Double-hand saw with electronic brake

Abstract

The double-hand saw with the electronic brake comprises a main machine shell, a motor, a saw plate, a chain saw blade, a battery bin, a battery pack, a front handle and a rear handle, the main machine shell comprises a left machine shell and a right machine shell, a waterproof cover is arranged on the upper side of the battery bin, a connecting arm is arranged on the side, close to the rear handle, of the waterproof cover, and a rotating sleeve is arranged on the lower side of the connecting arm. The left machine shell and the right machine shell are each provided with a rotating shaft, a first boss is arranged on the left machine shell and located on the side, away from the rotating shaft, of the battery bin, a first cavity is formed in the first boss, a second boss in butt joint with the first boss is arranged on the right machine shell, a second cavity is formed in the second boss, and a connecting sleeve is arranged in the first cavity. An inner threaded sleeve is arranged in the second cavity, a connecting bolt is arranged on the first boss, clamping strips are arranged on the inner walls of the upper sides of the first cavity and the second cavity, an elastic plate is arranged on the side, away from the connecting arm, of the waterproof cover, and locking strips used for abutting against the lower sides of the clamping strips are arranged at the lower end of the elastic plate.

Description

Technical Field

[0001] The utility model belongs to the technical field of double-handed saws, and particularly relates to a double-handed saw with electronic brakes. Background Art

[0002] The two-handed saw is a common woodworking tool, which is mainly used for processing and cutting wood. Because it is relatively heavy, it usually needs to be held by both hands at the same time.

[0003] At present, a Chinese patent with publication number CN105766403A and publication date July 20, 2016 discloses an electric chain saw with a two-handed grip linkage lever locking vibration-damping handle, including a body with a sharp wedge, a cover with a sharp wedge, a bow-back blade chain saw blade driven by a permanent magnet motor, a chain saw bracket with a sharp wedge and a cubic parabola, a deep-display lamp, a lithium battery plug-in box, and a rope tube extension rod; the body with a sharp wedge and the cover with a sharp wedge constitute the body, the outside of the body is provided with a vibration-damping handle, the outside of the body is also provided with the above-mentioned deep-display lamp and the rope tube extension rod; the upper part of the body is provided with a lithium battery plug-in box for easy plugging and unplugging.

[0004] This electric chain saw with a two-handed grip linkage lever locking vibration-damping handle uses a battery pack to power a permanent magnet motor, thereby driving the chain saw blade to rotate; wherein, since the waterproof measures at the battery pack position are not perfect, when external water falls on the battery pack position, the battery pack is easily filled with water, causing damage to the battery pack. Utility Model Content

[0005] The utility model aims to provide a two-hand saw with electronic brake, which is helpful to reduce the possibility of water entering the battery pack.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions: a two-handed saw with electronic brakes, comprising a main housing, a motor arranged in the main housing, a saw board arranged at one end of the main housing, a chain saw blade sleeved around the saw board and connected to the motor, a battery compartment arranged on the main housing, a battery pack inserted in the battery compartment and electrically connected to the motor, a front handle arranged on a side of the main housing close to the saw board, and a rear handle arranged on a side of the main housing away from the saw board, the main housing comprising a left housing and a right housing, a waterproof cover is arranged on the upper side of the battery compartment, a connecting arm is arranged on the side of the waterproof cover close to the rear handle, a rotating sleeve is arranged on the lower side of the connecting arm, and the left housing and the right housing are both provided with a rotating sleeve embedded in the rotating sleeve. A rotating shaft is provided at both ends of the sleeve, a first boss is provided on the left casing and on the side of the battery compartment away from the rotating shaft, a first cavity is defined in the first boss, a second boss docking with the first boss is provided on the right casing, a second cavity communicating with the first cavity is defined in the second boss, a connecting sleeve is provided in the first cavity, an internally threaded sleeve is provided in the second cavity, a connecting bolt that passes through the connecting sleeve and is threadedly connected to the internally threaded sleeve is provided on the first boss, a clamping strip is provided on the upper inner wall of the first cavity and the second cavity, an elastic plate embedded in the first cavity and the second cavity is provided on the side of the waterproof cover away from the connecting arm, and a locking strip for abutting against the lower side of the clamping strip is provided at the lower end of the elastic plate.

[0007] The utility model is further configured as follows: an annular groove is provided on the inner wall of the peripheral side of the opening at the lower side of the waterproof cover, and a sealing ring platform embedded in the annular groove is provided on the peripheral side of the upper end of the battery compartment.

