CN210615354U

CN210615354U - Cutting device

Info

Publication number: CN210615354U
Application number: CN201921001123.1U
Authority: CN
Inventors: 罗伯特·杜曼尼; 杨俊勇; 陈铭洲; 刘文阳
Original assignee: Chevron HK Ltd
Current assignee: Nanjing Chervon Industry Co Ltd
Priority date: 2019-04-04
Filing date: 2019-06-28
Publication date: 2020-05-26
Anticipated expiration: 2029-06-28
Also published as: CN210615352U; CN210615351U; CN210615349U; CN210615344U; CN111774660A; CN210615350U; CN111774658A; CN111774659A; CN210615353U; CN111774657A; CN210615355U; CN210615343U; CN210615348U

Abstract

The utility model discloses a cutting device, include: a housing formed with a handle portion and an accommodating portion; a cutting part at least partially connected into the accommodating part; a motor disposed in the accommodating part and driving the cutting part; a base plate extending in a base plate plane and for mounting the housing; the cutting part includes: a chain for cutting a workpiece; a guide plate connected to the housing and supporting the chain; the bottom plate is connected with a pressing plate used for pressing the cutting surface, and the pressing plate is provided with a sliding strip parallel to the chain; the slide bar has a first adjusting position and a second adjusting position relative to the chain along a straight line direction perpendicular to the plane of the guide plate; when the slide bar is at a first adjusting position relative to the chain, the slide bar is close to the chain; when the slide bar is in a second adjustment position relative to the chain, the slide bar is away from the chain. The cutting device has flat cutting surface and high cutting quality.

Description

Cutting device

Technical Field

The utility model relates to a cutting device.

Background

The cutting device is used as a combination body combining larger cutting depth of the chain saw and strong power and high precision of the electric circular saw, and finally has the characteristics of large cutting depth and better cutting precision. However, the above cutting device has some disadvantages while combining two kinds of electric tools. Wherein, because cutting means adopts the chain cutting, its cutting plane can produce more burr, leads to the cutting plane unevenness, has reduced cutting quality.

SUMMERY OF THE UTILITY MODEL

For solving the not enough of prior art, the utility model aims to provide a can press the burr and do not disturb the cutting device of cutting.

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

a cutting device, comprising: a housing formed with a handle portion and an accommodating portion; a cutting part at least partially connected into the accommodating part; a motor disposed in the accommodating part and driving the cutting part; a base plate extending in a base plate plane and for mounting the housing; the cutting part includes: a chain for cutting a workpiece; a guide plate connected to the housing and supporting the chain; the bottom plate is connected with a pressing plate used for pressing the cutting surface, and the pressing plate is provided with a sliding strip parallel to the chain; the slide bar has a first adjusting position and a second adjusting position relative to the chain along a straight line direction perpendicular to the plane of the guide plate; when the slide bar is at a first adjusting position relative to the chain, the slide bar is close to the chain; when the slide bar is in a second adjustment position relative to the chain, the slide bar is away from the chain.

Further, the cutting portion is connected to the drive shaft; the pressure plate has a connection port connected to the base plate, the connection port extending in a direction parallel to the drive shaft.

Furthermore, the pressing plate is detachably connected to the bottom plate through a fixing piece, the fixing piece is arranged in the connecting port, and the connecting port is groove-shaped.

Further, the connection port extends in a linear direction perpendicular to the plane of the guide plate.

Further, the pressure plate can be freely switched between the first adjustment position and the second adjustment position within the range of the connection port.

Furthermore, the pressing plate extends in a plane parallel to the plane of the bottom plate, and the sliding strip protrudes out of the plane of the pressing plate and is integrally formed with the pressing plate.

Furthermore, the slide bar extends from one side of the pressure plate close to the guide plate and forms an included angle with the plane of the pressure plate.

Further, the slide bar is smooth and continuous and has an end face parallel to the guide plate.

Furthermore, the pressing plate is formed or connected with a sliding rail capable of realizing displacement at the first adjusting position and the second adjusting position, and the sliding rail extends along a linear direction perpendicular to the plane where the guide plate is located.

Further, the slide is at least partially parallel to the chain in a linear direction perpendicular to the guide plane when the slide is in the first adjustment position relative to the chain.

The utility model discloses an useful part lies in: through the slide bar that sets up the direction that is on a parallel with the chain cutting at the bottom plate for cutting tool is at the cutting in-process, and the cutting plane burr is pushed down, and the cutting plane is level and smooth, and cutting quality is high.

Drawings

Fig. 1 is a perspective view of a cutting device;

FIG. 2 is a perspective view from another perspective of the cutting device of FIG. 1;

FIG. 3 is a perspective view of the cutting device of FIG. 1 received in a base;

FIG. 4 is an exploded view of the cutting assembly and base of FIG. 3;

FIG. 5 is an exploded view of the cutting device of FIG. 4 from another perspective with respect to the base;

FIG. 6 is an exploded schematic view of the base of FIG. 4;

FIG. 7 is an exploded view of the base of FIG. 6 from another perspective;

FIG. 8 is a schematic view of the internal structure of the cutting device of FIG. 1;

FIG. 9 is a sectional view showing the internal structure of the cutting device of FIG. 1;

FIG. 10 is a perspective view of the cutting device of FIG. 1 with the cover removed;

FIG. 11 is an exploded view of the cutting portion of the cutting device of FIG. 10;

FIG. 12 is an enlarged view of a portion of the cutting device of FIG. 11 at A;

FIG. 13 is a perspective view of a limiter of the cutting device of FIG. 12;

FIG. 14 is an exploded schematic view of the lubrication device of the cutting device of FIG. 1;

FIG. 15 is an exploded view from another perspective of the lubrication device of the cutting device of FIG. 14;

FIG. 16 is a partial cross-sectional view of the oil can of the cutting apparatus of FIG. 14;

FIG. 17 is a front view of the cutting device of FIG. 2 with the cover removed;

FIG. 18 is a perspective view of the cutting device of FIG. 17 with the cover removed and a portion of the chain removed;

