Jig saw with replaceable chuck assembly

Abstract

The utility model relates to a jig saw with a replaceable chuck assembly, which belongs to the technical field of jig saws and comprises a jig saw body, a reciprocating lever is arranged on the jig saw body, a limiting mechanism is arranged on the reciprocating lever, a limiting assembly is arranged at the bottom of the reciprocating lever, and the limiting mechanism comprises a sleeve slidably connected with the outer side of the reciprocating lever. A first cavity is formed in the reciprocating rod, a rotating rod is rotationally connected to the right side of the reciprocating rod, a first bevel gear is fixedly connected to the rotating rod, and worms are rotationally connected to the opposite sides of the inner bottom wall and the inner top wall of the first cavity. According to the jig saw with the replaceable chuck assembly, by arranging the limiting mechanism, the jig saw has the limiting function, the effect of limiting the sleeve is achieved, and therefore the sleeve can be conveniently and rapidly detached from the reciprocating rod, the sleeve can be conveniently replaced when abraded after being used for a long time, a user can conveniently use the jig saw, and the practicability of the jig saw is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of jigsaws, in particular to a jigsaw with a replaceable chuck assembly. Background Art

[0002] Jig saws are mainly used for cutting metals and non-ferrous metals. When cutting metals, they have stronger chip handling capabilities, larger saw blades, and higher efficiency when cutting wood and other wood products. Carbon steel jigsaws are used to cut various woods and non-metals. The saw blades are sharpened and conical, which allows for faster cutting and better chip handling capabilities.

[0003] For example, Chinese patent CN220240191U discloses a saw blade clamping mechanism for a jigsaw, comprising a reciprocating rod and a saw blade, a clamping body being arranged at the lower end of the reciprocating rod, the clamping body comprising a clamping head, the clamping head being fixedly connected to the reciprocating rod, a clamping groove being arranged at the middle part of the clamping head, the upper end of the saw blade extending into the clamping groove, two screw holes being arranged on one side of the clamping head, side clamping screws being sleeved inside the two screw holes, two clamping plates being arranged inside the clamping groove, two second limiting grooves being arranged on the other side of the inside of the clamping head, a top column being slidably arranged inside the second limiting groove, a colored ring being fixedly arranged at the outer end of the top column, however, the reciprocating rod and the clamping body are not convenient to disassemble, resulting in wear of the clamping body due to long-term use, which is inconvenient for subsequent use, and reducing the stability of the saw blade during use, therefore a jigsaw with a replaceable clamping head assembly is proposed to solve the above-mentioned problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a curved saw with a replaceable chuck assembly, which has the advantages of easy replacement, etc., and solves the problem that the reciprocating rod and the clamping body are inconvenient to disassemble, resulting in wear of the clamping body after long-term use and inconvenience in subsequent use, and reduces the stability of the saw blade when in use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a jig saw with a replaceable chuck assembly, comprising a jig saw body, a reciprocating rod is arranged on the jig saw body, a limit mechanism is arranged on the reciprocating rod, and a limit assembly is arranged at the bottom of the reciprocating rod;

[0006] The limiting mechanism includes a sleeve slidably connected to the outer side of a reciprocating rod, a first cavity is opened inside the reciprocating rod, a rotating rod is rotatably connected to the right side of the reciprocating rod, a No. 1 bevel gear is fixedly connected to the rotating rod, a worm is rotatably connected to the opposite side of the bottom wall and the inner top wall of the first cavity, a No. 2 bevel gear meshing with the No. 1 bevel gear is fixedly connected to the outer side of the worm, a bidirectional screw is rotatably connected between the left and right sides of the inner wall of the first cavity, a worm wheel meshing with the worm is fixedly connected to the outer side of the bidirectional screw, two movable plates are threadedly connected to the outer side of the bidirectional screw, the bottoms of the two movable plates are fixedly connected to support blocks, and the opposite sides of the two movable plates are fixedly connected to the limiting rod.

[0007] Furthermore, the limiting assembly includes a saw blade slidably connected to the inside of the sleeve, a second cavity is opened inside the sleeve, a positioning rod is slidably connected inside the second cavity, a limiting spring is sleeved on the outer side of the positioning rod, and a connecting plate is fixedly connected to the outer side of the positioning rod.

[0008] Furthermore, a turning handle for easy rotation is fixedly connected to the turning rod, and a handle for easy pulling is fixedly connected to the positioning rod.

[0009] Furthermore, a support groove is provided inside the reciprocating rod, and the inside of the support groove is slidably connected to the outside of the support block.

[0010] Furthermore, a limiting groove is provided inside the sleeve, and the size of the limiting groove matches the size of the limiting rod.

