Hand saw

Abstract

The hand saw comprises a grip, a pressing piece, a locking device and a blade, an installation channel is arranged in the grip, one end of the installation channel penetrates through one end of the grip and forms an insertion opening, the blade is detachably installed in the insertion opening, the pressing piece is arranged at one end of the installation channel, and the locking device is arranged at the other end of the installation channel. The locking device is arranged at one end of the grip and used for driving the pressing piece to be close to or away from the blade. Through the application of the hand saw with the replaceable blade, the blade replacement work can be rapidly completed, and meanwhile the position of the blade can be stably kept; the cutting device is easy to operate and convenient to use, and the cutting efficiency of workers can be further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cutting tool technical field especially, it relates to a hand saw. BACKGROUND

[0002] At present, in most of the manual cutting work scene, often involves the cutting work of staff through hand saw to material. And with the continuous work, still need to cooperate with multiple spare blades, these spare blades are allowed to be replaceably installed on the handle of hand saw, and still can make the blade have different shapes to satisfy different cutting needs.

[0003] However, most of the hand saws that can replace the blade in the prior art often lock the blade through screws and other fasteners, and generally need to cooperate with screwdrivers and other tools when replacing the blade, which is very inconvenient, and if not tightened in place, the stability of the blade is also poor. SUMMARY

[0004] Therefore, in order to solve the above problems, the utility model provides a hand saw, which comprises: a handle, a pressing piece, a locking device and a blade, the handle is provided with an installation channel, one end of the installation channel penetrates one end of the handle and forms an insertion port, the blade is detachably installed in the insertion port, one end of the installation channel is provided with the pressing piece, the locking device is arranged at one end of the handle, and the locking device is used to drive the pressing piece to be close to or away from the blade.

[0005] In another preferred embodiment, the locking device comprises: a rotating sleeve and a pressing pin, the rotating sleeve is rotatably arranged at one end of the handle, a through hole is radially formed in one end of the handle, the through hole is communicated with the insertion port, the pressing pin is movably arranged in the through hole, the rotating sleeve is used to drive the movement of the pressing pin, and one end of the pressing pin movably contacts one side of the pressing piece away from the blade.

[0006] In another preferred embodiment, the inner side of the rotating sleeve has a guide wall, the guide wall has at least a proximal end and a distal end, the guide wall is arranged around the outer periphery of one end of the handle, and the proximal end is arranged close to the axis of the handle relative to the distal end.

[0007] In another preferred embodiment, the inner contour of the guide wall is arranged in a spiral line.

[0008] In another preferred embodiment, the guide wall further has a support portion, the support portion is arranged between the proximal end and the distal end, and the support portion is slidably supported on the handle.

[0009] In another preferred embodiment, the handle comprises a holding sleeve and an inner support, the holding sleeve is sleeved outside the inner support, the mounting channel is formed on the inner support, and one end of the inner support protrudes outwardly from the holding sleeve and is accommodated in the rotating sleeve.

[0010] In another preferred embodiment, the inner support has a large diameter portion and a small diameter portion, the large diameter portion is matched with the inner wall of the rotating sleeve, and the small diameter portion is arranged inside the guide wall.

[0011] In another preferred embodiment, the pressing member is arranged in a plate body structure.

[0012] In another preferred embodiment, one end of the pressing member protrudes outwardly from the insertion opening and is formed with a bending portion.

[0013] In another preferred embodiment, the pressing member is arranged with a friction-enhancing pattern, and the friction-enhancing pattern is in contact with the surface of the blade.

[0014] The utility model discloses the above technical scheme is compared with prior art and has the positive effect of:

[0015] Through the application of the utility model, a hand saw with replaceable blades is provided, which can quickly complete blade replacement work while stably maintaining the position of the blade; the utility model is simple to operate, convenient to use, and can further improve the cutting efficiency of workers. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is the overall schematic view of a hand saw of the utility model;

[0017] Fig. 2 It is the explosion schematic view of a hand saw of the utility model;

[0018] Fig. 3 It is the cross-sectional schematic view of a hand saw of the utility model.

[0019] IN THE DRAWINGS:

[0020] 1, handle; 2, pressing member; 3, locking device; 4, blade; 5, mounting channel; 6, insertion opening; 7, rotating sleeve; 8, pressing pin; 9, through hole; 10, guide wall; 11, support portion; 12, holding sleeve; 13, inner support; 14, large diameter portion; 15, small diameter portion; 16, bending portion. DETAILED DESCRIPTION

[0021] The technical solutions of the present application will be described clearly and completely in connection with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0022] In the description of the present application, it should be understood that the orientation or position relationship indicated by the terms "up", "down", "left", "right", "inner", "outer", "front", "back", "horizontal", "vertical" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application, and does not indicate or imply that the device or element referred to must have a particular orientation, so it cannot be understood as a limitation on the present application.

