CN106424933B

CN106424933B - Reciprocating saw

Info

Publication number: CN106424933B
Application number: CN201510475774.4A
Authority: CN
Inventors: 仲克穷; 魏淦
Original assignee: Nanjing Chervon Industry Co Ltd
Current assignee: Nanjing Chervon Industry Co Ltd
Priority date: 2015-08-06
Filing date: 2015-08-06
Publication date: 2018-06-19
Anticipated expiration: 2035-08-06
Also published as: CN106424933A; DE202016103905U1

Abstract

The invention discloses a kind of reciprocating saw, including：Motor, reciprocating lever, impulse member, driven gear and driving gear.Motor includes rotor, and reciprocating lever is for installing saw blade, and impulse member is for driving reciprocating member, and for driving impulse member, driving gear can rotate synchronously driven gear with rotor.Driven gear is formed with driving gear to be coordinated.Motor and driving gear are separately positioned on the both sides of reciprocating lever.The present invention reciprocating saw have the advantages that main screw lift balance, operating handle it is good.

Description

Reciprocating saw

Technical Field

The invention relates to a reciprocating saw, in particular to a battery pack with high output voltage and a charger thereof.

Background

The reciprocating saw is a cutting tool, a reciprocating rod is driven to reciprocate through a motor, and a saw blade is mounted to the reciprocating rod and reciprocates along with the reciprocating rod to realize a cutting function.

The reciprocating saw is a hand-held tool, and a user needs to hold the reciprocating saw with one hand or two hands when using the reciprocating saw, so that the balance of the weight of the whole machine is very important. When the balance of the weight of the whole machine is poor, the problems that the operation hand feeling of a user is poor, fatigue is easy to occur and the cutting precision is low are brought.

Disclosure of Invention

A reciprocating saw, comprising: motor, reciprocating lever, impact member, driven gear and driving gear. The motor comprises a rotor, a reciprocating rod is used for installing a saw blade, an impact piece is used for driving the reciprocating piece, a driven gear is used for driving the impact piece, and a driving gear can synchronously rotate along with the motor rotor. The driven gear is matched with the driving gear. The motor and the driving gear are respectively arranged on two sides of the reciprocating rod.

Further, the motor and the driving gear are respectively arranged on two sides of the impact piece.

Further, the number of the reciprocating levers is 2, and the impact member includes: two impact portions and a connecting portion. The two impact parts are used for respectively driving the two reciprocating rods; the connecting part is arranged between the two impact parts to connect the two impact parts into a whole; the motor and the driving gear are respectively arranged at two sides of the connecting part.

Further, the reciprocating saw further comprises a housing for housing the motor; the housing includes a handle portion. The handle part defines a first symmetrical plane; the handle is symmetrical about the first plane of symmetry.

Further, the motor and the driving gear are respectively arranged on two sides of the first symmetrical plane.

Further, the motor and the driven gear are respectively arranged on two sides of the first symmetrical plane.

Further, the direction in which the handle portion extends substantially obliquely intersects the direction of reciprocation of the impact member.

Further, the rotation axis of the driving gear is perpendicular to the first symmetrical plane of the handle portion. The rotation axis of the motor rotor is perpendicular to the first symmetrical plane of the handle part and the reciprocating direction of the impact piece.

Further, the reciprocating saw also comprises a battery pack. The battery pack defines a second symmetry plane; the battery pack is symmetrical about the second plane of symmetry; and the battery pack can be combined to the handle part along the direction obliquely intersecting with the handle part and parallel to the second symmetrical plane;

the motor and the driving gear are respectively arranged on two sides of the second symmetrical plane.

Further, the reciprocating saw also comprises a battery pack. The battery pack can be combined to the handle part along the direction obliquely crossed with the handle part; the motor and the driving gear are respectively arranged at two sides of the gravity center of the battery pack.

