Mistake proofing device and fork shaft connecting assembly

Abstract

The utility model discloses a mistake proofing device which comprises a first locating piece, a second locating piece and a shielding piece, the shielding piece is connected between the first locating piece and the second locating piece, the first locating piece is used for being inserted into an inner hole of an input shaft, and the second locating piece is used for being arranged outside the input shaft in a sleeved mode. A second bolt half hole is formed in the shielding piece, and the second bolt half hole and a first bolt half hole in the outer wall of the input shaft can be spliced into a complete bolt hole; in the process that the input shaft is inserted into the fork piece, before the bolt hole is aligned with a bolt mounting hole in the fork piece, the shielding piece is used for shielding the bolt mounting hole. The utility model further discloses a fork shaft connecting assembly. Before the bolt hole of the shielding piece is aligned with the bolt mounting hole in the fork piece, the bolt mounting hole in the fork piece is shielded by the shielding piece, so that the bolt can be prevented from being mistakenly mounted on the fork piece.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of installation auxiliary device especially relates to a mistake proofing device and fork axle connecting assembly. BACKGROUND

[0002] In the prior art (WO 2019 / 154830 Al), in order to transmit the steering torque, the steering wheel is connected to the intermediate shaft (I shaft) through the steering column and the input shaft. The intermediate shaft (I shaft) has a universal joint. The input shaft is connected in a torque-locked manner through the fork of the first universal joint. During normal installation, the shaft needs to be inserted into the insertion hole of the fork, and after being inserted into place, the bolt is inserted into the bolt mounting hole of the fork to realize the fixed connection of the shaft and the fork.

[0003] However, in the actual assembly process, when the input shaft is inserted into the fork and their overlapping length is only a few millimeters, the bolt can also be inserted into the bolt mounting hole of the fork. This will cause the misinstallation of the shaft and the fork, resulting in torque transmission failure and safety problems.

[0004] Therefore, it is necessary to design a mistake proofing device and fork axle connecting assembly to prevent misassembly of the input shaft. SUMMARY

[0005] The utility model aims at overcoming the defects of prior art, and provides a mistake proofing device and fork axle connecting assembly for preventing misassembly of an input shaft.

[0006] The technical scheme of the utility model provides a mistake proofing device, which comprises a first positioning piece, a second positioning piece and a shielding piece, the shielding piece is connected between the first positioning piece and the second positioning piece, the first positioning piece is used for being inserted into the inner hole of an input shaft, the second positioning piece is used for being sleeved on the outside of the input shaft, a second bolt half hole is arranged on the shielding piece, and the second bolt half hole and a first bolt half hole on the outer wall of the input shaft can be combined into a complete bolt hole.

[0007] When the input shaft is inserted into the fork, the shielding piece is used for shielding the bolt mounting hole before the bolt hole is aligned with the bolt mounting hole on the fork.

[0008] Further, the first positioning piece comprises an insertion part and a step part, one end of the step part is connected with the shielding piece, and when the insertion part is completely inserted into the inner hole of the input shaft, the step part is stopped outside the end part of the input shaft.

[0009] Further, a slope surface is arranged on one side of the insertion part which faces the shielding piece, and when the insertion part is completely inserted into the inner hole of the input shaft, the slope surface is in contact with the inner wall of the first bolt half hole on the input shaft.

[0010] Further, the insertion part comprises an arc surface and a plane, two arc surfaces are respectively located on the upper and lower sides of the insertion part, and two planes are respectively located on the left and right sides of the insertion part; the inclined surface is located at the end of one of the arc surfaces.

[0011] Further, the shielding piece is a flat plate structure, and when the insertion part is completely inserted into the inner hole of the input shaft, the second bolt half-hole on the shielding piece and the first bolt half-hole on the outer wall of the input shaft can be spliced into a complete bolt hole.

[0012] Further, the second positioning piece is a circular ring, and the second positioning piece is in gap cooperation with the outer wall of the input shaft.

