CN209687642U - A kind of starter assembly - Google Patents

Abstract

The utility model belongs to the technical field of gasoline engines, and particularly refers to a starter assembly, which includes a cover body. The middle part of the cover body is provided with a mounting shaft, and a pull plate is connected to the mounting shaft in rotation. The center of the pull plate is set There is a boss, and the center of both sides of the boss is symmetrically provided with pawls, and the outer end of the pawl protrudes out of the boss with the forward rotation of the hand pull plate, and also includes the starting cup connected to the flywheel of the generator at the bottom of the cup , the boss is located in the mouth of the starting cup, and the inner wall of the opening of the starting cup is evenly distributed with more than two linkage grooves corresponding to the position of the pawl. The hand pull plate rotates forward, driving the outer end of the pawl Extend outward and abut against the linkage groove. The utility model adopts the starting cup with a closed structure, and realizes the transmission connection between the hand pull plate and the starting cup through the linkage groove and the pawl, effectively prevents the pawl from detaching from the starting cup, and prevents the pawl from being stuck with the starting cup. phenomenon occurs.

Description

a starter assembly

Technical field:

The utility model belongs to the technical field of gasoline engines, in particular to a starter assembly.

Background technique:

At present, the start of the gasoline engine is generally realized by the starter. The starter includes a start cup and a cover body. The start cup is connected with the flywheel of the gasoline engine. The middle part of the cover body is provided with a mounting shaft and a hand pull plate, which is wound on the hand pull plate. The outer end of the pull cord runs through the cover body and is connected with a handle. There is a boss in the middle of the hand pull plate, and pawls can be rotated on both sides of the upper surface of the boss. With limit plate. At the same time, the existing starting cup adopts the form of a window, and its working principle is as follows: the pull handle drives the hand pull plate to rotate forward through the pull rope, and the outer end of the ratchet sticks out and runs through the window of the start cup after the hand pull plate rotates forward. , and lean against the corresponding limit plate, so that the starter cup and the flywheel of the engine can rotate forward and synchronously with the pull plate to realize the start of the gasoline engine.

However, since the start of the engine requires the flywheel to reach the rated speed, that is, the speed of the forward rotation of the hand pull plate is relatively fast, and the pawl has a tendency to leave the hand pull plate outward, which will easily lead to the connection between the pawl and the reset device of the pawl Unstable or even invalid. When the hand pull plate is reversely turned to recover the pull cord, the pawl cannot be retracted in time and is stuck on the window of the starting cup, which causes the start cup and the pull plate to be stuck together, and the pull plate cannot Reverse rotation causes the whole starter to get stuck and cannot continue to drive the flywheel to rotate to start the gasoline engine.

Invention content:

The purpose of the utility model is to provide a starter assembly that prevents the pawl from detaching from the starting cup and prevents the pawl from being stuck.

The utility model is achieved in that:

A starter assembly, including a cover body, the middle part of the cover body is provided with a mounting shaft, the installation shaft is rotatably connected with a hand pull plate, the center of the hand pull plate is provided with a boss, and the center of the two sides of the boss There are pawls arranged symmetrically, and the outer end of the pawl protrudes out of the boss with the positive rotation of the hand pull plate. It also includes a starting cup connected to the flywheel of the generator at the bottom of the cup. The boss is located in the cup of the starting cup. In the mouth, there are more than two interlocking grooves evenly distributed on the inner wall of the cup mouth of the starting cup in the circumferential direction, corresponding to the upper and lower positions of the pawls. .

In the aforementioned starter assembly, the interlocking groove is a V-shaped groove, and the V-shaped side walls of the interlocking groove are the guiding surface and the abutting surface respectively, the pull plate rotates forward, the outer end of the ratchet and the The abutting surfaces are in conflict with each other and drive the starting cup to rotate forward and synchronously; the pull plate rotates in the reverse direction, and the guide surface guides the outer end of the ratchet to retract inward and separate from the linkage groove.

In the aforementioned starter assembly, the abutment surface intersects the radial line of the starter cup and forms an acute included angle, and the acute included angle is 0°-35°.

In the aforementioned starter assembly, the middle part of the pawl is bent inward to form a bent portion, the outer end of the pawl abuts against the linkage groove, the outer surface of the pawl abuts against the guide surface, and the pawl The axis of the outer end is perpendicular to the abutment surface.

In the aforementioned starter assembly, the linkage groove is punched outward from the inner wall of the starter cup.

In the aforementioned starter assembly, there is a smooth transition between the guide surface and the inner wall of the starter cup.

