Reduction gear component applied to reduction mechanism
By installing a buffer rubber ring on the internal gear ring bracket, the problems of brush wear and one-way slippage in the starter reduction system are solved, thereby achieving increased reliability and lifespan of the starter.
Patent Information
- Application Number
- CN202520345692.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-02-28
AI Technical Summary
In existing starter reduction systems, the internal gear ring and gear ring seat are integral structures, lacking a buffer structure, which leads to severe brush wear and one-way slippage, affecting the service life and reliability of the starter.
A buffer rubber ring is installed on the internal gear ring bracket, and a buffer rubber ring is also fitted around the outer circumference of the internal gear. Through the compression effect of the buffer rubber ring, the peak current is avoided by delay, the brush heating is reduced, and the stress on the unidirectional circuit is shared. The internal gear and aluminum die-cast bracket are made of powder metallurgy to improve production efficiency and reliability.
It effectively reduces brush wear, extends starter life, reduces the risk of one-way slippage, and improves starter reliability and service life.
Smart Images
Figure CN223923736U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of speed reducer technology, and specifically to a speed reduction gear component used in a speed reduction mechanism. Background Technology
[0002] The starter motor reduction system is an important component of the automotive starter motor (starter). Its function is to reduce the output speed of the motor and increase the output torque through a gear reduction mechanism, thereby meeting the power requirements required when the engine starts.
[0003] Existing starter reduction systems include planetary gears, internal gear rings, and gear ring seats. The internal gear ring and gear ring seats are generally a single part, forming an integral internal gear without a buffer structure. As a result, when the starter is subjected to a peak current during operation, the brushes and armature commutator heat up due to the large current, causing accelerated brush wear and shortening the starter's service life. Furthermore, the one-way valve is fully stressed during starter operation, which can easily cause the gears to slip, leading to starter failure. Utility Model Content
[0004] To address the technical problems existing in the background art, this utility model proposes a reduction gear component applied to a reduction mechanism.
[0005] The technical solution adopted by this utility model to solve its technical problem is as follows:
[0006] A reduction gear component for a reduction mechanism includes an internal gear ring bracket and an internal gear mounted on the internal gear ring bracket. The internal gear is fitted with an elastically arranged buffer rubber ring on its outer periphery. A snap-fit groove is formed on the internal gear ring bracket. The buffer rubber ring is partially inserted into the snap-fit groove and abuts against the groove wall.
[0007] Preferably, the buffer rubber ring includes a plurality of rotating abutting protrusions, which are placed in the insertion groove. The internal gear has an insertion protrusion, and the rotating abutting protrusion has an insertion groove for the insertion protrusion to be inserted. With the above improvement, when the insertion protrusion is inserted into the insertion groove of the rotating abutting protrusion, the internal gear ring rotates, which drives the rotating abutting protrusion to move and squeeze the insertion groove, thereby playing a buffering role.
[0008] Preferably, the buffer rubber ring further includes an abutment ring, which is formed on the top of the rotating abutment protrusion and fits against the upper end face of the internal gear frame. With the above improvement, the abutment ring is set on the top of the internal gear frame. When the internal gear ring bracket is connected to the motor, the motor will press the abutment ring, which will have a shock absorption effect.
[0009] Preferably, the two sides of the insertion groove respectively form a first compression area and a second compression area. The width of the first compression area is greater than the width of the second compression area, and the first compression area is located on the side of the internal gear rotation direction. Through the above improvement, the first compression area is located on the side of the rotation direction, which increases the amount of compressibility of the rotating abutment protrusion to ensure the buffering effect.
[0010] Preferably, a shrinkage groove is formed on the first extrusion area. Through the above improvements, a shrinkage groove is formed on the first extrusion area, making it easier to deform and further improving the buffering effect.
[0011] Preferably, the rotating abutment protrusion extends out of the locking groove. Through the above improvements, the rotating abutment protrusion is prevented from disengaging from the locking groove, ensuring the reliability of the internal gear installation.
