CN113062814A - Engine - Google Patents

Abstract

The invention provides an engine, and belongs to the technical field of engines. The external part of the engine structure solves the technical problem that the external part of the existing engine structure is easy to interfere to cause the detachment failure. This engine includes the box, gear room and bent axle room have in the box, the lateral wall of bent axle room has the installation department that the drive shaft that supplies the starter passed, the installation department is towards one side protrusion at gear room place, the outer end of this installation department with the lateral wall of gear room links firmly through the reinforcing plate, and the lateral wall of this bent axle room, gear room's lateral wall, installation department and reinforcing plate surround and form the recess of stepping down that is used for installing the starter. The invention can protect the starter and ensure the strength of the box body.

Description

Engine

Technical Field

The invention belongs to the technical field of engines, and relates to an engine.

Background

The motorcycle engine box body is used for containing parts such as a crankshaft, a balance shaft and a speed change assembly, and is also an installation platform of external parts such as a starter, most of the parts are cast and molded by cast iron materials, the box body can be continuously impacted by pulses of the internal crankshaft and the balance shaft in the driving process of the motorcycle, and the quality level of the box body is closely related to the working stability of the engine.

Chinese patent publication No. CN206092205U discloses a crankcase of a motorcycle engine, in which a bearing mounting hole is formed in the crankcase, a balance shaft in the motorcycle engine is embedded in the crankcase and extends into the bearing mounting hole, a bearing sleeve in the motorcycle engine is disposed at the balance shaft and assembled in the bearing mounting hole, the diameter of the bearing mounting hole is 42 mm, the depth of the bearing mounting hole is 13 mm, and the size of the bearing is matched with the size of the bearing mounting hole.

The box body structure can enable the inner bearing to work more stably, but the starter component arranged outside the box body is easy to interfere to cause disengagement failure, and the working stability of the engine is influenced. To solve the above problems, one of ordinary skill in the art can easily consider: 1. the connection strength of the external starter is increased, and the external starter is prevented from generating displacement; 2. a protective cover is arranged on the external starter, so that the influence caused by collision is reduced.

Disclosure of Invention

The present invention provides an engine aiming at the above problems existing in the prior art, and the technical problems to be solved by the present invention are: how to improve the working stability of the engine.

The purpose of the invention can be realized by the following technical scheme:

the utility model provides an engine, the power distribution box comprises a box body, gear room and bent axle room have in the box, its characterized in that, the lateral wall of bent axle room has the installation department that the drive shaft that supplies the starter passed, the installation department is protruding towards one side at gear room place, the outer end of this installation department with the lateral wall of gear room links firmly through the reinforcing plate, and the recess of stepping down that is used for installing the starter is enclosed to the lateral wall of this bent axle room, the lateral wall of gear room, installation department and reinforcing plate.

The box belongs to the casing part of engine, and the gear room is used for holding derailleur subassembly, and the bent axle room is used for holding and installs subassembly such as bent axle and the balance shaft of engine, and the starter is installed in the box outside, and the drive shaft of starter passes through one-way transmission and is connected with the bent axle rotation, thereby can control starter circular telegram drive the bent axle to rotate when needing to start the engine and drive piston stroke motion and do benefit to and realize the ignition operation. The outer side wall of the crank chamber is provided with the mounting part which protrudes towards one side of the gear chamber, the mounting part is a mounting platform of the starter, a driving shaft of the starter can penetrate through a gear arranged in the mounting part to drive the crankshaft to finally drive the crankshaft, the outer end of the mounting part is fixedly connected with the outer side wall of the gear chamber through the reinforcing plate, the outer side wall of the crank chamber, the outer side wall mounting part of the gear chamber and the reinforcing plate surround to form a yielding groove, the starter can be fixedly arranged in the yielding groove, the outer side wall of a box body can form a protective shell for protecting the circumferential direction of the starter when the starter is mounted, the probability that the starter is collided is reduced to ensure the stable work of an engine, and the reinforcing plate fills the space between the mounting part and the outer side wall of the gear chamber, so that the circumferential direction of the yielding groove forms a structural, and the working stability of the engine is ensured.

