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CN-224209206-U - Anti-loosening adjusting mechanism for bottom plate of jig saw

CN224209206UCN 224209206 UCN224209206 UCN 224209206UCN-224209206-U

Abstract

The utility model discloses a bottom plate anti-loosening adjusting mechanism of a curve saw, which is characterized in that a locking bolt is connected to a bottom plate, an anti-loosening adjusting assembly is arranged between the bottom plate and the locking bolt, the anti-loosening adjusting assembly comprises a pressing plate, a locking plate and a countersunk screw, a through hole and a threaded hole are formed in the pressing plate at intervals, a rotation stopping block is connected to the lower end of the locking bolt in a rotation stopping mode, the countersunk screw penetrates through the locking plate and is in threaded connection with the threaded hole, a convex ring is arranged at the lower end of the locking bolt, the locking plate presses the rotation stopping block on the lower end face of the convex ring after the countersunk screw is screwed, and the upper end face of the convex ring is pressed on the lower end face of the bottom plate, so that the locking bolt is fixedly connected with the pressing plate in a rotation stopping mode. In the embodiment, through the matching of the anti-loosening adjusting component and the anti-rotation block, the anti-rotation fixed connection of the locking bolt and the bottom plate is realized, the bottom plate is prevented from loosening due to the rotation of the locking bolt, and the use safety of the jig saw is improved.

Inventors

  • YANG LIHUI
  • YU CHAOYONG
  • WANG XIAOMING
  • ZHENG BINGHAO

Assignees

  • 宁波协诚电动工具有限公司
  • 宁波卡伦特电器有限公司

Dates

Publication Date
20260508
Application Date
20250530

Claims (8)

  1. 1. The bottom plate anti-loosening adjusting mechanism of the jig saw is characterized in that the pressing plate (31) is provided with a through hole (311) and a threaded hole (312) at intervals, the locking bolt (2) sequentially penetrates through the through hole (311) and the bottom plate (1) and then is connected with a spanner (4) so that the upper end face of the pressing plate (31) is in compression joint with the lower end face of the bottom plate (1), the spanner (4) is provided with a clamping hole (41), a nut (6) is connected in the clamping hole (41) in a rotation-stopping mode, the nut (6) is in threaded connection with the locking bolt (2), the lower end of the locking bolt (2) is in rotation-stopping mode and is connected with a rotation-stopping block (5), the rotation-stopping block (5) is connected to the locking bolt (32), the threaded hole (33) is connected with the threaded hole (33) after the locking bolt (33) penetrates through the threaded hole (33), the locking plate (32) is used for pressing the rotation stopping block (5) on the lower end face of the convex ring (21), and the upper end face of the convex ring (21) is pressed on the lower end face of the bottom plate (1), so that the rotation stopping fixed connection of the locking bolt (2) and the pressing plate (31) is realized.
  2. 2. The anti-loosening adjusting mechanism for the bottom plate of the jig saw as claimed in claim 1, wherein a polygonal connecting portion (22) is arranged at the lower end of the locking bolt (2), the rotation stopping block (5) is provided with a polygonal groove (51) correspondingly matched with the polygonal connecting portion (22), and the locking bolt (2) and the rotation stopping block (5) are in rotation stopping connection through the matching of the polygonal connecting portion (22) and the polygonal groove (51).
  3. 3. The anti-loosening adjusting mechanism for the bottom plate of the jig saw according to claim 1 or 2, wherein an outer gear ring (52) is arranged on the outer peripheral wall of the anti-rotation block (5), an inner tooth groove (321) correspondingly matched with the outer gear ring (52) is arranged on the locking plate (32), and the anti-rotation block (5) and the locking plate (32) are in anti-rotation connection through the outer gear ring (52) and the inner tooth groove (321).
  4. 4. The anti-loosening adjustment mechanism for the bottom plate of a jig saw as claimed in claim 3, wherein the anti-rotation block (5) and the internal tooth groove (321) are tapered, and the diameter of the upper end is larger than that of the lower end.
  5. 5. The anti-loosening adjustment mechanism for the bottom plate of a jig saw as claimed in claim 1, wherein the bottom plate (1) is provided with an adjustment hole (11), and the locking bolt (2) is connected to the wrench (4) after passing through the adjustment hole (11).
  6. 6. The mechanism as set forth in claim 5, wherein the base plate (1) comprises a first plate body (12) and a second plate body (13) detachably connected, the first plate body (12) has an arch portion (121) protruding upward, and the adjustment hole (11) is provided in the arch portion (121) and extends in a width direction of the arch portion (121).
  7. 7. The mechanism of claim 1, wherein the lower end face of the pressing plate (31) is provided with an arc-shaped protrusion (313), and the pressing plate (31) is pressed against the upper end face of the locking plate (32) through the arc-shaped protrusion (313) after the countersunk head screw (33) is screwed.
  8. 8. The mechanism as set forth in claim 1, wherein the lower end surface of the lock plate (32) is provided with a counter bore (322).

