Multifunctional hand saw

Abstract

The present invention provides a multifunctional hand saw, including an external hexagon screw, one end of which passes through a clip spring and a rotating shaft in sequence and is connected to an adjusting nut cap, and the external hexagon screw is fixedly connected to the clip spring, a saw blade is installed between the clip spring and the rotating shaft, a left fixed plate and a right fixed plate are installed at both ends of the rotating shaft, and the left fixed plate and the right fixed plate are fixedly connected by a support plate, a left hand grip and a switch body are installed above the left fixed plate, and the switch body is located between the left fixed plate and the left hand grip, a spring for cooperating with the movement of the switch body is installed on one side of the switch body, a switch toggle is installed above the switch body, a right hand grip is installed below the right fixed plate, and the left hand grip is connected to the right hand grip. The multifunctional hand saw described in the present invention has a structure that locks the saw blade in a vertical, inclined and horizontal opening state by toggling the switch toggle and the rotating shaft, and has stronger versatility and a wider range of application.

Description

Technical Field

[0001] The invention belongs to the field of industrial saws, and in particular relates to a multifunctional hand saw. Background Art

[0002] A saw is a tool used to cut wood, stone, steel, etc. It is generally made of steel sheets with sharp teeth on the edges. Some existing saw blades are used by combining with a handle. They are small in size and easy to use and carry. Such saws are also called hand saws, which are manual sawing tools. Traditional hand saws need to be pulled back and forth to achieve their working purpose, but they have the following defects: First, in certain specific cases, the hand saw cannot be pulled back and forth due to the small space, so it cannot be operated, which brings certain difficulties to the operator; second, the existing hand saw blades are generally fixed in length, and the angle adjustment during operation requires the adjustment of the entire hand saw. It is not easy to adjust the entire hand saw in a small range, and it is time-consuming and laborious to cut objects; third, the structure of the existing hand saw makes it impossible to replace the saw blade when it is worn or broken, or replacing the saw blade is very time-consuming, resulting in a waste of labor costs and time costs; fourth, the saw blade can only be kept in a horizontal open state when working, and cannot be used when the operating space is limited. Summary of the invention

[0003] In view of this, the present invention aims to provide a multifunctional hand saw, so as to provide a multifunctional hand saw with strong versatility, wide application range, convenient saw blade replacement and adjustable saw blade angle.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] A multifunctional hand saw comprises a rotating shaft, a saw blade, a retaining spring, and an external hexagon screw, wherein one end of the external hexagon screw passes through the retaining spring and the rotating shaft in sequence and is connected to an adjusting nut cap, and the external hexagon screw is fixedly connected to the retaining spring, and the saw blade is installed between the retaining spring and the rotating shaft, a left fixed plate and a right fixed plate are respectively installed at both ends of the rotating shaft, and the left fixed plate and the right fixed plate are fixedly connected through a supporting plate, a left-hand grip and a switch body are installed above the left fixed plate, and the switch body is located between the left fixed plate and the left-hand grip, a spring for cooperating with the movement of the switch body is installed on one side of the switch body, a switch toggle piece is installed above the switch body, a right-hand grip is installed below the right fixed plate, and the left-hand grip is connected to the right-hand grip.

[0006] Furthermore, the left fixing plate and the right fixing plate have the same structure. The left fixing plate includes a fixing plate body. The fixing plate body is a rectangular plate structure. A fixing hole is provided at one end of the fixing plate body, and a groove is provided at the inner edge of the fixing hole.

[0007] Furthermore, the retaining spring piece is a hollow disc structure, and a retaining platform is provided on one side, and the hexagonal handle of the hexagonal screw is welded to the retaining spring piece.

[0008] Furthermore, the rotating shaft includes an upper part, a middle part and a lower part of an integrated structure, and the upper part, the middle part and the lower part are arranged in sequence from top to bottom. The upper part is a hollow disc structure, a rotating shaft through hole is provided at the center of the upper part, and a plurality of rotating shaft slots are provided at the edge, wherein the angle between two rotating shaft slots is 180°, and the middle part and the lower part are both circular ring structures, and a limiting groove is provided on the same side of both.

[0009] Furthermore, the angle between two adjacent rotating shaft slots is 15° or 30°.

