Motor rotor bearing press-fitting mechanism for automobile seat driver

Abstract

The utility model discloses a motor rotor bearing press-fitting mechanism for an automobile seat driver, which is characterized in that the motor rotor bearing press-fitting mechanism comprises a bearing positioning part, a driving part and a positioning piece which are arranged on a countertop, and the bearing positioning part comprises a sliding frame, a bearing positioning block and a rotary driving part for driving the bearing positioning block to rotate; the sliding frame is arranged on the positioning piece in a sliding manner; a bearing pushing hole and a bearing positioning hole which are coaxially formed are formed in the bearing positioning block, and the diameter of the bearing positioning hole is larger than that of the bearing pushing hole; the driving part comprises a first driving part and a second driving part, the first driving part drives the bearing positioning part to move along the positioning piece, the second driving part is arranged at the outer end of the sliding frame, a push rod is arranged on the second driving part, and the second driving part drives the inner end of the push rod to be inserted into the bearing push hole or separated from the bearing push hole. According to the utility model, 90-degree turnover material receiving and press fitting of the bearing can be realized.

Description

Technical Field

[0001] The utility model relates to a production and processing device for an automobile seat driver, in particular to a motor rotor bearing press-fitting mechanism for the automobile seat driver. Background Art

[0002] Car seats provide drivers and passengers with easy-to-use, comfortable, and safe driving and riding positions. Car seats can be adjusted manually or electrically. Electrically adjustable car seats primarily utilize a driver to move the seat or adjust the backrest angle.

[0003] The motor is the main power component in the drive, and the motor mainly includes the motor rotor. Bearings need to be installed at both ends of the motor rotor to support the weight of the rotor and ensure that the rotor can rotate smoothly. In the prior art, the bearings and rotors of electronic rotors are generally assembled automatically or semi-automatically. For example, application number: 202323370937.1, patent name: A semi-automatic bearing pressing machine for motor rotor bearing installation, this mechanism has the following shortcomings:

[0004] 1. The bearing can only be set above the cylinder. If there is insufficient space above the cylinder or other conditions that cannot occupy the upper space, this structure cannot be realized.

[0005] 2. If the bearing loading is set on the side of the cylinder and the bearing loading direction and installation direction are 90 degrees, this structure cannot be realized. Summary of the Invention

[0006] The utility model aims to provide a motor rotor bearing press-fitting mechanism for an automobile seat driver. By using the structure, 90-degree flipping, material connection and press-fitting can be achieved, and the stability of the press-fitting can also be ensured.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: a motor rotor bearing press-fitting mechanism for a car seat driver, comprising a bearing positioning portion and a driving portion mounted on a table panel, wherein the table panel is provided with a positioning piece, and the bottom of the bearing positioning portion is slidably mounted on the positioning piece;

[0008] The bearing positioning portion includes a slide, a bearing positioning block rotatably mounted on the slide, and a rotation driving portion for driving the bearing positioning block to rotate, wherein the slide is slidably mounted on the positioning member;

[0009] The middle part of the bearing positioning block is provided with a bearing push hole with two ends passing through, and one end of the bearing positioning block is further provided with a bearing positioning hole coaxially arranged with the bearing push hole, and the diameter of the bearing positioning hole is larger than the diameter of the bearing push hole;

[0010] The driving part includes a first driving part that drives the bearing positioning part to move along the positioning member and a second driving part arranged at the outer end of the slide. The second driving part is provided with a push rod, and the second driving part drives the inner end of the push rod to be inserted into the bearing push hole or to be separated from the bearing push hole.

[0011] In the above technical solution, the push rod is arranged parallel to the extension direction of the positioning member, the middle portion of the push rod is movably connected to the slide, the fixed end of the second driving part is installed on the table panel, the driving end of the second driving part is arranged opposite to the bearing positioning part, and the driving end of the second driving part is connected to the outer end of the push rod;

[0012] The inner end of the push rod is provided with a clearance hole, and the inner surface of the inner end of the clearance hole is provided with a tapered guide hole.