FIG. 19 is an enlarged view of a portion of the cutting device of FIG. 17 at B;

FIG. 20 is an enlarged fragmentary view of the cutting device of FIG. 18 at C;

FIG. 21 is a perspective view of a tensioning device of the cutting device of FIG. 1;

FIG. 22 is a perspective view of another perspective of the tensioning device of the cutting device of FIG. 21;

FIG. 23 is an exploded view of the cutting portion of the cutting device of FIG. 1;

FIG. 24 is a further exploded view of the cutting portion of the cutting device of FIG. 23;

FIG. 25 is a bottom view of the cutting device of FIG. 1;

FIG. 26 is a perspective view of the cutting device of FIG. 1 with the cutting portion removed;

FIG. 27 is an exploded view of the heel plate and cutting portion of the cutting device of FIG. 1;

FIG. 28 is a plan view of a back plate and guide plate of the cutting assembly of FIG. 24;

FIG. 29 is a perspective view of the adjustment member of the follower plate and cutting portion of the cutting device of FIG. 1 in a first position;

FIG. 30 is a perspective view of the adjustment member of the follower plate and cutting portion of the cutting device of FIG. 1 in a second position;

FIG. 31 is an enlarged fragmentary view of the cutting device of FIG. 29 at D;

FIG. 32 is an enlarged fragmentary view of the cutting device of FIG. 30 at E;

FIG. 33 is an exploded view of an adjustment member of the cutting device of FIG. 1;

FIG. 34 is an enlarged fragmentary view of the cutting device of FIG. 33 at F;

FIG. 35 is a perspective view of the second secondary handle of the cutting device of FIG. 1 mounted in a storage position;

FIG. 36 is a top view of the cutting device of FIG. 1 with the second secondary handle removed;

fig. 37 is a partial enlarged view of the cutting device of fig. 36 at G.

Detailed Description

The cutting apparatus 100 shown in fig. 1 to 2 includes: a housing 11, a cutting part 12, a bottom plate 13 and a control device 14. The housing 11 has a handle portion 110 and an accommodating portion 111, the handle portion 110 is held by a user, and the control device 14 is at least partially disposed on the handle portion 110 and controls the cutting device 100. In fact, the control means 14 comprise a trigger 141, a circuit board or the like, which is distributed inside or outside the housing 11. The accommodating portion 111 is formed with a first accommodating chamber 119 capable of accommodating other components involved in the cutting work. For example, the first receiving cavity 119 may receive at least a portion of the cutting portion 12. In this embodiment, the cutting device 100 is driven by a motor 112, the motor 112 being disposed within the first receiving cavity 119. Of course, the cutting device 100 further includes a circuit board electrically connected to the motor 112, and the circuit board may also be disposed in the first accommodating cavity 119. For the clear explanation of the technical solution of the present invention, the following is also defined as shown in fig. 1: front, back, left, back, top and bottom. The housing 11 is mounted on a base plate 13, and the cutting part 12 is connected to the housing 11 through the base plate 13. In the present embodiment, the bottom plate 13 extends in a bottom plate plane perpendicular to the up-down direction. The housing 11 is further connected to or formed with a first sub-handle 15 that can be held by a user, and when the user operates the cutting device 100, the user holds the handle part 110 with one hand and the first sub-handle 15 with the other hand to perform a cutting operation. The first sub-handle 15 is provided at an intermediate position in the front-rear direction of the housing 11. A second secondary handle 16 is also attached or formed on the base plate 13, the second secondary handle 16 also being operable by a user to operate the cutting device 100 in an alternative gripping manner.

As shown in fig. 3 to 7, the cutting device 100 may be received on a base 17 for storage. Specifically, the base 17 includes: a base 171, a bearing part 172, and a support part 173. The base 171 may be horizontally placed on a plane such as a table or a floor, and the bearing part 172 and the supporting part 173 are mounted on the base 171. The supporting portion 172 is used for directly supporting and receiving the cutting device 100, the base 171 includes a first plane 101 substantially parallel to a horizontal plane, and the supporting portion 172 is formed with a supporting surface 172a for being attached to the bottom plate 13 to support the cutting device 100.

As shown in fig. 4 to 7, the main body portion of the bearing portion 172 extends substantially along a plane obliquely intersecting the first plane 101, and is formed at one end with a connecting end 172b substantially parallel to the first plane 101. The connection end 172b is formed with a protrusion which is engaged with the first groove 171a formed on the base 171, so that the bearing part 172 can be substantially fixed at a fixed position on the base 171. The support portion 173 is used to connect the bearing portion 172 and the base 171 at the same time. A second groove 172c is further formed on a surface of the bearing part 172 near the supporting part 173, and the supporting part 173 is at least partially embedded in the second groove 172c, so as to fix and support the bearing part 172. A third groove 171b for fixing the support part 173 is formed on one surface of the base 171 near the support part 173, and the support part 173 is at least partially inserted into the third groove 171 b. Thus, the base 171 and the carrier portion 172, the base 171 and the support portion 173, and the carrier portion 172 and the support portion 173 are fixed to each other, and three of them are connected to each other and fixed as a single body. The support portion 173 also has or is connected to a locking portion 173a that is locked to the bearing portion 172 and the base 171, respectively. The locking portion 173a protrudes from the plane of the supporting portion 173, and the supporting portion 173, the carrying portion 172 and the base 171 are locked as a whole by a locking member such as a screw. The base 171, the bearing part 172 and the supporting part 173 interact with each other, so that the base 171, the bearing part 172 and the supporting part 173 can form a very stable whole in a splicing state. In fact, in a second plane 102 perpendicular to both the first plane 101 and a straight line extending in the left-right direction, the base 17 has a substantially triangular projection in the left-right direction in the second plane 102. In the present embodiment, the base 17 is further formed with a housing portion 171c for housing the sheath 129. The sheath 129 at least partially covers the cutting portion 12, and prevents the cutting portion 12 from being exposed to the outside in the accommodated state. The receiving portion 171c is specifically two protrusions formed or connected to the base, and cooperates with the supporting portion 173 to form a receiving slot for inserting the sheath 129. It is to be understood that the base 17 is not limited to the above-described connection, and in some preferred embodiments, the base 17 may be integrally formed.

