CN214489055U - Electric circular saw - Google Patents

Abstract

The utility model discloses an electric circular saw, which belongs to the field of electric tools and comprises a saw blade, an output shaft, a motor, a casing and a handle, wherein the saw blade extends in a cutting plane, the output shaft is used for installing the saw blade, the motor is used for driving the output shaft to rotate around a first axis, the casing is provided with a containing part for containing at least part of the motor, and the handle is fixedly connected with the casing or integrally formed; the electric circular saw further comprises an auxiliary holding assembly detachably connected to the machine shell, the auxiliary holding assembly comprises a main body and an outer wrapping portion, the outer wrapping portion is fixedly connected with the main body or integrally formed, and the outer wrapping portion basically covers the outer surface of the main body. The auxiliary holding component can be formed separately and then connected with the shell during production, so that the processing and the production are convenient; there is no gap between the outer cover and the main body, so that there is no problem of hand clamping, and the hand-held device has good holding feeling.

Description

Electric circular saw

Technical Field

The utility model relates to an electric tool field especially relates to an electric circular saw.

Background

An electric circular saw generally includes a housing, a handle, a base plate for supporting the housing and a saw blade, a motor disposed in the housing, and a circular saw blade connected to the motor and driving the saw blade to rotate.

The existing handle generally comprises a main handle and an auxiliary handle, the auxiliary handle and a machine shell are integrally formed, the machine shell is formed by buckling two parts, a gap exists between the two parts, the auxiliary handle is also formed by buckling the two parts, and when the auxiliary handle is held, the gap between the two parts has the problem of hand clamping.

In order to improve the hand feeling of holding, the handle is generally coated with rubber, the auxiliary handle and the machine shell are integrally formed, so that the rubber coating is inconvenient, and the rubber coating is divided into two parts, so that the problem of clamping hands by gaps cannot be avoided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric circular saw to solve the vice handle that exists among the prior art and casing and be integrated into one piece, lead to the technical problem of gap tong.

As the conception, the utility model adopts the technical proposal that:

an electric circular saw comprising: a saw blade extending in a cutting plane; the output shaft is used for mounting the saw blade; the motor is used for driving the output shaft to rotate around the first axis; a housing formed with an accommodating part for accommodating at least a part of the motor; the handle is fixedly connected with the shell or integrally formed; the electric circular saw further includes: the auxiliary holding component is detachably connected to the shell; the auxiliary holding assembly comprises a main base body and an outer wrapping part, wherein the outer wrapping part is fixedly connected with the main base body or integrally formed, and the outer wrapping part basically covers the outer surface of the main base body.

Further, the main body includes a grip portion extending substantially along a first straight line; the holding part is provided with a first end and a second end which are oppositely arranged in the first straight line direction, and the second end is arranged on the side far away from the saw blade relative to the first end; the distance between the second end and the cutting plane is L1, the distance between the first end and the cutting plane is L2, and the length of the holding part in the extending direction of the holding part is L, wherein L1< L2+ L.

Further, the distance between the second end and the cutting plane is L1, the sum of the distance between the first end and the cutting plane and the length of the grip in the extension direction thereof is L2+ L, wherein，

Further, the distance from the second end to the cutting plane is L1, the sum of the distance from the first end to the cutting plane and the length of the grip in the extension direction thereof is L2+ L, wherein,

further, the main body includes a grip portion extending substantially along a first straight line;

the distance between the gravity center of the electric circular saw and the first straight line is more than or equal to 100mm and less than or equal to 140 mm.

Further, the shell comprises a first shell and a second shell, and the first shell and the second shell are detachably connected; the main body includes a connecting portion; the first shell is provided with a supporting part, and the connecting part is detachably connected with the supporting part.

Further, the auxiliary holding assembly further comprises a fixing piece, and the connecting portion is connected to the supporting portion through the fixing piece.

Further, the handle includes a handle portion at least partially symmetrical about a mid-plane, the mid-plane being substantially perpendicular to the first axis; the main body and the saw blade are respectively arranged on two sides of the middle split surface.

Further, the outer wrapping portion is made of flexible materials.

Further, the main body and the outer wrapping portion are integrally formed through injection molding.

