assembly fixture

Abstract

The application discloses an assembly clamp, and relates to the technical field of clutch assembly, which is used for the assembly of an integrated clutch shaft assembly in a hybrid special gearbox. The assembly clamp comprises a positioning seat, a positioning and retaining structure and a grabbing structure. The positioning seat is provided with an upward positioning end face, the direction of the positioning end face is matched with the axial direction of the integrated clutch shaft assembly, the positioning end face is formed with a first positioning part and a second positioning part, the first positioning part and the second positioning part are respectively used for positioning the electromagnetic coil and the coil pressing plate of the integrated clutch shaft assembly, so that the coil pressing plate is in a pre-assembly state of abutting against the electromagnetic coil downward and matching with the circumferential angle of the electromagnetic coil; the positioning and retaining structure is used for being arranged on the integrated clutch shaft assembly and abutting against the coil pressing plate downward, so that the relative position of the coil pressing plate and the electromagnetic coil is fixed, and the grabbing structure is used for grabbing the integrated clutch shaft assembly.

Description

Technical Field

[0001] This invention relates to the field of clutch assembly technology, and in particular to an assembly fixture. Background Technology

[0002] Currently, the market has increasingly higher requirements for vehicle driving, and vehicles offer more and more functions, such as keyless start and automatic clutch. This makes the requirements for monitoring the operating status of the transmission increasingly higher, requiring the installation of various electromagnetic coils on the transmission to realize some automatic functions of the transmission, such as the clutch function.

[0003] However, in the assembly scenario of hybrid dedicated transmissions, since the electromagnetic coil on the integrated clutch shaft assembly cannot be fixed on the clutch shaft, it is difficult for assembly personnel to check whether the electromagnetic coil is properly assembled during assembly, making it difficult to control the assembly quality of the electromagnetic coil. Summary of the Invention

[0004] The main objective of this invention is to propose an assembly fixture that aims to improve the problem of difficulty in controlling the assembly quality of electromagnetic coils on current integrated clutch shaft assemblies.

[0005] The assembly fixture provided by this invention is used for assembling an integrated clutch shaft assembly in a hybrid-specific transmission. The assembly fixture includes: The positioning seat has an upwardly facing positioning end face, the orientation of which is matched with the axial direction of the integrated clutch shaft assembly. The positioning end face is formed with a first positioning part and a second positioning part, the first positioning part and the second positioning part being respectively used to position the electromagnetic coil and the coil pressure plate of the integrated clutch shaft assembly, so that the coil pressure plate is in a pre-assembly state where it abuts the electromagnetic coil downward and matches the circumferential angle of the electromagnetic coil. A positioning and retaining structure is provided on the integrated clutch shaft assembly and abuts downward against the coil pressure plate, thereby fixing the relative position of the coil pressure plate and the electromagnetic coil; and, A gripping structure for gripping the integrated clutch shaft assembly.

[0006] In one embodiment, the first positioning part includes a coil positioning groove and a connector positioning groove that are interconnected. The coil positioning groove is used to position the coil body of the electromagnetic coil, and the connector positioning groove is used to position the wire harness connector of the electromagnetic coil.

[0007] In one embodiment, the second positioning part includes a contoured groove, the cross-section of which is used to match the cross-sectional shape of the coil pressure plate in a vertical projection. The coil positioning groove is formed on the bottom wall of the contoured groove, and the connector positioning groove is arranged horizontally to connect the contoured groove and the coil positioning groove.

[0008] In one embodiment, the bottom wall of the coil positioning groove is formed with a bearing positioning groove, which is used for a bearing on the integrated clutch assembly near the electromagnetic coil to extend into.

[0009] In one embodiment, the positioning and holding structure includes a plurality of first positioning posts that extend in a vertical direction and are used to abut against the coil pressure plate. The lower end of the first positioning post has a limiting protrusion, which is used to extend into the corresponding threaded hole on the coil pressure plate.

[0010] In one embodiment, the positioning and retaining structure further includes a force-bearing pressure plate, and a plurality of first positioning posts are formed on the lower end face of the force-bearing pressure plate; The pressure plate is formed with a clearance hole that runs through the vertical direction, and the clearance hole is used to allow the gear on the first shaft at the upper end of the integrated clutch shaft assembly to pass through. The gripping structure abuts downward against the pressure plate and is used to grip the gear on the first shaft.

[0011] In one embodiment, the gripping structure includes a gripping handle, the lower end of which abuts against the pressure plate and has a hook protruding in a horizontal direction. The hook is used to extend between the pressure plate and the gear on the first shaft and abuts against the gear on the first shaft upward.

[0012] In one embodiment, the grasping structure includes: Two gripping handles are spaced apart horizontally, positioned radially on either side of the first gear on the upper end of the integrated clutch shaft assembly. The lower end of each gripping handle has a hook protruding horizontally, which extends into the bottom of the first gear and abuts against it upwards. A connector is provided at the upper end of the two gripping handles.

[0013] In one embodiment, the connector has two horizontally oriented connecting portions, which are respectively connected to two gripping handles and are movable toward or away from each other.