In above-mentioned engine, the uncovered of the recess of stepping down sets up, the bottom surface of the recess of stepping down has the hole that leaks that sets up down and communicate with the external world, the bottom surface of the recess of stepping down and the junction of the recess circumference lateral wall of should stepping down have a plurality of floor that the upper and lower direction set up. The setting is stepped down the recess uncovered up, set up down the hole that leaks with external intercommunication in the bottom surface of recess of stepping down, the rainwater falls into and can flow to the external world from the hole that leaks after stepping down the recess like this, avoid causing to soak the starter and lead to the work inefficacy, and then improve job stabilization nature, set up the floor of a plurality of vertical extensions in the bottom surface of recess of stepping down and the junction of this recess circumference lateral wall of stepping down, the upper and lower direction floor can be reinforceed the inside wall of recess of stepping down, further guarantee stable in structure.

In above-mentioned engine, the low department in bottom surface of the recess of stepping down has the section of converging that caves in and be the bar down, it is located to leak the water passageway the section of converging is last, and is a plurality of the downside border of floor with the section surface joint that converges, a plurality of floors are along the length direction interval arrangement of this section of converging and will the section of converging is separated for a plurality of sections stagnant basin. The lower part of the bottom surface of the abdicating groove is provided with the downward-sunken strip-shaped confluence section, so that the upper end of the water leakage hole is positioned on the confluence section, the lower side edge of the rib plate is jointed with the surface of the confluence section, and the rib plates are arranged at intervals along the length direction of the confluence section and divide the confluence section into a plurality of sections of stagnant water grooves, so that rainwater entering the abdicating groove can preferentially flow into the confluence section under the action of gravity trend, and the rainwater can be rapidly discharged from the water leakage hole; and the floor separates the section of converging for a plurality of basins that stagnates, can make partial rainwater can be detained in the basin that stagnates under overcast and rainy weather, can last to provide the heat dissipation for the box through the heat absorption transpiration in engine working process, does benefit to the engine and work more high-efficient steadily, and also can rely on the engine box body residual temperature to transpire the rainwater in the basin that stagnates behind the motorcycle income garage, avoids long-pending to cause the corrosion, guarantees job stabilization.

In the engine, the surface of the confluence section is in a concave arc surface shape, and the edge of the confluence section is subjected to smooth transition treatment. The surface of the confluence section is in a concave arc surface shape, and the side edge of the confluence section is in smooth transition, so that rainwater can smoothly enter the confluence section, stress concentration of the edge structure of the confluence section is avoided, and the structure is stable.

In the engine, the bottom surface of the yielding groove is also provided with a limiting boss protruding upwards, when the starter is installed in the yielding groove, the limiting boss is vertically opposite to the lowest position of the starter, the limiting boss is located between two adjacent rib plates along the length direction of the confluence segment, and the top position of the limiting boss is higher than the lowest position of the upper side edge of the rib plate. The limiting boss protruding upwards is arranged on the bottom surface of the stepping groove, so that the limiting boss is vertically opposite to the lowest position of the starter after the starter is installed, the limiting boss can limit the lowest position of the starter, the safe and accurate installation position of the starter is guaranteed, in addition, rainwater can flow out from the lowest position of the upper side edge of the rib plate after the liquid level in the stagnant water tank rises, the limiting boss is located between two adjacent rib plates along the length direction of the confluence segment, the top position of the limiting boss is higher than the lowest position of the upper side edge of the rib plate, the maximum water level of the stagnant water tank can be prevented from being influenced by the limiting boss, the rainwater can be guaranteed not to be continuously soaked in the starter, and the working stability is improved.

