Spherical hinge type universal coupling

Abstract

The spherical hinge type universal coupling is characterized in that a connecting mechanism comprises a connecting column, two sleeves, a clamping column and a first through hole, the two sleeves are symmetrically arranged along the center of the connecting column, connecting plates are fixedly connected between the two sleeves and the connecting column, the ends, away from the connecting plates, of the sleeves are fixedly connected with limiting rings, and the limiting rings are fixedly connected with the clamping column. A spring and a shaft cap are slidably connected into the sleeve, the shaft cap is clamped to the end, away from the spherical hinge, of the lower shaft head, a shaft plug is fixedly connected to the inner side of the shaft cap and clamped into the shaft hole, the first through holes are formed in the lower shaft head, and the two first through holes are symmetrically formed along the center of the lower shaft head. Relates to the technical field of universal shaft joints, two groups of shaft heads and spherical hinges are in transmission connection through a connecting column, a sleeve and a shaft cap, when the transmission range of the universal shaft joint exceeds 90 degrees, a connecting mechanism plays a role in connection and matched transmission, and a spring plays a certain buffering role, so that the transmission is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of universal joints, in particular to a ball-joint universal joint. Background Art

[0002] The ball-jointed universal coupling is a transmission device that uses the relative movement of the "ball and hinge bracket". Its structure is relatively simple, and it mainly includes inner and outer sleeves, brackets, hinges, ball heads and sealing rings. This coupling uses the movement of the ball head and hinge to achieve the relative movement of the inner and outer sleeves, thereby transmitting torque. Its advantages are simple structure and stable transmission performance, so it has been widely used in many industries, such as the road transportation industry, agricultural machinery industry and entertainment equipment industry. In addition, the ball-jointed universal coupling can also be sealed and lubricated, effectively reducing the wear rate of the contact parts and increasing the service life. However, the transmission range of the universal coupling is generally between 45° and 90°. If it exceeds 90°, two or more universal couplings are required to connect and cooperate for transmission. Therefore, the utility model proposes a universal coupling with a detachable connection mechanism to solve the above-mentioned problems. Utility Model Content

[0003] The purpose of the utility model is to provide a ball-joint universal coupling to solve the technical problems mentioned in the above background technology.

[0004] The purpose of the utility model can be achieved through the following technical solutions:

[0005] A ball-joint universal coupling comprises an upper shaft head, a lower shaft head and a ball joint, wherein the upper shaft head and the lower shaft head are both slidably connected to the ball joint, an axis hole is provided at one end of the upper shaft head and the lower shaft head away from the ball joint, a connecting mechanism is arranged on the lower shaft head, and a dustproof mechanism is movably connected between the upper shaft head and the lower shaft head.

[0006] The connecting mechanism includes a connecting column, a sleeve, a clamping column and a first through hole, two of the sleeves are symmetrically arranged along the center of the connecting column, a connecting plate is fixedly connected between the two sleeves and the connecting column, one end of the sleeve away from the connecting plate is fixedly connected to a limiting ring, a spring and a shaft cap are slidably connected in the sleeve respectively, the shaft cap is clamped at the end of the lower shaft head away from the ball joint, the inner side of the shaft cap is fixedly connected with a shaft plug, the shaft plug is clamped in the shaft hole, the first through hole is opened on the lower shaft head, two of the first through holes are symmetrically arranged along the center of the lower shaft head, a second through hole is penetrated on the shaft cap, two of the second through holes are symmetrically arranged along the center of the shaft cap, a third through hole is penetrated on the shaft plug, and the clamping column penetrates the second through hole, the first through hole and the third through hole in sequence.

[0007] As a further solution of the utility model: the lower shaft head is slidably connected to the limiting ring.

[0008] As a further solution of the utility model: the dustproof mechanism includes a first annular groove, a second annular groove and a bellows, the first annular groove is opened on the surface of the upper shaft head, the second annular groove is opened on the surface of the lower shaft head, one end of the bellows is clamped in the first annular groove, and the other end of the bellows is clamped in the second annular groove.

[0009] As a further solution of the utility model: a cylindrical groove is provided on the surface of the ball joint, and the cylindrical groove is provided with two mutually perpendicular grooves.

[0010] As a further solution of the utility model: a claw group is provided at the opposite ends of the upper shaft head and the lower shaft head, and a mounting groove is provided at the bottom end of the upper shaft head claw group.

