CN209800112U

CN209800112U - Crankcase body structure

Info

Publication number: CN209800112U
Application number: CN201822262045.2U
Authority: CN
Inventors: 俞明锋
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-30
Filing date: 2018-12-30
Publication date: 2019-12-17
Anticipated expiration: 2028-12-30

Abstract

The utility model provides a crankcase box structure, including left box and right box, left side box includes the bearing installing zone, right side box joining region and carburetor installing zone, right side box includes bearing second installing zone, left side box joining region and carburetor second installing zone, left side box joining region and right box joining region are connected, the bearing installing zone is connected with bearing second installing zone, the carburetor installing zone is connected with carburetor second installing zone, be equipped with the direction draw-in groove in left side box joining region, fixed mounting has the oil outlet apron in the direction draw-in groove, direction draw-in groove can effectively pin oil-out apron top, oil-out apron top is gone into the position, fixed firm apron elasticity that can avoid the steel sheet material completely returns the friction to high-speed moving chain sword tooth that contracts.

Description

Crankcase body structure

Technical Field

The utility model relates to a crankcase box structure.

background

The gasoline chain saw engine belongs to the category of hand-held tools, and needs to be light, simple and convenient, so the design space is compact; the crank case (left case and right case) of the existing structure does not effectively solve the problems of heat insulation of a fuel control assembly mounting area, loosening of a stud under high-frequency vibration, friction of chain cutter teeth on a cover plate and the like, and has the defects of engine faults caused by high temperature, safety problems caused by loosening of the stud, irreversible mechanical damage and the like.

Disclosure of Invention

Not enough more than, the utility model aims to solve the technical problem that a crankcase box structure is provided for improve the heat-proof quality of fuel control assembly installing zone, and prevent that stud pine under the high frequency oscillation from taking off, improve engine life.

In order to solve the technical problems, the utility model adopts the technical proposal that,

The utility model provides a crankcase box structure, including left box and right box, left side box includes the bearing installing zone, right box joining region and carburetor installing zone, right side box includes the bearing second installing zone, left box joining region and carburetor second installing zone, left box joining region and right box joining region are connected, the bearing installing zone is connected with bearing second installing zone, the carburetor installing zone is connected with carburetor second installing zone, be equipped with the direction draw-in groove in left box joining region, fixed mounting has the oil outlet apron in the direction draw-in groove.

When adopting above technical scheme, the utility model discloses still further adopt or make up and adopted following technical scheme.

At the upper end fixedly connected with cross slab of left box joining region, the direction draw-in groove is equipped with the joint arch on the connecting portion of cross slab and left box joining region, in the direction draw-in groove.

Be equipped with two guide slot on the connecting portion of cross slab and left box joining region, the cross slab between two guide slot is convex, and is corresponding, and the top edge of oil outlet apron also is convex, through the setting at circular shape cross slab and circular shape oil-out apron edge, is convenient for carry out mutual positioning to cross slab and oil-out apron, is convenient for with the top edge joint of oil outlet apron in guide slot, improves the installation effectiveness of oil outlet apron.

Be equipped with the stud hole in left box joining region, be equipped with locking step in the outside of stud hole, in some preferred modes, locking step sets up on the face of being connected of left box joining region and oil outlet apron, it is preferred, fixedly connected with locking ring on stud, install stud downthehole back, locking ring is installed to locking step in, the rethread oil outlet apron is spacing with the other end of locking ring, prevent that stud from taking place to become flexible, improve the joint strength of stud and right box.

Two stud holes are arranged in the left box body connecting area, a cover plate mounting hole is arranged between two adjacent stud holes, and the oil outlet cover plate is connected with the cover plate mounting hole through a screw.

The second mounting area of the carburetor comprises a second partition mounting part and a second bracket mounting part, the second partition mounting part is connected with the second mounting area of the bearing, the second bracket mounting part is connected with the second partition mounting part, and a second connecting column is fixedly connected in the second bracket mounting part.

Fixedly connected with third floor and fourth floor between second baffle installation department and the second support installation department, the one end and the second baffle installation department of third floor are connected, and the other end and the second spliced pole of third floor are connected.

The carburetor mounting area includes baffle installation department and leg joint portion, baffle installation department and heat dissipation chamber fixed connection, and the leg joint portion is connected with the baffle installation department, is equipped with the leg joint mounting groove in the leg joint portion, installs the spliced pole on the leg joint mounting groove.

The support mounting structure comprises a support mounting groove, a first rib plate and a second rib plate are arranged in the support mounting groove, the first rib plate and the second rib plate are arranged in parallel, a first connecting stud is fixedly connected in the first rib plate, one end of the second rib plate is connected with a partition mounting portion, and the other end of the second rib plate is connected with a connecting column.

