Differential spider convenient to maintain

Abstract

The differential spider convenient to maintain comprises an axis ring and shaft neck parts, four positioning grooves are formed in each of the upper surface and the lower surface of the axis ring, each shaft neck part comprises an upper shaft part and a lower shaft part, and the upper shaft parts and the lower shaft parts are provided with first extending parts and second extending parts which are matched with the positioning grooves correspondingly; a connecting protruding block is arranged on the upper shaft part, and an embedding opening is formed in the lower shaft part, so that when the connecting protruding block and the embedding opening are connected in a buckled mode, the upper shaft part and the lower shaft part can be installed on or detached from the axis ring through matching of the first extending part and the second extending part with the positioning groove, and rapid and convenient installation or detachment of the shaft neck part is achieved; and the problems that more unnecessary loss is caused and the maintenance cost is greatly improved due to the fact that the shaft center ring and the shaft neck in the universal joint pin of the commonly used differential mechanism are of an integrated structure and the universal joint pin can be maintained only by replacing the whole universal joint pin once the universal joint pin is locally damaged are solved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of power accessories, in particular to a differential cross shaft convenient to maintain. BACKGROUND

[0002] The differential cross shaft is one of important components of a differential, and the differential cross shaft comprises an axle ring and axle journals arranged on the outer side of the side wall of the axle body. The axle journals are most prone to damage during use. Since the axle ring and the axle journals of the commonly used differential cross shaft are in an integral structure, once local damage occurs, the entire differential cross shaft has to be replaced for maintenance, which causes more unnecessary loss and greatly increases the maintenance cost. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at solving the above-mentioned problems and provides a differential cross shaft convenient to maintain.

[0004] The technical scheme of the application is implemented as follows:

[0005] The application provides a differential cross shaft convenient to maintain, which comprises an axle ring and an axle journal part. The axle journal part is provided with four groups of axle journals which are evenly distributed around the axle ring. The upper and lower surfaces of the axle ring are each provided with four positioning grooves which are opposite to each other in pairs. Each group of axle journals comprises an upper axle piece and a lower axle piece. The upper axle piece and the lower axle piece are both semicylinders with the same diameter. The upper axle piece and the lower axle piece are respectively provided with a first extension part and a second extension part at the positions of the two symmetrically arranged positioning grooves. The abutting surface of the upper axle piece is provided with a connecting protrusion, and the abutting surface of the lower axle piece is provided with a matching hole which is adapted to the connecting protrusion. The first extension part and the second extension part are respectively embedded in or separated from the positioning grooves through the buckling connection between the connecting protrusion and the matching hole.

[0006] When the connecting protrusion and the matching hole are buckled, the first extension part and the second extension part are respectively embedded in the two symmetrically arranged positioning grooves, and the upper axle piece and the lower axle piece are installed on the axle ring and abut to form a cylinder.

[0007] When the connecting protrusion and the matching hole are separated from each other, the first extension part and the second extension part are respectively separated from the two symmetrically arranged positioning grooves, and the upper axle piece and the lower axle piece can be respectively detached from the axle ring.

[0008] In an embodiment, the fixing member comprises a screw head, a screw rod and a nut, the screw head is located at one end of the screw rod, a through hole of a vertical axis ring is formed in the center of the two symmetrically arranged positioning grooves, the mounting holes are arranged on the first extension part and the second extension part, one end of the mounting hole on the first extension part is formed with a circular groove matched with the screw head, one end of the mounting hole on the second extension part is formed with a groove matched with the size of the nut, when the connecting protrusion and the embedded port are buckled, the screw head is located in the circular groove, the nut is installed in the groove, and the screw rod is screwed with the nut through the mounting hole and the through hole.

[0009] In an embodiment, the depth of the circular groove is equal to the thickness of the screw head, and the depth of the groove is equal to the thickness of the nut.

[0010] In an embodiment, the screw head is a hexagonal screw head, and the screw rod is a half-thread structure.

[0011] In an embodiment, the screw head and the screw rod are integrally formed.

[0012] In an embodiment, the arc-shaped surfaces of the upper shaft member and the lower shaft member are arranged with clamping grooves near one end of the shaft ring.

