Detection device and method

Abstract

The invention discloses a detection device and method, and belongs to the technical field of assembly detection devices. The detection device and method are used for detecting the assembly qualification of the end face spline. The detection device comprises a first shell, a detection assembly and a second shell, the first shell is provided with a first end and a second end which are opposite in the axial direction; the detection assembly comprises an actuating piece and a first indicating piece, and the actuating piece is located at the first end of the first shell and is configured to be capable of being located at a detection position and being actuated when the assembly qualification of the end face spline is detected; the first indicating piece is configured to send out a first indicating signal to indicate that the assembly is qualified when the actuating piece is actuated; the second shell is connected with the second end of the first shell and is configured to limit the position of the first shell so that the actuating piece can be located at the detection position. According to the detection device and method disclosed by the invention, the assembly qualification of the two parts for end face spline assembly can be accurately detected, so that the end face splines of the two parts are ensured to be assembled in place.

Description

Technical Field

[0001] The present application relates to the technical field of assembly detection devices, and in particular to a detection device and method. Background Art

[0002] In order to avoid abnormal noise at the mating point of the drive shaft and wheel hub bearing of electric vehicles, some models choose to use end face spline engagement to assemble the drive shaft and wheel hub bearing. That is, end face splines are respectively set on the end faces where the drive shaft and wheel hub bearing contact each other, and the engagement between the end face splines achieves a tighter transmission between the drive shaft and the wheel hub bearing.

[0003] However, since the meshing end faces of the drive shaft and the wheel hub bearing are located in the shaft hole of the steering knuckle, the steering knuckle will block the meshing end faces and make them invisible during the end spline assembly. Therefore, it is difficult for the operator to check whether the end splines are properly assembled after the drive shaft and the wheel hub bearing are fixed, and a false meshing state of tooth top to tooth top may easily occur, which will lead to the inability to transmit torque between the drive shaft and the wheel hub bearing after the vehicle is off the assembly line, and abnormal noise and damage may easily occur, increasing parts costs and labor costs. Summary of the Invention

[0004] The embodiments of the present application provide a detection device and method that can accurately detect whether the end splines of two components are successfully engaged when the end splines of the two components are assembled, thereby ensuring that the end splines of the two components are assembled in place. The technical solution is as follows:

[0005] In a first aspect, a detection device is provided for detecting the assembly conformity of an end face spline, the detection device comprising a first shell, a detection assembly and a second shell; the first shell has a first end and a second end opposite to each other in the axial direction; the detection assembly comprises an actuator and a first indicator, the actuator is located at the first end of the first shell, and is configured to be located in a detection position and to be actuated when detecting the assembly conformity of the end face spline; the first indicator is configured to emit a first indication signal when the actuator is actuated, the first indication signal being used to indicate that the assembly is conformable; the second shell is connected to the second end of the first shell, and is configured to limit the position of the first shell so that the actuator is located in the detection position.

[0006] Based on the above scheme, the detection device has a detection component, a first shell and a second shell. The detection component includes an actuator and a first indicator. The actuator is installed on the first shell. When the actuator is actuated, the first indicator will send a first indication signal. The second shell can limit the actuator to ensure that it can be actuated. When using the detection device to detect whether the end spline assembly between two components is qualified, it is necessary to first position the actuator through the second shell so that the actuator is in the detection position, and then assemble the end splines of the two components. If the end splines of the two components are engaged with each other after assembly, the actuator will be actuated, thereby triggering the first indicator to send a first indication signal to prompt the assembler that the end splines of the two components are qualified. If the end splines of the two components are not engaged with each other after assembly, the actuator will not be actuated, and the first indicator will not send a first indication signal, so that the assembler can know that the end splines of the two components are unqualified and need to be reassembled. Therefore, this solution can accurately detect whether the end splines of two components that need to be assembled with end splines are successfully engaged after assembly. The detection device has a simple structure and is easy to operate, and the detection results are highly accurate, thereby ensuring that the end splines of the two components are assembled in place and avoiding unnecessary cost losses and parts damage.

[0007] In one possible implementation, the first shell has a first inner cavity, and an opening is provided on the shell wall of the first shell, and the opening is connected to the first inner cavity; the actuator includes an elastic part and a pressing part, and the two ends of the elastic part are respectively connected to the first shell and the pressing part, and are configured so that at least a part of the pressing part is located on the side of the opening away from the first inner cavity; the pressing part can be retracted to the first inner cavity through the opening under the actuation of external force.

[0008] Based on the above possible implementation, the actuator includes an elastic portion and a pressing portion, wherein in the absence of external force, the pressing portion is elastically supported by the elastic portion, and at least a portion thereof extends out of the first shell through the opening; when actuated by an external force, the pressing portion can retract through the opening into the first inner cavity of the first shell to trigger the first indicator. This arrangement can combine the actuation method of the actuator with the end face spline assembly scenario, utilizing the movement of the component to be detected during the end face spline assembly process to actuate the pressing portion, causing it to retract into the first inner cavity of the first shell and trigger the first indicator to emit a first indication signal. On the one hand, this simplifies the operation of pressing the actuator, and on the other hand, since the movement of the component to be detected directly determines whether the actuator can be actuated, the detection reliability is improved.

[0009] In one possible implementation, the shell wall is the outer peripheral wall of the first shell, and a groove is provided on the outer peripheral wall. The groove penetrates the first shell along the tangential direction, and one side of the groove extends along the axial direction of the first shell to the end wall of the first end; the opening is located at the bottom wall of the groove, and at least a portion of the pressing portion protrudes from the bottom wall of the groove, and the protruding height is less than or equal to the depth of the groove.

[0010] Based on the above possible implementation method, a groove is formed on the outer peripheral wall of the first shell, and the bottom wall of the groove is flat. On the one hand, it extends tangentially to the edge of the first shell, and on the other hand, it extends axially to the end wall of the first end. Therefore, when the detection device contacts the mating surface on the part to be detected through the bottom wall of the groove, the contact area between the two is larger and the contact is more stable, thereby ensuring the detection precision and accuracy. Generally speaking, when performing the end face spline assembly qualification test, the first shell needs to be inserted into the corresponding detection hole for positioning. This solution can avoid interference between the protruding pressing part and the hole wall of the detection hole, thereby preventing the first shell from being inserted into the detection hole, by protruding the pressing part on the bottom wall of the groove and making the protruding height of the pressing part from the bottom wall less than or equal to the depth of the groove.

[0011] In one possible implementation, when the actuating member is located at the detection position, a first fitting distance exists between the first surface of the pressing portion and the tooth top of the first end face spline of the first member to be detected, and the first fitting distance is greater than the first distance and less than or equal to the second distance;

[0012] In which, the first surface is the surface of the pressing portion away from the bottom wall of the groove; the first distance is the distance between the mating surface of the second part to be detected and the tooth top of the first end face spline in the meshing state, and the mating surface is the surface on the second part to be detected for applying pressure to the first surface, wherein in the meshing state, the key teeth of the second end face spline of the second part to be detected are located in the tooth groove of the first end face spline; the second distance is the distance between the mating surface of the second part to be detected and the tooth top of the first end face spline in the top tooth state, wherein in the top tooth state, the tooth top of the second end face spline contacts the tooth top of the first end face spline.

[0013] Based on the above possible implementation methods, by setting the first fitting distance between the first surface of the pressing part and the tooth top of the first end face spline to be greater than the first distance, it is ensured that in the meshing state, the fitting surface of the second part to be detected can apply pressure to the first surface of the pressing part and actuate at least a portion of the pressing part to retract radially into the first inner cavity of the first shell, thereby ensuring that the first indicator can be effectively triggered to issue the first indication information; by setting the first fitting distance between the first surface of the pressing part and the tooth top of the first end face spline to be less than or equal to the second distance, it is ensured that in the top tooth state, the fitting surface of the second part to be detected will not apply pressure to the first surface of the pressing part, thereby not actuating the pressing part to retract, and not triggering the first indicator to issue the first indication signal. Therefore, this solution ensures that the first indicator has different performances in the meshing state and the top tooth state of the end face spline, thereby enabling assemblers to more easily and easily distinguish whether the end face spline assembly is qualified.

[0014] In a possible implementation, a protruding height of the pressing portion from the bottom wall of the groove is less than or equal to an engagement depth of the first end face spline and the second end face spline.

[0015] Based on the above possible implementation methods, since the maximum retraction stroke of the pressing portion that can be effectively actuated is obviously less than or equal to its protruding height relative to the bottom wall, when the protruding height is less than or equal to the meshing depth of the first end face spline and the second end face spline, it can be ensured that when the end face spline switches from the top tooth state to the meshing state, the pressing portion can fully reach the maximum retraction stroke under the action of external force, thereby ensuring that the pressing portion can be effectively actuated. Moreover, since the protruding height is less than the meshing depth of the first end face spline and the second end face spline, when the end face spline is in the meshing state, on the one hand, the pressing portion is completely retracted into the first inner cavity. At this time, the first shell can protect the pressing portion and prevent the pressing portion from being damaged due to excessive force; on the other hand, the mating surface on the second detection member contacts the flat bottom wall of the groove, thereby ensuring the stability and reliability of the contact fit.

[0016] In a possible implementation, the shell wall is an end wall of the first end, the opening is located on the end wall, and at least a portion of the pressing portion protrudes from the end wall.

[0017] Based on the above possible implementation methods, the pressing portion is protruding from the end wall of the first end of the first shell. In this case, the mating surface of the second part to be detected only contacts the pressing portion and does not contact the first shell. Therefore, there is no need to provide a structure on the first shell for mating with the mating surface of the second part to be detected, thereby making the structure of the first shell simpler.

