Starter

Abstract

The present invention provides a starting device, belonging to the field of engine technology. It solves how to make the applicability wider and the practical value higher. The starting device includes a shell and a rotatable starting disk arranged in the shell. At least two receiving grooves are symmetrically arranged on the starting disk. A starting claw is hinged in each receiving groove. The starting claw can swing relative to the starting disk. The hinge point of the starting claw is located at the inner end position close to the starting claw. The receiving groove has a limiting side wall corresponding to the center direction of the starting disk. When the starting claw swings away from the center of the starting disk, the inner end of the starting claw can abut against the limiting side wall to block the tendency of the starting claw to continue to swing outward. The starting device has greatly improved the applicability, is more universal, and has higher practical value.

Description

Technical Field

[0001] The invention belongs to the technical field of engines and relates to a starting device, in particular to a hand-pull starting device. Background Art

[0002] With the continuous development of the economy, the degree of agricultural mechanization is getting higher and higher, and agricultural tillage machines have been used more and more widely. Their power sources are diesel engines or gasoline engines. Both diesel engines and gasoline engines must use a set of auxiliary starting equipment, the so-called starter, before working to enter the operating state.

[0003] Common starters are divided into hand-crank starters and hand-pull starters. Compared with hand-crank starters, hand-pull starters have a relatively stable market due to their relatively simple structure and low cost. Currently, a relatively common hand-pull starter, such as a hand-pull starter for an engine disclosed in application number 201220545144.1, includes a fixed cover with a recess inside and a starting disk arranged in the recess on the fixed cover, the recess has a central axis and a coil spring groove, the starting disk is sleeved on the central axis, the starting disk can rotate around the central axis, a coil spring is arranged in the coil spring groove, one end of the coil spring is fixed to the side wall of the coil spring groove, and the other end is fixed to the starting disk, the starting disk has an annular groove, a starting rope is arranged in the annular groove, the outer end of the starting rope passes through the edge of the fixed cover, and mounting grooves are arranged at intervals at the outer end of the starting disk, and a starting claw is hingedly arranged in the mounting groove. During operation, the starting rope is pulled to make the starting disk rotate around the central axis. During the rotation, the coil spring is wound to accumulate force. At the same time, the starting claw swings around the hinge point to open outward and inserts into the corresponding hole of the starting cup on the engine. When the starting rope is loosened, the starting disk rotates around the central axis in the opposite direction at high speed under the elastic force released by the coil spring, so that the starting disk can drive the starting cup to rotate at high speed to start the engine.

[0004] However, the above-mentioned hand-pull starting device also has some disadvantages: the hinge point of the starting claw is set in the middle and in the middle position of the installation groove, resulting in a small swing range of the starting claw around the hinge point, so that the starting claw can only be opened at a small angle.

[0005] However, the size of the starting cup of each agricultural equipment engine is different due to different power or different gasoline and diesel, so the hand-pulled starting device can only match the engine of the specific model and cannot be universal, so the applicability is relatively low. In order to make the hand-pulled starting device more applicable, the technicians in this field can easily think of making the starting claw as large and long as possible to increase the distance that the starting claw extends out of the installation groove, but doing so will undoubtedly increase the overall volume of the entire starting device, which is not practical. Summary of the invention

[0006] The purpose of the present invention is to propose a starting device in view of the above-mentioned problems existing in the prior art, and the technical problem to be solved is how to make the device more widely applicable and more practical.

[0007] The purpose of the present invention can be achieved by the following technical solutions:

[0008] A starting device includes a shell and a starting disk that is arranged in the shell and can rotate. The starting disk is symmetrically provided with at least two receiving grooves, each of which is hinged with a starting claw. The starting claw can swing relative to the starting disk. It is characterized in that the hinge point of the starting claw is located at an inner end position close to the starting claw, and the receiving groove has a limiting side wall corresponding to the center direction of the starting disk. When the starting claw swings in a direction away from the center of the starting disk, the inner end of the starting claw can abut against the above-mentioned limiting side wall to prevent the starting claw from continuing to swing outward.

