Press fitting tool for rotor coil and fixing ring of starting motor

Abstract

The utility model discloses a starter motor rotor coil and fixing ring press fitting tool, which comprises a bottom plate, a fixing seat, an inner die and a spring, one end of the fixing seat is fixed on the bottom plate, the fixing seat is provided with an assembly hole, a first step is arranged in the assembly hole, the inner die is in sliding fit with the assembly hole, and the spring is arranged on the inner die. A first groove is formed among the inner mold, the inner wall of the assembly hole and the first step, a groove is formed in one end of the inner mold, one end of the spring is matched with the other end of the inner mold, the other end of the spring is matched with the bottom plate or the fixing base, the supporting component is fixed to the other end of the fixing base, and the driver is fixed to the support. The power output end of the driver is fixed to the pressing head, and the pressing head is provided with a stepped hole used for being matched with the armature shaft. According to the utility model, the consistency of the press-in size of the fixing ring can be ensured, and the end of the armature shaft can be prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the field of assembling a rotor coil package and a fixing ring of a starter motor, and in particular to a press-fitting tool for a rotor coil package and a fixing ring of a starter motor. Background Art

[0002] The starter motor is an ignition and starting device for internal combustion engine vehicles, such as Figure 1 As shown, the rotor of the starter motor is composed of an iron core 3, a coil 4, and an armature shaft 5. The armature shaft 5 passes through the iron core 3 and cooperates with the iron core 3. The coil 4 cooperates with the iron core 3. A commutator 1 is provided at one end of the iron core 3, and a fixing ring 2 is provided at one end of the coil 4. Usually, the fixing ring 2 is pressed onto the coil 4 using a pressing tool.

[0003] The existing fixed ring press fitting includes a spring, an outer mold, an inner mold, and a copper rod. The outer mold is provided with an assembly hole, and the inner mold is slidably matched with the assembly hole on the outer mold. A step is provided in the assembly hole. One end of the inner mold is provided with a groove. One end of the spring abuts against the other end of the inner mold 3a, and the other end of the spring abuts against the support platform (the support platform is not shown in the figure). The use process is as follows:

[0004] Place the fixing ring on the step in the assembly hole of the outer mold, put the fixing ring on the inner mold, and let the armature shaft 5 and the commutator 1 pass through the fixing ring 2 and enter the groove on the inner mold. The operator holds the rotor with one hand and uses a copper rod with the other hand to knock the B end of the armature shaft 5, so that the rotor and the inner mold can overcome the force of the spring and move downward. The fixing ring 2 is put on the wire package 4, and the fixing ring 2 is pressed.

[0005] In the process of assembling the fixing ring 2 and the wire package 4 using the above-mentioned tooling, not only is the labor intensity of the operators high, but the force of the operators' knocking with the copper rod is uncontrollable, causing uneven force on the product during the press-fitting process, which can easily cause inconsistency in the first dimension L1 of the fixing ring 2 (the first dimension L1 is the distance between the A end of the commutator 1 and the end face of the fixing ring shaft), that is, it may cause the fixing ring 2 to form a tilted state after the press-fitting process, resulting in the inability to guarantee the first dimension L1 of each part. And knocking can easily damage the armature shaft 5, and will also cause abnormal noise in the assembly installation, seriously affecting the quality of the product. In addition, the second dimension L2 of the wire package 4 is also displaced, and in the subsequent processing process, the fixing ring 2 may fall off or be turned off by half, causing the rotor to be scrapped. Summary of the invention

[0006] In view of the above problems, the utility model provides a press-fitting tool for the rotor winding package and the fixing ring of the starter motor. The utility model can ensure the consistency of the pressing size of the fixing ring and avoid damaging the end of the armature shaft.

[0007] The technical solutions to the above technical problems are as follows:

[0008] The press-fitting tooling for the rotor winding package and the fixed ring of the starting motor includes a base plate, a fixing seat, an inner mold, and a spring. One end of the fixing seat is fixed on the base plate, the fixing seat is provided with an assembly hole, a first step is provided in the assembly hole, the inner mold and the assembly hole are slidably matched, and a first groove is formed between the inner mold and the inner wall of the assembly hole and the first step. One end of the inner mold is provided with a groove, one end of the spring is matched with the other end of the inner mold, and the other end of the spring is matched with the base plate or the fixing seat. It also includes a supporting component, a bracket, a pressure head, and a driver. The supporting component is fixed to the other end of the fixing seat, the driver is fixed to the bracket, the power output end of the driver is fixed to the pressure head, and the pressure head is provided with a step hole for matching with the armature shaft.

[0009] Furthermore, the cross-section of the support component includes an inner arc edge, an outer arc edge, and an end connecting edge. After the end connecting edge is connected to the ends of the inner arc edge and the outer arc edge, an open groove for cooperating with the starter motor rotor is formed on the support component.

