Gear with self-locking protection structure

Abstract

The invention discloses a gear with a self-locking protection structure, and relates to the technical field of gear transmission. The gear with the self-locking protection structure comprises a gear body, ratchets are fixedly connected to the front face of the gear body, a bearing is fixedly connected to the front face of the gear body, and a rotating frame is fixedly connected to the inner side of the bearing. According to the gear with the self-locking protection structure, when a press-in rod is moved downwards towards the inner side by a gear on the outer side, a movable block impacts a corresponding impact block under the action of centrifugal force of rotation of the gear body, and then the action generated by impact is transmitted to the tooth surface of the gear body in a fixed structure mode; and when the press-in rod is reset, the outer side soft plate rubs the tooth roots, the abraded chippings at the tooth roots are loosened and become easy to break away from the surface of the gear body, and the situation that the chippings participate in abrasion, and consequently the service life of the gear is affected can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of gear transmission, in particular to a gear with a self-locking protection structure. Background Art

[0002] Self-locking gears are mainly used in the electronic parking brake system (EPB) of new energy vehicles to ensure that the vehicle stops steadily on a slope and prevents the vehicle from rolling. They are also used in automatic or semi-automatic transmissions to ensure the smoothness and stability of gear shifting by fixing specific gears. In addition, self-locking gears also play a role in energy recovery systems, helping to lock transmission components to improve energy recovery efficiency. Their simple structure and high reliability make them one of the key components in new energy vehicles. Patent application number CN00809401.2 discloses a gear transmission, which has at least a first gear on a first shaft, and a second gear meshing with the first gear through helical teeth, which is located on a second shaft spaced apart from the first shaft, wherein a third gear for compensating tooth surface clearance is provided in the axial direction toward the second gear, and the third gear is also meshed with the first gear through helical teeth and can slide relative to the second gear in the axial direction. Here, in order to adapt to the change of the distance between the shafts due to temperature, an expansion element is provided between the second and third gears, and the thermal expansion property thereof is selected so that the change of tooth surface clearance caused by the mutual change of the distance between the first and second shafts due to heat can be compensated by the axial sliding of the third gear; Existing gears transmit power by meshing with other gears. However, the gears will wear each other during the meshing transmission process, and the worn metal debris will adhere to the surface of the gear teeth. If these debris continue to be adsorbed, the worn debris will participate in the wear of the gears, thereby aggravating the wear between the gears, which will greatly affect the service life of the gears. Summary of the invention

[0003] In view of the deficiencies of the prior art, the present invention provides a gear with a self-locking protection structure to solve the problems raised in the above background technology.

[0004] To achieve the above purpose, the present invention is implemented through the following technical solutions: a gear with a self-locking protection structure comprises a gear body, a ratchet is fixedly connected to the front of the gear body, a bearing is fixedly connected to the front of the gear body, a rotating frame is fixedly connected to the inner side of the bearing, a locking spring is fixedly connected to the inside of the rotating frame, a pawl is fixedly connected to the side of the locking spring away from the bearing, the pawl is movably connected to the inside of the rotating frame, a pneumatic cooling component is fixedly connected to the outer wall of the gear body, and a knocking and oscillating component is fixedly connected to the inside of the gear body; The pneumatic cooling package includes: A front baffle, the front baffle being arranged on the back of the gear body; A front channel, the front channel being fixedly connected to the back of the front baffle; The first arc plate is fixedly connected to the front side of the front baffle plate, and the front baffle plate is fixedly connected to the back side of the gear body.

[0005] Preferably, a first spiral plate is fixedly connected to the inner wall of the front tube channel, and a back baffle is provided on the front of the gear body. The first arc plate rotates to push the airflow around, and the pushed airflow will be guided to the teeth on the gear body by the front baffle.

[0006] Preferably, the back of the back baffle is fixedly connected to a second arc plate, the second arc plate is fixedly connected to the front of the gear body, the front of the back baffle is fixedly connected to a back tube, the airflow guided by the front baffle will flow to the back baffle, and the back baffle will guide the airflow flowing into the teeth to the axis center.

