CN210370989U - Starting device - Google Patents

Abstract

The utility model provides a starting drive belongs to engine technical field. The method solves the problems of wider applicability and higher practical value. This starting drive includes the casing and locates in the casing and can the pivoted start-up dish, the symmetry is equipped with two at least holding tanks on the start-up dish, it has the start claw all to articulate in every holding tank, start the claw and can be for starting the dish swing, the pin joint of start claw is in on being close to the inner position of start claw, the holding tank has one and is corresponding to the spacing lateral wall that starts the dish center direction, start claw inner can support to lean on in spacing lateral wall in order to block start claw continuation outside wobbling trend after the direction swing of keeping away from start-up dish center when starting the claw. The starting device has the advantages of better applicability, more universality and higher practical value.

Description

Starting device

Technical Field

The utility model belongs to the technical field of the engine, a starting drive is related to, especially, relate to a hand power starting drive.

Background

With the continuous development of economy, the degree of agricultural mechanization is higher and higher, and agricultural cultivators are more and more commonly used, and the power source of the agricultural cultivators is a diesel engine or a gasoline engine, and before the agricultural cultivators work, the agricultural cultivators can be in a running state by means of a set of auxiliary starting equipment, namely a so-called starter.

Common starters are divided into a hand-operated starter and a hand-operated starter, wherein the hand-operated starter has a relatively stable market due to a relatively simple structure and a relatively low cost, compared with the hand-operated starter. The present manual starter includes a fixing cover with a notch and a starting disc set inside the notch, the notch has a central shaft and a coil spring slot, the starting disc is sleeved on the central shaft and can rotate around the central shaft, the coil spring slot has a coil spring with one end fixed on the side wall of the coil spring slot and the other end fixed on the starting disc, the starting disc has a ring-shaped groove, the ring-shaped groove has a starting rope, the outer end of the starting rope passes through the edge of the fixing cover, the outer end of the starting disc is provided with mounting slots at intervals, and the mounting slots are hinged with starting claws. When the engine is operated, the starting rope is pulled to enable the starting disc to rotate around the central shaft, the coil spring is wound to store power in the rotating process, and meanwhile, the starting claw swings around a hinge point to be outwards opened and inserted into a hole corresponding to a starting cup on the engine; when the starting rope is loosened, the starting disc reversely rotates around the central shaft at a high speed under the elastic force released by the coil spring, so that the starting disc can drive the starting cup to rotate at a high speed to start the engine.

However, the above-mentioned hand-pull starting device also has some disadvantages: the hinged point of the starting claw is arranged in the middle and is positioned in the middle of the mounting groove, so that the amplitude of the swinging of the starting claw around the hinged point is very small, the starting claw can be opened at a small angle, but the size of the starting cup of each agricultural equipment is different due to different power of the engine or different gasoline and diesel oil, and the hand-pull starting device can only be matched with the engine with a characteristic model and cannot be used universally, so that the applicability is lower. In order to make the hand-pulling starting device suitable, the skilled person would easily think that the starting claw is made as large as possible to increase the distance that the starting claw extends out of the mounting groove, but this will certainly increase the overall volume of the whole starting device and is not practical enough.

Disclosure of Invention

The utility model aims at the above-mentioned problem that prior art exists, provide a starting drive, the technical problem that solve makes the suitability wider, practical value higher.

The purpose of the utility model can be realized by the following technical proposal:

the starting device comprises a shell and a starting disc which is arranged in the shell and can rotate, wherein at least two containing grooves are symmetrically formed in the starting disc, a starting claw is hinged in each containing groove and can swing relative to the starting disc, and the starting device is characterized in that the hinge point of the starting claw is positioned at the inner end position close to the starting claw, the containing grooves are provided with a limiting side wall corresponding to the center direction of the starting disc, and after the starting claw swings towards the direction far away from the center of the starting disc, the inner end of the starting claw can abut against the limiting side wall to block the starting claw from continuing swinging outwards.

