Auxiliary starting support of engine

Abstract

The auxiliary starting support of the engine comprises a shell and a starting shaft, a ratchet wheel is fixedly installed at the end, extending out of the shell, of the starting shaft, a positioning column is arranged at the position, close to the starting shaft, of the surface of the shell, and the positioning column is sleeved with a limiting piece and a torsional spring driving the limiting piece to reset. A positioning end and a starting end are integrally formed on the limiting piece, the positioning end and the starting end are formed by extending the peripheral side of the limiting piece along two angles respectively, arc-shaped limiting grooves are evenly distributed in the outer side of the ratchet wheel, and the positioning end is clamped into the arc-shaped limiting grooves under the elastic force action of the torsional spring and enables the ratchet wheel to rotate in one direction; the ratchet wheel is fixedly connected with the starting shaft, the arc-shaped end of the limiting piece is directly matched with the ratchet wheel, one-way rotation is achieved in the energy storage process, meanwhile, the starting disc on the auxiliary starter rotates reversely and is automatically started rapidly, the purpose of auxiliary starting of an engine can be achieved, and the situation that the starting shaft returns to a half circle after energy storage is avoided; the structure is simple, the cost is low, the service life is long, and the use safety is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of engine starting technology, and particularly relates to an auxiliary starting bracket for an engine of a single-cylinder gasoline engine or a diesel engine. Background Art

[0002] With the continuous development of the economy, the degree of agricultural mechanization is getting higher and higher, and agricultural cultivation equipment is used more and more commonly. Its power source is basically an air-cooled diesel engine. The air-cooled diesel engine must rely on an auxiliary starting device to enter the operating state before working; the commonly used auxiliary starting devices on the market still adopt the traditional hand-cranking starting mode. It is started by the driver using a crank to drive the starting mechanism on the auxiliary starting device, and the starting mechanism drives the energy storage shaft to rotate to tighten the elastic force of the scroll spring in the auxiliary starting device, and then generates an explosive force when the elastic force of the scroll spring is released to drive the starting cup on the air-cooled diesel engine to rotate at a high speed to achieve starting.

[0003] Chinese Patent No. 2017217275091 discloses a starting mechanism for a new type of air-cooled diesel engine starter, which includes a starting shaft disposed within the housing of the starter. One end of the starting shaft extends outside the housing, and a ratchet is positioned on this end of the starting shaft. A positioning post is positioned outside the housing, and a stop piece and an elastic member are provided outside the housing. The center of the stop piece is sleeved on the positioning post. A limiting piece and a starting piece are integrally formed on the stop piece, and the limiting piece and the starting piece respectively extend from the outer peripheral side of the stop piece along two angles. A positioning portion is provided on the limiting piece. Under the elastic force of the elastic member, the positioning portion snaps into the teeth outside the ratchet and enables the ratchet to rotate unidirectionally. A connecting portion for connecting with the cable of agricultural equipment is provided on the starting piece. In the starting mechanism of the above new type of air-cooled diesel engine starter, the positioning portion includes a positioning flange that bends downward and inward from one side of the limiting piece to form an L shape, and a roller hinged within the positioning flange through a pin shaft. The roller is located between two adjacent teeth outside the ratchet. When the ratchet rotates, the outer wall of the teeth outside the ratchet can slide past the roller. During installation in the operation process, the roller is hinged within the positioning flange through a pin shaft to form the positioning portion. The roller is located between two adjacent teeth outside the ratchet. When the driver rotates the starting shaft using a crank, the outer wall of the teeth outside the ratchet will slide past the roller. During the process of the outer wall of the teeth sliding past the roller, the outer wall of the teeth will push the limiting piece to swing away from the ratchet against the elastic force of the elastic member with the positioning post as the fulcrum. That is to say, according to this action process, the ratchet can rotate freely without being restricted by the stop piece. When the driver stops rotating the starting shaft, the starting force accumulated by the starting shaft needs to be released. However, since the outer wall of the teeth outside the ratchet abuts against the roller, the ratchet cannot be rotated. Thus, the starting force of the starting shaft is fixed after being accumulated. During the operation process, in order to combine the starting claw on the clutch mechanism with the starting cup, it is necessary to store energy in the starting shaft and then rotate it half a turn to combine the starting claw with the starting cup. During the rotation operation process, it is easy to have too much stored energy. In the case of improper operation, it may cause the reverse speed to be too fast and result in injury. Therefore, it is necessary to design an auxiliary starting for a new engine to reduce costs, avoid injury caused by rotation during starting, and improve the safety of equipment use.