[0007] Preferably, a second spiral plate is fixedly connected inside the back tube channel, and an external connecting sleeve is fixedly connected to the front side of the rotating frame located inside the back tube channel.

[0008] Preferably, the percussion and vibration component includes a movable groove, which is fixedly connected to the inside of the gear body, and a pressing rod is movably connected to the inside of the movable groove. The outer wall of the pressing rod is located on the outside of the gear body and is fixedly connected to an outer soft plate. The outer soft plate is a soft material with a hardness lower than that of the gear body.

[0009] Preferably, the outer wall of the pressing rod is fixedly connected with a pushing plate, the pushing plate is fixedly connected with a pushing spring at the circular part of the gear body, the end of the pushing spring away from the pushing plate is fixedly connected with a fixing block, and the fixing block is fixedly connected inside the movable groove.

[0010] Preferably, a lifting block is fixedly connected to the inner wall of the movable groove, and the pressing rod is movably connected inside the lifting block.

[0011] Preferably, a movable block is movably connected to the bottom of the pressing rod, the movable block is rotatably connected to the pressing rod and is located at a corresponding position of the lifting block, and an impact block is fixedly connected to the inner wall of the gear body at a position corresponding to the movable block.

[0012] The present invention provides a gear with a self-locking protection structure. It has the following beneficial effects: 1. The gear with a self-locking protection structure, when the pressing rod is moved inward and downward by the outer gear, allows the movable block to collide with the corresponding impact block under the action of the centrifugal force of the rotation of the gear body, and then the effect of the impact is transmitted to the tooth surface of the gear body through the fixed structure, thereby loosening the debris attached to the tooth surface, and when the pressing rod is reset, the outer soft plate rubs the tooth root, so that the worn debris at the tooth root is loosened and becomes easy to detach from the surface of the gear body, which can prevent the debris from participating in the wear and affecting the service life of the gear.

[0013] 2. The gear with a self-locking protection structure is driven to rotate by the gear body. The rotation of the first spiral plate will assist the air intake. The first arc plate will discharge the airflow from all sides, and let the front baffle plate guide the airflow to the back baffle plate. At the same time, the airflow will turn to the moving second arc plate to flow toward the axis, and finally the airflow will be discharged from the external connecting sleeve and the gear body after passing through the ratchet. The flowing gas will cool down multiple surfaces of the gear to avoid the gear's continuous working temperature rising and hardness decreasing, and to prevent the gear from becoming easy to wear, thereby increasing the service life of the gear.

[0014] 3. The gear with a self-locking protection structure hits the corresponding impact block through the movable block, and then the effect of the impact is transmitted to the tooth surface of the gear body through the fixed structure, so that the debris attached to the tooth surface of the gear body becomes loose. When the front baffle guides the airflow to the back baffle, the airflow will flow through the tooth surface of the gear body, and then the loose debris will be blown away from the tooth surface of the gear body, promoting the separation of the debris, thereby improving the service life of the gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main stereoscopic structure of the present invention; Figure 2 It is a schematic diagram of the back three-dimensional structure of the present invention; Figure 3 It is a right-side stereoscopic structural schematic diagram of the present invention; Figure 4 for Figure 1 Schematic diagram of the cross-section structure; Figure 5 This is a schematic diagram of the structure of the external connecting sleeve of the present invention; Figure 6 It is a schematic diagram of the ratchet structure of the present invention; Figure 7 for Figure 6 A schematic diagram of the enlarged structure of the middle part A; Figure 8 This is a schematic diagram of the first arc plate structure of the present invention; Fig. 9 for Figure 8 The enlarged structural diagram of the middle B part; Fig.10 This is a schematic diagram of the cross-sectional structure of the gear body of the present invention; Fig.11 for Fig.10 The enlarged structural diagram of the middle C part; Fig.12 This is a schematic diagram of the press-in rod structure of the present invention.