[0013] The utility model also provides a fork shaft connecting assembly, including fork and input shaft, be equipped with insertion hole on the fork, the insertion hole one side is provided with the notch, the both sides of the fork still are equipped with bolt mounting hole, still include the mistake proofing device, when the input shaft inserts the insertion hole of the fork, the shielding piece enters the notch and shields the bolt mounting hole, when the bolt hole and the bolt mounting hole are aligned, the bolt passes through the bolt mounting hole and the bolt hole and connects the fork with the input shaft.

[0014] Further, the first positioning piece comprises an insertion part and a step part, and when the insertion part is completely inserted into the inner hole of the input shaft, the step part is stopped outside the end of the input shaft.

[0015] Further, the insertion part is provided with an inclined surface on the side facing the shielding piece, and when the insertion part is completely inserted into the inner hole of the input shaft, the inclined surface is in contact with the inner wall of the first bolt half-hole on the input shaft.

[0016] Further, the shielding piece is a flat plate structure, and when the insertion part is completely inserted into the inner hole of the input shaft, the second bolt half-hole on the shielding piece and the first bolt half-hole on the outer wall of the input shaft can be spliced into a complete bolt hole.

[0017] After the above technical scheme is adopted, the following beneficial effects are achieved:

[0018] In the utility model, before the bolt hole of the shielding piece is aligned with the bolt mounting hole on the fork, the shielding piece shields the bolt mounting hole on the fork, preventing the bolt from being mistakenly installed on the fork. Only when the input shaft and the fork are assembled in place, the bolt hole is aligned with the bolt mounting hole at this time, and the bolt can be inserted into the bolt mounting hole, realizing the installation between the fork and the input shaft, thereby preventing the mistaken assembly between the input shaft and the fork. BRIEF DESCRIPTION OF DRAWINGS

[0019] The disclosure of the present application will become more readily apparent from the following description. It is understood that these drawings are merely schematic and are not drawn to scale:

[0020] Figure 1 is a perspective view of the error-proof device in an embodiment of the present application;

[0021] Figure 2 is a state diagram when the fork shaft connecting assembly is not completely assembled in place in an embodiment of the present application;

[0022] Figure 3 is a partial cross-sectional view of Figure 2

[0023] Figure 4 is a state diagram when the fork shaft connecting assembly is completely assembled in place in an embodiment of the present application;

[0024] Figure 5 is an exploded view of the fork shaft connecting assembly in an embodiment of the present application.

[0025] Legend of reference signs:

[0026] First positioning member 1: insertion portion 11, step portion 12, inclined surface 13, arc surface 111, flat surface 112;

[0027] Second positioning member 2;

[0028] Shielding member 3: second bolt half-hole 31;

[0029] Input shaft 10: first bolt half-hole 101;

[0030] Fork member 20: bolt mounting hole 201, insertion hole 202, notch 203. DETAILED DESCRIPTION

[0031] The specific embodiments of the present application will be further described in conjunction with the accompanying drawings.

[0032] It is easily understood that, according to the technical scheme of the present application, a person skilled in the art can replace a variety of structural modes and implementation modes without changing the essential spirit of the present application. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical scheme of the present application, and should not be considered as the whole or as a limitation or restriction of the technical scheme of the present application.

[0033] ​The orientation terms mentioned or possibly mentioned in the present specification, such as up, down, left, right, front, back, front side, back side, top, bottom, etc., are defined with respect to the structure shown in the drawings, and are relative concepts, so they can be changed accordingly according to different positions and different use states. Therefore, these or other orientation terms should not be interpreted as restrictive terms.