[0010] Furthermore, a limiting platform and a mounting platform are provided at the bottom of the upper portion, and the height of the limiting platform, the height of the mounting platform, and the height of the lower portion increase in sequence.

[0011] Furthermore, the outer diameter of the upper part is the same as the outer diameter of the lower part, the outer diameter of the middle part is larger than the outer diameter of the upper part, the outer part of the upper part is used to fit into the fixing hole of the left fixing plate, and the outer part of the lower part is used to fit into the fixing hole of the right fixing plate.

[0012] Furthermore, a stud is provided in the middle of the adjusting nut cap, and a screw hole is provided in the middle of the stud, the screw hole is used for threaded connection with the external hexagonal screw, and the edge of the adjusting nut cap is clamped with two rotating shaft slots located on the 180° radial line.

[0013] Furthermore, the switch body includes a switch body and a switch block. A switch mounting hole is provided above the switch body, and the switch mounting hole is a long hole. A switch toggle piece is installed above the switch mounting hole. A switch block is provided on the side of the switch body close to the rotating shaft, and a spring is installed on the side away from the rotating shaft, and the other end of the spring is connected to the reinforcement rib inside the left hand handle.

[0014] Compared with the prior art, the multifunctional hand saw of the present invention has the following advantages:

[0015] (1) The multifunctional hand saw of the present invention can lock the saw blade in vertical, inclined and horizontal opening states by toggling the switch toggle member and the rotating shaft, thereby realizing the use of the hand saw in multiple angles, having greater versatility and a wider range of applications.

[0016] (2) The multifunctional hand saw described in the present invention is provided with a rotating shaft, a retaining spring, an adjusting nut cap and an external hexagonal screw, so that the saw blade can be directly detached from the retaining spring base, so that the saw blade can be directly pulled out, thereby realizing convenient and fast replacement of the saw blade without disassembling the entire hand saw, while avoiding the need to replace the entire hand saw, greatly reducing labor costs and time costs.

[0017] (3) The multifunctional hand saw of the present invention is provided with an adjusting nut cap which can not only fix the hexagonal screw, but also adjust the angle of the rotating shaft, thereby adjusting the angle of the saw blade, thereby saving parts and overall space, and saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 An exploded view of the multifunctional hand saw according to an embodiment of the present invention;

[0020] Figure 2 A side view of the multifunctional hand saw according to an embodiment of the present invention;

[0021] Figure 3 for Figure 2 AA section view;

[0022] Figure 4 Schematic diagram of the rotating shaft according to the embodiment of the present invention Figure 1 ;

[0023] Figure 5 Schematic diagram of the rotating shaft according to the embodiment of the present invention Figure 2 ;

[0024] Figure 6 It is a side view of the left fixing plate according to the embodiment of the present invention;

[0025] Figure 7 A schematic diagram of a switch body according to an embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the positional relationship among the switch body, the rotating shaft, and the fixing plate according to an embodiment of the present invention;

[0027] Fig. 9 A diagram showing the positional relationship between the retaining spring and the hexagonal screw according to an embodiment of the present invention;

[0028] Fig.10 A schematic diagram of the multifunctional hand saw in an open state according to an embodiment of the present invention;

[0029] Fig.11 This is a schematic structural diagram of the multifunctional hand saw in an open state at an angle of 45° according to an embodiment of the present invention;

[0030] Fig.12 A schematic diagram of a multifunctional hand saw in a vertically opened state according to an embodiment of the present invention;

[0031] Fig.13A schematic diagram of a multifunctional hand saw in a folded state according to an embodiment of the present invention;

[0032] Fig.14 This is a structural schematic diagram of the multifunctional hand saw switch body according to an embodiment of the present invention being moved backwards and the shaft being rotated.