[0004] The applicant applied for a utility model patent in April 2024, with the application number: 2024207682848, and its name is an auxiliary starter for an engine. The auxiliary starter for the engine is provided with a starting disk and a multi-sided special-shaped hole structure on the claw seat. When the energy storage shaft rotates in reverse, it drives the starting disk to rotate rapidly to drive the starting claw to open. At the same time, the design of the multi-sided shaft on the energy storage shaft swinging in the multi-sided special-shaped hole facilitates the pre-opening of the starting claw, preventing the hard impact between the starting claw and the starting cup, extending the service life. At the same time, this structure is simple, compact, light in weight, convenient to operate, and low in cost. During the operation of this structure, it avoids the process that the starting shaft on the starting bracket needs to be pre-opened half a turn in advance when rotating, so that the starting claw opens and combines with the starting cup. Therefore, the applicant improves the starting bracket to make the starting bracket simple in structure, low in cost, and convenient to operate. Summary of the Invention

[0005] Aiming at the deficiencies existing in the prior art, the present utility model provides an auxiliary starting bracket for an engine. The auxiliary starting bracket for the engine is fixedly connected with the starting shaft through a ratchet wheel, and the arc-shaped end of the limiting piece is directly matched with the ratchet wheel. With the characteristic of one-way rotation during energy storage, and at the same time, by using the reverse rotation of the starting disk on the auxiliary starter to quickly and automatically open, it can achieve the purpose of assisting in starting the engine, avoiding the starting shaft from rotating half a turn after energy storage, and having the advantages of simple structure, low cost, long service life, and high use safety.

[0006] An auxiliary starting bracket for an engine of the present utility model includes a housing and a starting shaft arranged inside the housing. One end of the starting shaft extending out of the housing is fixedly installed with a ratchet wheel. A positioning column is arranged on the surface of the housing near the starting shaft. A limiting piece and a torsion spring for driving the limiting piece to reset are sleeved on the positioning column. A positioning end and a starting end are integrally formed on the limiting piece. The positioning end and the starting end respectively extend from the outer peripheral side of the limiting piece along two angles. Arc-shaped limiting grooves are evenly distributed on the outer side of the ratchet wheel. The positioning end is clamped into the arc-shaped limiting groove under the elastic force of the torsion spring to make the ratchet wheel rotate in one direction.

[0007] Further, the end of the starting shaft is set as a pentagonal shaft, and a pentagonal hole adapted to the pentagonal shaft is arranged at the center of the ratchet wheel.

[0008] Further, a wear-resistant gasket is arranged between the bottom of the limiting piece and the housing, and a snap ring for preventing the limiting piece from falling off is arranged at the end of the positioning column.

[0009] Further, a connecting end is integrally formed on the limiting piece away from the positioning end and the starting end, and a wire connecting hole for installing a wire is arranged on the connecting end.

[0010] Further, the main body of the limiting piece, the starting end, the positioning end, and the connecting end are arranged on the same plane and have the same thickness.

[0011] Furthermore, the main body of the limiting piece, the starting end and the positioning end are arranged on the same plane and have the same thickness. A flanging part bent upward is arranged on one side of the connecting end close to the end, and the wire pulling connection hole is arranged on the flanging part.

[0012] Furthermore, a wire pulling mounting bracket for preventing the wire pulling from falling off is arranged on the surface of the housing, and a positioning notch for the wire pulling of the agricultural equipment to pass through is arranged on the wire pulling mounting bracket.

[0013] Furthermore, the limiting piece is arranged as an integrally formed body formed by stamping a steel plate.

[0014] Furthermore, a torsion spring connection post connected to one end of the torsion spring is arranged on the surface of the housing near the positioning post, and a torsion spring connection groove connected to the other end of the torsion spring is arranged on the outer wall of the limiting piece near the positioning end.