In the aforementioned starter assembly, two or four or six of the linkage slots are evenly distributed in the circumferential direction.

In the aforementioned starter assembly, opening mounting slots are provided on opposite sides of the boss, insertion hole slots are provided on the opening installation slots, and insertion hole slots are provided at the inner end of the ratchet. The matching connecting column, the ratchet is hinged in the opening installation groove through the connecting column, the end surface of the installation shaft is connected with the cover plate through the rotation of the bolt, a compression spring is arranged between the cover plate and the installation shaft, and the lower surface of the cover plate is provided with The protruding post that can be in conflict with the inner side wall of the ratchet, the hand pull plate rotates forward, and the pawl is driven to rotate outward around the axis of the connecting post through the protruding post.

In the aforementioned starter assembly, the cover plate is made of iron or stainless steel.

In the above-mentioned starter assembly, a cavity is provided in the middle of the lower surface of the pull plate, and a return coil spring is arranged in the cavity, the outer end of the return coil spring is fixedly connected with the pull plate, and the inner end is connected with the pull plate. The installation shaft is fixedly connected.

Compared with the prior art, the outstanding advantages of the utility model are:

1. The utility model adopts the starting cup with a closed structure, and the linkage groove and the pawl are abutted to realize the transmission connection between the hand pull plate and the starting cup, effectively preventing the pawl from detaching from the starting cup, and preventing the occurrence of the pawl and the starting cup. The occurrence of stagnation;

2. The abutment surface of the linkage groove of the utility model is the driving bearing surface between the linkage groove and the pawl, and the guide surface can guide the outer end of the pawl to retract inward and separate from the linkage groove when the hand pull plate rotates in the opposite direction. , so as to avoid the sticking phenomenon between the pawl and the starting cup;

3. The cover plate of the utility model is made of iron material, which can effectively reduce the friction coefficient between the pawl and the cover plate, and prevent the friction force between the pawl and the cover plate from being too large, thereby hindering the outward direction of the pawl. Indentation, causing the pawl and the starter cup to stick.

Description of drawings:

Fig. 1 is an overall perspective view of the utility model;

Fig. 2 is a three-dimensional view of the starting cup of the present utility model;

Fig. 3 is a partial enlarged view A of Fig. 2;

Fig. 4 is the structure diagram 1 of the transmission connection between the starting cup and the pull plate of the present invention;

Fig. 5 is the second structural diagram of the transmission connection between the starting cup and the pull plate of the utility model;

Fig. 6 is a three-dimensional view of the pull plate of the present utility model;

Fig. 7 is a three-dimensional view of the pawl of the present invention;

Fig. 8 is a perspective view of the cover plate of the present invention;

Fig. 9 is an exploded view of the utility model;

Fig. 10 is an overall sectional view of the utility model.

In the figure: 1. Cover body; 2. Installation shaft; 3. Pull plate; 4. Boss; 5. Pawl; 6. Start cup; 7. Linkage slot; 8. Guide surface; 10. Bending part; 11. Opening installation slot; 12. Plug hole slot; 13. Connecting column; 14. Bolt; 15. Cover plate; 16. Compression spring; , torsion spring; 20, drawstring; 21, handle; β, acute angle.

Detailed ways:

The utility model is further described below with specific embodiments, referring to Fig. 1-10:

A starter assembly, including a cover body 1, the middle part of the cover body 1 is provided with an installation shaft 2, a hand pull plate 3 is rotatably connected to the installation shaft 2, and a boss 4 is provided at the center of the hand pull plate 3 The center of both sides of the boss 4 is symmetrically provided with pawls 5, and the outer ends of the pawls 5 protrude out of the boss 4 with the forward rotation of the hand pull plate 3, and also include the bottom of the cup connected to the flywheel of the generator Start the cup 6, the boss 4 is located in the mouth of the cup 6, the inner wall of the cup 6 is evenly distributed on the inner wall of the cup 6, and there are more than two linkage grooves 7 corresponding to the position of the ratchet 5, and the pull plate 3 is forward Rotate and drive the outer end of the ratchet 5 to protrude outward and abut against the linkage groove 7 . The utility model adopts the starting cup 6 with a closed structure, and through the linkage groove 7 and the pawl 5, it realizes the transmission connection between the pull plate 3 and the starting cup 6, effectively prevents the pawl 5 from detaching from the starting cup 6, and prevents the ratchet The claw 5 and the starting cup 6 are stuck.