[0012] Preferably, the internal gear is made of powder metallurgy, the buffer rubber ring is made of vulcanized rubber, and the internal gear ring bracket is made of die-cast aluminum. Through the above improvements, the production efficiency of the internal gear is improved by using powder metallurgy, and metal is saved. The buffer rubber ring made of vulcanized rubber is more durable and its service life is improved. The internal gear ring bracket made of die-cast aluminum not only ensures the molding quality, but also greatly improves the production efficiency and material utilization rate.
[0013] Preferably, the outer periphery of the internal gear is formed with multiple insertion protrusions, and the insertion protrusions are arranged in a cross-shaped arrangement. Through the above improvements, the buffering effect is further enhanced.
[0014] Preferably, the rotating abutment protrusion has limiting protrusions on both sides, and the locking groove has a limiting groove, with the limiting protrusions inserted into the limiting groove. With the above improvements, when the rotating abutment protrusion is placed into the locking groove, the limiting protrusions on both sides of the rotating abutment protrusion will be inserted into the limiting groove of the limiting protrusion, thereby preventing the rotating abutment protrusion from falling out of the locking groove.
[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects:
[0016] By setting a buffer rubber ring on the outer circumference of the internal gear, and forming a snap-fit groove on the internal gear ring bracket, the buffer rubber ring is partially inserted into the snap-fit groove and abuts against the groove wall. At the moment of starter operation, the time of peak current generation is effectively avoided by the delay of the compression of the buffer rubber ring (about 1 / 3 of the peak current can be avoided), which reduces the heat generated by the brush due to the large current, reduces the brush wear, and extends the service life of the starter. At the moment of starter operation, the compression of the buffer rubber ring also distributes some of the force of the engine flywheel on the one-way valve, reduces the pressure on the one-way valve, and reduces the risk of starter failure due to slippage of the one-way valve teeth. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model;
[0018] Figure 2 This is an exploded view of the overall structure of Embodiment 1 of this utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the buffer rubber ring in Embodiment 1 of this utility model;
[0020] Figure 4 This is a schematic diagram of the internal gear structure in Embodiment 1 of this utility model;
[0021] Figure 5 This is a schematic diagram of the internal gear ring bracket in Embodiment 2 of this utility model;
[0022] Figure 6 For the present utility model Figure 5 A magnified view of a section at point A in the middle;
[0023] Figure 7 This is a schematic diagram of the internal gear ring bracket in Embodiment 2 of this utility model;
[0024] Figure 8 This is a schematic diagram of the structure of the buffer rubber and the spare elastic block in Embodiment 2 of this utility model;
[0025] Figure 9 This is a schematic diagram of the structure of the internal gear ring bracket, internal gear, and spare elastic block in Embodiment 2 of this utility model.
[0026] Figure 10 This is a schematic diagram of the structure of the spare elastic block in Embodiment 2 of this utility model;
[0027] In the diagram: 1. Internal gear ring bracket; 2. Internal gear; 3. Buffer rubber ring; 1.1. Snap-fit groove; 1.2. Rotating abutment protrusion; 1.3. Insertion protrusion; 1.4. Insertion groove; 1.5. Abutment ring; 1.6. First compression area; 1.7. Second compression area; 2.1. Shrinkage groove; 3.1. Limiting protrusion; 3.2. Limiting groove; 3.3. Spare elastic block; 3.4. Mounting protrusion; Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] It should be understood that although the terms upper, middle, lower, top, one end, etc., appear in this document to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish the elements from each other for ease of understanding, and are not used to define any directional or sequential restrictions.
[0030] Example 1
[0031] like Figure 1-4 As shown, a reduction gear component applied to a reduction mechanism includes an internal gear ring support 1 and an internal gear 2 mounted on the internal gear ring support 1. The internal gear 2 is fitted with an elastically arranged buffer rubber ring 3. The internal gear ring support 1 has a locking groove 1.1. The buffer rubber ring 3 is partially inserted into the locking groove 1.1 and abuts against the groove wall of the locking groove 1.1. When the internal gear 2 rotates, the internal gear 2 will drive the buffer rubber ring 3 to squeeze the locking groove 1.1, thereby playing a buffering role.