In the engine, the crankshaft chamber and the gear chamber are sequentially arranged along the front-back direction of the engine, the engine comprises a cylinder body arranged above the box body, a plurality of cylinder barrels arranged along the left-right direction are arranged in the cylinder body, and the abdicating groove is opposite to the lower ends of the cylinder barrels along the front-back direction. Arrange in proper order along the fore-and-aft direction of engine through setting up bent axle room and gear room, and the engine is including locating the cylinder body of box top makes the recess of stepping down just right along fore-and-aft direction and cylinder lower extreme, lets the rainwater get into the recess of stepping down like this and can dispel the heat simultaneously to the region at a plurality of cylinder lower extreme places more directly, improves the radiating effect.

In the engine, the confluence section is arranged along the left-right direction of the engine, and the length dimension of the confluence section is matched with the left-right direction dimension of the cylinder block. Through setting up the left and right sides direction setting of the edge engine of the section of converging, and the length size of the section of converging and the size looks adaptation of the left and right sides direction of cylinder body, the rainwater of further guaranteeing in each stagnant water groove like this can absorb the heat of each cylinder body transmission more evenly, guarantees to cool off evenly stably.

In the engine, the water leakage hole is located at the edge of the yielding groove bottom surface, and the lower end of the water leakage hole is located on the outer surface of the box body below the mounting portion. The water leakage holes are formed in the edges of the bottom surface of the yielding groove, the lower ends of the water leakage holes are located on the outer surface of the box body below the mounting portion, the length of the water leakage holes is shortened, the influence of the water leakage holes on the structural strength and the heat dissipation effect of the engine is reduced to the maximum extent, and water flow is guaranteed to be smooth.

In the engine, the bottom of the abdicating groove is provided with a plurality of mounting columns for mounting the starter, and the mounting columns are arranged along the vertical direction. The mounting columns arranged in the vertical direction are arranged at the bottom of the abdicating groove, so that the other end of the starter is fixedly connected with the mounting columns, the two ends of the starter are balanced in stress, and the mounting structure is guaranteed to be stable.

In the engine, the top joint surface of the case is parallel to the bottom joint surface of the case. The top joint surface of the box body is parallel to the bottom joint surface of the box body, so that casting and processing are convenient, production cost is saved, and connection stability is guaranteed.

Compared with the prior art, the invention has the following advantages:

this engine is through setting up the installation department, the reinforcing plate, the recess of stepping down is formed in the encirclement of crankshaft room lateral wall and gear room lateral wall, make starter one end that is located the recess of stepping down be connected with the installation department, the inside wall of recess of stepping down can form the protective housing of protection starter circumference when realizing the starter installation like this, the protecting effect is excellent, need not additionally to increase the accessory, reduce the probability that the starter receives to collide with in order to guarantee engine job stabilization, in addition the installation department links firmly through the reinforcing plate with the lateral wall of gear room, the reinforcing plate fills the space between installation department and the gear room lateral wall, make the circumference of recess of stepping down form the structure closed loop like this, thereby improve the intensity in starter connection area, guarantee engine job.

Drawings

Fig. 1 is a schematic perspective view of the engine of the present embodiment.

Fig. 2 is a schematic perspective view of the case and the starter in this embodiment.

Fig. 3 is a schematic perspective view of the case in this embodiment.

Fig. 4 is a schematic perspective view of the case and the starter in another angle in the present embodiment.

Fig. 5 is a schematic cross-sectional view of the case and the starter in the present embodiment.

Fig. 6 is an enlarged view of a portion a in fig. 5.

Fig. 7 is a schematic perspective exploded view of the engine of the present embodiment.

Fig. 8 is a schematic perspective view of the case and the starter in the present embodiment.