The shell of the starting device is fixed on the shell of the engine, the starting claw is positioned in the starting cup on the engine, and when the starting disc rotates, the starting claw can swing towards the direction far away from the center of the starting disc relative to the starting disc, so that the outer end of the starting disc extends out of the accommodating groove and can be inserted into the corresponding hole on the starting cup. When the inner end of the starting claw is abutted against the limiting side wall, the starting claw is blocked to stop continuously swinging outwards, and the swinging state of the starting claw is supported by abutting the inner end of the starting claw against the limiting side wall, so that the outer end of the starting claw is ensured to be inserted into a corresponding hole on the starting cup and combined with the starting cup to realize the starting of the engine.

The starting device is characterized in that the hinge point of the starting claw is arranged to be at the position close to the inner end of the starting claw, so that the distance from the inner end part of the starting claw to the hinge point can be shortened, the swing amplitude of the starting claw is greatly increased, the starting claw can be opened outwards by a larger angle, and the starting claw can be maintained in a large-angle opening state by utilizing the matching of the limiting side wall and the inner end of the starting claw. The size that the difference of engine power leads to starting cup also is different, because the starting claw can outwards open bigger angle, consequently makes this starting drive and the starting cup homoenergetic of various sizes cooperate, has improved this starting drive's suitability from this well.

In the starting device, the limiting side wall is an outward convex arc surface, and an arc abdicating concave surface is arranged on one side of the starting claw close to the center direction of the starting disc.

The hinge point of the starting claw is positioned at the inner end position close to the starting claw so that the starting claw can be opened to a larger extent, and then when the starting claw swings back, one side of the starting claw close to the center direction of the starting disc is easy to interfere with the limiting groove wall. Therefore, an arc abdicating concave surface is arranged on one side of the starting claw close to the center direction of the starting disc, the arc abdicating concave surface can abdicating the interference position between the limiting groove wall and the starting claw, so that the starting claw can be maximally retracted into the accommodating groove to be smoothly separated from the starting cup, and the starting claw can be opened to improve the applicability and ensure the reliability of the structure.

In the starting device, the inner end of the starting claw is provided with a limiting surface which is an inwards concave arc surface, and the limiting surface abuts against the limiting side wall after the starting claw swings towards the direction far away from the center of the starting disc.

The inner end of the starting claw is provided with a limiting surface which is an inwards concave limiting surface, and the limiting surface is attached to the limiting side wall after the starting claw swings towards the direction far away from the center of the starting disc, so that the starting claw cannot swing continuously, and meanwhile, the starting claw and the starting disc can be connected more tightly to form a whole so as to drive the starting cup of the engine to rotate at a high speed.

In the above actuating device, the hinge point of the actuating pawl is eccentrically arranged in the accommodating groove.

The pin joint of starting claw eccentric settings is in the holding tank, and starting claw can set up comparatively long like this, can stretch out the holding tank after starting claw swing more outside, also can increase this starting drive's commonality to a certain extent like this.

In the above-described starting apparatus, the opening angle of the starting claw is 50 ° to 55 °.

In the starting device, the outer peripheral surface of the starting disc is provided with the pull rope wound into a plurality of circles, the inner end of the pull rope is fixedly connected with the starting disc, the outer end of the pull rope penetrates out of the shell, the shell is internally provided with a rotatable limiting part, and the outer side surface of the limiting part pushes against the pull rope to bend the pull rope.

This starting drive is hand-pulling type, and the user passes through the outer end pulling of stay cord and starts the dish rotation for start the claw and stretch out the holding tank outside and insert the engine and start the downthehole that corresponds on the cup.

Because the stay cord is longer, appear very easily when the user pulls the stay cord because of the angle problem the stay cord appears and is blocked or the circumstances of pulling the difficulty in the casing, it is very inconvenient to use to some older users. Therefore, a limiting piece is arranged in the shell, the pulling angle of the pulling rope can be limited by pressing the outer side surface of the limiting piece on the pulling rope, and the pulling rope can be stably pulled out; meanwhile, the limiting piece can rotate, and when the pull rope is pulled, the limiting piece can rotate under the action of friction force, so that rolling friction is formed between the pull rope and the limiting piece, the resistance of the limiting piece to the pull rope is greatly reduced, and the abrasion of the pull rope is reduced. Through the limiting of the limiting part on the pulling angle of the pulling rope and the rolling friction formed between the pulling angle of the pulling rope and the limiting part, a user with a relatively old age can also conveniently use the starting device, so that the applicability is well improved, and the starting device is more universal and has higher practical value.