The utility model has the advantages that:

the electric circular saw provided by the utility model has the advantages that the auxiliary holding component can be detachably connected to the casing, and the auxiliary holding component can be separately molded and then connected with the casing during production, so that the electric circular saw is convenient to process and produce; supplementary subassembly of gripping includes main base member and outsourcing portion, outsourcing portion and main base member fixed connection or integrated into one piece, and outsourcing portion covers the surface of main base member basically, does not have the gap, and then does not have the tong problem, has the sense of gripping well.

Drawings

Fig. 1 is a schematic structural diagram of an electric circular saw according to an embodiment of the present invention;

FIG. 2 is a schematic view of the electric circular saw shown in FIG. 1 from another perspective;

FIG. 3 is an exploded view of the electric circular saw shown in FIG. 1;

FIG. 4 is a partial structural plan view of the electric circular saw shown in FIG. 1;

FIG. 5 is a partial structural view of a housing of the electric circular saw shown in FIG. 3;

FIG. 6 is a schematic view of the structure of an auxiliary grip assembly of the electric circular saw shown in FIG. 1;

FIG. 7 is a schematic view of the auxiliary grip assembly of FIG. 6 at another angle;

FIG. 8 is an angled configuration of the main body of the assistive grip assembly shown in FIG. 1;

FIG. 9 is a schematic view of another angled configuration of the primary base shown in FIG. 8;

FIG. 10 is a schematic view of an angle of the outer wrap of the auxiliary grip assembly of FIG. 1;

figure 11 is a schematic view of another angle configuration of the outer wrap shown in figure 10.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

The electric circular saw shown in fig. 1 is a general electric tool that drives a functional member, which may be a saw blade 100, to rotate, so that the electric circular saw cuts various materials, such as wood, plastic, metal, stone, etc., by the rotation of the saw blade 100.

For clarity of explanation of the technical solution of the present application, upper, lower, front, rear, left and right as shown in fig. 1 are defined.

Referring to fig. 1 to 4, the electric circular saw includes: a host 10 and an energy source (not shown) for use with the host 10. The host computer 10 includes: a housing 400, an output assembly, a power assembly, a handle 700, a switch 40, and an auxiliary grip assembly 800.

The housing 400 is formed with an accommodating portion for accommodating various components inside the host 10. Wherein the power assembly is at least partially disposed within the receptacle. Specifically, the housing 400 includes a first housing 401 and a second housing 402, and the first housing 401 and the second housing 402 are detachably connected to form an accommodating portion. The housing 400 forms or is fixedly connected with a handle 700 that can be held by a user. The user can operate the electric circular saw by holding the handle 700. The handle 700 is at least partially a handle portion 70 that is substantially symmetrically disposed about a bisecting plane m that is substantially parallel to the cutting plane a of the saw blade 100. In this embodiment, the median plane m is substantially perpendicular to the left-right direction.

The switch 40 may be mounted on the housing 400, and in particular, the switch 40 may be mounted on the handle portion 70 of the handle 700, such that the switch 40 may be activated with relative ease when a user holds the switch on the handle 700.

The power assembly includes a motor 300, and the motor 300 is coupled to the switch 40, i.e. the switch 40 can drive the motor 300 to move. The motor 300 includes a motor shaft 301 rotatable about a motor axis a. The motor shaft 301 extends substantially in the front-rear direction.

The output assembly is used to output the power of the motor shaft 301 to the saw blade 100. The output assembly includes an output shaft 200 that is drivable by a motor shaft 301 to rotate about a first axis, the saw blade 100 being mounted on the output shaft 200. That is, the motor shaft 301 drives the output shaft 200 to rotate about the first axis, thereby driving the saw blade 100 to rotate in a cutting plane a. In this embodiment, the first axis extends substantially in the left-right direction, and the first axis substantially coincides with the motor axis a.

The energy source is used for providing an energy source for the main machine 10 of the electric circular saw, and the energy source can be alternating current or direct current, such as a portable mobile power supply like a battery pack. In the embodiment, a direct current power supply mode is adopted, specifically, a connection seat 701 for installing a battery pack is formed on the extending end of the handle 700, and the battery pack is connected to the connection seat 701 in a sliding mode along a direction parallel to or coinciding with the bisecting plane m.

