A sheath guide for constant velocity drive shafts

Abstract

The utility model relates to a sheath guide device for equal -speed transmission axle, including installation shaft, connecting shaft, installation sleeve, sheath, turnover mechanism, drive mechanism, the installation sleeve is encased in installation shaft, one end of connecting shaft is connected with installation shaft, and the other end is fixedly provided with elastic centre peg, the sheath is encased in installation sleeve, the turnover mechanism includes connecting sleeve, a plurality of turnover piece, the connecting sleeve is encased in connecting shaft, and is provided with a plurality of first taper surface on the outer periphery of connecting sleeve, one end of turnover piece is hinged in the sleeve, and the other end is abutted on elastic centre peg, and the outer periphery of connecting sleeve is evenly provided along a plurality of turnover pieces, the side of turnover piece close connecting sleeve is provided with the second taper surface with first taper surface cooperation, and the other side is abutted on the inner wall surface of sheath, installation shaft, connecting sleeve, sheath are connected with drive mechanism respectively.

Description

Technical Field

[0001] This utility model relates to the field of constant velocity drive shaft assembly, and specifically to a sheath guide device for constant velocity drive shafts. Background Technology

[0002] In the assembly process of constant speed drive shafts, the assembly quality of the sealing system directly determines the overall service life and operational reliability of the drive shaft.

[0003] The sheath is a key component of the sealing system. During assembly, a tapered guide head is typically used for guidance to reduce assembly interference between the sheath and the shaft. However, in actual production scenarios, when the sheath's diameter is small, or when the difference between the sheath's inner diameter and the drive shaft diameter is significant, the compatibility of traditional guide heads decreases considerably. On the one hand, during manual assembly, the limited assembly space makes manual assembly difficult for operators, requiring significant external force to complete the fitting, resulting in low assembly efficiency. On the other hand, during automated assembly, the assembly equipment is often incompatible with traditional guide heads. If the guide head is omitted and the sheath is assembled directly, there is a risk of scratching the sheath, potentially leading to product quality issues. Utility Model Content

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by this utility model is to provide a sheath guiding device for a constant velocity transmission shaft, which can effectively reduce the installation difficulty of the sheath and avoid the risk of scratching the sheath.

[0005] To achieve the above objectives, this utility model provides a sleeve guiding device for a constant velocity drive shaft, used to guide the sleeve to be fitted onto the constant velocity drive shaft. The constant velocity drive shaft has a central hole at one end and includes a mounting shaft, a connecting shaft, a mounting sleeve, a sleeve, a flipping mechanism, and a driving mechanism. One end of the mounting sleeve has an opening, and the other end has a connecting hole. The diameter of the connecting hole is smaller than the diameter of the opening. The mounting shaft passes through the opening of the mounting sleeve and is located within the inner cavity of the mounting sleeve. One end of the connecting shaft passes through the connecting hole of the mounting sleeve and is connected to the mounting shaft; the other end is fixedly provided with an elastic center. The sleeve is fitted onto the outer circumferential surface of the mounting sleeve. The flipping mechanism includes a connecting sleeve and multiple flipping plates. The connecting sleeve is fitted onto a connecting shaft, and multiple first conical surfaces are provided on the outer circumferential surface of the connecting sleeve. The multiple first conical surfaces are evenly distributed along the outer circumferential surface of the connecting sleeve. One end of each flipping plate is hinged to the sleeve, and the other end abuts against an elastic tip. The multiple flipping plates are evenly distributed along the outer circumferential surface of the connecting sleeve. The side of each flipping plate closest to the connecting sleeve has a second conical surface that mates with the first conical surface, and the other side abuts against the inner wall of the sheath. The mounting shaft, connecting sleeve, and sheath are respectively connected to a driving mechanism, which is used to drive the mounting shaft, connecting sleeve, and sheath to move respectively.

[0006] Furthermore, it also includes a spring, one end of which is fixedly connected to the connecting shaft and the other end of which is fixedly connected to the mounting shaft.

[0007] Furthermore, the flipping mechanism also includes an elastic O-ring, which is fitted onto multiple flipping plates.

[0008] Furthermore, both the elastic tip and the elastic O-ring are made of rubber.

[0009] Furthermore, the drive mechanism includes a first cylinder, a second cylinder, and a third cylinder, the mounting shaft is connected to the first cylinder, the connecting sleeve is connected to the second cylinder, and the sheath is connected to the third cylinder.

