CN212479445U - Starting wheel of hand-pulling auxiliary starter - Google Patents

Abstract

The utility model provides a hand power auxiliary starter's starting wheel belongs to the auxiliary start technical field. It has solved the current problem that the starting wheel set operation skill requires highly. This hand power auxiliary starter's starter wheel includes the annular body, the body outer peripheral face is the conical surface, the body outer peripheral face is equipped with spiral grooving, grooving both ends are respectively for going into the rope end and going out the rope end, it is located the less one end department of body external diameter to go into the rope end, it is located the great one end department of body external diameter to go out the rope end, the great one terminal surface of body external diameter is equipped with the cavity, the inboard chamber wall of cavity is the conical surface the same with body outer peripheral face tapering, the inboard chamber wall of cavity is close to oral area department and links firmly the annular arch that is used for holding volute spiral spring, the protruding lateral part of annular. This auxiliary starter's of hand power starting wheel has advantages such as convenient laborsaving, automatic acceleration, good reliability.

Description

Starting wheel of hand-pulling auxiliary starter

Technical Field

The utility model belongs to the technical field of the auxiliary start, a hand power auxiliary starter's starting wheel is related to.

Background

With the continuous progress of society, 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 cultivator is a gasoline/diesel engine which can be driven by auxiliary starting equipment before working to enter a running state. Common starter has hand starter and hand power starter, and wherein hand power starter has comparatively stable market because its simple structure and cost are lower.

For example, patent application No. 201220545144.1 discloses a hand-pulling starter for diesel engine, which comprises a fixed cover with a recess inside and a starting disk arranged in the recess of the fixed cover, wherein the recess has a central shaft and a coil groove, the starting disk is sleeved on the central shaft, the starting disk can rotate around the central shaft, the coil groove is internally provided with a coil, one end of the coil is fixed on the side wall of the coil groove, the other end of the coil is fixed on the starting disk, the starting disk is provided with an annular groove, a starting rope is arranged in the annular groove, the outer end of the starting rope penetrates out of the edge of the fixed cover, a mounting groove is arranged at the outer end part of the starting disk in a clearance mode, and a starting claw is hinged. When the starting device is operated, the starting rope is pulled to rotate around the central shaft, the coil spring is wound to store force during the rotation, 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 diesel 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 diesel engine.

The starting rope is wound outside the starting disc for a plurality of circles through the annular groove, and when an operator pulls the starting rope to drive the starting disc to rotate, the rotating speed of the starting disc is unchanged, so that a phenomenon can occur: when the starting disc is large, an operator pulls the starting disc with less labor, but the rotating speed of the starting disc is slow, and the probability of ignition failure of the diesel engine is high. In response to this phenomenon, there is also an option of reducing the outer diameter of the starter disk to ensure that the starter disk can have a relatively high rotational speed, but accordingly, the force required to pull the starter disk up in the initial state becomes large, i.e., it takes a relatively large amount of force. Therefore, the hand-pulling starter with the structure generally has the problem of high requirement on the operation skill of a user.

Disclosure of Invention

The utility model aims at the above-mentioned problem that prior art exists, provide a starting wheel of hand power assistor, solved the problem that requires high to the operating skill.

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

hand power auxiliary starter's starter wheel, including the annular body, its characterized in that, the body outer peripheral face be the conical surface, the body outer peripheral face is equipped with spiral grooving, grooving both ends are respectively for going into rope end and play rope end, it is located the less one end department of body external diameter to go into the rope end, it is located the great one end department of body external diameter to go out the rope end, the great terminal surface of body external diameter is equipped with the cavity, the inboard chamber wall of cavity is the conical surface the same with body outer peripheral face tapering, the inboard chamber wall of cavity is close to oral area department and links firmly the annular arch that is used for holding volute spiral spring, the protruding lateral part of annular runs through and is provided.

One end of the pull rope is fixed on the disc body at the rope inlet end, then the pull rope is wound on the disc body along the rope groove and then led out from the rope outlet end, and a user pulls the pull rope from the rope outlet end to release so as to drive the starting wheel to rotate during operation. Because the distance from the bottom of the rope groove to the central axis of the tray body is gradually reduced from the rope outlet end to the rope inlet end, the circle formed by winding the pull rope on the tray body is gradually increased from the rope outlet end to the rope inlet end, so that the pull rope is in a conical spiral shape after being wound on the tray body. Therefore, a user can easily pull the starting wheel to rotate in the initial stage; meanwhile, under the condition that the friction force between the pull rope and the disc body is inconvenient, the speed change effect is formed by means of the rope groove, so that the starting wheel can automatically speed up, and the engine can be ensured to be ignited smoothly for starting. In addition, the annular bulge is used for accommodating the spiral spring, one end of the spiral spring is hooked on the bayonet when the annular bulge is used, so that the elastic force of the spiral spring can be tightened when the starting wheel rotates, and the annular bulge is located on the inner side cavity wall close to the opening part of the concave cavity, and the concave cavity is arranged on one end face with larger outer diameter of the body, so that the space is larger, and the rebound of the spiral spring is facilitated more.

