CN216306204U

CN216306204U - Oil pump capable of automatically pumping oil and chain saw thereof

Info

Publication number: CN216306204U
Application number: CN202122184383.0U
Authority: CN
Inventors: 陈洁
Original assignee: Zhejiang YAT Electrical Appliance Co Ltd
Current assignee: Zhejiang YAT Electrical Appliance Co Ltd
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2022-04-15
Anticipated expiration: 2031-09-09

Abstract

The utility model relates to an oil pump for automatically pumping oil and a chain saw thereof, which comprises a pump body, an inner chamber and an outer chamber which are arranged in the pump body in a communicated manner, wherein one end of the pump body is provided with an oil inlet and an oil outlet which are arranged in the inner chamber in a communicated manner, a pump shaft is arranged in the inner chamber and the outer chamber in a penetrating manner, one end of the pump shaft, which is close to the oil inlet and the oil outlet, is provided with a D-shaped flat position for controlling the oil inlet and the oil outlet, a motor and a first driving wheel are arranged in the outer chamber, the pump shaft and a motor shaft are arranged side by side, the motor drives the pump shaft to rotate through the first driving wheel, and a guide mechanism for guiding the pump shaft to reciprocate along the axial direction is arranged in the outer chamber. The utility model has the advantages that: the structure and the power of the oil pump are optimally designed and arranged, and the pump shaft and the motor shaft are arranged side by side, so that the structure is compact, the internal space is saved, the size and the weight of the whole oil tank can be controlled, the volume of the oil tank can be increased due to the saved internal space, and the oiling frequency of a user can be reduced; the position of the oil pump can be flexibly adjusted according to the requirements of the appearance size and the weight of the product.

Description

Oil pump capable of automatically pumping oil and chain saw thereof

Technical Field

The utility model relates to an oil pump capable of automatically pumping oil and a chain saw thereof.

Background

A chain saw is a commonly used electric gardening tool, which uses a motor and an engine as power driving devices to drive a cutting part to perform cutting operation on materials such as wood, stone, and the like. The continuous cutting of material is realized to the in-process that needs a saw chain circulation operation in the cutting portion, and the friction can lead to generating heat with link joint and cooperation part production friction, so generally all can set up one set of lubricating system, and lubricating system lubricates the chain all the time at whole cutting process, just so can obtain higher cutting efficiency, so general chain saw all possesses lubricating system.

The common oil pump can be in transmission fit with a power system of a main motor through a transmission structure, and is shown in the attached drawing 6, wherein a is a speed reduction transmission structure, b is a direct drive structure, the oil pump is generally arranged on the axial direction of an output shaft of a chain saw, due to the existence of the transmission structure, one section of structure is designed for transmission according to the transmission requirement of the oil pump, the length of the output shaft is lengthened, the rigidity of the shaft is deteriorated, the size of a machine shell is enlarged due to the enlargement of the axial distance, the whole size of the machine and the used materials are increased, the weight of the machine is increased, and the user experience is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an oil pump for automatically pumping oil, which has a compact structure, saves the internal space and is beneficial to controlling the whole size and weight.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides an oil pump of automatic pump oil, includes the pump body, sets up interior cavity and the outer cavity that sets up at pump body in-circuit, the one end of the pump body is equipped with oil inlet and the oil-out that sets up with interior cavity intercommunication, and the pump shaft is worn to establish in interior cavity and outer cavity, and the one end that the pump shaft is close to oil inlet and oil-out is equipped with the flat position of D type of control oil inlet, oil-out, be equipped with motor and drive wheel I in the outer cavity, the pump shaft sets up side by side with the motor shaft, the motor passes through drive wheel I drive pump shaft rotation, be equipped with the guide mechanism that the guide pump shaft is reciprocating motion along the axial in the outer cavity.

Preferably, the guide mechanism comprises a chute arranged on the pump shaft and a convex rib arranged in the inner cavity, and the chute is clamped on the convex rib to guide the rotating pump shaft to do axial reciprocating motion.

Preferably, the included angles between the oil inlet and the oil outlet and the axis of the pump shaft are 90 degrees.

Preferably, the distance between the oil inlet and the oil outlet and the bottom of the inner chamber is L1, the lift of the inclined groove on the pump shaft is h, and L1/h is 1.5-3.

Preferably, the length of the D-shaped flat on the pump shaft is L2, and L2/h is 2.5-4.

Preferably, the pump body comprises an upper pump body and a lower pump body, the upper pump body is used for fixing the motor and the lower pump body, and the motor is arranged between the upper pump body and the lower pump body.

Preferably, an elastic clamping seat is arranged in the upper pump body, and the motor is clamped on the elastic clamping seat.

Preferably, the motor is provided with a speed reducing mechanism, the speed reducing mechanism comprises a second driving wheel arranged at the tail end of a motor shaft, and the second driving wheel is meshed with the first driving wheel.

