Mini saw

Abstract

The utility model discloses a mini saw, which comprises a C-shaped saw frame with a handle at one end and a saw blade mounted on the C-shaped saw frame, and is characterized in that a pressing structure is arranged at one end, far away from the handle, of the C-shaped saw frame, the pressing structure comprises a pressing block and a pressing driving piece, a first pressing surface is arranged at the end part of the C-shaped saw frame, and a second pressing surface is arranged at the other end of the C-shaped saw frame. A first pressing face is arranged on the C-shaped saw frame, a second pressing face opposite to the first pressing face is arranged on the pressing block, a clamping gap used for containing the saw blade is formed between the first pressing face and the second pressing face, and the pressing driving piece is used for driving the pressing block to be away from or close to the C-shaped saw frame so as to press or loosen the saw blade located in the clamping gap. According to the C-shaped saw frame, the saw blade installed on the C-shaped saw frame is pressed and loosened through the pressing structure, and the saw blade can be rapidly detached.

Description

TECHNICAL FIELD

[0001] The utility model relates to cutting tool field, concretely relates to a mini saw. BACKGROUND

[0002] Hacksaws are useful tools for cutting various types of media including metal, and play an indispensable role in daily life and production processing. A hacksaw includes a frame and a blade, and the blade has mounting holes at both ends. The blade is mounted on the frame by pin hole engagement during use. The hacksaw usually further includes a tensioning mechanism at a position opposite to the handle on the frame. The tensioning mechanism pulls one of the pins to increase the tension on the blade by stretching the blade between the mounting holes.

[0003] After use, the blade should be removed from the hacksaw to prevent deformation of the frame and prolong the service life of the frame. Currently, the tensioning mechanism on the frame generally adopts a bolt structure. The nut is rotated to move the screw rod, thereby changing the tension of the blade. When the tension of the blade completely disappears, the blade can be removed. However, this method requires multiple rotations of the nut, which is cumbersome and time-consuming to install. SUMMARY

[0004] To overcome the deficiencies of the prior art, the utility model provides a mini saw capable of quickly disassembling the blade.

[0005] The utility model solves the technical problems by adopting the following technical scheme:

[0006] A mini saw includes a C-shaped frame having a handle at one end and a blade mounted on the C-shaped frame. The end of the C-shaped frame away from the handle is provided with a pressing structure. The pressing structure includes a pressing block and a pressing drive member. The end of the C-shaped frame is provided with a first pressing surface. The pressing block is provided with a second pressing surface opposite to the first pressing surface. A clamping gap for accommodating the blade is formed between the first pressing surface and the second pressing surface. The pressing drive member is used to drive the pressing block away from or close to the C-shaped frame to press or release the blade in the clamping gap.

[0007] As a further improvement of the above technical scheme, the pressing drive member includes a connecting rod and an adjusting block connected to one end of the connecting rod. The pressing block is connected to the other end of the connecting rod. The C-shaped frame is provided with a through hole. The connecting rod is movably connected to the through hole. A cam surface structure is provided between the adjusting block and the C-shaped frame. The cam surface structure is used to drive the adjusting block away from or close to the C-shaped frame when the adjusting block rotates, thereby driving the pressing block close to or away from the C-shaped frame.

[0008] As a further improvement of the above technical solution, the C-shaped saw frame is provided with a counterbore at one end of the through hole close to the adjusting block, the bottom surface of the counterbore is provided with a first cam surface, the adjusting block is provided with a second cam surface in sliding contact with the first cam surface, and the first cam surface and the second cam surface form the cam surface structure.

[0009] As a further improvement of the above technical solution, the top of the first cam surface is provided with a circular arc protrusion, the low end of the second cam surface is provided with an arc-shaped clamping groove, and when the circular arc protrusion is clamped into the arc-shaped clamping groove, the saw blade is in a compressed state.

[0010] As a further improvement of the above technical solution, the first cam surface is centrally symmetrically provided with two along the bottom surface of the counterbore, and correspondingly, the second cam surface is centrally symmetrically provided with two along the bottom surface of the adjusting block.

[0011] As a further improvement of the above technical solution, the adjusting block is connected with a handle, and the handle is provided with anti-skid lines.

