CN212577674U - Automatic opening and closing speed change mechanism of oblique saw - Google Patents
Automatic opening and closing speed change mechanism of oblique saw Download PDFInfo
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- CN212577674U CN212577674U CN202021246546.2U CN202021246546U CN212577674U CN 212577674 U CN212577674 U CN 212577674U CN 202021246546 U CN202021246546 U CN 202021246546U CN 212577674 U CN212577674 U CN 212577674U
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- speed change
- change mechanism
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- automatic opening
- closing speed
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Abstract
The utility model discloses an automatic switching speed change mechanism of oblique fracture saw, automatic switching speed change mechanism include the connecting rod, establish the protruding bearing of establishing on the housing of triangle-shaped on the connecting rod, and the bellied both sides limit of triangle-shaped can lean on with the bearing respectively, automatic switching speed change mechanism adjusts the opening speed that the automatic switching speed change mechanism adjusted the saw bit guard shield. The utility model discloses automatic switching speed change mechanism, the opening speed of saw bit guard shield is by slow to fast, and the saw bit guard shield can self-closing when lifting on, and the speed of closing is by fast to slow. When the saw blade protective cover does not work, the saw blade protective cover plays a role in protection, the protective cover is automatically opened in work and automatically closed after stopping work, and the protective cover does not need to be manually operated.
Description
Technical Field
The utility model relates to a miter saw technical field provides an automatic switching speed change mechanism of miter saw.
Background
At present, chinese patent document still discloses oblique fracture saw, application No. 201310504558.9, including the workstation that is used for placing the work piece, bear the base of workstation, the saw blade of cutting the work piece, drive the rotatory motor of saw blade, and install in bear on the base the saw blade with the support of motor, be equipped with the saw blade hole that allows the saw blade to pass through and the back hill that the restriction work piece removed on the workstation, its characterized in that: the worktable is provided with a backing plate, and the backing plate is provided with a saw blade groove allowing a saw blade to pass through. The saw blade is externally provided with a shield for sleeving part of the saw blade, the shield is in a fan shape, and the shield is rotationally fixed on the oblique cutting saw by taking a rotating shaft of the saw blade as a shaft.
Above-mentioned design has the guard shield among the prior art, but the structure of this guard shield is too simple, can not reach the effect of automatic opening when lifting and pushing down on the saw bit.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pair of automatic switching speed change mechanism of oblique fracture saw has solved the problem that prior art exists, has reached the protection of shutdown saw bit, and the guard shield is automatic to be opened at work, and self-closing behind the stop work, the motion of guard shield is earlier slow back fast, does not have the collision when closing the safety cover, does not produce the advantage of noise.
In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides an automatic switching speed change mechanism of oblique fracture saw, automatic switching speed change mechanism includes the connecting rod, establishes the protruding bearing of triangle-shaped on the connecting rod and establishing on the housing, and the protruding both sides limit of triangle-shaped can support with the bearing respectively and lean on, automatic switching speed change mechanism adjusts the opening speed that saw bit guard shield was adjusted to automatic switching speed change mechanism.
Preferably, the front end of the connecting rod is provided with a rolling bearing.
Preferably, the link has a front portion that is curved.
Preferably, the triangular projections have the same length as the two side edges of the bearing against which the bearing abuts, respectively.
Preferably, the corners between the two sides of the triangular projections are rounded.
Preferably, springs are arranged on two sides of the housing and the saw blade shield.
Preferably, one end of the spring is fixed to the blade guard near the rotation center, and the other end is fixed to the housing below the bearing.
Preferably, the blade guard can be pivoted into the housing.
To sum up, the utility model discloses following beneficial effect has:
1. the utility model relates to an automatic switching speed change mechanism of oblique fracture saw has adopted the connecting rod transmission, and when not having work, the saw bit guard shield is closed, and the saw bit guard shield is opened during work.
2. The utility model relates to an automatic switching speed change mechanism of oblique fracture saw has adopted automatic switching speed change mechanism, and the opening speed of saw bit guard shield is by slow to fast, and the saw bit guard shield can self-closing when lifting on, and the speed of closing is by fast to slow.
3. The utility model relates to an automatic switching speed change mechanism of oblique fracture saw, the saw bit guard shield plays the effect of protection when out of work.
4. The utility model relates to an automatic switching speed change mechanism of oblique fracture saw, the guard shield is opened in work is automatic, self-closing after the stop work, need not the manual operation guard shield.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural diagram of the present invention;
fig. 3 is an enlarged view of a part of the structure of the present invention.
Detailed Description
Referring to fig. 1-3, an automatic opening and closing speed change mechanism of a miter saw comprises a connecting rod 1, a triangular protrusion 2 arranged on the connecting rod 1 and a bearing 4 arranged on a housing 3, wherein two side edges of the triangular protrusion 2 can be respectively abutted against the bearing 4, and the automatic opening and closing speed change mechanism adjusts the opening speed of a saw blade shield 5.