When the user needs to store the cutting device 100, the cutting device 100 can be placed on the bearing surface 172a of the bearing part 172 according to the first assembling direction 103 shown in fig. 4, and when the foremost end of the cutting device 100 slides to the connecting end 172b of the bearing part 172, the cutting device 100 is locked on the base 17 by the locking device 172d disposed on the bearing part 172, thereby completing the storage. At this time, the center of gravity of the cutting device 100 and the base 17 is close to the base 17 or located in the base 17, so that the cutting device 100 and the base 17 can be stably placed on the ground or a work table, and the packaging and transportation of the cutting device 100 are facilitated. It will be appreciated that the locking devices 172d are disposed on both sides of the bearing surface 172a and are staggered to maximize the locking of the cutting device 100. Since the cutting part 12 of the cutting device 100 is long, the base 171 is further formed with a notch 171d for receiving at least a portion of the cutting part 12. In fact, in the stowed position, the cutting portion 12 is always within the notch 171d and does not contact the countertop or the floor. In some preferred embodiments, the locking device 172d may be a snap. In other embodiments, the locking device 172d can be other connecting elements that can be detachably connected.

As shown in fig. 8 to 9, a linear direction extending in the front-rear direction is defined as a first linear 104 direction, and the motor 112 extends substantially in the first linear 104 direction. Specifically, the motor 112, the fan 112a for dissipating heat from the motor 112, and the transmission 113 connected to the motor 112 are sequentially arranged in the first accommodation chamber 119 from the rear to the front. The fan 112a and the transmission 113 are in turn mounted to an output shaft 114, the output shaft 114 extending in the direction of the first line 104 and being substantially parallel to the direction of the first line 104. In the present embodiment, the output shaft 114 is further connected to a guide 112b for guiding the outflow of the cooling air. The guide member 112b is positioned between the fan 112a and the transmission 113. Defining a straight direction extending in the left-right direction as the direction of the second line 105, the transmission 113 comprises a drive shaft 115, the drive shaft 115 extending substantially in the direction of the second line 105. In the present embodiment, the transmission 113 is embodied as a worm gear structure. Specifically, a worm 113a is provided on the output shaft 114, and a worm wheel 113b is provided on the drive shaft 115. By providing the worm gear structure, it is possible to minimize the space occupied by the transmission 113, thereby reducing the space for accommodating the first accommodating chamber 119 of the transmission 113, which in effect reduces the volume of the housing 11 and the size of the cutting device 100 as a whole. Furthermore, by providing a worm gear structure, the axis of the driving shaft 115 is closer to the plane of the base plate in a straight direction perpendicular to the plane of the base plate, so that the chain 121 connected to the driving shaft 115 protrudes more than the same size of the chain 121, and thus has a larger cutting depth. In fact, the distance of the axis of the drive shaft 115 from the plane of the sole plate is greater than or equal to 90mm and less than or equal to 100mm in a linear direction perpendicular to the plane of the sole plate. In addition, the length of the driving shaft 115 from the plane of the base plate in a straight direction perpendicular to the plane of the base plate is equal to or less than the length of the motor 112 from the plane of the base plate, so that the transmission distance of the motor 112 is reduced, and the size of the first receiving chamber 119 for receiving the transmission 113 and the motor 112 can be reduced, further reducing the size of the cutting apparatus 100 as a whole.

It is understood that the output shaft 114 is supported by the first bearing 114a and rotates at a high speed. In the present embodiment, the first bearing 114a provided on the output shaft 114 opens in the first accommodation chamber 119. That is, the housing 11 does not need to separately form a bearing chamber for accommodating the first bearing 114a at the end of the output shaft 114, but only needs to form the fixing end 116 for fixing the first bearing 114a at the position of the first bearing 114 a. The fixing end 116 is disposed inside the housing 11 and does not protrude from the outer surface of the housing 11, i.e., the fixing end 116 does not form a protrusion on the outer surface of the housing 11. By directly disposing the first bearing 114a in the first accommodating cavity 119 and directly exposing the first bearing 114a to the space of the first accommodating cavity 119, on the one hand, the lubricating oil for lubricating the internal structure of the first accommodating cavity 119 can directly act on the first bearing 114a, thereby increasing the fluidity of the lubricating oil in the first accommodating cavity 119 and facilitating the lubrication and heat dissipation of the first bearing 114a, thereby increasing the utilization rate of the lubricating oil and reducing the temperature of the surface of the housing 11 as a whole; on the other hand, the housing 11 does not need to be separately provided or form a bearing chamber for accommodating a bearing, and the structure of the housing 11 is simplified, thereby further reducing the volume of the housing 11 and further reducing the overall size of the cutting apparatus 100 as a whole.

As shown in fig. 10 to 11, one end of the driving shaft 115 is connected to the worm wheel 113b, and the other end thereof is connected to the driving part 115a, and the driving part 115a can drive the chain 121 to rotate to cut the workpiece. A guide plate 122 is also connected to the left side of the housing 11. The guide plate 122 can support the chain 121 such that the chain 121 rotates around the edge of the guide plate 122 under the driving of the driving part 115 a. After the chain 121 is connected to the driving portion 115a, it will generate a relative displacement along the second straight line 105 in the working state, and in order to avoid the chain 121 to be separated from the driving portion 115a, a limiting member 123 is further provided.