[0016] In the figure: 1. gear body; 2. ratchet; 3. bearing; 4. rotating frame; 5. locking spring; 6. pneumatic cooling assembly; 601. front baffle; 602. front channel; 603. first spiral plate; 604. first arc plate; 605. back baffle; 606. back channel; 607. second spiral plate; 608. second arc plate; 609. external connecting sleeve; 7. knocking and oscillating assembly; 701. movable groove; 702. pressing rod; 703. outer soft plate; 704. pushing plate; 705. pushing spring; 706. fixed block; 707. movable block; 708. impact block; 709. lifting block; 8. ratchet. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0018] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0019] Example 1: Please refer to Figure 1-8 The present invention provides a technical solution: a gear with a self-locking protection structure, including a gear body 1, a ratchet 2 fixedly connected to the front of the gear body 1, a bearing 3 fixedly connected to the front of the gear body 1, a rotating frame 4 fixedly connected to the inner side of the bearing 3, a locking spring 5 fixedly connected to the inside of the rotating frame 4, a ratchet 8 fixedly connected to the side of the locking spring 5 away from the bearing 3, the ratchet 8 movably connected to the inside of the rotating frame 4, a pneumatic cooling component 6 fixedly connected to the outer wall of the gear body 1, and a knocking and oscillating component 7 fixedly connected to the inside of the gear body 1; The pneumatic cooling assembly 6 comprises: A front baffle 601, which is arranged on the back of the gear body 1; The front channel 602 is fixedly connected to the back of the front baffle 601; The first arc plate 604 is fixedly connected to the front side of the front baffle 601 , and the front baffle 601 is fixedly connected to the back side of the gear body 1 .

[0020] The gear body 1 is fixed to the corresponding shaft for use, and the rotating frame 4 is fixed to the external fixed structure, such as Figure 1 As shown, when the gear rotates counterclockwise, the ratchet 2 will push the pawl 8 upward to compress the locking spring 5. When the gear rotates clockwise, the ratchet 2 will be stuck by the pawl 8, and the rotating frame 4 is fixed to the external fixing device, so that the rotating frame 4 can block the rotation of the ratchet 2 through the pawl 8, thereby preventing the gear body 1 from rotating and achieving the self-locking effect.

[0021] The inner wall of the front tube channel 602 is fixedly connected with a first spiral plate 603 , and a back baffle 605 is provided on the front of the gear body 1 . The first arc plate 604 rotates to push the airflow around, and the pushed airflow will be guided to the teeth on the gear body 1 by the front baffle 601 .

[0022] When the gear rotates, the first arc plate 604 will push the strong airflow to the surroundings, and at the same time, the front tube 602 will also be driven to rotate through the front baffle 601, so that the front tube 602 can rotate with the first spiral plate 603. The rotation of the first spiral plate 603 can assist the air intake, allowing the airflow to pass through the inside of the front tube 602 into the space between the gear body 1 and the front baffle 601, and then be pushed to the surroundings by the first arc plate 604, so that the airflow can flow through the front side wall of the gear body 1. The flowing airflow can cool the gear body 1. At the same time, the front baffle 601 will guide the airflow discharged from the surroundings by the first arc plate 604 to the teeth of the gear body 1 to the back baffle 605. In this process, the airflow can cool the teeth of the gear and flow to the space formed by the back baffle 605 and the gear body 1.

[0023] The back of the back baffle 605 is fixedly connected to the second arc plate 608, and the second arc plate 608 is fixedly connected to the front of the gear body 1. The front of the back baffle 605 is fixedly connected to the back tube 606. The airflow guided by the front baffle 601 will flow to the back baffle 605, and the back baffle 605 will guide the airflow flowing into the teeth to the axis center.

[0024] When the gear body 1 rotates, the second arc plate 608 will also rotate. Due to the shape of the second arc plate 608, the airflow is guided to the inside of the concave surface of the second arc plate 608, which will allow the airflow to flow toward the center of the gear axis, and the airflow guided into by the front baffle 601 will be more easily directed to the air flow between the back baffle 605 and the gear body 1, and the flow will cool the front of the gear body 1.