[0011] As a further solution of the utility model: the two claw groups are slidably connected to the cylindrical groove. Beneficial Effects

[0012] The utility model provides a ball joint universal coupling. Compared with the prior art, it has the following beneficial effects:

[0013] (1) The present application connects the transmission of two sets of shaft heads and ball joints through connecting columns, sleeves and shaft caps. When the transmission range of the universal joint exceeds 90°, the connecting mechanism plays a role in connecting and matching the transmission, and the spring plays a certain buffering role, making the transmission more stable.

[0014] (2) The present application uses a bellows clamped at the connection between the upper shaft head and the lower shaft head to play a role in dust prevention of the ball joint, making the transmission of the universal joint smoother and also increasing the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 It is a partial main cross-sectional view of the utility model;

[0017] Figure 3 It is a partial exploded view of the connection mechanism of the utility model;

[0018] Figure 4 It is a partial exploded view of the utility model.

[0019] In the figure: 1. upper shaft head; 2. lower shaft head; 3. ball joint; 4. shaft hole; 5. connecting mechanism; 501. connecting column; 502. sleeve; 503. clamping column; 504. first through hole; 505. connecting plate; 506. limiting ring; 507. spring; 508. shaft cap; 509. shaft plug; 510. second through hole; 511. third through hole; 6. dustproof mechanism; 61. first annular groove; 62. second annular groove; 63. bellows; 7. cylindrical groove; 8. claw group; 9. mounting groove. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 As shown, the utility model is a ball-jointed universal coupling, including an upper shaft head 1, a lower shaft head 2 and a ball joint 3, the upper shaft head 1 and the lower shaft head 2 are both slidably connected with the ball joint 3, the ends of the upper shaft head 1 and the lower shaft head 2 away from the ball joint 3 are provided with shaft holes 4, the lower shaft head 2 is provided with a connecting mechanism 5, and a dustproof mechanism 6 is movably connected between the upper shaft head 1 and the lower shaft head 2; the connecting mechanism 5 includes a connecting column 501, a sleeve 502, a clamping column 503 and a first through hole 504, two sleeves 502 are symmetrically arranged along the center of the connecting column 501, a connecting plate 505 is fixedly connected between the two sleeves 502 and the connecting column 501, and the end of the sleeve 502 away from the connecting plate 505 is fixedly connected A limit ring 506 is fixedly connected, and a spring 507 and a shaft cap 508 are respectively slidably connected in the sleeve 502. The shaft cap 508 is clamped at the end of the lower shaft head 2 away from the ball joint 3. The inner side of the shaft cap 508 is fixedly connected with a shaft plug 509, and the shaft plug 509 is clamped in the shaft hole 4. The first through hole 504 is opened on the lower shaft head 2, and two first through holes 504 are symmetrically arranged along the center of the lower shaft head 2. A second through hole 510 is penetrated on the shaft cap 508, and two second through holes 510 are symmetrically arranged along the center of the shaft cap 508. A third through hole 511 is penetrated on the shaft plug 509, and the clamping column 503 penetrates the second through hole 510, the first through hole 504 and the third through hole 511 in sequence.

[0022] The lower shaft head 2 is slidably connected to the limiting ring 506 .

[0023] The connecting column 501, sleeve 502 and shaft cap 508 connect the transmission of the two sets of shaft heads and the ball joint 3. When the transmission range of the universal joint exceeds 90°, the connecting mechanism 5 plays a role in connecting and matching the transmission, and the spring 507 plays a certain buffering role, making the transmission more stable.

[0024] The dustproof mechanism 6 includes a first annular groove 61, a second annular groove 62 and a bellows 63. The first annular groove 61 is opened on the surface of the upper shaft head 1, and the second annular groove 62 is opened on the surface of the lower shaft head 2. One end of the bellows 63 is clamped in the first annular groove 61, and the other end of the bellows 63 is clamped in the second annular groove 62.

[0025] The bellows 63 is clamped at the connection between the upper shaft head 1 and the lower shaft head 2, which plays a role in dust prevention of the ball joint 3, makes the transmission of the universal joint smoother, and also increases the service life of the device.

[0026] The surface of the ball joint 3 is provided with a cylindrical groove 7, and the cylindrical groove 7 is provided with two mutually perpendicular ones.

[0027] A claw group 8 is disposed at the opposite ends of the upper shaft head 1 and the lower shaft head 2 , and a mounting groove 9 is formed at the bottom end of the claw group 8 of the upper shaft head 1 .