In the figure, 1, a box body; 11. a gear chamber; 12. a crankshaft chamber; 13. an installation part; 14. a reinforcing plate;

2. a starter;

3. a yielding groove; 31. a water leakage hole; 32. a rib plate; 33. a bus bar section; 34. a water stagnation tank; 35. a limiting boss; 36. mounting a column;

4. a cylinder body; 41. a cylinder barrel.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1-8, the engine includes a housing 1, the housing 1 has a gear chamber 11 and a crank chamber 12 therein, an outer side wall of the crank chamber 12 has a mounting portion 13 protruding toward a side of the gear chamber 11, one end of the starter 2 can be connected with the mounting portion 13, an outer end of the mounting portion 13 is fixedly connected with an outer side wall of the gear chamber 11 through a reinforcing plate 14, and an abdicating groove 3 for accommodating and mounting the starter 2 is formed by the outer side wall of the crank chamber 12, the outer side wall of the gear chamber 11, the mounting portion 13 and the reinforcing plate 14. The box 1 belongs to the shell part of the engine, the gear chamber 11 is used for containing a transmission component, the crankshaft chamber 12 is used for containing and installing components such as a crankshaft, a balance shaft and the like of the engine, the starter 2 is installed on the outer side of the box 1, a driving shaft of the starter 2 is in rotational connection with the crankshaft through a one-way transmission device, and when the engine needs to be started, the starter 2 can be controlled to be electrified to drive the crankshaft to rotate so as to drive the piston to move in a stroke mode, and ignition operation is achieved. The outer side wall of the box body 1 between the gear chamber 11 and the crank chamber 12 is provided with the abdicating groove 3, the outer side wall of the crank chamber 12 is provided with the mounting part 13 protruding towards the gear chamber 11, one end of the starter 2 positioned in the abdicating groove 3 is connected with the mounting part 13, the abdicating groove 3 is formed by the outer side wall of the crank chamber 12, the outer side wall of the gear chamber 11, the mounting part 13 and the reinforcing plate 14 in a surrounding way, thus realizing the mounting of the starter 2, the outer side wall of the box body 1 can form a protective shell for protecting the circumferential direction of the starter 2, reducing the probability of the collision of the starter 2 to ensure the stable work of an engine, in addition, the mounting part 13 is fixedly connected with the outer side wall of the gear chamber 11 through the reinforcing plate 14, the reinforcing plate 14 is used for filling the space between the mounting part 13 and the outer side wall of, and the working stability of the engine is ensured. Further, let open setting up of a recess 3, let the bottom surface of a recess 3 have the hole 31 that leaks that sets up down and communicate with the external world, let the bottom surface of a recess 3 and the junction of this recess 3 circumference lateral wall of stepping down have four floor 32 that the direction set up from top to bottom. Set up and let a recess 3 uncovered up, set up the hole 31 that leaks with external intercommunication down in the bottom surface of recess 3 of letting, the rainwater falls into and can flow to the external world from the hole 31 that leaks after recess 3 of letting, avoid causing to soak and lead to the work inefficacy starter 2 like this, and then improve job stabilization nature, set up the floor 32 of a plurality of vertical extensions in the bottom surface of recess 3 of letting and the junction of the 3 circumference lateral walls of recess 3 of this letting, up-and-down direction floor 32 can be reinforceed the inside wall of recess 3 of letting, further guarantee stable in structure. Preferably, the recessed groove 3 has a downward-recessed strip-shaped confluence section 33 at a lower portion of a bottom surface thereof, the water leakage passage is located on the confluence section 33, lower side edges of the four ribs 32 are joined to a surface of the confluence section 33, and the ribs 32 are arranged at intervals along a length direction of the confluence section 33 and divide the confluence section 33 into a plurality of water stagnation grooves 34. The downward-concave strip-shaped confluence section 33 is arranged at the lower part of the bottom surface of the abdicating groove 3, so that the upper end of the water leakage hole 31 is positioned on the confluence section 33, the lower side edge of the ribbed plate 32 is jointed with the surface of the confluence section 33, the four ribbed plates 32 are arranged at intervals along the length direction of the confluence section 33 and divide the confluence section 33 into four sections of water stagnation grooves 34, and thus rainwater entering the abdicating groove 3 can preferentially flow into the confluence