[0010] Furthermore, the curvature of the inner arc-shaped edge and the outer arc-shaped edge is greater than 180 degrees.

[0011] Furthermore, the center of the inner arc-shaped side is concentric with the center of the outer arc-shaped side, and the radius of the inner arc-shaped side is smaller than the radius of the outer arc-shaped side.

[0012] Furthermore, a limiting step is provided on the inner wall of the assembly hole, and a positioning step for cooperating with the limiting step is provided on the outer peripheral surface of the inner mold.

[0013] Furthermore, it also includes an adjustment mechanism for adjusting the distance between the commutator end face of the rotor and the armature shaft end face, the other end of the inner mold is provided with a mounting hole, one end of the adjustment mechanism cooperates with the mounting hole, and the other end of the adjustment mechanism is connected to the base plate.

[0014] Furthermore, the adjustment mechanism includes a nut, a screw rod, and a top tube. A through hole is provided on the bottom plate. The nut is fixed to the bottom plate. The centers of the nut and the through hole are located on the same straight line. The screw rod passes through the nut and the through hole and is connected to the top tube. The screw rod is threadedly connected to the nut, and the top tube cooperates with the mounting hole.

[0015] The use process of the utility model is as follows: a fixed ring is sleeved on the inner mold, and the fixed ring enters the first groove and is supported by the first step. The end of the rotor with the commutator is inserted into the groove, so that the end face of the armature shaft matches with the top cylinder, and the rotor matches with the open groove, and the rotor is supported by the support component to prevent the rotor from tipping over, and at the same time, the operator cannot support the rotor by hand. According to the model of the rotor, the screw is turned to adjust the height of the top cylinder, so that the spacing between the lower end of the armature shaft and the fixed seat is adjusted to an appropriate level, and the driver is started to work. The driver drives the pressure head to move downward, and the upper end of the armature shaft passively enters the step hole. The wire package is pressed by the pressure head to ensure that the second size on the wire package does not shift when the fixed ring is pressed. As the pressure head continues to move downward, the pressure output by the driver overcomes the tension of the spring, so that the inner mold moves downward. When one end (upper end face) of the inner mold is located below the fixed ring, the fixed ring is sleeved on the wire package. The driver drives the pressure head to reset, and the inner mold is reset under the tension of the spring. Finally, the successfully pressed rotor is taken out from the inner mold.

[0016] The beneficial effects of the utility model are as follows: during the press-fitting process, the utility model makes the rotor evenly stressed, avoids the tilted state of the fixed ring after press-fitting, keeps the straight-line distance (first dimension) from each part of the fixed ring to the end of the commutator consistent, avoids the fixed ring falling off and causing the rotor to be unqualified, is beneficial to the product quality process control in the production process, and reduces the production and manufacturing cost. In addition, since the rotor is supported by the supporting component, the operator does not need to hold the rotor by hand, and the driver and the pressure head are used to press the rotor, and there is no need to use a copper rod to knock the armature shaft, thereby reducing the labor intensity of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the starter motor rotor.

[0018] Figure 2 The utility model is a cross-sectional view of the press-fitting tooling for the rotor winding package and the fixing ring of the starter motor.

[0019] Figure 3 A cross-sectional view of the fixing seat.

[0020] Figure 4 for Figure 3 Enlarged view of the Q section in .

[0021] Figure 5 This is a cross-sectional view of the inner mold.

[0022] Figure 6 A top view of the supporting component.

[0023] Markings in the accompanying drawings:

[0024] Commutator 1, fixing ring 2, iron core 3, winding 4, armature shaft 5, first dimension L1, second dimension L2, distance L between the end face of commutator and the end face of armature shaft.

[0025] Base plate 10, through hole 10a, fixing seat 11, assembly hole 11a, first step 11b, first groove 11c, limiting step 11d, first connecting hole 11e, inner mold 12, groove 12a, positioning step 12b, mounting hole 12c, spring 13, supporting part 14, inner arc edge 14a, outer arc edge 14b, end connecting edge 14c, opening groove 14d, first through hole 14e, bracket 15, pressing head 16, step hole 16a, driver 17, nut 18, screw 19, top cylinder 20. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0027] like Figures 1 to 6 As shown, the press-fitting tooling of the rotor winding package of the starting motor and the fixing ring of the utility model comprises a base plate 10, a fixing seat 11, an inner mold 12, a spring 13, a supporting component 14, a bracket 15, a pressing head 16, and a driver 17. One end of the fixing seat 11 is fixed on the base plate 10, and an assembly hole 11a is provided on the fixing seat 11. A first step 11b is provided in the assembly hole 11a, and the first step 11b is used to support the fixing ring 2. The inner mold 12 is slidably matched with the assembly hole 11a, and a first groove 11c is formed between the inner mold 12 and the inner wall of the assembly hole 11a and the first step 11b. A groove 12a is provided at one end of the inner mold 12, and one end of the spring 13 is matched with the other end of the inner mold 12, and the other end of the spring 13 is matched with the base plate 10 or the fixing seat 11. The assembly hole 11a is preferably a through hole, so the other end of the spring 13 is preferably matched with the base plate 10.