In the starting device, a positioning shaft is fixed in the shell near the starting disc, the limiting part is a hollow cylinder sleeved on the positioning shaft, the pull rope is in contact with the outer peripheral surface of the limiting part, or the limiting part is a roller, a support bearing is arranged between the roller and the positioning shaft, the outer peripheral surface of the roller is provided with an annular limiting groove, and the pull rope passes through the annular limiting groove.

When a user pulls the pull rope, the friction force between the pull rope and the hollow cylinder/roller can conveniently enable the hollow cylinder/roller to rotate, so that rolling friction is formed between the pull rope and the limiting piece, and the resistance to the pull rope caused by the fact that the limiting piece is arranged to press the pull rope is greatly reduced.

In the starting device, the shell is provided with a cavity, the inner peripheral wall of the cavity is provided with an annular boss, the starting disc comprises a disc body and a claw seat protruding out of the center of one end face of the disc body, the disc body and the limiting part are both positioned in a central hole of the annular boss, the end face of the annular boss is fixed with a dust guard separating the disc body and the limiting part in the central hole of the annular boss, and the claw seat extends out of the dust guard.

The dust guard has played dustproof effect with disk body and locating part separation in the centre bore of annular boss, can prevent when using in the paddy field environment that splash water or silt from getting into the cavity and the card is between stay cord and locating part, has guaranteed to form rolling friction steadily between stay cord and the locating part and has reduced the resistance when pulling the stay cord.

In the starting device, the outer diameter of the disk body is slightly smaller than the inner diameter of the central hole of the annular boss, the inner side wall of the annular boss is provided with a notch, the side part of the shell is provided with a wire outlet hole in a penetrating manner, the inner end hole of the wire outlet hole is positioned on the inner wall of the notch, and the limiting part is positioned in the notch. The inside wall of annular boss sets up the notch, and the locating part setting has avoided the interference to the disk body in the notch, has guaranteed the reliability of structure.

In the starting device, the outer side of one end of the positioning shaft is provided with the annular blocking part, the dust guard is provided with the positioning concave hole, the other end of the positioning shaft is inserted into the positioning concave hole, and the limiting part is axially positioned between one end face of the annular blocking part and the surface where the port of the positioning concave hole is located.

When the dust guard was fixed in the cavity, the one end of location axle can insert the location concave hole on the dust guard in, because the other end outside of location axle is provided with annular barrier portion, just can form the restriction to the locating part between the face at an annular barrier portion terminal surface and location concave hole port place to make locating part and location axle can follow axial positioning, the locating part just can only rotate and can not receive extra resistance when ensureing that the stay cord stimulates.

In the starting device, the bottom wall of the cavity is provided with a through hole in a penetrating manner, the end, provided with the annular blocking part, of the positioning shaft is a threaded connecting part, the threaded connecting part penetrates out of the shell through the through hole, the threaded connecting part penetrating out of the shell is connected with a fastening nut in a threaded manner, and one end face of the annular blocking part abuts against the bottom wall of the cavity.

During the assembly, the threaded connection part of the positioning shaft penetrates out of the shell from the through hole, then the fastening nut is in threaded connection with the threaded connection part, and the positioning shaft and the shell can be fixed together through the fastening nut and the annular blocking part on the threaded connection part.

Compared with the prior art, the starting device has the advantages that the hinge point of the starting claw is arranged at the inner end position close to the starting claw, the distance from the inner end part of the starting claw to the hinge point is shortened, the swinging amplitude of the starting claw is greatly increased, so that the inner end of the starting claw can rotate by a larger angle around the hinge point, the starting claw can be outwards opened by a larger angle to be matched with starting cups of various sizes, and the applicability of the starting device is well improved.