[0018] In one possible implementation, when the actuating member is located at the detection position, a second fitting distance is provided between the second surface of the pressing portion and the tooth top of the first end face spline of the first member to be detected, and the second fitting distance is greater than the first distance and less than or equal to the second distance;

[0019] In which, the second surface is the surface of the pressing portion away from the bottom wall of the groove; the first distance is the distance between the mating surface of the second part to be detected and the tooth top of the first end face spline in the meshing state, and the mating surface is the surface on the second part to be detected for applying pressure to the second surface, wherein in the meshing state, the key teeth of the second end face spline of the second part to be detected are located in the tooth grooves of the first end face spline; the second distance is the distance between the mating surface of the second part to be detected and the tooth top of the first end face spline in the top tooth state, wherein in the top tooth state, the tooth top of the second end face spline contacts the tooth top of the first end face spline.

[0020] Based on the above possible implementation methods, by setting the second fitting distance between the second surface of the pressing part and the tooth top of the first end face spline to be greater than the first distance, it is ensured that in the meshing state, the fitting surface of the second part to be detected can apply pressure to the second surface of the pressing part, and actuate at least a part of the pressing part to retract along the axial direction of the first shell into the first inner cavity, thereby ensuring that the first indicator can be effectively triggered to send out the first indication information; by setting the second fitting distance between the second surface of the pressing part and the tooth top of the first end face spline to be less than or equal to the second distance, it is ensured that in the top tooth state, the fitting surface of the second part to be detected will not apply pressure to the second surface of the pressing part, thereby not actuating the pressing part to retract, and not triggering the first indicator to send out the first indication signal. Therefore, this solution ensures that the first indicator has different performances in the meshing state and the top tooth state of the end face spline, thereby enabling assemblers to more easily and easily distinguish whether the end face spline assembly is qualified.

[0021] In a possible implementation, the first shell has a first projection along the axial direction, the second shell has a second projection along the axial direction, and at least a portion of the second projection is located outside the first projection.

[0022] Based on the above possible implementation, the second housing has a portion that radially extends beyond the first housing, thereby forming a stepped surface between the first and second housings. When the first housing is inserted into the corresponding inspection hole, this stepped surface acts as a limit stop against the second housing, allowing the actuator to be positioned in the inspection position, thereby ensuring the feasibility of end spline assembly compliance testing.

[0023] In one possible implementation, at least part of the circumferential profile of the second shell has a specific shape, and the specific shape is used to indicate the detection direction, wherein the actuator is configured to face the detection direction to accept actuation when detecting the conformity of the end face spline assembly; and / or, an indicator mark is provided on the second shell, and the indicator mark is used to indicate the detection direction.

[0024] Based on the possible implementations described above, the detection direction can be determined based on the specific shape of the second housing or by an indicator mark provided on the second housing. By orienting the actuator toward this detection direction when inspecting the end face spline assembly for compliance, it is ensured that the actuator can be actuated by an external force from this detection direction. Therefore, this solution "visualizes" the position of the actuator on the first housing, making it easier to adjust the actuator's detection direction, reducing the difficulty and complexity of installing the detection device and improving the feasibility and operability of the detection.

[0025] In one possible implementation, the first shell is a cylinder; the second shell includes a first part and a second part, the first part is a semi-cylinder, and the second part is a rectangular solid, and the rectangular surface of the semi-cylinder is connected to the surface of the rectangular solid; wherein the diameter of the semi-cylinder is greater than the diameter of the cylinder, and the semi-cylinder and the cylinder are coaxial.

[0026] Based on the above possible implementation methods, the first shell is a cylinder, the second part has a semi-cylindrical part, and the diameter of the semi-cylinder is larger than the diameter of the cylinder, and the axis of the semi-cylinder coincides with the axis of the cylinder. Therefore, on the one hand, a step surface is formed between the semi-cylinder and the cylinder to facilitate the limiting stop of the second shell during detection; on the other hand, the coaxial setting method makes it relatively easy to determine and accurately adjust the position of the actuator after the first shell is inserted into the detection hole, reducing the difficulty of installation and arrangement of the detection device.

[0027] In one possible implementation, the detection component also includes a detection circuit; the first indicator is an electrical indicator element for emitting an acoustic signal or a light signal, and the electrical indicator element is connected in the detection circuit; the actuator is a first switching element, which is connected in the detection circuit and is configured to operate under the actuation of the external force to turn on the electrical indicator element.

[0028] Based on the above possible implementation, the actuator and the first indicator are both electronic components disposed within the detection circuit, and the actuator and the first indicator are electrically connected. When the actuator is not actuated, the first indicator is disconnected from the circuit and does not emit a first indication signal. When the actuator is actuated, the first indicator is connected to the circuit and emits a first indication signal. Compared to achieving linkage through force transmission between the actuator and the first indicator, in this solution, linkage between the actuator and the first indicator is achieved through the transmission of electrical signals, resulting in a faster and more reliable response. Furthermore, the transmission of electrical signals is easier to control and less susceptible to external environmental factors.

[0029] In a possible implementation, the detection device is configured to detect the fit between the first end face spline of the wheel hub bearing and the second end face spline of the drive shaft in the vehicle.

[0030] Based on the above possible implementation methods, when the drive shaft and the hub bearing are assembled with end splines, the detection device can be used to detect whether the end splines are assembled in place to avoid the end spline top tooth state, thereby ensuring that the torque can be effectively transmitted between the drive shaft and the hub bearing, avoiding abnormal noise and damage at the end spline mating point, and reducing the parts cost and labor cost caused by the end spline not being in place in the related technology.

[0031] In one possible implementation, the first part to be detected is a wheel hub bearing of a vehicle, the second part to be detected is a drive shaft of the vehicle, and the first housing is configured to be inserted into a detection hole on a side wall of a steering knuckle so that the actuating member is located at the detection position;

[0032] The detection device is configured to meet at least one of the following conditions:

[0033] The axial length of the first housing is greater than a third distance and less than or equal to a fourth distance, the third distance being the distance between the insertion end of the detection hole and the shaft shoulder of the drive shaft, and the fourth distance being the distance between the insertion end of the detection hole and the shaft head of the drive shaft, wherein the insertion end of the detection hole is located on the outer side wall of the steering knuckle;

[0034] Along the axial direction of the first shell, a fifth distance is defined between a side of the groove away from the end wall of the first end of the first shell and the end wall of the second end of the first shell, and the fifth distance is greater than zero and less than or equal to the third distance;

[0035] Along the axial direction of the first shell, there is a sixth distance between the third surface of the pressing portion and the end wall of the second end of the first shell, and the sixth distance is greater than the third distance and less than or equal to the axial length of the first shell, wherein the third surface is the surface of the pressing portion away from the second shell.

[0036] Based on the above possible implementation, when the detection device is used in the end face spline assembly between a wheel hub bearing and a drive shaft of a vehicle, the detection device is installed through a detection hole provided on the side wall of the steering knuckle. The axial length of the first housing is greater than the third distance between the insertion end of the detection hole and the shoulder of the drive shaft to ensure that the actuator located at the first end of the first housing can be positioned in the insertion direction of the drive shaft for mating with the drive shaft. The axial length of the first housing is also less than or equal to the fourth distance between the insertion end of the detection hole and the shaft end of the drive shaft to prevent the first end of the first housing from interfering with the insertion path of the drive shaft.

[0037] The fifth distance is the shortest axial distance between the groove and the end wall of the second end of the first shell. By making the fifth distance greater than zero and less than or equal to the third distance, it can be ensured that the mating surface on the drive shaft will not be directly opposite the outer peripheral wall of the first shell, but will only be directly opposite the bottom wall of the groove. Therefore, it avoids the situation where the mating surface on the drive shaft abuts against the outer peripheral wall of the first shell and the pressing part cannot be actuated, thereby ensuring the reliability of the press-actuation.

[0038] By making the pressing portion away from the third surface of the second shell and having a sixth distance between the end wall of the second end of the first shell wall, and making the sixth distance greater than the third distance and less than or equal to the axial length of the first shell, it is ensured that the pressing portion is located on the outer peripheral wall of the first shell, and at least a part of the pressing portion is opposite to the mating surface on the drive shaft. Therefore, when the actuator is located in the detection position, if the second end face spline of the drive shaft can engage with the first end face spline of the hub bearing, the mating surface on the drive shaft will inevitably actuate the pressing portion, thereby simplifying the operation of actuating the pressing portion and ensuring the effectiveness of the actuation.

[0039] In one possible implementation, the first part to be detected is a wheel hub bearing of a vehicle, the second part to be detected is a drive shaft of the vehicle, and the first housing is configured to be inserted into a detection hole on a side wall of a steering knuckle so that the actuating member is located at the detection position;

[0040] The detection device is configured to meet at least one of the following conditions:

[0041] The axial length of the first housing is greater than zero and less than or equal to a third distance, wherein the third distance is the distance between the insertion end of the detection hole and the shoulder of the drive shaft, wherein the insertion end of the detection hole is located on the outer side wall of the steering knuckle;

[0042] Along the axial direction of the first shell, there is a seventh distance between the fourth surface of the pressing portion and the end wall of the second end of the first shell, the seventh distance is greater than the third distance and less than or equal to the fourth distance, the fourth distance is the distance between the insertion end of the detection hole and the shaft head of the drive shaft, and the fourth surface is the surface of the pressing portion away from the first shell.

[0043] Based on the above possible implementation, when the detection device is used in the face spline assembly between a wheel hub bearing and a drive shaft of a vehicle, the detection device is installed through a detection hole provided on the side wall of the steering knuckle. The axial length of the first housing is greater than zero and less than or equal to the third distance between the insertion end of the detection hole and the shoulder of the drive shaft. This ensures that the first end of the first housing does not extend into the insertion path of the drive shaft, thereby preventing the first end of the first housing from interfering with the shoulder of the drive shaft, thereby hindering the insertion of the drive shaft and, in turn, hindering the face spline assembly between the wheel hub bearing and the drive shaft.

