Synchronizer gear hub facilitating replacement of gear teeth

Abstract

The synchronizer gear hub comprises a base plate and an inner ring, and the inner ring is arranged on the inner wall of the base plate in a penetrating mode and located in the middle of the base plate. The connecting base, the connecting block and the outer gear teeth are of an integrated structure, the connecting base is inserted into the connecting groove through the connecting block to keep being connected with the base plate, the connecting block is prevented from being disengaged in the radial direction through cooperation of the anti-disengagement block and the anti-disengagement groove, and the connecting block is axially fixed through the front baffle and the rear baffle which are fixed to the front side and the rear side of the base plate through the locking screws. And when the outer gear teeth need to be replaced, the front baffle plate and the rear baffle plate can be separated from the base plate by loosening the locking screw and knocking down the positioning pin, and then the connecting block slides out along the axial direction of the base plate, so that the replacement is very convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile gearboxes, in particular to a synchronizer gear hub which is convenient for replacing gear teeth. Background Art

[0002] A gear refers to a mechanical element on the wheel rim that continuously meshes with gears to transmit motion and power. After long-term use, a traditional gear hub will cause fatigue of the gear hub, which is prone to gear tooth breakage, and the entire gear needs to be replaced, which wastes resources. To this end, there is a public technology on the market that proposes an automotive synchronizer gear hub, including a gear hub, external gear teeth, internal gear teeth, a slide bar and a fixed rod. The gear hub is provided with a slide groove inside, and the slide groove is circularly distributed inside the gear hub. Slot holes are provided on the outside of the slide groove. The gear hub is provided with external gear teeth and a fixed rod on the outside. The slide groove is provided with a slide bar inside, and the slide bar is connected to the gear hub through the slide groove. The external gear teeth are fixedly connected to the slide bar by welding. The fixed rod is detachably connected to the outer side of the gear hub through a positioning seat. The inner side of the gear hub is provided with internal gear teeth, and the inner gear teeth are fixedly connected to the inner side of the gear hub by welding. The automobile synchronizer gear hub has a sliding groove inside the gear hub, and the outer gear teeth are connected with the slot holes outside the sliding groove through the sliding bar, and the sliding bar is fixed by a fixing rod, so that the outer gear and the gear hub are connected as a whole. When the gear hub works for a long time and the gear teeth are broken, the gear teeth can be easily replaced, thereby avoiding waste of resources.

[0003] However, in the above-mentioned public technology, the outer gear and the slide bar are fixed by welding, which has a great risk of breakage, and the slide bar is fixed by a fixing rod, which is not stable enough. Therefore, it is necessary to further improve it. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and provides a synchronizer gear hub which is convenient for replacing gear teeth.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a synchronizer gear hub is convenient for replacing gear teeth, including a base plate and an inner ring, the inner ring is arranged through the inner wall of the base plate and is located in the center of the base plate, the front and rear ends of the inner ring extend toward the front and rear sides of the base plate respectively, the circumferential outer wall of the base plate is slidably connected with three groups of connecting blocks, the end of the connecting block away from the axis of the base plate is fixedly connected with a connecting seat, an anti-slip structure for preventing the connecting block from radially slipping out is arranged between the connecting block and the base plate, the circumferential outer wall of the inner ring and the front and rear sides of the base plate are respectively provided with a front baffle plate and a rear baffle plate, and a positioning structure for positioning is arranged between the front baffle plate, the rear baffle plate and the base plate.

[0006] As a further description of the above technical solution:

[0007] The front baffle, the connecting block and the rear baffle are fixedly connected by locking screws.

[0008] As a further description of the above technical solution:

[0009] The anti-slip structure includes three groups of connecting grooves, which are all arranged on the circumferential outer wall of the substrate and are equally distributed in a circle with the axis of the substrate as the center. The connecting grooves are connected to the front and rear side walls of the substrate. The outer dimensions of the connecting block are matched with the inner cavity dimensions of the connecting groove. The connecting block is slidably connected to the inner side wall of the connecting groove. Anti-slip blocks are arranged on the left and right side walls of the end of the connecting block away from the connecting seat, and the inner side wall of the connecting groove is provided with an anti-slip groove matched with the anti-slip block.

[0010] As a further description of the above technical solution:

[0011] The positioning structure includes three groups of positioning pins. The front baffle, base plate and inner wall of the rear baffle are jointly provided with three groups of pin holes that penetrate from front to back. The three groups of positioning pins are respectively fixedly connected to the inner side walls of the three groups of pin holes.

[0012] As a further description of the above technical solution:

[0013] The inner side wall of the inner ring is provided with internal spline teeth, and the side of the connecting seat away from the connecting block is provided with external gear teeth. The connecting seat, the connecting block and the external gear teeth are an integrated structure.