The front end of the connecting rod 1 is provided with a rolling bearing.
The connecting rod 1 has an arcuate front portion 6.
The triangular bulges 2 are respectively the same as the two side edges of the bearing in length.
The corner between the two sides of the triangular protrusion 2 is a round corner.
And springs 7 are arranged on two sides of the housing 3 and the saw blade shield 5.
One end of the spring is fixed on the saw blade protecting cover near the rotating center 8, and the other end is fixed on the housing 3 at the lower side of the bearing.
The blade guard 5 can be turned into the housing 3.
The working principle of the automatic opening and closing speed change mechanism and the achieved effect are as follows:
the effect that reaches is: the opening speed of the saw blade shield is from slow to fast, the saw blade shield can be automatically closed when the saw blade shield is lifted, and the closing speed is from fast to slow;
this effect is achieved by: the two side edges of the triangular protrusion 2 can be respectively abutted against the bearing 4, when the housing is lifted, the side edge of the left side of the triangular protrusion 2 is abutted against the bearing 4, in the lifting process of the housing, the connecting rod 1 is lifted along with the lifting, at the moment, because of the design of the slide rail of the saw blade shield, the moving speed of the abutment of the side edge of the left side of the triangular protrusion 2 of the connecting rod 1 against the bearing 4 is high, when the side edge of the left side of the triangular protrusion 2 is separated from the bearing along with the movement of the connecting rod 1, the side edge of the right side of the triangular protrusion 2 is abutted against the bearing 4, the connecting rod 1 and the;
the opening process of the blade guard is exactly opposite to the process of closing the blade guard, and thus will not be discussed in detail.
Example 2
Referring to fig. 1-3, an automatic opening and closing speed change mechanism of a miter saw comprises a connecting rod 1, a triangular protrusion 2 arranged on the connecting rod 1 and a bearing 4 arranged on a housing 3, wherein two side edges of the triangular protrusion 2 can be respectively abutted against the bearing 4, and the automatic opening and closing speed change mechanism adjusts the opening speed of a saw blade shield 5.
The front end of the connecting rod 1 is provided with a rolling bearing.
The connecting rod 1 has an arcuate front portion 6.
The triangular bulges 2 are respectively the same as the two side edges of the bearing in length.
The corner between the two sides of the triangular protrusion 2 is a round corner.
And springs 7 are arranged on two sides of the housing 3 and the saw blade shield 5.
The number and position of the springs 7 are not limited too much in this embodiment, and the springs are only used to achieve the effect of a reset force when the blade guard is reset.
The blade guard 5 can be turned into the housing 3.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any use of the present invention as a basis, in order to solve the same technical problems and achieve the same technical effects, the equivalent changes, equivalent replacements or modifications should be still included in the scope of the present invention.
Claims (8)
1. The utility model provides an automatic switching speed change mechanism of oblique fracture saw which characterized in that: the automatic opening and closing speed change mechanism comprises a connecting rod, a triangular protrusion arranged on the connecting rod and a bearing arranged on the housing, two side edges of the triangular protrusion can be respectively abutted against the bearing, and the automatic opening and closing speed change mechanism adjusts the opening speed of the saw blade shield.
2. The automatic opening and closing speed change mechanism of a miter saw of claim 1, wherein: the front end of the connecting rod is provided with a rolling bearing.
3. The automatic opening and closing speed change mechanism of a miter saw of claim 1, wherein: the connecting rod is provided with an arc-shaped front part.
4. The automatic opening and closing speed change mechanism of a miter saw of claim 1, wherein: the triangular bulges are respectively the same as the lengths of the two side edges of the bearing against.
5. The automatic opening and closing speed change mechanism of a miter saw of claim 1, wherein: the corner between the two sides of the triangular bulge is a round corner.
6. The automatic opening and closing speed change mechanism of a miter saw of claim 1, wherein: and springs are arranged on the two sides of the housing and the saw blade shield.
7. The automatic opening and closing speed change mechanism of a miter saw of claim 6, wherein: one end of the spring is fixed on the saw blade protecting cover near the rotating center, and the other end of the spring is fixed on the housing below the bearing.
8. An automatic opening and closing speed change mechanism of a miter saw according to any of claims 1 to 7, wherein: the blade guard may be rotatable into the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021246546.2U CN212577674U (en) | 2020-06-30 | 2020-06-30 | Automatic opening and closing speed change mechanism of oblique saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021246546.2U CN212577674U (en) | 2020-06-30 | 2020-06-30 | Automatic opening and closing speed change mechanism of oblique saw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212577674U true CN212577674U (en) | 2021-02-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021246546.2U Active CN212577674U (en) | 2020-06-30 | 2020-06-30 | Automatic opening and closing speed change mechanism of oblique saw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212577674U (en) |
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2020
- 2020-06-30 CN CN202021246546.2U patent/CN212577674U/en active Active
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