Gear box input shaft

Abstract

The utility model belongs to the technical field of input shafts, and particularly relates to a gear box input shaft which comprises a first shaft body, a second shaft body and a third shaft body. The first shaft body is provided with a connecting hole, the second shaft body is provided with a connecting rod, the connecting rod extends into the connecting hole and is fused with the connecting hole to form an integrated structure, and the first shaft body and the second shaft body can be customized according to the strength required by a working part and are integrally fixed together in a fusion welding manner; and therefore, the overall structural strength is improved under the condition that the overall strength is not affected, and the service life of the input shaft is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of input shafts, and in particular relates to an input shaft of a gear box. Background Art

[0002] In the automotive industry, the input shaft, also known as the "first shaft," is a shaft located in the gearbox (gearbox) and connected to the clutch. Its function is to input the power of the car engine into the gearbox through the control of the clutch.

[0003] During use, the different connections and functions between different parts of the input shaft often lead to different strength requirements for the materials required for each part. In the preparation process, the existing input shaft is usually made of the same material through turning and forming it as a whole. In order to enable one-piece turning, it is generally prepared by using a material that is closest to the strength required by each part of the input shaft. This results in the input shaft being unable to achieve the optimal working state during use. Therefore, we have specially designed a gearbox input shaft. Utility Model Content

[0004] The purpose of the utility model is to provide a gearbox input shaft to achieve the effect of high structural strength in response to the above-mentioned technical problems.

[0005] In view of this, the present invention provides a gearbox input shaft, comprising:

[0006] A first shaft body, wherein a connecting hole is provided on the first shaft body;

[0007] The second shaft body is provided with a connecting rod, which extends into the connecting hole and is melted with the connecting hole to form an integrated structure.

[0008] In the above technical solution, further, the connecting hole includes:

[0009] The feed end, the wall surface of the feed end is provided with threads;

[0010] The welding chamber is arranged inside the feeding end, and one end of the welding chamber opening cooperates with the connecting rod and is connected to the end surface of the second shaft body;

[0011] The flow channel is arranged between the feed end and the welding cavity.

[0012] In the above technical solution, further comprising:

[0013] The end cover is arranged on the opening of the connecting hole.

[0014] In the above technical solution, further comprising:

[0015] A boss, the boss being arranged on the end surface of the second shaft body at the bottom of the connecting rod;

[0016] The boss is hexagonal, the cross section of the welding cavity is correspondingly set to be hexagonal, and the boss wall is in contact with each other.

[0017] In the above technical solution, further comprising:

[0018] The first groove is arranged on the peripheral side wall surface of the connecting rod.

[0019] In the above technical solution, further comprising:

[0020] The second groove is arranged on the inner wall surface of the welding cavity.

[0021] In the above technical solution, further comprising:

[0022] The hoop is arranged outside the matching surface between the first shaft body and the second shaft body.

[0023] In the above technical solution, further comprising:

[0024] The bezel groove includes a first bezel groove and a second bezel groove, the first bezel groove is provided on the first shaft body, and the second bezel groove is provided on the second shaft body;

[0025] The band is located outside the first embedding groove and the second embedding groove.

[0026] The beneficial effects of the present invention are as follows: the first shaft body and the second shaft body can be customized according to the required strength of the working parts, and can be fixed together as a whole by welding, thereby improving the overall structural strength without affecting the overall strength and extending the service life of the input shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of the utility model;

[0028] Figure 2 It is a cross-sectional view of the utility model;

[0029] Figure 3 It is a structural explosion diagram of the utility model;

[0030] Figure 4 This is a schematic diagram of the first shaft at one end of the welding cavity opening of the present invention;

[0031] The markings in the figure are as follows: 1. first shaft; 11. connecting hole; 111. feed end; 112. welding chamber; 113. flow channel; 2. second shaft; 21. connecting rod; 3. end cover; 4. boss; 5. first groove; 6. second groove; 7. hoop; 81. first embedding groove; 82. second embedding groove; 9. welding material. DETAILED DESCRIPTION

[0032] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0033] Example 1:

[0034] This embodiment provides a gearbox input shaft, comprising:

[0035] A first shaft body 1, wherein a connecting hole 11 is provided on the first shaft body 1;

[0036] The second shaft body 2 is provided with a connecting rod 21 . The connecting rod 21 extends into the connecting hole 11 and is melted with the connecting hole 11 to form an integral structure.

[0037] It can be seen from this embodiment that a gearbox input shaft includes a first shaft body 1 and a second shaft body 2;

[0038] A connecting hole 11 is formed on the first shaft body 1 and passes through the first shaft body 1. A connecting rod 21 is formed on the second shaft and extends to the first shaft body 1. A tooth surface is formed on the outer wall surface of the second shaft body 2.

[0039] When in use, the connecting rod 21 is fixed into the connecting hole 11 by injecting molten metal into the connecting hole 11, so that the first shaft body 1 and the second shaft body 2 form an integrated structure;

[0040] The first shaft body 1 and the second shaft body 2 can be customized according to the required strength of the working parts and fixed together as a whole by welding, thereby improving the overall structural strength without affecting the overall strength and extending the service life of the input shaft.

[0041] Example 2:

[0042] This embodiment provides a gearbox input shaft, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0043] The connecting hole 11 includes:

[0044] Feed end 111;

[0045] The welding chamber 112 is provided inside the feeding end 111 , and one open end of the welding chamber 112 cooperates with the connecting rod 21 and is connected to the end surface of the second shaft body 2 ;

[0046] The flow channel 113 is provided between the feed end 111 and the welding cavity 112 .