[0011] Furthermore, a connecting through hole is provided inside the saw blade, and the inside of the connecting through hole is slidably connected to the outside of the positioning rod.

[0012] Furthermore, a positioning groove is provided inside the sleeve, and the size of the positioning groove is matched with the size of the positioning rod.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] 1. The jig saw with a replaceable chuck assembly has a limiting function by setting a limiting mechanism, so as to achieve the effect of limiting the sleeve, thereby facilitating the quick disassembly of the sleeve on the reciprocating rod, and then facilitating the replacement of the sleeve when it is worn out after long-term use, which is convenient for users to use and increases the practicality of the jig saw.

[0015] 2. The jig saw with a replaceable chuck assembly has a limiting function by setting a limiting assembly, so as to achieve the effect of limiting and fixing the saw blade, thereby facilitating the rapid installation and removal of the saw blade, and further facilitating the replacement and maintenance of the saw blade, which is convenient for users to use and improves the practicality of the jig saw. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a side view of the sleeve structure of the utility model;

[0018] Figure 3 For this utility model Figure 2 A schematic diagram of the structure enlargement in the middle;

[0019] Figure 4 This is a schematic diagram of the limit rod structure of the utility model.

[0020] In the figure: 1. curved saw body; 2. reciprocating rod; 3. sleeve; 4. first cavity; 5. rotating rod; 6. No. 1 bevel gear; 7. worm; 8. No. 2 bevel gear; 9. bidirectional screw; 10. worm wheel; 11. movable plate; 12. support block; 13. limit rod; 14. saw blade; 15. second cavity; 16. positioning rod; 17. limit spring; 18. connecting plate; 19. turning handle; 20. handle. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 A jig saw with a replaceable chuck assembly in this embodiment includes a jig saw body 1, a reciprocating rod 2 is arranged on the jig saw body 1, a supporting groove is opened inside the reciprocating rod 2, a limiting mechanism is arranged on the reciprocating rod 2, and a limiting assembly is arranged at the bottom of the reciprocating rod 2.

[0023] It should be noted that, by providing the support block 12 and the support groove, the movable plate 11 is limitedly supported, thereby increasing the stability of the movable plate 11 during movement.

[0024] See also Figure 1-4In this embodiment, the limiting mechanism includes a sleeve 3 slidably connected to the outer side of the reciprocating rod 2, a limiting groove is provided inside the sleeve 3, a positioning groove is provided inside the sleeve 3, a first cavity 4 is provided inside the reciprocating rod 2, a rotating rod 5 is rotatably connected to the right side of the reciprocating rod 2, a rotating handle 19 for convenient rotation is fixedly connected to the rotating rod 5, a first bevel gear 6 is fixedly connected to the rotating rod 5, a worm 7 is rotatably connected to the opposite side of the inner bottom wall and the inner top wall of the first cavity 4, a second bevel gear 8 meshing with the first bevel gear 6 is fixedly connected to the outer side of the worm 7, a bidirectional screw 9 is rotatably connected between the left and right sides of the inner wall of the first cavity 4, and a worm wheel 10 meshing with the worm is fixedly connected to the outer side of the bidirectional screw 9.

[0025] It should be noted that the arrangement of the worm wheel 10 and the worm 7 is self-locking, which increases the stability of the sleeve 3 installed on the reciprocating rod 2.

[0026] See also Figure 1-4 In this embodiment, the outer side of the bidirectional screw 9 is threadedly connected with two movable plates 11, the bottoms of the two movable plates 11 are fixedly connected with support blocks 12, the inside of the support groove is slidably connected to the outer side of the support block 12, and the opposite sides of the two movable plates 11 are fixedly connected with a limiting rod 13, and the size of the limiting groove is adapted to the size of the limiting rod 13.

[0027] It should be noted that this facilitates quick disassembly of the sleeve 3 on the reciprocating rod 2, and further facilitates replacement of the sleeve 3 when it is worn out after long-term use.

[0028] See also Figure 1-4 In this embodiment, the limiting assembly includes a saw blade 14 that is slidably connected to the inside of the sleeve 3, a connecting through hole is opened inside the saw blade 14, a second cavity 15 is opened inside the sleeve 3, a positioning rod 16 is slidably connected inside the second cavity 15, the inside of the connecting through hole is slidably connected to the outside of the positioning rod 16, a handle 20 for easy pulling is fixedly connected to the positioning rod 16, the size of the positioning groove is adapted to the size of the positioning rod 16, a limiting spring 17 is sleeved on the outside of the positioning rod 16, and a connecting plate 18 is fixedly connected to the outside of the positioning rod 16.