[0009] The shell of the starting device is fixed on the casing of the engine, and the position of the starting claw is in the starting cup on the engine. When the starting disk rotates, the starting claw can swing relative to the starting disk in a direction away from the center of the starting disk, so that the outer end of the starting disk extends out of the receiving groove and can be inserted into the corresponding hole on the starting cup. When the inner end of the starting claw abuts against the limiting side wall, the starting claw is blocked and stops swinging outward, and the inner end of the starting claw abuts against the limiting side wall to support the swinging state of the starting claw, ensuring that the outer end of the starting claw is inserted into the corresponding hole on the starting cup and combined with the starting cup to start the engine.

[0010] The present starting device sets the hinge point of the starting claw close to the inner end of the starting claw, which can shorten the distance from the inner end of the starting claw to the hinge point, greatly increasing the swing amplitude of the starting claw, so that the starting claw can be opened outward at a larger angle, and the starting claw can maintain the large-angle opening state by using the cooperation of the limiting side wall and the inner end of the starting claw. The different engine powers lead to different sizes of the starting cups. Since the starting claw can be opened outward at a larger angle, the present starting device can cooperate with starting cups of various sizes, thereby greatly improving the applicability of the present starting device.

[0011] In the above-mentioned starting device, the limiting side wall is an outwardly convex arc surface, and a circular arc-shaped concave surface is provided on the side of the starting claw close to the center direction of the starting disk.

[0012] The hinge point of the start claw is located near the inner end of the start claw so that the start claw can be opened to the maximum extent. Then, when the start claw swings back, the side of the start claw close to the center direction of the start disk is easy to interfere with the limit groove wall. For this reason, a circular arc recessed surface is provided on the side of the start claw close to the center direction of the start disk. The circular arc recessed surface can make way for the interference between the limit groove wall and the start claw, thereby ensuring that the start claw can be retracted into the receiving groove to the maximum extent and can be separated from the start cup smoothly. While the start claw can be opened to the maximum extent to improve applicability, the reliability of the structure is guaranteed.

[0013] In the above-mentioned starting device, a limiting surface is provided at the inner end of the starting claw, and the limiting surface is a concave arc surface. When the starting claw swings away from the center of the starting disk, the limiting surface abuts against the limiting side wall.

[0014] A limit surface is set at the inner end of the starting claw, and the limit surface is a concave limit surface. When the starting claw swings in a direction away from the center of the starting disk, the limit surface abuts against the limit side wall, so that the starting claw cannot continue to swing. At the same time, the starting claw and the starting disk can be more closely connected as a whole to drive the engine's starting cup to rotate at high speed.

[0015] In the above-mentioned starting device, the hinge point of the starting claw is eccentrically arranged in the accommodating groove.

[0016] The hinge point of the starting claw is eccentrically arranged in the receiving groove, so that the starting claw can be arranged to be relatively long, and can extend further out of the receiving groove after the starting claw swings, which can also increase the versatility of the starting device to a certain extent.

[0017] In the above-mentioned starting device, the opening angle of the starting claw is 50° to 55°.

[0018] In the above-mentioned starting device, a pull rope wound in several circles is provided on the outer peripheral surface of the starting disk, the inner end of the pull rope is fixedly connected to the starting disk, and the outer end of the pull rope passes through the outside of the shell. A rotatable limiter is provided in the shell, and the outer side surface of the limiter presses on the pull rope to bend the pull rope.

[0019] The starter device is a hand-pull type. The user pulls the starter disk to rotate through the outer end of the pull rope, so that the starter claw extends out of the receiving groove and inserts into the corresponding hole on the engine starter cup.

[0020] Since the pull cord is long, it is easy for the pull cord to get stuck in the housing or become difficult to pull due to angle problems when the user pulls the pull cord, which is very inconvenient for some older users to use. For this reason, a limiter is provided in the housing, and the outer side of the limiter is pressed on the pull cord to limit the pulling angle of the pull cord, thereby ensuring that the pull cord can be pulled out stably; at the same time, since the limiter can rotate, when the pull cord is pulled, the limiter will rotate under the action of friction, so that rolling friction will be formed between the pull cord and the limiter, thereby greatly reducing the resistance of the limiter to the pull cord and reducing the wear of the pull cord. By limiting the pulling angle of the pull cord by the limiter and forming rolling friction between the pull cord and the limiter when the pull cord is pulled, older users can also use the starting device conveniently, thereby greatly improving the applicability, being more universal and having higher practical value.