As shown in fig. 12, the driving part 115a is embodied in a gear structure in which the width of the tooth grooves 115b of the gear in the direction of the second straight line 105 is greater than the width of the chain 121 in the direction of the second straight line 105. When the cutting device 100 is operated at a high speed, the chain 121 may be shaken from side to side and may press the left stopper 123, so that the stopper 123 may be deformed, and in case that the stopper 123 is seriously deformed, the chain 121 may be separated from the tooth groove 115 b. In the present embodiment, the stopper 123 has a coupling hole 123a that can be mounted to the driving shaft 115 from left to right in the direction of the second straight line 105. The coupling hole 123a is formed around the driving shaft 115 to be closely attached to the driving part 115a, and the stopper 123 is formed with a stopper part 123b engaged with the teeth groove 115 b. Specifically, as shown in fig. 13, the stopper 123 is a disk structure formed around the driving shaft 115. The stopper 123 has a first surface close to the driving portion 115a and a second surface far from the driving portion 115 a. The first surface has a plurality of position-limiting portions 123b, and the position-limiting portions 123b are actually protrusions formed by the second surface being recessed toward the first surface. When the stoppers 123 are connected to the driving shaft 115, each stopper portion 123b thereof is fitted into the tooth groove 115b of the driving portion 115a to form a one-to-one correspondence relationship. It can be understood that the number of the limiting portions 123b may also be less than the number of the tooth slots 115b, and only when the limiting member 123 is installed, the limiting portions 123b are correspondingly disposed in the tooth slots 115 b. It should be explained here that the correspondence relationship between the stopper portions 123b and the spline 115b means that each stopper portion 123b can be fitted into the spline 115b regardless of the relative angular relationship between the stopper 123 and the driving portion 115a when they are fitted thereto. To prevent the stopper 123 from being disengaged from the driving shaft 115, a collar 123c is further provided on the driving shaft 115. The clip 123c is located on a second surface of the stopper 123. The retainer 123c is used to fix the stopper 123 and prevent the stopper 123 from falling off the driving shaft 115.

When the limiting member 123 is connected to the driving shaft 115 and the limiting portion 123b is installed in the tooth slot 115b, the limiting portion 123b can shorten the moving distance of the chain 121 on the driving portion 115a along the direction of the second straight line 105, so as to prevent the chain 121 from generating a large axial force and further separating from the driving portion 115a due to high-speed rotation and large vibration in the operating state. Further, to prevent the stopper portion 123b from restricting the rotation of the chain 121, the surface of the stopper portion 123b is smooth and continuous, and even when the chain 121 contacts the stopper portion 123b, the chain 121 can continue to rotate beyond the surface of the stopper portion 123b in one circumferential direction around the second straight line 105.

The cutting device 100 of the present embodiment is configured to cut a workpiece by driving the chain 121 to rotate by the driving portion 115a, the chain 121 rotates around the guide plate 122, and the chain 121 needs to be lubricated during the cutting process. As shown in fig. 1 and 2, the cutting device 100 lubricates the chain 121 through the lubricating device 18. Specifically, the lubricating device 18 includes: an oil can 181, an oil pump 182 and an oil delivery pipe 183. The oil pot 181 is connected with the oil pump 182 and the oil delivery pipe 183, and the oil pump 182 pumps the oil in the oil pot 181 and delivers the oil to the guide plate 122 or the chain 121 through the oil delivery pipe 183. Specifically, the oil pot 181 is disposed on the upper side of the housing 11 and closely contacts the housing 11. More specifically, the oil can 181 is located between the first sub-handle 15 and the bottom plate 13. It will be appreciated that the oil can 181 may be fixedly attached to or integrally formed with the housing 11. Due to the adoption of the worm gear transmission structure, the shell 11 does not need to form a large accommodating space, and the space occupied by the shell 11 is small. The cutting device 100 as a whole also has additional space for other components. Therefore, the outer surface of the housing 11 can have a large space to accommodate other accessories. In fact, in a rectilinear direction perpendicular to the extension plane of the base plate 13, the oil pot 181 is arranged in the projection range of the housing 11 in the extension plane.

As shown in fig. 14 to 20, a first mounting portion 117 is formed on the upper side of the housing 11, and an oil can 181 is provided on the first mounting portion 117. The first mounting portion 117 is further provided with a protective cover 117b on the upper side, and the protective cover 117b is disposed around the oil can 181 and covers at least a part of the oil can 181. In particular, the first mounting portion 117 extends in a third plane 106 parallel to or intersecting the plane of the base plate 13, which makes full use of the space outside the housing 11. In some preferred embodiments, to accommodate the irregular shape of the outer surface of the housing 11, a partition may be provided on the first mounting portion 117, and a mounting surface is formed on a side of the partition away from the housing 11 for directly mounting the oil can 181. The partition is also formed with a mounting portion on its side adjacent to the housing so as to be adapted to the shape of the outer surface of the housing 11 and fixed in place. The protective cover 117b is formed substantially around the outer wall of the oil can 181 and fixed to the housing 11 after covering the oil can 181. On one hand, the protective cover 117b can protect the oil can 181, and prevent the oil can 181 from being damaged under the action of external force; on the other hand, the protective cover 117b can effectively fix the oil can 181 to the first mounting portion 117, and thus, the oil can 181 itself is prevented from being provided with a fixing device or a fixing member, thereby causing a risk of oil leakage. In the present embodiment, by disposing the oil pot 181 between the first sub-handle 15 and the bottom plate 13, on the one hand, the space below the first sub-handle 15 is effectively used; on the other hand, the oil can 181 can be protected. It will be appreciated that the body of the cutting device 100 may touch the workpiece during operation of the cutting device 100 by a user, and this may cause a safety hazard if the oil can 181 is touched and the oil can 181 is broken in the face of a particular condition or in an unconscious state of the user. And the oil pot 181 is arranged at the lower side of the first auxiliary handle 15, so that the oil pot 181 is always kept in a safer environment, and the probability of damage to the oil pot 181 is reduced. It will be appreciated that the oil pot 181 may be disposed at other suitable locations on the housing 11, and will not be described in detail herein.