[0013] In the above technical solution, the second driving part is a second driving cylinder. When the output shaft of the second driving cylinder is extended, the inner end of the push rod passes through the bearing push hole and the bearing positioning hole and is exposed to the outside of the bearing positioning block;

[0014] When the output shaft of the second driving cylinder is in a retracted state, the inner end of the push rod moves outward to escape from the bearing push hole and is disposed outside the bearing positioning block.

[0015] In the above technical solution, the first driving part is installed on the table panel, the first driving part is a first driving cylinder, the fixed end of the first driving cylinder is connected to the table panel, and the driving end of the first driving cylinder is connected to the slide; when the output shaft of the first driving cylinder is extended, the slide is pushed away from the second driving part; when the output shaft of the first driving cylinder is retracted, the slide is pulled close to the second driving part.

[0016] In the above technical solution, the first driving part is installed on the bottom surface of the table panel, and a first strip-shaped through groove is provided on the bottom surface of the table panel to communicate with the top surface of the table panel. The bottom of the slide is connected to the driving end of the first driving part via the first vertical plate;

[0017] An adjustable stopper is also provided on the bottom surface of the table panel, and the stopper is arranged at the inner end of the first vertical plate.

[0018] In the above technical solution, the slide is a U-shaped structure, a U-shaped groove is provided on the slide, the opening of the U-shaped groove is arranged inward, the bearing positioning block is rotatably installed in the U-shaped groove via a rotating shaft, and the rotation driving part is configured to drive the rotating shaft to rotate;

[0019] The bottom of the slide is slidably connected to the positioning member, and the bottom plane of the U-shaped groove is arranged above the top plane of the positioning member.

[0020] In the above technical solution, the rotary drive unit is installed on the top of the slide, the middle part of the rotating shaft is connected to the bearing positioning block, the bottom of the rotating shaft is rotatably connected to the bottom of the U-shaped groove, the top of the rotating shaft is rotatably connected to the top of the U-shaped groove, and the top of the rotating shaft passes through the U-shaped groove and is arranged above the top of the slide.

[0021] In the above technical solution, the rotation driving part includes a gear, a rack and a third driving cylinder, the gear is mounted on the top outer surface of the rotating shaft, the rack is arranged beside the gear, and the rack is meshed with the gear;

[0022] The third drive cylinder is installed on the top of the slide, and the output shaft of the third drive cylinder is connected to the end of the rack. The third drive cylinder is configured to drive the rack to move and drive the rotating shaft and the bearing positioning block to rotate through the gear.

[0023] In the above technical solution, a sliding limit block is further provided on the top of the slide, and the sliding limit block is arranged beside the gear. A sliding groove facing the gear is provided on the side wall of the sliding limit block, and the rack is slidably arranged in the sliding groove.

[0024] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0025] 1. In the utility model, the bearing is positioned by using the bearing positioning hole of the bearing positioning part. The bearing is driven to rotate by the rotary driving part, so that the material can be received from one side and then rotated to the adjacent side to face the rotor. The driving part drives the bearing positioning part close to the motor rotor and press-fits the bearing onto the motor rotor to realize the press-fitting of the bearing. It can realize a 90-degree flip of the bearing, which is suitable for side loading and also facilitates the bearing positioning part to be separated from the motor rotor for subsequent material receiving.

[0026] 2. In the present invention, the push rod and the bearing positioning part are not fixedly connected. The push rod can be inserted into and detached from the bearing positioning part, which does not affect the rotation of the bearing positioning part and does not affect the push and press-fitting of the bearing by the push rod. The first driving part can drive the bearing positioning part to approach the motor rotor for bearing press-fitting, and can also drive the bearing positioning part to return to its original position for bearing connection, thereby realizing automatic connection and press-fitting of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of the first embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the three-dimensional structure of the first embodiment of the present utility model;

[0029] Figure 3 This is a structural diagram of a first embodiment of the present invention in which a material discharge portion and a bearing loading mechanism are also installed on the table panel;

[0030] Figure 4 This is a schematic diagram of the structure of the first embodiment of the present invention (the second drive unit and the table panel are not shown);

[0031] Figure 5 This is a partial cross-sectional structural diagram of the push rod in the first embodiment of the present utility model;

[0032] Figure 6 This is a structural diagram of the bearing positioning block in the first embodiment of the present invention from the inner end perspective;

[0033] Figure 7 It is a structural schematic diagram of the outer end perspective of the bearing positioning block in Example 1 of the present invention.