[0021] In the above-mentioned starting device, a positioning shaft is fixed in the shell near the starting disk, the limiting member is a hollow cylinder sleeved on the positioning shaft, the pull rope is in contact with the outer circumferential surface of the limiting member, or the limiting member is a roller, a support bearing is provided between the roller and the positioning shaft, an annular limiting groove is provided on the outer circumferential surface of the roller, and the pull rope passes through the annular limiting groove.

[0022] When the user pulls the pull rope, the friction between the pull rope and the hollow cylinder / roller will easily cause the hollow cylinder / roller to rotate, so that rolling friction will be formed between the pull rope and the limit member, greatly reducing the resistance to the pull rope caused by the limit member pressing against the pull rope.

[0023] In the above-mentioned starting device, the shell is provided with a concave cavity, the inner circumferential wall of the concave cavity is provided with an annular boss, the starting disk includes a disk body and a claw seat protruding from the center of one end face of the disk body, the disk body and the limiting member are both located in the center hole of the annular boss, and the end face of the annular boss is fixed with a dustproof plate that blocks the disk body and the limiting member in the center hole of the annular boss, and the claw seat extends out of the dustproof plate.

[0024] The dustproof plate blocks the disc body and the limiter in the center hole of the annular boss, thereby playing a dustproof role. When used in a paddy field environment, it can prevent splashing water or mud from entering the concave cavity and getting stuck between the pull rope and the limiter, ensuring that rolling friction can be stably formed between the pull rope and the limiter to reduce the resistance when pulling the pull rope.

[0025] In the above-mentioned starting device, the outer diameter of the disk body is slightly smaller than the inner diameter of the center hole of the annular boss, the inner side wall of the annular boss is provided with a notch, the side of the shell is provided with a wire outlet hole, the inner end opening of the wire outlet hole is located on the inner wall of the notch, and the stopper is located in the notch. The inner side wall of the annular boss is provided with a notch, and the stopper is arranged in the notch, which avoids interference with the disk body and ensures the reliability of the structure.

[0026] In the above-mentioned starting device, an annular blocking part is provided on the outer side of one end of the positioning shaft, a positioning recessed hole is provided on the dustproof plate, the other end of the positioning shaft is inserted into the positioning recessed hole, and the limiting part is axially positioned between one end face of the annular blocking part and the surface where the positioning recessed hole port is located.

[0027] When the dustproof plate is fixed in the concave cavity, one end of the positioning shaft will be inserted into the positioning concave hole on the dustproof plate. Since an annular blocking part is provided on the outer side of the other end of the positioning shaft, a restriction on the limiting member will be formed between one end face of the annular blocking part and the surface where the port of the positioning concave hole is located, so that the limiting member and the positioning shaft can be positioned axially, and the limiting member can only rotate to ensure that the pull rope will not encounter additional resistance when being pulled.

[0028] In the above-mentioned starting device, a through hole is penetrated through the bottom wall of the concave cavity, and one end of the positioning shaft provided with an annular blocking portion is a threaded connection portion, which passes through the shell body through the through hole, and a fastening nut is threadedly connected to the threaded connection portion passing through the shell body, and one end face of the annular blocking portion abuts against the bottom wall of the concave cavity.

[0029] During assembly, the threaded connection part of the positioning shaft is passed through the through hole outside the shell, and then the fastening nut is threadedly connected to the threaded connection part. The positioning shaft and the shell can be fixed together through the fastening nut and the annular blocking part on the threaded connection part.

[0030] Compared with the prior art, the starting device of the present invention shortens the distance from the inner end of the starting claw to the hinge point by setting the hinge point of the starting claw close to the inner end of the starting claw, thereby greatly increasing the swing amplitude of the starting claw. As a result, the inner end of the starting claw can rotate around the hinge point at a larger angle, and the starting claw can be opened outward at a larger angle to cooperate with starting cups of various sizes, thereby greatly improving the applicability of the starting device.