[0034] In some embodiments of the utility model, as shown in Figure 1 The error-proofing device includes a first positioning member 1, a second positioning member 2, and a shielding member 3. The shielding member 3 is connected between the first positioning member 1 and the second positioning member 2. The first positioning member 1 is used for being inserted into the inner hole of the input shaft 10. The second positioning member 2 is used for being sleeved on the outside of the input shaft 10. The shielding member 3 is provided with a second bolt half-hole 31. The second bolt half-hole 31 and the first bolt half-hole 101 on the outer wall of the input shaft 10 can be combined into a complete bolt hole.

[0035] When the input shaft 10 is inserted into the fork 20, before the bolt hole is aligned with the bolt mounting hole 201 on the fork 20, the shielding member 3 is used for shielding the bolt mounting hole 201.

[0036] Specifically, as shown in Figure 1 The error-proofing device includes two positioning members, i.e., a first positioning member 1 and a second positioning member 2. The first positioning member 1 is used for being inserted into the inner hole of the input shaft 10 (see Figure 3 ). When the first positioning member 1 is inserted into position, the positioning between the first positioning member 1 and the input shaft 10 is achieved. The second positioning member 2 is used for being sleeved on the outside of the other side of the input shaft 10. The second positioning member 2 cooperates with the first positioning member 1 to achieve the installation of the input shaft 10.

[0037] The shielding member 3 is connected between the first positioning member 1 and the second positioning member 2. As shown in Figure 2 A first bolt half-hole 101 is formed on the outer wall of the input shaft 10. The shielding member 3 is provided with a second bolt half-hole 31. When the first positioning member 1 is inserted into position, the first bolt half-hole 101 and the second bolt half-hole 31 are combined into a complete bolt hole.

[0038] After the error-proofing device and the input shaft 10 are installed into position, the error-proofing device and the input shaft 10 are assembled with the fork 20.

[0039] As shown in Figure 2 When one end of the input shaft 10 is just inserted into the fork 20, but has not yet entered the set position. At this time, the shielding member 3 shields the bolt mounting hole 201 on the fork 20, and the bolt cannot be inserted into the bolt mounting hole 201, thereby avoiding the misinstallation of the bolt in the case that the input shaft is not inserted into the set position and is held by the two arms of the fork.

[0040] AsFigure 4 As shown, when the input shaft 10 is inserted to the set position, at this time the first bolt half-hole 101 and the second bolt half-hole 31 are combined into a complete bolt hole, and the bolt mounting hole 201 is aligned, the bolt can be inserted into the bolt mounting hole 201, realizing the connection of the input shaft 10 and the fork 20.

[0041] Therefore, the error-proofing device in the embodiment makes it possible to be connected by the bolt only when the input shaft 10 is inserted to the set position of the fork 20. It effectively prevents the misassembly of the input shaft 10 without being installed in place.

[0042] Further, as shown in the figure, Figure 1 The first positioning member 1 includes an insertion part 11 and a step part 12, and the step part 12 is connected with one end of the shielding member 3. When the insertion part 11 is completely inserted into the inner hole of the input shaft 10, the step part 12 is stopped outside the end of the input shaft 10.

[0043] Specifically, as shown in the figure, Figure 1 The cross-sectional area of the step part 12 is larger than that of the insertion part 11. Therefore, the insertion part 11 can be completely inserted into the inner hole of the input shaft 10, and the step part 12 is stopped outside the end of the input shaft 10.

[0044] As shown in the figure, Figure 3 The step part 12 contacts the edge of the end of the input shaft 10. The step part 12 can limit the depth of the insertion part 11 into the input shaft 10. When the step part 12 is in contact with the edge of the end of the input shaft 10, it means that the insertion part 11 has been inserted in place.

[0045] Further, as shown in the figure, Figure 1 The side of the insertion part 11 towards the shielding member 3 is provided with a slope surface 13. When the insertion part 11 is completely inserted into the inner hole of the input shaft 10, the slope surface 13 is in contact with the inner wall of the first bolt half-hole 101 on the input shaft 10.

[0046] As shown in the figure, Figure 2 Because the first bolt half-hole 101 is formed on the input shaft 10, the first bolt half-hole 101 forms a semicircular arc on the input shaft 10.