[0008] The utility model is further configured as follows: positioning plates for respectively abutting against the first boss and the second boss are arranged on the waterproof cover and at positions on both sides of the elastic plate away from one end of the locking strip.

[0009] The utility model is further configured as follows: the waterproof cover is made of transparent plastic material.

[0010] The utility model is further configured as follows: the motor is a brake motor, a controller electrically connected to the motor and used to control the motor brake is provided in the main housing, a first switch electrically connected to the controller is provided in the main housing and located on one side of the front handle, a first switch is provided on the first switch, a brake handle is provided on the main housing, a connecting shaft rotatably connected to the main housing is provided at the lower end of the brake handle, and a connecting platform for pressing against the first switch button after the connecting shaft rotates is provided on the outer wall of the connecting shaft.

[0011] The utility model is further configured as follows: a second switch electrically connected to the controller is also provided in the rear handle, a second switch button is provided on the second switch, and a control button is provided at the position of the rear handle, one end of which is hinged in the rear handle and is used to press against the second switch button after being rotated upward.

[0012] In summary, the utility model has the following beneficial effects:

[0013] 1. The waterproof cover is embedded with the rotating shaft by means of a rotating sleeve, and one side of the waterproof cover can be rotatably connected to the upper end of the battery compartment. After the waterproof cover is rotated toward the side close to the battery compartment, the elastic plate on the waterproof cover is embedded in the first cavity and the second cavity, and at the same time, the elastic plate is abutted against the lower side of the clamping strip by means of a locking strip, and the waterproof cover can be clamped and locked on the upper end of the battery compartment, so that the upper end of the battery compartment is wrapped by the waterproof cover, and finally the possibility of water entering the battery pack can be reduced;

[0014] 2. When the waterproof cover is wrapped around the upper end of the battery compartment, the ring groove around the waterproof cover can be used for the sealing ring around the upper end of the battery compartment to be embedded. At this time, the waterproof performance can be improved by the cooperation of the ring groove and the sealing ring;

[0015] 3. The waterproof cover uses the positioning plate to abut against the first boss and the second boss, thereby positioning the clamping position of the elastic plate;

[0016] 4. The waterproof cover is made of transparent plastic material, so you can see the situation inside the battery compartment through the waterproof cover;

[0017] 5. When the rotation of the chain saw blade needs to be stopped immediately, the brake handle is swung to drive the connecting platform on the connecting shaft to press against the first switch button. At this time, the first switch can transmit a signal to the controller, and then the controller can transmit a signal to the motor, and the brake in the motor can be activated, and then the motor can stop rotating immediately, realizing electronic braking;

[0018] 6. By pressing the control button of the rear handle, the control button can be swung toward the inside of the rear handle. At this time, the control button can be pressed against the second switch button, and the second switch can transmit the signal to the controller, and then the controller can transmit the signal to the motor, and the brake in the motor can be activated, and then the motor can stop rotating immediately to realize electronic braking. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is an enlarged structural diagram of the main housing of the utility model, in which the connecting bolts and the waterproof cover are exploded;

[0022] Figure 3 yes Figure 2 Enlarged view of part A in the middle;

[0023] Figure 4 It is an enlarged structural diagram of the waterproof cover in the utility model;

[0024] Figure 5 It is a schematic diagram of the structure inside the main housing of the utility model, and is mainly used to reflect the structure of the controller, the first switch and the second switch.

[0025] In the figure, 1, main casing; 11, motor; 12, saw board; 13, chain saw blade; 14, battery compartment; 141, sealing ring platform; 15, battery pack; 16, front handle; 17, rear handle; 101, left casing; 1011, first boss; 1012, first cavity; 1013, connecting sleeve; 1014, connecting bolt; 102, right casing; 1021, second boss; 1022, second cavity; 1023, internal thread sleeve; 103, rotating shaft; 104, clamping strip; 2, waterproof cover; 21, connecting arm; 22, rotating sleeve; 23, elastic plate; 231, locking strip; 24, ring groove; 25, positioning plate; 3, controller; 4, first switch; 41, first switch button; 5, brake handle; 51, connecting shaft; 511, connecting platform; 6, second switch; 61, second switch button; 7, control button. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] A two-hand saw with electronic brake, referring to Figure 1 , Figure 2The double-handed saw with electronic brake includes a main housing 1, a motor 11, a saw board 12, a chain saw blade 13, a battery compartment 14, a battery pack 15, a front handle 16, and a rear handle 17, wherein the motor 11 is installed in the main housing 1, and the saw board 12 is installed at one end of the main housing 1, and the chain saw blade 13 is sleeved on the side of the saw board 12 and connected to the motor 11, and the chain saw blade 13 can be driven to rotate by the motor 11; wherein the battery compartment 14 is integrally arranged on the main housing 1, and the battery pack 15 is plugged into the battery compartment 14 and electrically connected to the motor 11, and the motor 11 can be powered by the battery pack 15; and the front handle 16 is installed on the side of the main body close to the saw board 12, and the rear handle 17 is installed on the side of the main housing 1 away from the saw board 12.