The length of the second carburetor mounting area is the same as the length of the carburetor mounting area.

The beneficial effects of the utility model are that, (1) through the setting of carburetor installing zone and carburetor second installing zone, the better disjunctor support of this engine installation heat-proof quality of being convenient for heat-proof quality between carburetor and the box is better, improves the life of carburetor, further improves the life of engine.

(2) Through set up the locking step that is used for installing stud in left box installing zone, utilize locking step to share the influence of external force to the screw thread, transmission and the distribution of each side's resultant force when changing stud atress prevent that stud from taking place to become flexible.

(3) Set up the direction draw-in groove in left box joining region, make it pin oil-out apron top, guarantee that oil-out apron top goes into the position, fixed jail, avoid the apron elasticity of steel sheet material to contract back the friction to high-speed moving chain sword tooth.

Drawings

Fig. 1 is a schematic structural view of a right box body.

Fig. 2 is a partially enlarged view of fig. 1.

Fig. 3 is an exploded view of the right box installation.

Fig. 4 is a schematic structural view of the left case.

Fig. 5 is a left side view of the negative pressure nozzle mounting position.

Reference numerals: the device comprises a bearing mounting area 1, a right box body connecting area 2, a carburetor mounting area 3, a negative pressure nozzle 4, a bearing hole 5, a piston cylinder body 6, a heat dissipation cavity 7, a negative pressure nozzle mounting protrusion 8, a piston cylinder connecting part 9, a negative pressure nozzle mounting part 10, a negative pressure nozzle mounting hole 11, an oil hole 12, a through hole 13, a mounting shaft 14, an oil pipe mounting shaft 15, a partition plate mounting part 16, a bracket mounting part 17, a bracket mounting groove 18, a connecting column 19, a first rib plate 20, a second rib plate 21 and a first connecting stud 22;

The structure comprises a bearing second mounting area 1a, a left box body connecting area 2a, a carburetor second mounting area 3a, a guide clamping groove 4a, an oil outlet cover plate 5a, a diaphragm plate 6a, a clamping protrusion 7a, a stud hole 8a, a locking step 9a, a locking ring 10a, a cover plate mounting hole 11a, a second diaphragm plate mounting portion 12a, a second support mounting portion 13a, a second connecting column 14a, a third rib plate 15a and a fourth rib plate 16 a.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The utility model provides a crankcase box structure, including left box and right box, left side box includes bearing installing zone 1, right side box joining region 2 and carburetor installing zone 3, right side box includes bearing second installing zone 1a, left side box joining region 2a and carburetor second installing zone 3a, left side box joining region 2a and right box joining region 2 are connected, bearing installing zone 1 is connected with bearing second installing zone 1a, carburetor installing zone 3 is connected with carburetor second installing zone 3a, be equipped with direction draw-in groove 4a in left side box joining region 2a, fixed mounting has oil outlet cover plate 5a in direction draw-in groove 4a, direction draw-in groove 4a can effectively pin oil outlet cover plate top, oil outlet cover plate top is gone into the position, fixed firm can avoid the apron elasticity of steel sheet material to retract the friction to high-speed moving chain sword tooth completely.

At left box joining region 2 a's upper end fixedly connected with cross slab 6a, direction draw-in groove 4a is located the connecting portion of cross slab 6a and left box joining region 2a, is equipped with the protruding 7a of joint in direction draw-in groove 4a, and the protruding 7a of joint is used for joint oil-out cover plate 5a, prevents that oil-out cover plate 5a from following roll-off in direction draw-in groove 4 a.

Be equipped with two guide slot 4a on the connecting portion of cross slab 6a and left box joining region 2a, cross slab 6a between two guide slot 4a is arc, and is corresponding, and the top edge of oil outlet apron 5a also is arc, through the setting at circular shape cross slab 6a and circular shape oil-out apron 5a edge, be convenient for carry out mutual positioning to cross slab 6a and oil-out apron 5a, be convenient for with the top edge joint of oil outlet apron 5a in guide slot 4a, improve the installation effectiveness of oil outlet apron.

Be equipped with stud hole 8a in left box joining region 2a, be equipped with locking step 9a in the outside of stud hole 8a, in some preferred modes, locking step 9a sets up on the face of being connected of left box joining region and oil outlet apron 5a, it is preferred, fixedly connected with anti-loosening ring 10a on stud, install stud in the stud hole 8a back, anti-loosening ring 10a installs to locking step 9a in, the rethread oil outlet apron 5a is spacing with the other end of anti-loosening ring, it takes place to become flexible to prevent that stud from taking place, improve the joint strength of stud and right box.