[0047] Therefore, the end of the insertion part 11 is provided with a slope surface 13, and the shape of the slope surface 13 is just the same as that of the inner wall of the first bolt half-hole 101. When the insertion part 11 is inserted to the point that the slope surface 13 is in contact with the inner wall of the first bolt half-hole 101, it means that the insertion part 11 has been inserted in place.

[0048] Further, as shown in the figure, Figure 1As shown, the insertion part 11 comprises two arc surfaces 111 and two flat surfaces 112, the two arc surfaces 111 are respectively located on the upper and lower sides of the insertion part 11, and the two flat surfaces 112 are respectively located on the left and right sides of the insertion part 11.

[0049] Specifically, the shapes of the two arc surfaces 111 match the shape of the inner hole of the input shaft 10, and the arc surfaces 111 play a guiding role during the insertion of the insertion part 11, and also prevent the insertion part 11 from shaking inside the input shaft 10.

[0050] The flat surface 112 does not contact the inner hole of the input shaft 10, reducing the friction between the insertion part 11 and the inner hole of the input shaft 10, facilitating the quick insertion of the insertion part 11.

[0051] Preferably, the insertion part 11 is a hollow structure, which can save materials and also facilitate reducing the weight of the error-proof device and reducing the influence of the error-proof device on the fork shaft connecting assembly.

[0052] Further, as shown in Figure 1 and Figure 5 , the shielding piece 3 is a flat plate structure, when the insertion part 11 is completely inserted into the inner hole of the input shaft 10, the second bolt half-hole 31 on the shielding piece 3 and the first bolt half-hole 101 on the outer wall of the input shaft 10 can be combined into a complete bolt hole.

[0053] Specifically, the shielding piece 3 is a thin sheet structure, when the error-proof device and the input shaft 10 are inserted into the fork 20 together, the shielding piece 3 enters the notch 203 on the fork 20 and shields the bolt mounting hole 201.

[0054] Further, as shown in Figure 1 , the second positioning piece 2 is a circular ring, and the second positioning piece 2 is in clearance fit with the outer wall of the input shaft 10.

[0055] The second positioning piece 2 is convenient to be sleeved on the outer wall of the input shaft 10, cooperates with the first positioning piece 1 to position the input shaft 10, and connects the shielding piece 3.

[0056] In some embodiments of the utility model, as shown in Figures 2-5 , the fork shaft connecting assembly comprises a fork 20 and an input shaft 10, the fork 20 is provided with an insertion hole 202, a notch 203 is formed on one side of the insertion hole 202, the fork 20 is also provided with a bolt mounting hole 201, and the fork shaft connecting assembly further comprises an error-proof device, when the input shaft 10 is inserted into the insertion hole 202 of the fork 20, the shielding piece 3 enters the notch 203 and shields the bolt mounting hole 201; when the bolt hole is aligned with the bolt mounting hole 201, the fork 20 and the input shaft 10 are connected by the bolt passing through the bolt mounting hole 201 and the bolt hole.

[0057] Specifically, the fork 20 is provided with an insertion hole 202 in the direction coaxial with the input shaft 10, and one end of the input shaft 10 is inserted into the insertion hole 202. The insertion hole 202 is provided with a longitudinal notch 203 below, and the shielding piece 3 is just inserted into the notch 203.

[0058] The fork 20 is provided with two bolt mounting holes 201 in the direction perpendicular to the input shaft 10, and the bolt mounting holes 201 are located on the side of the insertion hole 202. After the shielding piece 3 is inserted into the notch 203, the shielding piece 3 can shield the bolt mounting hole 201. Only when the bolt hole is aligned with the bolt mounting hole 201, the bolt mounting hole 201 is completely exposed, and the bolt can pass through the bolt mounting hole 201 and the bolt hole to connect the fork 20 and the input shaft 10.