As shown in fig. 1, 2 and 5, the auxiliary holding assembly 800 is used for auxiliary holding of a user, the auxiliary holding assembly 800 is detachably connected to the casing 400, and the auxiliary holding assembly 800 is disposed at an end of the casing 400 far away from the handle portion 70. Such that a user may hold the handle 700 in one hand and the auxiliary grip assembly 800 in the other hand while using the same. It should be noted that the detachable connection means that the auxiliary grip assembly 800 is detached from the housing 400 without destroying the housing 400 or the original structure of the auxiliary grip assembly 800, and it should be noted that the detachable connection is explained below. The auxiliary grip assembly 800 includes an auxiliary grip handle 80 that can be gripped by a user, wherein the auxiliary grip handle 80 includes a main body 801 and an outer wrap 802. The main body 801 is coupled to the cabinet 400, the outer cover 802 substantially covers an outer surface of the main body 801, and the outer cover 802 is substantially fixedly coupled or integrally formed with the main body 801.

The above arrangement, that is, the auxiliary grip handle 80 and the housing 400 are separately arranged, it can be understood that the auxiliary grip handle 80 and the housing 400 are two separate components, and the auxiliary grip handle 80 is detachably connected to the housing 400. And present supplementary handle 80 of holding makes things convenient for machine tooling, often set up supplementary handle 80 of holding to attach together by two casings and form, that is to say, supplementary handle 80 of holding and casing 400 integrated into one piece, but set up the later stage like this when main external surface parcel outsourcing portion, also need be two parts with the outsourcing part just can wrap up main body, inconvenient processing promptly, and also there is the gap in the centre that can make supplementary handle 80 of holding, the user is when holding supplementary handle 80 of holding, the palm can be difficult to avoid on the diaphragm to the gap, cause not good experience for the user. The auxiliary holding handle 80 and the casing 400 are arranged separately, so that the casing 400 and the auxiliary holding handle 80 can be directly processed respectively, the problems can be avoided due to the arrangement, and the experience of a user is greatly improved.

The main body 801 and the outer covering portion 802 are integrally molded by injection molding, that is, the outer covering portion 802 is directly molded on the outer surface of the main body 801 and basically covers the outer surface, so that no gap exists, the problem of hand clamping does not exist, and the main body and the outer covering portion 802 have good holding feeling. Further, a plurality of grooves 8016 are provided on the outer surface of the main body 801, and a projection 8022 to be inserted into the grooves 8016 is formed on the inner surface of the outer cover 802. The main body 801 is made of plastic, the outer covering 802 is made of flexible material, and during production of the outer covering 802, the rubber is filled into the groove 8016 to form the protrusion 8022. The protrusion 8022 cooperates with the groove 8016, so that the contact area between the outer cover 802 and the main body 801 is large, and thus the connection between the outer cover 802 and the main body 801 is more stable.

As shown in fig. 5 to 11, the auxiliary grip assembly 800 further includes a supporting portion 900 connected to the auxiliary grip handle 80, and a fixing member for fixing the auxiliary grip handle 80 and the supporting portion 900. The auxiliary grip handle 80 includes: a grip portion 8014 and a connecting portion 8011. The holding portion 8014 is used for a user to hold, the holding portion 8014 is disposed at a front side of the handle 700 relative to the connecting seat 701, and the holding portion 8014 extends substantially along the first straight line direction. The connecting portion 8011 is connected to the holding portion 8014, and the connecting portion 8011 is fixedly connected to the holding portion 8014 or integrally formed therewith. The supporting portion 900 is detachably connected to the connecting portion 8011, and the supporting portion 900 is fixedly connected to the housing 400 or integrally formed therewith. The fixing member is used to connect the support portion 900 and the connecting portion 8011, and is specifically a locking bolt 803.

Threaded holes 901 are formed in the supporting portion 900, countersunk holes 8012 are formed in the connecting portion 8011, the locking bolts 803 penetrate through the countersunk holes 8012 to be in threaded connection with the threaded holes 901, and the heads of the locking bolts 803 are located in the countersunk holes 8012, so that the locking bolts 803 do not protrude out of the surface of the main body 801, and the hand feeling of holding is not affected. Of course, the support portion 900 may be provided with a counter bore 8012, and the connection portion 8011 may be provided with a screw hole 901, which is not limited herein.

Mounting groove 8013 has been seted up to one side of connecting portion 8011, and supporting part 900 can insert in mounting groove 8013 to make connecting portion 8011 fully contact with supporting part 900, make to connect more firmly. The mounting groove 8013 is disposed on the connecting portion 8011 on a side away from the counter bore 8012 and is communicated with the counter bore 8012.

