CN201760667U

CN201760667U - Miter saw

Info

Publication number: CN201760667U
Application number: CN2010202411640U
Authority: CN
Inventors: 徐科松; 王巧根
Original assignee: Nanjing Chervon Industry Co Ltd
Current assignee: Nanjing Chervon Industry Co Ltd
Priority date: 2010-06-28
Filing date: 2010-06-28
Publication date: 2011-03-16
Anticipated expiration: 2020-06-28

Abstract

The utility model discloses a miter saw, which comprises a cutting head, wherein, the cutting head comprises a saw blade, a fixed protecting hood, a movable protecting hood, a handle and a movable protecting hood locking mechanism; the saw blade is arranged on a rotating shaft of the saw blade; the fixed protecting hood covers the upper half of the saw blade; the movable protecting hood is movably connected with the fixed protecting hood and can selectively cover the lower half of the saw blade; the handle is connected with the fixed protecting hood; the movable protecting hood locking mechanism comprises a locking piece and a locking actuating piece, and the locking piece is installed on the fixed protecting hood; one end of the locking actuating piece is connected with a switching trigger, and the other end of the locking actuating piece is connected with the locking piece; and a limiting part that can be matched with the locking piece is arranged on the movable protecting hood. By the structure, the locking piece can be driven to move when the switching trigger is operated, and an operating piece especially used for the movable protecting hood locking mechanism is omitted, so that the structure is simplified.

Description

Mitre saw

Technical field

The utility model relates to a kind of mitre saw, especially relates to the lockable mitre saw of movable shield, belongs to the electric tool technical field.

Background technology

Mitre saw comprises a movable shield that is positioned on the cutting head usually and is used for selectively hiding the cutting part that saw blade exposes secure shroud.Open movable shield in order to prevent operator's accident, to movable shield a guard shield locking mechanism is set usually, the cutting part of saw blade is exposed just make the operator can open movable shield by specific operational motion.

The utility model content

Technical problem to be solved in the utility model provides a kind of mitre saw, its movable shield lockable, and security improves, and does not influence and use manual comfort level in the left and right sides and complete machine outward appearance respectively.

For solving the problems of the technologies described above, the utility model provides a kind of mitre saw, comprise cutting head, cutting head comprises that one is contained in the saw blade in the saw blade rotating shaft, cover the secure shroud of saw blade the first half, flexibly connect the movable shield that also selectively covers saw blade the latter half with secure shroud, the handle that links to each other with secure shroud, and movable shield locking mechanism, the movable shield locking mechanism comprises that one is installed on the locking piece of secure shroud, one locking actuated piece, one end of locking actuated piece is connected in the switch trigger, the other end is connected in locking piece, is provided with the stop portion that can match with locking piece on movable shield.

Pass through said structure, can drive locking piece in the time of the console switch trigger moves, saved an operating parts that is specifically designed to the movable shield locking mechanism on the one hand, simplified the structure, on comfort level, not there are differences in the time of also can not causing the operator on the other hand with left hand or right-hand operated.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the mitre saw of a first-selected embodiment of the present utility model;

Fig. 2 is the side view of the cutting head of mitre saw among Fig. 1, and wherein handle is partly analysed and observe;

Fig. 3 a is in the primary importance schematic diagram for switch trigger in the mitre saw among Fig. 1 drives locking piece;

Fig. 3 b is in second place schematic diagram for switch trigger in the mitre saw among Fig. 1 drives locking piece.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is further described.

As Fig. 1, mitre saw 1 comprise base 13, around vertical axis Y be rotationally connected with base 13 rotating disk 12, around horizontal axis X pivot the support arm 15 be installed on rotating disk 12 rear portions, be pivotally connected to the cutting head 10 of support arm 15 around horizontal axis Z, wherein axis X, Y, Z are vertical mutually in twos.Cutting head 10 comprises one and is contained in the secure shroud 101, that saw blade 102, in the saw blade rotating shaft covers saw blade the first half and flexibly connects and selectively cover the movable shield 103 and a handle that links to each other with secure shroud 104 of saw blade the latter half with secure shroud.Also being provided with movable shield linkage 105 on the mitre saw 1 is used for along with the change in location drive movable shield 103 of cutting head 10 is opened or closure.

Cutting head 10 around horizontal axis Z can be up primary importance and the second place of below between pivot, on primary importance, cutting head 10 upwards lifts, the movable shield 103 closed saw blades 102 that also farthest cover, saw blade can not contact with the workpiece on placing base 13, so the primary importance non-cutting position that is otherwise known as; On the second place, cutting head 10 falls, and movable shield 103 is opened under the effect of linkage 105 automatically, exposes the gulleting of saw blade 102 the latter halfs, but sawtooth contact workpiece and it is cut, so the second place cutting position that is otherwise known as.On some mitre saws, can also be by being different from the automatic open and close that realizes movable shield that is provided with of linkage.These are to know technology to those skilled in the art, repeat no more.