Two stud holes 8a are formed in the left box body connection area 2a, a cover plate installation hole 11a is formed between every two adjacent stud holes 8a, and the oil outlet cover plate 5a is connected with the cover plate installation hole 11a through screws.

The second carburetor mounting area 3a includes a second diaphragm mounting portion 12a and a second bracket mounting portion 13a, the second diaphragm mounting portion 12a is connected to the second bearing mounting area 1a, the second bracket mounting portion 13a is connected to the second diaphragm mounting portion 12a, and a second connecting post 14a is fixedly connected to the inside of the second bracket mounting portion 13 a.

A third rib 15a and a fourth rib 16a are fixedly connected between the second partition mounting part 12a and the second bracket mounting part 13a, one end of the third rib 15a is connected with the second partition mounting part 12a, and the other end of the third rib 15a is connected with the second connecting post 14 a.

The length of the carburetor second mounting area 3a corresponds to the length of the carburetor mounting area 3.

The utility model provides a right box joining region 2 and carburetor installing zone 3 of crankcase left box are fixed connection respectively at the both ends of bearing installing zone 1, fixed mounting has negative pressure mouth 4 in bearing installing zone 1, negative pressure mouth 4 is installed perpendicularly on the vertical lateral wall of bearing installing zone 1, through installing negative pressure mouth 4 on the vertical lateral wall of bearing installing zone, increase the distance between negative pressure mouth 4 and the heat source, change the ambient temperature of negative pressure mouth and negative pressure hose during operation, make the mounted position of negative pressure mouth more reasonable, improve the life-span of receiving of negative pressure mouth, thereby reduce the risk of engine damage.

Bearing installation area 1 includes dead eye 5, piston cylinder body 6 and heat dissipation chamber 7, and piston cylinder body 6 fixed connection is in heat dissipation chamber 7, and dead eye 5 sets up at piston cylinder body 6's intermediate position, and at piston cylinder body 6's lateral wall fixedly connected with negative pressure mouth installation arch 8.

the negative pressure nozzle mounting protrusion 8 comprises a piston cylinder connecting portion 9 and a negative pressure nozzle mounting portion 10, the piston cylinder connecting portion 9 is fixedly connected to the opening position of the piston cylinder body 6, and the negative pressure nozzle mounting portion 10 is fixedly connected to the outer side of the piston cylinder connecting portion 9.

The negative pressure nozzle mounting part 10 is horizontally arranged, a negative pressure nozzle mounting hole 11 is formed in the negative pressure nozzle mounting part 10, correspondingly, a communicated oil hole 12 is formed in the piston cylinder body 6 and the piston cylinder connecting part 9, and the oil hole 12 is connected with the negative pressure nozzle mounting hole 11.

Be equipped with through-hole 13 in the piston cylinder connecting portion, box is connected about being used for on the one hand to the setting of through-hole 13, and on the other hand can play thermal-insulated effect, reduces the heat transfer in the piston cylinder to the negative pressure mouth.

The negative pressure nozzle 4 comprises an installation shaft 14 and an oil pipe installation shaft 15, the installation shaft 14 is fixedly installed in the negative pressure nozzle installation hole 11, and a limiting bulge is arranged on the outer side of the oil pipe installation shaft 15.

The connection surface of the left box body and the right box body is a vertical plane, the included angle between the center line of the oil pipe installation shaft 15 and the connection surface is 50-60 degrees, in some preferred modes, the included angle between the center line of the oil pipe installation shaft 15 and the connection surface is 55 degrees, and the attack angle generated by the 55-degree included angle can enable the negative pressure hose to be smoothly connected between the negative pressure nozzle and the carburetor, so that the negative pressure hose is prevented from being bent, and the installation reasonability of the negative pressure nozzle is further improved.

The center line of the negative pressure nozzle mounting hole 11 is crossed with the center line of the oil hole 12 to form an included angle of 165-175 degrees, and in some preferred modes, the center line of the negative pressure nozzle mounting hole is horizontally arranged, and the center line of the oil hole is obliquely upwards arranged, so that liquid discharged from the oil hole can be sprayed to fill the inner cavity of the whole piston cylinder body.

The carburetor mounting area 3 includes a partition mounting portion 16 and a bracket mounting portion 17, the partition mounting portion 16 is fixedly connected with the heat dissipation chamber 7, the bracket mounting portion 17 is connected with the partition mounting portion 16, a bracket mounting groove 18 is formed in the bracket mounting portion 17, and a connecting column 19 is mounted on the bracket mounting groove 18.

A first rib plate 20 and a second rib plate 21 are arranged in the support mounting groove 18, the first rib plate 20 and the second rib plate 21 are arranged in parallel, a first connecting stud 22 is fixedly connected in the first rib plate 20, one end of the second rib plate 21 is connected with the partition mounting portion 16, and the other end of the second rib plate 21 is connected with the connecting column 19.

