A starter one-way limit structure
By adopting a contact design between the limit wheel and the limit sleeve in the starter motor, the problem of rotational edge grinding between the limit sleeve and the limit block is solved, thereby enhancing the stability and service life of the limit structure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU JIANGNAN ELECTRIC MOTOR CO LTD
- Filing Date
- 2025-08-25
- Publication Date
- 2026-07-31
AI Technical Summary
In traditional starters, the sliding engagement between the limit sleeve and the limit block leads to significant rotational wear, affecting the limiting effect and reducing service life.
The design incorporates a grooved inner wall contact between the limiting wheel and the limiting sleeve. Through the combined structure of the connecting bracket and the connecting block, it avoids rotational edge grinding between the limiting wheel and the limiting sleeve, thereby enhancing the connection stability between the limiting sleeve and the one-way clutch.
This reduces friction and wear between the limit sleeve and the one-way clutch, thus improving the service life of the starter motor.
Smart Images
Figure CN224579660U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of starter technology, and specifically relates to a starter one-way limit structure. Background Technology
[0002] In a starter motor, the one-way clutch, also known as a one-way switch, converts the electrical energy from the battery into mechanical energy to drive the engine flywheel and start the engine. Currently, the starter motor drives the engine to rotate by the small gear on the one-way clutch, which drives the engine's gear plate. After the engine starts, the one-way clutch causes the small gear to separate from the engine's gear plate. The one-way clutch is reset by a limit sleeve and a shift fork. One end of the shift fork slides and engages with the limit sleeve, while the other end is connected to the starter motor's magnetic switch. When the magnetic switch is activated, the piston on the magnetic switch pulls one end of the shift fork, causing the other end of the shift fork to move using the lever principle. This moves the limit sleeve, which in turn moves the one-way clutch on the starter motor's main shaft, thus limiting the one-way clutch.
[0003] Currently, the traditional connection between the shift fork and the limiting sleeve is generally a sliding snap-fit. Both the two support arms have square limiting blocks that rotate on opposite sides. The limiting sleeve has an annular groove for the limiting blocks to engage. When the starter motor's main shaft rotates, the one-way clutch drives the limiting sleeve to rotate, while the shift fork remains stationary. This means the limiting blocks are fixed in place, and the groove and the limiting blocks rub against each other, resulting in significant "rotational wear"—friction and wear caused by relative motion. When this wear becomes severe, it affects the shift fork's ability to limit the limiting sleeve, and consequently, its ability to limit the one-way clutch. Utility Model Content
[0004] The purpose of this utility model is to provide a one-way limit structure for a starter motor, the advantage of which is anti-friction.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a starter one-way limit structure, including a one-way clutch, a limit sleeve is sleeved on the surface of the one-way clutch, a connecting bracket is provided on one side of the limit sleeve, two connecting ears of the connecting bracket are located at the top and bottom of the limit sleeve, a connecting shaft is fixedly connected to the opposite side of the two ears of the connecting bracket, a connecting block is rotatably sleeved on the opposite side of the two connecting shafts, a support shaft is provided on the opposite side of the two connecting blocks, and a limit wheel is rotatably connected to the surface of the support shaft.
[0006] The above technical solution is adopted: the present invention has a connecting block rotating on both ears of the connecting bracket, and a limit wheel rotating on the connecting block. The limit wheel contacts the inner wall of the groove of the limit sleeve. When the limit sleeve is driven to rotate by the one-way clutch, the limit wheel is inside the limit sleeve and is driven to rotate by the inner wall of the groove of the limit sleeve. The two will not have the phenomenon of rotational edge grinding, reducing friction and wear caused by relative motion and improving its service life.
[0007] The present invention is further configured such that the number of the support shafts is four, the support shafts are fixedly connected to the connecting block, and the four support shafts are arranged in a rectangular pattern.
[0008] The above technical solution facilitates the installation of the limiting wheels and arranges them in a rectangular pattern so that they can contact the inner walls of the grooves on both sides of the limiting sleeve in pairs, thereby limiting the movement of the limiting sleeve and the connecting bracket.
[0009] The present invention is further configured such that a connecting pin is fixedly sleeved on the shaft section of the connecting bracket, and the connecting pin is rotatably connected to the starter housing.
[0010] The above technical solution allows the connecting bracket to be easily fixed to the starter housing via the connecting pin, enabling the connecting bracket to deflect around the connecting pin.
[0011] The present invention is further provided that the end of the connecting bracket away from the ear has an inner groove, and a connecting seat is hinged inside the inner groove.