[0059] In the utility model, before the bolt hole of the shielding piece is aligned with the bolt mounting hole on the fork, the shielding piece shields the bolt mounting hole on the fork, preventing the bolt from being mistakenly installed on the fork. Only when the input shaft and the fork are assembled in place, at this time the bolt hole is aligned with the bolt mounting hole, the bolt can be inserted into the bolt mounting hole, the installation between the fork and the input shaft is realized, thereby preventing the mistaken assembly between the input shaft and the fork.

[0060] The above only describes the principles and preferred embodiments of the utility model. It should be noted that for ordinary skilled persons in the art, on the basis of the principles of the utility model, a number of other variants can also be made, which should also be regarded as the protection scope of the utility model.

Claims

1. A mistake-proofing device, characterized in that, It includes a first positioning component, a second positioning component, and a blocking component. The blocking component is connected between the first positioning component and the second positioning component. The first positioning component is used to be inserted into the inner hole of the input shaft, and the second positioning component is used to be sleeved on the outside of the input shaft. The blocking component is provided with a second bolt half hole, and the second bolt half hole and the first bolt half hole on the outer wall of the input shaft can be combined to form a complete bolt hole. During the insertion of the input shaft into the fork, before the bolt hole aligns with the bolt mounting hole on the fork, the shielding member is used to block the bolt mounting hole.

2. The error-proofing device according to claim 1, characterized in that, The first positioning member includes an insertion part and a step part. The step part is connected to one end of the blocking member. When the insertion part is fully inserted into the inner hole of the input shaft, the step part stops outside the end of the input shaft.

3. The error-proofing device according to claim 2, characterized in that, The insertion part has a ramp on the side facing the shield. When the insertion part is fully inserted into the inner hole of the input shaft, the ramp abuts against the inner wall of the first bolt half hole on the input shaft.

4. The error-proofing device according to claim 3, characterized in that, The insertion part includes an arc-shaped surface and a flat surface. The two arc-shaped surfaces are located on the upper and lower sides of the insertion part, respectively, and the two flat surfaces are located on the left and right sides of the insertion part, respectively. The ramp surface is located at the end of one of the arc-shaped surfaces.

5. The error-proofing device according to claim 2, characterized in that, The shielding member has a flat plate structure. When the insertion part is fully inserted into the inner hole of the input shaft, the second bolt half hole on the shielding member and the first bolt half hole on the outer wall of the input shaft can be combined to form a complete bolt hole.

6. The error-proofing device according to claim 1, characterized in that, The second positioning element is an annular ring, and it is clearance-fitted with the outer wall of the input shaft.

7. A fork shaft connection assembly, comprising a fork and an input shaft, wherein the fork has an insertion hole, a notch is formed on one side of the insertion hole, and bolt mounting holes are provided on both sides of the fork, characterized in that, It also includes the error prevention device as described in claim 1, wherein when the input shaft is inserted into the insertion hole of the fork, the blocking member enters the notch and blocks the bolt mounting hole; when the bolt hole is aligned with the bolt mounting hole, the bolt passes through the bolt mounting hole and the bolt hole to connect the fork to the input shaft.

8. The fork shaft connection assembly according to claim 7, characterized in that, The first positioning member includes an insertion part and a step part. When the insertion part is fully inserted into the inner hole of the input shaft, the step part stops outside the end of the input shaft.

9. The fork shaft connection assembly according to claim 8, characterized in that, The insertion part has a ramp on the side facing the shield. When the insertion part is fully inserted into the inner hole of the input shaft, the ramp abuts against the inner wall of the first bolt half hole on the input shaft.

10. The fork shaft connection assembly according to claim 8, characterized in that, The shielding member has a flat plate structure. When the insertion part is fully inserted into the inner hole of the input shaft, the second bolt half hole on the shielding member and the first bolt half hole on the outer wall of the input shaft can be combined to form a complete bolt hole.

Images