Lubricating device for chain saw

Abstract

The utility model relates to a lubricating device for a chain saw, which comprises a lubricating medium storage box, and a lubricating medium outlet is arranged on the lubricating medium storage box. The pump body assembly comprises an inlet part and an outlet part which are in fluid communication; the lubricating medium output pipe is connected with the outlet part, the pump body assembly can drive the lubricating medium to flow into the pump body assembly from the lubricating medium outlet through the inlet part, and the lubricating medium flows to a guide plate and / or a cutting part of the chain saw through the lubricating medium output pipe; a pump body assembly mounting part is arranged on the lubricating medium storage box, the pump body assembly is arranged on the pump body assembly mounting part, and when the pump body assembly is arranged on the pump body assembly mounting part, the inlet part is in butt joint with the lubricating medium outlet. According to the utility model, the inlet part on the pump body assembly is directly butted with the lubricating medium outlet on the lubricating medium storage box, so that the length of a lubricating oil transmission path is reduced, and the oil outlet efficiency is improved.

Description

Technical Field

[0001] The present application, including the embodiments of the present utility model, relates to the technical field of garden tools, and specifically to a lubrication device for a chain saw. Background Art

[0002] During the cutting process of the chain saw, the chain saw blade slides on the guide plate at high speed, and the friction between the chain saw blade and the object being cut and the guide plate generates a large amount of heat, which is very easy to cause wear and affect the service life of the chain and the chain saw. In order to reduce wear and extend the service life of the chain saw, a lubrication device is provided in the existing chain saw, which continuously lubricates the chain saw blade and the guide plate during the chain saw cutting process to reduce the frictional heat generated between the chain saw blade and the object being cut and the guide plate. The lubrication device includes an oil pot, an oil pump and a transmission oil circuit, wherein the transmission oil circuit includes an oil pump connecting seat, an oil inlet hose and an oil outlet hose, and the oil pump connecting seat includes an oil outlet pipeline and an oil inlet pipeline, one end of the oil inlet hose is sleeved with the oil inlet pipeline of the oil pump connecting seat, and the other end is connected to the oil outlet of the oil pot, one end of the oil outlet hose is sleeved with the oil outlet pipeline of the oil pump connecting seat, and the other end is located at the chain saw blade and / or the guide plate. At the same time, an oil pump is also inserted into the oil pump connection seat, and the oil inlet and oil outlet of the oil pump are connected to the oil inlet pipeline and the oil outlet pipeline respectively. The lubricating oil in the oil pot is driven by the oil pump and transmitted to the chain saw blade and / or the guide plate through the transmission oil path to achieve the purpose of lubrication.

[0003] In fact, the length of the oil inlet hose and the oil outlet hose in the above-mentioned lubrication device is generally left with a margin for easy installation. Such a setting lengthens the overall path of the transmission oil circuit, resulting in a slow lubricating oil discharge time and poor lubrication effect. At the same time, the oil pump and the oil pump connector are connected by an interference fit. Given that the oil pump connector is usually made of hard plastic and the oil pump is usually made of metal, the sealing of the joint between the two is reduced after long-term use, and oil leakage may occur. The oil inlet hose and the oil outlet hose connected to the oil pump connector are usually made of soft plastic or rubber. After long-term use, the joints between the oil inlet hose and the oil outlet hose and the oil pump connector are easily enlarged, resulting in reduced sealing and oil leakage. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a lubricating device for a chain saw to solve the problems existing in the prior art.

[0005] In order to achieve the above object, the technical solution of an embodiment provided by the utility model is:

[0006] A lubricating device for a chain saw, comprising:

[0007] A lubricating medium storage box is used to store the lubricating medium. The lubricating medium storage box is provided with a lubricating medium outlet for the lubricating medium to be outputted outwards.

[0008] A pump assembly for pumping a lubricating medium, the pump assembly comprising an inlet portion and an outlet portion in fluid communication;

[0009] a lubricating medium output pipe, used for delivering lubricating medium to the guide plate and / or cutting component of the chain saw, wherein the lubricating medium output pipe is connected to the outlet portion, and the pump body assembly can drive the lubricating medium to flow from the lubricating medium outlet through the inlet portion into the pump body assembly, and then flow to the guide plate and / or cutting component of the chain saw through the lubricating medium output pipe;

[0010] The lubricating medium storage box is provided with a pump assembly mounting portion, and the pump assembly is configured to be disposed on the pump assembly mounting portion. When the pump assembly is disposed on the pump assembly mounting portion, the inlet portion is docked with the lubricating medium outlet.