[0034] Among them: 11, table panel; 12, motor rotor; 3, unloading part; 5, bearing loading mechanism;

[0035] 61. Positioning member; 62. Slide; 63. Bearing positioning block; 64. Rotary drive unit; 65. Bearing push hole; 66. Bearing positioning hole; 67. First drive unit; 68. Second drive unit; 69. Push rod; 601. Clearance hole; 602. Conical guide hole; 603. First vertical plate; 604. Stop member; 605. U-shaped groove; 606. Rotating shaft; 641. Gear; 642. Rack; 643. Third drive cylinder; 644. Sliding limit block; 645. Slide groove. DETAILED DESCRIPTION

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0037] Example 1: See Figure 1-7 As shown, a motor rotor bearing press-fitting mechanism for a car seat driver includes a bearing positioning portion and a driving portion mounted on a table panel 11. The table panel 11 is provided with a positioning member 61, and the bottom of the bearing positioning portion is slidably mounted on the positioning member 61;

[0038] The bearing positioning portion includes a slide 62, a bearing positioning block 63 rotatably mounted on the slide 62, and a rotation driving portion 64 driving the bearing positioning block 63 to rotate. The slide 62 is slidably disposed on the positioning member 61.

[0039] The middle part of the bearing positioning block 63 is provided with a bearing push hole 65 with two ends passing through. One end of the bearing positioning block 63 is further provided with a bearing positioning hole 66 coaxially arranged with the bearing push hole 65. The diameter of the bearing positioning hole 66 is larger than the diameter of the bearing push hole 65.

[0040] The driving part includes a first driving part 67 that drives the bearing positioning part to move along the positioning member 61 and a second driving part 68 arranged at the outer end of the slide 62. The second driving part 68 is provided with a push rod 69. The second driving part 68 drives the inner end of the push rod 69 to be inserted into the bearing push hole 65 or to be separated from the bearing push hole 65.

[0041] In this embodiment, see Figure 3 As shown, a discharge section 3 is provided in the middle of the tabletop, through which the motor rotor 12 is conveyed from front to back. When press-fitting the motor rotor bearing, a bearing press-fitting mechanism is provided at each end of the discharge section. These two mechanisms simultaneously press-fit the bearings on both ends of the rotor. A bearing loading mechanism 5 is provided on the tabletop behind each bearing positioning section. When the bearing is within the loading mechanism, the bearing axis is positioned perpendicular to the push rod. During operation, the rotary drive unit drives the bearing positioning block to rotate so that the bearing positioning hole is opposite to the bearing feeding mechanism, and then the bearing feeding mechanism feeds the bearing into the bearing positioning hole. The rotary drive unit drives the bearing positioning block to rotate so that the bearing positioning hole is set inward and opposite to the motor rotor on the discharge unit. At this time, the bearing positioning hole and the bearing are facing the end of the motor rotor, and the bearing positioning hole and the axis of the motor rotor are coaxially arranged. Then the first drive unit drives the bearing positioning block and the bearing above it to move inward, so that the bearing and the end of the motor rotor contact, and the second drive unit drives the push rod to move inward so that the inner end of the push rod is inserted into the bearing push hole and contacts the end of the bearing, pushing the bearing to move inward and press-fit on the motor rotor. After the bearing is pressed into place, the second drive unit drives the push rod to move outward to disengage from the bearing push hole, that is, disengage from the bearing positioning block. At this time, the first drive unit will also drive the bearing positioning unit to move outward away from the rotor, return to its original position, and wait for the next bearing press-fitting action.