[0014] As a further description of the above technical solution:

[0015] The circumferential outer wall of the base plate is provided with three groups of slide grooves, and the three groups of slide grooves are respectively arranged between two adjacent groups of the three groups of connecting seats.

[0016] The utility model has the following beneficial effects:

[0017] Compared with the prior art, the synchronizer gear hub is convenient for replacing the gear teeth. The connecting seat, connecting block and external gear teeth are an integrated structure. The connecting seat is inserted into the connecting groove by the connecting block to keep it connected to the base plate, and the anti-slip block cooperates with the anti-slip groove to prevent the connecting block from radially slipping out. The connecting block is axially fixed by the front baffle plate and the rear baffle plate on the front and rear sides of the base plate fixed by locking screws. The connection method is very stable. When the external gear teeth need to be replaced, the locking screws are loosened and the positioning pins are knocked down to separate the front and rear baffle plates from the base plate, and then the connecting block can be slid out axially along the base plate for replacement, which is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the synchronizer gear hub for convenient replacement of gear teeth proposed by the utility model;

[0019] Figure 2A schematic diagram of the connection structure between the base plate and the connection block after the front baffle of the synchronizer gear hub is removed to facilitate the replacement of gear teeth proposed by the utility model;

[0020] Figure 3 The utility model provides a schematic diagram of the base plate and inner ring connection structure of the synchronizer gear hub for convenient replacement of gear teeth.

[0021] Legend:

[0022] 1. Base plate; 2. Front baffle; 3. Rear baffle; 4. Inner ring; 5. Internal spline teeth; 6. Slide groove; 7. Connecting seat; 8. External gear teeth; 9. Pin hole; 10. Positioning pin; 11. Locking screw; 12. Connecting block; 13. Anti-slip block; 14. Connecting groove; 15. Anti-slip groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figures 1 to 3 The utility model provides a synchronizer gear hub that is convenient for replacing gear teeth: it includes a base plate 1 and an inner ring 4, the inner ring 4 is arranged through the inner wall of the base plate 1 and is located in the center of the base plate 1, the front and rear ends of the inner ring 4 extend toward the front and rear sides of the base plate 1 respectively, the inner side wall of the inner ring 4 is provided with internal spline teeth 5, and the gear hub is meshed with the wheel shaft through the internal spline teeth 5 to transmit torque;

[0025] like Figure 1 , Figure 2 as well as Figure 3As shown, in order to facilitate the replacement of the outer gear teeth 8 and prevent the connection block 12 from radially falling out, three groups of connection blocks 12 are slidably connected to the outer wall of the circumference of the substrate 1, and the end of the connection block 12 away from the axis of the substrate 1 is fixedly connected to the connection seat 7, and the side of the connection seat 7 away from the connection block 12 is provided with the outer gear teeth 8, and the connection seat 7, the connection block 12 and the outer gear teeth 8 are an integral structure, and an anti-slip structure for preventing the connection block 12 from radially falling out is provided between the connection block 12 and the substrate 1, and the anti-slip structure includes three groups of connection grooves 14, and the three groups of connection grooves 14 are all arranged on the outer wall of the circumference of the substrate 1 and are all circular with the axis of the substrate 1 as the center. The connecting groove 14 is evenly distributed around the base plate 1, and the connecting groove 14 is connected with the front and rear side walls of the base plate 1. The outer dimensions of the connecting block 12 are adapted to the inner cavity dimensions of the connecting groove 14. The connecting block 12 is slidably connected to the inner side wall of the connecting groove 14. The left and right side walls of the connecting block 12 away from the connecting seat 7 are provided with anti-slip blocks 13. The inner side wall of the connecting groove 14 is provided with an anti-slip groove 15 adapted to the anti-slip block 13. The connecting block 12 is axially inserted into the connecting groove 14, and the anti-slip block 13 and the anti-slip groove 15 prevent the connecting block 12 from being radially slipped out. The integrated structure of the connecting seat 7, the connecting block 12 and the outer gear 8 can effectively improve the structural strength.

[0026] like Figure 1 , Figure 2 as well as Figure 3 As shown, in order to axially position the connection block 12, a front baffle plate 2 and a rear baffle plate 3 are respectively provided on the outer wall of the circumference of the inner ring 4 and located at the front and rear sides of the base plate 1. The front baffle plate 2, the connection block 12 and the rear baffle plate 3 are fixedly connected by locking screws 11. The front baffle plate 2 and the rear baffle plate 3 respectively abut against the front and rear sides of the connection block 12, so that the connection block 12 can be prevented from axially moving, thereby playing a better fixing role.