[0011] In one embodiment, the pump body assembly includes a delivery pump, which is provided with a suction medium port, and the suction medium port is connected to the inlet portion. When the pump body assembly is arranged on the pump body assembly mounting portion, the distance between the orthographic projection of the suction medium port on the horizontal plane and the orthographic projection of the lubricating medium outlet on the horizontal plane is L, where 0mm<L≤30mm, and the horizontal plane is a plane perpendicular to the plumb line.

[0012] In one embodiment, the pump body assembly includes a delivery pump and a pump body mounting seat supporting the delivery pump, and the inlet portion is integrally formed on the pump body mounting seat.

[0013] In one embodiment, the pump body assembly mounting portion is configured as a first mounting groove, the lubricating medium outlet is arranged in the first mounting groove, the pump body mounting seat is arranged in the first mounting groove, the inlet portion on the pump body mounting seat is docked with the lubricating medium outlet in the first mounting groove, and the surface of the pump body mounting seat is lower than or flush with the notch plane of the first mounting groove.

[0014] In one embodiment, the pump body mounting seat is configured as a rubber body, and the delivery pump is interference-fitted on the pump body mounting seat, or the delivery pump and the pump body mounting seat are sealed and connected via a sealing member.

[0015] In one embodiment, the lubrication device further comprises a sealing component, a fitting gap is provided between the inlet portion and the lubricating medium outlet, and the sealing component blocks a passage from the fitting gap to the lubricating medium storage box.

[0016] In one embodiment, the lubricating medium output pipe and the outlet portion are integrally formed.

[0017] In one embodiment, the lubricating medium storage box is further provided with an output pipe mounting portion, the output pipe mounting portion and the pump body assembly mounting portion are located on the same side of the lubricating medium storage box, and the lubricating medium output pipe is provided on the output pipe mounting portion.

[0018] In one embodiment, an output portion is formed at the outlet of the lubricating medium output pipe, and the output pipe mounting portion is provided with a second mounting groove corresponding to the output portion. The output portion is arranged in the second mounting groove and partially protrudes from the groove plane of the second mounting groove.

[0019] In one embodiment, a plug-in structure for assembling with a gear box of the chain saw is formed on the protruding portion of the output portion.

[0020] Compared with the prior art, in the above-mentioned preferred embodiment of the utility model, the inlet portion of the pump body assembly is directly connected to the lubricating medium outlet on the lubricating medium storage box, and the oil inlet hose is abandoned to achieve the purpose of reducing the length of the lubricating medium flow path, thereby reducing the transmission time of the lubricating medium and improving the lubrication effect.

[0021] In the above preferred embodiment of the present invention, the mounting seat is configured as a rubber body. After being assembled with the delivery pump made of metal material, the connection between the two is tightly matched, and the sealing performance is improved.

[0022] In the above preferred embodiment of the utility model, a sealing component is provided between the inlet portion and the lubricating medium outlet, and the outlet portion and the lubricating medium output pipe adopt an integrally formed structure, which solves the problem of multiple lubricating medium leakage points in the lubrication device in the prior art and further improves the overall sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and the description thereof are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the split structure of a lubrication device provided in one embodiment of the present application;

[0026] Figure 2A front view of the overall structure of the lubrication device provided by one embodiment of the present application without the delivery pump;

[0027] Figure 3 for Figure 2 Sectional view in the AA direction;

[0028] Figure 4 A front view of a lubricating medium storage box in a lubricating device provided in an embodiment of the present application;

[0029] Figure 5 A three-dimensional schematic diagram of a pump body mounting seat, a lubricating medium output pipe and an outlet seal in a lubricating device provided in an embodiment of the present application;

[0030] Figure 6 A front view of a pump body mounting seat, a lubricating medium output pipe and an outlet seal in a lubricating device provided in an embodiment of the present application;

[0031] Figure 7 for Figure 6 Cross-sectional view in the BB direction;

[0032] Figure 8 A simplified view of the assembly of an outlet seal and a gear box of a chain saw in a lubrication device provided in an embodiment of the present application;

[0033] Fig. 9 A schematic diagram of the structure of a lubrication device provided in one embodiment of the present application when assembled with a housing of a chain saw.