[0042] See also Figure 1 、 2 As shown in Figure 4, the push rod 69 is arranged parallel to the extension direction of the positioning member 61, the middle part of the push rod 69 is movably connected to the slide 62, the fixed end of the second driving part 68 is installed on the table panel 11, the driving end of the second driving part 68 is arranged opposite to the bearing positioning part, and the driving end of the second driving part 68 is connected to the outer end of the push rod 69.

[0043] In this embodiment, since the outer end of the push rod is connected to the driving end of the second driving part, if the push rod moves outward and completely disengages from the bearing positioning part, the inner end of the push rod is not supported. It is a suspended structure at one end and is easily deformed by weight. When it moves inward subsequently, it may not be smoothly inserted into the bearing push hole. Therefore, the middle part of the push rod is movably connected to the slide, and the push rod can be supported, supported and guided by the slide to ensure that when the push rod moves inward, it can be stably inserted into the bearing push hole to push and press the bearing.

[0044] See also Figure 5 As shown, the inner end of the push rod 69 is provided with a clearance hole 601, and the inner surface of the inner end of the clearance hole 601 is provided with a tapered guide hole 602.

[0045] Since the bearing needs to be installed on the motor rotor, after the bearing is installed, there is a certain distance between the end face of the bearing and the end face of the motor rotor. Therefore, in order to ensure that the bearing is installed in place, a clearance hole is provided, so that during the bearing press-fitting process, the clearance hole is used to make way for the end of the motor rotor, ensuring that the push rod can smoothly push the bearing sleeve onto the motor rotor and make the bearing press-fitted in place. The setting of the tapered guide hole facilitates the processing of the clearance hole and can also ensure that the end of the motor rotor can be smoothly inserted into the clearance hole.

[0046] Among them, the second driving part 68 is a second driving cylinder. When the output shaft of the second driving cylinder is extended, the inner end of the push rod 69 passes through the bearing push hole 65 and the bearing positioning hole 66 and leaks out of the outside of the bearing positioning block 63, thereby pushing the bearing out of the bearing positioning hole and press-fitting it on the motor rotor.

[0047] When the output shaft of the second driving cylinder is in a retracted state, the inner end of the push rod moves outward to disengage from the bearing push hole and is disposed outside the bearing positioning block, thereby not affecting the rotation of the bearing positioning block.

[0048] The second driving cylinder can be an air cylinder or an oil cylinder. If a larger pressing force is required, an oil cylinder can be used. If a smaller pressing force is required, an air cylinder can be used.

[0049] See also Figure 1 、 4 As shown, the first driving part 67 is installed on the table panel 11, the first driving part 67 is a first driving cylinder, the fixed end of the first driving cylinder is connected to the table panel 11, and the driving end of the first driving cylinder is connected to the slide 62; when the output shaft of the first driving cylinder is extended, the slide 62 is pushed away from the second driving part 68; when the output shaft of the first driving cylinder is retracted, the slide 62 is pulled close to the second driving part 68.

[0050] The first drive cylinder adopts an air cylinder or an oil cylinder. In this embodiment, the first drive cylinder adopts an air cylinder. When the cylinder output shaft extends, it drives the slide to move inward. When the slide moves inward, it synchronously drives the bearing positioning block and the bearing above it to move inward close to the motor rotor, and makes the bearing rest against the end of the motor rotor. At the same time, the second drive cylinder output shaft extends, and the bearing is pushed onto the rotor through the push rod.

[0051] Due to the existence of the clearance hole, when the bearing is press-fitted onto the motor rotor, when one side of the motor rotor is inserted into the clearance hole, the end of the clearance hole presses against the motor rotor, so that both sides of the motor rotor are limited by the push rods on both sides, thereby ensuring that the bearings on both sides are press-fitted into place.

[0052] See also Figure 1 、 4 As shown, the first driving portion 67 is mounted on the bottom surface of the table panel 11. A first strip-shaped through groove is provided on the bottom surface of the table panel 11 and communicates with the top surface of the table panel 11. The bottom of the slide 62 is connected to the driving end of the first driving portion 67 via the first vertical plate 603.