[0033] Description of reference numerals:

[0034] 1-left hand grip; 2-right hand grip; 3-spindle; 31-upper part; 32-spindle slot; 33-spindle through hole; 34-middle part; 35-limiting slot; 36-lower part; 37-mounting table; 38-limiting table; 4-saw blade; 5-reed plate; 51-card table; 6-external hexagonal screw; 7-adjusting nut cap; 8-left fixed plate; 81-fixed plate body; 82-groove; 83-fixing hole; 9-right fixed plate; 10-support plate; 11-switch toggle member; 12-switch body; 121-switch body; 122-switch mounting hole; 123-switch block; 13-spring; 14-screw; 15-nut; 16-adjusting handle. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0038] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0039] Multifunctional hand saw, such as Figures 1 to 14 As shown, it includes a left-hand grip 1, a right-hand grip 2, a rotating shaft 3, a saw blade 4, a clip spring 5, an external hexagonal screw 6, an adjusting nut cap 7, a left fixing plate 8, a right fixing plate 9, a support plate 10, a switch toggle member 11, a switch body 12, a spring 13, a screw 14, and a nut 15. One end of the external hexagonal screw 6 passes through the clip spring 5 and the rotating shaft 3 in sequence to connect to the adjusting nut cap 7, and the external hexagonal screw 6 and the clip spring 5 are fixedly connected. The saw blade 4 is installed between the clip spring 5 and the rotating shaft 3. The left fixing plate 8 and the right fixing plate 9 are respectively provided on both sides of the clip spring 5. A right fixed plate 9 is provided, and the left fixed plate 8 and the right fixed plate 9 are fixedly connected by a support plate 10. A left hand grip 1 and a switch body 12 are installed above the left fixed plate 8, and the switch body 12 is located between the left fixed plate 8 and the left hand grip 1. A spring 13 is installed on one side of the switch body 12, and a switch toggle member 11 is installed on the outer side of the left hand grip 1 so that the switch toggle member 11 and the switch body 12 cooperate to operate the switch body 12; a right hand grip 2 is installed below the right fixed plate 9, and the left hand grip 1 and the right hand grip 2 are detachably connected.

[0040] The left fixing plate 8 and the right fixing plate 9 have the same structure, and one side of both are welded to the supporting plate 10 .

[0041] The left fixing plate 8 includes a fixing plate body 81 , which is a rectangular plate structure. A fixing hole 83 is provided at one end of the fixing plate body 81 , and the diameter of the fixing hole is greater than the width of the rectangular plate. A groove 82 is provided at the inner edge of the fixing hole 83 .

[0042] In one or more embodiments, the retaining spring 5 is a hollow disc structure, and a retaining platform 51 is provided on one side, and the hexagonal handle of the hexagonal screw 6 and the retaining spring 5 are welded to form an integral structure.

[0043] The rotating shaft 3 includes an upper portion 31, a middle portion 34 and a lower portion 36 of an integral structure, and the upper portion 31, the middle portion 34 and the lower portion 36 are arranged in sequence from top to bottom. The upper portion 31 is a hollow disc structure, and a rotating shaft through hole 33 is provided at the center of the upper portion 31, and a plurality of rotating shaft clamping grooves 32 are provided at the edge, wherein two rotating shaft clamping grooves 32 are located on the same radial line, that is, the angle between the two rotating shaft clamping grooves 32 is 180°, and the two rotating shaft clamping grooves 32 are used to clamp with the bottom of the adjusting nut 7, so that the adjusting nut 7 drives the rotating shaft 3 to rotate; in one or more embodiments, the angle between two adjacent rotating shaft clamping grooves 32 is 15° or 30°, which can ensure the diversity of the angle rotation of the saw blade 4. The middle portion 34 and the lower portion 36 are both annular structures, and a limiting groove 35 is provided on the same side of the two, which is used to limit the position of the saw blade 4 when the saw blade 4 is inserted, so as to ensure the stability of the saw blade 4 when in use.

[0044] Preferably, a limit platform 38 and a mounting platform 37 are provided at the bottom of the upper part 31, and the heights of the limit platform 38, the mounting platform 37, and the lower part 36 are increased in sequence. When the clip spring 5 is installed below the upper part 31, the clip spring 5 will be located inside the lower part 36, that is, when the adjusting nut cap 7 is tightened, the height of the clip spring 5 is greater than the height of the lower part 36. When the adjusting nut cap 7 is loosened, the clip spring 5 moves downward under the action of gravity, and at this time, the lower part of the hexagonal screw 6 will be flush with the lower part of the lower part 36. The clip spring 5 is still located in the groove formed by the lower part 36 and the upper part 31, and will not fall out or shift. At the same time, it avoids the need to set an additional space for the clip spring 5 to fall, thereby increasing the compactness and stability of the multifunctional hand saw of the present application, and conveniently and quickly replacing the saw blade 4.