After the technical scheme is adopted, the utility model has the following advantages:

when the distance between the pump shaft and the bottom of the inner cavity reaches the minimum distance, the vacancy of the D-shaped flat position is just aligned with the oil inlet of the pump body, the rotating motor drives the first driving wheel to drive the pump shaft to rotate, the guide mechanism is matched with and guides the pump shaft to move towards the direction far away from the bottom of the inner cavity, the volume of the inner cavity is increased, the pressure in the inner cavity is reduced, the pressure in the oil tank is greater than the pressure in the inner cavity, lubricating oil is pressed into the inner cavity of the oil pump, due to the existence of the D-shaped section structure, the oil outlet is in a closed state in the process, the pump shaft rotation guide mechanism reaches an upper dead point, the pump shaft continues to rotate, the D-shaped flat position closes the oil inlet, the oil outlet is opened, the guide mechanism guides the pump shaft to move towards a lower dead point, the volume of the inner cavity is reduced, the lubricating oil is extruded out of the inner cavity and flows out through the oil outlet, the pump shaft continues to rotate, and the guide mechanism reaches a lower dead point, the oil pump rotates in a reciprocating manner to realize automatic oil pumping; the oil pump structure and the power design are newly arranged, so that the distance of the whole oil circuit is shortened, and the arrangement position of the oil pump can be flexibly adjusted according to the requirements of the appearance size and the weight of a product; the pump shaft and the motor shaft are arranged side by side, so that the structure is compact, the internal space is saved, the size and the weight of the whole oil tank can be controlled, the volume of the oil tank can be increased due to the saved internal space, and the oiling frequency of a user can be reduced.

The utility model also provides a chain saw capable of automatically pumping oil, which comprises the oil pump for automatically pumping oil, and further comprises a shell, an oil tank, an oil pump control system and a cutting system, wherein the oil pump and the cutting system are arranged on the shell, the oil pump is positioned between the oil tank and the shell, the oil tank is in butt joint with an oil inlet of the oil pump through a sealing element, the shell is in butt joint with an oil outlet of the oil pump through the sealing element, and the cutting system is communicated with the oil outlet of the oil pump.

the oil way of the oil pump is short, and the oil outlet efficiency is high; and the pump body adopts independent motor drive, and the oil pump is arranged and is not restricted by cutting system and oil pump control system, and the mounted position is nimble.

Drawings

The utility model will be further described with reference to the accompanying drawings in which:

FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 2 is a side cross-sectional view of a first embodiment of the present invention;

FIG. 3 is an exploded view of a first embodiment of the present invention;

FIG. 4 is a schematic view of A, B, C three types of bodies according to one embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a second embodiment of the present invention;

fig. 6 is a background art reference diagram.

Reference numerals:

1. a pump body; 11. an upper pump body; 111. an elastic card holder; 12. a lower pump body; 2. an inner chamber; 3. an outer chamber; 4. an oil inlet; 5. an oil outlet; 6. a pump shaft; 61. d-shaped flat position; 7. a motor; 8. a first transmission wheel; 9. a guide mechanism; 91. a chute; 92. a rib is protruded; 10. a second driving wheel; 20. a housing; 30. an oil tank; 40. a cutting system; 50. and a seal.

Detailed Description

In order to more clearly explain the overall concept of the present invention, the present invention will be further described with reference to the accompanying drawings and specific examples. It is to be understood that the following terms "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," "bottom," and the like are used merely to indicate an orientation or positional relationship relative to one another as illustrated in the drawings, merely to facilitate describing and simplifying the utility model, and are not intended to indicate or imply that the device/component so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore are not to be considered limiting of the utility model.

Example one

An oil pump for automatically pumping oil is shown in figures 1-3 and comprises a pump body 1, an inner chamber 2 and an outer chamber 3 which are arranged in the pump body 1 in a communicated manner, an oil inlet 4 and an oil outlet 5 which are communicated with the inner chamber 2 are arranged at one end of the pump body 1, a pump shaft 6 penetrates through the inner chamber 2 and the outer chamber 3, a D-shaped flat position 61 for controlling oil inlet and outlet is arranged at one end, close to the oil inlet 4 and the oil outlet 5, of the pump shaft 6, a motor 7 and a first driving wheel 8 are arranged in the outer chamber 3, the pump shaft 6 and the motor 7 are arranged side by side, the motor 7 drives the pump shaft 6 to rotate through the first driving wheel 8, and a guide mechanism 9 for guiding the pump shaft 6 to reciprocate along the axial direction is arranged in the outer chamber 3. The first transmission wheel 8 is of a straight gear structure, and the straight gear structure can rotate and simultaneously realize axial movement.