Description

Anti-loosening adjusting mechanism for bottom plate of jig saw Technical Field The utility model relates to the technical field of electric tools, in particular to a bottom plate anti-loosening adjusting mechanism of a jig saw. Background The curve saw is an electric tool for cutting materials by the reciprocating motion of a saw blade, is widely applied to the linear or curve processing of wood, metal, plastic and other materials, and has the core advantages that the flexible and adjustable bottom plate structure can adapt to the cutting requirements of different angles and working conditions. As a key component for connecting the machine body and the bottom plate, the bottom plate quick clamping structure bears the important functions of fixing the bottom plate, transmitting power and adjusting the cutting angle. The structure is generally composed of locking bolts, pressing plates, gaskets, locking screws and the like. The machine body of the curve saw comprises a gearbox, the angle of the gearbox relative to the bottom plate can be conveniently adjusted through the bottom plate quick clamping structure, and meanwhile reliable connection between the bottom plate and the gearbox in the cutting process is ensured. The utility model discloses a scroll saw and a bottom plate quick clamping structure thereof, as disclosed in Chinese patent application publication number CN208276285U, and the scroll saw comprises a bottom plate with an adjusting hole, wherein the bottom plate is connected with a reduction gearbox of the scroll saw through a connecting component, the connecting component comprises a self-locking piece and a locking bolt, and the self-locking piece is matched with the bottom plate to limit the rotation of the locking bolt. The self-locking piece comprises a pressing plate and a second countersunk head screw, the second countersunk head screw penetrates through the first gasket to be in threaded connection with the threaded hole, and after the second countersunk head screw is screwed, the first gasket is in pressure connection with the outer surface of the head of the locking bolt, so that the locking bolt is fixed with the pressing plate. However, the quick clamping structure of the jig saw and the bottom plate thereof disclosed in the prior art has the defect that in an actual working scene, the jig saw is always in a working condition of high-frequency vibration, and under the condition, the press fit structure of the first gasket and the end face of the head of the locking bolt is easy to fail. The failure can lead to the autorotation phenomenon of the locking bolt, and the autorotation of the locking bolt can further cause the loosening of the pressing plate, thereby adversely affecting the stable operation and the reliability of the jig saw. There is a need for improvements over the prior art. Disclosure of utility model The utility model aims to overcome the defects and shortcomings of the prior art, and provides a bottom plate anti-loosening adjusting mechanism of a jig saw, wherein a locking bolt is fixedly connected with a pressing plate through anti-loosening adjusting components and anti-rotation blocks in a matched mode, and the phenomenon of loosening of the pressing plate in the using process is avoided. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The bottom plate anti-loosening adjusting mechanism of the curve saw is characterized in that a locking bolt is connected to the bottom plate, an anti-loosening adjusting component is arranged between the bottom plate and the locking bolt, the anti-loosening adjusting component comprises a pressing plate, a locking plate and a countersunk screw, a through hole and a threaded hole are formed in the pressing plate at intervals, the locking bolt sequentially penetrates through the through hole and the bottom plate and then is connected with a spanner, so that the upper end face of the pressing plate is in compression joint with the lower end face of the bottom plate, a clamping hole is formed in the clamping hole, a nut is in rotation stopping connection with the locking bolt in a threaded mode, a rotation stopping block is in rotation stopping connection with the locking plate, the countersunk screw penetrates through the locking plate and then is in threaded connection with the threaded hole, a convex ring is arranged at the lower end of the locking bolt, and after the countersunk screw is screwed, the locking plate is in compression joint with the rotation stopping block at the lower end face of the convex ring, and the upper end face of the convex ring is in compression joint with the lower end face of the bottom plate, so that the locking bolt is in compression joint with the locking bolt in a fixed connection. Further, the lower extreme of locking bolt is provided with polygon connecting portion, the piece that splines is provided with and corresponds complex polygon groove wi