In foretell hand power auxiliary starter's starter wheel, the body in cavity diapire center department have the cylinder, run through on the cylinder and be provided with the hole of cup jointing, the inboard chamber wall of cavity has still linked firmly a plurality of support bulge loops, the terminal surface of each support bulge loop flushes mutually and is located annular protruding inboard.

The arrangement of the supporting convex ring ensures that the spiral spring can keep flat in the annular bulge, thereby ensuring that the elastic force of the spiral spring can be stably tightened or released.

In the starting wheel of the auxiliary starter pulled by hand, a plurality of reinforcing rib pieces are fixedly connected between the cylinder and the annular bulge along the circumferential direction, each reinforcing rib piece is crossed with each supporting convex ring, and the end face of each reinforcing rib piece is flush with the end face of each supporting convex ring.

In the starting wheel of the hand-pulling auxiliary starter, a plurality of supporting pieces are fixedly connected between the outer wall of the annular bulge and the inner side cavity wall of the concave cavity, and the supporting pieces are uniformly distributed along the circumferential direction.

In the starting wheel of the hand-pulling auxiliary starter, the body at the bottom wall of the concave cavity is provided with a groove corresponding to the end with the smaller outer diameter of the body, the groove wall of the groove is provided with a through hole in a penetrating way, and an orifice at one end of the through hole is communicated with the rope inlet end of the rope groove.

When connecting the stay cord, knot stay cord one end, then wear the body outside the stay cord other end from the groove through-hole, twine the stay cord along this external grooving again. Because annular protrusion links firmly in the inboard chamber wall that the cavity is close to oral area department, and the inboard chamber wall of cavity is the conical surface, consequently makes the mounted position of volute spring and the position of wearing to establish of stay cord between have great space of stepping down, and the stay cord part of knoing just can not contact volute spring in the course of the work like this, ensures that volute spring can not be by the stay cord part of knoing outside ejecting annular protrusion, guaranteed the reliability.

In foretell hand power auxiliary starter's starter wheel, the less one end of body external diameter circular boss has, the terminal surface symmetric distribution of circular boss has two holding tanks.

Compared with the prior art, this hand power auxiliary starter's starter wheel is through setting up the body into the conical surface and setting up spiral grooving for lighter and more amazing back starter wheel can automatic speed-up during initial pulling, has reduced the requirement to user operation skill from this well, makes it more practical. By means of the arrangement of the rope grooves, the recoil force generated when the ignition fails can be gradually smaller, and meanwhile, the recoil speed can be gradually reduced, so that a buffering process is formed, the injury to a user is reduced, and the safety is improved.

In addition, because the annular bulge is positioned on the inner side cavity wall close to the opening part of the concave cavity, and the concave cavity is arranged on the end surface with larger outer diameter of the body, the space is larger, and the rebound of the spiral spring is more facilitated.

Drawings

Fig. 1 is a schematic diagram of a hand-pulled auxiliary starter.

Fig. 2 is a cross-sectional view of the pull assist actuator.

Fig. 3 is a schematic view of the starter wheel.

Fig. 4 is another angular schematic view of the starter wheel.

In the figure, 1, a housing; 1a, a recess; 2. pulling a rope; 3. a starter wheel; 3a, a body; 3a1, rope grooves; 3a2, annular protrusion; 3a21, bayonet; 3a3, cylinder; 3a4, support convex ring; 3a5, reinforcing rib pieces; 3a6, support sheet; 3a7, groove; 3a8, vias; 3a9, circular boss; 3a91, accommodating groove; 4. a mandrel; 4a, a circular plate; 5. a limiting member; 5a, a substrate; 5b, a limiting plate; 5c, reinforcing the skirt; 6. fastening screws; 7. fastening a nut; 8. a volute spiral spring; 9. matching rings; 10. starting a claw; 11. a claw disk; 12. a nut; 13. a spring; 14. a handle.

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.