[0034] Description of reference numerals and components in the drawings:

[0035] 100. Lubrication device;

[0036] 10. Lubricating medium storage box / oil storage box; 101. Lubricating medium outlet / lubricating oil outlet / oil outlet hole; 103. Pump body assembly mounting part / first mounting groove; 105. Limiting strip; 107. Output pipe mounting part; 1071. Giving structure; 1072. Second mounting groove; 10711. Supporting surface;

[0037] 20. Pump body assembly; 201. Inlet part / connector; 203. Delivery pump; 205. Pump body mounting seat; 2051. Lubricating oil passage; 207. Pump body insertion port;

[0038] 30. Lubricating medium output pipe / lubricating oil output pipe;

[0039] 40, output part; 401, waist-shaped step; 403, wedge-shaped connecting block; 405, oil outlet; 407, lap block; 409, plug-in slot;

[0040] 50, sealing component; 501, sealing boss; 503, sealing rib; 505, plug-in guide surface;

[0041] 200, gear box;

[0042] 300. Casing. DETAILED DESCRIPTION

[0043] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described implementation is a partial implementation of the utility model, not all implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0048] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0049] During the cutting process of the chain saw, the chain saw blade slides at high speed on the guide plate. The friction between the chain saw blade and the object being cut and the guide plate will generate a lot of heat, which is very easy to wear, thus affecting the service life of the chain saw blade and the chain saw. For this reason, a lubrication device is often provided in the chain saw to continuously lubricate the chain saw blade and / or the guide plate to reduce frictional heat. Common lubrication devices generally include an oil pot, an oil pump assembly, an oil inlet hose and an oil outlet hose. The oil inlet of the oil pump assembly is connected to the oil pot through the oil inlet hose, and the oil outlet of the oil pump assembly is connected to the oil outlet hose and the outlet of the oil outlet pipe is placed at the chain saw blade and / or the guide plate. The lubricating oil in the oil pot is driven by the oil pump assembly to be transmitted to the chain saw blade and / or the guide plate through the oil inlet hose, the oil outlet hose and other passages to achieve the purpose of lubrication.

[0050] The transmission oil path of the lubricating oil in the above lubricating device includes an oil inlet hose, an oil outlet hose and an internal passage of the oil pump assembly, and the length of the oil inlet hose and the oil outlet hose generally have a margin for easy installation. Such a configuration lengthens the overall path of the transmission oil path, resulting in a slow lubricating oil delivery time, affecting the lubrication effect. To this end, the utility model provides a lubricating device for a chain saw in one embodiment to solve the problem of slow lubricating oil delivery time due to a lengthened transmission path in the prior art.

[0051] The utility model is a lubricating device 100 for a chain saw, comprising a lubricating medium storage box 10 for storing lubricating medium, and a lubricating medium outlet 101 is provided on the lubricating medium storage box 10 for outputting the lubricating medium to the outside, a pump body assembly 20 for pumping the lubricating medium, the pump body assembly 20 comprising an inlet portion 201 and an outlet portion (not shown in the figure) in fluid communication, a lubricating medium output pipe 30 for transmitting the lubricating medium to the guide plate and / or cutting component of the chain saw, and the lubricating medium output pipe 30 is connected to the outlet portion of the pump body assembly 20. The pump body assembly 20 can drive the lubricating medium in the lubricating medium storage box 10 to flow from the lubricating medium outlet 101 through the inlet portion 201 into the pump body assembly 20, and then flow to the guide plate and / or cutting component of the chain saw through the lubricating medium output pipe 30.

[0052] Furthermore, a pump assembly mounting portion 103 is provided on the lubricating medium storage box 10, and the pump assembly 20 is configured to be arranged on the pump assembly mounting portion 103. When the pump assembly 20 is arranged on the pump assembly mounting portion 103, the inlet portion 201 is directly connected to the lubricating medium outlet 101. The lubricating device 100 abandons the oil inlet hose and adopts the method of directly connecting the inlet portion 201 with the lubricating medium outlet 101, thereby reducing the path length of the lubricating medium flowing from the lubricating medium storage box 10 to the pump assembly 20, reducing the transmission time of the lubricating medium, and improving the lubrication effect.

