Multi-gear adjusting structure of handheld reciprocating saw

Abstract

The multi-gear adjusting structure of the handheld reciprocating saw comprises a shell, a saw blade is arranged on the surface of the shell in a penetrating and sliding mode, an adjusting mechanism is arranged in an inner cavity of the shell and used for adjusting the reciprocating stroke of the saw blade, and a control assembly is arranged on the surface of the shell and used for controlling a switch of an electrical element. The utility model relates to the technical field of reciprocating saws. According to the multi-gear adjusting structure of the handheld reciprocating saw, the adjusting motor is started by rotating the control knob to drive the threaded rod to rotate, the threaded rod drives the adjusting plate to slide along the inner surface of the adjusting groove, and the adjusting plate drives the sliding bolt to move, that is, the rotating radius of the sliding bolt around the rotating plate is changed; the reciprocating stroke of the sliding bolt can be changed, so that the stroke length of reciprocating motion of the saw blade can be changed, the saw cutting depth is controlled, the long stroke is suitable for saw cutting of thick materials, and the short stroke is suitable for saw cutting of thin materials.

Description

Technical Field

[0001] The utility model relates to the technical field of reciprocating saws, in particular to a multi-gear adjustment structure of a handheld reciprocating saw. Background Art

[0002] A small handheld electric chain saw is a portable power tool mainly used in industries such as forest logging and garden pruning. It uses a motor-driven sprocket to drive the saw chain to rotate around the guide plate to perform cutting operations, thereby achieving the purpose of cutting and pruning wood, branches, etc.

[0003] The reference patent is titled: A chain saw gear adjustment mechanism (Patent Publication Number: CN213784546U), comprising a housing with a rotating hole provided on the housing; a trigger switch disposed within the housing, the trigger switch being electrically connected to the motor of the chain saw, the trigger switch being located on one side of the rotating hole and provided with a trigger button; a rotating rod disposed within the rotating hole, the upper end of the rotating rod being connected to a rotating plate disposed on the outside of the housing, and when the rotating rod presses the trigger button, the motor of the chain saw starts to work; a limiting structure disposed on one side of the middle position of the rotating hole, for limiting the rotating rod to a trigger position or a cut-off position at both ends of the rotating hole. Compared with the prior art, the advantages of the present invention are: the rotating rod is driven to rotate within the rotating hole by the rotating plate, thereby controlling the trigger button and realizing the on-off control of the motor, the operation is simple, the control is easy, and the invention has the advantages of being small in size and low in cost.

[0004] However, when implementing the above technical solution, there are the following problems: the sawing depth of the handheld reciprocating saw is often controlled by the reciprocating stroke length. The longer the reciprocating stroke length, the deeper the single reciprocating sawing depth. However, the reciprocating stroke length is fixed and cannot be adjusted according to the thickness of the material. If the material is too thick, the sawing depth will be insufficient and the sawing time will be prolonged. For this reason, the utility model provides a multi-speed adjustment structure for a handheld reciprocating saw. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a multi-gear adjustment structure for a handheld reciprocating saw, which solves the problem that the reciprocating stroke length is fixed and cannot be adjusted according to the thickness of the material.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a multi-speed adjustment structure for a handheld reciprocating saw, comprising a housing, a saw blade slidingly extending through the surface of the housing, an adjustment mechanism provided in the inner cavity of the housing for adjusting the reciprocating stroke of the saw blade, a control assembly provided on the surface of the housing for controlling the switch of an electrical component, the adjustment mechanism comprising;

[0007] An offset assembly includes a rotating plate, an adjusting groove is formed on the surface of the rotating plate, an adjusting plate is slidably connected to the inner surface of the adjusting groove, a threaded rod is threadedly connected to the inner surface of the adjusting plate, and a reciprocating disk is fixedly connected to the surface of the adjusting plate;

[0008] A sliding assembly, used for limiting the movement of the adjustment plate;

[0009] A rotating assembly, used for driving the threaded rod to rotate;

[0010] A reciprocating assembly, used to drive the saw blade to reciprocate;

[0011] The driving assembly is used to drive the rotating plate to rotate.