[0027] like Figure 1 , Figure 2 as well as Figure 3 As shown, in order to maintain the relative positions during installation, a positioning structure for positioning is arranged between the front baffle 2, the rear baffle 3 and the base plate 1, and the positioning structure includes three groups of positioning pins 10. The inner walls of the front baffle 2, the base plate 1 and the rear baffle 3 are jointly provided with three groups of pin holes 9 which are through-through in the front and back directions. The three groups of positioning pins 10 are respectively fixedly connected to the inner walls of the three groups of pin holes 9. The circumferential outer wall of the base plate 1 is provided with three groups of slide grooves 6. The three groups of slide grooves 6 are respectively arranged between two adjacent groups of the three groups of connecting seats 7. The relative positions of the front baffle 2, the base plate 1 and the rear baffle 3 during installation are maintained by inserting the positioning pins 10 into the pin holes 9.

[0028] Working principle: when the outer gear teeth 8 need to be replaced, loosen the locking screws 11 and knock down the positioning pins 10 to separate the front baffle 2 and the rear baffle 3 from the base plate 1, and then slide the connecting block 12 axially along the base plate 1 for replacement; the inner side wall of the inner ring 4 is provided with internal spline teeth 5, and the gear hub is engaged with the wheel axle through the internal spline teeth 5 to transmit torque, and the connecting block 12 is axially inserted into the connecting groove 14, and the anti-slip block 13 and the anti-slip groove 15 prevent the connecting block 12 from radially slipping out. The integrated structure of the connecting seat 7, the connecting block 12 and the outer gear teeth 8 can effectively improve the structural strength. The front baffle 2 and the rear baffle 3 respectively press against the front and rear sides of the connecting block 12 to prevent the connecting block 12 from axial movement, thereby playing a better fixing role. The positioning pin 10 is inserted into the pin hole 9 to maintain the relative positions of the front baffle 2, the base plate 1 and the rear baffle 3 during installation.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. It is convenient to replace the gear teeth of the synchronizer gear hub, which is characterized by: The invention comprises a base plate (1) and an inner ring (4), wherein the inner ring (4) is arranged to penetrate the inner wall of the base plate (1) and is located at the center of the base plate (1), the front and rear ends of the inner ring (4) respectively extend toward the front and rear sides of the base plate (1), the circumferential outer wall of the base plate (1) is slidably connected with three groups of connecting blocks (12), one end of the connecting block (12) away from the axis of the base plate (1) is fixedly connected with a connecting seat (7), an anti-slip structure for preventing the connecting block (12) from radially slipping out is arranged between the connecting block (12) and the base plate (1), a front baffle plate (2) and a rear baffle plate (3) are respectively arranged on the circumferential outer wall of the inner ring (4) and located at the front and rear sides of the base plate (1), and a positioning structure for positioning is arranged between the front baffle plate (2), the rear baffle plate (3) and the base plate (1); The anti-slip structure comprises three groups of connection grooves (14), the three groups of connection grooves (14) are all arranged on the circumferential outer wall of the base plate (1) and are all equally distributed in a circle with the axis of the base plate (1) as the center, the connection grooves (14) are connected with the front and rear side walls of the base plate (1), the outer dimensions of the connection block (12) are matched with the inner cavity dimensions of the connection groove (14), the connection block (12) is slidably connected with the inner side wall of the connection groove (14), the left and right side walls of the end of the connection block (12) away from the connection seat (7) are both provided with anti-slip blocks (13), and the inner side wall of the connection groove (14) is provided with anti-slip grooves (15) matched with the anti-slip blocks (13); The positioning structure comprises three groups of positioning pins (10); the inner walls of the front baffle plate (2), the base plate (1) and the rear baffle plate (3) are jointly provided with three groups of pin holes (9) which are through-through in the front and back directions; the three groups of positioning pins (10) are respectively fixedly connected to the inner side walls of the three groups of pin holes (9).

2. The synchronizer gear hub for convenient replacement of gear teeth according to claim 1, characterized in that: The front baffle plate (2), the connecting block (12) and the rear baffle plate (3) are fixedly connected by means of locking screws (11).

3. The synchronizer gear hub for convenient replacement of gear teeth according to claim 1, characterized in that: The inner side wall of the inner ring (4) is provided with internal spline teeth (5), and the side of the connecting seat (7) away from the connecting block (12) is provided with external gear teeth (8), and the connecting seat (7), the connecting block (12) and the external gear teeth (8) are an integrated structure.

4. The synchronizer gear hub for convenient replacement of gear teeth according to claim 1, characterized in that: The circumferential outer wall of the base plate (1) is provided with three groups of slide grooves (6), and the three groups of slide grooves (6) are respectively arranged between two adjacent groups of the three groups of connection seats (7).

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