In addition, through set up the locating part in the cavity, the locating part forms rolling friction to the restriction of stay cord pulling angle and between the stay cord and the locating part when pulling for older user also can conveniently use starting drive, has improved the suitability from this well, and is more general, practical value is higher.

Drawings

Fig. 1 is a schematic view of the present starting apparatus.

Fig. 2 is another angle schematic diagram of the present starting apparatus.

Fig. 3 is a longitudinal sectional view of the first embodiment of the starting apparatus.

Fig. 4 is a schematic view of the start disc in the present starting apparatus.

Fig. 5 is a cross-sectional view of the present starting device at the position of the spiral spring.

Figure 6 is a schematic view of the housing of the present starting device.

FIG. 7 is a schematic view illustrating the starting apparatus according to the first embodiment without a dust guard attached thereto.

Fig. 8 is a schematic view illustrating a position between the limiting member and the disc according to an embodiment.

FIG. 9 is a longitudinal cross-sectional view of a limiter according to an embodiment.

FIG. 10 is a transverse cross-sectional view of a limiter according to one embodiment.

Fig. 11 is a schematic view of the actuating pawl and pawl seat of the actuating device.

Fig. 12 is a bottom view of the actuating pawl retracted within the receiving slot.

Fig. 13 is a bottom view of the actuating pawl extending out of the receiving slot.

In the figure, 1, a housing; 1a, a concave cavity; 1b, wire outlet holes; 1c, an annular boss; 1c1, notch; 1d, through holes; 1e, an annular mounting portion; 1e1, mounting hole; 2. starting a disc; 2a, a tray body; 2a1, annular groove; 2a2, annular flange; 2a21, notch; 2a3, a snap-in part; 2a31, a clamping groove; 2b, claw seats; 2b1, accommodating groove; 2b11, limiting side walls; 3. a main shaft; 4. starting a claw; 4a, a limiting surface; 4b, a circular arc abdicating concave surface; 5. a volute spiral spring; 5a, an outer hook section; 5b, an inner hook section; 6. pulling a rope; 7. a handle; 8. positioning plates; 9. positioning the shaft; 9a, an annular blocking part; 9b, a threaded connection; 10. a limiting member; 11. fastening a nut; 12. a dust-proof plate; 12a, positioning concave holes; 13. a fastener; 14. a pin shaft; 15. a blocking cover; 15a, a claw outlet; 16. a friction plate; 17. locking the nut; 18. supporting the spring.

Detailed Description

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

Example one

As shown in fig. 1-3, the starting device includes a housing 1 having a cavity 1a, and a starting disc 2 disposed in the cavity 1a, a spindle 3 is fixed to a bottom wall of the cavity 1a, and the starting disc 2 is sleeved on the spindle 3 and can rotate relative to the spindle 3. Specifically, the starting tray 2 includes a tray body 2a and a claw seat 2b protruding from the center of one end surface of the tray body 2a, two receiving grooves 2b1 are formed on the outer side of the end portion of the claw seat 2b, the claw seat 2b is hinged to a starting claw 4 in the two receiving grooves 2b1, and the starting claw 4 can swing relative to the starting tray 2. The casing 1 is provided with an outward annular mounting part 1e at a port of the cavity 1a, and the annular mounting part 1e is provided with a plurality of mounting holes 1e 1.

As shown in fig. 3, a volute spiral spring 5 is disposed between the disc 2a and the housing 1, an annular groove 2a1 is disposed on the outer circumferential surface of the disc 2a, a pull rope 6 wound around the annular groove 2a1 for a plurality of turns is disposed in the annular groove 2a1, one end of the pull rope 6 is fixed to the disc 2a, a wire outlet 1b is disposed through the side of the housing 1, and the other end of the pull rope 6 penetrates through the wire outlet 1b and is connected to a handle 7. An annular flange 2a2 is provided on the end surface of the disk body 2a facing the bottom wall of the recess 1a, a scroll spring 5 is provided in the annular flange 2a2, and the main shaft 3 passes through the inside of the scroll spring 5.