[0032] Specifically, at the moment the starter operates, the delay in compressing the buffer rubber ring 3 effectively avoids the time when the peak current is generated (about 1 / 3 of the peak current can be avoided), reduces the heat generated by the brush due to the large current, reduces the accelerated wear of the brush, and extends the service life of the starter.
[0033] At the same time, when the starter motor is working, the compression of the buffer rubber ring 3 distributes part of the force of the engine flywheel on the one-way valve, reducing the pressure on the one-way valve and reducing the risk of starter motor failure caused by slippage of the one-way valve teeth.
[0034] The specific structure of the engine flywheel and the one-way valve mentioned above is well-known technology, so it will not be described in detail.
[0035] like Figure 1-4 As shown, as a further explanation of the cooperation between the internal gear ring bracket 1, the internal gear 2, and the buffer rubber ring 3 in this embodiment, the buffer rubber ring 3 includes a plurality of rotating abutting protrusions 1.2, which are inserted into the insertion grooves 1.4. The internal gear 2 has an insertion protrusion 1.3, and the rotating abutting protrusion 1.2 has an insertion groove 1.4 for the insertion protrusion 1.3 to be inserted.
[0036] By inserting the insertion protrusion 1.3 into the insertion groove 1.4 of the rotating abutment protrusion 1.2, when the internal gear ring rotates, it will drive the rotating abutment protrusion 1.2 to move and squeeze the locking groove 1.1, thereby playing a buffering role.
[0037] The inner gear 2 has multiple insertion protrusions 1.3 on its outer periphery, and the insertion protrusions 1.3 are arranged in a cross-shaped manner to further ensure the reliability of the installation of the inner gear 2.
[0038] Furthermore, the buffer rubber ring 3 also includes an abutment ring 1.5, which is formed on the top of the rotating abutment protrusion 1.2 and fits against the upper end face of the internal gear 2 frame. During the assembly process, the internal gear 2 frame will be directly fixed to the starter housing, so that the two ends of the abutment ring 1.5 are abutted by the internal gear 2 frame and the starter, thereby absorbing the vibration generated by the starter during operation and achieving a shock absorption effect.
[0039] The two sides of the insertion groove 1.4 form a first compression area 1.6 and a second compression area 1.7 respectively. The width of the first compression area 1.6 is greater than the width of the second compression area 1.7. The first compression area 1.6 is located on the side of the rotation direction of the internal gear 2, which increases the amount of compressibility of the rotating abutment protrusion 1.2 to ensure the buffering effect.
[0040] The first squeezing area 1.6 and the second squeezing area 1.7 respectively buffer the starter when it rotates counterclockwise or clockwise to accommodate different usage scenarios.
[0041] Preferably, the first extrusion area 1.6 is provided with a shrinkage groove 2.1. The shrinkage groove 2.1 on the first extrusion area 1.6 makes it easier to deform and further improves the buffering effect.
[0042] Preferably, the rotating abutment protrusion 1.2 extends out of the locking groove 1.1 to prevent the rotating abutment protrusion 1.2 from disengaging from the locking groove 1.1, thus ensuring the reliability of the internal gear 2 installation.
[0043] like Figure 1-4 As shown, further explanation of the materials of the internal gear ring bracket 1, internal gear 2, and buffer rubber ring 3 in this embodiment: the internal gear 2 is made of powder metallurgy, which improves the production efficiency of the internal gear 2 and saves metal. The buffer rubber ring 3 is made of vulcanized rubber, which is more durable and improves the service life of the buffer rubber ring 3. The internal gear ring bracket 1 is made of aluminum die casting, which not only ensures the molding quality, but also greatly improves the production efficiency and material utilization rate. Compared with the traditional integral internal gear 2 using cold extrusion process, which is difficult to process, difficult to produce, and has a high cost, the split setting simplifies the production process, makes production easier, has a relatively low cost, and ensures reliability.
