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CN-224209205-U - Bottom plate adjusting mechanism of curve saw

CN224209205UCN 224209205 UCN224209205 UCN 224209205UCN-224209205-U

Abstract

The utility model discloses a bottom plate adjusting mechanism of a scroll saw, which is characterized in that a connecting bolt is connected to a bottom plate, the bottom plate is connected to a gearbox of the scroll saw through the connecting bolt, an adjusting mechanism component is arranged between the bottom plate and the connecting bolt and comprises a pressing plate, a locking block and a countersunk head screw, the lower end of the connecting bolt is provided with a ring tooth part, the peripheral wall of the ring tooth part is provided with external teeth, the locking block is provided with a locking angle matched with the external teeth in a clamping way, and after the countersunk head screw is screwed, the locking block is pressed on the lower end face of the ring tooth part and is matched with the external teeth in a clamping way, so that the relative rotation of the connecting bolt and the pressing plate is limited, and the locking fixed connection of the connecting bolt and the pressing plate is realized. The adjusting mechanism component is matched with the connecting bolt, so that the connecting bolt is fixedly connected relative to the rotation stopping of the bottom plate, when the cutting angle of the bottom plate is locked, the locking angle of the locking block is matched with the outer teeth of the connecting bolt in a clamping manner, and the reliability of the rotation stopping connection of the connecting bolt and the pressing plate is greatly improved.

Inventors

  • YU CHAOYONG
  • YANG LIHUI
  • 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 (9)

  1. 1. The bottom plate adjusting mechanism of the scroll saw is characterized in that the bottom plate (1) is provided with a connecting bolt (3), an adjusting mechanism component (2) is arranged between the bottom plate (1) and the connecting bolt (3), the adjusting mechanism component (2) comprises a pressing plate (21), a locking block (22) and a countersunk screw (23), through holes (211) and threaded holes (212) are formed in the pressing plate (21) at intervals, the connecting bolt (3) sequentially penetrates through the through holes (211) and the bottom plate (1) and then is connected with a spanner (4) so that the upper end face of the pressing plate (21) is attached to the lower end face of the bottom plate (1), the spanner (4) is provided with a clamping hole (41), a nut (5) is connected to the clamping hole (41) in an internal locking mode, the nut (5) is in threaded connection with the connecting bolt (3), the lower end of the connecting bolt (3) is provided with a ring tooth portion (31), the lower end face of the pressing plate (21) is attached to the upper end face of the ring tooth portion (31), the outer tooth portion (311) is provided with an external tooth portion (311), the countersunk head screw (23) passes through the locking block (22) and is in threaded connection with the threaded hole (212), when the countersunk head screw (23) is screwed, the locking block (22) is in the lower end face of the annular tooth part (31) in a pressing mode, and the locking angle (221) is matched with the outer tooth (311) in a clamping mode, so that relative rotation of the connecting bolt (3) and the pressing plate (21) is limited, and rotation-stopping fixed connection of the connecting bolt (3) and the pressing plate (21) is achieved.
  2. 2. The bottom plate adjusting mechanism of a jig saw as claimed in claim 1, wherein the bottom plate (1) includes a first plate body (12), the first plate body (12) has a boss (121) bulging upward, the boss (121) is provided with an adjusting hole (11) through which a connecting bolt (3) passes, and the adjusting hole (11) extends in a width direction of the boss (121).
  3. 3. The bottom plate adjusting mechanism of a jig saw as claimed in claim 2, wherein the shape of the end face of the pressing plate (21) which is attached to the boss (121) is adapted to the shape of the inner wall of the boss (121).
  4. 4. The bottom plate adjusting mechanism of a jig saw as claimed in claim 2, wherein the bottom plate (1) further comprises a second plate body (13) arranged below the first plate body (12), and the first plate body (12) is detachably connected with the second plate body (13).
  5. 5. The bottom plate adjusting mechanism of the jig saw as claimed in claim 4, wherein a protection plate (7) is arranged below the second plate body (13).
  6. 6. The bottom plate adjusting mechanism of a jig saw as claimed in claim 2, wherein the protruding portion (121) is provided with a scale (1211) for identifying the angle of the bottom plate (1).
  7. 7. The bottom plate adjusting mechanism of the jig saw as claimed in claim 2, wherein the protruding portion (121) is provided with latch portions (1212) arranged at intervals, and a clamping post (101) matched with the latch portions (1212) in a clamping manner is arranged at the bottom of the gearbox (100) of the jig saw.
  8. 8. The bottom plate adjusting mechanism of the jig saw as claimed in claim 1, wherein a gasket (6) is sleeved on the periphery of the connecting bolt (3), and the gasket (6) is arranged between the wrench (4) and the gearbox (100) of the jig saw.
  9. 9. The bottom plate adjusting mechanism of a jig saw as claimed in claim 1, wherein an arc-shaped protrusion (213) is provided on a lower end surface of the pressing plate (21), and the pressing plate (21) is pressed against an upper end surface of the locking block (22) through the arc-shaped protrusion (213) after the countersunk head screw (23) is screwed.

Description

Bottom plate adjusting mechanism of curve saw Technical Field The utility model relates to the technical field of electric tools, in particular to a bottom plate 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 generally comprises parts such as a connecting bolt, a pressing plate, a gasket, a locking screw and the like, the machine body of the jig saw comprises a gearbox, the convenient adjustment (namely the adjustment of the cutting angle) of the gearbox relative to the bottom plate is realized through a bottom plate quick clamping structure, and meanwhile, the 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 connecting bolt, and the self-locking piece is matched with the bottom plate to limit the rotation of the connecting 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 connecting bolt, so that the connecting 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 adjusting mechanism of a jig saw, wherein an adjusting mechanism component of the bottom plate adjusting mechanism comprises a pressing plate, a locking block and a countersunk head screw, and the connecting bolt is fixedly connected with the pressing plate in a rotation stopping way through the matching of the adjusting mechanism component and the connecting bolt, so that 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 adjusting mechanism of the curve saw is characterized in that a connecting bolt is connected to the bottom plate, an adjusting mechanism component is arranged between the bottom plate and the connecting bolt, the adjusting mechanism component comprises a pressing plate, a locking block and a countersunk screw, through holes and threaded holes are formed in the pressing plate at intervals, the connecting bolt sequentially penetrates through the through holes and the bottom plate and then is connected with a spanner, the upper end face of the pressing plate is attached to the lower end face of the bottom plate, a clamping hole is formed in the spanner, a nut is connected in the clamping hole in a rotation stopping mode, the nut is in threaded connection with the connecting bolt, a ring tooth portion is arranged at the lower end of the connecting bolt, the lower end face of the pressing plate is attached to the upper end face of the ring tooth portion, external teeth are arranged on the peripheral wall of the ring tooth portion, locking angles matched with the external teeth in a clamping mode are arranged on the locking block, the countersunk screw penetrates through the locking block and the threaded holes in a threaded mode, and after the countersunk screw is in compression joint with the lower end face of the ring tooth portion, and the locking block is in