[0015] The beneficial effects of the present utility model are as follows:

[0016] The auxiliary starting bracket of the engine of the present utility model is fixedly connected to the starting shaft through a ratchet wheel, and the arc-shaped end of the limiting piece is directly matched with the ratchet wheel. With the characteristic of one-way rotation during energy storage and the use of the reverse rotation of the starting disk on the auxiliary starter to quickly and automatically start, the purpose of assisting in starting the engine can be achieved, avoiding the starting shaft from rotating back half a turn after energy storage, and having the advantages of simple structure, low cost, long service life and high use safety. Description of the Drawings

[0017] Figure 1 It is a cross-sectional view of the starter for installing the auxiliary starting bracket of the engine of the present utility model;

[0018] Figure 2 It is a use state diagram of the auxiliary starting bracket of the engine of the present utility model;

[0019] Figure 3 It is a top view of the auxiliary starting bracket of the engine of the present utility model;

[0020] Figure 4 It is a structural schematic diagram of the auxiliary starting bracket of the engine of the present utility model;

[0021] Figure 5 It is a use state diagram of another structure of the auxiliary starting bracket of the engine of the present utility model;

[0022] Figure 6 It is a structural schematic diagram of another structure of the auxiliary starting bracket of the engine of the present utility model;

[0023] Figure 7 It is a use state diagram of the third structure of the auxiliary starting bracket of the engine of the present utility model;

[0024] Figure 8 This is a schematic structural diagram of the third structure of the auxiliary starting bracket for the engine of the present utility model.

[0025] Reference numerals: 1 - housing; 2 - energy storage shaft; 3 - starting shaft; 4 - spring box; 5 - starting disk; 6 - ratchet; 7 - positioning post; 8 - limiting piece; 9 - connection end; 10 - torsion spring; 11 - positioning end; 12 - starting end; 13 - wire installation bracket; 14 - arc-shaped limiting groove; 15 - square hole; 16 - torsion spring connection groove; 17 - torsion spring connection post; 18 - snap ring; 19 - wire connection hole. Specific embodiments

[0026] The technical solutions in the present utility model will be further described below with reference to the accompanying drawings and embodiments. Embodiment 1

[0027] As Figures 1-4 shown is a schematic structural diagram of the auxiliary starting bracket for the engine of the present utility model. An auxiliary starting bracket for an engine of the present utility model includes a housing 1 and a starting shaft 3 disposed inside the housing 1. One end of the starting shaft 3 extending outside the housing 1 is fixedly installed with a ratchet 6. A positioning post 7 is disposed on the surface of the housing 1 near the starting shaft 3. A limiting piece 8 and a torsion spring 10 for driving the limiting piece 8 to reset are sleeved on the positioning post 7. A positioning end 11 and a starting end 12 are integrally formed on the limiting piece 8. The positioning end 11 and the starting end 12 respectively extend from the outer peripheral side of the limiting piece 8 along two angles. Arc-shaped limiting grooves 14 are uniformly distributed on the outside of the ratchet 6. The positioning end 11 is snapped into the arc-shaped limiting groove 14 under the elastic force of the torsion spring 10 to make the ratchet 6 rotate in one direction.

[0028] In this embodiment, the energy storage shaft 2 is disposed inside the body 1 and can rotate. The body 1 includes a housing with one end open and the other end closed, and a spring box 4 fixed inside the housing. A scroll spring is disposed inside the spring box 4. One end of the outer edge of the scroll spring is fixed on the spring box, and the energy storage shaft 2 passes through the center of the scroll spring. One end of the inner edge of the scroll spring is connected to the energy storage shaft 2. One end of the starting shaft 3 is located inside the housing and is connected with a driving gear. One end of the energy storage shaft 2 extends out of the spring box 4 and is connected with a driven gear. The driving gear is meshed with the driven gear.