Drawings

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

FIG. 2 is an exploded view of a portion of the reciprocating saw of FIG. 1;

FIG. 3 is a schematic view of the reciprocating saw of FIG. 1 with the housing removed;

fig. 4 is a schematic structural view of the reciprocating saw of fig. 1 with a portion of the housing removed.

Detailed Description

The invention is described in detail below with reference to the figures and the embodiments.

Referring to FIG. 1, a reciprocating saw 100 includes a housing 10, a motor 20, and a battery pack 30.

The housing 10 serves as an important component of the reciprocating saw 100 which integrates the various parts. The housing 10 accommodates the motor 20. The housing 10 is further formed with a handle portion 11, and a user operates the reciprocating saw 100 by holding the handle portion 11. A battery pack 30 is connected to the housing 10 to provide power to the motor 20. Generally, the battery pack 30 can be fixed in the housing 10 in a non-detachable manner or can be detachably mounted on the housing 10, where detachable means that the battery pack 30 can be replaced by a user without the aid of tools. Preferably, the battery pack 30 is detachably fixed to the case 10 as shown in fig. 1. When the power of the battery pack 30 is used up, the user does not need to interrupt the operation for charging, and can continue the operation only by replacing a new battery pack 30.

Fig. 2 is an exploded view of a portion of the housing 10, and as shown in fig. 2, the reciprocating saw 100 further includes a saw blade 70, a reciprocating lever 40, a striking member 50, a driving gear 61, and a driven gear 62.

The reciprocating movement of the saw blade 70 performs cutting of a cut workpiece, and the reciprocating lever 40 is used to mount the saw blade 70, and in particular, the saw blade 70 is detachably coupled to the reciprocating lever 40. The striking member 50 serves to drive the reciprocating member to reciprocate the reciprocating lever 40. The driven gear 62 is used to drive the impact member 50; the driving gear 61 can synchronously rotate along with the rotor 21 of the motor 20; the driven gear 62 is matched with the driving gear 61; the motor 20 includes a rotor 21, and the rotor 21 rotates to output power. Under the driving of the motor 20, the driving gear 61 rotates synchronously with the rotor 21 of the motor 20 to drive the driven gear 62 engaged with the driving gear 61 to rotate. The driven gear 62 drives the movement of the impact member 50, and in particular the rotational movement of the impact member 50. The impact member 50 drives the reciprocating rod 40 to move in a reciprocating manner, i.e., the rotating motion of the impact member 50 drives the reciprocating rod 40 to move in a reciprocating manner, and further drives the saw blade 70 connected to the reciprocating rod 40 to move in a reciprocating manner to realize a cutting function.

Generally, the reciprocating saw 100 includes a gear box 60. In the conventional reciprocating saw 100, the motor 20 and the gear box 60 are disposed on the same side of the saw blade 70 of the reciprocating saw 100. Which necessarily results in a greater weight on one side than on the other. The reciprocating saw 100 is a hand-held tool, and a user holds the reciprocating saw 100 for a long time during operation to perform work operations. In the conventional reciprocating saw 100 structure, the weight of one side of the saw blade 70 is larger than that of the other side, the weight of the whole machine is unbalanced, and when a user holds the handle part 11 of the reciprocating saw 100, the side with the heavier weight tends to rotate to one side, so that the cutting precision is reduced, and the operation hand feeling of the user is poor.

In order to solve the problem of balance, a comfortable and stable operation feeling is realized. Preferably, as shown in fig. 3, the gear box 60 and the motor 20 are respectively disposed at both sides of the saw blade 70 of the reciprocating saw 100. Specifically, the gear box 60 includes a gear box housing 63, and the gear box housing 63 houses the drive gear 61 and the driven gear 62. The motor 20 and the driving gear 61 are respectively disposed at both sides of the reciprocating lever 40.