As shown in fig. 4, 5 and 6, a notch 2a21 is formed through a side portion of the annular flange 2a2, an outer end portion of the spiral spring 5 has an outer hook section 5a bent in a reverse direction to an outer side of the spiral spring 5, and the outer hook section 5a is hooked on one side wall of the notch 2a 21. The outer side of the annular flange 2a2 is provided with a clamping part 2a3 at the opening, the clamping part 2a3 is provided with a clamping groove 2a31, and the notch 2a21 penetrates through one side wall of the middle part of the clamping groove 2a31 and is communicated with the clamping groove 2a 31. The bottom wall of the concave cavity 1a is fixedly connected with a positioning sheet 8, and the positioning sheet 8 is arc-shaped and concentric with the main shaft 3. The inner end of the spiral spring 5 has an inner hook section 5b formed by bending the spiral spring 5 in the opposite direction, and the inner hook section 5b is hooked on the positioning piece 8.

In the prior art, the structure for accommodating the scroll spring 5 is directly arranged on the top wall of the cavity 1a of the housing 1, which causes that an assembler can only wind the scroll spring 5 in the cavity 1a of the housing 1, but the limitation of the inner wall of the cavity 1a makes the hand of the assembler difficult to flexibly operate in the cavity 1a, thereby causing that the assembly is very inconvenient. This starting drive sets up the annular flange 2a2 of taking breach 2a21 at one end of disk body 2a for the assembler can directly convolute volute spiral spring 5 on disk body 2a, so just break away from the restriction of cavity 1a inner wall to assembler's both hands, make the assembler can operate very nimble, also can guarantee under this condition that some older users can carry out volute spiral spring 5's dismantlement and change under the condition of no professional guidance simultaneously.

In the present starting device, the notch 2a21 is provided through the side of the annular flange 2a2, and the positioning piece 8 is provided in the shape of an arc and coaxially with the main shaft 3, which means that the scroll spring 5 can be normally mounted even when it is turned upside down. The scroll spring 5 is turned over and installed to mean the change of the rotation direction of the disk body 2a and the elastic force contraction direction, so that the wire outlet direction of the pull rope 6 can be changed (with the peripheral surface of the shell 1, the pull rope 6 is divided into wire outlet towards the left or wire outlet towards the right), that is, the user can satisfy the use in different directions of the pull rope 6 by purchasing the starting device, the applicability is well improved, and different use requirements of the user are satisfied.

As shown in fig. 6, 7 and 8, a positioning shaft 9 is fixed in the cavity 1a, the positioning shaft 9 is parallel to the main shaft 3, the positioning shaft 9 is disposed near the disc body 2a, a rotatable limiting member 10 is disposed on the positioning shaft 9, and an outer side surface of the limiting member 10 presses against the pull rope 6 to bend the pull rope 6. In this embodiment, the inner peripheral wall of the cavity 1a is provided with an annular boss 1c, the disk body 2a is located inside the annular boss 1c, the outer diameter of the disk body 2a is slightly smaller than the inner diameter of the central hole of the annular boss 1c, the inner side wall of the annular boss 1c is provided with a notch 1c1, the inner end opening of the wire outlet 1b is located on the inner wall of the notch 1c1, and the limiting member 10 is located in the notch 1c 1.

As shown in fig. 6, 8 and 9, a through hole 1d is formed through the bottom wall of the cavity 1a, one end of the positioning shaft 9 is a threaded connection portion 9b, an annular blocking portion 9a is arranged outside the end of the positioning shaft 9, the threaded connection portion 9b penetrates through the shell 1 through the through hole 1d, a fastening nut 11 is connected to the threaded connection portion 9b penetrating through the shell 1 in a threaded manner, and one end face of the annular blocking portion 9a abuts against the bottom wall of the cavity 1 a. The limiting part 10 is specifically a hollow cylinder sleeved on the positioning shaft 9, the limiting part 10 and the positioning shaft 9 are limited along the axial direction, and the pull rope 6 is in contact with the outer peripheral surface of the limiting part 10.