[0010] As described above, the sheath guide device for constant velocity transmission shafts according to this utility model has the following beneficial effects:

[0011] By setting up an installation shaft, a connecting shaft, an installation sleeve, a protective sleeve, a flipping mechanism, and a drive mechanism, the drive mechanism pushes the installation shaft, the connecting sleeve, and the protective sleeve to move towards the constant speed transmission shaft. The elastic tip of the connecting shaft can play a good guiding role, and the connecting sleeve can gradually squeeze the flipping piece, thereby expanding the protective sleeve, so that the protective sleeve can be fitted onto the constant speed transmission shaft. The assembly efficiency is high, which can effectively reduce the installation difficulty of the protective sleeve and also avoid the risk of scratching the protective sleeve. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the sheath guiding device in this utility model.

[0013] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0014] Explanation of icon numbers

[0015] 1. Mounting shaft, 2. Connecting shaft, 3. Mounting sleeve, 4. Protective sleeve, 5. Tilting mechanism, 501. Connecting sleeve, 502. Tilting plate, 6. Constant speed transmission shaft, 601. Center hole. Detailed Implementation

[0016] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. These embodiments are only used to illustrate this utility model and are not intended to limit it.

[0017] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] See Figures 1 to 2This utility model provides a sleeve guiding device for a constant velocity transmission shaft, used to guide the sleeve 4 to be assembled on a constant velocity transmission shaft 6. The constant velocity transmission shaft 6 has a central hole 601 at one end and includes a mounting shaft 1, a connecting shaft 2, a mounting sleeve 3, a sleeve 4, a flipping mechanism 5, and a driving mechanism. One end of the mounting sleeve 3 has an opening, and the other end has a connecting hole with a diameter smaller than the opening diameter. The mounting shaft 1 passes through the opening of the mounting sleeve 3 and is located inside the cavity of the mounting sleeve 3. One end of the connecting shaft 2 passes through the connecting hole of the mounting sleeve 3 and is connected to the mounting shaft 1; the other end is fixedly provided with an elastic center. The sleeve 4 is fitted onto the outer circumferential surface of the mounting sleeve 3. The flipping mechanism 5 includes a connecting sleeve 501 and multiple flipping plates 502. The connecting sleeve 501 is fitted onto the connecting shaft 2. Furthermore, multiple first conical surfaces are provided on the outer circumferential surface of the connecting sleeve 501. These multiple first conical surfaces are evenly arranged along the outer circumferential surface of the connecting sleeve 501. One end of the flipping piece 502 is hinged to the sleeve, and the other end abuts against the elastic tip. These multiple flipping pieces 502 are evenly arranged along the outer circumferential surface of the connecting sleeve 501. The side of the flipping piece 502 closest to the connecting sleeve 501 is provided with a second conical surface that mates with the first conical surface, and the other side abuts against the inner wall of the sheath 4. The mounting shaft 1, the connecting sleeve 501, and the sheath 4 are respectively connected to the drive mechanism. The drive mechanism is used to push the mounting shaft 1, the connecting sleeve 501, and the sheath 4 to move respectively. Specifically, it can push the mounting shaft 1, the connecting sleeve 501, and the sheath 4 to move towards or away from the constant speed transmission shaft 6 respectively.

[0021] The basic working principle of the sleeve guiding device for a constant velocity transmission shaft involved in this utility model is as follows: When assembling the sleeve 4, the guiding device is placed at the constant velocity transmission shaft 6. By setting up the mounting shaft 1, connecting shaft 2, mounting sleeve 3, sleeve 4, flipping mechanism 5, and driving mechanism, the driving mechanism pushes the mounting shaft 1 to move towards the constant velocity transmission shaft 6. At this time, the mounting shaft 1 moves towards the constant velocity transmission shaft 6 in the inner cavity of the mounting sleeve 3, thereby driving the connecting shaft 2 to move until the elastic tip of the connecting shaft 2 abuts against the center hole 601 of the constant velocity transmission shaft 6. The driving mechanism then pushes the connecting sleeve 501. The sleeve 501 moves towards the constant speed transmission shaft 6. At this time, the first conical surface on the outer circumference of the connecting sleeve 501 presses against the second conical surface on the flipping piece 502, so that the flipping piece 502 can rotate around its hinge point with the sleeve. This causes multiple flipping pieces 502 to move away from the elastic tip, thereby causing the sheath 4 to expand. At this time, the drive mechanism pushes the sheath 4 towards the constant speed transmission shaft 6, thereby assembling the sheath 4 onto the constant speed transmission shaft 6. When the sheath 4 is assembled, the drive mechanism drives the mounting shaft 1, the connecting sleeve 501, and the sheath 4 to move and reset away from the constant speed transmission shaft 6.

[0022] See Figures 1 to 2 The present invention will be further described below with reference to a specific embodiment:

[0023] In this embodiment, see Figure 1 , Figure 2 As a preferred design, a spring is also included. One end of the spring is fixedly connected to the connecting shaft 2, and the other end is fixedly connected to the mounting shaft 1. When the sheath 4 is assembled, the drive mechanism pushes the mounting shaft 1 to move towards the constant speed transmission shaft 6. The spring is in an elastic energy storage state. When the sheath 4 is assembled, the drive mechanism drives the mounting shaft 1 to move and reset. The spring releases its elasticity and can assist the connecting shaft 2 in resetting.