[0014] In one embodiment, in the horizontal direction, the connector has a connecting body located in the middle, the connecting body being provided with a second positioning post extending downward, the second positioning post being used to extend into the shaft hole at the upper end of the integrated clutch shaft assembly.

[0015] The technical solution provided by this invention, before installing the integrated clutch shaft assembly into the gearbox housing, firstly uses a positioning seat to pre-assemble and position the electromagnetic coil and coil pressure plate of the integrated clutch shaft assembly, so that the coil pressure plate is in a pre-assembled state where it is pressing downward against the electromagnetic coil under the action of gravity and matches the circumferential angle of the electromagnetic coil. Then, the positioning and holding structure provides continuous downward pressure to the coil pressure plate, so that the relative position of the coil pressure plate and the electromagnetic coil is fixed. Then, the integrated clutch shaft assembly is gripped by a gripping structure and transferred into the gearbox housing for installation. Since the electromagnetic coil and the coil pressure plate are always kept in the pre-assembled state, after aligning the coil pressure plate with the mounting position on the gearbox housing using the threaded hole of the coil pressure plate, it can be ensured that the circumferential installation of the electromagnetic coil is in place. Finally, the coil pressure plate is fixed with bolts, thus completing the accurate assembly of the integrated clutch shaft assembly on the hybrid special gearbox.

[0016] Since the electromagnetic coil cannot be fixed on the clutch shaft assembly, the technical solution provided by this invention pre-assembles the coil pressure plate and the electromagnetic coil with the aid of an assembly fixture before installing the integrated clutch shaft assembly into the gearbox housing. This improves the problem that makes it difficult for operators to check the assembly status of the electromagnetic coil during assembly and can improve the assembly quality of the electromagnetic coil. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 A three-dimensional structural schematic diagram of an embodiment of an integrated clutch shaft assembly in a hybrid-specific transmission; Figure 2 This is a schematic diagram of an embodiment of the assembly fixture proposed in this invention; Figure 3 This is a schematic diagram of the state of the first use step of the assembly fixture proposed in this invention; Figure 4 This is a schematic diagram of the state of the second use step of the assembly fixture proposed in this invention; Figure 5This is a schematic diagram of the state of the third use step of the assembly fixture proposed in this invention.

[0019] Explanation of icon numbers: 100. Assembly fixtures; 1. Positioning seat; 1a. Positioning end face; 11. First positioning part; 111. Contouring groove; 12. Second positioning part; 121. Coil positioning groove; 122. Connector positioning groove; 13. Bearing positioning groove; 2. Positioning and retaining structure; 21. Load-bearing pressure plate; 21a. Clearance hole; 22. First positioning post; 3. Gripping structure; 31. Gripping handle; 311. Hook; 32. Connector; 321. Connecting body; 3211. Second positioning post; 322. Connecting part; 323. Hinge plate; 200. Integrated clutch shaft assembly; 210. Electromagnetic coil; 211. Coil body; 212. Wire harness connector; 220. Coil pressure plate; 221. Threaded hole; 230. Gear on the first shaft; 240. Gear on the second shaft; 250. Bearing.

[0020] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] It should be noted that if the embodiments of the present invention involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0023] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0024] Currently, the market has increasingly higher requirements for vehicle driving, and vehicles offer more and more functions, such as keyless start and automatic clutch. This makes the requirements for monitoring the operating status of the transmission increasingly higher, requiring the installation of various electromagnetic coils on the transmission to realize some automatic functions of the transmission, such as the clutch function.

[0025] However, in the assembly scenario of hybrid dedicated transmissions, since the electromagnetic coil on the integrated clutch shaft assembly cannot be fixed on the clutch shaft (the electromagnetic coil has a rotational degree of freedom relative to the clutch shaft), the assemblers are affected by the transmission housing and find it difficult to check whether the electromagnetic coil is properly assembled. After the assemblers fix the coil pressure plate with bolts, the electromagnetic coil may interfere with the push ring, causing the push ring to jam when the clutch is engaged. This also makes it difficult to control the assembly quality of the electromagnetic coil.

[0026] In view of this, the present invention proposes an assembly fixture that can at least improve the problem of difficulty in controlling the assembly quality of electromagnetic coils on current integrated clutch shaft assemblies.

[0027] To facilitate understanding of the integrated clutch shaft assembly involved in the assembly fixture provided by this invention, the following description is provided in conjunction with the accompanying drawings, wherein... Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of an integrated clutch shaft assembly in a hybrid-specific transmission.