As shown in fig. 1, 2, 3 and 4, the hand-pulling auxiliary starter includes a housing 1, a pull rope 2, a spiral spring 8, a mandrel 4 fixed in the housing 1, and a starting wheel 3 sleeved on the mandrel 4. Starter wheel 3 includes the annular body 3a, body 3a outer peripheral face is the conical surface, body 3a outer peripheral face is equipped with spiral grooving 3a1 and grooving 3a1 winds body 3a outer peripheral face at least three rings, grooving 3a1 both ends are respectively for going into the rope end and going out the rope end, it is located the less one end department of body 3a external diameter to go into the rope end, it is located the great one end department of body 3a external diameter to go out the water end, 2 one end of stay cord are fixed mutually with the body 3a of going into rope end place department, stay cord 2 is along grooving 3a1 winding behind body 3a outer peripheral face from going out the lateral part that the housing was worn out to the rope end, the one end that stay cord 2 wore out the housing is fixed. Housing 1 is one side opening one side confined tubular structure, 4 one ends of dabber have circular slab 4a, circular slab 4a and 1 inboard roof welded fastening of housing, 4 outer cup joints of dabber have the cooperation ring 9, cooperation ring 9 and circular slab 4a welded fastening, the cooperation ring 9 lateral part runs through and is provided with the breach, the great terminal surface of body 3a external diameter is equipped with the cavity, the inboard chamber wall of cavity is the conical surface the same with body 3a outer peripheral face tapering, the inboard chamber wall of cavity is close to oral area department and has linked firmly annular arch 3a2, annular arch 3a2 lateral part runs through and is provided with bayonet socket 3a21, volute spiral spring 8 is located in annular arch 3a2 and dabber 4 passes from volute spiral spring 8 center, volute spiral 8's both ends are respectively hooked on bayonet socket 3a21 lateral wall and breach lateral wall. The two ends of the spiral spring 8 are hooked on the side wall of the bayonet 3a21 and the side wall of the notch, respectively, so that the matching ring 9 is fixed when the user pulls the starter wheel 3 to rotate, which means that one end of the spiral spring 8 is fixed, thus driving the elastic force of the spiral spring 8 to tighten when the starter wheel 3 rotates to accumulate the energy required for starting the diesel engine.

Through set up the grooving 3a1 that is spiral outside body 3a for stay cord 2 is the conical spiral after finishing winding on body 3a, and stay cord 2 is released from the great part of body 3a external diameter, consequently makes the user can pull body 3a at the initial stage very easily at first and rotate. Then at the in-process that stay cord 2 constantly released, with the help of the constantly reducing of body 3a external diameter for body 3a can form the acceleration automatically with the help of the cooperation of stay cord 2 with grooving 3a1, and the rotational speed of body 3a promotes and makes the power that volute spiral spring 8 holds increase, and the energy that volute spiral spring 8 can release just more like this and make diesel engine cylinder internal energy oily more fast, thereby has improved diesel engine's ignition success rate.

As shown in fig. 4, further, the body 3a has a cylinder 3a3 at the center of the bottom wall of the cavity, a sleeve hole is provided through the cylinder 3a3, the core shaft 4 passes through the sleeve hole, the cavity wall inside the cavity is further fixedly connected with a plurality of supporting convex rings 3a4, and the end faces of the supporting convex rings 3a4 are flush with each other and located inside the annular protrusion 3a 2. A plurality of reinforcing rib pieces 3a5 are fixedly connected between the cylinder 3a3 and the annular bulge 3a2 along the circumferential direction, each reinforcing rib piece 3a5 is crossed with each supporting convex ring 3a4, and the end face of each reinforcing rib piece 3a5 is flush with the end face of the supporting convex ring 3a 4. A plurality of supporting pieces 3a6 are fixedly connected between the outer wall of the annular bulge 3a2 and the inner side cavity wall of the concave cavity, and the supporting pieces 3a6 are uniformly distributed along the circumferential direction. The body 3a at the bottom wall of the concave cavity is provided with a groove 3a7 corresponding to the smaller outer diameter end of the body 3a, the wall of the groove 3a7 is provided with a through hole 3a8 in a penetrating way, and the opening at one end of the through hole 3a8 is communicated with the rope inlet end of the rope groove 3a 1. When the pulling rope 2 is connected, one end of the pulling rope 2 is knotted, then the other end of the pulling rope 2 is threaded out of the body 3a from the groove 3a7 through the through hole 3a8, and then the pulling rope 2 is wound along the rope groove 3a1 outside the body 3 a.