As shown in fig. 2, 3, 8 and 9, a dust-proof plate 12 for blocking the disc body 2a inside the annular boss 1c is fixed in the cavity 1a, the dust-proof plate 12 is fixed by a fastener 13 penetrating through the dust-proof plate 12 and penetrating into the annular boss 1c, and the claw seat 2b extends out of the dust-proof plate 12. The dust-proof plate 12 is provided with a positioning concave hole 12a on the surface facing the disc body 2a, the other end of the positioning shaft 9 is inserted into the positioning concave hole 12a, and the limiting piece 10 is axially limited between the other end surface of the annular blocking part 9a and the surface where the positioning concave hole 12a is located.

As shown in fig. 3 and 11, a blocking cover 15 is arranged outside the end portion of the claw seat 2b, the main shaft 3 penetrates through the center of the blocking cover 15, a friction plate 16 is further sleeved on the main shaft 3, a locking nut 17 is connected to the end portion of the main shaft 3 in a threaded manner, the friction plate 16 abuts against the locking nut 17, a supporting spring 18 is sleeved on the main shaft 3, one end of the supporting spring 18 abuts against the main shaft 3, and the other end of the supporting spring 18 abuts against the blocking cover 15 and enables the blocking cover 15 to abut against the friction plate 16. Two claw outlets 15a are penetratingly arranged on the side portion of the blocking cover 15, the outer ends of the two actuating claws 4 are located in the corresponding claw outlets 15a, and when the claw seat 2b rotates, the actuating claws 4 can abut against one side wall of the claw outlets 15a to be outwardly opened or the actuating claws 4 abut against the other side wall of the claw outlets 15a to be retracted into the accommodating grooves 2b 1.

As shown in fig. 11 and 12, in the present embodiment, the two actuating claws 4 have the same shape and size and are in a flat and long shape, the width of the actuating claw 4 gradually increases from the outer end to the inner end, the two accommodating grooves 2b1 are respectively fixed with a pin 14 parallel to the main shaft 3, and the two actuating claws 4 are both sleeved on the corresponding pin 14 and form a hinged relationship with the claw seat 2 b. Two holding tank 2b1 are two circular arc grooves of symmetric distribution, and two start claw 4 reverse settings, start claw 4's pin joint and be in the inner position that is close to start claw 4, and start claw 4 eccentric settings in holding tank 2b 1. The claw seat 2b between the two holding grooves 2b1 is a symmetrical structure, the symmetrical structure has a symmetrical line which can divide the same holding groove 2b1 into two symmetrical semi-arc grooves, the included angle between the connecting line of the hinge point of the starting claw 4 and the rotation center of the disk body 2a and the symmetrical line is 15-20 degrees, and the opening angle of the starting claw 4 is 50-55 degrees.

As shown in fig. 12 and 13, the receiving groove 2b1 has a limiting side wall 2b11 corresponding to the direction of the center of the actuating plate 2, and the inner end of the actuating pawl 4 can abut against the limiting side wall 2b11 to block the actuating pawl 4 from further swinging outwards after the actuating pawl 4 swings away from the center of the actuating plate 2. Specifically, the inner end of the starting claw 4 is provided with a limiting surface 4a, the limiting surface 4a is an inward concave arc surface, and the limiting side wall 2b11 is an outward convex arc surface, so that the combination area between the starting claw 4 and the claw seat 2b can be increased. One side of the starting claw 4 close to the center direction of the starting disc 2 is provided with an arc abdicating concave surface 4b1, and the arc abdicating concave surface 4b is connected with the limiting surface 4a and is in arc transition between the two.