[0053] An adjustable stopper 604 is further provided on the bottom surface of the table panel 11 . The stopper 604 is disposed at the inner end of the first vertical plate 603 . The stopper is a bolt, so that the distance between the stopper and the first vertical plate can be adjusted.

[0054] In this embodiment, the first drive cylinder is mounted on the bottom surface of the tabletop, without interfering with the installation of the second drive cylinder or the push rod. The presence of the stopper limits the inward movement of the carriage, ensuring that the carriage stops moving inward after reaching a predetermined position. Furthermore, when the second drive cylinder drives the push rod inward, the bearing cannot move further after the end of the motor rotor is inserted into the end of the clearance hole, ensuring stable and accurate bearing installation. This requires only careful verification of the clearance hole's machining depth.

[0055] See also Figure 1 、 4 As shown, the slide 62 is a U-shaped structure, and a U-shaped groove 605 is provided on the slide 62. The opening of the U-shaped groove 605 is set inward, and the bearing positioning block 63 is rotatably installed in the U-shaped groove 605 via a rotating shaft 606. The rotating drive part 64 is configured to drive the rotating shaft 606 to rotate; the middle part of the rotating shaft is connected to the bearing positioning block, and the circumferential rotation of the rotating shaft and the bearing positioning block can be limited by using a spline.

[0056] The bottom of the slide 62 is slidably connected to the positioning member 61, and the bottom plane of the U-shaped groove 605 is set above the top plane of the positioning member 61, so that when the bearing positioning block rotates, the positioning member will not affect the rotation of the bearing positioning block.

[0057] See also Figure 4 As shown, the rotating drive part 64 is installed on the top of the slide 62, the middle part of the rotating shaft 606 is connected to the bearing positioning block 63, the bottom of the rotating shaft 606 is rotatably connected to the bottom of the U-shaped groove 605, the top of the rotating shaft 606 is rotatably connected to the top of the U-shaped groove 605, and the top of the rotating shaft 606 passes through the U-shaped groove 605 and is arranged above the top of the slide 62.

[0058] The rotation driving unit 64 includes a gear 641, a rack 642, and a third driving cylinder 643. The gear 641 is mounted on the top outer surface of the rotating shaft 606. The rack 642 is disposed beside the gear 641 and meshes with the gear 641.

[0059] The third drive cylinder 643 is installed on the top of the slide 62, and the output shaft of the third drive cylinder 643 is connected to the end of the rack 642. The third drive cylinder 643 is configured to drive the rack 642 to move and drive the rotating shaft 606 and the bearing positioning block 63 to rotate through the gear 641.

[0060] A sliding limit block 644 is also provided on the top of the slide 62. The sliding limit block 644 is arranged next to the gear 641. A sliding groove 645 facing the gear 641 is provided on the side wall of the sliding limit block 644. The rack 642 is slidably set in the sliding groove 645.

[0061] In this embodiment, the third drive cylinder is a pneumatic cylinder. The extension and retraction of the third drive cylinder's output shaft drives the rack. The meshing of the rack and gear drives the bearing positioning block to rotate 90° clockwise and 90° counterclockwise, respectively. After receiving the material from the rear side, the bearing positioning hole is rotated to the inner end, and the bearing is subsequently press-fitted. The provision of a sliding stopper limits the travel distance of the rack, thereby precisely controlling the bearing positioning block's rotation angle, specifically, precisely controlling the bearing positioning block's 90-degree rotation.

Claims

1. A motor rotor bearing press-fitting mechanism for a car seat driver, characterized by: It includes a bearing positioning part and a driving part installed on the table panel, the table panel is provided with a positioning piece, and the bottom of the bearing positioning part is slidably installed on the positioning piece; The bearing positioning portion includes a slide, a bearing positioning block rotatably mounted on the slide, and a rotation driving portion for driving the bearing positioning block to rotate, wherein the slide is slidably mounted on the positioning member; The middle part of the bearing positioning block is provided with a bearing push hole with two ends passing through, and one end of the bearing positioning block is further provided with a bearing positioning hole coaxially arranged with the bearing push hole, and the diameter of the bearing positioning hole is larger than the diameter of the bearing push hole; The driving part includes a first driving part that drives the bearing positioning part to move along the positioning member and a second driving part arranged at the outer end of the slide. The second driving part is provided with a push rod, and the second driving part drives the inner end of the push rod to be inserted into the bearing push hole or to be separated from the bearing push hole.