[0031] In addition, by arranging a limit piece in the concave cavity, the limit piece limits the pulling angle of the pull rope and forms rolling friction between the pull rope and the limit piece when the pull rope is pulled, so that older users can also use the starting device conveniently, thereby greatly improving the applicability, being more universal and having higher practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of the starting device.

[0033] Figure 2 It is a schematic diagram of the starting device from another angle.

[0034] Figure 3 It is a longitudinal sectional view of the first embodiment of the starting device.

[0035] Figure 4 It is a schematic diagram of the boot disk in this boot device.

[0036] Figure 5 It is a schematic transverse cross-sectional view of the scroll spring in the starting device.

[0037] Figure 6 It is a schematic diagram of the shell in the starting device.

[0038] Figure 7 This is a schematic diagram of the starting device in Example 1 when the dustproof plate is not connected.

[0039] Figure 8 It is a schematic diagram between the limiting member and the disk body in the first embodiment.

[0040] Fig. 9 It is a longitudinal cross-sectional view of the limiting member in the first embodiment.

[0041] Fig.10 It is a transverse cross-sectional view of the limiting member in the first embodiment.

[0042] Fig.11 It is a schematic diagram of the starting claw and the claw seat in the starting device.

[0043] Fig.12 It is a bottom view when the starting claw is retracted into the receiving groove.

[0044] Fig.13 It is a bottom view when the starting claw extends out of the receiving groove.

[0045] In the figure, 1, housing; 1a, concave cavity; 1b, outlet hole; 1c, annular boss; 1c1, notch; 1d, through hole; 1e, annular mounting portion; 1e1, mounting hole; 2, starting disk; 2a, disk body; 2a1, annular groove; 2a2, annular flange; 2a21, notch; 2a3, clamping portion; 2a31, clamping groove; 2b, claw seat; 2b1, accommodating groove; 2b11, limiting side wall; 3, main shaft; 4, starting claw; 4a, limiting surface; 4b, arc-shaped concave surface; 5, scroll spring; 5a, outer hook section; 5b, inner hook section; 6, pull rope; 7, handle; 8, positioning plate; 9, positioning shaft; 9a, annular blocking portion; 9b, threaded connection portion; 10, limit piece; 11, fastening nut; 12, dustproof plate; 12a, positioning recessed hole; 13, fastener; 14, pin shaft; 15, cover; 15a, claw outlet; 16, friction plate; 17, locking nut; 18, support spring. DETAILED DESCRIPTION

[0046] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0047] Embodiment 1

[0048] like Figure 1-Figure 3 As shown, the starting device comprises a housing 1 provided with a concave cavity 1a and a starting disk 2 arranged in the concave cavity 1a, a main shaft 3 is fixed to the bottom wall of the concave cavity 1a, and the starting disk 2 is sleeved on the main shaft 3 and can rotate relative to the main shaft 3. Specifically, the starting disk 2 comprises a disk body 2a and a claw seat 2b protruding from the center of one end face of the disk body 2a, two receiving grooves 2b1 are arranged on the outer side of the end of the claw seat 2b, and the claw seat 2b is respectively hinged with a starting claw 4 in the two receiving grooves 2b1, and the starting claw 4 can swing relative to the starting disk 2. The housing 1 is provided with an outward annular mounting portion 1e at the end of the concave cavity 1a, and a plurality of mounting holes 1e1 are arranged on the annular mounting portion 1e.

[0049] like Figure 3 As shown, a spiral spring 5 is provided between the disc 2a and the housing 1, an annular groove 2a1 is provided on the outer circumference of the disc 2a, a pull rope 6 is provided in the annular groove 2a1 and is wound several times along the annular groove 2a1, one end of the pull rope 6 is fixed to the disc 2a, a wire outlet hole 1b is provided through the side of the housing 1, and the other end of the pull rope 6 passes through the housing 1 through the wire outlet hole 1b and is connected to a handle 7. An annular flange 2a2 is provided on the end surface of the disc 2a facing the bottom wall of the cavity 1a, the spiral spring 5 is provided in the annular flange 2a2, and the main shaft 3 passes through the inner side of the spiral spring 5.