[0044] Example 2
[0045] like Figure 5-10As shown, the difference between this embodiment and Embodiment 1 is that the two sides of the rotating abutment protrusion 1.2 form limiting protrusions 3.1, and the locking groove 1.1 forms a limiting groove 3.2. The limiting protrusions 3.1 are inserted into the limiting groove 3.2. When the rotating abutment protrusion 1.2 is placed into the locking groove 1.1, the limiting protrusions 3.1 on both sides of the rotating abutment protrusion 1.2 will be inserted into the limiting groove 3.2 of the limiting protrusion 3.1, thereby preventing the rotating abutment protrusion 1.2 from disengaging from the locking groove 1.1.
[0046] In addition, the internal gear ring bracket 1 is also equipped with a removable spare elastic block 3.3. The spare elastic block 3.3 also has a mounting protrusion 3.4 that can be inserted into the limiting groove 3.2. If the internal gear ring bracket 1 is damaged, the spare elastic block 3.3 can be removed and inserted into the limiting groove 3.2, so that the insertion protrusion 1.3 abuts against the spare elastic block to achieve the same buffering effect in order to deal with emergency situations.
[0047] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.
Claims
1. A reduction gear component applied to a reduction mechanism, characterized in that, It includes an internal gear ring bracket (1) and an internal gear (2) mounted on the internal gear ring bracket (1). The internal gear (2) is fitted with an elastically arranged buffer rubber ring (3) on its outer periphery. A snap-fit groove (1.1) is formed on the internal gear ring bracket (1). The buffer rubber ring (3) is partially placed in the snap-fit groove (1.1) and abuts against the groove wall of the snap-fit groove (1.1).
2. A reduction gear component applied to a reduction mechanism according to claim 1, characterized in that, The buffer rubber ring (3) includes several rotating abutting protrusions (1.2), which are inserted into the insertion groove (1.4). The internal gear (2) has an insertion protrusion (1.3), and the rotating abutting protrusion (1.2) has an insertion groove (1.4) for the insertion protrusion (1.3) to be inserted.
3. A reduction gear component applied to a reduction mechanism according to claim 2, characterized in that, The buffer rubber ring (3) also includes an abutment ring (1.5), which is formed on the top of the rotating abutment protrusion (1.2) and the abutment ring (1.5) fits against the upper end face of the internal gear (2) frame.
4. A reduction gear component applied to a reduction mechanism according to claim 2, characterized in that, The two sides of the insertion slot (1.4) respectively form a first pressing area (1.6) and a second pressing area (1.7). The width of the first pressing area (1.6) is greater than the width of the second pressing area (1.7), and the first pressing area (1.6) is located on the side of the rotation direction of the internal gear (2).
5. A reduction gear component applied to a reduction mechanism according to claim 4, characterized in that, The first extrusion area (1.6) has a shrinkage groove (2.1) formed on its upper surface.
6. A reduction gear component applied to a reduction mechanism according to claim 2, characterized in that, The rotating abutment protrusion (1.2) extends out of the snap-fit groove (1.1).
7. A reduction gear component applied to a reduction mechanism according to claim 1, characterized in that, The internal gear (2) is made of powder metallurgy, the buffer rubber ring (3) is made of vulcanized rubber material, and the internal gear ring bracket (1) is made of die-cast aluminum.
8. A reduction gear component applied to a reduction mechanism according to claim 2, characterized in that, The outer periphery of the internal gear (2) is formed with a plurality of insertion protrusions (1.3), and the insertion protrusions (1.3) are arranged in a cross-shaped arrangement.
9. A reduction gear component applied to a reduction mechanism according to claim 2, characterized in that, The rotating abutment protrusion (1.2) has a limiting protrusion (3.1) on both sides, and a limiting groove (3.2) is formed in the snap-fit groove (1.1), and the limiting protrusion (3.1) is inserted into the limiting groove (3.2).