Pre-connected swing arm based on mortise and tenon joint structure

Abstract

The utility model belongs to the technical field of automobile swing arms, and particularly relates to a pre-connected swing arm based on a mortise and tenon joint structure, which comprises a swing arm body, a first connecting end and a second connecting end formed at two ends of the swing arm body, and a bushing mounting end respectively connected to the first connecting end and the second connecting end through the mortise and tenon joint structure, and welding fixation is adopted. According to the swing arm, pre-connection is conducted through the mortise and tenon joint structure before the swing arm body and the lining installation end are welded, the structural strength of the connecting position after welding can be effectively enhanced, the connecting stability between the swing arm body and the lining installation end is improved, and then the using stability of the swing arm is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile swing arm, especially relates to a swing arm based on pre-connection of mortise and tenon structure. BACKGROUND

[0002] The automobile swing arm is mainly used for connecting the vehicle body and the wheel, and can bear various forces and moments from the road during the vehicle driving, including vertical force, lateral force, driving force and braking force, and transmits these forces to the vehicle body, and can also ensure the wheel movement along a certain track, maintain the driving stability and maneuverability of the vehicle, and has an important influence on the comfort and smoothness of the vehicle.

[0003] The traditional swing arm has a whole type and a split type, and the patent application number (2019213593747) of China discloses an automobile swing arm, which comprises a swing arm body and a sleeve, the sleeve is connected to the swing arm body by welding, and the two are welded after positioning by a bayonet, and the structural strength of the connection is poor. UTILITY MODEL CONTENTS

[0004] The utility model aims at the above-mentioned technical problems, and provides a swing arm based on pre-connection of mortise and tenon structure, which improves the connection strength between the bushing mounting end and the swing arm body.

[0005] Therefore, the utility model provides a swing arm based on pre-connection of mortise and tenon structure, which comprises:

[0006] The swing arm body is formed with a first connecting end and a second connecting end at two ends;

[0007] The bushing mounting end is connected to the first connecting end and the second connecting end by the mortise and tenon structure respectively and is fixed by welding.

[0008] In the above technical scheme, further, the mortise and tenon structure comprises:

[0009] The tenon is installed on the bushing mounting end;

[0010] The mortise groove is arranged on the first connecting end and the second connecting end.

[0011] In the above technical scheme, further:

[0012] The first chamfer is arranged on the inner wall of the two sides of the bushing mounting end along the axial direction, and the inclination angle of the first chamfer is 45 DEG.

[0013] In the above technical scheme, further:

[0014] The second chamfer is arranged on the inner wall of the side of the bushing mounting end away from the bushing mounting end along the radial direction, and the inclination angle of the second chamfer is 30 DEG.

[0015] In the above technical solution, further:

[0016] The first connecting end and the second connecting end are provided with a third chamfer along the bush mounting end and close to a side surface of the bush mounting end, and an inclination angle of the third chamfer is 45°.

[0017] In the above technical solution, further:

[0018] The mortise is provided in a U shape along the bush mounting end;

[0019] The tenon includes a U-shaped tongue matched with the U-shaped mortise.

[0020] In the above technical solution, further:

[0021] The U-shaped tongue forms a reinforcing rib on the surface of the swing arm body.

[0022] In the above technical solution, further:

[0023] The swing arm body is provided with a ball head mounting end, and a strip-shaped hole for mounting the ball head is provided on the ball head mounting end.

[0024] The beneficial effects of the present application are as follows:

[0025] 1. The tenon and mortise structure is used for pre-connection before welding between the swing arm body and the bush mounting end, which can effectively improve the structural strength of the connection after subsequent welding, improve the connection strength between the swing arm body and the bush mounting end, and improve the stability of the swing arm.

[0026] 2. The first chamfer, the second chamfer and the third chamfer are provided, which can expand the welding surface, further improve the connection strength after welding, and can embed the welding seam, thereby improving the appearance of the welding seam.

[0027] 3. The mortise is provided in a U shape, and the tenon includes a U-shaped tongue, which can increase the welding length between the surface of the tenon and the inner wall of the mortise, thereby improving the welding connection strength between the tenon and the mortise, and the connection strength and stability between the swing arm body and the bush mounting end. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a structural schematic view of the present application;

[0029] Figure 2 is an exploded view of the present application;

[0030] Figure 3 is a structural schematic view of the present application Figure 2 is an enlarged view of A in the present application;

[0031] The figure is marked as: 1, swing arm body; 2, first connecting end; 3, second connecting end; 4, bush mounting end; 5, mortise and tenon structure; 50, tenon; 51, mortise; 52, U-shaped tongue; 6, first chamfer; 7, second chamfer; 8, third chamfer; 9, ball head mounting end; 10, strip-shaped hole. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present application.

[0033] Embodiment 1:

[0034] The embodiment provides a swing arm based on a mortise and tenon structure pre-connection, comprising:

[0035] The swing arm body 1 is formed with a first connecting end 2 and a second connecting end 3 at both ends;

[0036] The bush mounting end 4 is connected to the first connecting end 2 and the second connecting end 3 through the mortise and tenon structure 5 respectively, and is fixed through welding;

[0037] The swing arm body 1 is in a U-shaped structure.