In use, the housing 1 is screwed through the mounting hole 1e1 to the engine casing and the claw seat 2b is secured in the starting cup of the engine. When the engine needs to be started, a user pulls the pull rope 6 to drive the disc body 2a to rotate so as to enable the scroll spring 5 to accumulate force. When the pulling rope 6 drives the disc body 2a to rotate, the claw seat 2b synchronously rotates along with the disc body 2a, the blocking cover 15 is contacted with the friction plate 16 under the elastic force action of the supporting spring 18, the blocking cover 15 keeps static under the action of the friction force, and the outer end of the starting claw 4 moves along the corresponding claw outlet 15a on the blocking cover 15 at the moment. When the tray body 2a rotates until the outer end of the actuating claw 4 abuts against one side wall of the claw outlet 15a, the blocking cover 15 will form resistance to the rotation of the actuating claw 4, so that the actuating claw 4 swings reversely around the hinge point to open outwards, as shown in fig. 11, the limiting surface 4a at the inner end of the actuating claw 4 abuts against the groove wall two 2b12 in the corresponding accommodating groove 2b1, and the outer end of the actuating claw 4 extends into the corresponding hole on the actuating cup.

After the scroll spring 5 finishes storing the power, the user loosens the stay cord 6, and the elasticity of scroll spring 5 will release in the twinkling of an eye like this and drive disk body 2a and carry out high-speed reversal in the short time, because start claw 4 has stretched into the corresponding hole of start-up cup, start claw 4 pastes with claw seat 2b through spacing face 4a and pastes and connects as an organic whole to it leans on with the lateral wall that starts the corresponding hole of cup when start claw 4 reverses and makes start-up cup form high-speed rotation, thereby finally realizes the start-up of engine. In the process that the claw seat 2b drives the starting claw 4 to rotate reversely, the starting claw 4 moves along the claw outlet 15a to abut 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 reversely around the hinge point to retract into the accommodating groove 2b1, and the starting claw 4 is separated from the starting cup.

Therefore, the starting device is characterized in that the inner end of the starting claw 4 is hinged with the starting disc 2, the hinge point of the starting claw 4 is eccentrically arranged in the corresponding accommodating groove 2b1, so that the distance from the inner end of the starting claw 4 to the hinge point can be shortened, the limiting surface 4a at the inner side of the starting claw 4 can smoothly swing from a state opposite to the groove wall I2 b11 to a state abutting against the groove wall II 2b12, the swinging amplitude of the starting claw 4 is greatly increased, the inner end of the starting claw 4 can rotate around the hinge point by a larger angle, and the starting claw 4 can be opened outwards by a larger angle. The size of the starting cup is different due to the difference of the power or the model of the engine, and the starting claw 4 can be opened outwards by a larger angle, so that the starting device can be matched with the starting cups of various sizes, and the applicability of the starting device is improved well.

In addition, in the in-service use, because stay cord 6 is longer, appear very easily when user pulls stay cord 6 because of the angle problem that stay cord 6 is blocked or the circumstances of pulling difficulty appear in casing 1, it is very inconvenient to use to some older users. For this reason, a limiting piece 10 is arranged on the positioning shaft 9 in the cavity 1a close to the starting claw 4 assembly, and the pulling angle of the pulling rope 6 can be limited by pressing the outer side surface of the limiting piece 10 on the pulling rope 6, so that the pulling rope 6 can be stably pulled out; meanwhile, since the limiting member 10 can rotate, when the pulling rope 6 is pulled, the limiting member 10 rotates under the action of friction force, so that rolling friction is formed between the pulling rope 6 and the limiting member 10, thereby greatly reducing the resistance of the limiting member 10 to the pulling rope 6 and reducing the abrasion of the pulling rope 6. Through the restriction of the limiting part 10 on the pulling angle of the pull rope 6 and the rolling friction formed between the pull rope 6 and the limiting part 10 when pulled, a user with a relatively old age can conveniently use the starting device, so that the applicability is well improved, and the starting device is more universal and has higher practical value.