[0050] like Figure 4 , Figure 5 and Figure 6 As shown, the side of the annular flange 2a2 is penetrated with a notch 2a21, and the outer end of the spiral spring 5 has an outer hook section 5a formed by bending in the opposite direction to the outer side of the spiral spring 5, and the outer hook section 5a is hooked on one of the side walls of the notch 2a21. The outer side of the annular flange 2a2 is provided with a clamping portion 2a3 at the opening, and the clamping portion 2a3 is provided with a clamping groove 2a31, and the notch 2a21 penetrates a side wall of the middle part of the clamping groove 2a31 and is connected with the clamping groove 2a31. The bottom wall of the concave cavity 1a is fixedly connected with a positioning piece 8, and the positioning piece 8 is in an arc shape and is arranged concentrically with the main shaft 3. The inner end of the spiral spring 5 has an inner hook section 5b formed by bending in the opposite direction to the inner side of the spiral spring 5, and the inner hook section 5b is hooked on the positioning piece 8.

[0051] In the prior art, the structure for accommodating the spiral spring 5 is directly set on the top wall of the concave cavity 1a of the housing 1, which results in the assembler being able to only wind the spiral spring 5 in the concave cavity 1a of the housing 1. However, due to the limitation of the inner wall of the concave cavity 1a, it is difficult for the assembler to flexibly operate in the concave cavity 1a, which makes the assembly very inconvenient. The present starting device is provided with an annular flange 2a2 with a notch 2a21 on one end face of the disk body 2a, so that the assembler can directly wind the spiral spring 5 on the disk body 2a. In this way, the limitation of the inner wall of the concave cavity 1a on the assembler's hands is eliminated, so that the assembler can operate very flexibly. At the same time, in this case, it can also ensure that some older users can disassemble and replace the spiral spring 5 without professional guidance.

[0052] In addition, in the present starting device, since the notch 2a21 is provided through the side of the annular flange 2a2, and the positioning piece 8 is in an arc shape and is provided coaxially with the main shaft 3, it means that the spiral spring 5 can be normally installed even if it is turned over. The installation of the spiral spring 5 turned over means the change of the rotation direction of the disk 2a and the elastic contraction direction, so that the outlet direction of the pull cord 6 can be changed (in terms of the outer peripheral surface of the housing 1, the pull cord 6 is divided into the outlet to the left or the outlet to the right), that is, after purchasing the present starting device, the user can meet the use of different directions of the pull cord 6, which greatly improves the applicability and meets the different usage needs of the user.

[0053] like Figure 6 , Figure 7 and Figure 8 As shown, a positioning shaft 9 is fixed in the concave cavity 1a, the positioning shaft 9 is parallel to the main shaft 3, and the positioning shaft 9 is arranged close to the disc body 2a. A rotatable stopper 10 is arranged on the positioning shaft 9, and the outer side surface of the stopper 10 presses on the pull rope 6 to bend the pull rope 6. In this embodiment, an annular boss 1c is arranged on the inner peripheral wall of the concave cavity 1a, the disc body 2a is located on the inner side of the annular boss 1c, and the outer diameter of the disc body 2a is slightly smaller than the inner diameter of the center hole of the annular boss 1c. A notch 1c1 is arranged on the inner side wall of the annular boss 1c, and the inner end opening of the outlet hole 1b is located on the inner wall of the notch 1c1, and the stopper 10 is located in the notch 1c1.

[0054] like Figure 6 , Figure 8 and Fig. 9As shown, the bottom wall of the cavity 1a is penetrated with a through hole 1d, one end of the positioning shaft 9 is a threaded connection part 9b and an annular blocking part 9a is provided on the outer side of the end of the positioning shaft 9, the threaded connection part 9b passes through the shell 1 through the through hole 1d, and a fastening nut 11 is threadedly connected to the threaded connection part 9b passing through the shell 1, and one end face of the annular blocking part 9a abuts against the bottom wall of the cavity 1a. The limiting member 10 is specifically a hollow cylinder sleeved on the positioning shaft 9, the limiting member 10 and the positioning shaft 9 are axially limited, and the pull rope 6 contacts the outer peripheral surface of the limiting member 10.