[0029] One end of the starting shaft 3 located outside the housing is sleeved with a ratchet wheel 6. A positioning post 7 is fixed near the starting shaft 3 outside the housing. A limiting piece 8 is sleeved on the positioning post 7. A positioning end 11 is arranged on the limiting piece 8. Arc-shaped limiting grooves 14 are evenly distributed on the outer side of the ratchet wheel 6. When the limiting head starts, the positioning end 11 abuts against a side wall of the arc-shaped limiting groove 14 to circumferentially fix the limiting piece 9 and the ratchet wheel 6. In this way, the starting shaft 3 is circumferentially fixed to the ratchet wheel 6. When starting and storing energy, the starting shaft 3 is driven by a crank to drive the ratchet wheel 6 to rotate unidirectionally against the action of the positioning end 11. When the energy storage stops after the elastic force of the scroll spring is tightened, the energy storage shaft 2 drives the starting shaft 3 to rotate in the reverse direction under the release of the elastic force of the scroll spring. At this time, the ratchet wheel 6 is stuck by the positioning end 11 and remains stationary, so that the elastic force of the scroll spring is not released. Only when the user pulls the starting end 12 on the limiting piece 8 to make the positioning end 11 slide out of the arc-shaped limiting groove 14 on the ratchet wheel 6 and unlock, can the elastic force of the scroll spring be completely released to enable the energy storage shaft 2 to rotate at a high speed for energy release.

[0030] During energy release, when the energy storage shaft 2 rotates in the reverse direction, it drives the starting disk 5 to rotate quickly to drive the starting claw to open. At the same time, the design of the multi-sided shaft on the energy storage shaft swinging in the multi-sided shaped hole is used to facilitate the starting claw to open in advance, so that the starting claw can be opened quickly and stably to shorten the opening time of the starting claw and ensure the stable starting of the engine.

[0031] In this embodiment, the ratchet wheel 6 is fixedly connected to the starting shaft 3, and the arc-shaped end of the positioning end 11 on the limiting piece 8 is directly matched with the ratchet wheel 6. With the characteristic of unidirectional rotation during energy storage, and at the same time, the starting disk on the auxiliary starter rotates in the reverse direction to open automatically quickly, the purpose of assisting in starting the engine can be achieved, avoiding the starting shaft from rotating back half a turn after energy storage, and having the advantages of simple structure, low cost, long service life and high use safety.

[0032] In a preferred embodiment, the end of the starting shaft 3 is provided as a pentagonal shaft, and a pentagonal hole 15 adapted to the pentagonal shaft is provided at the center of the ratchet wheel. This structure in this embodiment is beneficial to the fixed connection between the ratchet wheel 6 and the starting shaft 3.

[0033] In a preferred embodiment, a wear-resistant gasket is provided between the bottom of the limiting piece 8 and the housing 1, and a snap ring 18 for preventing the limiting piece 8 from falling off is provided at the end of the positioning post 7. In this embodiment, the limiting piece 8 rotates on the positioning post 7. The friction between the limiting piece 8 and the housing 1 is reduced through the wear-resistant gasket, which facilitates the starting shaft 3 to drive the ratchet wheel 6 to rotate unidirectionally against the action of the positioning end 11 during energy storage, and facilitates the positioning end 11 on the limiting piece 8 to slide out of the arc-shaped limiting groove 14 on the ratchet wheel 6 during energy release.

[0034] In a preferred embodiment, a connection end 9 is integrally formed on the limiting piece 8 away from the positioning end 11 and the starting end 12. A wire connection hole 19 for installing a wire is provided on the connection end 9. During use of this structure, the starter can be activated through the wire, causing the positioning end 11 to slide out of the arc-shaped limiting groove 14 on the ratchet wheel 6, achieving unlocking so as to fully release the elastic force of the scroll spring and enabling the energy storage shaft 2 to rotate at a high speed for energy release.

[0035] In a preferred embodiment, a wire installation bracket 13 for preventing the wire from falling off is provided on the surface of the housing 1. The wire installation bracket 13 is provided with a positioning notch for the wire of the agricultural equipment to pass through. This structure facilitates restricting the routing position of the wire and avoids the wire being wound around the housing.

[0036] In a preferred embodiment, the limiting piece 8 is provided as an integrally formed body stamped from a steel plate. This structure of this embodiment makes the limiting piece 8 simple in structure, which can be formed by one stamping, and has a low cost.