As shown in fig. 16, in the present embodiment, an oil outlet (not shown) is provided at a side of the oil can 181 close to the driving shaft 115, the oil outlet is connected to a conduit 181a, and the conduit 181a is located inside the oil can 181. Since the user operates the cutting apparatus 100 at different positions, it is necessary to ensure that the chain 121 is continuously lubricated. Therefore, the flexible guide pipe 181a is arranged, one end of the flexible guide pipe 181a is connected to the oil outlet, the other end of the flexible guide pipe 181a is connected to the oil inlet end 181b, the density of the oil inlet end 181b is greater than that of oil, and the oil inlet end 181b can move freely under the action of gravity, so that the oil inlet end 181b of the guide pipe 181a can be immersed in the oil at any angle, and continuous oil pumping is guaranteed.

As shown in fig. 17, a cover 19 is further disposed at the connection between the chain 121 and the driving portion 115a, and the cover 19 is used for at least partially enclosing the driving portion 115a and is at least partially communicated with the housing 11. As shown in fig. 14, a connection port 118 is formed or connected to a portion of the housing 11 corresponding to the oil outlet of the oil can 181, one end of the connection port 118 is connected to the oil outlet, and the other end is connected to the oil delivery pipe 183. Specifically, as shown in fig. 17 to 20, the connection port 118 penetrates through the body wall of the housing 11, and the oil delivery pipe 183 extends from the connection port 118, is connected to the oil pump 182, and continues from the oil pump 182 to the guide plate 122, thereby directly supplying oil to the chain 121 mounted on the guide plate 122. In fact, the guide plate 122 is hollow and is communicated with the connecting part of the chain 121, so the oil delivery pipe 183 can also directly supply oil to the inside of the guide plate 122, thereby also playing a role in lubricating the chain 121. It is understood that the conduit 181a and the oil delivery pipe 183 may be a single pipe, and one end of the conduit 181a extends into the oil pot 181, and the other end thereof passes through the connection port 118, connects to the oil pump 182, and extends to the guide plate 122. By providing the oil can 181 on the housing 11, the structure of the driving portion 115a is simplified, the overall structure is more compact, and the overall size of the cutting device 100 is further reduced.

As shown in fig. 21 to 22, the cutting part 12 includes: guide plate 122, chain 121, cover plate 124, and support plate 125. The cutting device 100 further includes an encapsulation 126 for encapsulating the cutting portion 12, the encapsulation 126 being used to encapsulate or secure the various parts in the area of the cutting portion 12. The package 126 includes two portions, a through portion 126a and a package portion 126 b. In fact, drive shaft 115 passes through enclosure 126, and drive portion 115a is at least partially surrounded by enclosure 126. A portion of package 126 through which drive shaft 115 passes penetrates in the direction of drive shaft 115 to form a through portion 126 a. The area where the side of the packing 126 away from the housing 11 is sealed forms a packing portion 126b, and the packing portion 126b forms a second accommodation chamber 126 c. The cover plate 124 is formed with a first through hole 124a through which the drive shaft 115 passes, and closes a side of the through portion 126a away from the housing 11. The support plate 125 is mounted to the packing portion 126b and serves to support the guide plate 122. The guide plate 122 is formed with a locking groove 122a, the cutting portion 12 further includes a fastening member 127, the support plate 125 further includes a second through hole 125a through which the fastening member 127 passes, and the packing portion 126b is also formed with a third through hole 126d matching with the second through hole 125a, i.e., when the support plate 125 is connected to the packing portion 126b, the second through hole 125a and the third through hole 126d can pass through in the same linear direction. The fastener 127 fixes the guide plate 122 to the cutting apparatus 100 by passing through the catching groove 122a of the guide plate 122, the second through hole 125a of the support plate 125 and the third through hole 126d of the packing portion 126b, respectively. Specifically, the guide plate 122 is fixed to the housing 11 by fasteners 127. As shown in FIG. 2, the fastener 127 may circumscribe a knob 128, and the user may operate the knob 128 to tighten the guide plate 122 onto the cutting device 100.

As shown in fig. 23 to 24, in order to adjust the guide plate 122 to tension the chain 121, the present embodiment further includes a tensioning device 20. The tensioner 20 comprises an adjustment rod 201 extending substantially in an up-down direction, the adjustment rod 201 comprising a first end 201a and a second end 201 b. The first end 201a extends to the outside of the cover 19, and the second end 201b is located inside the cover 19.

When it is necessary to tension the chain 121 and fix the guide plate 122, the up-down position of the guide plate 122 is first adjusted by the tensioning device 20 to tension the chain 121, and then the guide plate 122 is fixed to the cutting device 100 by the fastening member 127. When it is necessary to release the chain 121, the fastener 127 is first loosened and the guide plate 122 is released, and then the up-down position of the guide plate 122 is adjusted by the tensioner 20, thereby releasing the chain 121. The adjustment rod 201 passes through the packing 126 in the up-down direction and fixes itself through a through-hole provided on the packing 126. The adjusting rod 201 is formed with a threaded section 201c at a portion near the second end 201b, the threaded section 201c is connected with a locking pin 202, and the locking pin 202 forms or is connected with an extension 202a extending to the guide plate 122. The extension 202a is perpendicular to or intersects the adjustment rod 201 and can extend into the fourth through hole 122b formed in the guide plate 122. During the rotation of the adjusting lever 201, the user causes the locking pin 202 located at the spiral section to move upward or downward, so that the extension 202a extending into the fourth through hole 122b of the guide plate 122 moves the guide plate 122 upward or downward, thereby tensioning or releasing the chain 121. Here, the threaded section 201c of the adjustment lever 201 together with the locking pin 202 forms a spindle structure. The tensioning device 20 may also be implemented in other forms to achieve the up and down movement of the guide plate 122, which will not be described herein. The support plate 125 is formed with a first sliding slot 125b through which the extension 202a passes in the left-right direction, and the first sliding slot 125b forms a moving track of the extension 202a when the adjustment lever 201 rotates to drive the extension 202a of the lock pin 202 to move up and down. In fact, the supporting plate 125 is fixedly connected to the packing member 126, and a second sliding slot 126e is formed at a position of the packing portion 126b of the packing member 126 corresponding to the first sliding slot 125b, so that the extending section 202a of the locking pin 202 passes through and can move in the sliding slot 125 b. The first slide groove 125b formed on the support plate 125 has a unique correspondence with the second slide groove 126e formed on the packing portion 126 b. The length of the second sliding groove 126e is equal to or greater than the length of the first sliding groove 125b, so as not to affect the movement of the lock pin 202. In the present embodiment, the first end 201a of the adjustment lever 201 is further connected to or formed with an operating member 201d, and the user controls the adjustment lever 201 to rotate by rotating the operating member 201d, thereby adjusting the tension of the chain 121. Here, it is defined that the adjusting lever 201 is rotated in the first rotating direction to tension the chain 121, and the adjusting lever 201 is rotated in the second rotating direction to release the chain 121. In fact, it is also possible to rotate the adjusting lever 201 in the first rotational direction to release the chain 121 and to rotate the adjusting lever 201 in the second rotational direction to tension the chain 121. Wherein the first rotational direction may be clockwise and the second rotational direction may be counter-clockwise. Of course, the first and second rotational directions may be understood in reverse.