[0028] Please see Figure 1The integrated clutch shaft assembly 200 is a DHT150 integrated assembly, which typically includes a bearing 250, an electromagnetic coil 210, a coil pressure plate 220, a second shaft gear 240, a first shaft gear 230, and the bearing 250 arranged sequentially along the axial direction. The electromagnetic coil 210 is typically fixed axially and radially to the clutch shaft and has rotational freedom about the axial direction relative to the clutch shaft. The electromagnetic coil 210 typically includes a coil body 211 and a wiring harness connector 212. The wiring harness connector 212 is disposed on the peripheral sidewall of the coil body 211. The presence of 12 means that when assembling the electromagnetic coil 210, there are certain installation requirements for the circumferential angle of the electromagnetic coil 210 (the orientation of the wiring harness connector 212). The coil pressure plate 220 is usually arranged around the clutch shaft and has multiple threaded holes 221 distributed circumferentially. The coil pressure plate 220 is installed to the corresponding mounting position on the gearbox housing through the multiple threaded holes 221 and presses and fixes the electromagnetic coil 210 along its axial direction. Under correct installation, the orientation of the wiring harness connector 212 of the electromagnetic coil 210 is generally matched with the orientation of the corresponding fixing area of ​​the coil pressure plate 220.

[0029] To facilitate understanding of the integrated clutch shaft assembly 200 involved in the assembly fixture 100 provided by the present invention, the following description is provided in conjunction with the accompanying drawings, wherein... Figure 2 This is a schematic diagram of an embodiment of the assembly fixture 100 proposed in this invention; Figure 3 This is a schematic diagram of the state of the first use step of the assembly fixture 100 proposed in this invention; Figure 4 This is a schematic diagram of the state of the second use step of the assembly fixture 100 proposed in this invention; Figure 5 This is a schematic diagram of the state of the third use step of the assembly fixture 100 proposed in this invention.

[0030] Please see Figure 2 and Figure 5In one embodiment, the assembly fixture 100 provided by the present invention is used for assembling an integrated clutch shaft assembly 200 in a hybrid-specific transmission. The assembly fixture 100 includes a positioning seat 1, a positioning and holding structure 2, and a gripping structure 3. The positioning seat 1 has an upwardly facing positioning end face 1a, the orientation of which is matched with the axial direction of the integrated clutch shaft assembly 200. The positioning end face 1a has a first positioning part 11 and a second positioning part 12, which are respectively used to position the electromagnetic coil 210 and the coil pressure plate 220 of the integrated clutch shaft assembly 200, so that the coil pressure plate 220 is in a pre-assembly state where it abuts the electromagnetic coil 210 downward and matches the circumferential angle of the electromagnetic coil 210. The positioning and holding structure 2 is used to be disposed on the integrated clutch shaft assembly 200 and abuts the coil pressure plate 220 downward, so that the relative position of the coil pressure plate 220 and the electromagnetic coil 210 is fixed. The gripping structure 3 is used to grip the integrated clutch shaft assembly 200.

[0031] "The orientation of the positioning end face 1a is used to match the axial direction of the integrated clutch shaft assembly 200" should be understood as the normal direction of the plane where the positioning end face 1a is located being basically consistent with the axial direction when the assembly is placed, so as to ensure that the assembly can naturally fall into place in the direction of gravity; "pre-assembly state" refers to the temporary positioning state established before the coil pressure plate 220 and the electromagnetic coil 210 are finally installed into the gearbox housing, which is consistent with the relative position after correct assembly. In this state, the coil pressure plate 220 has already pressed down against the electromagnetic coil 210 under the action of gravity, and the orientation of the wire harness connector 212 is aligned with the corresponding fixed area on the coil pressure plate 220. "Matching the circumferential angle" specifically means that the relative angular positional relationship between the orientation of the wire harness connector 212 and the position of the corresponding threaded hole 221 on the coil pressure plate 220 meets the correct assembly requirements.

[0032] The structure of the “first positioning part 11 and the second positioning part 12” can generally be divided into positioning recesses and positioning protrusions. Regardless of the type of positioning part, it should be able to match the corresponding features on the electromagnetic coil 210 and the coil pressure plate 220, so as to at least restrict the rotational freedom of the electromagnetic coil 210 and the coil pressure plate 220 around the upper axis.

[0033] The "positioning and retaining structure 2" needs to be able to abut downwards against the coil pressure plate 220, and also fix the relative position of the coil pressure plate 220 and the electromagnetic coil 210. That is, the positioning and retaining structure 2 can also restrict the rotational freedom of the coil pressure plate 220. Specifically, the positioning and retaining structure 2 can be axially fixed by means of the specific structure of the integrated clutch shaft assembly 200.

[0034] The function of the "grabbing structure 3" is to grab the integrated clutch shaft assembly 200, thereby transferring the integrated clutch shaft assembly 200 along with the positioning and holding structure 2. It can also complete the grabbing using the specific structure of the integrated clutch shaft assembly 200.