[0013] The advantages or beneficial effects of the above technical solutions at least include:

[0014] The differential cross axle convenient to maintain comprises a shaft ring, a shaft neck part and a fixing member, the shaft ring is arranged with four positioning grooves arranged in pairs on the upper surface and the lower surface, the shaft neck part is arranged on the shaft ring, the fixing member is arranged on the shaft neck part, the fixing member comprises a screw head, a screw rod and a nut, the screw head is located at one end of the screw rod, a through hole of a vertical axis ring is formed in the center of the two symmetrically arranged positioning grooves, the first extension part and the second extension part are arranged on the upper shaft member and the lower shaft member, the mounting holes are arranged on the first extension part and the second extension part, one end of the mounting hole on the first extension part is formed with a circular groove matched with the screw head, one end of the mounting hole on the second extension part is formed with a groove matched with the size of the nut, when the connecting protrusion and the embedded port are buckled, the screw head is located in the circular groove, the nut is installed in the groove, and the screw rod is screwed with the nut through the mounting hole and the through hole. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings illustrate exemplary embodiments of the present application and together with the description, explain the principles of the application. These drawings are included to provide a further understanding of the present application and are incorporated in and constitute a part of this specification.

[0016] Figure 1 An exploded structural schematic view of one perspective of an embodiment of the present application is shown;

[0017] Figure 2 An exploded structural schematic view of another perspective of an embodiment of the present application is shown.

[0018] Figure 3 The overall structural schematic diagram of the embodiment of the application is shown;

[0019] Figure 4 The structural schematic diagram of the shaft center ring in the embodiment of the application is shown;

[0020] Reference signs: 1, shaft center ring; 11, positioning groove; 111, through hole;

[0021] 2, shaft neck part; 21, upper shaft part; 211, first extension part; 2111, circular groove; 212, connecting protrusion; 22, lower shaft part; 221, second extension part; 2211, recess; 222, fitting opening; 23, mounting hole; 24, clamping groove;

[0022] 3, fixing part; 31, screw head; 32, screw rod; 33, nut. DETAILED DESCRIPTION

[0023] Embodiments of the application will be described in more detail below with reference to the drawings. Although certain embodiments of the application are shown in the drawings, it should be understood that the application can be implemented in various forms and should not be interpreted as being limited to the embodiments set forth herein, but rather these embodiments are provided for more thorough and complete understanding of the application. It should be understood that the drawings and embodiments of the application are only for illustrative purposes and are not intended to limit the scope of protection of the application.

[0024] It should be noted that the embodiments and features in the embodiments of the application can be combined with each other without conflict. The application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0025] It should be understood that the term "comprising" and variations thereof used in this document are open-ended, i.e., "including but not limited to". The term "based on" is "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Related definitions of other terms will be given in the following description. It should be noted that the "first", "second", etc. concepts mentioned in the application are only used to distinguish different devices, modules or units, and are not intended to limit the functions performed by these devices, modules or units or the mutual dependency relationship.

[0026] It should be noted that the modification of "one" and "several" mentioned in the application is illustrative and not restrictive, and those skilled in the art should understand that unless the context clearly indicates otherwise, it should be understood as "one or more".

[0027] Names of messages or information exchanged between multiple devices in the embodiments of the present application are only for illustrative purposes, and are not intended to limit the scope of the messages or information.

[0028] With reference to Figures 1-4 The utility model discloses a differential spider axle convenient to maintain, including axle core ring 1 and journal part 2, four groups are arranged around the axle core ring 1 evenly and are respectively surrounded, the upper and lower surfaces of axle core ring 1 are equipped with four locating grooves 11 that are two two opposite, every group journal part 2 includes upper shaft piece 21 and lower shaft piece 22, and upper shaft piece 21 and lower shaft piece 22 are semicylinders of same diameter, and upper shaft piece 21 and lower shaft piece 22 are respectively provided with first extension 211 and second extension 221 in the position of corresponding two symmetrical locating grooves 11, and the abutment surface of upper shaft piece 21 is provided with connecting lug 212, the abutment surface of lower shaft piece 22 is provided with with the matching mouth 222 of connecting lug 212, and the first extension 211 and the second extension 221 are respectively embedded or away from locating groove 11 through the buckling connection between connecting lug 212 and matching mouth 222, when needing to maintain, replace journal part 2, can quickly and conveniently install or disassemble journal part 2, increase the practicability of the utility model device, effectively reduce the use cost of user,

[0029] When buckling between connecting lug 212 and matching mouth 222, the first extension 211 and the second extension 221 are respectively embedded in two symmetrical locating grooves 11, and upper shaft piece 21 and lower shaft piece 22 are installed on axle core ring 1, and form a cylinder, so that axle core ring 1 and journal part 2 can be quickly installed and combined into a complete differential spider axle, convenient for user's use;

[0030] When connecting lug 212 and matching mouth 222 are separated from each other, the first extension 211 and the second extension 221 are respectively away from two symmetrical locating grooves 11, and upper shaft piece 21 and lower shaft piece 22 can be disassembled on axle core ring 1, can quickly and conveniently disassemble journal part 2 when needing to maintain, replace journal part 2, and can replace damaged upper shaft piece 21 or lower shaft piece 22 separately, improve the use performance of journal part 2, reduce the maintenance cost of user;