As shown in fig. 1, 22 and 25, in the present embodiment, the cutting device 100 is further formed with a chip discharge passage 21 through which chips can be discharged. Specifically, the debris discharge passage 21 extends from the interior of the housing 11 and communicates with the external debris outlet 211 through a communication between the housing 11 and the housing 19. More specifically, the swarf discharging passage 21 extends to the fan 112a of the motor 112, and when the cutting device 100 performs a cutting operation, chips enter the swarf discharging passage 21 from the cutting portion 12 through the first opening 131 of the base plate 13 and are blown out by the blowing action of the fan 112 a. In some preferred embodiments, the airflow generated by the fan 112a may be divided into a first airflow path and a second airflow path. The first air path is used for dissipating heat of the cutting tool 100, flows through the accommodating portion 111 formed in the housing 11, and flows out from the heat dissipation outlet 111a formed in the surface of the housing 11 after dissipating heat of the motor 112. The second air path flows in the chip discharge passage 21, and when the chips flow through the first opening 131, the chips can enter the chip discharge passage 21 from the front end of the first opening 131 of the bottom plate 13, and after entering the chip discharge passage 21, since the chip discharge passage 21 extends up to the fan 112a, the air flow can be blown out from the chip discharge passage 21, and negative pressure is formed in the chip discharge passage 21, so that the chips are carried out. It will be appreciated that the exhaust port 211 can be externally connected to a vacuum cleaner and can also be used to suck dust. The debris removal channel 21 is also at least partially connected to the heat dissipation outlet 111 a. It will be appreciated that in some preferred embodiments, the exhaust port 211 and the heat sink outlet 111a can both face in the cutting direction, and either the exhaust port 211 or the heat sink outlet 111a can face in the cutting direction. Therefore, the airflow in the shell can not be disturbed by being divided into two paths, and the heat dissipation and dust blowing can be carried out with higher efficiency. It will be appreciated that the exhaust port 211 and the exhaust outlet 111a can be spaced in other orientations without affecting the efficiency of the heat removal and dust blowing.

As shown in fig. 26 to 27, the cutting apparatus 100 of the present embodiment further includes a heel plate 22 for protecting a user. The heel plate 22 is fixedly connected to the housing 11. The follower blade 22 extends along the extension direction of the guide plate 122 and is formed at its distal end with a guard 221 at least partially covering the guide plate 122, and the follower blade 22 is located at the rear side of the guide plate 122 to prevent a user located at the rear side from being cut during rotation of the chain 121. It can be understood that, in the working state, because the front end is directly contacted with the workpiece, the chain 121 has a tendency to move towards the following cutter plate 22 due to the reaction force of the workpiece and the vibration of the chain 121 itself, so as to effectively protect the following cutter plate 22 from being cut by the chain 121, and ensure the safety of the user, thereby ensuring that a safety distance needs to be maintained between the chain 121 and the following cutter plate 22 in the limit state. In addition, during the production and installation of the follower blade 22 and the guide plate 122, there is also an unnecessary error, which results in a small distance between the follower blade 22 and the guide plate 122, thereby causing a safety hazard. Accordingly, the following blade 22 has a predetermined angle deviated from the guide plate 122 during the installation of the following blade 22. In this embodiment, the guide plate 122 also has a predetermined angle of active deflection from the follower blade 22.

As shown in fig. 21 to 22 and 26 to 28, the guide plate 122 is positioned on the cutting device 100 by a support plate 125. The support plate 125 is substantially symmetrical with respect to the line of symmetry 107. The upper and lower sides of the second through hole 125a of the support plate 125 are provided with a first positioning hole 125c and a second positioning hole 125d, respectively. The first positioning hole 125c and the second positioning hole 125d are used to position the support plate 125 onto the package 126. The support plate 125 is prevented from shaking during operation. Preferably, the first positioning hole 125c, the second positioning hole 125d and the second through hole 125a are circular holes, and the centers of the first positioning hole 125c and the second positioning hole 125d are located on the symmetry line 107. In the extending direction of the line of symmetry 107, the first positioning hole 125a is far from the second positioning hole 125 d. The center of the second through hole 125a is located at the right side of the line of symmetry 107. A positioning portion 125e for positioning the guide plate 122 is connected to or formed at the lower end of the second positioning hole 125d, and the positioning portion 125e is a protrusion protruding from the plane where the support plate 125 is located. To accommodate the shape of the receiving slot 122a of the guide plate 122, the positioning portion 125e is preferably provided as a rectangular parallelepiped, which is symmetrical about a central axis 108 passing through itself. In the present embodiment, the center axis 108 of the positioning portion 125e is parallel to and does not overlap the straight line of symmetry 107. In a straight direction perpendicular to both the central axis 108 and the line of symmetry 107, the distance between the central axis 108 and the line of symmetry 107 is equal to or greater than 0.1 mm. More specifically, the central axis 108 is located on the front side of the line of symmetry 107, i.e., the central axis 108 is located on the side of the line of symmetry 107 close to the sliding groove 125 b. It is understood that the positioners 125e are asymmetric with respect to the straight line of symmetry 107, that the distance between the portion of the positioners 125e facing the cutting direction and the straight line of symmetry 107 is L1, and that the distance between the portion of the positioners 125e facing away from the cutting direction and the straight line of symmetry 107 is L2, where L1 is greater than L2. Therefore, when the guide plate 122 is installed, the guide plate 122 is fixed by the supporting plate 125, the supporting plate 125 can effectively fix the guide plate 122, and the guide plate 122 can be away from the follower plate 22 to a preset distance under the condition that the positioning part 125e deviates from the symmetrical straight line 107, so that the minimum distance between the tooth tip of the chain 121 installed on the guide plate 122 and the follower plate 22 is finally realized to be more than or equal to 6mm and less than or equal to 18 mm.