[0053] In the embodiment of the present invention, the lubricating medium can be configured as a lubricating medium with a certain fluidity, such as lubricating oil, lubricating paste, etc. The following takes lubricating oil as an example to describe the specific implementation of the present invention in detail. Correspondingly, the lubricating medium storage box 10 is configured as an oil storage box 10, the lubricating medium outlet 101 is configured as a lubricating oil outlet 101, and the lubricating medium output pipe 30 is configured as a lubricating oil output pipe 30.

[0054] See also Figure 1 to Figure 7 As shown, the lubricating device 100 includes an oil storage tank 10 for storing lubricating oil, a lubricating oil outlet 101 is provided on the oil storage tank 10 for the lubricating oil to be outputted outwardly, a pump assembly 20 for pumping lubricating oil, the pump assembly 20 includes an inlet portion 201 and an outlet portion which are fluidly connected, a lubricating oil output pipe 30 for transmitting lubricating oil to the guide plate and / or cutting component of the chain saw, and the lubricating oil output pipe 30 is connected to the outlet portion of the pump assembly 20. The pump assembly 20 can drive the lubricating oil in the oil storage tank 10 to flow from the lubricating oil outlet 101 through the inlet portion 201 into the pump assembly 20, and then flow to the guide plate and / or cutting component of the chain saw through the lubricating oil output pipe 30. A pump assembly mounting portion 103 is provided on the oil storage tank 10, and the pump assembly 20 is configured to be arranged on the pump assembly mounting portion 103. When the pump assembly 20 is arranged on the pump assembly mounting portion 103, the inlet portion 201 is directly connected to the lubricating oil outlet 101.

[0055] It should be noted that the consideration for the location of the lubricating oil outlet 101 is that when the lubricating device 100 is in working condition, the lubricating oil outlet 101 is preferably located at a low point of the oil storage tank 10, and the lowest point is more preferred, to ensure smooth oil discharge and improve the utilization rate of the lubricating oil.

[0056] The pump body assembly 20 includes a delivery pump 203 and a pump body mounting base 205 supporting the delivery pump 203. A lubricating oil passage 2051 is provided inside the pump body mounting base 205. The inlet portion 201 docking with the lubricating oil outlet 101 is integrally formed on the pump body mounting base 205 and connected to one end of the lubricating oil passage 2051. The other end of the lubricating oil passage 2051 forms the above-mentioned outlet portion on the pump body mounting base 205.

[0057] Since the lubricating oil output pipe 30 is connected to the outlet part, in order to eliminate the oil leakage point at the connection between the two, the lubricating oil output pipe 30 can be optionally integrally formed with the outlet part, that is, the lubricating oil output pipe 30 and the pump body mounting seat 205 are an integrally formed structure.

[0058] In another embodiment, a one-way valve (not shown in the figure) may also be provided in the lubricating oil passage 2051 inside the pump body mounting base 205, and the one-way valve is used to allow the lubricating oil to flow unidirectionally from the inlet portion 201 into the pump body assembly 20, and to flow unidirectionally from the pump body assembly 20 into the lubricating oil output pipe 30.

[0059] See also Figure 1 and Figure 2 As shown, the pump body assembly mounting portion 103 is configured as a first mounting groove 103, the lubricating oil outlet 101 is disposed in the first mounting groove 103, the pump body mounting seat 205 is disposed in the first mounting groove 103, and the inlet portion 201 on the pump body mounting seat 205 is docked with the lubricating oil outlet 101 in the first mounting groove 103.

[0060] Furthermore, the surface of the pump body mounting seat 205 is lower than or flush with the notch plane of the first mounting groove 103, so as to prevent the surface of the pump body mounting seat 205 from protruding from the notch plane of the first mounting groove 103 and affecting the assembly of other parts. It should be noted that the notch is the opening of the first mounting groove 103 for the pump body mounting seat 205 to be inserted.

[0061] In other embodiments, the pump assembly mounting portion 103 may be configured as a mounting protrusion, and a mounting groove or a connecting component is correspondingly configured on the pump assembly 20. Alternatively, the pump assembly mounting portion 103 may be configured as a connecting surface, and a connecting surface is correspondingly configured on the pump assembly 20.