[0012] Preferably, the sliding assembly includes a sliding block, the surface of the sliding block is fixedly connected to the surface of the adjustment plate, and the inner surface of the adjustment groove is provided with a sliding groove.

[0013] Preferably, the rotating assembly includes an adjusting motor, the surface of the rotating plate is fixedly connected to the rotating box, and the surface of the output shaft of the adjusting motor is fixedly connected to one end of the threaded rod through a coupling.

[0014] Preferably, the reciprocating assembly includes a reciprocating rod, one end of which is fixedly connected to one end of the saw blade, one end of which is fixedly connected to a sliding bolt, and a circular groove is provided on the surface of the reciprocating disk.

[0015] Preferably, the driving assembly includes a driving motor, the surface of the output shaft of the driving motor is fixedly connected to a transmission shaft via a coupling, and one end of the transmission shaft is fixedly connected to the surface of the rotating plate.

[0016] Preferably, the control assembly includes a control knob, the surface of the control knob is rotationally connected to the surface of the housing, and the surface of the housing is slidably connected to a control switch.

[0017] Beneficial effects

[0018] The utility model provides a multi-gear adjustment structure for a handheld reciprocating saw. Compared with the prior art, it has the following advantages:

[0019] (1) The multi-speed adjustment structure of the handheld reciprocating saw starts the adjustment motor by turning the control knob to drive the threaded rod to rotate, and the threaded rod drives the adjustment plate to slide along the inner surface of the adjustment groove, and the adjustment plate drives the sliding bolt to move, that is, the rotation radius of the sliding bolt around the rotating plate changes. When the rotating plate rotates, the reciprocating stroke of the sliding bolt can be changed, thereby changing the stroke length of the reciprocating motion of the saw blade, thereby realizing the control of the sawing depth. The longer stroke is suitable for sawing thick materials, while the shorter stroke is suitable for sawing thin materials.

[0020] (2) The multi-speed adjustment structure of the handheld reciprocating saw is to start the driving motor by pressing the control switch to drive the rotating plate to rotate, the rotating plate drives the adjusting plate to rotate, the adjusting plate drives the reciprocating disk to rotate, the reciprocating disk drives the sliding bolt to slide along the inner surface of the circular groove, the sliding bolt drives the reciprocating rod to move back and forth, and the reciprocating rod drives the saw blade to move back and forth, so that when the stroke length of the saw blade's reciprocating motion is changed, it will not affect the saw blade's reciprocating motion to cut the object. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the reciprocating rod of the utility model;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the reciprocating disk of the utility model;

[0024] Figure 4 This is a schematic diagram of the three-dimensional structure of the rotating plate of the utility model.

[0025] In the figure: 1. Housing; 2. Saw blade; 3. Adjustment mechanism; 31. Offset assembly; 311. Rotating plate; 312. Adjustment slot; 313. Adjustment plate; 314. Threaded rod; 315. Reciprocating disk; 32. Sliding assembly; 321. Sliding block; 322. Sliding slot; 33. Rotating assembly; 331. Adjustment motor; 332. Rotating box; 34. Reciprocating assembly; 341. Reciprocating rod; 342. Sliding bolt; 343. Circular slot; 35. Drive assembly; 351. Drive motor; 352. Transmission shaft; 4. Control assembly; 41. Control knob; 42. Control switch. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] See also Figure 1-4 , the utility model provides a technical solution:

[0028] A multi-speed adjustment structure for a handheld reciprocating saw includes a housing 1, a saw blade 2 slidingly extending through the surface of the housing 1, an adjustment mechanism 3 disposed within the inner cavity of the housing 1 for adjusting the reciprocating stroke of the saw blade 2, a control assembly 4 disposed on the surface of the housing 1 for controlling the switching of electrical components, the control assembly 4 including a control knob 41, the surface of the control knob 41 being rotationally connected to the surface of the housing 1 and electrically connected to an adjustment motor 331, a control switch 42 being slidably connected to the surface of the housing 1 and electrically connected to a drive motor 351;