[0023] It should be particularly noted that "horizontal" and "vertical" in the present application are used to illustrate the approximate position relationship, and not strictly "horizontal plane" or "vertical plane".

[0024] As shown in Figs. 1 to 3 A hand saw according to a preferred embodiment includes a handle 1, a pressing member 2, a locking device 3 and a blade 4. The handle 1 is provided with an installation channel 5. One end of the installation channel 5 penetrates one end of the handle 1 and forms an insertion opening 6. The blade 4 is detachably installed in the insertion opening 6. The pressing member 2 is arranged at one end of the installation channel 5. The locking device 3 is arranged at one end of the handle 1. The locking device 3 is used to drive the pressing member 2 to move close to or away from the blade 4. Further, when it is necessary to replace the blade 4, the pressing member 2 can be moved away from the blade 4 by operating the locking device 3, so that the blade 4 can be pulled out of the installation channel 5 along the insertion opening 6. Then, a new blade 4 is inserted into the installation channel 5, and the locking device 3 is operated in reverse to press the blade 4 against the inner wall of the installation channel 5 by the pressing member 2, thereby completing the replacement of the blade 4.

[0025] Further, as a preferred embodiment, the locking device 3 includes a rotating sleeve 7 and a pressing pin 8. The rotating sleeve 7 is rotatably arranged at one end of the handle 1. A through hole 9 is formed in one end of the handle 1 in the radial direction. The through hole 9 is in communication with the insertion opening 6. The pressing pin 8 is movably arranged in the through hole 9. The rotating sleeve 7 is used to drive the movement of the pressing pin 8. One end of the pressing pin 8 movably contacts one side of the pressing member 2 away from the blade 4. Further, the rotating sleeve 7 provides a function for driving the movement of the pressing pin 8, so as to drive the movement of the pressing member 2 by driving the pressing pin 8.

[0026] Further, as a preferred embodiment, the rotating sleeve 7 is axially clamped to the end of the handle 1 by radial fitting or the like, and allows the rotating sleeve 7 to rotate around the axis of the handle 1. Further, the outer edge of the end of the handle 1 preferably has a protruding annular portion, and the inner edge of the end of the rotating sleeve 7 preferably has an annular concave groove portion, and the annular portion is rotatably arranged in the annular groove portion.

[0027] Further, as a preferred embodiment, the inner side of the rotating sleeve 7 has a guide wall 10, the guide wall 10 has at least a proximal end and a distal end, the guide wall 10 is arranged around the outer periphery of the end of the handle 1, and the proximal end is arranged closer to the axis of the handle 1 than the distal end. Further, when the user twists the rotating sleeve 7, the position of the pressing pin 8 along the axis of the handle 1 remains unchanged, the guide wall 10 rotates relative to the pressing pin 8, and the inner side surface of the guide wall 10 is gradually arranged closer to or farther away from the position of the through hole 9, thereby pressing or allowing the pressing pin 8 to exit outward, thereby realizing corresponding locking and unlocking.

[0028] Further, as a preferred embodiment, the distal end and the proximal end are arranged close to each other, and the distal end and the proximal end are respectively formed at the two ends of the guide wall 10.

[0029] Further, as a preferred embodiment, the inner contour of the guide wall 10 is arranged in a spiral line.

[0030] Further, as a preferred embodiment, the distal end and the proximal end are formed at the two ends of the spiral line.

[0031] Further, as a preferred embodiment, the guide wall 10 is formed by the gradually protruding inner wall of the rotating sleeve 7 along the circumferential direction.

[0032] Further, as a preferred embodiment, the guide wall 10 further has a support portion 11, the support portion 11 is arranged between the proximal end and the distal end, and the support portion 11 is slidably supported on the handle 1.

[0033] Further, as a preferred embodiment, the support portion 11 is arranged to protrude radially inward relative to the inner wall of the rotating sleeve 7.

[0034] Further, as a preferred embodiment, the handle 1 comprises a holding sleeve 12 and an inner support 13, the holding sleeve 12 is sleeved on the outer side of the inner support 13, the mounting channel 5 is formed on the inner support 13, and one end of the inner support 13 protrudes outward from the holding sleeve 12 and is accommodated in the rotating sleeve 7.

[0035] Further, as a preferred embodiment, the insertion opening 6 is formed at one end of the inner support 13.

[0036] Further, as a preferred embodiment, the inner support 13 has a large diameter portion 14 and a small diameter portion 15, the large diameter portion 14 is matched with the inner wall of the rotating sleeve 7, and the small diameter portion 15 is arranged on the inner side of the guide wall 10. Further, the large diameter portion 14 is used to match with the inner wall of the rotating sleeve 7 to form support during rotation, and the small diameter portion 15 is avoided from the inner wall of the rotating sleeve 7, especially allowing the guide wall 10 to pass.