Generally, in the conventional reciprocating saw 100 structure, the motor 20 drives the driving gear 61, the driving gear 61 drives the striking member 50, and then the striking member 50 drives the reciprocating rod 40 to reciprocate. The motor 20, the driving gear 61 and the striking member 50 are sequentially disposed at one side of the saw blade 70. I.e., the drive gear 61, is disposed on one side of the motor 20 and the impact member 50. The balance of the whole weight is poor. Specifically, the motor 20 and the driving gear 61 are preferably provided on both sides of the striker 50.

Generally, the conventional reciprocating saw 100 employs a single saw blade 70 structure, which is inefficient in cutting. In order to improve the cutting efficiency, as a preferable mode, as shown in fig. 2, the reciprocating saw 100 adopts a structure of a double saw blade. The number of the reciprocating levers 40 is 2, and the reciprocating levers 40 include a reciprocating lever 40a and a reciprocating lever 40 b. The two reciprocating levers 40a, 40b are respectively connected to two different saw blades 70a, 70b, the reciprocating lever 40a is connected to the saw blade 70a, and the reciprocating lever 40b is connected to the saw blade 70 b. The impact member 50 includes a connecting portion 52 and two impact portions 51a, 51b, the connecting portion 52 being disposed between the two impact portions 51a, 51b to connect them as a whole; the two striking portions 51a, 51b drive the two reciprocating levers 40a, 40b, respectively. The connecting portion 52 is located substantially at the center of the reciprocating saw 100, and the motor 20 and the driving gear 61 are respectively disposed at both sides of the connecting portion 52.

The handle portion 11 is provided in a substantially symmetrical structure for the user's gripping comfort. As shown in fig. 4, the handle portion 11 defines a first symmetry plane S1. The handle portion 11 is symmetrical about the first symmetry plane S1.

Specifically, the motor 20 and the driving gear 61 are respectively disposed on both sides of the first symmetrical plane S1.

The handle portion 11, the motor 20 and the drive gear 61 are arranged so that the weight on both sides of the first plane of symmetry S1 is substantially balanced when held in a single hand by a user. The weight of the motor 20 is balanced by the weight of the driving gear 61, and imbalance of both sides of the handle part 11 caused by the weight of the motor 20 is reduced. Affecting the use of the user.

More specifically, the motor 20 is heavy relative to the weight of the drive gear 61. The drive gear 61 is not sufficient to fully balance the adverse effects of the weight of the motor 20. To further balance the weight of the motor 20, the driven gear 62 is disposed on the same side as the drive gear 61. That is, the motor 20 and the driven gear 62 are respectively disposed at both sides of the first symmetrical plane S1.

The holding is convenient for the user and the operation is comfortable. As shown in fig. 1, the direction in which the handle portion 11 extends substantially obliquely intersects the reciprocating direction of the striking member 50.

In general, the motor 20 may be disposed above the reciprocating saw 100 in the direction in which the user holds the reciprocating saw 100, i.e., the rotation axis of the rotor 21 of the motor 20 is parallel to the direction of the first plane of symmetry S1 of the handle portion 11. The motor 20 is located above the reciprocating saw 100 and obstructs the view of the user when operated by the user. Preferably, the motor 20 is disposed at a side of the reciprocating saw 100. I.e. the axis of rotation of the rotor 21 of the motor 20 is perpendicular to the first plane of symmetry S1 of the handle portion 11 and the direction of reciprocation of the impact member 50. The rotation axis of the drive gear 61 is perpendicular to the first symmetry plane S1 of the handle portion 11.

Further, as shown in fig. 1, a battery pack 30 is mounted to the handle portion 11 of the reciprocating saw 100. As shown in fig. 4, the battery pack 30 defines a second plane of symmetry S2. The battery pack 30 is symmetrical about the second plane of symmetry S2. Preferably, the first plane of symmetry S1 of the handle 11 is coplanar with the second plane of symmetry S2 of the battery pack 30.