[0038] It can be seen from the embodiment that the mortise and tenon structure 5 is used for pre-connection before welding between the swing arm body 1 and the bush mounting end 4, which can effectively improve the structural strength of the connection after subsequent welding, improve the connection strength between the swing arm body 1 and the bush mounting end 4, and improve the stability of the swing arm in use;

[0039] And the mortise and tenon structure 5 is used for pre-connection between the swing arm body 1 and the bush mounting end 4, which can also improve the positional accuracy between the swing arm body 1 and the bush mounting end 4 before welding, facilitate the limitation of the bush mounting end 4 and the swing arm body 1, improve the stability and convenience of subsequent welding, and thus ensure the welding quality, improve the production efficiency and product quality.

[0040] Embodiment 2:

[0041] The embodiment provides a swing arm based on a mortise and tenon structure pre-connection, in addition to the technical solutions of the above-mentioned embodiments, further comprising the following technical features, the mortise and tenon structure 5 comprises:

[0042] The tenon 50 is installed on the bush mounting end 4;

[0043] The first connecting end 2 and the second connecting end 3 are both provided with the mortise 51 matched with the tenon 50;

[0044] Meanwhile, the tenon 50 and the bush mounting end 4 can be in an integrated structure.

[0045] It can be seen from the embodiment that the bush mounting end 4 is used for mounting a bush, and the structure generally has a ring shape. Therefore, the tenon 50 is arranged on the bush mounting end 4, the connection between the bush mounting end 4 and the swing arm body 1 is arranged on the swing arm body 1, and the manufacturing of the bush mounting end 4 is facilitated. The swing arm body 1 is more suitable for the opening of the mortise 51, and the manufacturing convenience between the swing arm body 1 and the bush mounting end 4 is improved.

[0046] Embodiment 3

[0047] The embodiment provides a swing arm based on a pre-connection of a mortise and tenon structure, in addition to the technical solutions of the above-mentioned embodiments, and has the following technical features:

[0048] The mortise 51 is provided with a first chamfer 6 on the inner walls of the two sides in the axial direction of the bush mounting end 4, and the inclination angle of the first chamfer 6 is 40°-50°.

[0049] The inclination angle of the first chamfer 6 is specifically 45°.

[0050] It can be seen from the embodiment that the first chamfer 6 is arranged on the inner walls of the two sides in the axial direction of the bush mounting end 4, so that the connection between the tenon 50 and the mortise 51 is not exposed to the outside only with a narrow weld, and the size of the weld exposed to the outside is effectively improved, and the welding of the connection is facilitated, and the connection strength and stability after welding are improved.

[0051] In addition, the first chamfer 6 increases the gap between the tenon 50 and the mortise 51, and the weld after welding is built-in, and the appearance after welding is effectively improved.

[0052] Embodiment 4

[0053] The embodiment provides a swing arm based on a pre-connection of a mortise and tenon structure, in addition to the technical solutions of the above-mentioned embodiments, and has the following technical features:

[0054] The mortise 51 is provided with a second chamfer 7 on the inner wall of the side away from the bush mounting end 4 in the radial direction of the bush mounting end 4, and the inclination angle of the second chamfer 7 is 25°-35°.

[0055] The inclination angle of the second chamfer 7 is specifically 45°.

[0056] It can be seen from the embodiment that the second chamfer 7 is arranged on the inner wall of the mortise 51 on the side of the bushing mounting end 4 away from the bushing mounting end 4 in the radial direction, so that the exposed weld joint of the tenon 50 and the mortise 51 at the connection position is only narrow, thereby effectively increasing the size of the exposed weld joint at the connection position, facilitating welding of the connection position, and improving the connection strength and stability after welding.

[0057] After the first chamfer 6 is arranged, the gap of the connection position between the tenon 50 and the mortise 51 is increased, the weld joint after welding can be arranged inside, and the appearance after welding is effectively improved.

[0058] Embodiment 5

[0059] The embodiment provides a swing arm based on a mortise and tenon structure pre-connection, in addition to the technical solutions of the above-mentioned embodiments, and has the following technical features.

[0060] The third chamfer 8 is arranged on the surface of the first connecting end 2 and the second connecting end 3 on the side of the bushing mounting end 4 close to the bushing mounting end 4 in the radial direction, and the inclination angle of the third chamfer 8 is 40°-50°.

[0061] The inclination angle of the third chamfer 8 is 45°.

[0062] It can be seen from the embodiment that the third chamfer 8 is arranged on the surface of the first connecting end 2 and the second connecting end 3 on the side of the bushing mounting end 4 close to the bushing mounting end 4 in the radial direction, so that the exposed weld joint of the tenon 50 and the mortise 51 at the connection position is only narrow, thereby effectively increasing the size of the exposed weld joint at the connection position, facilitating welding of the connection position, and improving the connection strength and stability after welding.

[0063] After the first chamfer 6 is arranged, the gap of the connection position between the tenon 50 and the mortise 51 is increased, the weld joint after welding can be arranged inside, and the appearance after welding is effectively improved.