As shown in fig. 2 and 3, the end of the body 3a with a smaller outer diameter has a circular boss 3a9, two receiving grooves 3a91 are symmetrically distributed on the end face of the circular boss 3a9, and the two receiving grooves 3a91 are respectively hinged with a starting claw 10 capable of swinging relative to the starting wheel 3. The other end of the mandrel 4 is sleeved with a claw disc 11, the end part of the circular boss 3a9 is positioned on the inner side of the claw disc 11, two arc claw outlets are arranged on the side part of the claw disc 11 in a penetrating manner, and one ends of two starting claws 10 are respectively positioned at the two arc claw outlets. The end part of the mandrel 4 is connected with a nut 12 in a threaded manner, the mandrel 4 is sleeved with a spring, and the elastic force of the spring acts on the claw disc 11 and pushes the claw disc against the nut 12. The spring pressing the pawl disk 11 against the nut 12 creates a friction force that prevents the pawl disk 11 from rotating so that when the user pulls the pull cord 2 to rotate the starter wheel 3, the pawl disk 11 remains stationary and the starter pawl 10 opens outwardly about the hinge point by abutting the circular arc exit side wall.

Further, as shown in fig. 1 and 2, a limiting member 5 is disposed in the housing 1 near the position where the pull rope 2 extends out of the starter wheel 3, the limiting member 5 includes a base plate 5a and a limiting plate 5b bent from one side of the base plate 5a, the limiting plate 5b is located outside the starter wheel 3, and the limiting plate 5b is specifically disposed in an inclined manner with respect to the base plate 5a toward the starter wheel 3. The clearance between the limiting plate 5b and the outer peripheral surface of the starter wheel 3 is smaller than the outer diameter of the pull rope 2, so that the pull rope 2 is limited between the bottom of the rope groove 3a1 and the limiting plate 5 b. The base plate 5a and the housing 1 are fixed by a fastener, the fastener includes a fastening screw 6 and a fastening nut 7, an end portion of the fastening screw 6 passes through the base plate 5a from the closed side of the housing 1, and the fastening nut 7 is screwed on the end portion of the fastening screw 6 to fix the base plate 5 a. The housing 1 has a recessed portion 1a recessed toward the inside of the housing 1, the shape of the inside of the recessed portion 1a is the same as the head of the fastening screw 6, specifically, it is hexagonal, and the head of the fastening screw 6 is fitted into the inside of the recessed portion 1 a. The bottom surface of the recess 1a is a flat surface, and the substrate 5a abuts against the bottom surface of the recess 1 a.

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 (6)

1. Starting wheel of hand power auxiliary starter, including annular body (3a), a serial communication port, body (3a) outer peripheral face be the conical surface, body (3a) outer peripheral face is equipped with spiral grooving (3a1), grooving (3a1) both ends are respectively for going into rope end and play rope end, it is located the less one end department of body (3a) external diameter to go into the rope end, it is located the great one end department of body (3a) external diameter to go out the rope end, the great one end face of body (3a) external diameter is equipped with the cavity, the inboard chamber wall of cavity is the conical surface the same with body (3a) outer peripheral face tapering, the inboard chamber wall of cavity links firmly annular arch (3a2) that are used for holding volute spring (8) near oral area department, annular arch (3a2) lateral part runs through and is provided with bayonet socket (3a 21).

2. A starting wheel of an auxiliary hand starter according to claim 1, wherein the body (3a) is provided with a cylinder (3a3) at the center of the bottom wall of the cavity, a sleeve hole is arranged on the cylinder (3a3) in a penetrating way, a plurality of supporting convex rings (3a4) are further fixedly connected to the cavity wall at the inner side of the cavity, and the end surfaces of the supporting convex rings (3a4) are flush with each other and are positioned at the inner side of the annular bulge (3a 2).

3. A starter wheel of an auxiliary pull starter as claimed in claim 2, wherein a plurality of reinforcing rib pieces (3a5) are fixed between the cylindrical body (3a3) and the annular protrusion (3a2) along the circumferential direction, each reinforcing rib piece (3a5) crosses each supporting convex ring (3a4), and the end surface of each reinforcing rib piece (3a5) is flush with the end surface of the supporting convex ring (3a 4).

4. A starting wheel of an auxiliary starter pulled by hand according to claim 1, 2 or 3, characterized in that a plurality of supporting pieces (3a6) are fixedly connected between the outer wall of the annular protrusion (3a2) and the inner cavity wall of the concave cavity, and the supporting pieces (3a6) are uniformly distributed along the circumferential direction.

5. A starting wheel of a hand pulling auxiliary starter as claimed in claim 1, wherein the body (3a) at the bottom wall of the cavity is provided with a groove (3a7) corresponding to the end of the body (3a) with smaller outer diameter, the wall of the groove (3a7) is provided with a through hole (3a8) in a penetrating way, and the opening at one end of the through hole (3a8) is communicated with the rope inlet end of the rope groove (3a 1).

6. A starting wheel of an auxiliary starter pulled by hand according to claim 1, characterized in that the end of the body (3a) with smaller outer diameter is provided with a circular boss (3a9), and two accommodating grooves (3a91) are symmetrically distributed on the end surface of the circular boss (3a 9).

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