[0031] Based on the above structure, since the upper and lower surfaces of the shaft core ring 1 are provided with four positioning grooves 11 which are opposite to each other in pairs, each set of the shaft neck part 2 includes an upper shaft piece 21 and a lower shaft piece 22, and the upper shaft piece 21 and the lower shaft piece 22 are both semicylinders with the same diameter, the upper shaft piece 21 and the lower shaft piece 22 are respectively provided with a first extension part 211 and a second extension part 221 which are matched with the positioning grooves 11, the abutting surface of the upper shaft piece 21 is provided with a connecting protrusion 212, and the abutting surface of the lower shaft piece 22 is provided with a matching hole 222 which is matched with the connecting protrusion 212, so that through the buckling between the connecting protrusion 212 and the matching hole 222, the first extension part 211 and the second extension part 221 are respectively embedded in the two symmetrically arranged positioning grooves 11, the upper shaft piece 21 and the lower shaft piece 22 are installed on the shaft core ring 1 and abut to form a cylinder, the shaft core ring 1 and the shaft neck part 2 can be quickly installed and combined into a complete differential cross shaft, which is convenient for the user to use quickly, at the same time, the cylindrical structure can ensure the structural stability of the shaft neck part 2 when the external snap ring is snapped on the shaft neck part 2, and the shaft neck part 2 is more stable during work, so as to prevent the phenomenon of breaking of the shaft neck part 2 and further reduce the maintenance cost of the user, and through the mutual separation between the connecting protrusion 212 and the matching hole 222, the first extension part 211 and the second extension part 221 are respectively away from the two symmetrically arranged positioning grooves 11, so that the upper shaft piece 21 and the lower shaft piece 22 can be respectively detached from the shaft core ring 1, which can not only easily install the shaft neck part 2 on the shaft core ring 1, but also quickly detach the shaft neck part 2 from the shaft core ring 1 to complete the maintenance of the shaft neck part 2 without replacing the entire cross shaft, thereby saving the user's steps of maintaining the cross shaft and reducing the wear rate of the cross shaft, and the design is not only simple and ingenious, but also quick and convenient, thereby effectively reducing the user's maintenance cost and improving the practicality of the utility device.

[0032] Further, the utility device is divided into the shaft core ring 1, the upper shaft piece 21 and the lower shaft piece 22, which is more convenient to place than the commonly used integral structure cross shaft, can reduce the occupied space, is convenient for the user to transport in batches, and reduces the transportation cost.

[0033] In one embodiment, referring to Figures 1-4Further comprising the fixing piece 3, the fixing piece 3 includes the screw head 31, the screw rod 32 and the nut 33, the screw head 31 is a internal hexagonal screw head, compared with the structure of the external hexagonal bolt, the internal hexagonal wrench can be more conveniently applied torque in some narrow space, so that the fixing piece 3 installation or disassembly process is more smooth, it is convenient to quickly and conveniently replace the journal portion 2, improve the practicability of the utility device, the screw rod 32 is a half thread structure, the screw rod 32 is not threaded in the middle, the end portion is threadedly fixedly connected with the nut 33, force transmission and position fixation are realized, the screw rod 32 of the half thread structure can accurately control the position of the component, while ensuring the reliability of the connection, the stability of the journal portion 2 is improved, the screw head 31 and the screw rod 32 are integrally formed, the screw head 31 can be effectively prevented from being too small and lost after multiple uses, thereby improving the structural strength and stability of the journal portion 2, prolonging the service life of the journal portion 2, the screw head 31 is located at one end of the screw rod 32, a through hole 111 perpendicular to the axis of the ring 1 is formed in the central portion of the two symmetrically arranged positioning grooves 11, mounting holes 23 adapted to the through hole 111 are arranged on the first extension 211 and the second extension 221, one end of the mounting hole 23 on the first extension 211 is formed with a circular groove 2111 adapted to the screw head 31, one end of the mounting hole 23 on the second extension 221 is formed with a recess 2211 adapted to the size of the nut 33, the depth of the circular groove 2111 is equal to the thickness of the screw head 31, the depth of the recess 2211 is equal to the thickness of the nut 33, when the connecting lugs 212 and the embedded openings 222 are buckled, the screw head 31 is located in the circular groove 2111, the nut 33 is installed in the recess 2211, the screw rod 32 penetrates the mounting hole 23 and the through hole 111 and is threadedly connected with the nut 33, which can improve the stability of the journal portion 2 on the axis ring 1, also enhance the mechanical strength between the journal portion 2 and the axis ring 1, while ensuring the structural stability, preventing the fracture problem of the journal portion 2, further reducing the maintenance cost of the user.