[0035] The technical solution provided by this invention, before installing the integrated clutch shaft assembly 200 into the gearbox housing, first uses the positioning seat 1 to pre-assemble and position the electromagnetic coil 210 and the coil pressure plate 220 of the integrated clutch shaft assembly 200, such as... Figure 3 As shown, the coil pressure plate 220 is in a pre-assembled state where it is pressed downward against the electromagnetic coil 210 under the action of gravity, and its circumferential angle matches that of the electromagnetic coil 210. Then, the positioning and holding structure 2 provides continuous downward pressure to the coil pressure plate 220, fixing the relative position of the coil pressure plate 220 and the electromagnetic coil 210. Figure 4 As shown, the integrated clutch shaft assembly 200 is then gripped using gripping structure 3, as follows. Figure 5 As shown, the electromagnetic coil 210 is transferred to the gearbox housing for installation. Since the electromagnetic coil 210 and the coil pressure plate 220 are always in a pre-assembled state, after aligning the coil pressure plate 220 with the mounting position on the gearbox housing using the threaded hole 221 of the coil pressure plate 220, it can be ensured that the electromagnetic coil 210 is circumferentially installed in place. Finally, the coil pressure plate 220 is fixed with bolts, and the accurate assembly of the integrated clutch shaft assembly 200 on the hybrid special gearbox can be completed.

[0036] Since the electromagnetic coil 210 cannot be fixed on the clutch shaft assembly, the technical solution provided by the present invention pre-assembles the coil pressure plate 220 and the electromagnetic coil 210 with the help of the assembly fixture 100 before installing the integrated clutch shaft assembly 200 into the gearbox housing. This improves the problem that it is difficult for operators to check the assembly status of the electromagnetic coil 210 during assembly and can improve the assembly quality of the electromagnetic coil 210.

[0037] Please see Figure 2 In one embodiment, the first positioning part 11 includes a coil positioning groove 121 and a connector positioning groove 122 that are interconnected. The coil positioning groove 121 is used to position the coil body 211 of the electromagnetic coil 210, and the connector positioning groove 122 is used to position the wire harness connector 212 of the electromagnetic coil 210.

[0038] The "coil positioning groove 121" is a groove formed by the concave and convex positioning end face 1a to accommodate the coil body 211 of the electromagnetic coil 210, and its shape corresponds to the outer contour of the coil body 211. The "connector positioning groove 122" is a groove specially designed to accommodate the wire harness connector 212 of the electromagnetic coil 210. Since the wire harness connector 212 is a protruding structure on the peripheral side wall of the coil body 211, the connector positioning groove 122 is usually formed by extending outward from the side wall of the coil positioning groove 121. "Interconnected" means that the two grooves are connected in the groove cavity. When the electromagnetic coil 210 is placed into the first positioning part 11 as a whole, the coil body 211 and the wire harness connector 212 can fall into their respective corresponding grooves simultaneously without separate installation.

[0039] It should be noted that the inner contour of the coil positioning groove 121 and the outer contour of the coil body 211 of the electromagnetic coil 210 should maintain a clearance fit to ensure that the electromagnetic coil 210 can be smoothly installed without significant radial movement within the groove; the width of the connector positioning groove 122 should be adapted to the circumferential dimension of the wire harness connector 212 along the coil body 211, so that after the wire harness connector 212 falls into the connector positioning groove 122, it is restricted by the two side groove walls and cannot rotate axially relative to the coil positioning groove 121.

[0040] Since the electromagnetic coil 210 has rotational freedom relative to the clutch shaft, the key feature determining its circumferential angle lies precisely in the orientation of the wire harness connector 212. In the above technical solution, by additionally setting a connector positioning groove 122 on the basis of the coil positioning groove 121, the circumferential angle of the electromagnetic coil 210 is locked by utilizing the "non-rotational symmetry" characteristic of the wire harness connector 212 itself. Once the wire harness connector 212 falls into the connector positioning groove 122, its orientation is restricted by the groove wall, and the circumferential position of the electromagnetic coil 210 relative to the positioning seat 1 is uniquely determined.

[0041] In one embodiment, the second positioning part 12 includes a contoured groove 111, the cross-section of which is used to match the cross-sectional shape of the coil pressure plate 220 in the vertical projection; wherein, the coil positioning groove 121 is formed on the bottom wall of the contoured groove 111, and the connector positioning groove 122 is configured to connect the contoured groove 111 and the coil positioning groove 121 in the horizontal direction.

[0042] "Shaped groove 111" refers to a groove whose opening contour is modeled after the shape of the positioned component (coil pressure plate 220). In this embodiment, it refers to a lower groove whose outline shape projected in the vertical direction corresponds to the outer outline shape of the coil pressure plate 220. Figure 1 As shown, the coil pressure plate 220 is not usually a regular ring, but a plate with several lugs or irregular edges, designed to fit the mounting position of the gearbox housing. Therefore, the contour of the contoured groove 111 also presents a corresponding non-circular shape.

[0043] "Matching cross-sectional shape" should be understood as the contour of the groove 111 being consistent in shape with the outer contour of the coil pressure plate 220, but slightly enlarged in size. This allows the coil pressure plate 220 to fall smoothly into the groove 111 and be constrained in circumferential angle by the groove wall, without being too tight to be difficult to install or remove. The groove 111, coil positioning groove 121, and connector positioning groove 122 form an "upper-lower-side" connection in space: the groove 111 is located at the top, the coil positioning groove 121 is recessed into the bottom wall of the groove 111, and the connector positioning groove 122 penetrates the groove wall of the groove 111 and the groove wall of the coil positioning groove 121 in the horizontal direction, allowing the wire harness connector 212 to pass laterally out of the coil positioning groove 121 and extend into the corresponding position below the groove 111.