[0028] The two claw groups 8 are slidably connected to the cylindrical groove 7 .

[0029] The intersection of the two cylindrical grooves 7 is a cut-out plane, and the distance between the two planes is smaller than the inner width of the corresponding claw set 8 .

[0030] The center of the inner hole surface of the claw group 8 is concentric with the spherical surface of the ball joint 3, the length of the claw group 8 is greater than the radius of the ball joint 3, the distance between the claw groups 8 is slightly greater than the distance between the planes cut out by the two cylindrical grooves 7, and is smaller than the arc diameter of the corresponding cylindrical groove 7.

[0031] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0032] Working principle of the utility model: when the transmission demand is too large and the connecting mechanism 5 is required to connect the transmission, the shaft cap 508, the shaft plug 509 are clamped with the upper shaft head 1 and the shaft hole 4, so that the first through hole 504, the second through hole 510 and the third through hole 511 are connected, and then the clamping column 503 is placed in the first through hole 504, the second through hole 510 and the third through hole 511, and then the end of the claw group 8 of the upper shaft head 1 is passed through the solid sleeve 502 and the limit ring 506, and then the spring 507 is placed in the sleeve 502, and fix the connecting column 501, the connecting plate 505 and the sleeve 502, and the sleeve 502 and the limiting ring 506 with screws, then clamp one end of the bellows 63 to the first annular groove 61 on the upper shaft head 1, clamp the ball joint 33 into the claw group 8 of the upper shaft head 1 and rotate 901°, then pass the claw group 8 of the lower shaft head 2 through the installation groove 9 and rotate 90° to install it, finally clamp the other end of the bellows 63 to the second annular groove 62 on the lower shaft head 2.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ball joint universal joint, comprising an upper shaft head (1), a lower shaft head (2) and a ball joint (3), characterized in that: The upper shaft head (1) and the lower shaft head (2) are both slidably connected to the ball joint (3); an axis hole (4) is provided at one end of the upper shaft head (1) and the lower shaft head (2) away from the ball joint (3); a connecting mechanism (5) is provided on the lower shaft head (2); and a dustproof mechanism (6) is movably connected between the upper shaft head (1) and the lower shaft head (2); The connecting mechanism (5) comprises a connecting column (501), a sleeve (502), a clamping column (503) and a first through hole (504); two sleeves (502) are symmetrically arranged along the center of the connecting column (501); a connecting plate (505) is fixedly connected between the two sleeves (502) and the connecting column (501); one end of the sleeve (502) away from the connecting plate (505) is fixedly connected to a limit ring (506); a spring (507) and a shaft cap (508) are slidably connected in the sleeve (502); the shaft cap (508) is clamped on one end of the lower shaft head (2) away from the ball joint (3); and the shaft cap A shaft plug (509) is fixedly connected to the inner side of (508), and the shaft plug (509) is clamped in the shaft hole (4). The first through hole (504) is opened on the lower shaft head (2), and two first through holes (504) are symmetrically arranged along the center of the lower shaft head (2). A second through hole (510) is opened through the shaft cap (508), and two second through holes (510) are symmetrically arranged along the center of the shaft cap (508). A third through hole (511) is opened through the shaft plug (509), and the clamping column (503) passes through the second through hole (510), the first through hole (504) and the third through hole (511) in sequence.

2. A ball joint universal coupling according to claim 1, characterized in that: The lower shaft head (2) is slidably connected to the limiting ring (506).

3. A ball joint universal coupling according to claim 1, characterized in that: The dustproof mechanism (6) comprises a first annular groove (61), a second annular groove (62) and a bellows (63); the first annular groove (61) is formed on the surface of the upper shaft head (1); the second annular groove (62) is formed on the surface of the lower shaft head (2); one end of the bellows (63) is clamped in the first annular groove (61); and the other end of the bellows (63) is clamped in the second annular groove (62).

4. A ball joint universal coupling according to claim 1, characterized in that: A cylindrical groove (7) is provided on the surface of the ball joint (3), and the cylindrical groove (7) is provided with two mutually perpendicular grooves.

5. The ball joint universal coupling according to claim 1, characterized in that: A claw group (8) is provided at the opposite end of the upper shaft head (1) and the lower shaft head (2), and a mounting groove (9) is provided at the bottom end of the claw group (8) of the upper shaft head (1).

6. A ball joint universal coupling according to claim 5, characterized in that: The two claw groups (8) are slidably connected to the cylindrical groove (7).

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