[0044] By making the pressing portion away from the fourth surface of the first shell and having a seventh distance between the end wall of the second end of the first shell wall, and making the seventh distance greater than the third distance and less than or equal to the fourth distance between the insertion end of the detection hole and the shaft head of the drive shaft, it is ensured that at least a part of the pressing portion is opposite to the mating surface on the drive shaft. Therefore, when the actuator is in the detection position, if the second end face spline of the drive shaft can engage with the first end face spline of the hub bearing, the mating surface on the drive shaft will inevitably actuate the pressing portion, thereby simplifying the operation of actuating the pressing portion and ensuring the effectiveness of the actuation.

[0045] In a second aspect, a detection method is provided, which is applied to the detection device described in the first aspect, and is used to detect the assembly conformity between the first end face spline of the wheel hub bearing and the second end face spline of the drive shaft in a vehicle, and the method includes:

[0046] Inserting the first housing into the detection hole on the side wall of the steering knuckle until the second housing abuts against the side wall of the steering knuckle, so that the actuator is located in the detection position;

[0047] In response to the drive shaft being inserted into the shaft hole of the steering knuckle and abutting against the wheel hub bearing, and the first indicator sending the first indication signal, it is determined that the first end face spline of the wheel hub bearing and the second end face spline of the drive shaft are assembled properly.

[0048] Based on the above scheme, when assembling the wheel hub bearing and the drive shaft of the vehicle, the detection device is first installed in the detection hole on the side wall of the steering knuckle, and the actuator is limited by the second shell so that it is in the detection position; then the drive shaft is inserted into the shaft hole of the steering knuckle so that it is against the wheel hub bearing. When the first end face spline of the wheel hub bearing and the second end face spline of the drive shaft are in a meshing state, the actuator is actuated and the first indicator sends a first indication signal, thereby determining that the end face spline is assembled properly. Therefore, when the end face spline mating part of the wheel hub bearing and the drive shaft is not visible, this scheme accurately detects whether the first end face spline of the wheel hub bearing and the second end face spline of the drive shaft are successfully meshed through the detection device. The operation is simple and the detection result is accurate, which ensures that the end face splines of the wheel hub bearing and the drive shaft are assembled in place, avoiding unnecessary cost losses and parts damage.

[0049] In one possible implementation, the method further includes: in response to the drive shaft being inserted into the shaft hole of the steering knuckle and abutting against the wheel hub bearing, and the first indicator not issuing the first indication signal, determining that the first end face spline of the wheel hub bearing and the second end face spline of the drive shaft are unqualified in assembly.

[0050] Based on the above possible implementation, after inserting the drive shaft into the shaft hole of the steering knuckle so that it abuts against the wheel hub bearing, if the first end face spline of the wheel hub bearing and the second end face spline of the drive shaft are in the top tooth state, the actuator will not be actuated, and the first indicator will not emit the first indication signal, thereby determining that the end face spline assembly is unqualified. It can be seen that in the case of unqualified end face spline assembly, the first indicator has a completely different performance than in the case of qualified assembly, thereby achieving the same prompt effect, avoiding the cost loss and part damage caused by improper assembly of the end face spline of the wheel hub bearing and the drive shaft.

[0051] In one possible implementation, after determining that the first end face spline of the hub bearing and the second end face spline of the drive shaft are unqualified in assembly, the method further includes: in response to the hub bearing being rotated so that the first indicator member sends the first indication signal, determining that the first end face spline of the hub bearing and the second end face spline of the drive shaft are qualified in assembly.

[0052] Based on the above possible implementation methods, after determining that the assembly of the end splines of the wheel hub bearing and the drive shaft is unqualified, the assembler can adjust the position of the first end spline of the wheel hub bearing, or reassemble the end splines of the wheel hub bearing and the drive shaft, thereby ensuring that the end splines of the wheel hub bearing and the drive shaft are assembled in place.

[0053] Based on the implementation methods provided in the above aspects, this application can also be further combined to provide more implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 is a structural schematic diagram of a detection device provided in an embodiment of the present application;

[0055] Figure 2 is an exploded view of a detection device provided in an embodiment of the present application;

[0056] Figure 3 yes Figure 2 A schematic structural diagram of a cross section of the detection device shown;

[0057] Figure 4 is a structural diagram of another detection device provided in an embodiment of the present application;

[0058] Figure 5 yes Figure 4 The schematic diagram of the arrangement of the detection device shown in the first usage scenario;

[0059] Figure 6 yes Figure 5 A magnified view of the structure at point A;

[0060] Figure 7 yes Figure 4 The schematic diagram of the arrangement of the detection device shown in the second usage scenario;

[0061] Figure 8 yes Figure 7 A magnified view of the structure at B in the middle;

[0062] Figure 9 is a partial cross-sectional view of another detection device provided in an embodiment of the present application;

[0063] Figure 10 Schematic diagram of the structure of another detection device provided in an embodiment of the present application;

[0064] Figure 11 yes Figure 10 The schematic diagram of the arrangement of the detection device shown in the first usage scenario;

[0065] Figure 12 yes Figure 11 A magnified view of the structure at C in the middle;

[0066] Figure 13 yes Figure 10 The schematic diagram of the arrangement of the detection device shown in the second usage scenario;

[0067] Figure 14 yes Figure 13 A magnified view of the structure at D in the middle;

[0068] Figure 15 yes Figure 2A schematic projection diagram of the detection device along the axial direction of the first shell;

[0069] Figure 16 is a schematic end view of the second housing provided in an embodiment of the present application;

[0070] Figure 17 is a circuit diagram of a detection circuit provided in an embodiment of the present application;

[0071] Figure 18 This is a circuit diagram of another detection circuit provided by an embodiment of the present application when the first branch is turned on;

[0072] Figure 19 This is a circuit diagram of another detection circuit provided by an embodiment of the present application when the second branch is turned on;

[0073] Figure 20 This is a flow chart of a detection method provided in an embodiment of the present application.

[0074] Reference numerals:

[0075] 1. First housing; 11. First end; 111. End wall; 12. Second end; 13. First inner cavity; 14. Opening; 15. Peripheral wall; 16. Groove; 161. Bottom wall; 17. First projection;

[0076] 2. Detection assembly; 21. Actuating member; 211. Elastic portion; 2111. Rubber spring; 2112. Coil spring; 2113. Shrapnel; 212. Pressing portion; 2121. First surface; 2122. Second surface; 2123. Third surface; 2124. Fourth surface; 22. First indicator; 221. Indicator light; 222. Buzzer; 23. Detection circuit; 231. Main circuit; 232. First branch circuit; 233. Second branch circuit; 24. Second switch element; 25. Second indicator; 26. Power supply;

[0077] 3. Second shell; 31. Specific shape; 32. Indicator mark; 33. Second projection; 34. First part; 35. Second part;

[0078] 4. First part to be tested; 41. First end face spline;

[0079] 5. Second part to be inspected; 51. Second end face spline; 52. Shaft head; 53. Shaft shoulder; 531. Mating surface. DETAILED DESCRIPTION

[0080] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0081] This embodiment relates to a detection device, which is generally used in the end face spline assembly operation scenario of two components, or the maintenance and rework operation scenario of components based on the end face spline assembly, to meet the end face spline assembly qualification detection requirements. When the detection device is used to perform the end face spline assembly qualification detection on two components and it is determined that the assembly is qualified, it means that the end face splines of the two components are engaged with each other and assembled in place; when the detection device is used to perform the end face spline assembly qualification detection on two components and it is determined that the assembly is unqualified, it means that the end face splines of the two components are not engaged, may be in the top tooth state, and are not assembled in place. Therefore, the detection device can assist assemblers or maintenance personnel in detecting the end face spline assembly status of two components, thereby ensuring that the end face splines of the two components are assembled in place, avoiding cost losses and parts damage caused by inadequate assembly.

[0082] The following introduces the implementation method and related structural features of the detection device provided in the embodiment of the present application.

[0083] like Figure 1 The figure shows a schematic diagram of the structure of a detection device provided in an embodiment of the present application, wherein Figure 1 The internal structure of the detection device is shown in dotted lines. Figure 1 As shown, the detection device includes a first shell 1, a detection assembly 2 and a second shell 3, wherein the first shell 1 is axial as a whole, having a first end 11 and a second end 12 opposite to each other in the axial direction; the detection assembly 2 includes an actuator 21 and a first indicator 22, the actuator 21 is located at the first end 11 of the first shell 1, and the first indicator 22 is installed on the first shell 1 or the second shell 3; the second shell 3 is connected to the second end 12 of the first shell 1.

[0084] In some examples, when performing an end face spline assembly qualification test, the actuator 21 can be located in a testing position under the limiting action of the second housing 3. The actuator 21 located in the testing position can be actuated, for example, by an external force. The first indicator 22 is connected to the actuator 21. When the actuator 21 is actuated, the first indicator 22 is triggered to emit a first indication signal, which is used to indicate that the end face spline assembly is qualified. The actuator 21 and the first indicator 22 can be connected, for example, by a mechanical connection, an electrical connection, or other connection methods such as magnetic induction; the first indication signal can be at least one of an acoustic signal, an optical signal, an electrical signal, and a force signal.

[0085] For example, Figure 1 As shown, the actuator 21 is located at the first end 11 of the first housing 1, and the first indicator 22 is located at the end of the second housing 3 away from the first housing 1. When performing the end face spline assembly qualification test, as shown in FIG. Figure 5 and Figure 7As shown, the first end 11 of the first housing 1 can be placed near the mating point of the end face spline, and the actuator 21 is located in the detection position. At this time, the first indicator 22 is set at a position farther away from the mating point of the end face spline and can be placed within the operator's field of vision. Since the actuator 21 in the detection position is actuated, it triggers the first indicator 22 to emit a first indication message. Therefore, if the operator cannot directly visually observe the mating point of the end face spline, he or she can determine whether the end face spline is assembled properly by observing whether the first indicator 22 emits the first indication message. This solves the problem in the related art of being unable to determine whether the end face spline is assembled successfully due to the inability to directly visually observe the mating point of the end face spline.