[0044] It is worth mentioning that the core objective of the "pre-assembly state" is to ensure that the coil pressure plate 220 is in a state of "downward contact with the electromagnetic coil 210 and matching the circumferential angle of the electromagnetic coil 210" before being installed into the gearbox housing. To achieve this objective, the circumferential angle of the coil pressure plate 220 must also be reliably positioned.

[0045] In the above technical solution, the contoured groove 111 is used to limit the overall shape of the coil pressure plate 220. Compared with the method of positioning by relying on a local feature of the coil pressure plate 220 (such as the threaded hole 221), the contoured groove 111 uses the overall outer contour of the coil pressure plate 220 to achieve "shape locking", which is more reliable and will not affect the positioning accuracy due to the processing deviation of the local feature of the coil pressure plate 220. Furthermore, the bottom wall of the contoured groove 111 and the coil positioning groove 121 form an upper and lower stacked relationship. The assembly sequence of the electromagnetic coil 210 below and the coil pressure plate 220 above can be naturally achieved by the height difference of the groove itself. The connector positioning groove 122 connects the two grooves in the horizontal direction, which cleverly avoids the potential spatial interference between the wire harness connector 212 and the coil pressure plate 220, so that the electromagnetic coil 210 can lead out the wire harness connector 212 laterally without affecting the positioning of the coil pressure plate 220.

[0046] Please see Figure 2 In one embodiment, a bearing positioning groove 13 is formed on the bottom wall of the coil positioning groove 121. The bearing positioning groove 13 is used for the bearing 250 on the integrated clutch assembly that is close to the electromagnetic coil 210 to extend into.

[0047] The inner diameter of the bearing positioning groove 13 should form a clearance fit with the outer diameter of the bearing 250 it accommodates, so that the bearing 250 can fall stably into the groove and be constrained in radial position by the groove wall; the groove depth should meet the requirement that the bearing 250 can be smoothly inserted in the axial direction.

[0048] It should be noted that the electromagnetic coil 210 only has rotational freedom around the axial direction on the clutch shaft and does not bear the axial support function of the assembly. If the entire axial weight of the integrated clutch shaft assembly 200 is directly applied to the electromagnetic coil 210, the electromagnetic coil 210 will be at risk of being crushed, deformed or pushed, which will destroy the previously established pre-assembly state.

[0049] In the above technical solution, an additional bearing positioning groove 13 is opened on the bottom wall of the coil positioning groove 121, so that when the integrated clutch shaft assembly 200 is placed into the positioning seat 1, the set of bearings 250 near the electromagnetic coil 210 can fall directly into the bearing positioning groove 13 and form force contact with the bottom wall of the groove. The gravity of the assembly is directly transmitted to the positioning seat 1 along the path of "bearing 250 - bottom wall of bearing positioning groove 13", thereby bypassing the electromagnetic coil 210, which is a weak link in terms of force.

[0050] In one embodiment, the positioning and holding structure 2 includes a plurality of first positioning posts 22, which extend in the vertical direction and are used to abut against the coil pressure plate 220; wherein, the lower end of the first positioning post 22 forms a limiting protrusion, which is used to extend into the corresponding threaded hole 221 on the coil pressure plate 220.

[0051] The “first positioning post 22” is a columnar member extending in the vertical direction, with its lower end facing the coil pressure plate 220, in order to apply a downward resisting force to the coil pressure plate 220; the “limiting protrusion” is a protruding structure formed at the lower end of the first positioning post 22, with an outer diameter that is smaller than the post body, and its size corresponds to the threaded hole 221 on the coil pressure plate 220, and can extend into the threaded hole 221.

[0052] The specific number of the first positioning pins 22 can be configured according to the distribution of the threaded holes 221 on the coil pressure plate 220. It is advisable to form a multi-point fit with multiple first positioning pins 22 through multiple threaded holes 221. The outer diameter of the limiting protrusion should be slightly smaller than the inner diameter of the threaded hole 221 of the coil pressure plate 220 to ensure smooth insertion and removal without jamming, while also restricting the sliding of the coil pressure plate 220 relative to the first positioning pins 22 in the horizontal direction.

[0053] In the above technical solution, multiple first positioning posts 22 extending vertically are provided. The lower ends of the first positioning posts 22 continuously abut against the coil pressure plate 220, ensuring that the coil pressure plate 220 is always pressed against the electromagnetic coil 210, and the relative position is stably maintained. Furthermore, the first positioning posts 22 extend into the existing threaded holes 221 of the coil pressure plate 220 via limiting protrusions at their lower ends. On the one hand, after the limiting protrusions are inserted into the threaded holes 221, the coil pressure plate 220 is locked horizontally by the first positioning posts 22, preventing further axial rotation and maintaining the pre-assembled circumferential angle. On the other hand, the cooperation between the limiting protrusions and the threaded holes 221 provides a reference for the alignment of the positioning and holding structure 2 relative to the coil pressure plate 220, preventing the coil pressure plate 220 from partially warping due to deviation in the applied clamping force.