[0024] In this embodiment, see Figure 1 , Figure 2 As a preferred design, the flipping mechanism 5 also includes an elastic O-ring, which is fitted onto multiple flipping pieces 502. When the sheath 4 is assembled, the flipping pieces 502 can be reset and closed under the action of the O-ring.

[0025] In this embodiment, see Figure 1 , Figure 2 As a preferred design, both the elastic tip and the elastic O-ring are made of rubber, which has high elasticity that can be restored, as well as good wear resistance and cushioning.

[0026] In this embodiment, see Figure 1 , Figure 2 As a preferred design, the drive mechanism includes a first cylinder, a second cylinder, and a third cylinder. The mounting shaft 1 is connected to the first cylinder, the connecting sleeve 501 is connected to the second cylinder, and the sheath 4 is connected to the third cylinder. It has good uniform motion characteristics, rapid response, flexible start and stop, and simple and reliable structure with low operating cost.

[0027] As can be seen from the above, the sheath guide device for constant velocity transmission shafts of this utility model has the following beneficial effects:

[0028] By setting up an installation shaft 1, a connecting shaft 2, an installation sleeve 3, a protective sleeve 4, a flipping mechanism 5, and a driving mechanism, the driving mechanism pushes the installation shaft 1, the connecting sleeve 501, and the protective sleeve 4 to move towards the constant speed transmission shaft 6. The elastic tip of the connecting shaft 2 can play a good guiding role, and the connecting sleeve 501 can gradually squeeze the flipping piece 502, thereby expanding the protective sleeve 4, thus guiding the protective sleeve 4 to be assembled onto the constant speed transmission shaft 6. The assembly efficiency is high, which can effectively reduce the installation difficulty of the protective sleeve 4 and also avoid the risk of scratching the protective sleeve 4.

[0029] In summary, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0030] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A sleeve guiding device for a constant velocity drive shaft, used to guide the sleeve (4) to be assembled on a constant velocity drive shaft (6), wherein a center hole (601) is provided at one end of the constant velocity drive shaft (6), characterized in that: The system includes a mounting shaft (1), a connecting shaft (2), a mounting sleeve (3), a protective sleeve (4), a flipping mechanism (5), and a driving mechanism. One end of the mounting sleeve (3) has an opening, and the other end has a connecting hole. The diameter of the connecting hole is smaller than the diameter of the opening. The mounting shaft (1) passes through the opening of the mounting sleeve (3) and is located within the inner cavity of the mounting sleeve (3). One end of the connecting shaft (2) passes through the connecting hole of the mounting sleeve (3) and is connected to the mounting shaft (1). The other end is fixedly provided with an elastic center. The protective sleeve (4) is fitted onto the outer circumferential surface of the mounting sleeve (3). The flipping mechanism (5) includes a connecting sleeve (501) and multiple flipping plates (502). The connecting sleeve (501) is fitted onto the connecting shaft (2), and... The outer circumferential surface of the connecting sleeve (501) is provided with a plurality of first conical surfaces, which are evenly arranged along the outer circumferential surface of the connecting sleeve (501). One end of the flip piece (502) is hinged to the sleeve, and the other end abuts against the elastic tip. The plurality of flip pieces (502) are evenly arranged along the outer circumferential surface of the connecting sleeve (501). The side of the flip piece (502) near the connecting sleeve (501) is provided with a second conical surface that matches the first conical surface, and the other side abuts against the inner wall of the sheath (4). The mounting shaft (1), the connecting sleeve (501), and the sheath (4) are respectively connected to the driving mechanism. The driving mechanism is used to push the mounting shaft (1), the connecting sleeve (501), and the sheath (4) to move respectively.

2. The sheath guide device for a constant velocity transmission shaft according to claim 1, characterized in that: It also includes a spring, one end of which is fixedly connected to the connecting shaft (2) and the other end is fixedly connected to the mounting shaft (1).

3. The sheath guide device for a constant velocity transmission shaft according to claim 1, characterized in that: The flipping mechanism (5) also includes an elastic O-ring, which is fitted onto a plurality of flipping pieces (502).

4. The sheath guide device for a constant velocity transmission shaft according to claim 3, characterized in that: Both the elastic tip and the elastic O-ring are made of rubber.

5. The sheath guide device for a constant velocity transmission shaft according to claim 1, characterized in that: The drive mechanism includes a first cylinder, a second cylinder, and a third cylinder. The mounting shaft (1) is connected to the first cylinder, the connecting sleeve (501) is connected to the second cylinder, and the protective sleeve (4) is connected to the third cylinder.

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