An installation tool for the parking motor of an electric vehicle reducer

Abstract

The utility model provides an installation tool for a parking motor of an electric vehicle reducer, including a clamping device, a positioning device, a slide and a fixed seat; the parking motor is connected to the positioning device, and the parking motor is composed of a parking motor housing, a brake shaft and a compression spring. The positioning device is composed of three positioning pins, three pin limit pins and a flange; each of the positioning pins is composed of a first cylindrical part, a second cylindrical part and a base, and three cylindrical holes are provided on the parking motor housing, and the three cylindrical holes match the first cylindrical parts of the three positioning pins. This setting enables the operator to easily complete the parking motor assembly task, and saves the operator's labor intensity to the maximum extent; at the same time, when the parking motor is installed using the technical solution described in this application, no damage will be caused to the parking motor and the reducer housing, thereby increasing the service life of the reducer.

Description

Technical Field

[0001] The utility model relates to the field of installation of a parking motor of a speed reducer, in particular to an installation tool for a parking motor of a speed reducer of an electric vehicle. Background Art

[0002] Unlike traditional motors, the parking motor is more like a cylinder (or oil cylinder) because the brake shaft of the parking motor does not rotate but telescopically moves; when the parking motor is installed on the reducer housing, in addition to the basic stopper positioning and screw tightening, the most difficult part is to insert the brake shaft of the parking motor into the power output cut-off mechanism (commonly, the brake shaft cooperates with the parking gear or rack); when the brake shaft cooperates with the power output cut-off mechanism, the brake shaft needs to be compressed and the pressure required for this action is very large (it can be understood that there is a compression spring inside the motor to force the brake shaft outward, and the compression force of the spring is very large. If the compression force is small, it is easy to cause the brake shaft to disengage from the parking gear or rack, and the power output cannot be cut off).

[0003] With the popularity of electric vehicles, the output of reducers is also increasing; nowadays, most companies use the following two methods when assembling parking motors: one is to use an automatic press to press and assemble through a large-bore air cylinder, oil cylinder or electric cylinder; the other is pure manual assembly. For method one, the cost is too high, and once the press fails, the aluminum housing of the reducer or the parking motor will be crushed and scrapped; for method two, at least two operators are required to cooperate. Operator 1 uses all his strength to compress the brake shaft and position the parking motor and the reducer housing with the stopper and screw holes, and operator 2 tightens the screws after operator 1 completes the positioning work. It is worth noting that, taking three screws as an example, in theory, operator 1 needs operator 2 to tighten all three screws before letting go, otherwise the parking motor will pop out and fall due to the screws not being tightened in place or being damaged. Its tediousness and work efficiency are self-evident. Utility Model Content

[0004] The utility model aims to overcome the above technical defects and provide an electric vehicle reducer parking motor installation tool which saves cost and manpower when installing the parking motor and allows the operator to easily complete the parking motor assembly task.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an electric vehicle reducer parking motor installation tool, including a clamping device, a positioning device, a slide and a fixed seat; the parking motor is connected to the positioning device, and the parking motor is composed of a parking motor housing, a brake shaft and a compression spring.

[0006] Furthermore, the positioning device is composed of three positioning pins, three pin limit pins and a flange; each of the positioning pins is composed of a first cylindrical portion, a second cylindrical portion and a base, and the second cylindrical portion is located between the first cylindrical portion and the base; a first through hole and a second through hole are provided on the second cylindrical portion; the first through hole matches with a fastening screw; and the second through hole matches with a fastening screw.

[0007] Furthermore, three cylindrical holes are arranged on the parking motor housing, the three cylindrical holes match the first cylindrical parts of the three positioning pins, and the diameters of the three cylindrical holes are smaller than the diameter of the second cylindrical parts.

[0008] Furthermore, it also includes a parking rack and a reducer housing; the center of the parking rack and the center of the brake shaft are on the same horizontal line, and a through hole that can pass the brake shaft is arranged in the middle of the reducer housing.

[0009] Furthermore, a through hole is provided on the fixing seat, a connecting block is provided in the through hole; and an axial hole is provided in the connecting block.