In some preferred modes, the curve of the side wall of the heat dissipation cavity 7 is an involute, the radius of the involute is gradually increased from the connecting part of the right box body to the mounting area of the carburetor, the side wall of the heat dissipation cavity is widened to enlarge the proportion of excess air, the side wall of the heat dissipation cavity is simultaneously in compliance with the airflow direction of cooling air and is pressed inwards in an arc shape, and cooling wind with enough equivalent is more aligned to all surfaces capable of dissipating heat on the exhaust side of the cylinder in unit time, so that the aim of keeping heat balance of the forced cooling cylinder is fulfilled.

The integrated support is arranged on the upper end faces of the carburetor mounting area 3 and the carburetor second mounting area 3a, the integrated support is made of plastic with better heat insulation performance, the carburetor and a heat source are mutually isolated through the plastic integrated support, the working problems of the carburetor and a negative pressure nozzle are reduced, and the service life of the engine is effectively prolonged.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Although the terms corresponding to the reference numerals in the figures are used more herein, the possibility of using other terms is not excluded; these terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a crankcase box structure, a serial communication port, including left box and right box, left side box includes bearing installation district (1), right side box joining region (2) and carburetor installation district (3), right side box includes bearing second installation district (1a), left side box joining region (2a) and carburetor second installation district (3a), left side box joining region (2a) and right side box joining region (2) are connected, bearing installation district (1) is connected with bearing second installation district (1a), carburetor installation district (3) are connected with carburetor second installation district (3a), be equipped with direction draw-in groove (4a) in left side box joining region (2a), fixed mounting has oil outlet cover plate (5a) in direction draw-in groove (4 a).

2. A crankcase box structure according to claim 1, wherein a diaphragm plate (6a) is fixedly connected to the upper end of the left box connecting region (2a), a guide groove (4a) is formed in the connecting portion between the diaphragm plate (6a) and the left box connecting region (2a), and a locking protrusion (7a) is formed in the guide groove (4 a).

3. A crankcase housing structure according to claim 2, characterized in that two guiding slots (4a) are provided at the connection of the bulkhead (6a) and the left housing connection area (2a), the bulkhead (6a) between the two guiding slots (4a) is arc-shaped, and correspondingly, the upper edge of the oil outlet cover plate (5a) is also arc-shaped.

4. A crankcase housing structure according to claim 1, characterized in that a stud hole (8a) is provided in the left housing connection area (2a), and a locking step (9a) is provided outside the stud hole (8 a).

5. A crankcase box structure according to claim 4, characterized in that two stud holes (8a) are provided in the left box connection area (2a), a cover plate mounting hole (11a) is provided between two adjacent stud holes (8a), and the oil outlet cover plate (5a) and the cover plate mounting hole (11a) are connected by screws.

6. A crankcase housing arrangement according to claim 1, characterised in that the carburetor second mounting area (3a) comprises a second bulkhead mounting portion (12a) and a second bracket mounting portion (13a), the second bulkhead mounting portion (12a) being connected to the bearing second mounting area (1a), the second bracket mounting portion (13a) being connected to the second bulkhead mounting portion (12a), and a second connecting strut (14a) being fixedly connected within the second bracket mounting portion (13 a).

7. A crankcase housing structure according to claim 6, characterized in that a third rib (15a) and a fourth rib (16a) are fixedly connected between the second bracket mounting portion (13a) and the second partition mounting portion (12a), one end of the third rib (15a) is connected to the second bracket mounting portion (12a), and the other end of the third rib (15a) is connected to the second connecting pillar (14 a).

8. A crankcase housing structure according to claim 1, wherein the carburetor mounting area (3) includes a partition mounting portion (16) and a bracket mounting portion (17), the partition mounting portion (16) is fixedly connected to the heat dissipating chamber (7), the bracket mounting portion (17) is connected to the partition mounting portion (16), a bracket mounting groove (18) is provided in the bracket mounting portion (17), and a connecting post (19) is mounted on the bracket mounting groove (18).

9. A crankcase housing structure according to claim 8, characterized in that a first rib (20) and a second rib (21) are provided in the bracket mounting groove (18), the first rib (20) and the second rib (21) are arranged in parallel, a first connecting stud (22) is fixedly connected in the first rib (20), one end of the second rib (21) is connected with the partition mounting portion (16), and the other end of the second rib (21) is connected with the connecting column (19).

10. A crankcase housing structure according to claim 6 or 8, characterized in that the length of the carburetor second mounting area (3a) corresponds to the length of the carburetor mounting area (3).