[0054] Please see Figure 2 and Figure 5 In one embodiment, the positioning and holding structure 2 further includes a force-bearing pressure plate 21, and a plurality of first positioning posts 22 are formed on the lower end face of the force-bearing pressure plate 21; the force-bearing pressure plate 21 is formed with a clearance hole 21a extending in the vertical direction, the clearance hole 21a is used to allow the first shaft gear 230 of the integrated clutch shaft assembly 200 at the upper end to pass through; the gripping structure 3 abuts against the force-bearing pressure plate 21 downward and is used to grip the first shaft gear 230.

[0055] "Pressure plate 21" refers to the plate-shaped component that receives the downward force of the gripping structure 3 and transmits the force to each of the first positioning posts 22; "avoidance hole 21a" is a through hole formed in the pressure plate 21 along the vertical direction, which is used to allow the first shaft gear 230 at the upper end of the integrated clutch shaft assembly 200 to pass through from bottom to top; "first shaft gear 230" is the shaft gear located at the upper axial end of the DHT150 integrated assembly, which is the force object when the gripping structure 3 clamps the assembly.

[0056] It should be noted that the diameter of the clearance hole 21a should be larger than the maximum outer diameter of the gear 230 on the first shaft to ensure that the gear 230 on the first shaft can pass smoothly through the pressure plate 21 without interfering with the hole wall; the multiple first positioning pins 22 are arranged on the lower end face of the pressure plate 21 according to the distribution pattern of the threaded holes 221 of the coil pressure plate 220. The pressure plate 21 and the multiple first positioning pins 22 form a "clamping assembly" in terms of structure. When the gripping structure 3 abuts against the pressure plate 21, it means that the reaction force generated by the gripping structure 3 lifting the assembly will be transmitted downward through the pressure plate 21 to each of the first positioning pins 22.

[0057] In the above technical solution, by introducing a pressure plate 21 as a common load-bearing base for multiple first positioning posts 22, the downward force applied by the gripping structure 3 at one point (or two points) is first gathered on the pressure plate 21, and then naturally distributed to the upper end of each first positioning post 22 through the pressure plate 21, and then evenly transmitted to the coil pressure plate 220, so that the threaded holes 221 of the coil pressure plate 220 obtain basically consistent clamping force, avoiding problems such as local lifting and deflection due to uneven force. On this basis, an avoidance hole 21a is provided on the pressure plate 21, so that the first shaft gear 230 at the upper end of the integrated clutch shaft assembly 200 can pass through the pressure plate 21 and be exposed above it, so that the gripping structure 3 can directly grip the first shaft gear 230 from above, and press the pressure plate 21 downward at the same time.

[0058] Please continue reading. Figure 2 and Figure 5 In one embodiment, the gripping structure 3 includes a gripping handle 31, the lower end of which abuts against the pressure plate 21 and has a hook 311 protruding in the horizontal direction. The hook 311 is used to extend between the pressure plate 21 and the gear 230 on the first shaft and abuts against the gear 230 on the first shaft.

[0059] "Grab handle 31" refers to a handle for operators to grip and lift the integrated clutch shaft assembly 200, with its lower end facing the pressure plate 21 and the gear 230 on the first shaft; "claw 311" is a claw-shaped structure formed at the lower end of the grab handle 31, protruding horizontally, with its protrusion pointing towards the gear 230 on the first shaft. The claw 311 is clamped between the pressure plate 21 and the gear 230 on the first shaft in the vertical direction, with the pressure plate 21 below and the gear 230 on the first shaft above.

[0060] In the above technical solution, after the hook 311 protrudes horizontally from the lower end of the gripping handle 31, it extends from the side into the space between the pressure plate 21 and the gear 230 on the first shaft, and abuts against the lower side of the gear 230 on the first shaft, thereby lifting the gear 230 on the first shaft in a "hooking" manner; at the same time, the lower end of the gripping handle 31 itself abuts against the upper surface of the pressure plate 21, and can continuously apply downward pressure to the pressure plate 21.

[0061] In one specific embodiment, the upper end face of the hook 311 is rigidly set and the lower end face is elastically set. The upper end face of the hook 311 forms rigid contact with the gear 230 on the first shaft to ensure stable extraction of the gear 230 on the first shaft. The lower end face of the hook 311 can be squeezed into the space between the pressure plate 21 and the gear 230 on the first shaft by elastic deformation.

[0062] Please continue reading. Figure 2 and Figure 5 In one embodiment, the gripping structure 3 includes two gripping handles 31 and a connector 32; the two gripping handles 31 are arranged at intervals in the horizontal direction and are distributed on both radial sides of the first shaft gear 230 at the upper end of the integrated clutch shaft assembly 200. The lower end of the gripping handles 31 is formed with a hook 311 protruding in the horizontal direction, which is used to extend into the bottom of the first shaft gear 230 and abut against the first shaft gear 230 upward; the connector 32 is arranged to connect the upper ends of the two gripping handles 31.