The support 900 is L-shaped, one end of the support is connected to the first housing 401, and the other end of the support is provided with a threaded hole 901. Accordingly, the shape of the mounting groove 8013 of the connecting portion 8011 should be adapted to the shape of the supporting portion 900.

The hardness of the main body 801 is greater than that of the outer cover 802 to play a supporting role, and the outer cover 802 is made of flexible materials to ensure good hand feeling. Specifically, the outer cover 802 may be soft glue.

The holding portion 8014 is approximately perpendicularly connected with the connecting portion 8011, the connecting portion 8011 is detachably connected with the first housing 401, the counter bore 8012 and the mounting groove 8013 are arranged on the connecting portion 8011, and the holding portion 8014 is provided with the weight reduction groove 8015 for processing and injection molding, so that the weight of the auxiliary holding assembly 800 can be reduced. The covering portion 802 covers the outer surfaces of the connecting portion 8011 and the grip portion 8014. The outer shape of the outer cover 802 is substantially the same as that of the main body 801. The counter bore 8012 is disposed on the main body 801, and a relief hole 8021 is disposed on the outer covering portion 802 corresponding to the counter bore 8012, so that the locking bolt 803 can pass through the relief hole.

As shown in fig. 1-3, host 10 further includes a backplane assembly 50 and a shroud assembly 60. The base plate assembly 50 includes a base plate 500, the base plate 500 is used for supporting the main machine 10, an opening 501 through which the saw blade 100 at least partially passes is formed on the base plate 500 so that the saw blade 100 can be extended to a lower side of the base plate 500, the base plate 500 further has an angle plate 502 disposed at a front side of the base plate 500, and a user can rotate the base plate 500 around a first center line by operating the angle plate 502 to adjust a cutting angle of the electric circular saw. The shield assembly 60 includes a fixed shield 601 and a movable shield 602, the fixed shield 601 is fixed with respect to the housing 400, the movable shield 602 is rotatable with respect to the fixed shield 601, and the fixed shield 601 is disposed on the upper side of the bottom plate 500 and connected to the housing 400. An observation port 503 for a user to observe the condition of the saw blade 100 is formed between the fixed shield 601 and the bottom plate 500, and the observation port 503 is disposed between the angle plate 502 and the motor 300. When the user holds the electric circular saw for operation, the user is generally located on the left side of the median plane m, the handle 700 of the electric circular saw is held by the right hand, the auxiliary holding handle 80 of the electric circular saw is held by the left hand, so that the cutting work is performed, and the user can determine the cutting condition of the saw blade 100 by observing the observation port 503. In addition, the main body 801 and the saw blade 100 are respectively disposed on both sides of the median plane m, and specifically, the main body 801 is disposed on the left side of the handle 700, so that the auxiliary grip handle 80 and the handle 700 are not aligned with each other. Can make the user like this when using electric circular saw, can avoid holding handle 80 and casing integrated into one piece with the assistance, the assistance is held handle 80 and is in a straight line with handle 700 basically, makes the assistance hold handle 80 need remove the condition that the health just can observe saw bit 100 through observing mouth 503 by a wide margin when the user need observe saw bit 100 condition, great convenience of user's operation.

As shown in fig. 4, the grip 8014 includes a first end 81 and a second end 82 which are oppositely disposed, the first end 81 and the second end 82 are disposed on both left and right sides of the grip 8014, and the second end 82 is disposed farther away from the blade 100 than the first end 81 in the left-right direction. Wherein the length of the grip 8014 in the direction along the first straight line B is L, the distance from the second end 82 of the grip 8014 to the cutting plane a in the direction along the motor axis a is L1, the distance from the first end 81 to the cutting plane a in the direction along the first straight line B is L2, and the distance L1 from the second end 82 to the cutting plane a is smaller than the sum of the distance L2 from the first end 81 to the cutting plane a and the length L of the grip 8014 in the extending direction thereof, that is: l1< L2+ L. With this arrangement, the user can feel more comfortable when holding the auxiliary grip 700, and the user's feeling of holding during operation can be improved.