[0045] The outer diameter of the upper portion 31 is the same as the outer diameter of the lower portion 36 , and the outer diameter of the middle portion 34 is larger than the outer diameter of the upper portion 31 , so that the middle portion 34 acts like a boss to play a role of isolation and limitation.

[0046] The outer portion of the upper portion 31 is used to be sleeved with the fixing hole of the left fixing plate 8 , and the outer portion of the lower portion 36 is used to be sleeved with the fixing hole of the right fixing plate 9 .

[0047] The specific installation process of the saw blade 4 is as follows: when the spring clip 5 is installed under the upper part 31, due to the action of the limiting platform 38, a gap is formed between the spring clip 5 and the upper part 31, that is, the spring clip 5 and the limiting groove 35 cooperate to form a rectangular opening, the saw blade 4 is inserted into the rectangular opening, and the fixing hole of the saw blade 4 is sleeved with the clamping platform 51, and one end of the hexagonal screw 6 passes through the center hole of the spring clip 5 and the shaft through hole 33 in turn, and is threadedly connected with the adjusting nut 7. When the adjusting nut 7 is locked, the fixing hole of the saw blade 4 and the clamping platform 51 are pressed tightly, so that the saw blade 4 is fixed on the spring clip 5. Preferably, the clamping platform 51 is a circular protrusion. This allows the saw blade 4 to rotate along the clamping platform 51 under external force, while reducing the friction of the relative movement between the two, thereby extending the service life of the equipment.

[0048] In one or more real-time examples, an adjustment handle 16 is installed on the outer side of the middle portion 34 , and when the rotating shaft 3 needs to be rotated, the staff only needs to rotate the adjustment handle 16 .

[0049] In one or more embodiments, a stud is provided in the middle of the adjusting nut cap 7, and a screw hole is provided in the middle of the stud, and the screw hole is used for threaded connection with the external hexagon screw 6, and the edge of the adjusting nut cap 7 is clamped with two rotating shaft slots 32 located on the 180° radial line. This structure enables the adjusting nut cap 7 to not only fix the external hexagon screw 6, but also adjust the angle of the rotating shaft 3, and then adjust the angle of the saw blade 4, saving parts and overall space, and saving production costs.

[0050] The switch body 12 includes a switch body 121 and a switch stopper 123. A switch mounting hole 122 is provided above the switch body 121, and the switch mounting hole 122 is a long hole, which is convenient for the switch toggle member 11 to move left and right. The switch toggle member 11 is installed above the switch mounting hole 122. A switch stopper 123 is provided on the side of the switch body 121 close to the rotating shaft 3, and a spring 13 is installed on the side away from the rotating shaft 3. The other end of the spring 13 is connected to the reinforcing rib inside the left-hand grip 1, which is conducive to exerting the elastic performance of the spring 13 without adding redundant parts.

[0051] Several corresponding mounting holes are provided on the left-hand grip 1 and the right-hand grip 2. After the screws 14 pass through the mounting holes on the left-hand grip 1 and the right-hand grip 2 in turn, they are tightened with the nuts 15 to connect the left-hand grip 1 and the right-hand grip 2. When the left-hand grip 1 and the right-hand grip 2 need to be disassembled, it is only necessary to loosen the nuts 15, which is convenient for disassembly and maintenance.

[0052] The left-hand grip 1 and the right-hand grip 2 are both shell structures, and a plurality of reinforcing ribs are arranged inside, so that the service life of the left-hand grip 1 and the right-hand grip 2 is extended.

[0053] Two mounting openings are respectively provided on the left-hand grip 1 , one mounting opening is used to pass the adjusting nut 7 , and the other mounting opening is used to pass the switch toggle member 11 , so as to facilitate the adjustment of the direction of the saw blade 4 .

[0054] Working principle of multifunctional hand saw:

[0055] Installing the saw blade 4: Loosen the adjusting nut 7, insert the saw blade 4 into the rectangular opening formed by the spring sheet 5 and the limiting groove 35, and sleeve the fixing hole of the saw blade 4 with the clamping platform 51. After one end of the external hexagon screw 6 passes through the center hole of the clamping spring sheet 5 and the shaft through hole 33 in sequence, tighten the adjusting nut 7. At this time, press the fixing hole of the saw blade 4 and the clamping platform 51 tightly, so that the saw blade 4 is fixed on the clamping spring sheet 5.