[0012] The above technical solution facilitates the connection of one end of the connecting bracket to the piston inside the starter magnetic switch, allowing the magnetic switch to move one end of the connecting bracket.
[0013] The present invention is further configured such that annular guide blocks are fitted on opposite sides of the two connecting blocks, and annular guide grooves that are slidably connected to the annular guide blocks are provided on the two ears of the connecting bracket.
[0014] The above technical solution allows for sliding and limiting of the connecting block when it rotates around the connecting shaft on the ear of the connecting bracket.
[0015] The present invention is further configured such that a limiting block is fitted at one end of the limiting sleeve, and a limiting groove is provided on the one-way clutch to engage with the limiting block.
[0016] The above technical solution is adopted to limit the rotation of the limiting sleeve and the one-way clutch, so as to prevent rotation between the limiting sleeve and the one-way clutch.
[0017] The present invention is further configured such that both the surface of the limiting block and the surface of the one-way clutch are provided with slots, and a clamp is provided between the limiting block and the one-way clutch to engage with the slots.
[0018] The above technical solution facilitates the limiting of the one-way clutch and the limiting sleeve, preventing them from disengaging.
[0019] In summary, this utility model has the following beneficial effects: This invention features a connecting block that rotates on both ears of the connecting bracket. A limit wheel rotates on the connecting block and contacts the inner wall of the groove of the limit sleeve. When the limit sleeve is driven to rotate by a one-way clutch, the limit wheel is inside the limit sleeve and rotates by the inner wall of the groove of the limit sleeve. The two do not experience rotational edge grinding, thus reducing friction and wear caused by relative motion and improving its service life. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial exploded view of the structure of this utility model; Figure 3 This is a partial structural schematic diagram of the present invention; Figure 4 This is a partial structural schematic diagram of the present invention.
[0021] Reference numerals in the attached drawings: 1. One-way clutch; 2. Limit sleeve; 3. Connecting bracket; 4. Connecting shaft; 5. Connecting block; 6. Support shaft; 7. Limit wheel; 8. Connecting pin; 9. Inner groove; 10. Connecting seat; 11. Annular guide block; 12. Annular guide groove; 13. Limit block; 14. Limit groove; 15. Slot; 16. Clamp. Detailed Implementation
[0022] The present invention will be further described in detail below with reference to the accompanying drawings.
[0023] Example 1: refer to Figure 1 , Figure 2 , Figure 3 and Figure 4A starter one-way limit structure includes a one-way clutch 1, a limit sleeve 2 fitted on the surface of the one-way clutch 1, a connecting bracket 3 on one side of the limit sleeve 2, two connecting ears of the connecting bracket 3 at the top and bottom of the limit sleeve 2, a connecting shaft 4 fixedly connected to the opposite side of the two ears of the connecting bracket 3, a connecting block 5 rotatably fitted to the opposite side of the two connecting shafts 4, a support shaft 6 provided on the opposite side of the two connecting blocks 5, and a limit wheel 7 rotatably connected to the surface of the support shaft 6. The limit wheel 7 contacts the inner wall of the groove of the limit sleeve 2. When the limit sleeve 2 is driven to rotate by the one-way clutch 1, the limit wheel 7 is inside the limit sleeve 2 and driven to rotate by the inner wall of the groove of the limit sleeve 2. This prevents rotational wear, reduces friction and wear caused by relative motion, and improves its service life.
[0024] refer to Figure 2 There are four support shafts 6, which are fixedly connected to the connecting block 5. The four support shafts 6 are arranged in a rectangular pattern. By setting the number of support shafts 6 to four, the support shafts 6 are fixedly connected to the connecting block 5, and the four support shafts 6 are arranged in a rectangular pattern, it is convenient to install the limiting wheel 7. The limiting wheel 7 is arranged in a rectangular pattern so that it can contact the inner walls of the grooves on both sides of the limiting sleeve 2 in pairs, thereby limiting the limiting sleeve 2 and the connecting bracket 3.
[0025] refer to Figure 1 , Figure 2 and Figure 4 The shaft section of the connecting bracket 3 is fixedly sleeved with a connecting pin 8. The connecting pin 8 is rotatably connected to the starter housing. By setting the connecting pin 8, the connecting bracket 3 can be fixed on the starter housing via the connecting pin 8, and the connecting bracket 3 can be deflected with the connecting pin 8 as the center.