[0037] Further, as a preferred embodiment, the pressing piece 2 is arranged in a plate body structure.

[0038] Further, as a preferred embodiment, one end of the pressing piece 2 protrudes outwardly from the insertion port 6 and forms a bending portion 16. Further, the bending direction of the bending portion 16 extends radially outwardly relative to the axis of the handle 1, so that a guide for the insertion of the blade 4 is formed on the side close to the blade 4.

[0039] Further, as a preferred embodiment, the pressing piece 2 is provided with friction-enhancing lines, which are in contact with the surface of the blade 4.

[0040] Further, as a preferred embodiment, the friction-enhancing lines include a plurality of transverse protrusions arranged in sequence along the length direction of the pressing piece 2.

[0041] Further, as a preferred embodiment, each transverse protrusion extends along the width direction of the pressing piece 2.

[0042] The above only describes the preferred embodiments of the present application, and does not limit the implementation and protection scope of the present application.

[0043] The present application further has the following implementation based on the above:

[0044] In a further embodiment of the present application, it further includes a limiting piece arranged in an open ring structure, the outer side of the limiting piece is closely attached to the guide wall 10, the limiting piece is sleeved on the support portion 11 at the opening, and the inner wall of the limiting piece is provided with a plurality of interval protrusions along the length direction. Further, the end of the pressing pin 8 can pass through the corresponding continuously arranged interval protrusions by interference extrusion, and the user can transmit a certain vibration feeling by repeatedly and slightly moving the pressing pin 8 along the axial direction, thereby improving the experience of the user when operating the locking device 3.

[0045] In a further embodiment of the present application, the outer edge of the blade 4 is provided with corresponding sawteeth.

[0046] In a further embodiment of the utility model, the end of the blade 4 is provided with a positioning hole, and the end of the installation channel 5 is configured with a corresponding protruding piece, which can be clamped in the positioning hole to form a limit.

[0047] In a further embodiment of the utility model, the end of the pressing piece 2 is provided with an L-shaped structure, which is clamped at the end of the inner support 13.

[0048] The above is only the preferred embodiment of the utility model, and does not limit the implementation and protection scope of the utility model. For those skilled in the art, it should be realized that the schemes obtained by equivalent replacement and obvious changes of the utility model specification and drawings should be included in the protection scope of the utility model.

Claims

1. A handsaw, characterized in that, include: The grip includes a clamping element, a locking device, and a blade. The grip has an installation channel, one end of which passes through one end of the grip and forms an insertion port. The blade is detachably installed in the insertion port. The clamping element is located at one end of the installation channel, and the locking device is located at one end of the grip. The locking device is used to move the clamping element closer to or away from the blade.

2. The handsaw according to claim 1, characterized in that, The locking device includes a rotating sleeve and a pressing pin. The rotating sleeve is rotatably disposed at one end of the handle. A through hole is radially opened at one end of the handle. The through hole communicates with the insertion port. The pressing pin is movably disposed in the through hole. The rotating sleeve is used to drive the movement of the pressing pin. One end of the pressing pin is movably in contact with the side of the clamping member away from the blade.

3. The handsaw according to claim 2, characterized in that, The inner side of the rotating sleeve has a guide wall, which has at least a proximal end and a distal end. The guide wall is arranged around the outer periphery of one end of the grip, and the proximal end is arranged close to the axis of the grip relative to the distal end.

4. The handsaw according to claim 3, characterized in that, The inner contour of the guide wall is arranged in a spiral shape.

5. The handsaw according to claim 3, characterized in that, The guide wall also has a support portion disposed between the proximal end and the distal end, and the support portion is slidably supported on the grip.

6. The handsaw according to claim 3, characterized in that, The grip includes a grip sleeve and an inner support. The grip sleeve is fitted onto the outside of the inner support. The mounting channel is formed on the inner support. One end of the inner support protrudes outward from the grip sleeve and is accommodated within the rotating sleeve.

7. The handsaw according to claim 6, characterized in that, The inner support has a large diameter portion and a small diameter portion. The large diameter portion mates with the inner wall of the rotating sleeve, and the small diameter portion is located on the inner side of the guide wall.

8. The handsaw according to claim 1, characterized in that, The clamping component is configured as a plate.

9. The handsaw according to claim 1, characterized in that, One end of the clamping member protrudes outward from the insertion port and forms a bent portion.

10. The handsaw according to claim 1, characterized in that, The clamping member is provided with friction-enhancing textures, which are in contact with the surface of the blade.

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