[0062] In another embodiment, a pair of limiting strips 105 are further protruded in the first mounting groove 103, and the two limiting strips 105 are respectively arranged at the upper and lower sides of the integrally formed part of the lubricating oil output pipe 30 and the pump body mounting seat 205, and are in contact with the surface of the pump body mounting seat 205 to simultaneously limit the pump body mounting seat 205 and a part of the lubricating oil output pipe 30. Optionally, the limiting strips 105 are configured as rubber bodies to reduce mechanical damage to the side of the pump body mounting seat 205 and the outer side of the lubricating oil output pipe 30.

[0063] See also Figure 2 , Figure 3 and Figure 5 As shown, the pump body mounting base 205 is provided with a connector 201 protruding at one end of the lubricating oil passage 2051, and the connector 201 is configured as the above-mentioned inlet portion 201, and correspondingly, the lubricating oil outlet 101 is configured as an oil outlet through hole 101. When the pump body mounting base 205 is set in the first mounting groove 103, the connector 201 passes through the oil outlet through hole 101 and is placed inside the oil storage tank 10.

[0064] In addition, the lubricating device 100 further includes a sealing component 50. There is a matching gap between the inlet portion 201 and the lubricating oil outlet 101. The sealing component 50 blocks the passage from the matching gap to the oil storage tank 10, thereby eliminating the oil leakage point between the inlet portion 201 and the lubricating oil outlet 101. Specifically, the sealing component 50 is provided on the outer surface of the connector 201, so that the sealing component 50 can act on the inner wall of the oil outlet through hole 101 to seal the matching gap between the two.

[0065] Of course, the sealing component 50 can also be selectively arranged on the inner side wall of the oil outlet through hole 101. The following is a specific description taking the sealing component 50 arranged on the outer side surface of the connector 201 as an example.

[0066] For ease of description, the end where the connector 201 is integrally formed with the pump body mounting seat 205 is defined as the first end, and the end where the connector 201 extends into the oil storage tank 10 is defined as the second end. The sealing component 50 includes a sealing boss 501 and at least one sealing rib 503. The number of the sealing ribs 503 can be selected according to actual sealing requirements. In this embodiment, the number of the sealing ribs 503 is selected to be two.

[0067] See also Figure 5 As shown, a circle of sealing bosses 501 are evenly protruded on the outer side of the connector 201 near the first end, and a transition is made between the side of the sealing boss 501 facing the second end and the outer side of the connector 201 via an inclined plug-in guide surface 505. At the same time, two sealing ribs 503 are evenly protruded on the outer side of the sealing boss 501, and the height of the sealing ribs 503 relative to the sealing boss 501 is preferably about 0.5 mm.

[0068] When assembling the pump body assembly 20 and the oil storage tank 10, the pump body mounting seat 205 is inserted into the first mounting groove 103 with the connector 201 facing the oil outlet through hole 101, and the connector 201 is continuously moved so that the connector 201 passes through the oil outlet through hole 101 and is placed inside the oil storage tank 10. During the insertion of the connector 201 into the oil outlet through hole 101, the inclined insertion guide surface 505 contacts the inner side wall of the oil outlet through hole 101 to guide the connector 201 to continue to move and insert until the sealing boss 501 and the two sealing ribs 503 thereon are sealed and connected with the inner side wall of the oil outlet through hole 101. At this time, the space formed by the side surfaces opposite to the two sealing ribs 503, the inner side wall of the oil outlet through hole 101, and the outer side surface of the sealing boss 501 together constitutes a sealed space (not shown in the figure) to further improve the sealing effect between the connector 201 and the oil outlet through hole 101.

[0069] Optionally, the side of the oil storage tank 10 with the oil outlet hole 101 is in contact with the side of the pump body mounting seat 205 with the connecting head 201 to improve the sealing and connection effects. Of course, it is also possible to choose not to contact, that is, there is a gap between the side of the oil storage tank 10 with the oil outlet hole 101 and the side of the pump body mounting seat 205 with the connecting head 201, and no special requirements are made.