[0064] Embodiment 6

[0065] The embodiment provides a swing arm based on a mortise and tenon structure pre-connection, in addition to the technical solutions of the above-mentioned embodiments, and has the following technical features.

[0066] The mortise 51 is arranged in a U shape in the radial direction of the bushing mounting end 4.

[0067] The tenon 50 includes a U-shaped tongue 52 matched with the U-shaped mortise 51.

[0068] It can be seen from the embodiment that by forming the mortise 51 in a U shape and the tenon 50 including the U-shaped tongue 52, the welding length between the surface of the tenon 50 and the inner wall of the mortise 51 can be increased, and thus the welding connection strength between the tenon 50 and the mortise 51 and the connection strength and stability between the swing arm body 1 and the bushing mounting end 4 can be improved;

[0069] Moreover, after the U-shaped mortise 51 cooperates with the U-shaped tongue 52, a better limiting effect can be achieved, and thus the convenience and stability of welding are improved, and thus the welding efficiency and effect are improved.

[0070] Embodiment 7:

[0071] The embodiment provides a swing arm based on a mortise and tenon structure pre-connection, in addition to the technical solutions of the above-mentioned embodiments, and has the following technical features:

[0072] The U-shaped tongue 52 forms a reinforcing rib on the surface of the swing arm body 1.

[0073] Specifically, the two ends of the U-shaped tongue 52 protrude from the surface of the swing arm body 1.

[0074] It can be seen from the embodiment that after the bushing mounting end 4 and the swing arm body 1 are welded, a reinforcing rib can be formed at the connection, and the structural strength of the connection can be effectively improved, and the bending resistance is improved.

[0075] Embodiment 8:

[0076] The embodiment provides a swing arm based on a mortise and tenon structure pre-connection, in addition to the technical solutions of the above-mentioned embodiments, and has the following technical features:

[0077] The swing arm body 1 is provided with a ball head mounting end 9, and a strip-shaped hole 10 for mounting a ball head is formed in the ball head mounting end 9.

[0078] The ball head mounting end 9 and the swing arm body 1 adopt an integrated structure, and the ball head is not shown in the drawings of the present application, which is prior art and is known to those skilled in the art from traditional automobile swing arms, and thus will not be described here.

[0079] It can be seen from the embodiment that the ball head mounting end 9 facilitates the installation and connection between the ball head and the swing arm body 1, and the strip-shaped hole 10 formed in the ball head mounting end 9 can fine-tune the installation position of the ball head on the ball head mounting end 9, and thus the convenience of installing the ball head is effectively improved.

[0080] The embodiments of the present application are described above with reference to the drawings, and the embodiments and features in the embodiments of the present application can be combined with each other without conflict, and the present application is not limited to the above-described specific embodiments, and the above-described specific embodiments are only illustrative but not restrictive, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the purpose of the present application and the scope protected by the claims, and all belong to the protection of the present application.

Claims

1. A pre-connected swing arm based on a mortise and tenon structure, characterized in that, The utility model relates to a swing arm based on mortise and tenon structure pre-connection, including: Swing arm body (1), two ends form first connecting end (2) and second connecting end (3); Bush mounting end (4) is connected in first connecting end (2) and second connecting end (3) respectively through being equipped with mortise and tenon structure (5) and is fixed through welding.

2. The mortise and tenon structure pre-connected swing arm of claim 1, wherein, The mortise and tenon structure (5) includes: Tenon (50) is installed on bush mounting end (4); Wherein, the first connecting end (2) and second connecting end (3) are all set up mortise (51) with tenon (50) insertion on.

3. The swing arm based on mortise and tenon structure pre-connection according to claim 2, wherein: The mortise (51) is provided with a first chamfer (6) on the inner wall of both sides of the bush mounting end (4) in the axial direction, and the inclination angle of the first chamfer (6) is 40°-50°.

4. The swing arm based on mortise and tenon structure pre-connection according to claim 2, wherein: The mortise (51) is provided with a second chamfer (7) on the inner wall of one side of the bush mounting end (4) in the radial direction and away from the bush mounting end (4), and the inclination angle of the second chamfer (7) is 25°-35°.

5. The swing arm based on mortise and tenon structure pre-connection according to claim 2, wherein: The first connecting end (2) and the second connecting end (3) are provided with a third chamfer (8) on the surface of one side of the bush mounting end (4) in the radial direction and close to the bush mounting end (4), and the inclination angle of the third chamfer (8) is 40°-50°.

6. The swing arm based on mortise and tenon structure pre-connection according to claim 3 or 4 or 5, wherein: The mortise (51) is provided in a U-shape in the radial direction of the bush mounting end (4); The tenon (50) includes a U-shaped tongue (52) adapted to the U-shaped mortise (51).

7. The swing arm based on mortise and tenon structure pre-connection according to claim 6, wherein: The U-shaped tongue (52) forms a reinforcing rib on the surface of the swing arm body (1).

8. The swing arm based on mortise and tenon structure pre-connection according to claim 1, wherein: The swing arm body (1) is provided with a ball head mounting end (9), and a strip-shaped hole (10) for mounting a ball head is provided on the ball head mounting end (9).

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