[0086] In some examples, the first shell 1 is a hollow cavity structure with a first inner cavity 13. An opening 14 is also provided on the shell wall of the first shell 1, and the first inner cavity 13 is connected to the outside through the opening 14. The location of the opening 14 on the first shell 1 can be selected according to actual needs, for example, see Figures 2 to 4 , the opening 14 can be provided on the outer peripheral wall 15 of the first housing 1; or, see Figures 9 and 10 The opening 14 may also be provided on the end wall 111 of the first shell 1 .

[0087] The actuator 21 is mounted on the first housing 1 and passes through the opening 14. The actuator 21 can move under the action of an external force to extend and retract relative to the first inner cavity 13 of the first housing 1 through the opening 14. In some examples, such as Figure 3 and Figure 4 As shown, the actuator 21 may include an elastic portion 211 and a pressing portion 212, one end of the elastic portion 211 being connected to the first shell 1, and the other end of the elastic portion 211 being connected to the pressing portion 212. When the actuator 21 is not actuated by an external force, the elastic portion 211 can elastically support the pressing portion 212, so that at least a portion of the pressing portion 212 extends through the opening 14 to the outside of the first shell 1 to facilitate actuation; when the actuator 21 is actuated by an external force, at least a portion of the pressing portion 212 retracts into the first inner cavity 13 through the opening 14 under the action of the external force, and at the same time, the elastic portion 211 undergoes elastic deformation; after the external force is removed, at least a portion of the pressing portion 212 extends again through the opening 14 to the outside of the first shell 1. Therefore, in the detection device provided in this example, the pressing part 212 is elastically supported by the elastic part 211. On the one hand, it can avoid erroneous indications caused by accidental retraction of the pressing part 212. On the other hand, after each detection is completed, the pressing part 212 will return to the position before the detection, so repeated detection and use can be achieved.

[0088] In some examples, such as Figure 2As shown, the elastic portion 211 can be a rubber spring 2111, which is housed in the first inner cavity 13. One end of the rubber spring 2111 is connected to the first shell 1 for fixation; the other end of the rubber spring 2111 is connected to the pressing portion 212. The rubber spring 2111 is a highly elastic body with a low elastic modulus, and will undergo significant elastic deformation when loaded. Therefore, when the pressing portion 212 is actuated by an external force, the rubber spring 2111 undergoes elastic deformation, causing at least a portion of the pressing portion 212 to retract into the first inner cavity 13. When the external force is removed, the rubber spring 2111 returns to its original shape, so that at least a portion of the pressing portion 212 is located on the side of the opening 14 away from the first inner cavity 13.

[0089] In other examples, such as Figure 3 As shown, the elastic portion 211 can be a coil spring 2112, such as a metal compression spring or a compression spring 2112 made of other materials. The coil spring 2112 is accommodated in the first inner cavity 13, and the cross-sectional area of the coil spring 2112 is larger than the opening area of the opening 14 to prevent the coil spring 2112 from escaping from the first inner cavity 13 through the opening 14; one end of the coil spring 2112 abuts against the cavity wall of the first inner cavity 13 surrounding the opening 14, and is connected to the pressing portion 212, so that a portion of the pressing portion 212 is located on the side of the opening 14 away from the first inner cavity 13; the other end of the coil spring 2112 abuts against the cavity wall of the first inner cavity 13 opposite to the opening 14, and the coil spring 2112 is in an elastically compressed state in the first inner cavity 13. When the pressing portion 212 is actuated by an external force, the elastic compression of the coil spring 2112 increases, causing at least a portion of the pressing portion 212 to retract into the first inner cavity 13; when the external force is removed, the coil spring 2112 again rests against the cavity wall of the first inner cavity 13 surrounding the opening 14, so that the pressing portion 212 extends from the opening 14.

[0090] In other examples, such as Figure 4 As shown, the elastic portion 211 can be a spring 2113, such as a metal spring. The spring 2113 is housed in the first inner cavity 13 or in the opening 14. The first end 11 of the spring 2113 is connected to the first shell 1 for fixation, and the second end 12 is suspended in the air, wherein the first end 11 and the second end 12 are opposite to each other. The pressing portion 212 is located on the side of the spring 2113 facing away from the first inner cavity 13 and is connected to the second end 12 of the spring 2113. When the pressing portion 212 is actuated by an external force, the spring 2113 undergoes elastic deformation, causing at least a portion of the pressing portion 212 to retract into the first inner cavity 13. When the external force is removed, the spring 2113 rebounds, causing the pressing portion 212 to extend from the opening 14.

[0091] It should be noted that the structure of the elastic portion 211 is not limited to the above three types, and this embodiment does not make any specific restrictions on this. It is sufficient to ensure that the elastic portion 211 can elastically support the pressing portion 212, so that at least a portion of the pressing portion 212 is located on the side of the opening 14 away from the first inner cavity 13 when not actuated by external force, and can be elastically deformed and drive at least a portion of the pressing portion 212 to retract into the first inner cavity 13 when actuated by external force.

[0092] The installation position of the actuator 21 on the first housing 1 matches the setting position of the opening 14 on the first housing 1, so that the actuator 21 can be extended and retracted relative to the first inner cavity 13 through the opening 14. Figures 2 to 4 As shown, the opening 14 is provided on the outer peripheral wall 15 of the first shell 1. Specifically, a groove 16 is provided on the outer peripheral wall 15 of the first shell 1. The groove 16 penetrates the first shell 1 along the tangential direction, and one side of the groove 16 extends along the axial direction of the first shell 1 to the end wall 111 of the first end 11. The opening 14 is located on the bottom wall 161 of the groove 16.

[0093] Optionally, the groove 16 is formed by cutting a portion of the first housing 1 from the end wall 111 of the first end 11. The groove 16 includes a bottom wall 161 and a side wall. The bottom wall 161 and the side wall are perpendicular to each other, wherein the bottom wall 161 is flat, and the plane on which the bottom wall 161 lies is parallel to the axial direction of the first housing 1. The opening 14 is provided on the flat bottom wall 161, and the opening area is smaller than the area of the bottom wall 161. The first inner cavity 13 is connected to the opening 14, and at least a portion of the pressing portion 212 extends through the opening 14 to the side of the opening 14 away from the first inner cavity 13. That is, at least a portion of the pressing portion 212 protrudes from the bottom wall 161 of the groove 16.

[0094] The protruding height of the pressing portion 212 relative to the bottom wall 161 of the groove 16 is less than or equal to the depth of the groove 16. The depth of the groove 16 refers to the distance between the bottom wall 161 of the groove 16 and the outer peripheral wall 15 of the first shell 1 along the protruding direction of the pressing portion 212. In some examples, for example Figure 2 As shown in , the outer peripheral wall 15 of the first shell 1 is cylindrical, so the groove 16 provided on the outer peripheral wall 15 may have different depths at different positions along the tangential direction, and the closer to the middle position of the bottom wall 161, the deeper the depth of the groove 16, and the closer to the two side edges of the bottom wall 161, the shallower the depth of the groove 16. Generally speaking, the opening 14 is located at the middle position of the bottom wall 161 of the groove 16 in the tangential direction. It should be noted that the "tangential", "axial" and "radial" mentioned in the embodiments of the present application, unless otherwise specified, all refer to the "tangential", "axial" and "radial" of the first shell 1.

[0095] Since the protruding height of the pressing portion 212 does not exceed the depth of the groove 16, that is, the protruding height of the pressing portion 212 in the radial direction does not exceed the outer peripheral wall 15 of the first shell 1, the groove 16 actually serves to accommodate the portion of the pressing portion 212 that protrudes relative to the bottom wall 161 of the groove 16, thereby preventing the pressing portion 212 from being too high and hindering the assembly and cooperation of the first shell 1 with other components during the end face spline detection process.

[0096] like Figures 5 to 8 As shown, for the detection device provided with a pressing portion 212 on the outer peripheral wall 15 of the first shell 1, when performing end face spline detection, the protruding direction of the pressing portion 212 from the bottom wall 161 of the groove 16 is perpendicular to the spline matching end faces of the first to-be-detected part 4 and the second to-be-detected part 5, that is, the protruding direction of the pressing portion 212 is parallel to the axial direction of the first to-be-detected part 4 and parallel to the axial direction of the second to-be-detected part 5.

[0097] When performing an end face spline assembly qualification test on the first part to be detected 4 and the second part to be detected 5, it is necessary to first position one of the first part to be detected 4 and the second part to be detected 5 and the detection device, and then determine whether the end face spline between the first part to be detected 4 and the second part to be detected 5 is assembled in place by detecting the position of the other one of the first part to be detected 4 and the second part to be detected 5 relative to the detection device.

[0098] The following example takes the situation where the first to-be-detected part 4 and the detection device are positioned, and the relative position between the second to-be-detected part 5 and the detection device is detected. Figures 5 to 8 , the principle and implementation method of the end face spline assembly qualification test are exemplarily explained, and those skilled in the art can easily infer the principle and implementation method of the end face spline assembly qualification test by first positioning the second part to be tested 5 and the detection device, and detecting the relative position between the first part to be tested 4 and the detection device.

[0099] like Figures 5 to 8 As shown, the relative position between the first part to be detected 4 and the detection device is fixed. For example, when the actuator 21 is located at the detection position, along the axial direction of the first part to be detected 4, there is a first fitting distance D1 between the tooth top of the first end face spline 41 of the first part to be detected 4 and the first surface 2121 of the pressing portion 212, wherein the first surface 2121 is the surface of the pressing portion 212 away from the bottom wall 161 of the groove 16.