In the present embodiment, the ratio of the distance L1 from the second end 82 to the cutting plane a to the sum of the distance L2 from the first end 81 to the cutting plane a and the length L of the grip 8014 in the extending direction thereof is greater than 0.8, that is, the ratio is greater than

Thus, the operation of the user can be more comfortable.

Further, in the present embodiment, the ratio of the distance L1 from the second end 82 to the cutting plane a to the sum of the distance L2 from the first end 81 to the cutting plane a and the length L of the grip 8014 in the extending direction thereof is 0.9 or more and 1 or less, that is, 1 or less

In this way, ergonomics can be made better.

Furthermore, in the front and rear direction, the auxiliary holding handle 80 is disposed between the motor 300 and the angle plate 502, in the up and down direction, the auxiliary holding handle 80 is disposed between the bottom plate 500 and the switch 40, and the distance L1 between the second end 82 of the holding portion 8014 and the cutting plane a is smaller than the distance between the motor shaft 301 and the cutting plane a. The main body 10 constitutes the center of gravity G of the electric circular saw, that is, the electric circular saw in this embodiment does not include an energy source. Wherein, the distance D from the gravity center G of the electric circular saw to the first straight line B is more than or equal to 100mm and less than or equal to 140 mm. The weight of motor 300 accounts for the weight of electric circular saw great, and consequently electric circular saw's focus G is close to motor 300 setting basically, makes portion 8014 that grips be closer to motor shaft 301 through above-mentioned setting, and portion 8014 that grips that also says so is closer to focus G setting, perhaps the user grips supplementary grip handle 80 in the time be closer to electric circular saw's focus G more to be convenient for the user to control electric circular saw, convenience of customers operates, has improved work efficiency. Furthermore, when the distance D from the gravity center G of the electric circular saw to the first straight line B is larger than or equal to 110mm and smaller than or equal to 130mm, the effect is better.

The above embodiments have been described only the basic principles and features of the present invention, and the present invention is not limited by the above embodiments, and is not departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. An electric circular saw comprising:

a saw blade extending in a cutting plane;

an output shaft for mounting the saw blade;

the motor is used for driving the output shaft to rotate around a first axis;

a housing formed with an accommodating part for accommodating at least a part of the motor;

the handle is fixedly connected with the shell or integrally formed;

the method is characterized in that:

the electric circular saw further includes:

the auxiliary holding component is detachably connected to the shell;

the auxiliary holding assembly comprises a main base body and an outer wrapping part, wherein the outer wrapping part is fixedly connected with the main base body or integrally formed, and the outer wrapping part basically covers the outer surface of the main base body.

2. The electric circular saw of claim 1, wherein:

the main body comprises a holding part, and the holding part extends along a first straight line;

the holding part is provided with a first end and a second end which are oppositely arranged in the first straight line direction, and the second end is arranged on the side far away from the saw blade relative to the first end;

the distance between the second end and the cutting plane is L1, the distance between the first end and the cutting plane is L2, the length of the holding part in the extending direction of the holding part is L, wherein L1< L2+ L.

3. The electric circular saw of claim 2, wherein:

the sum of the distance of the first end to the cutting plane and the length of the grip portion in its direction of extension is L2+ L, wherein,

is greater than 0.8.

4. The electric circular saw of claim 3, wherein:

the value of (b) is 0.9 or more and 1 or less.

5. The electric circular saw of claim 1, wherein:

the main body comprises a holding part, and the holding part extends along a first straight line;

the distance between the gravity center of the electric circular saw and the first straight line is more than or equal to 100mm and less than or equal to 140 mm.

6. The electric circular saw of claim 1, wherein:

the shell comprises a first shell and a second shell, and the first shell and the second shell are detachably connected;

the main body includes a connecting portion;

the first shell is provided with a supporting part, and the connecting part is detachably connected with the supporting part.

7. The electric circular saw of claim 6, wherein:

the auxiliary holding assembly further comprises a fixing piece, and the connecting portion is connected to the supporting portion through the fixing piece.

8. The electric circular saw of claim 1, wherein:

the handle includes a handle portion at least partially symmetrical about a bisecting plane, the bisecting plane being substantially perpendicular to the first axis;

the main body and the saw blade are respectively arranged on two sides of the middle split surface.

9. The electric circular saw of claim 1, wherein:

the outer coating part is made of flexible materials.

10. The electric circular saw of claim 1, wherein:

the main base body and the outer wrapping portion are integrally formed through injection molding.

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