The guide mechanism 9 includes a chute 91 disposed on the pump shaft 6 and a rib 92 disposed in the upper pump body 11, the chute 91 is clamped on the rib 92, and the chute 91 and the rib 92 cooperate to drive the pump shaft 6 to reciprocate along the axial direction under the condition that the pump shaft 6 rotates. So that the pump shaft 6 makes a rotational movement in the pump body 1 and at the same time makes an axial movement in the pump body 1.

The inner chamber 2 is a circular section, and the included angles between the oil inlet 4 and the oil outlet 5 and the axis of the pump shaft 6 are 90 degrees. So that the oil inlet 4 is connected with the inner chamber 2 and the oil outlet 5 is connected with the inner chamber 2. The distance between the oil inlet 4 and the oil outlet 5 and the bottom of the inner cavity 2 is L1, the lift of the inclined groove 91 on the pump shaft 6 is h, and L1/h is 1.5-3. The length of the D-shaped flat position 61 on the pump shaft 6 is L2, and L2/h is 2.5-4. These two values are favorable to control the reserve of sealing oil in the inner chamber 2 of the pump body 1, and ensure the effective sealing between the pump shaft 6 and the inner chamber 2.

Pump body 1 includes upper pump body 11 and lower pump body 12, and upper pump body 11 is used for fixed motor 7 and lower pump body 12, and motor 7 sets up between upper pump body 11 and lower pump body 12. An elastic clamping seat 111 is arranged in the upper pump body 11, and the motor 7 is clamped on the elastic clamping seat 111.

The motor 7 adopts a stepping motor 7, the motor 7 is provided with a speed reducing mechanism, the speed reducing mechanism comprises a second driving wheel 10 arranged at the tail end of a shaft of the motor 7, the second driving wheel 10 is of a straight gear structure, and the second driving wheel 10 is meshed with a first driving wheel 8 on the pump shaft 6 to realize power transmission. The motor 7 is a high-speed motor 7, the torque of the motor 7 is improved by reducing the speed through a speed reducing mechanism, a second transmission wheel 10 is arranged at the tail end of the output of the motor 7, the second transmission wheel 10 is of a straight gear structure, and the straight gear structure is meshed with the first transmission wheel 8 on the pump shaft 6 to achieve power transmission.

The oil pumping process is as follows: as shown in a state in fig. 4, the inclined groove 91 is located at the bottom dead center, the pump shaft 6 reaches the minimum distance from the bottom of the inner chamber 2, the gap of the D-shaped flat position 61 aligns with the oil inlet 4 of the pump body 1, the rotating motor 7 drives the first driving wheel 8, the first driving wheel 8 drives the second driving wheel 10, the second driving wheel 10 drives the pump shaft 6 to rotate, the inclined groove 91 and the convex rib 92 are matched to enable the pump shaft 6 to move in the direction away from the bottom of the inner chamber 2, the volume of the inner chamber 2 is increased, the pressure in the inner chamber 2 is reduced, the pressure in the oil tank 30 is greater than that of the inner chamber 2, the lubricating oil is pressed into the inner chamber 2 of the oil pump, due to the existence of the D-shaped cross-sectional structure, the oil outlet 5 is in a closed state in the process, the pump shaft 6 rotates until the inclined groove 91 reaches the top dead center, as shown in B state in fig. 4, the pump shaft 6 continues to rotate, the D-shaped flat position 61 closes the oil inlet 4, the oil outlet 5 is opened, the inclined groove 91 moves to the bottom dead center under the driving of the convex rib 92, as shown in a state C in fig. 4, the volume of the inner chamber 2 is reduced, and the lubricating oil is extruded out of the inner chamber 2 and flows out through the oil outlet 5; the pump shaft 6 continues to rotate, the chute 91 reaches the bottom dead center under the driving of the convex rib 92, and the oil pump rotates in a reciprocating manner to pump oil as shown in a state A in fig. 4.

Example two

A chain saw capable of automatically pumping oil comprises an oil pump for automatically pumping oil, and further comprises a shell 20, an oil tank 30, an oil pump control system and a cutting system 40, wherein the oil pump and the cutting system 40 are arranged on the shell 20, the oil pump is located between the oil tank 30 and the shell 20, the oil tank 30 is in butt joint with an oil inlet 4 of the oil pump through a sealing element 50, the shell 20 is in butt joint with an oil outlet 5 of the oil pump through the sealing element 50, and the cutting system 40 is communicated with the oil outlet 5 of the oil pump. The oil way is guaranteed to be shortest, the oil outlet efficiency of the oil pump is highest, the system loss is reduced, the distance of the lubricating oil passing through is shortest, the oil outlet time of the oil tank 30 in an empty tank state is greatly shortened, the lubricating oil can reach the lubricating position in the shortest time, the friction loss of the cutting system 40 is reduced, and the working efficiency of the whole machine system is higher.