Example two

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 supporting bearing is disposed between the roller and the positioning shaft 9, an annular limiting groove is disposed on an outer peripheral surface of the roller, and the pull rope 6 passes through the annular limiting groove.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (10)

1. The starting device comprises a shell (1) and a starting disc (2) which is arranged in the shell (1) and can rotate, wherein at least two accommodating grooves (2b1) are symmetrically formed in the starting disc (2), a starting claw (4) is hinged in each accommodating groove (2b1), the starting claw (4) can swing relative to the starting disc (2), the starting device is characterized in that the hinged point of the starting claw (4) is located at the position close to the inner end of the starting claw (4), the accommodating grooves (2b1) are provided with limiting side walls (2b11) corresponding to the center direction of the starting disc (2), and when the starting claw (4) swings in the direction far away from the center of the starting disc (2), the inner end of the starting claw (4) can abut against the limiting side walls (2b11) to block the starting claw (4) from continuing to swing outwards.

2. The starting device according to claim 1, characterized in that the limiting side wall (2b11) is an outward convex arc surface, and an arc abdicating concave surface (4b) is arranged on one side of the starting claw (4) close to the center direction of the starting disc (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), the limiting surface (4a) is a concave arc surface, and when the starting claw (4) swings towards the direction far away from the center of the starting disc (2), the limiting surface (4a) is abutted against the limiting side wall (2b 11).

4. The actuating device of claim 1, 2 or 3, wherein the hinge point of the actuating pawl (4) is eccentrically disposed in the receiving groove (2b 1).

5. The starting device according to claim 1, characterized in that the outer circumferential surface of the starting disc (2) is provided with a plurality of circles of pulling ropes (6), the inner ends of the pulling ropes (6) are fixedly connected with the starting disc (2), the outer ends of the pulling ropes (6) penetrate out of the shell (1), a rotatable limiting part is arranged in the shell (1), and the outer side surface of the limiting part (10) is pressed against the pulling ropes (6) to bend the pulling ropes (6).

6. The starting device according to claim 5, wherein a positioning shaft (9) is fixed in the housing (1) near the starting disc (2), the limiting member (10) is a hollow cylinder sleeved on the positioning shaft (9), the pulling rope (6) contacts with the outer circumferential surface of the limiting member (10), or the limiting member (10) is a roller, a support bearing is arranged between the roller and the positioning shaft (9), an annular limiting groove is arranged on the outer circumferential surface of the roller, and the pulling rope (6) passes through the annular limiting groove.

7. The starting device according to claim 6, wherein the housing (1) is provided with a cavity (1a), the inner peripheral wall of the cavity (1a) is provided with an annular boss (1c), the starting disc (2) comprises a disc body (2a) and a claw seat (2b) protruding out of the center of one end face of the disc body (2a), the disc body (2a) and the limiting piece (10) are both located in the central hole of the annular boss (1c), the end face of the annular boss (1c) is fixed with a dust-proof plate (12) for blocking the disc body (2a) and the limiting piece (10) in the central hole of the annular boss (1c), and the claw seat (2b) extends out of the dust-proof plate (12).

8. The starting device as claimed in claim 7, wherein the outer diameter of the disk body (2a) is slightly smaller than the inner diameter of the central hole of the annular boss (1c), the inner side wall of the annular boss (1c) is provided with a notch (1c1), the side of the housing (1) is provided with a wire outlet (1b) in a penetrating way, the inner end opening of the wire outlet (1b) is located on the inner wall of the notch (1c1), and the limiting piece (10) is located in the notch (1c 1).

9. The starting device according to claim 7, wherein an annular stop portion (9a) is provided at an outer side of one end of the positioning shaft (9), a positioning recess hole (12a) is provided in the dust-proof plate (12), the other end of the positioning shaft (9) is inserted into the positioning recess hole (12a), and the limiting member (10) is axially positioned between an end surface of the annular stop portion (9a) and a surface of the end of the positioning recess hole (12 a).

10. The starting device according to claim 9, wherein a through hole (1d) is formed through the bottom wall of the cavity (1a), a threaded connection portion (9b) is arranged at one end of the positioning shaft (9) where the annular blocking portion (9a) is arranged, the threaded connection portion (9b) penetrates through the shell (1) through the through hole (1d), a fastening nut (11) is connected to the threaded connection portion (9b) penetrating out of the shell (1) in a threaded manner, and one end face of the annular blocking portion (9a) abuts against the bottom wall of the cavity (1 a).

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