[0028] The support component 14 is fixed to the other end of the fixing seat 11 and is used to support the rotor. That is, when the commutator 1 of the rotor is inserted into the groove 12a on the inner mold 12, the support component 14 supports the rotor, thus avoiding the operator holding the rotor with hands.

[0029] In the present invention, the cross section of the support component 14 includes an inner arcuate edge 14a, an outer arcuate edge 14b, and an end connecting edge 14c. After the end connecting edge 14c is connected to the ends of the inner arcuate edge 14a and the outer arcuate edge 14b, an open groove 14d for matching with the starter motor rotor is formed on the support component 14. This is also convenient for matching with the rotor. For rotors with different maximum outer diameters, it is only necessary to replace the support component 14 of the corresponding size.

[0030] The arc angles of the inner arc side 14a and the outer arc side 14b are greater than 180 degrees. The center of the inner arc side 14a is concentric with the center of the outer arc side 14b, and the radius of the inner arc side 14a is smaller than the radius of the outer arc side 14b. The above structure makes the support component 14 a part of a circular ring, and the support component 14 of this structure is conducive to reducing costs.

[0031] A first connecting hole 11e is provided on the axial end face of the fixing seat 11, and a first through hole 14e penetrating the axial end face of the supporting member 14 is provided on the supporting member 14. After the supporting member 14 is placed on the fixing seat 11, a screw is passed through the first through hole 14e and is threadedly connected to the first connecting hole 11e, so that the supporting member 14 and the fixing seat 11 are fastened together.

[0032] The driver 17 is fixed to the bracket 15, and the power output end of the driver 17 is fixed to the pressure head 16. The pressure head 16 is provided with a stepped hole 16a for matching with the armature shaft 5. The driver 17 is a linear drive component, and the linear drive component can be a conventional component such as a cylinder, a hydraulic cylinder, etc. In the utility model, a cylinder is preferably used.

[0033] A limiting step 11d is provided on the inner wall of the assembly hole 11a, and a positioning step 12b for cooperating with the limiting step 11d is provided on the outer peripheral surface of the inner mold 12. The inner mold 12 rises along the fixed seat 11, and when the positioning step 12b is combined with the limiting step 11d, the inner mold 12 cannot rise further. Since the fixing ring 2 is supported by the first step 11b and is sleeved on the inner mold 12, the inner mold 12 is limited from rising to the highest position by combining the positioning step 12b with the limiting step 11d. Therefore, the distance between the first step 11b and the end face of one end of the inner mold 12 is constant, and in the process of pressing the inner mold 12 downward by the pressure head 16, it is helpful to ensure that the fixing ring 2 is sleeved on the wire package 4.

[0034] Since the distance L between the end face of the commutator 1 and the end face of the armature shaft 5 is different for rotors of different models, if it is necessary to make the press-fitting tooling of the utility model universal, the utility model also includes an adjustment mechanism for adjusting the distance L between the end face of the commutator 1 of the rotor and the end face of the armature shaft 5. The other end of the inner mold 12 is provided with a mounting hole 12c, one end of the adjustment mechanism cooperates with the mounting hole 12c, and the other end of the adjustment mechanism is connected to the base plate 10.

[0035] The adjustment mechanism includes a nut 18, a screw rod 19, and a top tube 20. A through hole 10a is provided on the bottom plate 10. The nut 18 is fixed to the bottom plate 10. The centers of the nut 18 and the through hole 10a are located on the same straight line. The screw rod 19 passes through the nut 18 and the through hole 10a and is connected to the top tube 20. The screw rod 19 is threadedly connected to the nut 18, and the top tube 20 cooperates with the mounting hole 12c. In the utility model, the top tube 20 and the mounting hole 12c are clearance-matched.

[0036] When it is necessary to adjust the height position of the top cylinder 20, the screw 19 is rotated forward or reversely, and the screw 19 rises or falls along the inner mold 12. The top cylinder 20 rises or falls with the screw 19, so that the height position of the top cylinder 20 in the groove 12a is adjusted. The top cylinder 20 is matched with the end face of the armature shaft 5, so that rotors of different models are matched with the groove 12a at a suitable position.