[0026] refer to Figure 1 , Figure 2 and Figure 4 The connecting bracket 3 has an inner groove 9 at the end away from the ear. A connecting seat 10 is hinged inside the inner groove 9. By setting the inner groove 9 and the connecting seat 10, it is convenient for one end of the connecting bracket 3 to connect with the piston inside the starter magnetic switch, so that the magnetic switch can drive one end of the connecting bracket 3 to move.
[0027] refer to Figure 3 and Figure 4Annular guide blocks 11 are mounted on the opposite sides of the two connecting blocks 5. Annular guide grooves 12 that are slidably connected to the annular guide blocks 11 are provided on the two ears of the connecting bracket 3. By setting the annular guide blocks 11 and the annular guide grooves 12, when the connecting block 5 is on the ears of the connecting bracket 3 and rotates around the connecting shaft 4, the connecting block 5 can be slidably limited on the ears of the connecting bracket 3.
[0028] refer to Figure 1 and Figure 2 One end of the limiting sleeve 2 is equipped with a limiting block 13, and the one-way clutch 1 is provided with a limiting groove 14 that engages with the limiting block 13. By setting the limiting block 13 and the limiting groove 14, the rotation of the limiting sleeve 2 and the one-way clutch 1 is limited, so as to prevent rotation between the limiting sleeve 2 and the one-way clutch 1.
[0029] refer to Figure 1 and Figure 2 The surface of the limiting block 13 and the surface of the one-way clutch 1 are both provided with slots 15. A clamp 16 is provided between the limiting block 13 and the one-way clutch 1 to engage with the slots 15. By providing the slots 15 and the clamp 16, it is convenient to limit the one-way clutch 1 and the limiting sleeve 2 to prevent them from separating.
[0030] Brief description of the usage process: When the piston of the magnetic switch pulls the connecting seat 10, the connecting bracket 3 deflects around the connecting pin 8, and the other end of the connecting bracket 3 moves, driving the limiting sleeve 2 and the one-way clutch 1 to move. When the small gear on the one-way clutch 1 meshes with the engine's gear plate, the engine main shaft rotates, driving the one-way clutch 1 to rotate. When the limiting sleeve 2 is driven to rotate by the one-way clutch 1, the limiting wheel 7 is inside the limiting sleeve 2 and is driven to rotate by the inner wall of the groove of the limiting sleeve 2. The two will not have the phenomenon of rotational edge grinding, reducing friction and wear caused by relative movement and improving its service life.
[0031] It should be noted that parts have a lifespan and can be replaced during regular maintenance when they no longer meet performance requirements. Deterioration in performance due to prolonged use of parts is not a design defect of this application.
[0032] 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 starter one-way clutch limiter structure comprising a one-way clutch (1), characterized by: The surface of the one-way clutch (1) is fitted with a limiting sleeve (2), and a connecting bracket (3) is provided on one side of the limiting sleeve (2). The two connecting ears of the connecting bracket (3) are located at the top and bottom of the limiting sleeve (2). A connecting shaft (4) is fixedly connected to the opposite side of the two ears of the connecting bracket (3). A connecting block (5) is rotatably fitted to the opposite side of the two connecting shafts (4). A support shaft (6) is provided to the opposite side of the two connecting blocks (5). A limiting wheel (7) is rotatably connected to the surface of the support shaft (6).
2. The starter one-way clutch limit structure of claim 1, wherein: The number of the support shafts (6) is four, and the support shafts (6) are fixedly connected to the connecting block (5). The four support shafts (6) are arranged in a rectangular shape.
3. The starter one-way clutch limit structure of claim 1, wherein: The shaft section of the connecting bracket (3) is fixedly sleeved with a connecting pin (8), and the connecting pin (8) is rotatably connected to the starter housing.
4. The starter one-way clutch limit structure of claim 1, wherein: The connecting bracket (3) has an inner groove (9) at the end away from the ear, and a connecting seat (10) is hinged inside the inner groove (9).
5. The starter one-way clutch limit structure of claim 1, wherein: An annular guide block (11) is mounted on the opposite side of each of the two connecting blocks (5), and an annular guide groove (12) is provided on each of the two ears of the connecting bracket (3) to slide in connection with the annular guide block (11).
6. The starter one-way clutch limit structure of claim 1, wherein: One end of the limiting sleeve (2) is equipped with a limiting block (13), and the one-way clutch (1) is provided with a limiting groove (14) that engages with the limiting block (13).
7. A starter one-way limiter structure according to claim 6, characterized in that: The surface of the limiting block (13) and the surface of the one-way clutch (1) are both provided with slots (15), and a clamp (16) is provided between the limiting block (13) and the one-way clutch (1) to engage with the slots (15).