[0100] in, Figure 5 Schematic diagram showing the positional relationship between the first to-be-detected member 4, the second to-be-detected member 5 and the detection device in the meshing state, Figure 6 Yes Figure 5 A partial enlarged view of the matching positions between the various components. Figure 5 and Figure 6 As shown, in the engaged state, there is a first distance d1 between the mating surface 531 of the second part to be detected 5 and the tooth top of the first end face spline 41, wherein the engaged state refers to the state of the first part to be detected 4 and the second part to be detected 5 when the first end face spline 41 and the second end face spline 51 are engaged with each other, and at this time, the key teeth of the second end face spline 51 are located in the tooth groove of the first end face spline 41; the mating surface 531 of the second part to be detected 5 refers to the surface on the second part to be detected 5 that can apply pressure to the first surface 2121 of the pressing portion 212 when the actuator 21 is in the detection position.

[0101] in, Figure 7 It shows a schematic diagram of the positional relationship between the first to-be-detected member 4, the second to-be-detected member 5 and the detection device in the top tooth state. Figure 8 Yes Figure 7 A partial enlarged view of the matching positions between the various components. Figure 7 and Figure 8 As shown, in the top tooth state, there is a second distance d2 between the mating surface 531 of the second part to be detected 5 and the tooth top of the first end face spline 41, wherein the top tooth state refers to the state of the first part to be detected 4 and the second part to be detected 5 when the tooth top of the first end face spline 41 and the tooth top of the second end face spline 51 are in contact.

[0102] like Figure 6 As shown, the first mating distance D1 is greater than the first distance d1, so as to ensure that the mating surface 531 of the second detection member 5 can exert pressure on the first surface 2121 of the pressing portion 212 in the meshing state, and actuate at least a portion of the pressing portion 212 to retract into the first inner cavity 13 along the radial direction of the first shell 1, thereby ensuring that the first indicator 22 can be effectively triggered in the meshing state. It should be noted that Figure 6 The dotted line shows the position of the portion of the pressing portion 212 protruding from the bottom wall 161 of the groove 16 when not actuated by external force. In the engaged state, the actual position of the pressing portion 212 is completely retracted into the first inner cavity 13.

[0103] like Figure 8 As shown, the first mating distance D1 is less than or equal to the second distance d2, so as to ensure that the mating surface 531 of the second detection member 5 does not contact the first surface 2121 of the pressing portion 212 in the top tooth state, or even if it contacts the first surface 2121 of the pressing portion 212, it does not apply pressure to the first surface 2121 to retract it, thereby ensuring that the first indicator member 22 is not triggered in the top tooth state.

[0104] Optionally, the protrusion height of the pressing portion 212 from the bottom wall 161 of the groove 16 is less than or equal to the engagement depth of the first end face spline 41 and the second end face spline 51. That is, when the first detection member and the second detection member switch from the top tooth state to the engaged state, the movement distance of the second detection member 5 is greater than or equal to the retraction distance of the pressing portion 212 into the first inner cavity 13, thereby ensuring that the pressing portion 212 can be fully and effectively actuated. The engagement depth is the difference between the first distance d1 and the second distance d2.

[0105] Among them, the protruding height of the pressing portion 212 from the bottom wall 161 of the groove 16 is equal to the engagement depth of the first end face spline 41 and the second end face spline 51, which means that when the first part to be detected 4 and the second part to be detected 5 are in the top tooth state, the mating surface 531 of the second part to be detected 5 just contacts the first surface 2121 of the pressing portion 212, and there is no interaction force between the mating surface 531 and the first surface 2121; when the first part to be detected 4 and the second part to be detected 5 are in the meshing state, the pressing portion 212 just retracts completely into the first inner cavity 13, and at this time, the mating surface 531 of the second part to be detected 5 just contacts the bottom wall 161 of the groove 16.

[0106] Exemplarily, the protruding height of the pressing portion 212 from the bottom wall 161 of the groove 16 is 1.5 mm, with a tolerance of ≤±0.2 mm; the engagement depth of the first end face spline 41 and the second end face spline 51 is 1.5 mm, with a tolerance of ≤±0.2 mm.

[0107] In other examples of this application, Figure 9 and Figure 10 As shown, the opening 14 is provided on the end wall 111 of the first end 11 of the first shell 1, for example, in the middle position of the end wall, the opening area of the opening 14 is smaller than the end area of the first end 11, and the opening 14 is connected to the first inner cavity 13; at least a portion of the pressing portion 212 extends through the opening 14 to a side of the opening 14 away from the first inner cavity 13, that is, at least a portion of the pressing portion 212 protrudes from the end wall 111 of the first end 11.

[0108] like Figures 11 to 14 As shown, for the detection device provided with a pressing portion 212 on the end wall of the first shell 1, when performing end face spline detection, the protruding direction of the pressing portion 212 from the end wall is parallel to the spline matching end faces of the first part to be detected 4 and the second part to be detected 5, that is, the protruding direction of the pressing portion 212 is perpendicular to the axial direction of the first part to be detected 4 and perpendicular to the axial direction of the second part to be detected 5.

[0109] In some examples, such as Figure 10 and Figure 12As shown, the second surface 2122 of the pressing portion 212 is inclined in a direction away from the end wall 111 of the first end 11 and toward the first part to be detected 4, so as to convert a portion of the axial force applied by the mating surface 531 of the second part to be detected 5 along the second part to be detected 5 into an axial force along the first shell 1 that can retract the pressing portion 212 into the first inner cavity 13.

[0110] The principle of detecting the qualified assembly of the end face spline by the detection device provided with the pressing portion 212 on the end wall of the first housing 1 is basically the same as the principle of detecting the qualified assembly of the end face spline by the detection device provided with the pressing portion 212 on the outer peripheral wall 15 of the first housing 1 described above. Similarly, the following still takes the case where the first to-be-detected part 4 and the detection device are positioned first, and the relative position between the second to-be-detected part 5 and the detection device is detected as an example, and combines Figures 11 to 14 The principle and implementation method of the face spline assembly qualification test are exemplarily described. Those skilled in the art can easily infer the principle and implementation method of the face spline assembly qualification test by first positioning the second part to be tested 5 and the testing device and then detecting the relative position between the first part to be tested 4 and the testing device.

[0111] like Figures 11 to 14 As shown, the relative position between the first part to be detected 4 and the detection device is fixed. For example, when the actuator 21 is located at the detection position, along the axial direction of the first part to be detected 4, there is a second fitting distance D2 between the tooth top of the first end face spline 41 of the first part to be detected 4 and the second surface 2122 of the pressing portion 212, wherein the second surface 2122 is the surface of the pressing portion 212 that is away from the first part to be detected 4 in the axial direction of the first part to be detected 4.

[0112] in, Figure 11 Schematic diagram showing the positional relationship between the first to-be-detected member 4, the second to-be-detected member 5 and the detection device in the meshing state, Figure 12 Yes Figure 11 A partial enlarged view of the matching positions between the various components. Figure 11 and Figure 12 As shown, in the meshing state, there is a first distance d1 between the mating surface 531 of the second part to be detected 5 and the tooth top of the first end face spline 41, wherein the mating surface 531 of the second part to be detected 5 refers to the surface on the second part to be detected 5 that can apply pressure to the second surface 2122 of the pressing portion 212 when the actuator 21 is in the detection position.

[0113] in, Figure 13 It shows a schematic diagram of the positional relationship between the first to-be-detected member 4, the second to-be-detected member 5 and the detection device in the top tooth state. Figure 14 Yes Figure 13A partial enlarged view of the matching positions between the various components. Figure 13 and Figure 14 As shown, in the top tooth state, there is a second distance d2 between the matching surface 531 of the second component to be detected 5 and the tooth top of the first end face spline 41 .

[0114] like Figure 12 As shown, the second mating distance D2 is greater than the first distance d1, so as to ensure that the mating surface 531 of the second detection member 5 can exert pressure on the second surface 2122 of the pressing portion 212 in the meshing state, and actuate at least a portion of the pressing portion 212 to retract along the axial direction of the first housing 1 into the first inner cavity 13, thereby ensuring that the first indicator 22 can be effectively triggered in the meshing state. It should be noted that Figure 12 The dotted line shows the position of the portion of the pressing portion 212 protruding from the end wall 111 of the first end 11 when not actuated by external force. In the engaged state, the actual position of the pressing portion 212 is completely retracted into the first inner cavity 13.

[0115] like Figure 14 As shown, the second mating distance D2 is less than or equal to the second distance d2, so as to ensure that the mating surface 531 of the second detection member 5 does not contact the second surface 2122 of the pressing portion 212 in the top tooth state, or even if it contacts the second surface 2122 of the pressing portion 212, it does not apply pressure to the second surface 2122 to retract it, thereby ensuring that the first indicator member 22 is not triggered in the top tooth state.

[0116] The structural features of the second housing 3 will be described below.

[0117] In order to ensure that the actuator 21 is located in the inspection position when performing the end face spline assembly qualification test, the second shell 3 is used to limit the position of the first shell 1 in this application, thereby indirectly limiting the actuator 21 located at the first end 11 of the first shell 1.

[0118] In some examples, such as Figure 15 As shown, the first housing 1 has a first projection 17 along the axial direction, and the second housing 3 has a second projection 33 along the axial direction, with at least a portion of the second projection 33 located outside the first projection 17. In other words, the second housing 3 has a portion that radially extends beyond the first housing 1, thereby forming a stepped surface between the first housing 1 and the second housing 3. This stepped surface can be used to limit the second housing 3, thereby restricting the position of the first housing 1 and the actuator 21.

[0119] Optionally, the first projection 17 is located within the second projection 33, and the projection area of the first projection 17 is smaller than the projection area of the second projection 33. In this case, Figure 1As shown, along the axial direction of the first shell 1, the first shell 1 and the second shell 3 are connected, and the cross-sectional area of the first shell 1 is smaller than the cross-sectional area of the second shell 3; the step surface is formed by the surface of the second shell 3 facing the first shell 1.