[0037] In a preferred embodiment, a torsion spring connection post 17 connected to one end of the torsion spring 10 is provided on the surface of the housing 1 near the positioning post 7. A torsion spring connection groove 16 connected to the other end of the torsion spring 10 is provided on the outer wall of the limiting piece 8 near the positioning end 11. This structure of this embodiment facilitates the reset of the limiting piece 8. By driving the starting shaft 3 with a crank to drive the ratchet wheel 6 to rotate unidirectionally against the action of the positioning end 11 of the limiting piece 8, at this time the limiting piece 8 opens outwards, causing the positioning end 11 to passively slide out of the arc-shaped limiting groove 14 on the ratchet wheel 6. Then, under the action of the torsion spring 10, the limiting piece 8 retracts inwards, causing the positioning end 11 to slide into the next arc-shaped limiting groove 14 on the ratchet wheel 6, realizing the positioning to limit the reverse rotation of the ratchet wheel 6. Embodiment 2

[0038] As Figures 5-6 shown is a schematic structural diagram of the second embodiment of the auxiliary starting bracket of the engine of the present utility model; the difference between this embodiment and Embodiment 1 is that: the main body of the limiting piece 8, the starting end 12, the positioning end 11 and the connection end 13 are arranged on the same plane and have the same thickness. This structure of this embodiment is simple in structure, convenient for processing, can be formed by one stamping, and has a low cost. Embodiment 3

[0039] As Figures 7-8 shown is a schematic structural diagram of the second embodiment of the auxiliary starting bracket of the engine of the present utility model.

[0040] The difference between this embodiment and Embodiment 2 is that: the main body of the limiting piece 1, the starting end 12 and the positioning end 11 are arranged on the same plane and have the same thickness. A flanging portion bent upwards is provided on one side of the connection end 13 close to the end. The wire connection hole 19 is provided on the flanging portion. This embodiment adopts the flanging portion structure, which is beneficial for the wire to save effort and facilitates the wire to open the limiting piece 8.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. An auxiliary starting bracket for an engine, comprising a housing and a starting shaft disposed within the housing, characterized in that: One end of the starting shaft extending out of the housing is fixedly installed with a ratchet wheel. A positioning post is arranged on the housing surface near the starting shaft. A limiting piece and a torsion spring for driving the limiting piece to reset are sleeved on the positioning post. A positioning end and a starting end are integrally formed on the limiting piece. The positioning end and the starting end respectively extend from the outer peripheral side of the limiting piece along two angles. Arc-shaped limiting grooves are evenly distributed on the outer side of the ratchet wheel. The positioning end is clamped into the arc-shaped limiting groove under the elastic force of the torsion spring to make the ratchet wheel rotate unidirectionally.

2. The auxiliary starting bracket of an engine according to claim 1, wherein: The end of the starting shaft is set as a pentagonal shaft, and a pentagonal hole adapted to the pentagonal shaft is arranged at the center of the ratchet wheel.

3. The auxiliary starting bracket of an engine according to claim 1 or 2, characterized in that: A wear-resistant gasket is arranged between the bottom of the limiting piece and the housing, and a snap ring for preventing the limiting piece from falling off is arranged at the end of the positioning post.

4. The auxiliary starting bracket of an engine according to claim 3, characterized in that: A connecting end is integrally formed on the limiting piece away from the positioning end and the starting end, and a wire-pulling connection hole for installing a wire is arranged on the connecting end.

5. The auxiliary starting bracket of an engine according to claim 4, characterized in that: The main body of the limiting piece, the starting end, the positioning end and the connecting end are arranged on the same plane and have the same thickness.

6. The auxiliary starting bracket of an engine according to claim 4, characterized in that: The main body of the limiting piece, the starting end and the positioning end are arranged on the same plane and have the same thickness. A flanging part bent upward is arranged on one side of the connecting end close to the end, and the wire-pulling connection hole is arranged on the flanging part.

7. The auxiliary starting bracket of an engine according to claim 4, characterized in that: A wire-pulling mounting bracket for preventing the wire from falling off is arranged on the housing surface, and a positioning notch for the wire of the agricultural equipment to pass through is arranged on the wire-pulling mounting bracket.

8. The auxiliary starting bracket of an engine according to claim 1, characterized in that: The limiting piece is set as an integrally formed body stamped from a steel plate.

9. The auxiliary starting bracket of an engine according to claim 1, characterized in that: A torsion spring connecting post connected to one end of the torsion spring is arranged on the housing surface near the positioning post, and a torsion spring connecting groove connected to the other end of the torsion spring is arranged on the outer wall of the limiting piece near the positioning end.

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