[0012] As a further improvement of the above technical solution, the C-shaped saw frame is provided with a receiving groove at one end of the through hole close to the compression block, and the compression block is located in the receiving groove.

[0013] As a further improvement of the above technical solution, the C-shaped saw frame is further provided with an L-shaped cutout, one side surface of the L-shaped cutout forms the first compression surface, the other side surface of the L-shaped cutout forms a positioning surface, and the back of the saw blade abuts against the positioning surface.

[0014] As a further improvement of the above technical solution, the C-shaped saw frame is provided with a fixed arm at one end away from the compression structure, the fixed arm is provided with a limiting groove, and one end of the saw blade away from the compression structure is embedded in the limiting groove.

[0015] As a further improvement of the above technical solution, the handle comprises an upper shell and a lower shell connected in a detachable manner, and the fixed arm is fixedly connected in the handle when the upper shell and the lower shell are connected.

[0016] The utility model discloses the beneficial effect is: through the compression structure to the saw blade installed on the C-shaped saw frame is compressed, specific, when the saw blade is placed in the clamping gap, through the compression drive piece drive compression block close to C-shaped saw frame to reduce the clamping gap, then the saw blade is clamped on C-shaped saw frame to realize the installation fixed of saw blade. When needing to unload the saw blade, only need to reverse operation compression drive piece, can drive compression block away from C-shaped saw frame to increase the clamping gap, like this can easily take down the saw blade, and the operation is simple, quick. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model further illustrates below combining with the drawings and examples.

[0018] Figure 1 Is a structure schematic diagram of a mini saw in the embodiment of the utility model;

[0019] Figure 2 Is a structure split diagram of a mini saw in the embodiment of the utility model;

[0020] Figure 3 Is a structure schematic diagram of the compression structure of the mini saw in the embodiment of the utility model Figure 1 ;

[0021] Figure 4 Is a structure schematic diagram of the compression structure of the mini saw in the embodiment of the utility model Figure 2 ;

[0022] Figure 5 Is a structure schematic diagram of the clamping gap in the embodiment of the utility model;

[0023] Figure 6 Is a structure schematic diagram of the compression block of the mini saw in the embodiment of the utility model;

[0024] Figure 7 Is a structure schematic diagram of the adjusting block of the mini saw in the embodiment of the utility model;

[0025] Figure 8 Is a structure schematic diagram of the C type saw frame end of the mini saw in the embodiment of the utility model.

[0026] Reference signs: 1, C type saw frame;101, limit slot;102, through hole;103, counterbore;104, first cam surface;105, circular arc protrusion;106, accommodating groove;107, positioning surface;108, first compression surface;2, handle;201, upper shell;202, lower shell;3, anti-skid sleeve;4, saw blade;5, compression structure;501, compression block;502, screw rod;503, adjusting block;504, second cam surface;505, arc clamping groove;506, second compression surface;507, connecting rod;508, screw hole;509, handle. Specific implementation

[0027] The utility model discloses a concept, specific structure and the technical effect produced of the utility model will be clearly and completely described below in combination with the embodiment and the drawing, to fully understand the purpose, features and effects of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, and not all embodiments, based on the embodiment of the utility model, the other embodiments obtained by the person skilled in the art without paying creative labor all belong to the protection scope of the utility model. In addition, all the connection / connection relations involved in the patent do not mean that the components directly connect, but can form a better connection structure by adding or reducing the connection auxiliary parts according to the specific implementation situation. The various technical features in the utility model creation can be interactively combined without mutual contradiction and conflict.

[0028] Referring to Figure 1 And Figure 2 An embodiment of the utility model provides a kind of mini saw, including C-type saw frame 1 and saw blade 4, the one end of C-type saw frame 1 is provided with fixed arm, and fixed arm is provided with limit slot 101, and one end of saw blade 4 can be embedded into limit slot 101, to install the one end of saw blade 4 on C-type saw frame 1, and the one end of C-type saw frame 1 is provided with pressure structure 5, and the other end of saw blade 4 can be fixedly pressed on C-type saw frame 1 by pressure structure 5, so that the installation of saw blade 4 on C-type saw frame 1 can be realized.