[0029] It should be noted that the saw blade 14 is limited and fixed by providing a connecting through hole, and the stability of the saw blade 14 when limited and fixed by providing a positioning groove is further increased.

[0030] The working principle of the above embodiment is: the jigsaw with replaceable chuck assembly,

[0031] 1) When in use, by setting a limiting mechanism, the turning handle 19 is rotated, the turning handle 19 drives the turning rod 5 to rotate, the turning rod 5 drives the No. 1 bevel gear 6 to rotate, the No. 1 bevel gear 6 drives the No. 2 bevel gear 8 to rotate, the No. 2 bevel gear 8 drives the worm 7 to rotate, the worm 7 drives the worm wheel 10 to rotate, the worm wheel 10 drives the bidirectional screw 9 to rotate, the bidirectional screw 9 drives the two movable plates 11 to move relative to each other, and by setting a support block 12 and a support groove, the stability of the movable plate 11 during movement is increased, thereby driving the two limiting rods 13 to move relative to each other and be pulled out from the limiting grooves provided inside the sleeve 3, so as to facilitate the quick disassembly of the sleeve 3 on the reciprocating rod 2, and then facilitate the replacement of the sleeve 3 due to wear caused by long-term use.

[0032] 2) By setting a limit assembly, the handle 20 is pulled, and the handle 20 drives the positioning rod 16 to move to the right, and at the same time the connecting plate 18 squeezes the limit spring 17, so that the positioning rod 16 is pulled out from the inside of the positioning groove and shrinks to the inside of the second cavity 15, thereby facilitating the rapid installation and disassembly of the saw blade 14, and then facilitating the replacement and maintenance of the saw blade 14, which is convenient for users to use and improves the practicality of the jig saw.

[0033] The electrical components appearing in the text are all electrically connected to the controller and the power supply. The control method of the utility model is controlled by the controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power supply is also common knowledge in this field. The utility model is mainly used to protect mechanical devices, so the utility model will no longer explain the control method and circuit connection in detail.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A jigsaw with a replaceable chuck assembly, comprising a jigsaw body (1), characterized in that: The jigsaw body (1) is provided with a reciprocating rod (2), a limiting mechanism is provided on the reciprocating rod (2), and a limiting component is provided at the bottom of the reciprocating rod (2); The limiting mechanism comprises a sleeve (3) slidably connected to the outer side of the reciprocating rod (2); a first cavity (4) is provided inside the reciprocating rod (2); a rotating rod (5) is rotatably connected to the right side of the reciprocating rod (2); a first bevel gear (6) is fixedly connected to the rotating rod (5); a worm (7) is rotatably connected to the opposite side of the inner bottom wall and the inner top wall of the first cavity (4); a second bevel gear (8) meshing with the first bevel gear (6) is fixedly connected to the outer side of the worm (7); a bidirectional screw (9) is rotatably connected between the left and right sides of the inner wall of the first cavity (4); a worm wheel (10) meshing with the worm is fixedly connected to the outer side of the bidirectional screw (9); two movable plates (11) are threadedly connected to the outer side of the bidirectional screw (9); the bottoms of the two movable plates (11) are fixedly connected to support blocks (12); and the opposite sides of the two movable plates (11) are fixedly connected to limiting rods (13).

2. A jig saw with a replaceable chuck assembly according to claim 1, characterized in that: The limiting assembly comprises a saw blade (14) slidably connected to the inside of a sleeve (3); a second cavity (15) is provided inside the sleeve (3); a positioning rod (16) is slidably connected to the inside of the second cavity (15); a limiting spring (17) is sleeved on the outer side of the positioning rod (16); and a connecting plate (18) is fixedly connected to the outer side of the positioning rod (16).

3. A jig saw with a replaceable chuck assembly according to claim 2, characterized in that: The rotating rod (5) is fixedly connected with a rotating handle (19) for easy rotation, and the positioning rod (16) is fixedly connected with a handle (20) for easy pulling.

4. A jig saw with a replaceable chuck assembly according to claim 1, characterized in that: A support groove is provided inside the reciprocating rod (2), and the inside of the support groove is slidably connected to the outside of the support block (12).

5. A jig saw with a replaceable chuck assembly according to claim 1, characterized in that: A limiting groove is provided inside the sleeve (3), and the size of the limiting groove matches the size of the limiting rod (13).

6. A jig saw with a replaceable chuck assembly according to claim 2, characterized in that: A connecting through hole is provided inside the saw blade (14), and the inside of the connecting through hole is slidably connected to the outside of the positioning rod (16).

7. A jig saw with a replaceable chuck assembly according to claim 2, characterized in that: A positioning groove is provided inside the sleeve (3), and the size of the positioning groove matches the size of the positioning rod (16).

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