[0037] The use process of the utility model is as follows:

[0038] Put the fixing ring 2 on the inner mold 12, and the fixing ring 2 enters the first groove 11c and is supported by the first step 11b. Insert the end of the rotor with the commutator 1 into the groove 12a, so that the end face of the armature shaft 5 matches the top tube 5, and the rotor matches the open groove 14d, and the rotor is supported by the support component 14 to prevent the rotor from tipping over, and at the same time, the operator cannot support the rotor with his hands. According to the model of the rotor, turn the screw 19 to adjust the height of the top tube 20, so that the distance between the lower end of the armature shaft 5 and the fixed seat 11 is adjusted to an appropriate level, start the driver 17 to work, and the driver 17 drives the pressure head 16 to move downward, and the upper end of the armature shaft 5 passively enters the step hole 16a, and the coil 4 is pressed by the pressure head 16 to ensure that the second dimension L2 on the coil 4 does not shift when the fixing ring 2 is pressed. As the ram 16 continues to move downward, the pressure output by the driver 17 overcomes the tension of the spring 13, causing the inner mold 12 to move downward. When one end (upper end face) of the inner mold 12 is located below the fixing ring 2, the fixing ring 2 is sleeved on the wire package 4. The driver 17 drives the ram 16 to reset, and the inner mold 12 is reset under the tension of the spring 13, and finally the successfully pressed rotor is taken out of the inner mold 12.

[0039] Finally, it should be noted that the above-described implementation mode is only a preferred embodiment of the utility model to illustrate the technical solution of the utility model, and does not limit it, let alone limit the protection scope of the utility model; although the utility model is described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the protection scope of the claims.

Claims

1. A press-fitting tool for a starter motor rotor winding package and a fixing ring, comprising a base plate (10), a fixing seat (11), an inner mold (12), and a spring (13), wherein one end of the fixing seat (11) is fixed to the base plate (10), the fixing seat (11) is provided with an assembly hole (11a), a first step (11b) is provided in the assembly hole (11a), the inner mold (12) and the assembly hole (11a) are slidably matched, a first groove (11c) is formed between the inner mold (12) and the inner wall of the assembly hole (11a) and the first step (11b), one end of the inner mold (12) is provided with a groove (12a), one end of the spring (13) is matched with the other end of the inner mold (12), and the other end of the spring (13) is matched with the base plate (10) or the fixing seat (11), characterized in that: It also includes a support component (14), a bracket (15), a pressure head (16), and a driver (17). The support component (14) is fixed to the other end of the fixing seat (11), the driver (17) is fixed to the bracket (15), the power output end of the driver (17) is fixed to the pressure head (16), and the pressure head (16) is provided with a stepped hole (16a) for matching with the armature shaft (5).

2. The press-fitting tool for the rotor winding package and the fixing ring of the starter motor according to claim 1 is characterized in that: The cross section of the support component (14) comprises an inner arcuate edge (14a), an outer arcuate edge (14b), and an end connecting edge (14c); after the end connecting edge (14c) is connected to the ends of the inner arcuate edge (14a) and the outer arcuate edge (14b), an open groove (14d) for cooperating with a rotor of a starter motor is formed on the support component (14).

3. The press-fitting tool for the rotor winding package and the fixing ring of the starter motor according to claim 2 is characterized in that: The curvatures of the inner arc-shaped edge (14a) and the outer arc-shaped edge (14b) are greater than 180 degrees.

4. The press-fitting tool for the rotor winding package and the fixing ring of the starter motor according to claim 2 is characterized in that: The center of the inner arc-shaped edge (14a) is concentric with the center of the outer arc-shaped edge (14b), and the radius of the inner arc-shaped edge (14a) is smaller than the radius of the outer arc-shaped edge (14b).

5. The press-fitting tool for the rotor winding package and the fixing ring of the starter motor according to claim 1, characterized in that: A limiting step (11d) is provided on the inner wall of the assembly hole (11a), and a positioning step (12b) for cooperating with the limiting step (11d) is provided on the outer peripheral surface of the inner mold (12).

6. The press-fitting tool for the rotor winding package and the fixing ring of the starter motor according to claim 1, characterized in that: It also includes an adjustment mechanism for adjusting the distance (L) between the end surface of the commutator (1) of the rotor and the end surface of the armature shaft (5); the other end of the inner mold (12) is provided with a mounting hole (12c); one end of the adjustment mechanism cooperates with the mounting hole (12c); and the other end of the adjustment mechanism is connected to the base plate (10).

7. The press-fitting tool for the rotor winding package and the fixing ring of the starter motor according to claim 6 is characterized in that: The adjustment mechanism comprises a nut (18), a screw rod (19), and a top tube (20); a through hole (10a) is provided on the bottom plate (10); the nut (18) is fixed to the bottom plate (10); the centers of the nut (18) and the through hole (10a) are located on the same straight line; the screw rod (19) passes through the nut (18) and the through hole (10a) and is connected to the top tube (20); the screw rod (19) is threadedly connected to the nut (18); and the top tube (20) cooperates with the mounting hole (12c).

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