[0010] Furthermore, the clamp pressing device is composed of an output shaft, a connecting frame and a handle, the output shaft is located in the shaft hole in the connecting block, and the connecting frame is connected to the connecting block and the handle respectively.

[0011] Furthermore, the slide table is composed of a linear guide rail and a slide plate, and the slide plate is connected to a flange.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] Compared with the prior art, the utility model not only saves costs and manpower when solving the installation of the parking motor, but also allows the operator to easily complete the parking motor assembly task, thereby minimizing the operator's labor intensity; at the same time, when the parking motor is installed using the technical solution described in this application, no damage is caused to the parking motor and the reducer housing, thereby increasing the service life of the reducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] in:

[0016] Figure 1 The schematic diagram of the parking motor structure is fixed by the positioning device;

[0017] Figure 2 This is a schematic diagram of the structure of the parking motor installed on the reducer housing;

[0018] Figure 3 The schematic diagram of the parking motor structure after the positioning device leaves the parking motor after the parking motor is installed on the reducer;

[0019] Figure 4 for Figure 3 A cross-sectional view of

[0020] Figure 5 This is a schematic diagram of the reducer housing structure.

[0021] In the figure: 1 is the parking motor; 2 is the positioning device; 3 is the clamping device; 4 is the parking rack; 5 is the reducer housing; 6 is the slide; 7 is the fixed seat; 11 is the brake shaft; 12 is the compression spring; 21 is the first positioning pin shaft; 22 is the second positioning pin shaft; 24 is the flange; 25 is the first pin shaft limit pin; 26 is the second pin shaft limit pin; 41 is the first screw hole of the parking motor; 42 is the second screw hole of the parking motor; 43 is the third screw hole of the parking motor; 51 is the first cylindrical part; 52 is the second cylindrical part; 53 is the first through hole; 54 is the second through hole; 55 is the fastening screw; 56 is the base; 57 is the output shaft; 58 is the connecting frame; 59 is the handle; 60 is the connecting block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] like Figure 1-Figure 5 As shown, an electric vehicle reducer parking motor installation tool includes a clamp clamping device 3, a positioning device 2, a slide 6 and a fixing seat 7; the parking motor 1 is connected to the positioning device 2, and the parking motor 1 is composed of a parking motor housing, a brake shaft 11 and a compression spring 12.

[0024] Furthermore, the positioning device 2 is composed of three positioning pins, three pin limit pins and a flange 24; each of the positioning pins is composed of a first cylindrical portion 51, a second cylindrical portion 52 and a base 56, and the second cylindrical portion 52 is located between the first cylindrical portion 51 and the base 56; a first through hole 53 and a second through hole 54 are provided on the second cylindrical portion 52; the first through hole 53 matches with the fastening screw 55; the second through hole 54 matches with the fastening screw 55.

[0025] Furthermore, the parking motor housing is provided with three cylindrical holes, which match the first cylindrical parts 51 of the three positioning pins, and the diameters of the three cylindrical holes are smaller than the diameter of the second cylindrical part 52. The key point of this application is that the outer diameter of the first cylindrical part 51 and the screw hole of the parking motor are matched, and the clearance is guaranteed to be between 0.025-0.035mm, so that the stopper of the parking motor can smoothly enter the stopper corresponding to the reducer housing; under the premise of ensuring the processing dimensional accuracy, the parking motor can be quickly assembled without damaging the parking motor installation stopper or the reducer housing installation stopper.

[0026] Furthermore, it also includes a parking rack 4 and a reducer housing 5; the center of the parking rack 4 is on the same horizontal line as the center of the brake shaft 11, and a through hole that can pass the brake shaft 11 is provided in the middle of the reducer housing 5.

[0027] Furthermore, a through hole is provided on the fixing seat 7, a connecting block 60 is provided in the through hole; and an axial hole is provided in the connecting block 60.

[0028] Furthermore, the clamp pressing device 3 is composed of an output shaft 57, a connecting frame 58 and a handle 59. The output shaft 57 is located in the shaft hole in the connecting block 60, and the connecting frame 58 is connected to the connecting block 60 and the handle 59 respectively.

[0029] Further, the slide 6 is composed of a linear guide rail and a slide plate, and the slide plate is connected to the flange 24. This structure enables the parking motor positioning pin to move left and right with the slide plate.