[0028] Reference Figure 2 , Figure 3 , Figure 4 The main housing 1 includes a left housing 101 and a right housing 102, and the left housing 101 and the right housing 102 are fixed by bolts and threads; a waterproof cover 2 is provided on the upper side of the battery compartment 14, and the waterproof cover 2 is made of a transparent elastic plastic material, and a connecting arm 21 is integrally provided on the side of the waterproof cover 2 close to the rear handle 17, and a rotating sleeve 22 is integrally provided on the lower side of the connecting arm 21, and a rotating sleeve 22 is integrally provided on the left housing 101 and the right housing 102. The left housing 101 is provided with a first boss 1011 on the side of the battery compartment 14 away from the shaft 103, and the first boss 1011 has a first cavity 1012, and the right housing 102 is provided with a second boss 1021 connected to the first boss 1011, and the second boss 1021 has a second cavity 1022 connected to the first cavity 1012, wherein the first cavity 1012 is provided with a connecting sleeve 101 3, and the second cavity 1022 is integrally provided with an internal thread sleeve 1023, and the first boss 1011 is provided with a connecting bolt 1014 that passes through the connecting sleeve 1013 and is threadedly connected to the internal thread sleeve 1023, and the upper inner wall of the first cavity 1012 and the second cavity 1022 is integrally provided with a clamping strip 104, wherein the waterproof cover 2 is integrally provided with an elastic plate 23 embedded in the first cavity 1012 and the second cavity 1022 on the side away from the connecting arm 21, and the elastic plate 23 A locking strip 231 for abutting against the lower side of the clamping strip 104 is integrally provided at the lower end of the waterproof cover 2, and positioning plates 25 are integrally provided on both sides of the elastic plate 23 away from the end of the locking strip 231. The two positioning plates 25 can be used to abut against the first boss 1011 and the second boss 1021 respectively; at the same time, an annular groove 24 is provided on the inner wall of the peripheral side of the opening at the lower side of the waterproof cover 2, and a sealing ring 141 embedded in the annular groove 24 is integrally provided on the peripheral side of the upper end of the battery compartment 14.

[0029] Reference Figure 1 , Figure 5 , this type of motor 11 is a brake motor, which has a brake device inside to brake the motor rotation, and a controller 3 electrically connected to the motor 11 and used to control the brake of the motor 11 is also installed in the main housing 1 by bolts, wherein a first switch 4 electrically connected to the controller 3 is fixed by bolts in the main housing 1 and located on one side of the front handle 16, and a first switch button is arranged on the first switch 4, and a brake handle 5 is also arranged on the main housing 1, and a connecting shaft 51 is arranged at the lower end of the brake handle 5, which is rotatably connected to the main housing 1 through an axis and a bearing, wherein a connecting platform 511 is integrally arranged on the outer wall of the connecting shaft 51, and the connecting platform 511 can be used to press against the first switch button 41 after the connecting shaft 51 rotates; at the same time, a second switch 6 electrically connected to the controller 3 is also fixed in the rear handle 17 by bolts, and a second switch button 61 is arranged on the second switch 6, wherein a control button 7 with one end hinged in the rear handle 17 and used to press against the second switch button 61 after rotating upward is arranged at the position of the rear handle 17.

[0030] Principle: The waterproof cover 2 utilizes the rotating sleeve 22 for the rotating shaft 103 to be embedded, and at this time, one side of the waterproof cover 2 can be rotatably connected to the upper end of the battery compartment 14, wherein after the waterproof cover 2 is rotated toward the side close to the battery compartment 14, the elastic plate 23 on the waterproof cover 2 is embedded in the first cavity 1012 and the second cavity 1022, and at the same time, the elastic plate 23 utilizes the locking strip 231 to abut against the lower side of the clamping strip 104, and the annular groove 24 on the peripheral side of the waterproof cover 2 is provided for the sealing ring 141 on the peripheral side of the upper end of the battery compartment 14 to be embedded, and at this time, the waterproof cover 2 can be clamped and locked on the upper end of the battery compartment 14, so that the upper end of the battery compartment 14 is wrapped by the waterproof cover 2, and finally the possibility of water entering the battery pack 15 can be reduced.