[0055] like Figure 2 , Figure 3 , Figure 8 and Fig. 9 As shown, a dustproof plate 12 is fixed in the cavity 1a to block the disc body 2a on the inner side of the annular boss 1c. The dustproof plate 12 is fixed by a fastener 13 that passes through the dustproof plate 12 and penetrates into the annular boss 1c, and the claw seat 2b extends out of the dustproof plate 12. A positioning recessed hole 12a is provided on the surface of the dustproof plate 12 facing the disc body 2a, and the other end of the positioning shaft 9 is inserted into the positioning recessed hole 12a. The limiting member 10 is axially limited between the other end surface of the annular blocking portion 9a and the surface where the positioning recessed hole 12a is located.

[0056] like Figure 3 and Fig.11 As shown, a stop cover 15 is provided at the end of the claw seat 2b, the main shaft 3 passes through the center of the stop cover 15, a friction plate 16 is also sleeved on the main shaft 3, a locking nut 17 is threadedly connected to the end of the main shaft 3, the friction plate 16 abuts against the locking nut 17, and a support spring 18 is sleeved on the main shaft 3, one end of the support spring 18 abuts on the main shaft 3, and the other end of the support spring 18 abuts on the stop cover 15 and makes the stop cover 15 abut against the friction plate 16. Two claw outlets 15a are provided through the side of the stop cover 15, and the outer ends of the two starting claws 4 are located in the corresponding claw outlets 15a. When the claw seat 2b rotates, the starting claw 4 can abut against one side wall of the claw outlet 15a to open outwards, or the starting claw 4 can abut against the other side wall of the claw outlet 15a to retract into the accommodating groove 2b1.

[0057] like Fig.11 and Fig.12As shown, in this embodiment, the two starting claws 4 are of the same size and are flat and long strips. The width of the starting claw 4 gradually increases from the outer end to the inner end. The two receiving grooves 2b1 are respectively fixed with pins 14 parallel to the main shaft 3. The two starting claws 4 are sleeved on the corresponding pins 14 to form a hinged relationship with the claw seat 2b. The two receiving grooves 2b1 are two symmetrically distributed arc grooves. The two starting claws 4 are arranged in opposite directions. The hinge point of the starting claw 4 is located at a position close to the inner end of the starting claw 4, and the starting claw 4 is eccentrically arranged in the receiving groove 2b1. The claw seat 2b located between the two receiving grooves 2b1 is a symmetrical structure. The symmetrical structure has a symmetry line that can divide the same receiving groove 2b1 into two symmetrical semi-circular arc grooves. The angle between the line connecting the hinge point of the starting claw 4 and the rotation center of the disk body 2a and the symmetry line is 15° to 20°, and the opening angle of the starting claw 4 is 50° to 55°.

[0058] like Fig.12 and Fig.13 As shown, the receiving groove 2b1 has a limiting side wall 2b11 corresponding to the center direction of the start disk 2. When the start claw 4 swings away from the center of the start disk 2, the inner end of the start claw 4 can abut against the limiting side wall 2b11 to prevent the start claw 4 from continuing to swing outward. Specifically, the inner end of the start claw 4 is provided with a limiting surface 4a.

[0059] The limiting surface 4a is an inwardly concave arc surface, and the limiting side wall 2b11 is an outwardly convex arc surface, which can increase the engagement area between the starting claw 4 and the claw seat 2b. The starting claw 4 is provided with an arc-shaped concave surface 4b1 on one side close to the center direction of the starting disk 2, and the arc-shaped concave surface 4b is connected to the limiting surface 4a and there is an arc transition between the two.

[0060] When in use, the shell 1 is fixed to the engine casing by screws passing through the mounting hole 1e1, and ensure that the claw seat 2b is located in the starting cup of the engine. When the engine needs to be started, the user pulls the pull rope 6 to drive the disk body 2a to rotate so that the spiral spring 5 can accumulate force. When the pull rope 6 drives the disk body 2a to rotate, the claw seat 2b rotates synchronously with the disk body 2a, and the baffle cover 15 contacts the friction plate 16 under the elastic force of the support spring 18. The friction force causes the baffle cover 15 to remain stationary, and at this time, the outer end of the starting claw 4 moves along the corresponding claw outlet 15a on the baffle cover 15. When the disk body 2a rotates until the outer end of the starting claw 4 abuts against a side wall of the claw outlet 15a, the baffle cover 15 will form resistance to the rotation of the starting claw 4, so that the starting claw 4 swings in the opposite direction around the hinge point and opens outward, such as Fig.11 As shown, the limiting surface 4a at the inner end of the starting claw 4 abuts against the groove wall 2b12 in the corresponding accommodating groove 2b1, and the outer end of the starting claw 4 extends into the corresponding hole on the starting cup.

