Adjustable cross shaft universal joint

Abstract

The utility model provides an adjustable cross shaft universal joint which structurally comprises a cross shaft body, the four end portions of the cross shaft body are each provided with a steering head in a rotating mode, an operation notch is formed in the center of the cross shaft body, and an adjustable positioning structure is arranged between every two steering heads. When other parts are connected and positioned, a worker can stretch into the operation notch through a tool or a finger and poke the rotary knob, so that the rotary knob drives the screw rod to rotate in situ through the positioning part, the screw rod drives the transmission block in threaded connection to stretch out of the movable groove, the positioning pad on the transmission block is in contact with the parts, positioning limitation is conducted, and operation is easy.

Description

TECHNICAL FIELD

[0001] The utility model relates to technical field especially relates to a kind of adjustable cross shaft universal joint. BACKGROUND

[0002] Cross shaft universal joint, also known as universal joint or Cardan joint, is a kind of mechanical device for connecting two shafts and transmitting torque and rotary motion. It allows two shafts to deflect relative to each other within a certain angle range, and is widely used in automobiles, industrial machinery, ships and aerospace fields.

[0003] The existing cross shaft universal joint is often provided with a connecting positioning slot when it is in contact with the parts, but the connecting positioning slot is of fixed size and cannot be adjusted, so during installation and debugging, engineers need to constantly process the connecting positioning slot, which is relatively inconvenient. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the above-mentioned problem and provides an adjustable cross shaft universal joint.

[0005] The technical solution of the utility model is as follows:

[0006] The utility model provides an adjustable cross shaft universal joint, which comprises a cross shaft body, a steering head is rotatably arranged at each end of the cross shaft body, an operating slot is arranged at the center of the cross shaft body, and an adjustable positioning structure is arranged between every two steering heads.

[0007] The adjustable positioning structure comprises a movable slot in the cross shaft body, an arc-shaped positioning slot is arranged at the opening of the movable slot, a positioning pad is movably arranged in the arc-shaped positioning slot, an end surface of the positioning pad facing the arc-shaped positioning slot is provided with a transmission block sliding into the movable slot, a transmission rod structure is rotatably arranged at the end of the movable slot away from the transmission block, and the transmission rod structure is connected with the transmission block and drives the transmission block to move during rotation.

[0008] In the above technical solution, the cross shaft universal joint with adjustable positioning structure is used, and when connected and positioned with other parts, the worker can insert the tool or finger into the operating slot, turn the knob, make the knob drive the screw rod to rotate in place, make the screw rod drive the transmission block connected by screw to extend out of the movable slot, make the positioning pad on the transmission block contact with the parts and be positioned and limited, and the operation is simple.

[0009] In one embodiment, the transmission rod structure comprises a positioning part in the movable slot, a driving knob on the inner wall of the operating slot, and a screw rod connected with the positioning part, and the screw rod is connected with the transmission block by screw, and the technical solution is adjusted by the transmission rod structure.

[0010] In one embodiment, the transmission block is provided with an internal threaded slot corresponding to the screw rod, which enables the transmission block to be threaded with the screw rod.

[0011] In one embodiment, the movable slot inner wall is provided with a slide rail limiting the rotation of the transmission block, which enables the transmission block to be limited and movable through the slide rail.

[0012] In one embodiment, the operation slot is communicated with the movable slot, which facilitates operation and use.

[0013] In one embodiment, the other end of the positioning part is connected with the driving knob, and the connection part forms an annular limiting slot, which enables the rotation positioning through the annular limiting slot.

[0014] In one embodiment, the operation slot end is provided with a taper for rotation positioning with the annular limiting slot.

[0015] In one embodiment, the positioning pad is made of elastic material and has an arc, which plays a shock-absorbing role and improves the positioning effect.

[0016] The above technical scheme has at least the following advantages or beneficial effects:

[0017] The adjustable cross shaft universal joint has an adjustable positioning structure, when connected and positioned with other parts, the staff can insert the tool or finger into the operation slot, rotate the knob, drive the screw rod to rotate in place through the positioning part, drive the threaded transmission block connected with the screw rod to extend out of the movable slot, and the positioning pad on the transmission block contacts and limits the parts, which is simple to operate. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings illustrate exemplary embodiments of the present application and, together with the general description of the application given above, and the detailed description of the embodiments given below, serve to explain the principles of the present application. These drawings are included herewith and constitute a part of this specification. In the drawings:

[0019] Figure 1 FIG. 1 is a first perspective view of the adjustable cross shaft universal joint according to the present application;

[0020] Figure 2 FIG. 2 is a second perspective view of the adjustable cross shaft universal joint according to the present application;

[0021] Figure 3 FIG. 3 is a top view of the adjustable cross shaft universal joint according to the present application;

[0022] Figure 4 FIG. 4 is a structural schematic view of the transmission rod structure. DETAILED DESCRIPTION

[0023] Embodiments of the present application will be described in more detail with reference to the drawings. While several embodiments of the present application are shown in the drawings, it is understood that the present application can be embodied in various forms and should not be interpreted in a limited sense as set forth in the embodiments set forth herein. Rather, these embodiments are provided so that the present application can be more thoroughly and completely understood. It should be understood that the drawings and embodiments of the present application are for illustrative purposes only and are not intended to limit the scope of protection of the present application.