section 33 under the action of gravity trend, and is rapidly discharged from the water leakage hole 31; and floor 32 separates the section 33 that converges for four sections stagnant basin 34, can make partial rainwater can be detained in stagnant basin 34 under overcast and rainy weather, can last to transpire through the heat absorption in engine working process and provide the heat dissipation for box 1, does benefit to the more high-efficient work of engine, and also can rely on the engine box 1 surplus temperature to transpire the rainwater in stagnant basin 34 after motorcycle income garage, avoids long-pending to cause the corrosion, guarantees job stabilization. The surface of the confluence section 33 is concave arc surface, and the edge of the confluence section 33 is processed by smooth transition. The surface of the confluence section 33 is concave arc surface-shaped, and the side edge of the confluence section 33 is in smooth transition, so that rainwater can smoothly enter the confluence section 33, and stress concentration of the edge structure of the confluence section 33 is avoided, and the structure is stable. The bottom surface of the abdicating groove 3 is also provided with a limiting boss 35 which protrudes upwards, the limiting boss 35 is opposite to the lowest position of the starter 2 along the vertical direction after the starter 2 is installed, the limiting boss 35 is positioned between two adjacent rib plates 32 along the length direction of the confluence section 33, and the top position of the limiting boss 35 is higher than the lowest position of the upper side edge of the rib plate 32. The limiting boss 35 protruding upwards is arranged on the bottom surface of the abdicating groove 3, the limiting boss 35 is vertically opposite to the lowest position of the starter 2, so that the limiting boss 35 can limit the lowest position of the starter 2, and the safe and accurate installation position of the starter 2 is ensured, in addition, rainwater can flow out from the lowest position of the upper side edge of the rib plate 32 after the liquid level in the stagnant water groove 34 rises, the limiting boss 35 is positioned between two adjacent rib plates 32 along the length direction of the confluence section 33, and the top position of the limiting boss 35 is higher than the lowest position of the upper side edge of the rib plate 32, so that the influence of the limiting boss 35 on the maximum water level of the stagnant water groove 34 can be avoided, the rainwater can be ensured not to continuously soak the starter 2, and the working stability is improved. The crank chamber 12 and the gear chamber 11 are sequentially arranged along the front and back direction of the engine, the engine comprises a cylinder body 4 arranged above the box body 1, two cylinder barrels 41 arranged along the left and right direction are arranged in the cylinder body 4, the abdicating groove 3 is adjacent to the cylinder body 4 in the front and back direction, and the abdicating groove 3 is opposite to the lower ends of the two cylinder barrels 41 along the front and back direction. Through setting up bent axle room 12 and gear room 11 and arranging in proper order along the fore-and-aft direction of engine, and the engine is including locating cylinder body 4 of box 1 top, makes the recess of stepping down 3 just right with the cylinder 41 lower extreme along the fore-and-aft direction, lets the rainwater get into the recess of stepping down 3 like this and can dispel the heat simultaneously to the region at two cylinder 41 lower extremes places more directly, improves the radiating effect. The confluence section 33 is arranged along the left and right direction of the engine, and the length dimension of the confluence section 33 is matched with the left and right dimension of the cylinder 4. Through setting up the setting of the left and right sides direction of engine of the section of converging 33, and the length dimension of the section of converging 33 and the size looks adaptation of the left and right sides direction of cylinder block 4, the rainwater that further guarantees in each stagnant water groove 34 like this can absorb the heat of each cylinder block 4 transmission more evenly, guarantees to cool evenly stably. The water leakage hole 31 is positioned at the edge of the bottom surface of the abdicating groove 3, and the lower end of the water leakage hole 31 is positioned on the outer surface of the box body 1 below the mounting part 13. The edge that is located the recess 3 bottom surfaces of stepping down through setting up the hole 31 that leaks makes the lower extreme in the 1 surface of box below 13 of installation department of the hole 31 that leaks, does benefit to like this and shortens the length in hole 31 that leaks, and the at utmost reduces its influence to engine structural strength and radiating effect, and does benefit to and guarantees that rivers are unobstructed.