[0030] Parking motor installation steps:

[0031] In the initial test state, the positioning device 2 is located on the slide 6 and close to the left side of the fixing seat. The first positioning pin 21, the second positioning pin 22 and the third positioning pin are respectively inserted into the three cylindrical holes on the parking motor housing 31, thereby completing the positioning of the parking motor 1.

[0032] At this time, there is a certain distance between the output shaft 57 and the parking motor 1 .

[0033] Then, the positioning device 2 is moved to the far left along the slide 6, and the handle 59 of the clamp pressing device 3 is moved to extend the output shaft 57 to the left. At this time, the output shaft 57 is in contact with the parking motor 1 and pushes the parking motor 1 to move toward the reducer housing 5. Then, the side of the brake shaft 11 close to the parking rack 4 contacts the parking rack 4, and the brake shaft 11 remains stationary. At this time, the output shaft 57 pushes the parking motor 1 to continue to move toward the reducer housing 5. Since the brake shaft 11 remains stationary at this time, the parking motor housing and the compression spring 12 continue to move toward the reducer housing 5. Since the brake shaft 11 remains stationary, the movable space of the compression spring 12 becomes smaller, and the compression spring 12 continues to be compressed until the parking motor housing contacts the reducer housing 5. The principle is that when the brake shaft contacts the parking rack, it will compress the compression spring inside the parking motor. The compression will give the parking motor a rightward force, causing the parking motor to move to the right and break away from the reducer housing. The self-locking angle characteristics of the power-assisted clamp prevent the parking motor from moving to the right and breaking away from the reducer housing.

[0034] The handle 59 of the clamp pressing device 3 can ensure that the compression spring 12 is always kept in a pressed state.

[0035] Loosen the fastening screw 55 to make the fastening screw 55 completely leave the second through hole 54, then withdraw the first positioning pin shaft 21 to the right out of the parking motor 1, then install the fastening screw on the first through hole 53 and tighten it. Similarly, withdraw the second positioning pin shaft 22 and the third positioning pin shaft out of the parking motor. After all the fastening screws are tightened, bend the clamp clamping device 3 back to its original position.

[0036] It should be noted that the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0037] The above disclosure is only the preferred embodiment of the present application, which certainly cannot be used to limit the scope of rights of the present application. Therefore, equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. An electric vehicle reducer parking motor installation tool, characterized in that: It includes a clamping device, a positioning device, a slide and a fixed seat; the parking motor is connected to the positioning device, and the parking motor is composed of a parking motor housing, a brake shaft and a compression spring; the positioning device is composed of three positioning pins, three pin limit pins and a flange; each of the positioning pins is composed of a first cylindrical part, a second cylindrical part and a base, and the second cylindrical part is located between the first cylindrical part and the base; a first through hole and a second through hole are arranged on the second cylindrical part; the first through hole matches with a fastening screw; the second through hole matches with a fastening screw.

2. The electric vehicle reducer parking motor installation tool according to claim 1, characterized in that: The parking motor housing is provided with three cylindrical holes, the three cylindrical holes match the first cylindrical parts of the three positioning pins, and the diameters of the three cylindrical holes are smaller than the diameters of the second cylindrical parts.

3. The electric vehicle reducer parking motor installation tool according to claim 1, characterized in that: It also includes a parking rack and a reducer housing; the center of the parking rack and the center of the brake shaft are on the same horizontal line, and a through hole that can pass the brake shaft is arranged in the middle of the reducer housing.

4. The electric vehicle reducer parking motor installation tool according to claim 1, characterized in that: The fixing seat is provided with a through hole, a connecting block is provided in the through hole, and an axial hole is provided in the connecting block.

5. The electric vehicle reducer parking motor installation tool according to claim 4 is characterized in that: The clamp pressing device is composed of an output shaft, a connecting frame and a handle. The output shaft is located in the shaft hole in the connecting block, and the connecting frame is connected to the connecting block and the handle respectively.

6. The electric vehicle reducer parking motor installation tool according to claim 1, characterized in that: The slide table is composed of a linear guide rail and a slide plate, and the slide plate is connected to a flange.

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