[0061] After the spiral spring 5 has accumulated power, the user releases the pull rope 6, so that the elastic force of the spiral spring 5 will be released instantly to drive the disc body 2a to reverse at high speed in a short time. Since the starting claw 4 has been extended into the hole corresponding to the starting cup, the starting claw 4 is connected to the claw seat 2b through the limiting surface 4a as a whole, so that when the starting claw 4 reverses, it abuts against the side wall of the hole corresponding to the starting cup, causing the starting cup to rotate at high speed, thereby finally starting the engine. In the process of the claw seat 2b driving the starting claw 4 to rotate in the opposite direction, the starting claw 4 moves along the claw outlet 15a until it abuts against the other side wall of the claw outlet 15a, and the blocking cover 15 again forms resistance to the rotation of the starting claw 4, so that the starting claw 4 swings in the opposite direction around the hinge point and retracts into the receiving groove 2b1, so that the starting claw 4 is separated from the starting cup.

[0062] To this end, the present starting device hinges the inner end of the starting claw 4 with the starting disk 2, and the hinge point of the starting claw 4 is eccentrically set in the corresponding receiving groove 2b1, so that the distance from the inner end of the starting claw 4 to the hinge point can be shortened, so that the limiting surface 4a of the inner side of the starting claw 4 can smoothly swing from the state opposite to the groove wall 1 2b11 to the state against the groove wall 2b12, which greatly increases the swing amplitude of the starting claw 4, so that the inner end of the starting claw 4 can rotate around the hinge point to a larger angle, and the starting claw 4 can be opened outward at a larger angle. The size of the self-contained starting cup is different due to the different engine power or model. Since the starting claw 4 can be opened outward at a larger angle, the present starting device can cooperate with starting cups of various sizes, thereby greatly improving the applicability of the present starting device.

[0063] In addition, during actual use, since the pull cord 6 is relatively long, when the user pulls the pull cord 6, it is easy for the pull cord 6 to get stuck in the housing 1 or become difficult to pull due to angle problems, which is very inconvenient for some older users. For this reason, a limiter 10 is provided on the positioning shaft 9 near the starting claw 4 assembly in the concave cavity 1a, and the outer side surface of the limiter 10 is pressed on the pull cord 6 to limit the pulling angle of the pull cord 6, thereby ensuring that the pull cord 6 can be pulled out stably; at the same time, since the limiter 10 can rotate, when the pull cord 6 is pulled, the limiter 10 will rotate under the action of friction, so that rolling friction will be formed between the pull cord 6 and the limiter 10, thereby greatly reducing the resistance of the limiter 10 to the pull cord 6 and reducing the wear of the pull cord 6. By limiting the pulling angle of the pull rope 6 by the limiter 10 and forming rolling friction between the pull rope 6 and the limiter 10 when the pull rope 6 is pulled, older users can also use the starting device conveniently, thereby greatly improving the applicability, being more universal and having higher practical value.

[0064] Embodiment 2

[0065] The structure and principle of this embodiment are basically the same as those of the first embodiment, except that: in this embodiment, the limiting member 10 is a roller sleeved on the positioning shaft 9, a support bearing is provided between the roller and the positioning shaft 9, and an annular limiting groove is provided on the outer peripheral surface of the roller, and the pull rope 6 passes through the annular limiting groove.