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

[0025] It should be understood that the term "comprising" and its variants used herein 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 present application are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

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

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

[0028] Reference Figures 1-4 An adjustable cross shaft universal joint, comprising a cross shaft body 1, the cross shaft body 1 is provided with a steering head 11 at each of the four ends, the center of the cross shaft body 1 is provided with an operation notch 12, and adjustable positioning structure 13 is arranged between every two steering heads 11;

[0029] The adjustable positioning structure 13 comprises a movable slot 131 in the cross shaft body 1, an arc-shaped positioning slot 132 is arranged at the opening of the movable slot 131, a positioning pad 133 is movably arranged in the arc-shaped positioning slot 132, the positioning pad 133 is provided with a transmission block 134 slidingly extending into the movable slot 131 towards the end surface of the arc-shaped positioning slot 132, and a transmission rod structure 135 is rotatably arranged at the end of the movable slot 131 away from the transmission block 134, the transmission rod structure 135 is connected with the transmission block 134 and drives the transmission block 134 to move in the rotating process.

[0030] In the above technical scheme, the cross shaft universal joint with the adjustable positioning structure 13 is used, when connected and positioned with other parts, the worker can operate the slot 12 by tools or fingers to rotate the knob 1352, so that the knob 1352 drives the screw rod 1353 to rotate in place, the screw rod 1353 drives the transmission block 134 connected with the screw to extend out of the movable slot 131, the positioning pad 133 on the transmission block 134 contacts with the part and is positioned and limited, and the operation is simple.

[0031] In one embodiment, the transmission rod structure 135 comprises a positioning part 1351 in the movable slot 131, a driving knob 1352 on the inner wall of the operation slot 12, and a screw rod 1353 connected with the positioning part 1351, and the screw rod 1353 is threadedly connected with the transmission block 134, and the transmission is adjusted by the transmission rod structure 135.

[0032] In one embodiment, the transmission block 134 is provided with an internal thread groove corresponding to the screw rod 1353, so that the transmission block 134 and the screw rod 1353 are threadedly transmitted.

[0033] In one embodiment, the inner wall of the movable slot 131 is provided with a slide rail limiting the rotation of the transmission block 134, so that the transmission block 134 is limitedly moved by the slide rail.

[0034] In one embodiment, the operation slot 12 is communicated with the movable slot 131, which is convenient for operation and use.

[0035] In one embodiment, the other end of the positioning part 1351 is connected with the driving knob 1352, and the connection part forms an annular limiting groove, and the transmission is positioned by the annular limiting groove.

[0036] In one embodiment, the end of the operation slot 12 is provided with a taper for rotating and positioning with the annular limiting groove.

[0037] In one embodiment, the positioning pad 133 is made of elastic material and has an arc, which plays a role of shock absorption and improves the positioning effect.

[0038] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present 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 present application.

[0039] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present application, and are not intended to limit the scope of the present application. Based on the above disclosure, other changes or modifications can be made by those skilled in the art, and these changes or modifications are still within the scope of the present application.

Claims

1. An adjustable cross-axle universal joint, characterized by: The cross shaft body (1) is provided with steering heads (11) at four ends, and an operation notch (12) is arranged at the center of the cross shaft body (1), and adjustable positioning structures (13) are arranged between every two steering heads (11); The adjustable positioning structure (13) comprises a movable groove (131) arranged in the cross shaft body (1), an arc-shaped positioning groove (132) is arranged at the opening of the movable groove (131), a positioning pad (133) is movably arranged in the arc-shaped positioning groove (132), the end face of the positioning pad (133) towards the arc-shaped positioning groove (132) is provided with a transmission block (134) slidingly extending into the movable groove (131), and a transmission rod structure (135) is rotatably arranged at the end of the movable groove (131) away from the transmission block (134), the transmission rod structure (135) is connected with the transmission block (134) and drives the transmission block (134) to move in the rotating process.

2. The adjustable cross axle universal joint of claim 1, wherein: The transmission rod structure (135) comprises a positioning portion (1351) arranged in the movable groove (131), a driving knob (1352) arranged on the inner wall of the operation notch (12), and a screw rod (1353) connected with the positioning portion (1351), wherein the screw rod (1353) is threadedly connected with the transmission block (134).

3. The adjustable cross axle universal joint of claim 2, wherein: The transmission block (134) is provided with an inner thread groove corresponding to the screw rod (1353).

4. The adjustable cardan joint of claim 3, wherein: The inner wall of the movable groove (131) is provided with a sliding rail limiting the rotation of the transmission block (134).

5. The adjustable cross axle universal joint of claim 1, wherein: The operation notch (12) is communicated with the movable groove (131).

6. The adjustable cross axle universal joint of claim 2, wherein: The other end of the positioning portion (1351) is connected with the driving knob (1352), and the connection portions of the two form an annular limiting groove.

7. The adjustable cross axle universal joint of claim 6, wherein: The end of the operation notch (12) is provided with a taper rotationally positioned with the annular limiting groove.

8. The adjustable cross axle universal joint of claim 1, wherein: The positioning pad (133) is made of elastic material and has an arc.

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