As shown in fig. 27, a guard 221 formed or coupled to the end of the blade 22 at least partially surrounds the guide plate 122 and the chain 121 mounted on the guide plate 122. The guard cover 221 is formed with a third receiving cavity 221a for at least partially receiving the guide plate 122 and the chain 121. The third receiving chamber 221a communicates with the outside, and is formed with a plurality of second openings 221b penetrating the outside. The second opening 221b is used to discharge chips and dust carried into the third accommodation chamber 221a during cutting of the chain 121.

As shown in fig. 29 to 32, the protective cover 221 is further provided with an adjusting member 222 for adjusting the connection relationship between the follower blade 22 and the guide plate 122. The adjustment member 222 has two adjustment positions, a first position and a second position. When the adjusting member 222 is located at the first position, the protective cover 221 and the guide plate 122 are fixed into a whole through the adjusting member 222, so that the rigidity between the two is increased, and the guide plate 122 or the follow cutter plate 22 is prevented from being damaged due to the rigidity problem on the premise that the structure of the guide plate 122 or the follow cutter plate is weak. In fact, a boss 221d is further formed or coupled to the shield 221 at a position corresponding to the regulating member 222. When the adjusting member 222 is in the first position, the boss 221d at least partially overlaps the adjusting member 222 in the extending direction of the adjusting member 222, so that the adjusting member 222 can be engaged to clamp the guide plate 122. When the adjusting member 222 is in the second position, the shield 221 is disengaged from the guide plate 122, which facilitates removal and maintenance of the guide plate 122 and also of the chain 121. Specifically, the adjusting member 222 includes: an adjustment shaft 222a, an elastic member 222b, and a reinforcement ring 222 c. A first mounting hole 221c through which the adjuster 222 can pass is formed in a cover wall of the shield 221, and the first mounting hole 221c penetrates the cover wall of the shield 221. In the present embodiment, since the material forming the shield 221 is thin and has insufficient strength, a reinforcing ring 222c for reinforcing the strength of the region where the first mounting hole 221c is located is provided. The reinforcing ring 222c passes through the first mounting hole 221c and is clamped on the wall of the first mounting hole 221 c. More specifically, the reinforcement ring 222c is formed at one end with a projection that causes the reinforcement ring 222c to have an end surface with a size larger than the first mounting hole 221c, so that the reinforcement ring 222c can penetrate into the first mounting hole 221c from only one end. The adjuster 222 further includes a first catch 222e for securing the reinforcement ring 222 c. The reinforcement ring 222c has a first retaining groove 222d for engaging the first catch 222e, and when the reinforcement ring 222c is inserted into the first mounting hole 221c, the first catch 222e is caught in the first retaining groove 222d, and the reinforcement ring 222c is retained in the first mounting hole 221 c.

It is understood that the reinforcing ring 222c further includes a through hole for the adjusting shaft 222a to pass through, in this embodiment, the adjusting shaft 222a is formed with an external thread structure, and the through hole of the reinforcing ring 222c is formed with an internal thread structure, and the position of the adjusting shaft 222a can be adjusted by the cooperation of the external thread structure and the internal thread structure. Before the adjusting shaft 222a passes through the through hole, an elastic element 222b is further assembled, and the elastic element 222b enables a pretightening force to exist between the adjusting shaft 222a and the reinforcing ring 222c, so that the adjusting shaft 222a is prevented from being separated from the reinforcing ring 222 c. In fact, the adjusting member 222 further includes a second catch 222f, and the adjusting shaft 222a further includes a second limiting groove 222g for engaging the second catch 222 f. After the adjusting shaft 222a passes through the through hole of the reinforcing ring 222c, the second buckle 222f can be clamped to the second limiting groove 222g in the third accommodating cavity 221a, so that the adjusting shaft 222a is further prevented from being loosened in the using process.

As shown in FIG. 33, a second secondary handle 16 of the cutting device 100 is formed or attached to the forward end of the base plate 13, which can be grasped by a user to operate the cutting device 100. It will be appreciated that the first secondary handle 15 may be provided for the user to carry the cutting device 100 and the second secondary handle 16 may be provided for the user to directly grip to operate the cutting device 100. Different operating modes can be suitable for users to deal with different working conditions. As shown in fig. 35, a second mounting portion 132 is provided at a position on the left side of the front end of the bottom plate 13, a second mounting hole 132a is formed in the second mounting portion 132, and the second sub-handle 16 is mounted in the second mounting hole 132 a. In the present embodiment, the second mounting hole 132a is provided with an internal thread structure, and a portion of the second sub-handle 16 mounted to the second mounting hole 132a is provided with an external thread structure, and the second sub-handle 16 is mounted to the second mounting portion 132 by the engagement of the internal thread structure and the external thread structure. In fact, the manner of installation between the second installation portion 132 and the second sub-handle 16 is not limited to the above-mentioned manner, as long as the second sub-handle 16 can be fixed to the second installation portion 132, and the details are not repeated herein. The second mounting portion 132 is actually protruding from the plane of the bottom plate 13, and may be integrally formed with the bottom plate 13 or may be detachably connected thereto. In some preferred embodiments, the second mounting portion 132 is detachably connected to the bottom plate 13, which reduces the manufacturing processes of the bottom plate 13 and the manufacturing cost; on the other hand, if the user operates the cutting device 100 by holding the second sub-handle 16, the second sub-handle 16 is located at a position which actually constitutes a fulcrum position, and when the cutting device 100 is accidentally dropped from a high place, the second sub-handle 16 can play a supporting role, so that most of the momentum of the cutting device 100 is offset, and the cutting device is prevented from being damaged due to dropping and the like. In fact, when the second sub-handle 16 is mounted to the second mounting portion 132, the second sub-handle 16 cooperates with the base plate 13 to form a fall-off prevention surface perpendicular to the cutting direction.