[0070] See also Figure 3 As shown, the inner diameter of the oil outlet through hole 101 gradually increases from the inside to the outside of the oil storage tank 10, which is intuitively manifested as an inclination angle of 1° to 2° between the horizontal plane and the line connecting the end of the oil outlet through hole 101 located inside the oil storage tank 10 and the end located outside the oil storage tank 10. This setting is to facilitate the removal of the connector 201 from the oil outlet through hole 101.

[0071] In another embodiment, one end of the lubricating oil passage 2051 inside the pump body mounting seat 205 is formed with an oil inlet through hole (not shown in the figure) on the pump body mounting seat 205, and the oil inlet through hole can be configured as the above-mentioned inlet portion 201, and correspondingly, a connector (not shown in the figure) is protruded toward the outside of the oil storage tank 10 at the lubricating oil outlet 101. When the pump body mounting seat 205 is set in the first mounting groove 103, the connector passes through the oil inlet through hole and is placed inside the pump body mounting seat 205. The sealing component 50 can be selectively set on the outer surface of the connector, or on the inner side wall of the oil inlet through hole, as long as it can block the matching gap between the inlet portion 201 and the lubricating oil outlet 101 to the passage inside the oil storage tank 10.

[0072] Furthermore, the pump body mounting seat 205 is configured as a rubber body, and the inlet portion 201 and the lubricating oil output pipe 30 integrally formed with the pump body mounting seat 205 are also considered to be configured as a rubber body together with the pump body mounting seat 205 to reduce the difficulty of molding.

[0073] See also Figure 5 to Figure 7 As shown, the delivery pump 203 is provided with a suction medium port (not shown in the figure), and a pump body plug port 207 is correspondingly provided on the pump body mounting seat 205. The pump body plug port 207 is connected with the lubricating oil passage 2051 inside the pump body mounting seat 205. After the delivery pump 203 made of metal material is plugged into the pump body plug port 207 made of rubber material, the sealing performance of the plug-in place between the two is significantly improved, and the incidence of oil leakage is also significantly reduced. Alternatively, it is possible to consider inserting the delivery pump 203 into the pump body plug port 207, and adding a sealing member between the two to block the gap between the delivery pump 203 and the inner side wall of the pump body plug port 207.

[0074] After the delivery pump 203 and the pump body mounting seat 205 are assembled, the suction medium port on the delivery pump 203 is located in the lubricating oil passage 2051 and communicates with the inlet portion 201. When the pump body assembly 20 is arranged on the pump body assembly mounting portion 103, that is, the pump body mounting seat 205 is arranged in the first mounting groove 103, the inlet portion 201 is docked with the lubricating oil outlet 101, and the distance between the orthographic projection of the suction medium port on the delivery pump 203 on the horizontal plane and the orthographic projection of the lubricating oil outlet 101 on the horizontal plane is L, where 0mm<L≤30mm, and the distance in this embodiment is 3.5mm. It should be noted that the horizontal plane is a plane perpendicular to the plumb line.

[0075] See also Figure 2 and Figure 4 As shown, the oil storage tank 10 is further provided with an output pipe mounting portion 107, and the lubricating oil output pipe 30 is configured to be arranged on the output pipe mounting portion 107. The output pipe mounting portion 107 and the pump body assembly mounting portion 103 are located on the same side of the oil storage tank 10, which facilitates the assembly of the pump body assembly 20, the lubricating oil output pipe 30 and the oil storage tank 10 on the one hand, and on the other hand, the pump body assembly 20 and the lubricating oil output pipe 30 have a fixed mounting position relative to the oil storage tank 10, thereby improving the neatness after assembly and further reducing the overall volume after assembly.

[0076] The output pipe mounting portion 107 is configured to correspond to the lubricating oil output pipe 30 and include a recessed relief structure 1071 on the side of the oil storage tank 10, the relief structure 1071 is connected to the first mounting groove 103, one end of the lubricating oil output pipe 30 is integrally formed with the outlet portion on the pump body mounting seat 205, and the remaining pipe body is placed in the relief structure 1071 through the connection between the relief structure 1071 and the first mounting groove 103. The relief structure 1071 includes at least one supporting surface 10711 in contact with the outer side of the lubricating oil output pipe 30 to support the lubricating oil output pipe 30.

[0077] For further information, see Figure 5As shown, an output portion 40 is further provided at the outlet of the lubricating oil output pipe 30 , ie, at the end not connected to the oil storage tank 10 , and the lubricating oil output pipe 30 delivers lubricating oil to the guide plate and / or cutting component of the chain saw through the output portion 40 .