[0120] For example, Figure 2 As shown, the first housing 1 is a cylinder; the second housing 3 comprises a first portion 34 and a second portion 35. The first portion 34 is a semi-cylinder, and the second portion 35 is a rectangular solid. The rectangular surface of the semi-cylinder is connected to one surface of the rectangular solid. The diameter of the semi-cylinder is larger than that of the cylinder, and the semi-cylinder and the cylinder are coaxial. Therefore, a stepped surface is formed between the semi-cylinder and the cylinder. During the end face spline assembly qualification test, this end face serves as a limit stop for the second housing 3, thereby limiting the position of the first housing 1 and indicating that the actuator 21 is in the test position.

[0121] Optionally, the second projection 33 is annular, the first projection 17 is located inside the second projection 33, and the first projection 17 and the second projection 33 are connected. In this case, the second housing 3 is an annular structure (not shown) that is sleeved and connected to the outer peripheral wall 15 of the second end 12 of the first housing 1, and the step surface is formed by an annular end surface of the annular structure.

[0122] When conducting an end face spline assembly qualification test, in order to ensure that the actuator 21 located at the test position can be actuated, the actuator 21 needs to be oriented in the test direction, wherein the mating surface 531 of the second part to be tested 5 is located in the test direction. When the actuator 21 is oriented in the test direction, its pressing portion 212 can be subjected to the force exerted by the mating surface 531 of the second part to be tested 5 in the engaged state, wherein the telescopic direction of the actuator 21 relative to the first inner cavity 13 is also parallel to the test direction.

[0123] When the mating parts of the end face splines of the first part to be detected 4 and the second part to be detected 5 are visible, the position of the actuator 21 on the first shell 1 is generally also visible. The inspector can directly observe the direction of the actuator 21 and set the actuator 21 in the detection direction by rotating the detection device.

[0124] If the mating point of the end face splines of the first to-be-detected member 4 and the second to-be-detected member 5 is not visible, the position of the actuator 21 on the first housing 1 is generally also not visible. In this case, it is difficult for the inspector to determine whether the orientation of the actuator 21 is the detection direction. In some examples, the second housing 3 can be used to indicate the protruding direction of the actuator 21.

[0125] Alternatively, as Figure 16As shown, at least part of the circumferential profile of the second housing 3 has a specific shape 31, which is used to indicate the detection direction. The circumferential profile refers to the outer profile of the second housing 3 projected along the axial direction of the first housing 1.

[0126] It should be noted that the “specific shape 31” here does not refer to a specific shape, but refers to all differentiated shapes that can play an indicative role. Figure 1 and Figure 16 As can be seen, the circumferential profile of the second housing 3 includes a rectangle and a semicircle connected to the first side of the rectangle. In this case, the actuator 21 is also located on the first side of the first housing 1. In this case, the semicircle can be considered as the "specific shape 31" because it is significantly different from the shape of other parts of the circumferential profile. Accordingly, the protruding direction of the semicircle can be used as the detection direction. Of course, in other examples, the specific shape 31 can also be other shapes, such as angles, grooves, etc., and the embodiments of the present application do not impose specific limitations on this.

[0127] Optionally, continue with Figure 16 The second housing 3 is provided with an indicator mark 32, which is used to indicate the detection direction. For example, the indicator mark 32 is an arrow pattern drawn on the end surface of the second housing 3 away from the first housing 1. The direction indicated by the arrow pattern is the same as the direction of the actuator 21. By aligning the arrow pattern with the detection direction, the actuator 21 can be ensured to be facing the detection direction. Of course, in other examples, the indicator mark 32 can also be other patterns or structural features, and this embodiment of the application does not impose specific limitations on this.

[0128] The structural features of the detection component 2 will be described below.

[0129] In some examples, the actuator 21 and the first indicator 22 are electrically connected. The actuator 21 is a first switch element, and the first indicator 22 is an electrical indicator element, such as an indicator light 221, a buzzer 222, etc. Figure 17 As shown, the detection component 2 also includes a detection circuit 23, which has a power supply 26. The first switch element and the electrical indication element are connected in series and are both connected to the detection circuit 23. When the first switch element is not actuated by an external force, the first switch element is disconnected, the detection circuit 23 is open, and no current flows through the electrical indication element; when the first switch element is actuated by an external force, the first switch element is closed, the detection circuit 23 is connected, the electrical indication element is energized, and a first indication signal is emitted.

[0130] In some examples, the first switch element is a mechanical switch element that can switch states when actuated by an external force, such as a contact switch, a micro switch, etc.

[0131] In some examples, such as Figure 17 As shown, the first indicator 22 includes at least one of an indicator light 221 and a buzzer 222, wherein the first indication signal emitted by the indicator light 221 is a light signal, and the first indication signal emitted by the buzzer 222 is an acoustic signal. When the first indicator 22 includes the indicator light 221 and the buzzer 222, the indicator light 221 and the buzzer 222 are arranged in series.

[0132] In some examples, such as Figure 18 and Figure 19 As shown, the detection circuit 23 may include a main circuit 231, a first branch circuit 232, and a second branch circuit 233. The main circuit 231 has a power supply 26. The first branch circuit 232 and the second branch circuit 233 are connected in parallel and in series with the main circuit 231. The first switch element is configured to switch the main circuit 231 to one of the first branch circuit 232 and the second branch circuit 233. The first indicator 22 is located in the second branch circuit 233. When the first switch element is not actuated by an external force, the first branch circuit 232 is turned on, the second branch circuit 233 is turned off, and the first indicator 22 is de-energized. When the first switch element is actuated by an external force, the first branch circuit 232 is turned off, the second branch circuit 233 is turned on, and the first indicator 22 is energized and emits a first indication signal.

[0133] In some examples, see Figure 18 and Figure 19 Detection assembly 2 further includes a second switch element 24, which is connected to main circuit 231 and configured to control whether detection circuit 23 is powered on or off. In other words, second switch element 24 functions as a switch for power supply 26. When second switch element 24 is closed, main circuit 231 is conductive, allowing current to flow through detection circuit 23. When second switch element 24 is open, main circuit 231 is disconnected, and no current flows through detection circuit 23.

[0134] In some examples, see Figure 18 and Figure 19 The detection assembly 2 also includes a second indicator 25. In one possible design, the second indicator 25 is connected to the second switching element 24, or connected to the main circuit 231. The second indicator 25 is configured to emit a second indication signal when the detection circuit 23 is energized. The second indication signal is used to indicate that the detection circuit 23 is energized. In another possible design, the second indicator 25 is connected to the first branch 232 and is configured to emit a third indication signal when the first branch 232 is conductive. The third indication signal is used to indicate that the first branch 232 is energized.

[0135] The second indicator 25 may include at least one of a buzzer and an indicator light, wherein the second indication signal emitted by the buzzer is a sound signal, and the first indication signal emitted by the indicator light is a light signal.

[0136] Optionally, when both the first indication signal and the second indication signal include sound signals, the frequency or amplitude of the first indication signal is different from the frequency or amplitude of the second indication signal; when both the first indication signal and the second indication signal include light signals, the color of the first indication signal is different from the color of the second indication signal.

[0137] In some examples, such as Figure 16 As shown, the first indicator 22 , the second indicator 25 , the second switch element 24 and the power supply 26 can all be installed in the second housing 3 .

[0138] In some examples, such as Figure 1 As shown, the second housing 3 has a second inner cavity (not shown in the figure), which is connected to the first inner cavity (not shown in the figure) to form a storage space; the detection circuit 23 is formed on the circuit board and is electrically connected to the actuator 21, the first indicator 22 and the second indicator 25 through wires, wherein the circuit board and the wires are accommodated in the storage space. It should be noted that Figure 1 Wires located inside the first shell 1 and the second shell 3 and a circuit board on which the detection circuit 23 is formed are shown in dotted lines.

[0139] This embodiment does not limit the application areas of the detection device; it can be used in any scenario requiring face spline assembly qualification testing, such as in the automotive and aerospace fields. In the automotive field, for example, the detection device can be used in the face spline assembly of a wheel hub bearing and a drive shaft, or in the face spline assembly of a motor shaft and a transmission input shaft. For ease of understanding, the following example illustrates the application of the detection device in the face spline assembly scenario of a wheel hub bearing and a drive shaft.

[0140] like Figure 5 and Figure 6 As shown, the first part to be tested 4 is a wheel hub bearing having a first end face spline 41; the second part to be tested 5 is a drive shaft, which includes a shaft shoulder 53, a shaft head 52, and a second end face spline 51 provided on the end face of the shaft head 52. When performing the end face spline assembly qualification test, the first housing 1 can be inserted into the test hole (not shown) on the side wall of the steering knuckle (not shown) so that the actuator 21 is in the test position. The axial direction of the test hole on the side wall of the steering knuckle is perpendicular to the axial direction of the shaft hole (not shown) of the steering knuckle.

[0141] For the detection device having the pressing portion 212 provided on the outer peripheral wall 15 of the first housing 1, see Figure 5 and Figure 6There is a third distance d3 between the insertion end of the detection hole and the shoulder 53 of the drive shaft, and a fourth distance d4 between the insertion end of the detection hole and the shaft head 52 of the drive shaft. The insertion end of the detection hole is located on the outer wall of the steering knuckle. Along the axial direction of the first housing 1, there is a fifth distance d5 between the side of the groove 16 away from the end wall 111 of the first end 11 of the first housing 1 and the end wall of the second end 12 of the first housing 1. There is a sixth distance d6 between the third surface 2123 of the pressing portion 212 and the end wall of the second end 12 of the first housing 1. The third surface 2123 is the surface of the pressing portion 212 away from the second housing 3.

[0142] In some examples, such as Figure 6 As shown, the axial length L of the first housing 1 is greater than the third distance d3 to ensure that the actuator 21 is located in the insertion direction of the drive shaft for mating with the mating surface 531 of the drive shaft. Simultaneously, the axial length L of the first housing 1 is less than or equal to the fourth distance d4 to prevent interference between the first end 11 of the first housing 1 and the drive shaft's insertion path. The drive shaft's insertion path refers to the area through which the drive shaft passes when inserted into the axial hole of the steering knuckle for end spline assembly with the wheel hub bearing.

