 30. Since the contact surfaces of the first mating end 412 and the second mating end 422 are both wavy and mutually concave-convex, the second swing arm 420, which should have lateral displacement, will instead shift longitudinally under the combined action of the lateral impact force and the first mating end 412. This applies pressure to the spring 430 and provides cushioning, thus reducing the lateral impact force. Consequently, the impact force transmitted to the first swing arm 410 is reduced, and ultimately, the impact force transmitted to the servo motor 20 is also reduced, minimizing the impact on the servo motor 20 and extending its service life.

[0053] In this embodiment, the drive end 411 is driven to the servo motor 20 via a first universal joint, and the driven end 421 is connected to the steering tie rod 30 via a second universal joint, so that the servo motor 20 can drive the first swing arm 410 and the second swing arm 420 to drive the steering tie rod 30.

[0054] Example 2

[0055] This embodiment also includes a vehicle that includes the frame structure described above.

[0056] 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 chassis structure comprising a chassis body, a servo motor, and a steering tie rod, characterized in that: The frame structure also includes a swing arm assembly, which comprises: The first swing arm has a drive end and a first mating end, the drive end being connected to the servo motor; The second swing arm has a driven end and a second mating end, the driven end being connected to the steering tie rod; A spring element is connected to the second mating end so that the second mating end is always in contact with the first mating end under the elastic action of the spring element. The contact surfaces of the first mating end and the second mating end are both wavy surfaces and are mutually concave and convex.

2. The frame structure according to claim 1, characterized in that: The frame body is provided with a bearing assembly, which includes a fixing post and a bearing sleeved on the fixing post; The first mating end is sleeved on the bearing, and the second mating end is sleeved on the fixed post.

3. The frame structure according to claim 2, characterized in that: The bearing assembly also includes a limiting bolt, which is fixed to one end of the fixing column; The spring is sleeved on the fixed post, with one end of the spring abutting against the second mating end and the other end of the spring abutting against the head of the limiting bolt.

4. The frame structure according to claim 3, characterized in that: The inner circumferential side of the second mating end is provided with a limiting part and a receiving area. The limiting part protrudes towards the fixing post, and the receiving area is located on the side of the limiting part facing the limiting bolt. The spring is located within the receiving area, and one end of the spring abuts against the limiting portion.

5. The frame structure according to claim 2, characterized in that: The frame body is provided with an adjustment groove, and the opening direction of the adjustment groove is the same as the length direction of the frame body; The bearing assembly also includes a fixing bolt, which passes through the adjustment groove and is fixed to the other end of the fixing column, so that the bearing assembly can be positioned at any position on the adjustment groove.

6. The frame structure according to claim 1, characterized in that: The contact surface of the first mating end is provided with a first crest and a first trough, and the first crest and the first trough are alternately connected to form a first wave surface; The contact surface of the second mating end is provided with a second crest and a second trough, and the second crest and the second trough are alternately connected to form a second wave surface; When the first mating end and the second mating end are in contact with each other, the first wave crest is set to correspond to the second wave trough, and the first wave trough is set to correspond to the second wave crest.

7. The frame structure according to claim 6, characterized in that: There are two of each of the first peak, the first trough, the second peak, and the second trough.

8. The frame structure according to any one of claims 1-7, characterized in that: The first mating end is located below the second mating end.

9. The frame structure according to claim 1, characterized in that: The drive end is connected to the servo motor via a first universal joint, and the driven end is connected to the steering tie rod via a second universal joint.

10. A vehicle, characterized in that, Includes the frame structure as described in any one of claims 1-9.

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