In order to guarantee the security of mitre saw, when cutting head is in off-position, movable shield should be able to farthest cover the sawtooth of saw blade, and guarantee that the operator can not injure because of the saw blade that unexpected touching is rotated at a high speed, movable shield should be locked, do not have special operation, movable shield can not be opened.

As shown in Figure 2, the movable shield locking mechanism comprises a locking piece 19a, a locking actuated piece 19f.Locking piece 19a 19c pivot around the shaft is installed on secure shroud 101 inside.The end of locking actuated piece 19f is connected in switch trigger 104e, and the other end is connected in locking piece 19a, and locking actuated piece 19f first-selection is a soft rope, and is arranged in the handle of cutting head and the inner space of secure shroud.When switch trigger 104e is pulled or resets, make locking actuated piece 19f drive locking piece 19a and turn on one of them of the primary importance and the second place around axle 19c.On the primary importance of locking piece 19a, the lock part 19b of locking piece 19a contacts with the stop portion 103a of movable shield 103 inboards, shown in solid line among Fig. 2, movable shield is limited to closure state; On the second place of locking piece 19a, lock part 19b and stop portion 103a disengage, and as shown in phantom in Figure 2, movable shield can be opened this moment.Lock part 19b first-selection is the pin shape.Be provided with a locking returning spring 19d between locking piece 19a and the secure shroud 103.

Shown in Fig. 3 a, 3b, switch trigger 104e is contained on the handle 104, and is provided with returning spring 104h between handle internal structure and switch trigger.Be used for two of locking switch trigger and lay respectively at handle 104 grip portions two ends from

cage knob

104c and 104d, so that the operator finishes operation from cage knob and switch trigger with the left hand or the right hand, between

cage knob

104c and 104d, be provided with a self-locking connecting rod 104f at two, make operation any all can cause two to unclamp simultaneously or the locking switch trigger from cage knob from cage knob.Press any from cage knob, two all move to the not position of locking switch trigger from cage knob, the switch trigger is pressed to handle, shown in Fig. 3 b, make its trigger switch 104g, and drive the second place that locking actuated piece 19f makes locking piece 19a turn to locking piece and unclamp movable shield, the operator presses cutting head downwards then, and the linkage 105 of movable shield drives movable shield and opens.When cutting head lifts, during operator's trip switch trigger, the switch trigger moves outside handle under returning spring 104h effect, shown in Fig. 3 a, make locking actuated piece 19f unclamp locking piece 19a, locking piece turns to the primary importance of locking piece under the effect of locking returning spring 19d, movable shield is locked in closing position.

In addition, but several connecting rods are replaced soft rope, replace soft rope to carry out transmission; The connecting rod that is used for transmission can be hidden in handle inside, perhaps is close to the inboard of handle, does not have influence on outward appearance equally.

The utlity model has following characteristics:

1, the part that exposes of device is very little, and in ND position; To not influence of outward appearance.

2, right-hand man's operation feeling is the same;

3, the setting to other structures of mitre saw does not influence.

Below disclose the utility model with preferred embodiment, so it is not in order to restriction the utility model, and all employings are equal to replaces or technical scheme that the equivalent transformation mode is obtained, all drops within the protection domain of the present utility model.

Claims

1. mitre saw, comprise cutting head (10), described cutting head (10) comprises that one is contained in the saw blade (102) in the saw blade rotating shaft, cover the secure shroud (101) of saw blade the first half, flexibly connect the movable shield (103) that also selectively covers saw blade the latter half with secure shroud, the handle that links to each other with secure shroud (104), and movable shield locking mechanism, it is characterized in that: described movable shield locking mechanism comprises a locking piece (19a), one locking actuated piece (19f), described locking piece (19a) is installed on secure shroud (101), one end of locking actuated piece (19f) is connected in switch trigger (104e), the other end is connected in locking piece (19a), is provided with the stop portion (103a) that can match with locking piece (19a) on described movable shield (103).

2. mitre saw according to claim 1 is characterized in that: be provided with a locking returning spring (19d) between described locking piece (19a) and the secure shroud (103).

3. mitre saw according to claim 1 is characterized in that: described locking piece has a primary importance and a second place, and on primary importance, locking piece contacts with stop portion, and on the second place, locking piece and stop portion disengage.

4. mitre saw according to claim 1 is characterized in that: described locking piece (19e) pivot around the shaft is installed on secure shroud.

5. according to each described mitre saw among the claim 1-4, it is characterized in that: described locking actuated piece (19f) is a soft rope, and is arranged in the handle of cutting head and the inner space of secure shroud.

6. mitre saw according to claim 5 is characterized in that: described locking actuated piece (19f) is several connecting rods that links to each other.

7. mitre saw according to claim 1 is characterized in that: switch trigger (104e) is contained on the handle (104).