And (3) motion state:

before the chain saw capable of automatically pumping oil is used, an operator fills lubricating oil in the oil tank 30, the whole oil tank 30 is filled with the added oil, the operator adjusts the external oil pump control system to control the oil pump to be in a maximum oil output state, at the moment, the chain saw is started, the oil can reach the cutting system 40 at the highest speed, and the chain is prevented from heating in an idle-load high-speed state.

Furthermore, the oil pump control system controls the start and stop of the motor 7, which is mainly controlled by the start and stop of the cutting system 40, the cutting system 40 starts to trigger the response of the oil pump control system, so as to drive the oil pump to operate, and meanwhile, the oil pump control system can be forcibly started for a certain time in a special control mode, and is automatically closed after the preset time is reached. The cutting system 40 is mainly used in the state of an empty oil tank 30, oil is fully filled for the first time, and the interior of an oil circuit is not lubricated, so that the cutting system has the advantage of being capable of obtaining due lubricating oil supply immediately after being started, and the situation that no oil is lubricated for a period of time after being started is avoided.

Further, the oil pump control system is provided with a starting switch to directly control the starting or the closing of the oil pump, the starting switch has a forced starting function and is independent of the operation control of the cutting system 40, a special starting control logic is set in the forced starting, the starting control in a normal state is to activate the oil pump to work, and the starting and the closing of the oil pump synchronously work along with the cutting system 40.

Further, the oil pump control system is provided with an oil pump rotating speed adjusting module, an operator can adjust the rotating speed of the oil pump according to working requirements, different rotating speeds can be suitable for the requirements of different use environments, and the oil pump is even closed in some working environments which do not need lubrication, so that the digestion of lubricating oil can be saved to the maximum extent, the effective lubrication of the cutting system 40 is ensured, and the working state of the oil pump is set by the operator.

Other embodiments of the present invention than the preferred embodiments described above will be apparent to those skilled in the art from the present invention, and various changes and modifications can be made therein without departing from the spirit of the present invention as defined in the appended claims.

Claims

1. An oil pump for automatically pumping oil, which is characterized in that: the pump comprises a pump body, an inner chamber and an outer chamber which are arranged in the pump body in a communicated manner, wherein an oil inlet and an oil outlet which are communicated with the inner chamber are formed in one end of the pump body, a pump shaft is arranged in the inner chamber and the outer chamber in a penetrating manner, a D-shaped flat position for controlling the oil inlet and the oil outlet is arranged at one end, close to the oil inlet and the oil outlet, of the pump shaft, a motor and a first driving wheel are arranged in the outer chamber, the pump shaft and a motor shaft are arranged side by side, the motor drives the pump shaft to rotate through the first driving wheel, and a guide mechanism for guiding the pump shaft to reciprocate along the axial direction is arranged in the outer chamber.

2. The oil pump for automatically pumping oil of claim 1, wherein: the guide mechanism comprises a chute arranged on the pump shaft and a convex rib arranged in the inner cavity, and the chute is clamped on the convex rib to guide the rotating pump shaft to do axial reciprocating motion.

3. The oil pump for automatically pumping oil of claim 2, characterized in that: the included angles between the oil inlet and the oil outlet and the axis of the pump shaft are 90 degrees.

4. The oil pump for automatically pumping oil of claim 3, characterized in that: the distance between the oil inlet and the oil outlet and the bottom of the inner cavity is L1, the lift of the inclined groove on the pump shaft is h, and L1/h is 1.5-3.

5. The oil pump for automatically pumping oil of claim 4, wherein: the length of the D-shaped flat on the pump shaft is L2, and L2/h is 2.5-4.

6. The oil pump for automatically pumping oil of claim 1, wherein: the pump body includes the upper pump body and the lower pump body, the upper pump body is used for fixed motor and lower pump body, the motor sets up between the upper pump body and the lower pump body.

7. The oil pump for automatically pumping oil of claim 6, wherein: an elastic clamping seat is arranged in the upper pump body, and the motor is clamped on the elastic clamping seat.

8. The oil pump for automatically pumping oil of claim 7, wherein: the motor is provided with a speed reducing mechanism, the speed reducing mechanism comprises a second driving wheel arranged at the tail end of a motor shaft, and the second driving wheel is meshed with the first driving wheel.

9. An automatic pump oil chain saw which characterized in that: the oil pump for automatically pumping oil of any one of claims 1 to 8, further comprising a housing, an oil tank, an oil pump control system and a cutting system, wherein the oil pump and the cutting system are disposed on the housing, the oil pump is disposed between the oil tank and the housing, the oil tank is in butt joint with an oil inlet of the oil pump through a sealing member, the housing is in butt joint with an oil outlet of the oil pump through a sealing member, and the cutting system is disposed in communication with the oil outlet of the oil pump.