Anti-locking isolator of high-power diesel starter

Abstract

The utility model discloses an anti-locking isolator of a high-power diesel starter, which adopts the design of a wedge-shaped groove on the inner hole wall of a ring seat, double pin rollers and a connected spring, realizes power transmission through the compression of the pin rollers during forward rotation, and avoids locking and reverse driving force transmission through the rapid disengagement of the pin rollers during reverse rotation. The integrated structure of the one-piece spring and the ball design further improve durability and response speed, and the one-piece spring is suitable for a high-load diesel engine starter.

Description

Technical Field

[0001] The utility model relates to a starter upper component, in particular to an anti-stuck one-way device of a high-power diesel starter. Background Art

[0002] When the engine is started, the starter is required to start it. The structure of the starter is mainly to drive the engine to rotate by meshing the output of the one-way device with the flywheel of the engine. After the high-power diesel engine is started, due to the large power and torque, when the flywheel speed exceeds the one-way device speed, the clutch in the one-way device may be reversed and stuck, and the reverse driving force is transmitted to the starter electric drive structure, causing the internal gears or motor to burn out, posing a safety hazard. In the prior art, the clutch mechanism in the one-way device usually adopts a roller clutch structure, but there are the following problems:

[0003] 1. The roller and spring are easily affected by the vibration of the one-way clutch, which makes the roller tilt, resulting in slow response to reverse separation and easy to get stuck due to instantaneous impact;

[0004] 2. The spring fails due to fatigue, the elasticity decreases after long-term use, and the reverse locking reliability is insufficient. Utility Model Content

[0005] In order to solve the above problems, the purpose of the utility model is to provide an anti-stuck one-way device for a high-power diesel starter, which solves the problems of reverse jamming, short spring life and delayed separation response of the traditional structure, ensures that the one-way device quickly releases power transmission after the engine is started, and protects the starter electric drive structure.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-stuck one-way device for a high-power diesel starter, comprising a ring seat 1, a one-way output shaft 2 and a clutch gear 3, one end of the one-way output shaft is placed in the hollow of the ring seat, and the one-way output shaft 2 connected to the clutch gear 3 is provided with a plurality of evenly distributed wedge-shaped grooves 101 on the inner hole wall of the ring seat 1, and two rollers 4 and a conjoined spring 5 are arranged in each wedge-shaped groove 101;

[0007] The conjoined spring 5 has two parallel upright independent springs 501, and the end of each independent spring 501 contacts the corresponding roller 4, forcing the roller 4 to press against the left limit position of the wedge-shaped groove 101, so that the peripheral wall of the roller 4 contacts the one-way output shaft 2;

[0008] The left side wall of the wedge-shaped groove 101 is an inclined surface, and the right side wall is a vertical surface.

[0009] The connected spring 5 is an integrated stamping structure, and a common bottom surface is arranged between the two independent springs 501 .

[0010] The inner hole wall surface of the ring seat 1 is sprayed with a tungsten carbide wear-resistant layer.

[0011] The independent spring 501 is a square spiral structure, and the length of the independent spring 501 is adapted to the length of the roller 4 .

[0012] The beneficial effect of the utility model is that when the roller is in the leftmost position of the wedge-shaped groove and the ring seat rotates clockwise, the roller will generate friction with the one-way output shaft, thereby driving the clutch gear to rotate. When the clutch gear completes the engine start and the speed of the flywheel is greater than the clutch gear, the clutch gear will reverse. At this time, the one-way output shaft reverses to cause the roller to rotate and press against the connected spring, thereby avoiding the reversal of the electric drive shaft and ensuring the safety of the electric drive structure. The two rollers are shorter than one roller, so that when they are vibrated, the tilt angle will not be too large, which can greatly avoid being stuck. The design of two independent springs can ensure the service life of the spring and make the structure more reliable.

[0013] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of a specific implementation method of the utility model;

[0015] Figure 2 It is a partial cutaway view of a specific implementation mode of the utility model;

[0016] Figure 3 It is a structural schematic diagram of a conjoined spring in a specific implementation manner of the utility model.