In order to prevent the ratchet 5 from being unstable or even invalid in connection with the reset device of the ratchet 5, the ratchet 5 is stuck in the linkage groove 7 and cannot be recovered in time. The linkage groove 7 is a V-shaped groove, and the V-shaped side walls of the linkage groove 7 They are the guide surface 8 and the abutment surface 9 respectively, the pull plate 3 rotates forward, the outer end of the ratchet 5 collides with the abutment surface 9 and drives the starting cup 6 to rotate forward and synchronously, and the abutment surface 9 is a linkage groove 7 and the drive bearing surface between the ratchet 5. The pull plate 3 rotates in the opposite direction, and the guide surface 8 guides the outer end of the ratchet 5 to retract inwardly and separate from the linkage groove 7, thereby avoiding the stagnation between the ratchet 5 and the starting cup 6 .

In order to improve the transmission efficiency between the starting cup 6 and the pull plate 3, the abutment surface 9 intersects the radial line of the starting cup 6 and forms an acute angle, and the acute angle β is 0°-35°, that is, The vertical line of the abutting surface 9 is close to the tangent of the starting cup 6 passing through the vertical foot, thereby increasing the effective driving force applied by the pawl 5 to the abutting surface 9 and reducing the distribution of the total driving force in other directions. force.

At the same time, in order to further improve the transmission efficiency between the starting cup 6 and the hand pull plate 3, optimize the driving force action point between the pawl 5 and the abutment surface 9, the middle part of the pawl 5 is bent inward to form a bend In the folding part 10 , the outer end of the ratchet 5 abuts against the linkage groove 7 , the outer surface of the ratchet 5 collides with the guide surface 8 , and the axis of the outer end of the ratchet 5 is perpendicular to the abutment surface 9 .

Furthermore, the linkage groove 7 is punched outward from the inner wall of the starting cup 6 .

In order to ensure that the outer end of the pawl 5 can be separated from the starting cup 6 smoothly under the guidance of the guiding surface 8 , there is a smooth transition between the guiding surface 8 and the inner wall of the starting cup 6 .

Furthermore, two or four or six of the linkage grooves 7 are evenly distributed in the circumferential direction. Present embodiment linkage groove 7 is provided with six, and its specific quantity should be determined according to actual needs.

At the same time, in this embodiment, the outer end of the ratchet 5 protrudes out of the boss 4 with the forward rotation of the hand pull plate 3. The specific structure is: the opposite sides of the boss 4 are provided with The opening installation groove 11 is provided with an insertion hole groove 12 on the opening installation groove 11, and the inner end of the pawl 5 is provided with a connecting column 13 matched with the insertion hole groove 12, and the ratchet 5 is hinged on the In the opening installation groove 11, the end face of the installation shaft 2 is connected with the cover plate 15 by the bolt 14 rotation, a compression spring 16 is arranged between the cover plate 15 and the installation shaft 2, and the lower surface of the cover plate 15 is provided with a pawl 5 The protruding post 17 that is in conflict with the inner side wall of the handle plate 3 rotates forward, and the pawl 5 is driven to rotate outward around the axis of the connecting post 13 through the protruding post 17 .

In addition, since the outer end of the ratchet 5 can be separated from the starting cup 6 under the guidance of the guide surface 8, the ratchet 5 of the present invention can work normally whether it is connected with a reset device for the ratchet 5 in the prior art. In the present embodiment, the ratchet 5 is connected with a reset device, and the reset device is a torsion spring 19. A setting method of the torsion spring 19: a torsion spring 19 is arranged in the insertion hole groove 12 below the connecting column 13, and the torsion spring 19 is arranged on the torsion spring 19. One end of the spring 19 is fixed on the boss 4 , and the other end is bent upwards and leans against the outer wall of the ratchet 5 . Another setting method of the torsion spring 19: a spring installation hole is provided on the upper surface of the boss 4 near the insertion hole slot 12, and a torsion spring 19 is fixed in the spring installation hole, and one end of the torsion spring 19 is fixed on the boss 4 , the other end protrudes outwards and bends against the pawl 5 on the outer side wall.

In order to reduce the coefficient of friction between the pawl 5 and the cover plate 15, prevent the friction force between the pawl 5 and the cover plate 15 from being too large, thereby hindering the inward retraction of the outer end of the pawl 5, causing the pawl 5 and the starting The cup 6 is stuck, and the cover plate 15 is made of iron or stainless steel. In this embodiment, however, the cover plate 15 is made of iron material.