[0143] In some examples, such as Figure 6 As shown, the fifth distance d5 is greater than zero and less than or equal to the third distance d3, thereby ensuring that the mating surface 531 on the drive shaft is directly opposite to the bottom wall 161 of the groove 16, thereby avoiding the situation where the mating surface 531 on the drive shaft abuts against the outer peripheral wall 15 of the first shell 1 and the pressing portion 212 cannot be actuated, thereby ensuring the reliability of the press-actuation.

[0144] In some examples, such as Figure 6 As shown, the sixth distance d6 is greater than the third distance d3 and is less than or equal to the axial length L of the first shell 1. Therefore, at least a portion of the pressing portion 212 is opposite to the mating surface 531 on the drive shaft. When the actuator 21 is located at the detection position, if the second end face spline 51 of the drive shaft can engage with the first end face spline 41 of the hub bearing, the mating surface 531 on the drive shaft will inevitably actuate the pressing portion 212, thereby ensuring the effectiveness of the actuation.

[0145] For the detection device having the pressing portion 212 disposed on the end wall 111 of the first end 11 of the first housing 1, see Figure 11 and Figure 12A third distance d3 is defined between the insertion end of the detection hole and the drive shaft shoulder 53, and a fourth distance d4 is defined between the insertion end of the detection hole and the drive shaft head 52. The insertion end of the detection hole is located on the outer sidewall of the steering knuckle. Along the axial direction of the first housing 1, a seventh distance d7 is defined between the fourth surface 2124 of the pressing portion 212 and the end wall of the second end 12 of the first housing 1. Fourth surface 2124 is the surface of the pressing portion 212 that is distal to the first housing 1.

[0146] In some examples, the axial length L of the first shell 1 is greater than zero and less than or equal to the third distance d3, thereby ensuring that the first end 11 of the first shell 1 does not extend into the insertion path of the drive shaft, thereby preventing the first end 11 of the first shell 1 from interfering with the shoulder 53 of the drive shaft, hindering the insertion of the drive shaft, and further hindering the end face spline assembly between the hub bearing and the drive shaft.

[0147] In some examples, the seventh distance d7 is greater than the third distance d3 and less than or equal to the fourth distance d4, thereby ensuring that at least a portion of the pressing portion 212 is opposite to the mating surface 531 on the drive shaft. When the actuator 21 is located at the detection position, if the second end face spline 51 of the drive shaft can engage with the first end face spline 41 of the hub bearing, the mating surface 531 on the drive shaft will inevitably actuate the pressing portion 212, thereby simplifying the operation of actuating the pressing portion 212 and ensuring the effectiveness of the actuation.

[0148] In summary, the detection device provided by the embodiment of the present application can be applied to the assembly scenario of the end face spline of the wheel hub bearing and the drive shaft of the vehicle, and can instantly detect the assembly status of the end face spline of the drive shaft and the wheel hub bearing, and promptly remind the assembler, so that the assembler can identify whether the end face spline of the drive shaft and the wheel hub bearing is in place during the pre-tightening stage, and make corrections as soon as possible if the assembly is not in place, thereby avoiding rework in the later stage, improving assembly efficiency, and reducing assembly costs. At the same time, the detection device provided by the embodiment of the present application can also be applied to the assembly qualification detection scenario of the end face spline of the wheel hub bearing and the drive shaft of the vehicle, that is, when the wheel hub bearing and the drive shaft are assembled, the assembly qualification check can also be carried out by inserting the detection device into the detection hole on the steering knuckle, providing an accurate and effective detection means for offline scenarios such as rework.

[0149] An embodiment of the present application also provides a detection method, which is applied to the detection device in the above embodiment.

[0150] Take the detection method provided in the embodiment of the present application for detecting the assembly qualification between the first end face spline 41 of the wheel hub bearing and the second end face spline 51 of the drive shaft in the vehicle as an example, see Figure 20 , the method comprising:

[0151] S100 , inserting the first housing 1 into the detection hole on the side wall of the steering knuckle until the second housing 3 abuts against the side wall of the steering knuckle, so that the actuating member 21 is located at the detection position.

[0152] After fixing the positions of the wheel hub bearing and the steering knuckle, the detection device is installed in the detection hole of the steering knuckle side wall. The second shell 3 is abutted against the side wall of the steering knuckle to limit the insertion depth of the first shell 1 in the detection hole so that the actuator 21 is located in the detection position.

[0153] In some examples, the method further includes rotating the detection device in the detection hole according to a specific shape 31 on the circumferential profile of the second shell 3, or according to an indicator mark 32 provided on the end face of the second shell 3, so that the actuator 21 faces the insertion direction of the drive shaft.

[0154] In some examples, the method further includes: turning on the second switch element 24 on the detection device, and determining that the detection circuit 23 is powered on when the second indicator 25 sends a second indication signal or a third indication signal.

[0155] S200, in response to the drive shaft being inserted into the shaft hole of the steering knuckle and abutting against the wheel hub bearing, and the first indicator 22 sending out a first indication signal, it is determined that the first end face spline 41 of the wheel hub bearing and the second end face spline 51 of the drive shaft are assembled properly.

[0156] After the detection device is installed, the drive shaft is inserted into the shaft hole of the steering knuckle until the second end face spline 51 of the drive shaft abuts against the first end face spline 41 of the wheel hub bearing. The wheel hub bearing and the drive shaft are pre-tightened, for example, by tightening the mounting fasteners (not shown in the figure) passing through the wheel hub bearing and the drive shaft with a small torque. The pre-tightening torque is, for example, 4 N·m. The mounting fasteners are, for example, bolts.

[0157] When the first end face spline 41 and the second end face spline 51 are engaged, the actuator 21 is pressed into the first inner cavity 13 by the mating surface 531 on the drive shaft (for example, the stepped side of the drive shaft shoulder 53), triggering the first indicator 22 to emit a first indication signal, indicating that the assembly is qualified. After observing this first indication signal, the assembler can determine that the first end face spline 41 of the hub bearing and the second end face spline 51 of the drive shaft are properly assembled.

[0158] In some examples, after the actuator 21 is pressed into the first inner cavity 13 by the mating surface 531, the branch where the first indicator 22 is located is connected to the detection circuit 23, so that the first indicator 22 sends a first indication signal, such as the indicator light 221 lights up or the buzzer 222 sounds.

[0159] In some examples, after determining that the first end face spline 41 of the hub bearing and the second end face spline 51 of the drive shaft are assembled properly, the mounting fasteners are tightened according to the assembly torque of the mounting fasteners to complete the assembly between the hub bearing and the drive shaft.

[0160] Therefore, when this method is applied to the assembly scenario of the end face splines of the vehicle's wheel hub bearing and drive shaft, it can detect the assembly status of the end face splines of the drive shaft and the wheel hub bearing and promptly prompt the assembler, thereby ensuring that the wheel hub bearing and drive shaft in the vehicles off the production line are well engaged and assembled in place, thereby improving the assembly efficiency and pass rate.

[0161] In some examples, the detection method also includes: in response to the drive shaft being inserted into the shaft hole of the steering knuckle and abutting against the wheel hub bearing, and the first indicator 22 not issuing a first indication signal, determining that the first end face spline 41 of the wheel hub bearing and the second end face spline 51 of the drive shaft are unqualified in assembly.

[0162] If the wheel hub bearing and drive shaft are in the top gear state, and the first end face splines 41 and the second end face splines 51 are not engaged, the actuator 21 will not be actuated by the mating surface 531 on the drive shaft. In other words, the actuator 21 will not retract into the first inner cavity 13. At this time, the first indicator 22 will not emit the first indication signal. Upon observing the absence of the first indication signal, the assembler can determine that the assembly of the first end face splines 41 of the wheel hub bearing and the second end face splines 51 of the drive shaft has failed.

[0163] Therefore, if the end face spline is not assembled in place, the assembler can correct it as soon as possible according to the prompts of the detection device to avoid rework at a later time, thereby improving assembly efficiency and reducing rework costs.

[0164] In some examples, after determining that the first end face spline 41 of the hub bearing and the second end face spline 51 of the drive shaft are not assembled properly, the method further includes: in response to the hub bearing being rotated so that the first indicator 22 sends a first indication signal, determining that the first end face spline 41 of the hub bearing and the second end face spline 51 of the drive shaft are assembled properly.

[0165] After determining that the first end face spline 41 of the wheel hub bearing and the second end face spline 51 of the drive shaft are not assembled properly, it is necessary to adjust the relative position between the first end face spline 41 and the second end face spline 51 so that the wheel hub bearing and the drive shaft change from the current top tooth state to the meshing state. In practice, for example, the mounting fasteners are first loosened, and then the brake disc of the vehicle is rotated so that the brake disc drives the first end face spline 41 of the wheel hub bearing to rotate, and then the drive shaft is pushed forward so that the key teeth of the second end face spline 51 slide into the tooth groove of the first end face spline 41, and the wheel hub bearing and the drive shaft are pre-tightened again. If the first end face spline 41 and the second end face spline 51 are indeed meshed, the actuator 21 will be pressed into the first inner cavity 13 by the mating surface 531 on the drive shaft (for example, the stepped side of the shoulder 53 of the drive shaft), triggering the first indicator 22 to send a first indication signal to indicate that the assembly is qualified. After observing the first indication signal, the assembler can determine that the first end face spline 41 of the hub bearing and the second end face spline 51 of the drive shaft are assembled properly.

[0166] In the description of this application, unless otherwise specified, " / " means "or", for example, A / B can mean A or B. "And / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, "at least one" means one or more, and "a plurality" means two or more. Words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not limit them to be necessarily different.

[0167] In this application, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0168] All the above optional technical solutions can be arbitrarily combined to form optional embodiments of the present disclosure, and will not be described in detail here.