[0025] A second spiral plate 607 is fixedly connected inside the back tube channel 606, and an external connecting sleeve 609 is fixedly connected to the front of the rotating frame 4 located inside the back tube channel 606. The external connecting sleeve 609 is fixedly connected to an external fixed structure, so that the rotating frame 4 is connected to the external fixed structure through the external connecting sleeve 609.

[0026] The rotation of the back baffle 605 will also cause the back tube 606 to rotate with the second spiral plate 607 inside. The rotation of the second spiral plate 607 will push the gas at the axis to the outside through the back tube 606 and the second spiral plate 607, and then be discharged from the outer connecting sleeve 609 and the gear body 1. At the same time, the discharged airflow will pass near the ratchet 2 to cool the ratchet 2 and the pawl 8.

[0027] Example 2: Please refer to Figure 1-12 Based on the first embodiment, the present invention provides a technical solution: The percussion vibration component 7 includes a movable groove 701, which is fixedly connected to the inside of the gear body 1. A pressing rod 702 is movably connected inside the movable groove 701. The outer wall of the pressing rod 702 is located on the outside of the gear body 1 and is fixedly connected to an outer soft plate 703. The outer soft plate 703 is a soft material with a hardness lower than that of the gear body 1.

[0028] During the operation of the gear body 1 , the outer teeth will mesh with the teeth of the gear body 1 , thereby pushing the pressing rod 702 between the teeth toward the inside of the gear body 1 , and the gear body 1 will move inward with the two outer soft plates 703 .

[0029] The outer wall of the pressing rod 702 is fixedly connected with a pushing plate 704, and the pushing plate 704 is fixedly connected with a pushing spring 705 at the circular part facing the gear body 1. The end of the pushing spring 705 away from the pushing plate 704 is fixedly connected with a fixing block 706, and the fixing block 706 is fixedly connected inside the movable groove 701.

[0030] When the pressing rod 702 moves downward, the pushing plate 704 will move with the pressing rod 702, and then the pushing plate 704 will move downward, and the pushing spring 705 will be compressed. When the pressing rod 702 is no longer pushed, the pushing spring 705 will pass through the pushing plate 704 and cooperate with the centrifugal force to restore the pressing rod 702 to its original position. At the same time, the outer soft plate 703 will rub the tooth root as the pressing rod 702 moves up and down, loosening the worn debris at the tooth root and making it easier to detach from the surface of the gear body 1.

[0031] A lifting block 709 is fixedly connected to the inner wall of the movable groove 701 , and the pressing rod 702 is movably connected inside the lifting block 709 . When the movable groove 701 moves up and down, it will follow the inside of the lifting block 709 .

[0032] The bottom of the pressing rod 702 is movably connected with a movable block 707 , and the movable block 707 is rotatably connected to the pressing rod 702 and is located at a position corresponding to the pulling block 709 . The inner wall of the gear body 1 is fixedly connected with a collision block 708 at a position corresponding to the movable block 707 .

[0033] When the pressing rod 702 moves downward, the connection between the movable block 707 and the pressing rod 702 will be separated from the lifting block 709, allowing the impact block 708 to rotate around the connection between it and the pressing rod 702, and then the movable block 707 will collide with the corresponding impact block 708 under the action of the centrifugal force of the rotation of the gear body 1, and then the effect of the collision will be transmitted to the tooth surface of the gear body 1 through the fixed structure, thereby loosening the debris attached to the tooth surface, making it easy to separate from the surface of the gear body 1.

[0034] When the gear body 1 is out of mesh, the push spring 705 will push the push rod 702 to reset, so that the push rod 702 will drag the movable block 707 to move during the movement, and the movable block 707 will be pushed back to its original position under the action of the lifting block 709.