[0078] The lubricating oil output pipe 30 delivers lubricating oil to the guide plate and / or cutting component of the chain saw through the output part 40, which should be understood as follows: according to actual needs, the output part 40 can be set at a position corresponding to the guide plate, or at a position corresponding to the cutting component, or at an intermediate position where the guide plate and the cutting component cooperate, as long as it is more conducive to lubrication between the guide plate and the cutting component. Optionally, the lubricating oil output pipe 30 and the output part 40 adopt an integrally formed structure to eliminate the risk of oil leakage at the connection between the two.

[0079] Corresponding to the output part 40, the output tube installation position 107 is configured to further include a second installation groove 1072 to accommodate at least part of the output part 40. When the output part 40 is placed in the second installation groove 1072, the output part 40 partially protrudes from the notch plane of the second installation groove 1072, and a plug-in structure for assembling with the gear box 200 of the chain saw is also formed on the protruding part. It should be noted that the notch is an opening of the second installation groove 1072 for the output part 40 to be inserted.

[0080] See also Figure 5 and Figure 8 As shown, the output part 40 is provided with an oil outlet passage (not shown in the figure) connected to the lubricating oil output pipe 30, so that the lubricating oil flows from the lubricating oil output pipe 30 into the output part 40 and finally flows to the guide plate and / or cutting part of the chain saw. The output part 40 includes a waist-shaped step 401 and a wedge-shaped connecting block 403. The waist-shaped step 401 is provided with an oil outlet 405 connected to the oil outlet passage. The oil outlet 405 is placed on the guide plate or the cutting part so as to supply oil to the guide plate and / or the cutting part. The waist-shaped step 401 is connected to the lubricating oil output pipe 30 through the wedge-shaped connecting block 403. The waist-shaped step 401 and the wedge-shaped connecting block 403 adopt an integrally formed structure to eliminate the risk of oil leakage at the connection between the two. When the output part 40 is placed in the second mounting groove 1072, the waist-shaped step 401 and part of the wedge-shaped connecting block 403 protrude from the notch plane of the second mounting groove 1072.

[0081] A bridge block 407 parallel to the waist-shaped step 401 is extended from the portion of the wedge-shaped connecting block 403 protruding from the notch plane of the second mounting slot 1072. A gap is formed between the bridge block 407 and the waist-shaped step 401 so that a plug-in slot 409 is formed therebetween. The plug-in slot 409 constitutes the above-mentioned plug-in structure. The gear box 200 in the chain saw can be inserted into the plug-in slot 409 through a plug-in component to be assembled with the output part 40.

[0082] The structure of the lubricating device 100 provided in the embodiment of the utility model after being assembled with the housing 300 of the chain saw is shown in FIG. Fig. 9 As shown. The chain saw at least includes a housing 300, a guide plate and a cutting component, wherein the cutting component is wound on the guide plate, the guide plate is placed in the housing 300 and at least partially extends to the outside of the housing 300. During the use of the chain saw, the cutting component slides on the guide plate at high speed and contacts the object to be cut to complete the cutting operation. However, in the lubrication device of the existing chain saw, part of the oil inlet hose and / or the oil outlet hose is exposed to the outside of the housing, and the oil inlet hose and / or the oil outlet hose are easily mechanically damaged, and long-term sunlight exposure will also cause material aging, affecting the normal operation of the lubrication device. In order to avoid the above situation, the lubrication device 100 is completely placed inside the housing 300 to output lubricating oil to the guide plate and / or cutting component of the chain saw. At the same time, the box body part of the oil storage tank 10 without the pump body assembly mounting part 103 and the output pipe mounting part 107 is also used as a part of the housing 300, which simplifies the internal structure of the chain saw and is conducive to the miniaturization and lightweight of the product.

[0083] In order to facilitate understanding of the working principle of the lubricating device 200, the chain saw cutting process is used as an example for explanation. When the cutting part slides on the guide plate at high speed and contacts the object to be cut, the delivery pump 203 in the pump body assembly 20 continues to pump oil, so that the lubricating oil in the oil storage tank 10 enters the lubricating oil passage 2051 inside the pump body mounting seat 205 from the lubricating oil outlet 101 through the connector 201, i.e., the inlet portion 201, and flows to the guide plate and / or cutting part of the chain saw through the lubricating oil output pipe 30 and the output portion 40, so as to achieve the purpose of continuous oiling and lubrication.