[0056] Removing the saw blade 4: loosen the adjusting nut nut 7, the retaining spring 5 moves downward under the action of gravity, the fixing hole of the saw blade 4 is disengaged from the retaining platform 51, and the saw blade 4 can be directly pulled out from the rectangular opening formed by the retaining spring 5 and the limiting groove 35, thereby realizing convenient and quick replacement of the saw blade 4 without disassembling the entire hand saw.

[0057] Adjusting the angle: the staff member pushes the switch toggle member 11 backward (i.e., away from the end of the rotating shaft 3), and the switch block 123 of the switch body 12 disengages from the rotating shaft slot 32. After rotating the rotating shaft 3 by adjusting the nut cap 7 or rotating the adjusting handle 16 to a predetermined position, the staff member releases the switch toggle member 11, so that the switch block 123 is inserted into the rotating shaft slot 32 under the action of the spring 13, and the saw blade 4 can be locked in the structure of vertical, oblique 45° and horizontal open states, so that it can be used in multiple angles.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Multifunctional hand saw, characterized by: It includes a rotating shaft, a saw blade, a clip spring, and an external hexagon screw. One end of the external hexagon screw passes through the clip spring and the rotating shaft in sequence and is connected to the adjusting nut cap, and the external hexagon screw is fixedly connected to the clip spring. The saw blade is installed between the clip spring and the rotating shaft. A left fixed plate and a right fixed plate are installed at both ends of the rotating shaft, and the left fixed plate and the right fixed plate are fixedly connected through a supporting plate. A left-hand grip and a switch body are installed above the left fixed plate, and the switch body is located between the left fixed plate and the left-hand grip. A spring for cooperating with the movement of the switch body is installed on one side of the switch body. A switch toggle is installed above the switch body, and a right-hand grip is installed below the right fixed plate, and the left-hand grip is connected to the right-hand grip. The retaining spring is a hollow disc structure, and a clamping platform is provided on one side; the rotating shaft includes an upper part, a middle part and a lower part of an integrated structure, and the upper part, the middle part and the lower part are arranged in sequence from top to bottom, the upper part is a hollow disc structure, a rotating shaft through hole is provided at the center of the upper part, and a plurality of rotating shaft clamping grooves are provided at the edge, wherein the angle between two rotating shaft clamping grooves on the radial line is 180°, the middle part and the lower part are both circular ring structures, and a limiting groove is provided on the same side of the two; a stud is provided in the middle part of the adjusting nut cap, and a screw hole is provided in the middle part of the stud, and the screw hole is used for threaded connection with an external hexagonal screw, and the edge of the adjusting nut cap is clamped with two rotating shaft clamping grooves located on the 180° radial line; the switch body includes a switch body and a switch stopper, a switch mounting hole is provided above the switch body, and the switch mounting hole is a long strip hole, a switch toggle piece is installed above the switch mounting hole, a switch stopper is provided on the side of the switch body close to the rotating shaft, a spring is installed on the side away from the rotating shaft, and the other end of the spring is connected to the reinforcing rib inside the left-hand grip.

2. The multifunctional hand saw according to claim 1, characterized in that: The left fixing plate and the right fixing plate have the same structure. The left fixing plate comprises a fixing plate body. The fixing plate body is a rectangular plate structure. A fixing hole is arranged at one end of the fixing plate body. A groove is arranged at the inner edge of the fixing hole.

3. The multifunctional hand saw according to claim 1, characterized in that: The hexagonal shank of the external hexagonal screw is welded to the retaining spring.

4. The multifunctional hand saw according to claim 1, characterized in that: The included angle between two adjacent rotating shaft slots is 15° or 30°.

5. The multifunctional hand saw according to claim 1, characterized in that: A limiting platform and a mounting platform are provided at the bottom of the upper part, and the height of the limiting platform, the height of the mounting platform and the height of the lower part increase in sequence.

6. The multifunctional hand saw according to claim 1, characterized in that: The outer diameter of the upper part is the same as that of the lower part, the outer diameter of the middle part is larger than that of the upper part, the outer part of the upper part is used to sleeve the fixing hole of the left fixing plate, and the outer part of the lower part is used to sleeve the fixing hole of the right fixing plate.

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