[0169] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A detection device for detecting the eligibility of end spline assembly, characterized in that: The detection device comprises a first housing (1), a detection assembly (2) and a second housing (3); The first housing (1) has a first end (11) and a second end (12) that are opposite to each other in the axial direction; The detection assembly (2) comprises an actuating member (21) and a first indicator member (22), wherein the actuating member (21) is located at the first end (11) of the first housing (1) and is configured to be located at a detection position and to be actuated when detecting the assembly qualification of the end face spline; the first indicator member (22) is configured to emit a first indication signal when the actuating member (21) is actuated, the first indication signal being used to indicate that the assembly is qualified; The second housing (3) is connected to the second end (12) of the first housing (1) and is configured to limit the position of the first housing (1) so that the actuating member (21) is located at the detection position.

2. The detection device according to claim 1, characterized in that The first shell (1) has a first inner cavity (13); an opening (14) is provided on the shell wall of the first shell (1); the opening (14) is communicated with the first inner cavity (13); The actuating member (21) comprises an elastic portion (211) and a pressing portion (212), wherein two ends of the elastic portion (211) are respectively connected to the first shell (1) and the pressing portion (212), and the actuating member (21) is configured such that at least a portion of the pressing portion (212) is located on a side of the opening (14) away from the first inner cavity (13); and the pressing portion (212) can be retracted into the first inner cavity (13) through the opening (14) under the actuation of an external force.

3. The detection device according to claim 2, characterized in that The shell wall is an outer peripheral wall (15) of the first shell (1), and a groove (16) is provided on the outer peripheral wall (15), the groove (16) penetrates the first shell (1) in a tangential direction, and one side of the groove (16) extends along the axial direction of the first shell (1) to the end wall (111) of the first end (11); The opening (14) is located on the bottom wall (161) of the groove (16), and at least a portion of the pressing portion (212) protrudes from the bottom wall (161) of the groove (16), with the protruding height being less than or equal to the depth of the groove (16).

4. The detection device according to claim 3, characterized in that When the actuating member (21) is located at the detection position, a first fitting distance (D1) is provided between the first surface (2121) of the pressing portion (212) and the tooth top of the first end face spline (41) of the first member to be detected (4), and the first fitting distance (D1) is greater than the first distance (d1) and less than or equal to the second distance (d2); Wherein, the first surface (2121) is the surface of the pressing portion (212) away from the bottom wall (161) of the groove (16); The first distance (d1) is the distance between the mating surface (531) of the second part to be detected (5) and the tooth top of the first end face spline (41) in the meshing state, the mating surface (531) being a surface on the second part to be detected (5) for applying pressure to the first surface (2121), wherein in the meshing state, the key teeth of the second end face spline (51) of the second part to be detected (5) are located in the tooth grooves of the first end face spline (41); The second distance (d2) is the distance between the mating surface (531) of the second part to be detected (5) and the tooth top of the first end face spline (41) in the top tooth state, wherein in the top tooth state, the tooth top of the second end face spline (51) contacts the tooth top of the first end face spline (41).

5. The detection device according to claim 4, characterized in that The protruding height of the pressing portion (212) from the bottom wall (161) of the groove (16) is less than or equal to the engagement depth of the first end face spline (41) and the second end face spline (51).

6. The detection device according to claim 2, characterized in that The shell wall is the end wall (111) of the first end (11), the opening (14) is located on the end wall (111), and at least a portion of the pressing portion (212) protrudes from the end wall (111).

7. The detection device according to claim 6, characterized in that When the actuating member (21) is located at the detection position, a second fitting distance (D2) is provided between the second surface (2122) of the pressing portion (212) and the tooth top of the first end face spline (41) of the first member to be detected (4), and the second fitting distance (D2) is greater than the first distance (d1) and less than or equal to the second distance (d2); Wherein, the second surface (2122) is the surface of the pressing portion (212) away from the first part to be detected (4); The first distance (d1) is the distance between the mating surface (531) of the second part to be detected (5) and the tooth top of the first end face spline (41) in the meshing state, the mating surface (531) being a surface on the second part to be detected (5) for applying pressure to the second surface (2122), wherein in the meshing state, the key teeth of the second end face spline (51) of the second part to be detected (5) are located in the tooth grooves of the first end face spline (41); The second distance (d2) is the distance between the mating surface (531) of the second part to be detected (5) and the tooth top of the first end face spline (41) in the top tooth state, wherein in the top tooth state, the tooth top of the second end face spline (51) contacts the tooth top of the first end face spline (41).

8. The detection device according to claim 1, characterized in that The first shell (1) has a first projection (17) along the axial direction, and the second shell (3) has a second projection (33) along the axial direction, and at least a part of the second projection (33) is located outside the first projection (17).

9. The detection device according to claim 1, characterized in that At least a portion of the circumferential profile of the second housing (3) has a specific shape (31), the specific shape (31) being used to indicate a detection direction, wherein the actuating member (21) is configured to face the detection direction to be actuated when detecting the eligibility of the end face spline assembly; and / or, An indication mark (32) is provided on the second housing (3), and the indication mark (32) is used to indicate the detection direction.

10. The detection device according to claim 1, characterized in that: The first shell (1) is a cylinder; The second shell (3) comprises a first part (34) and a second part (35), the first part (34) being a semi-cylinder, the second part (35) being a rectangular body, and the rectangular surface of the semi-cylinder being connected to the surface of the rectangular body; The diameter of the semi-cylinder is larger than the diameter of the cylinder, and the semi-cylinder and the cylinder are coaxial.

11. The detection device according to claim 1, characterized in that: The detection component (2) further includes a detection circuit (23); The first indicator (22) is an electrical indicator element for emitting an acoustic signal or a light signal, and the electrical indicator element is connected to the detection circuit (23); The actuating member (21) is a first switching element, which is connected to the detection circuit (23) and is configured to operate under the actuation of an external force to turn on the electrical indicating element.

12. The detection device according to any one of claims 1 to 11, characterized in that: The detection device is configured to detect the fit between a first end face spline (41) of a wheel hub bearing and a second end face spline (51) of a drive shaft in a vehicle.

13. The detection device according to any one of claims 3 to 5, characterized in that: The first part to be detected (4) is a wheel hub bearing of a vehicle, the second part to be detected (5) is a drive shaft of the vehicle, and the first housing (1) is configured to be inserted into a detection hole on a side wall of a steering knuckle so that the actuating member (21) is located at the detection position; The detection device is configured to meet at least one of the following conditions: The axial length (L) of the first housing (1) is greater than a third distance (d3) and less than or equal to a fourth distance (d4), the third distance (d3) being the distance between the insertion end of the detection hole and the shaft shoulder (53) of the drive shaft, and the fourth distance (d4) being the distance between the insertion end of the detection hole and the shaft head (52) of the drive shaft, wherein the insertion end of the detection hole is located on the outer side wall of the steering knuckle; Along the axial direction of the first shell (1), a fifth distance (d5) is present between a side of the groove (16) away from the end wall (111) of the first end (11) of the first shell (1) and the end wall of the second end (12) of the first shell (1), and the fifth distance (d5) is greater than zero and less than or equal to the third distance (d3); Along the axial direction of the first shell, there is a sixth distance (d6) between the third surface (2123) of the pressing portion (212) and the end wall of the second end (12) of the first shell (1), and the sixth distance (d6) is greater than the third distance (d3) and less than or equal to the axial length (L) of the first shell (1), wherein the third surface (2123) is the surface of the pressing portion (212) away from the second shell (3).

14. The detection device according to claim 6 or 7, characterized in that: The first part to be detected (4) is a wheel hub bearing of a vehicle, the second part to be detected (5) is a drive shaft of the vehicle, and the first housing (1) is configured to be inserted into a detection hole on a side wall of a steering knuckle so that the actuating member (21) is located at the detection position; The detection device is configured to meet at least one of the following conditions: The axial length (L) of the first housing (1) is greater than zero and less than or equal to a third distance (d3), the third distance (d3) being the distance between the insertion end of the detection hole and the shoulder (53) of the drive shaft, wherein the insertion end of the detection hole is located on the outer side wall of the steering knuckle; Along the axial direction of the first shell, there is a seventh distance (d7) between the fourth surface (2124) of the pressing portion (212) and the end wall of the second end (12) of the first shell (1), and the seventh distance (d7) is greater than the third distance (d3) and less than or equal to the fourth distance (d4), the fourth distance (d4) is the distance between the insertion end of the detection hole and the shaft head (52) of the drive shaft, and the fourth surface (2124) is the surface of the pressing portion (212) away from the first shell (1).

15. A detection method, applied to the detection device according to any one of claims 1 to 14, characterized in that: The method is used to detect the assembly eligibility between a first end face spline (41) of a wheel hub bearing and a second end face spline (51) of a drive shaft in a vehicle, and the method comprises: Inserting the first housing (1) into the detection hole on the side wall of the steering knuckle until the second housing (3) abuts against the side wall of the steering knuckle, so that the actuating member (21) is located at the detection position; In response to the drive shaft being inserted into the shaft hole of the steering knuckle and abutting against the wheel hub bearing, and the first indicator (22) sending the first indication signal, it is determined that the first end face spline (41) of the wheel hub bearing and the second end face spline (51) of the drive shaft are assembled properly.

16. The method according to claim 15, characterized in that The method further comprises: In response to the drive shaft being inserted into the shaft hole of the steering knuckle and abutting against the wheel hub bearing, and the first indicator (22) not sending the first indication signal, it is determined that the first end face spline (41) of the wheel hub bearing and the second end face spline (51) of the drive shaft are unqualified in assembly.

17. The method according to claim 15, characterized in that After determining that the first end face spline (41) of the hub bearing and the second end face spline (51) of the drive shaft are unqualified in assembly, the method further comprises: In response to the hub bearing being rotated until the first indicator (22) emits the first indication signal, it is determined that the first end face spline (41) of the hub bearing and the second end face spline (51) of the drive shaft are assembled properly.

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