[0034] In one embodiment, referring to Figures 1-3 The arc-shaped surfaces of the upper shaft 21 and the lower shaft 22 are provided with clamping grooves 24 near one end of the axis ring 1, the clamping grooves 24 not only provide convenience for the assembly and disassembly process of the utility device, but also ensure the accurate axial positioning of the planetary gear when assembling, by placing the clamping ring in the clamping groove 24 first, then installing the planetary gear on the journal portion 2, which can easily ensure the accurate axial positioning of the planetary gear, and when disassembling the utility device for maintenance or inspection, the planetary gear can be easily disassembled from the journal portion 2 by removing the clamping ring, without the need for complex tools or special disassembly methods to handle the axial positioning problem of the planetary gear, which can reduce vibration and noise, effectively improve the practicability of the utility device, and reduce the use cost of the user.

[0035] In the description of the application, it needs to be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0036] Those skilled in the art should understand that the above embodiments are only for clearly illustrating the application, and are not intended to limit the scope of the application. Based on the above disclosure, other changes or modifications can also be made by those skilled in the art, and these changes or modifications are still within the scope of the application.

Claims

1. A differential cross shaft that is easy to maintain, characterized in that: The device includes a core ring (1) and journals (2). The journals (2) are provided with four sets of evenly distributed around the core ring (1). The upper and lower surfaces of the core ring (1) are provided with four positioning grooves (11) that are opposite each other in pairs. Each set of journals (2) includes an upper shaft member (21) and a lower shaft member (22). The upper shaft member (21) and the lower shaft member (22) are both semi-cylinders with the same diameter. The upper shaft member (21) and the lower shaft member (22) correspond to two symmetrically arranged positioning grooves (11). The upper shaft (21) is provided with a first extension (211) and a second extension (221) respectively. A connecting protrusion (212) is provided on the mating surface of the upper shaft (21), and a fitting port (222) adapted to the connecting protrusion (212) is provided on the mating surface of the lower shaft (22). The first extension (211) and the second extension (221) are connected by fastening between the connecting protrusion (212) and the fitting port (222), so that the first extension (211) and the second extension (221) are respectively embedded in or away from the positioning groove (11). When the connecting protrusion (212) and the fitting port (222) are engaged, the first extension (211) and the second extension (221) are respectively embedded in the two symmetrically arranged positioning grooves (11), and the upper shaft (21) and the lower shaft (22) are mounted on the shaft ring (1) and fit together to form a cylinder; When the connecting protrusion (212) and the fitting port (222) are separated from each other, the first extension (211) and the second extension (221) are respectively moved away from the two symmetrically arranged positioning grooves (11), and the upper shaft (21) and the lower shaft (22) can be disassembled onto the shaft ring (1).

2. The easy-to-maintain differential cross shaft according to claim 1, characterized in that: It also includes a fastener (3), which includes a screw head (31), a screw rod (32), and a nut (33). The screw head (31) is located at one end of the screw rod (32). A through hole (111) perpendicular to the shaft ring (1) is provided at the center of the two symmetrically arranged positioning grooves (11). The first extension (211) and the second extension (221) are both provided with mounting holes (23) that are adapted to the through holes (111). One end of the mounting hole (23) on the first extension (211) forms a... The second extension (221) has a circular groove (2111) for the screw head (31), and a groove (2211) of the size of the nut (33) is formed at one end of the mounting hole (23). When the connecting protrusion (212) and the fitting port (222) are engaged, the screw head (31) is located in the circular groove (2111), the nut (33) is installed in the groove (2211), and the screw (32) passes through the mounting hole (23) and the through hole (111) to be threadedly connected to the nut (33).

3. The easy-to-maintain differential cross shaft according to claim 2, characterized in that: The depth of the circular groove (2111) is equal to the thickness of the screw head (31), and the depth of the recess (2211) is equal to the thickness of the nut (33).

4. The easy-to-maintain differential cross shaft according to claim 2, characterized in that: The screw head (31) is an internal hexagon screw head, and the screw (32) is a semi-threaded structure.

5. The easy-to-maintain differential cross shaft according to claim 2, characterized in that: The screw head (31) and the screw rod (32) are integrally formed.

6. The easy-to-maintain differential cross shaft according to claim 1, characterized in that: The upper shaft (21) and the lower shaft (22) both have a locking groove (24) at one end near the shaft ring (1) on their arc surfaces.

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