[0017] In the figure, 1, ring seat; 2, one-way output shaft; 3, clutch gear; 4, roller; 5, connected spring; 501, independent spring; 1011, inclined surface; 1012, vertical surface; 101, wedge groove. DETAILED DESCRIPTION

[0018] The present invention is specifically described below through embodiments, which are only used to further illustrate the present invention and should not be construed as limiting the protection scope of the present invention.

[0019] like Figure 1 — Figure 3 As shown, this embodiment discloses an anti-stuck one-way device for a high-power diesel starter, comprising a ring seat 1, a one-way output shaft 2 and a clutch gear 3, one end of the one-way output shaft 2 is placed in the hollow of the ring seat 1, and the one-way output shaft 2 connected to the clutch gear 3 is provided with a plurality of evenly distributed wedge-shaped grooves 101 on the inner hole wall of the ring seat 1, and two rollers 4 and a conjoined spring 5 are provided in each wedge-shaped groove 101;

[0020] The conjoined spring 5 has two parallel upright independent springs 501, and the end of each independent spring 501 contacts the corresponding roller 4, forcing the roller 4 to press against the left limit position of the wedge-shaped groove 101, so that the peripheral wall of the roller 4 contacts the one-way output shaft 2;

[0021] The left side wall of the wedge-shaped groove 101 is an inclined surface 1011 , and the right side wall of the wedge-shaped groove 101 is a vertical surface 1012 .

[0022] The connected spring 5 is an integrated stamping structure, and a common bottom surface is arranged between the two independent springs 501 . The common bottom surface of the connected spring 5 contacts the vertical surface, and the independent springs 501 on the connected spring 5 contact the corresponding rollers 4 .

[0023] The inner hole wall surface of the ring seat 1 is sprayed with a tungsten carbide wear-resistant layer, which can improve the wear resistance of the inner wall of the ring seat 1.

[0024] The independent spring 501 is a square spiral structure, and the length of the independent spring 501 is matched with the length of the roller 4, so that the contact with the roller 4 can be more stable and reliable.

[0025] After adopting the above technical solution, when the roller is in the leftmost position of the wedge groove and the ring seat rotates clockwise, the roller will generate friction with the one-way output shaft, thereby driving the clutch gear to rotate. When the clutch gear completes the engine start and the speed of the flywheel is greater than the clutch gear, the clutch gear will reverse. At this time, the one-way output shaft reverses and causes the roller to rotate and press against the connected spring, thereby avoiding the reversal of the electric drive shaft and ensuring the safety of the electric drive structure. The two rollers are shorter than one roller, so that when they are vibrated, the tilt angle will not be too large, which can greatly avoid being stuck. The design of two independent springs can ensure the service life of the springs and make the structure more reliable, thereby solving the problems of reverse jamming, short spring life and delayed separation response of the traditional structure, ensuring that the one-way device quickly releases power transmission after the engine is started, and protecting the starter electric drive structure.

[0026] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0027] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An anti-seize one-way clutch for a high-power diesel starter, comprising an annular seat (1), a one-way output shaft (2) and a clutch gear (3). One end of the one-way output shaft is placed in the hollow of the annular seat, and the clutch gear (3) is connected to the one-way output shaft (2). It is characterized in that: A plurality of uniformly distributed wedge-shaped grooves (101) are provided on the inner hole wall of the annular seat (1), and two rollers (4) and a connecting spring (5) are arranged in each wedge-shaped groove (101); The connecting spring (5) has two parallel and upright independent springs (501), and the end of each independent spring (501) contacts the corresponding roller (4), forcing the roller (4) to abut against the left extreme position of the wedge-shaped groove (101), so that the peripheral wall of the roller (4) contacts the one-way output shaft (2); The left side wall of the wedge-shaped groove (101) is an inclined surface, and the right side wall is a vertical surface.

2. The anti-sticking one-way clutch according to claim 1, wherein: The connecting spring (5) is an integrally stamped structure, and a same bottom surface is provided between the two independent springs (501).

3. The anti-jamming one-way clutch according to claim 1, characterized in that: A tungsten carbide wear-resistant layer is sprayed on the surface of the inner hole wall of the annular seat (1).

4. The anti-jamming one-way clutch according to claim 1, characterized in that: The independent spring (501) is a square spiral structure, and the length of the independent spring (501) is adapted to the length of the roller (4).

Images