[0066] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A starting device, comprising a housing (1) provided with a concave cavity (1a) and a starting disk (2) provided in the concave cavity (1a) and capable of rotating, wherein the starting disk (2) is symmetrically provided with at least two receiving grooves (2b1), each receiving groove (2b1) is hinged with a starting claw (4), and the starting claw (4) is capable of swinging relative to the starting disk (2), characterized in that: The hinge point of the starting claw (4) is located at an inner end position close to the starting claw (4), and the accommodating groove (2b1) has a limiting side wall (2b11) corresponding to the center direction of the starting disk (2). When the starting claw (4) swings in a direction away from the center of the starting disk (2), the inner end of the starting claw (4) can abut against the above-mentioned limiting side wall (2b11) to prevent the starting claw (4) from continuing to swing outward; the outer peripheral surface of the starting disk (2) is provided with a pull rope (6) wound in a plurality of circles, the inner end of the pull rope (6) is fixedly connected to the starting disk (2), the outer end of the pull rope (6) passes through the outside of the shell (1), and a rotatable limiting member (10) is provided inside the shell (1), the outer side surface of the limiting member (10) presses on the pull rope (6) to bend the pull rope (6), and the inner surface of the shell (1) is close to the pull rope (6). A positioning shaft (9) is fixed near the starting disk (2), and a limiting member (10) is sleeved on the positioning shaft (9). The starting disk (2) comprises a disk body (2a) and a claw seat (2b) protruding from the center of one end face of the disk body (2a). The limiting member (10) is located in the concave cavity (1a). A dustproof plate (12) is fixed in the shell (1) to block the disk body (2a) and the limiting member (10) in the shell (1). The claw seat (2b) extends out of the dustproof plate (12). An annular blocking portion (9a) is provided on the outer side of one end of the positioning shaft (9). A positioning concave hole (12a) is provided on the dustproof plate (12). The other end of the positioning shaft (9) is inserted into the positioning concave hole (12a). The limiting member (10) is axially positioned between one end face of the annular blocking portion (9a) and a surface where a port of the positioning concave hole (12a) is located.

2. The starting device according to claim 1, characterized in that: The limiting side wall (2b11) is an outwardly convex arc surface, and a circular arc recessed surface (4b) is provided on one side of the starting claw (4) close to the center direction of the starting disk (2).

3. The starting device according to claim 2, characterized in that: The inner end of the starting claw (4) is provided with a limiting surface (4a), which is a concave arc surface. When the starting claw (4) swings in a direction away from the center of the starting disk (2), the limiting surface (4a) abuts against the limiting side wall (2b11).

4. The starting device according to claim 1, 2 or 3, characterized in that: The hinge point of the starting claw (4) is eccentrically arranged in the accommodating groove (2b1).

5. The starting device according to claim 1, characterized in that: A positioning shaft (9) is fixed in the housing (1) near the starting disk (2), the limiting member (10) is a hollow cylinder sleeved on the positioning shaft (9), the pull rope (6) is in contact with the outer peripheral surface of the limiting member (10), or the limiting member (10) is a roller, a support bearing is provided between the roller and the positioning shaft (9), an annular limiting groove is provided on the outer peripheral surface of the roller, and the pull rope (6) passes through the annular limiting groove.

6. The starting device according to claim 5, characterized in that: An annular boss (1c) is provided on the inner peripheral wall of the concave cavity (1a); the disc body (2a) and the limiting member (10) are both located in the central hole of the annular boss (1c); and the dustproof plate (12) is fixed to the end surface of the annular boss (1c).

7. The starting device according to claim 6, characterized in that: The outer diameter of the disk body (2a) is slightly smaller than the inner diameter of the center hole of the annular boss (1c); the inner side wall of the annular boss (1c) is provided with a notch (1c1); a wire outlet hole (1b) is provided through the side of the housing (1); the inner end opening of the wire outlet hole (1b) is located on the inner wall of the notch (1c1); and the stopper (10) is located in the notch (1c1).

8. The starting device according to claim 7, characterized in that: The bottom wall of the concave cavity (1a) is penetrated by a through hole (1d); the positioning shaft (9) is provided with an annular blocking portion (9a) and one end of the annular blocking portion (9a) is a threaded connection portion (9b); the threaded connection portion (9b) passes through the through hole (1d) and is outside the shell (1); a fastening nut (11) is threadedly connected to the threaded connection portion (9b) passing through the shell (1); and one end surface of the annular blocking portion (9a) is in contact with the bottom wall of the concave cavity (1a).

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