As shown in fig. 2-5, the bottom of the abdicating groove 3 is provided with two vertically arranged mounting columns 36, and the other end of the starter 2 can be fixedly connected with the mounting columns 36. The vertically arranged mounting column 36 is arranged at the bottom of the abdicating groove 3, so that the other end of the starter 2 is fixedly connected with the mounting column 36, the two ends of the starter 2 are guaranteed to be stressed in balance, and the stability of the mounting structure is guaranteed. The top mating surface of the case 1 is parallel to the bottom mating surface of the case 1. The top joint surface of the box body 1 is parallel to the bottom joint surface of the box body 1, so that casting and processing are convenient, production cost is saved, and connection stability is guaranteed.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims (10)

1. The utility model provides an engine, includes box (1), gear room (11) and crank chamber (12) have in box (1), its characterized in that, the lateral wall of crank chamber (12) has installation department (13) that the drive shaft that supplies the starter passed, installation department (13) are protruding towards one side at gear room (11) place, the outer end of this installation department (13) with the lateral wall of gear room (11) links firmly through reinforcing plate (14), and lateral wall, installation department (13) and reinforcing plate (14) of this crank chamber (12) surround and form recess (3) of stepping down that are used for installing the starter.

2. The engine according to claim 1, characterized in that the opening of the abdicating groove (3) is arranged upward, the bottom surface of the abdicating groove (3) is provided with a water leakage hole (31) which is arranged downward and communicated with the outside, and the joint of the bottom surface of the abdicating groove (3) and the circumferential side wall of the abdicating groove (3) is provided with a plurality of rib plates (32) which are arranged in the up-and-down direction.

3. The engine according to claim 2, characterized in that the bottom surface of the abdicating groove (3) is provided with a downward-concave strip-shaped confluence section (33) at a low position, the water leakage channel is positioned on the confluence section (33), the lower side edges of the plurality of ribs (32) are in surface joint with the confluence section (33), and the plurality of ribs (32) are arranged at intervals along the length direction of the confluence section (33) and divide the confluence section (33) into a plurality of sections of water retention grooves (34).

4. The engine according to claim 3, characterized in that the surface of the confluence section (33) is concave arc surface, and the edge of the confluence section (33) is processed by smooth transition.

5. The engine according to claim 3, characterized in that the bottom surface of the abdicating groove (3) is further provided with a limiting boss (35) protruding upwards, when the starter is installed in the abdicating groove (3), the limiting boss (35) is vertically opposite to the lowest position of the starter, the limiting boss (35) is located between two adjacent rib plates (32) along the length direction of the confluence section (33), and the top position of the limiting boss (35) is higher than the lowest position of the upper side edge of the rib plate (32).

6. The engine according to claim 2 or 3 or 4 or 5, characterized in that the crank chamber (12) and the gear chamber (11) are sequentially arranged along the front and back direction of the engine, the engine comprises a cylinder block (4) arranged above the box body (1), a plurality of cylinder barrels (41) arranged along the left and right direction are arranged in the cylinder block (4), and the abdicating groove (3) is opposite to the lower ends of the plurality of cylinder barrels (41) along the front and back direction.

7. The engine according to claim 3 or 4 or 5, characterized in that the confluence section (33) is arranged in the left-right direction of the engine, and the length dimension of the confluence section (33) is matched with the left-right direction dimension of the cylinder block (4).

8. The engine according to claim 2 or 3 or 4 or 5, characterized in that the water leakage hole (31) is positioned at the edge of the bottom surface of the abdicating groove (3), and the lower end of the water leakage hole (31) is positioned at the outer surface of the box body (1) below the mounting part (13).

9. The engine according to claim 1 or 2 or 3 or 4 or 5, characterized in that the bottom of the abdicating groove (3) is provided with a plurality of mounting columns (36) for mounting a starter, and the mounting columns (36) are arranged along the up-and-down direction.

10. An engine according to claim 1 or 2 or 3 or 4 or 5, characterized in that the top joint surface of the casing (1) is arranged parallel to the bottom joint surface of the casing (1).

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