[0035] The movable block 707 collides with the corresponding impact block 708, and the effect of the impact is transmitted to the tooth surface of the gear body 1 through the fixed structure, so that the debris attached to the tooth surface of the gear body 1 becomes loose. When the front baffle 601 guides the airflow to the back baffle 605, the airflow will flow through the tooth surface of the gear body 1, and then the loose debris will be blown away from the tooth surface of the gear body 1, thereby promoting the separation of the debris.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A gear having a self-locking protection structure, comprising a gear body (1), characterized in that: The front face of the gear body (1) is fixedly connected to a ratchet (2), the front face of the gear body (1) is fixedly connected to a bearing (3), the inner side of the bearing (3) is fixedly connected to a rotating frame (4), the interior of the rotating frame (4) is fixedly connected to a locking spring (5), the side of the locking spring (5) away from the bearing (3) is fixedly connected to a pawl (8), the pawl (8) is movably connected to the interior of the rotating frame (4), the outer wall of the gear body (1) is fixedly connected to a pneumatic cooling component (6), and the interior of the gear body (1) is fixedly connected to a knocking and oscillating component (7); The pneumatic cooling assembly (6) comprises: A front baffle (601), wherein the front baffle (601) is arranged on the back side of the gear body (1); A front channel (602), wherein the front channel (602) is fixedly connected to the back of the front baffle (601); A first arc plate (604), wherein the first arc plate (604) is fixedly connected to the front side of the front baffle plate (601), and the front baffle plate (601) is fixedly connected to the back side of the gear body (1).

2. The gear with a self-locking protection structure according to claim 1, characterized in that: The inner wall of the front tube channel (602) is fixedly connected to a first spiral plate (603), the front of the gear body (1) is provided with a back baffle (605), and the first arc plate (604) rotates to push the airflow in all directions, and the pushed airflow is guided by the front baffle (601) to the teeth on the gear body (1).

3. The gear with a self-locking protection structure according to claim 2, characterized in that: The back of the back baffle (605) is fixedly connected to a second arc plate (608), and the second arc plate (608) is fixedly connected to the front of the gear body (1). The front of the back baffle (605) is fixedly connected to a back tube (606). The airflow guided by the front baffle (601) will flow to the back baffle (605), and the back baffle (605) will guide the airflow flowing into the teeth toward the axis.

4. The gear with a self-locking protection structure according to claim 3, characterized in that: A second spiral plate (607) is fixedly connected inside the back tube channel (606), and an external connecting shaft sleeve (609) is fixedly connected to the front side of the rotating frame (4) located inside the back tube channel (606).

5. The gear with a self-locking protection structure according to claim 1, characterized in that: The knocking and oscillating component (7) comprises a movable groove (701), wherein the movable groove (701) is fixedly connected to the inside of the gear body (1), a pressing rod (702) is movably connected to the inside of the movable groove (701), and an outer soft plate (703) is fixedly connected to the outer side of the gear body (1) on the outer wall of the pressing rod (702), wherein the outer soft plate (703) is a soft material having a lower hardness than the gear body (1).

6. The gear with a self-locking protection structure according to claim 5, characterized in that: The outer wall of the push rod (702) is fixedly connected to a push plate (704); the push plate (704) is fixedly connected to a push spring (705) at a circular portion facing the gear body (1); one end of the push spring (705) away from the push plate (704) is fixedly connected to a fixed block (706); and the fixed block (706) is fixedly connected inside the movable groove (701).

7. The gear with a self-locking protection structure according to claim 5, characterized in that: A lifting block (709) is fixedly connected to the inner wall of the movable groove (701), and the pressing rod (702) is movably connected inside the lifting block (709).

8. The gear with a self-locking protection structure according to claim 7, characterized in that: The bottom of the pressing rod (702) is movably connected to a movable block (707), the movable block (707) and the pressing rod (702) are rotatably connected to the position of the lifting block (709) and correspond to each other, and the inner wall of the gear body (1) is fixedly connected to a collision block (708) at a position corresponding to the movable block (707).

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