It will be appreciated that since the second secondary handle 16 is disposed at the front end of the base plate 13 and is also disposed at the front end of the chain 121, a sufficient safety distance needs to be provided between the second secondary handle 16 and the chain 121 to prevent the user from being cut by the chain 121. The minimum straight distance from the center of the second connecting hole 132a of the second connecting portion 132 to the tooth tip of the chain 121 is defined as L3, and in the present embodiment, the size of L3 is 120mm or more. At this distance, it is substantially ensured that the user will not be cut by the chain 121 when operating the cutting device 100 by holding the second secondary handle 16.

In addition, when the user does not need to use the second sub-handle 16 or needs to store the cutting device 100, a storage portion 133 is further provided on the bottom plate 13. Specifically, the storage unit 133 is located at a right position of the front end of the bottom plate 13, and may be a female screw hole to which the second sub-handle 16 is applied, and the user can attach the second sub-handle 16 to the female screw hole of the storage unit 133 to complete the storage.

As shown in fig. 36, the cutting apparatus 100 further includes a structure of a pressing plate 23 for improving cutting quality. The pressing plate 23 has a rectangular shape as a whole, and has a connection port 231 connectable to the base plate 13 and a slide 233 extending from the body of the pressing plate 23 and substantially parallel to the chain 121.

In particular, as shown in fig. 37, the platen 23 extends in a plane parallel to the plane of the base plate. The connection port 231 of the pressure plate 23 extends substantially along the second line 105, is substantially slot-shaped and lies within the plane of the pressure plate, i.e. the connection port 231 does not communicate with either side of the pressure plate 23. In fact, the connection port 231 can be regarded as a guide rail, and the pressing plate 23 is fixed to the bottom plate 13 by a fixing member 232, and the relative position of the pressing plate 23 and the chain 121 can be freely adjusted within the range of the guide rail. In some preferred embodiments, the pressure plate 23 is further connected to or formed with a slide rail, which allows the pressure plate 23 to freely slide in the direction of the second line 105. The slide 233 is embodied as a smooth arc protruding out of the plane of the pressing plate 23 and having an upward angle of inclination with respect to the plane of the pressing plate 23, and the end of the slide 233 adjacent to the chain 121 has an end face substantially parallel to the guide plate 122. When the cutting device 100 performs cutting operation, the sliding strip 233 can press the cut surface of the workpiece while the chain 121 cuts the workpiece, so as to prevent the cut surface from being affected by more burrs. In fact, in the present embodiment, the platen 23 has two adjustment positions, i.e., a first adjustment position and a second adjustment position. When the pressing plate 23 is in the first adjustment position, the slide 233 is close to the chain 121, and the slide 233 is at least partially parallel to the chain 121 along a straight line perpendicular to the plane of the guide plate 122, so that the cutting surface can be pressed. When the pressing plate 23 is in the second adjustment position, the slide 233 is away from the chain 121. When the sliding strip 233 is close to the chain 121, the sliding strip 233 can be ensured to be tightly attached to the cutting surface and cannot be clamped by the chain 121 to affect cutting. When the slide bar 233 is far away from the chain 121, the cutting of the chain 121 is not affected.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by adopting equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A cutting device, comprising:

a housing formed with a handle portion and an accommodating portion;

a cutting portion at least partially connected into the receiving portion;

a motor disposed in the receiving part and driving the cutting part;

a base plate extending in a base plate plane and for mounting the housing;

the cutting part includes:

a chain for cutting a workpiece;

a guide plate connected to the housing and supporting the chain;

the method is characterized in that:

the bottom plate is connected with a pressing plate used for pressing a cutting surface, and the pressing plate is provided with a sliding strip parallel to the chain;

the slide bar has a first adjusting position and a second adjusting position relative to the chain along a straight line direction perpendicular to the plane of the guide plate; when the slide bar is in the first adjustment position relative to the chain, the slide bar is close to the chain; when the slide bar is in the second adjustment position relative to the chain, the slide bar is away from the chain.

2. The cutting device of claim 1,

the cutting portion is connected to a drive shaft; the pressure plate has a connection port connected to the base plate, the connection port extending in a direction parallel to the drive shaft.

3. The cutting device of claim 2,

the pressing plate is detachably connected to the bottom plate through a fixing piece, the fixing piece is arranged in the connecting port, and the connecting port is groove-shaped.

4. The cutting device of claim 2,

the connection port extends in a linear direction perpendicular to the plane of the guide plate.

5. The cutting device of claim 2,

within the range of the connection port, the pressure plate can be freely switched between the first adjustment position and the second adjustment position.

6. The cutting device of claim 1,

the pressing plate extends in a plane parallel to the plane of the base plate, and the sliding strip protrudes out of the plane of the pressing plate and is integrally formed with the pressing plate.

7. The cutting device of claim 1,

the sliding strip extends out from one side, close to the guide plate, of the pressing plate and forms an included angle with the plane where the pressing plate is located.

8. The cutting device of claim 1,

the slide bar is smooth and continuous and has an end face parallel to the guide plate.

9. The cutting device of claim 1,

the pressing plate is formed or connected with a sliding rail capable of realizing displacement at the first adjusting position and the second adjusting position, and the sliding rail extends along a linear direction perpendicular to the plane where the guide plate is located.

10. The cutting device of claim 1,

when the slide is in the first adjustment position relative to the chain, the slide is at least partially parallel to the chain along a linear direction perpendicular to the guide plate plane.