[0031] When it is necessary to immediately pause the rotation of the chain saw blade 13, the brake handle 5 is swung to drive the connecting platform 511 on the connecting shaft 51 to press against the first switch button 41. At this time, the first switch 4 can transmit the signal to the controller 3, and then the controller 3 can transmit the signal to the motor 11, and the brake in the motor 11 can be started, and then the motor 11 can stop rotating immediately, realizing electronic braking; or by pressing the control button 7 of the rear handle 17, the control button 7 can be swung toward the rear handle 17, and at this time the control button 7 can press against the second switch button 61, and the second switch 6 can transmit the signal to the controller 3, and then the controller 3 can transmit the signal to the motor 11, and the brake in the motor 11 can be started, and then the motor 11 can stop rotating immediately, realizing electronic braking.

Claims

1. A two-handed saw with an electronic brake, comprising a main housing (1), a motor (11) arranged in the main housing (1), a saw board (12) arranged at one end of the main housing (1), a chain saw blade (13) sleeved around the saw board (12) and connected to the motor (11), a battery compartment (14) arranged on the main housing (1), a battery pack (15) inserted in the battery compartment (14) and electrically connected to the motor (11), a front handle (16) arranged on a side of the main housing (1) close to the saw board (12), and a rear handle (17) arranged on a side of the main housing (1) away from the saw board (12), characterized in that: The main housing (1) comprises a left housing (101) and a right housing (102); a waterproof cover (2) is arranged on the upper side of the battery compartment (14); a connecting arm (21) is arranged on the side of the waterproof cover (2) close to the rear handle (17); a rotating sleeve (22) is arranged on the lower side of the connecting arm (21); a rotating shaft (103) embedded in the two ends of the rotating sleeve (22) is arranged on both the left housing (101) and the right housing (102); a first boss (1011) is arranged on the side of the battery compartment (14) away from the rotating shaft (103); a first cavity (1012) is provided in the first boss (1011); a second boss (1021) is arranged on the right housing (102) and is connected to the first boss (1011); the second boss (1021) is connected to the first boss (1011); ) is provided with a second cavity (1022) which is in communication with the first cavity (1012); a connecting sleeve (1013) is provided in the first cavity (1012); an internal threaded sleeve (1023) is provided in the second cavity (1022); a connecting bolt (1014) is provided on the first boss (1011) and passes through the connecting sleeve (1013) and is threadedly connected to the internal threaded sleeve (1023); a clamping strip (104) is provided on the upper inner wall of the first cavity (1012) and the second cavity (1022); an elastic plate (23) embedded in the first cavity (1012) and the second cavity (1022) is provided on the side of the waterproof cover (2) away from the connecting arm (21); a locking strip (231) for contacting the lower side of the clamping strip (104) is provided at the lower end of the elastic plate (23).

2. A two-handed saw with electronic brake according to claim 1, characterized in that: An annular groove (24) is provided on the inner wall of the peripheral side of the lower opening of the waterproof cover (2), and a sealing ring platform (141) embedded in the annular groove (24) is provided on the peripheral side of the upper end of the battery compartment (14).

3. The two-handed saw with electronic brake according to claim 1, characterized in that: Positioning plates (25) for respectively contacting the first boss (1011) and the second boss (1021) are provided on the waterproof cover (2) and at positions on both sides of the elastic plate (23) away from one end of the locking strip (231).

4. The two-handed saw with electronic brake according to claim 1, characterized in that: The waterproof cover (2) is made of transparent plastic material.

5. The two-handed saw with electronic brake according to claim 1, characterized in that: The motor (11) is a brake motor (11), a controller (3) electrically connected to the motor (11) and used to control the braking of the motor (11) is arranged in the main housing (1), a first switch (4) electrically connected to the controller (3) is arranged in the main housing (1) and located on one side of the front handle (16), a first switch (4) electrically connected to the controller (3) is arranged, the first switch (4) is provided with a first switch button (41), a brake handle (5) is arranged on the main housing (1), a connecting shaft (51) rotatably connected to the main housing (1) is arranged at the lower end of the brake handle (5), and a connecting platform (511) is arranged on the outer wall of the connecting shaft (51) for pressing against the first switch button (41) after the connecting shaft (51) rotates.

6. A two-handed saw with electronic brake according to claim 5, characterized in that: A second switch (6) electrically connected to the controller (3) is also provided in the rear handle (17), a second switch button (61) is provided on the second switch (6), and a control button (7) is provided at the rear handle (17), one end of which is hinged in the rear handle (17) and is used to press against the second switch button (61) after being rotated upward.

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