[0029] The regulating mechanism 3 includes:

[0030] The offset assembly 31 includes a rotating plate 311 having an adjustment slot 312 defined on its surface. An adjustment plate 313 is slidably connected to the inner surface of the adjustment slot 312. A threaded rod 314 is threadedly connected to the inner surface of the adjustment plate 313. The threaded rod 314 extends through the rotating plate 311 and is rotatable relative to the rotating plate 311. A reciprocating disk 315 is fixedly connected to the surface of the adjustment plate 313.

[0031] The sliding assembly 32 is used to limit the movement of the adjustment plate 313. The sliding assembly 32 includes a sliding block 321. The surface of the sliding block 321 is fixedly connected to the surface of the adjustment plate 313. The inner surface of the adjustment groove 312 is formed with a sliding groove 322. The surface of the sliding block 321 is slidably connected to the inner surface of the sliding groove 322.

[0032] The rotating assembly 33 is used to drive the threaded rod 314 to rotate. The rotating assembly 33 includes an adjusting motor 331. The adjusting motor 331 is connected to an external power source and is a three-phase asynchronous motor. The surface of the rotating plate 311 is fixedly connected to the rotating box 332. The surface of the adjusting motor 331 is fixedly connected to the inner wall of the rotating box 332. The surface of the output shaft of the adjusting motor 331 is fixedly connected to one end of the threaded rod 314 via a coupling.

[0033] The reciprocating assembly 34 is used to drive the saw blade 2 to reciprocate. The reciprocating assembly 34 includes a reciprocating rod 341. One end of the reciprocating rod 341 is fixedly connected to one end of the saw blade 2. A sliding bolt 342 is fixedly connected to one end of the reciprocating rod 341. A circular groove 343 is formed on the surface of the reciprocating disk 315. The surface of the sliding bolt 342 is slidably connected to the inner surface of the circular groove 343.

[0034] The driving assembly 35 is used to drive the rotating plate 311 to rotate. The driving assembly 35 includes a driving motor 351. The driving motor 351 is connected to an external power supply and is a three-phase asynchronous motor. The surface of the driving motor 351 is fixedly connected to the inner wall of the housing 1. The surface of the output shaft of the driving motor 351 is fixedly connected to the transmission shaft 352 through a coupling. One end of the transmission shaft 352 is fixedly connected to the surface of the rotating plate 311. By pressing the control switch 42, the driving motor 351 is started to drive the rotating plate 311 to rotate. The rotating plate 311 drives the adjusting plate 313 to rotate. The adjusting plate 313 drives the reciprocating disk 315 to rotate. The reciprocating disk 315 drives the sliding bolt 342 to slide along the inner surface of the circular groove 343. The sliding bolt 342 drives the reciprocating rod 341 to reciprocate back and forth. The reciprocating rod 341 drives the saw blade 2 to reciprocate back and forth, so that when the stroke length of the reciprocating motion of the saw blade 2 is changed, it will not affect the reciprocating motion of the saw blade 2 to cut the object. By rotating the control knob 41, the adjustment motor 331 is started to drive the threaded rod 314 to rotate, and the threaded rod 314 drives the adjustment plate 313 to slide along the inner surface of the adjustment groove 312. The adjustment plate 313 drives the sliding bolt 342 to move, that is, the rotation radius of the sliding bolt 342 around the rotating plate 311 changes. When the rotating plate 311 rotates, the reciprocating stroke of the sliding bolt 342 can be changed, thereby changing the stroke length of the reciprocating motion of the saw blade 2, thereby realizing the control of the sawing depth. A longer stroke is suitable for sawing thick materials, while a shorter stroke is suitable for sawing thin materials.