2. The motor rotor bearing press-fitting mechanism for a car seat driver according to claim 1, characterized in that: The push rod is arranged parallel to the extension direction of the positioning member, the middle portion of the push rod is movably connected to the slide, the fixed end of the second driving part is installed on the table panel, the driving end of the second driving part is arranged opposite to the bearing positioning part, and the driving end of the second driving part is connected to the outer end of the push rod; The inner end of the push rod is provided with a clearance hole, and the inner surface of the inner end of the clearance hole is provided with a tapered guide hole.

3. The motor rotor bearing press-fitting mechanism for a car seat driver according to claim 1, characterized in that: The second driving part is a second driving cylinder. When the output shaft of the second driving cylinder is extended, the inner end of the push rod passes through the bearing push hole and the bearing positioning hole and is exposed to the outside of the bearing positioning block. When the output shaft of the second driving cylinder is in a retracted state, the inner end of the push rod moves outward to escape from the bearing push hole and is disposed outside the bearing positioning block.

4. The motor rotor bearing press-fitting mechanism for a car seat driver according to claim 1, characterized in that: The first driving part is installed on the table panel, and the first driving part is a first driving cylinder. The fixed end of the first driving cylinder is connected to the table panel, and the driving end of the first driving cylinder is connected to the slide. When the output shaft of the first driving cylinder is extended, the slide is pushed away from the second driving part. When the output shaft of the first driving cylinder is retracted, the slide is pulled close to the second driving part.

5. The motor rotor bearing press-fitting mechanism for a car seat driver according to claim 4, characterized in that: The first driving part is mounted on the bottom surface of the table panel. A first strip-shaped through groove is provided on the bottom surface of the table panel and communicates with the top surface of the table panel. The bottom of the slide is connected to the driving end of the first driving part via a first vertical plate. An adjustable stopper is also provided on the bottom surface of the table panel, and the stopper is arranged at the inner end of the first vertical plate.

6. The motor rotor bearing press-fitting mechanism for a car seat driver according to claim 1, characterized in that: The slide is a U-shaped structure, and a U-shaped groove is provided on the slide, the opening of the U-shaped groove is arranged inward, the bearing positioning block is rotatably installed in the U-shaped groove via a rotating shaft, and the rotation driving part is configured to drive the rotating shaft to rotate; The bottom of the slide is slidably connected to the positioning member, and the bottom plane of the U-shaped groove is arranged above the top plane of the positioning member.

7. The motor rotor bearing press-fitting mechanism for a car seat driver according to claim 6, characterized in that: The rotary drive unit is installed on the top of the slide, the middle of the rotating shaft is connected to the bearing positioning block, the bottom of the rotating shaft is rotatably connected to the bottom of the U-shaped groove, the top of the rotating shaft is rotatably connected to the top of the U-shaped groove, and the top of the rotating shaft passes through the U-shaped groove and is arranged above the top of the slide.

8. The motor rotor bearing press-fitting mechanism for a car seat driver according to claim 7, characterized in that: The rotation driving part includes a gear, a rack and a third driving cylinder, wherein the gear is mounted on the top outer surface of the rotating shaft, the rack is arranged beside the gear, and the rack is meshed with the gear; The third drive cylinder is installed on the top of the slide, and the output shaft of the third drive cylinder is connected to the end of the rack. The third drive cylinder is configured to drive the rack to move and drive the rotating shaft and the bearing positioning block to rotate through the gear.

9. The motor rotor bearing press-fitting mechanism for a car seat driver according to claim 8, characterized in that: A sliding limit block is further provided on the top of the slide, and the sliding limit block is arranged beside the gear. A sliding groove facing the gear is provided on the side wall of the sliding limit block, and the rack is slidably arranged in the sliding groove.

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