[0084] It should be noted that the oil pumping method of the delivery pump 203 can be set to electric or pneumatic oil pumping, using a pressing pump head or a rubber membrane to pump oil. The object to be cut can be but is not limited to wood, rubber blocks, plastic blocks, etc., and the cutting part is a chain saw blade.

[0085] The above description of the disclosed embodiments enables professionals in the field to implement or use the utility model. Various modifications to these embodiments will be apparent to professionals in the field, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A lubricating device for a chain saw, characterized in that: include A lubricating medium storage box is used to store the lubricating medium. The lubricating medium storage box is provided with a lubricating medium outlet for the lubricating medium to be outputted outwards. A pump assembly for pumping a lubricating medium, the pump assembly comprising an inlet portion and an outlet portion in fluid communication; a lubricating medium output pipe, used for delivering lubricating medium to the guide plate and / or cutting component of the chain saw, wherein the lubricating medium output pipe is connected to the outlet portion, and the pump body assembly can drive the lubricating medium to flow from the lubricating medium outlet through the inlet portion into the pump body assembly, and then flow to the guide plate and / or cutting component of the chain saw through the lubricating medium output pipe; The lubricating medium storage box is provided with a pump assembly mounting portion, and the pump assembly is configured to be disposed on the pump assembly mounting portion. When the pump assembly is disposed on the pump assembly mounting portion, the inlet portion is docked with the lubricating medium outlet.

2. A lubricating device for a chain saw according to claim 1, characterized in that: The pump assembly includes a delivery pump, the delivery pump is provided with a suction medium port, the suction medium port is communicated with the inlet portion, when the pump assembly is arranged on the pump assembly mounting portion, the distance between the orthographic projection of the suction medium port on the horizontal plane and the orthographic projection of the lubricating medium outlet on the horizontal plane is L, wherein 0mm<L≤ 30mm, the horizontal plane is a plane perpendicular to the plumb line.

3. A lubricating device for a chain saw according to claim 1, characterized in that: The pump body assembly comprises a delivery pump and a pump body mounting seat supporting the delivery pump, and the inlet portion is integrally formed on the pump body mounting seat.

4. A lubricating device for a chain saw according to claim 3, characterized in that: The pump body assembly mounting portion is configured as a first mounting groove, the lubricating medium outlet is arranged in the first mounting groove, the pump body mounting seat is arranged in the first mounting groove, the inlet portion on the pump body mounting seat is docked with the lubricating medium outlet in the first mounting groove, and the surface of the pump body mounting seat is lower than or flush with the notch plane of the first mounting groove.

5. A lubricating device for a chain saw according to claim 3, characterized in that: The pump body mounting seat is configured as a rubber body, and the delivery pump is interference-fitted on the pump body mounting seat, or the delivery pump and the pump body mounting seat are sealed and connected via a sealing member.

6. A lubricating device for a chain saw according to claim 1, characterized in that: The lubricating device further includes a sealing component, a fitting gap is provided between the inlet portion and the lubricating medium outlet, and the sealing component blocks a passage from the fitting gap to the lubricating medium storage box.

7. A lubricating device for a chain saw according to claim 1, characterized in that: The lubricating medium output pipe is integrally formed with the outlet portion.

8. A lubricating device for a chain saw according to claim 1 or 7, characterized in that: The lubricating medium storage box is also provided with an output pipe mounting portion, the output pipe mounting portion and the pump body assembly mounting portion are located on the same side of the lubricating medium storage box, and the lubricating medium output pipe is arranged on the output pipe mounting portion.

9. A lubricating device for a chain saw according to claim 8, characterized in that: An output portion is formed at the outlet of the lubricating medium output pipe, and a second mounting groove is provided on the output pipe mounting portion corresponding to the output portion. The output portion is arranged in the second mounting groove and partially protrudes from the groove plane of the second mounting groove.

10. A lubricating device for a chain saw according to claim 9, characterized in that: A plug-in structure for assembling with the gear box of the chain saw is formed on the protruding portion of the output part.

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