[0063] The gripping handle 31 in this embodiment is structurally the same as the aforementioned gripping handle 31. The difference is that it is limited to two handles arranged in a group, respectively on the radial sides of the gear 230 on the first shaft, and the two handles are connected to each other by a "connector 32" located above. The "connector 32" can be understood here as a connector that connects the upper ends of the two gripping handles 31 together as a whole, facilitating unified operation by the operator.

[0064] "Set at intervals along the horizontal direction" should be understood as the two gripping handles 31 maintaining a certain distance in the horizontal direction. This distance must be greater than the outer diameter of the gear 230 on the first shaft so that the two handles can fall on the radial sides of the gear respectively.

[0065] In the above technical solution, two gripping handles 31 are arranged at intervals in the horizontal direction, and the hooks 311 of the two handles extend from both sides of the gear 230 on the first shaft to the bottom of the gear and jointly abut against the gear. The upward support force on the gear 230 on the first shaft is basically balanced on both radial sides. The integrated clutch shaft assembly 200 can maintain the vertical state of the axis during the lifting process, and the overall gripping is more stable.

[0066] In one embodiment, the connector 32 has two horizontally oriented connecting portions 322, which are respectively connected to two gripping handles 31 and are able to move closer to or further away from each other.

[0067] "Connecting part 322" refers to the portion on the connector 32 that connects to the two gripping handles 31 respectively. In this embodiment, there are two connecting parts 322, each located horizontally and connected to one gripping handle 31. "Able to move closer or further apart" means that the two connecting parts 322 have the ability to move relative to each other in the horizontal direction, allowing them to move closer or further apart. This embodiment does not limit the specific form of relative movement between the two connecting parts 322, and it can be achieved through various structural forms such as sliding connection and swing connection.

[0068] In the above technical solution, by means of the movable structure of the two connecting parts 322 in the connector 32 moving closer or further apart, during the process of gripping the gear 230 on the first shaft, the operator can push the two connecting parts 322 closer together, thereby causing the two gripping handles 31 to close synchronously to clamp the gear 230 on the first shaft; after completing the assembly of the integrated clutch shaft assembly 200, the operator can push the two connecting parts 322 further apart, thereby causing the two gripping handles 31 to open synchronously to release the gear 230 on the first shaft.

[0069] Regarding the "specific form of relative movement between the two connecting parts 322", in a specific embodiment, the two connecting parts 322 are distributed along a first horizontal direction. The connecting member 32 has a connecting body 321 located in the middle. The connecting body 321 extends along a second horizontal direction and has two hinged ends located in the second horizontal direction. A hinge plate 323 is respectively provided between the two connecting parts 322 and the two hinged ends. The two ends of the hinge plate 323 rotate around the axis in the vertical direction, and one end is hinged to the corresponding connecting part 322, and the other end is hinged to the corresponding hinged end of the connecting body 321. The connecting part 322 has an abutting surface facing the connecting body 321. When the abutting surface abuts against the connecting body 321, it can restrict the rotation of the connecting part 322 around the axis in the vertical direction.

[0070] More specifically, a hinge hole is formed at one end of the hinge plate 323 that connects to the connecting part 322, and the hinge hole extends along the length direction of the hinge plate 323.

[0071] In one embodiment, in the horizontal direction, the connector 32 has a connecting body 321 located in the middle, and the connecting body 321 is provided with a second positioning post 3211 extending downward, the second positioning post 3211 being used to extend into the shaft hole at the upper end of the integrated clutch shaft assembly 200.

[0072] "Connecting body 321" refers to the middle part of the connecting member 32 located horizontally between the two connecting parts 322, that is, the main body section of the connecting member 32 used to support the two connecting parts 322 and bridge them into one; "Second positioning post 3211" refers to a columnar member extending downward from the connecting body 321, which faces the upper end of the integrated clutch shaft assembly 200; "shaft hole at the upper end of the integrated clutch shaft assembly 200" specifically refers to the shaft hole of the clutch shaft exposed on the upper end face of the assembly.

[0073] The outer diameter of the "second positioning post 3211" should be slightly smaller than the inner diameter of the aforementioned shaft hole to ensure that the second positioning post 3211 can be smoothly inserted into the shaft hole and has a good centering effect; the axial length of the second positioning post 3211 should be sufficient to allow the lower end of the post to penetrate into the shaft hole to a certain depth when the gripping structure 3 is placed on the gear 230 on the first shaft, without touching the bottom of the shaft hole.

[0074] In the above technical solution, the existing shaft hole at the upper end of the integrated clutch shaft assembly 200 is used as a positioning reference. A second positioning post 3211 extending downward is added to the middle of the connecting piece 32. When the operator lowers the gripping structure 3 onto the assembly from top to bottom, the second positioning post 3211 is inserted into the shaft hole first. With the help of the clearance fit between the shaft hole and the positioning post, the centering of the gripping structure 3 relative to the axis of the assembly can be naturally completed. The two gripping handles 31 are then synchronously brought to the positions symmetrical to the gear 230 on the first shaft, without the need for manual alignment by the operator.