[0047] As can be seen in this embodiment, the connection hole 11 includes a feed end 111, a welding cavity 112 and a flow channel 113;

[0048] The molten material extends into the feed end 111 through the tubular injection structure and is fed into the welding chamber 112 through the flow channel 113 to be welded with the connecting rod 21 .

[0049] Example 3:

[0050] This embodiment provides a gearbox input shaft, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0051] The end cover 3 is arranged on the feed end 111 of the connecting hole 11;

[0052] The wall surface of the feed end 111 is provided with threads.

[0053] It can be seen from this embodiment that the end cover 3 is installed on the outer opening of the connecting hole 11, which can seal and fill the port position of the feed end 111, and isolate the molten part from contact with the external environment. Furthermore, the end cover 3 and the feed end 111 are fixed by a threaded connection.

[0054] Example 4:

[0055] This embodiment provides a gearbox input shaft, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0056] Boss 4, boss 4 is provided on the end surface of the second shaft body 2 at the bottom of the connecting rod 21;

[0057] The boss 4 is hexagonal, the cross section of the welding cavity 112 is correspondingly set to be hexagonal, and the wall surface of the boss 4 is in contact with it.

[0058] It can be seen from this embodiment that the boss 4 is formed at the bottom of the connecting rod 21. When in use, the boss 4 can fit into the wall of the welding cavity 112 to position the connecting rod 21, thereby preventing the wall of the connecting rod 21 and the wall of the welding cavity 112 from offset due to eccentricity, which helps to improve coaxiality.

[0059] Example 5:

[0060] This embodiment provides a gearbox input shaft, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0061] The first groove 5 is provided on the peripheral side wall surface of the connecting rod 21 .

[0062] It can be seen from this embodiment that by setting the first groove 5 on the circumferential side wall of the connecting rod 21, the welding material 9 can form a hooking structure with the first groove 5 after injection, thereby making the welding structure more stable and improving the connection strength between the first shaft body 1 and the second shaft body 2.

[0063] Example 6:

[0064] This embodiment provides a gearbox input shaft, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0065] The second groove 6 is provided on the inner wall surface of the welding cavity 112 .

[0066] It can be seen from this embodiment that by setting a second groove 6 on the inner wall surface of the welding cavity 112, the welding material 9 can form a hooking structure with the second groove 6 after injection, thereby making the welding structure more stable and improving the connection strength between the first shaft 1 and the second shaft 2.

[0067] Example 7:

[0068] This embodiment provides a gearbox input shaft, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0069] The band 7 is arranged outside the matching surface between the first shaft body 1 and the second shaft body 2.

[0070] It can be seen from this embodiment that the band 7 is installed on the outer mating surfaces of the first shaft body 1 and the second shaft body 2. By providing the band 7, the mating surfaces of the first shaft body 1 and the second shaft body 2 can be sealed to play a protective role.

[0071] Example 8:

[0072] This embodiment provides a gearbox input shaft, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0073] The bezel grooves include a first bezel groove 81 and a second bezel groove 82 . The first bezel groove 81 is provided on the first shaft body 1 , and the second bezel groove 82 is provided on the second shaft body 2 .

[0074] The band 7 is located outside the first embedding groove 81 and the second embedding groove 82 .

[0075] It can be seen from this embodiment that the embedding groove includes a first embedding groove 81 and a second embedding groove 82. The first embedding groove 81 is formed on the outside of the matching surface between the first shaft body 1 and the second shaft body 2, and the second shaft body 2 is formed on the outside of the matching surface between the second shaft body 2 and the first shaft body 1. The first embedding groove 81 and the second embedding groove 82 are provided to facilitate the connection of the hoop 7.

[0076] The embodiments of the present application are described above in conjunction with the accompanying drawings. Unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A gearbox input shaft, characterized in that: include: A first shaft body (1), wherein the first shaft body (1) is provided with a connecting hole (11); A second shaft body (2), wherein a connecting rod (21) is provided on the second shaft body (2), and the connecting rod (21) extends into the connecting hole (11) and is melted with the connecting hole (11) to form an integral structure.

2. A gearbox input shaft according to claim 1, characterized in that: The connecting hole (11) comprises: A feed end (111), wherein the wall surface of the feed end (111) is provided with threads; A welding cavity (112), wherein the welding cavity (112) is arranged inside the feed end (111), and an open end of the welding cavity (112) cooperates with the connecting rod (21) and is connected to the end surface of the second shaft body (2); A flow channel (113), wherein the flow channel (113) is arranged between the feed end (111) and the welding cavity (112).

3. A gearbox input shaft according to claim 2, characterized in that include: An end cover (3) is provided on the opening of the connecting hole (11).

4. A gearbox input shaft according to claim 3, characterized in that include: A boss (4), wherein the boss (4) is arranged on the end surface of the second shaft body (2) at the bottom of the connecting rod (21); The boss (4) is hexagonal, the cross section of the welding cavity (112) is correspondingly configured to be hexagonal, and the wall surface of the boss (4) is in contact with the wall surface.

5. A gearbox input shaft according to claim 4, characterized in that include: A first groove (5) is provided on the peripheral side wall surface of the connecting rod (21).

6. A gearbox input shaft according to claim 5, characterized in that include: A second groove (6), wherein the second groove (6) is arranged on the inner wall surface of the welding cavity (112).

7. A gearbox input shaft according to claim 6, characterized in that include: A hoop (7) is provided on the outside of the matching surface between the first shaft body (1) and the second shaft body (2).

8. The gearbox input shaft according to claim 7, characterized in that include: The embedding groove comprises a first embedding groove (81) and a second embedding groove (82), wherein the first embedding groove (81) is provided on the first shaft body (1), and the second embedding groove (82) is provided on the second shaft body (2); Wherein, the hoop (7) is outside the first embedding groove (81) and the second embedding groove (82).

Images