In this embodiment, the specific implementation of the positive rotation of the hand pull plate 3: the cover body 1 is provided with a thread hole, and the outer end of the pull rope 20 wound on the hand pull plate 3 is connected through the thread hole. There is a handle 21, and the pull handle 21 drives the hand pull reel 3 to rotate forwardly through the stay cord 20.

The specific embodiment of the reverse rotation of the hand pull plate 3: the middle part of the lower surface of the hand pull plate 3 is provided with a concave cavity, and the reset coil spring 18 is arranged in the cavity, and the outer end of the reset coil spring 18 is connected with the pull plate 3 Fixedly connected, the inner end is fixedly connected with the installation shaft 2.

The above-described embodiment is only one of the preferred embodiments of the present utility model, and is not intended to limit the scope of implementation of the present utility model, so: all equivalent changes made according to the shape, structure and principle of the present utility model should be covered. Within the protection scope of the present utility model.

Claims (10)

1. A starter assembly, comprising a cover body (1), the middle part of the cover body (1) is provided with an installation shaft (2), and the installation shaft (2) is rotatably connected with a pull plate (3), The center of the pull plate (3) is provided with a boss (4), and the center of both sides of the boss (4) is symmetrically provided with pawls (5), and the outer ends of the ratchets (5) are aligned with the pull plate (3). It rotates and protrudes out of the boss (4), and is characterized in that it also includes a starting cup (6) connected to the flywheel of the generator at the bottom of the cup, and the boss (4) is located at the bottom of the starting cup (6). In the mouth of the cup, there are more than two linkage grooves (7) evenly distributed on the inner wall of the mouth of the starting cup (6) in the circumferential direction and corresponding to the positions of the pawls (5). The pull plate (3) rotates forward and drives the pawls ( 5) The outer end protrudes outwards and abuts against the linkage groove (7). 2. A starter assembly according to claim 1, characterized in that: the linkage groove (7) is a V-shaped groove, and the V-shaped side walls of the linkage groove (7) are respectively guide surfaces (8) With the abutment surface (9), the pull plate (3) rotates forward, and the outer end of the pawl (5) conflicts with the abutment surface (9) and drives the starting cup (6) to rotate forward synchronously; the pull plate (3) reverse rotation, the outer end of the guide surface (8) guides the pawl (5) to retract inwardly and separate from the linkage groove (7). 3. A starter assembly according to claim 2, characterized in that: the abutment surface (9) intersects the radial line of the starter cup (6) and forms an acute angle, the acute angle ( β) is 0°-35°. 4. A starter assembly according to claim 3, characterized in that: the middle part of the pawl (5) is bent inward to form a bent portion (10), and the outer end of the pawl (5) It abuts against the linkage groove (7), the outer surface of the ratchet (5) conflicts with the guide surface (8), and the axis of the outer end of the ratchet (5) is perpendicular to the abutment surface (9). 5. The starter assembly according to claim 2, characterized in that: the linkage groove (7) is formed by punching outward from the inner wall of the starting cup (6). 6. The starter assembly according to claim 2, characterized in that there is a smooth transition between the guide surface (8) and the inner wall of the starter cup (6). 7. The starter assembly according to claim 1, characterized in that there are two or four or six of the linkage grooves (7) evenly distributed in the circumferential direction. 8. A starter assembly according to claim 1, characterized in that: the opposite sides of the boss (4) are provided with opening installation grooves (11), and the opening installation grooves (11) are provided with inserting Connecting hole slot (12), the inner end of the ratchet (5) is provided with a connecting post (13) matching the insertion hole slot (12), and the ratchet (5) is hinged on the opening through the connecting post (13) In the installation groove (11), the end face of the installation shaft (2) is connected with the cover plate (15) through the rotation of the bolt (14), and a compression spring (16) is arranged between the cover plate (15) and the installation shaft (2). The lower surface of the cover plate (15) is provided with a boss (17) that can conflict with the inner side wall of the ratchet (5), and the hand pull plate (3) rotates forward, and the ratchet (5) is driven by the boss (17). ) rotate outward around the axis of the connecting column (13). 9. The starter assembly according to claim 8, characterized in that: the cover plate (15) is made of iron or stainless steel. 10. A starter assembly according to claim 8, characterized in that: a concave cavity is arranged in the middle of the lower surface of the pull plate (3), and a reset coil spring (18) is arranged in the concave cavity to reset The outer end of coil spring (18) is fixedly connected with pull plate (3), and the inner end is fixedly connected with installation shaft (2).