In order to balance the weight of the whole machine, the motor 20 and the battery pack 30 are respectively disposed at both sides of the handle part 11, and specifically, the motor 20 and the battery pack 30 are disposed at both front and rear sides of the handle part 11. The battery pack 30 can be coupled to the handle portion 11 in a direction obliquely intersecting the handle portion 11 and parallel to the second symmetrical plane S2; the motor 20 and the driving gear 61 are respectively disposed at both sides of the second symmetrical plane S2. The battery pack 30 can be coupled to the handle part 11 in a direction obliquely intersecting the handle part 11. The motor 20 and the driving gear 61 are respectively disposed at both sides of the center of gravity of the battery pack 30. Specifically, a plane passing through the center of gravity of the battery pack 30 and perpendicular to the pivot axis of the rotor 21 of the motor 20 is defined as a plane S3. The motor 20 and the pinion gear 61 are disposed on both sides of the plane S3, respectively.

Specifically, as shown in fig. 4, the center of gravity G of the battery pack 30 is preferably located on the first symmetry plane S1 of the handle 11 or the second symmetry plane S2 of the battery pack 30, i.e., the plane S3 is flush with the first symmetry plane S1 or flush with the second symmetry plane S2. Preferably, as shown in fig. 4, the plane S3 is the same plane as the first symmetry plane S1 and the second symmetry plane S2. The arrangement of the gravity center G of the battery pack 30 improves the balance of the weight of the whole machine. Further preferably, the driven gear 62 and the motor 20 are respectively disposed at both sides of the center of gravity of the battery pack 30.

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 using equivalent alternatives or equivalent variations fall within the scope of the present invention.

Claims

1. A reciprocating saw, comprising:

a motor including a rotor;

the reciprocating rod is used for mounting the saw blade;

an impact member for driving the reciprocating member;

a driven gear for driving the impact member;

the driving gear can synchronously rotate along with the motor rotor;

wherein,

the driven gear is matched with the driving gear;

the motor and the driving gear are respectively arranged on two sides of the reciprocating rod.

2. The reciprocating saw as defined in claim 1,

the motor and the driving gear are respectively arranged on two sides of the impact piece.

3. The reciprocating saw as defined in claim 1,

the number of the reciprocating levers is 2,

the impact member includes:

two impact parts for driving the two reciprocating levers, respectively;

a connecting portion disposed between the two striking portions to connect them as a whole;

the motor and the driving gear are respectively arranged on two sides of the connecting part.

4. The reciprocating saw as defined in claim 1,

further comprising:

a housing for accommodating the motor;

the housing includes:

a handle portion defining a first plane of symmetry;

the handle is symmetrical about the first plane of symmetry.

5. The reciprocating saw as defined in claim 4,

the motor and the driving gear are respectively arranged on two sides of the first symmetrical plane.

6. The reciprocating saw as defined in claim 4,

the motor and the driven gear are respectively arranged on two sides of the first symmetrical plane.

7. The reciprocating saw as defined in any one of claims 4 to 6,

the handle part extends in a direction approximately obliquely intersecting with the reciprocating direction of the impact member.

8. The reciprocating saw as defined in any one of claims 4 to 6,

the rotation axis of the driving gear is perpendicular to the first symmetrical plane of the handle part, and the rotation axis of the motor rotor is perpendicular to the first symmetrical plane of the handle part and the reciprocating motion direction of the impact piece.

9. The reciprocating saw as defined in any one of claims 4 to 6,

further comprising:

the battery pack defines a second symmetrical plane;

the battery pack is symmetrical about the second plane of symmetry;

and the battery pack is capable of being coupled to the handle portion in a direction obliquely intersecting the handle portion and parallel to the second plane of symmetry;

10. The reciprocating saw as defined in any one of claims 4 to 6,

further comprising:

a battery pack that is coupled to the handle portion in a direction obliquely intersecting the handle portion;

the motor and the driving gear are respectively arranged on two sides of the gravity center of the battery pack.