[0075] The present invention also provides a method of using the assembly fixture 100, the method comprising the following steps: Provides positioning base 1, positioning and holding structure 2, gripping structure 3; The electromagnetic coil 210 of the integrated clutch shaft assembly 200 is placed in the coil positioning groove 121 and the connector positioning groove 122 of the positioning seat 1, and the coil pressure plate 220 is placed in the contour groove 111 of the positioning seat 1 (e.g., Figure 3 (as shown) Align the clearance hole 21a of the force-bearing pressure plate 21 in the positioning and holding structure 2 with the gear 230 on the first shaft, and insert the limiting protrusions of the multiple first positioning pins 22 into the multiple threaded holes 221 of the coil pressure plate 220 respectively (e.g., Figure 4 (as shown) Open the two gripping handles 31 of the gripping structure 3 and insert the second positioning pin 3211 into the upper shaft hole of the integrated clutch shaft assembly 200; Move the gripper handle 31 downward so that the hook 311 at the lower end of the gripper handle 31 abuts against the pressure plate 21. The two gripping handles 31 of the gripping structure 3 are closed so that the hooks 311 at the lower end of the gripping handles 31 are squeezed between the gear 230 on the first shaft and the pressure plate 21 (e.g., Figure 5 (as shown) Operate the two gripping handles 31 to lift the integrated clutch shaft assembly 200.

[0076] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An assembly fixture for assembling an integrated clutch shaft assembly in a hybrid-specific transmission, characterized in that, The assembly fixture includes: The positioning seat has an upwardly facing positioning end face, the orientation of which is matched with the axial direction of the integrated clutch shaft assembly. The positioning end face is formed with a first positioning part and a second positioning part, the first positioning part and the second positioning part being respectively used to position the electromagnetic coil and the coil pressure plate of the integrated clutch shaft assembly, so that the coil pressure plate is in a pre-assembly state where it abuts the electromagnetic coil downward and matches the circumferential angle of the electromagnetic coil. A positioning and retaining structure is provided on the integrated clutch shaft assembly and abuts downward against the coil pressure plate to fix the relative position of the coil pressure plate and the electromagnetic coil; and, A gripping structure for gripping the integrated clutch shaft assembly.

2. The assembly fixture as described in claim 1, characterized in that, The first positioning part includes a coil positioning groove and a connector positioning groove that are interconnected. The coil positioning groove is used to position the coil body of the electromagnetic coil, and the connector positioning groove is used to position the wire harness connector of the electromagnetic coil.

3. The assembly fixture as described in claim 2, characterized in that, The second positioning part includes a contoured groove, the cross-section of which is used to match the cross-sectional shape of the coil pressure plate in the vertical projection. The coil positioning groove is formed on the bottom wall of the contoured groove, and the connector positioning groove is arranged horizontally to connect the contoured groove and the coil positioning groove.

4. The assembly fixture as described in claim 2, characterized in that, The bottom wall of the coil positioning groove is formed with a bearing positioning groove, which is used for the bearing on the integrated clutch assembly near the electromagnetic coil to extend into.

5. The assembly fixture as described in claim 1, characterized in that, The positioning and holding structure includes a plurality of first positioning posts, which extend in the vertical direction and are used to abut against the coil pressure plate. The lower end of the first positioning post has a limiting protrusion, which is used to extend into the corresponding threaded hole on the coil pressure plate.

6. The assembly fixture as described in claim 5, characterized in that, The positioning and retaining structure further includes a force-bearing pressure plate, and a plurality of first positioning posts are formed on the lower end face of the force-bearing pressure plate; The pressure plate is formed with a clearance hole that runs through the vertical direction, and the clearance hole is used to allow the gear on the first shaft at the upper end of the integrated clutch shaft assembly to pass through. The gripping structure abuts downward against the pressure plate and is used to grip the gear on the first shaft.

7. The assembly fixture as described in claim 6, characterized in that, The gripping structure includes a gripping handle, the lower end of which abuts against the pressure plate and has a hook protruding in a horizontal direction. The hook is used to extend between the pressure plate and the gear on the first shaft and abuts against the gear on the first shaft upward.

8. The assembly fixture according to any one of claims 1 to 7, characterized in that, The crawling structure includes: Two gripping handles are spaced apart horizontally, positioned radially on either side of the first gear on the upper end of the integrated clutch shaft assembly. The lower end of each gripping handle has a hook protruding horizontally, which extends into the bottom of the first gear and abuts against it upwards. A connector is provided at the upper end of the two gripping handles.

9. The assembly fixture as described in claim 8, characterized in that, The connector has two horizontal connecting parts, which are respectively connected to the two gripping handles and can move closer to or further away from each other.

10. The assembly fixture as described in claim 8, characterized in that, In the horizontal direction, the connector has a connecting body located in the middle, and the connecting body is provided with a second positioning post extending downward, the second positioning post being used to extend into the shaft hole at the upper end of the integrated clutch shaft assembly.

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