[0035] When in use, the operator presses the control switch 42 to control the start of the drive motor 351, the drive motor 351 drives the transmission shaft 352 to rotate, the transmission shaft 352 drives the rotating plate 311 to rotate, the rotating plate 311 drives the adjustment plate 313 to rotate, the adjustment plate 313 drives the reciprocating disk 315 to rotate, the reciprocating disk 315 drives the sliding bolt 342 to slide along the inner surface of the circular groove 343, the sliding bolt 342 drives the reciprocating rod 341 to reciprocate back and forth, the reciprocating rod 341 drives the saw blade 2 to reciprocate back and forth, and the control knob 41 is turned to control the start of the adjustment motor. Machine 331, the adjusting motor 331 drives the threaded rod 314 to rotate, the threaded rod 314 drives the adjusting plate 313 to slide along the inner surface of the adjusting groove 312, the adjusting plate 313 drives the sliding block 321 to slide along the inner surface of the sliding groove 322, the adjusting plate 313 drives the reciprocating disk 315 to move, and the reciprocating disk 315 drives the sliding bolt 342 to move through the circular groove 343, that is, the rotation radius of the sliding bolt 342 around the rotating plate 311 changes. When the rotating plate 311 rotates, the reciprocating stroke of the sliding bolt 342 can be changed, that is, the reciprocating stroke of the saw blade 2 changes.

[0036] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0037] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-gear adjustment structure for a handheld reciprocating saw, comprising a housing (1), a saw blade (2) slidingly passing through the surface of the housing (1), characterized in that: The inner cavity of the housing (1) is provided with an adjustment mechanism (3) for adjusting the reciprocating stroke of the saw blade (2); the surface of the housing (1) is provided with a control component (4) for controlling the switch of the electrical element; the adjustment mechanism (3) comprises: The offset assembly (31) comprises a rotating plate (311), the surface of the rotating plate (311) is provided with an adjustment groove (312), the inner surface of the adjustment groove (312) is slidably connected to an adjustment plate (313), the inner surface of the adjustment plate (313) is threadedly connected to a threaded rod (314), and the surface of the adjustment plate (313) is fixedly connected to a reciprocating disk (315); A sliding assembly (32) for limiting the movement of the adjustment plate (313); A rotating assembly (33) for driving the threaded rod (314) to rotate; A reciprocating assembly (34) for driving the saw blade (2) to reciprocate; The driving assembly (35) is used to drive the rotating plate (311) to rotate.

2. The multi-gear adjustment structure of a handheld reciprocating saw according to claim 1, characterized in that: The sliding assembly (32) comprises a sliding block (321), the surface of the sliding block (321) is fixedly connected to the surface of the adjustment plate (313), and the inner surface of the adjustment groove (312) is provided with a sliding groove (322).

3. The multi-gear adjustment structure of a handheld reciprocating saw according to claim 1, characterized in that: The rotating assembly (33) comprises an adjusting motor (331), the surface of the rotating plate (311) is fixedly connected to a rotating box (332), and the surface of the output shaft of the adjusting motor (331) is fixedly connected to one end of a threaded rod (314) via a coupling.

4. The multi-gear adjustment structure of a handheld reciprocating saw according to claim 1, characterized in that: The reciprocating assembly (34) comprises a reciprocating rod (341), one end of which is fixedly connected to one end of the saw blade (2), one end of which is fixedly connected to a sliding bolt (342), and a circular groove (343) is provided on the surface of the reciprocating disk (315).

5. The multi-gear adjustment structure of a handheld reciprocating saw according to claim 1, characterized in that: The driving assembly (35) comprises a driving motor (351), the surface of the output shaft of the driving motor (351) is fixedly connected to a transmission shaft (352) via a coupling, and one end of the transmission shaft (352) is fixedly connected to the surface of the rotating plate (311).

6. The multi-gear adjustment structure of a handheld reciprocating saw according to claim 1, characterized in that: The control assembly (4) comprises a control knob (41), the surface of the control knob (41) being rotationally connected to the surface of the housing (1), and the surface of the housing (1) being slidably connected to a control switch (42).

Images