[0029] It can be understood that the one end of C-type saw frame 1 is provided with handle 2, and handle 2 includes detachably connected upper shell 201 and lower shell 202, and the fixed arm is fixedly connected in handle 2 when upper shell 201 is connected with lower shell 202, and handle 2 is used as the control position of staff using mini saw.

[0030] Further, anti-skid sleeve 3 is provided on handle 2 to increase the friction when staff holds handle 2, and anti-skid sleeve 3 can be made of rubber, silica gel and the like, has elasticity and is convenient to install, and the production process is mature and the cost is low.

[0031] In the embodiment, steel saw blade 4 can be used for saw blade 4 to adapt to more medium cutting work.

[0032] Referring to Figures 2-8 Pressure structure 5 includes pressure block 501 and pressure driving part, and the end of C-type saw frame 1 is provided with first pressure surface 108, and the second pressure surface 506 opposite to first pressure surface 108 is provided on pressure block 501, and the clamping gap for accommodating saw blade 4 is formed between first pressure surface 108 and second pressure surface 506, and pressure driving part is used to drive pressure block 501 away from or close to C-type saw frame 1 to press or loosen saw blade 4 located in clamping gap.

[0033] Specifically, the pressing driving member comprises a connecting rod 507 and an adjusting block 503 connected to one end of the connecting rod 507, and the pressing block 501 is connected to the other end of the connecting rod 507, the C-shaped saw frame 1 is provided with a through hole 102, the connecting rod 507 is movably connected in the through hole 102, and a cam surface structure is arranged between the adjusting block 503 and the C-shaped saw frame 1, the cam surface structure is used for driving the adjusting block 503 to move away from or close to the C-shaped saw frame 1 when the adjusting block 503 rotates, so as to drive the pressing block 501 to move close to or away from the C-shaped saw frame 1.

[0034] More specifically, the C-shaped saw frame 1 is provided with a counterbore 103 at one end of the through hole 102 close to the adjusting block 503, the bottom surface of the counterbore 103 is provided with a first cam surface 104, and the adjusting block 503 is provided with a second cam surface 504 in sliding contact with the first cam surface 104, and the first cam surface 104 and the second cam surface 504 form a cam surface structure.

[0035] That is, in the utility model, when external force drives the adjusting block 503 to rotate, the second cam surface 504 at the bottom of the adjusting block 503 and the first cam surface 104 on the C-shaped saw frame 1 are relatively displaced, since both are provided with cam surfaces, the height of the cam surface gradually increases or decreases, that is, when the two are relatively in sliding contact, the first cam surface 104 drives the adjusting block 503 to gradually move away from or close to the counterbore 103, when the first cam surface 104 drives the adjusting block 503 to move upwards to gradually move away from the counterbore 103, the connecting rod 507 and the pressing block 501 at the other end of the connecting rod 507 are driven to move upwards, so that the pressing block 501 moves close to the C-shaped saw frame 1, so that the clamping gap is small, and the saw blade 4 is pressed; when it is required to remove the saw blade 4, the adjusting block 503 is only required to be reversely rotated, the first cam surface 104 drives the adjusting block 503 to move downwards to gradually move close to the counterbore 103, and the pressing block 501 is synchronously driven to move downwards to move away from the C-shaped saw frame 1, so that the clamping gap is large, and the saw blade 4 is loosened, at this time, the saw blade 4 can be pulled out in the direction away from the limiting groove 101. As known from the above, the operation of installation and dismounting of the saw blade 4 in the utility model is simple and fast, and compared with the existing bolt locking mode which requires repeated rotation of many circles to realize the loosening and tightening of the saw blade 4, the adjusting block 503 in the utility model is only required to be rotated by 90° to completely loosen the saw blade 4.

[0036] Further, referring to Figure 3 , Figure 7 and Figure 8 , the vertex of the first cam surface 104 is provided with a circular arc protrusion 105, and the low end of the second cam surface 504 is provided with an arc-shaped clamping groove 505, when the circular arc protrusion 105 is clamped into the arc-shaped clamping groove 505, the saw blade 4 is in a pressed state, the pressing structure 5 cannot easily loosen the saw blade 4 when the saw blade 4 is cut through the clamping of the circular arc protrusion 105 and the arc-shaped clamping groove 505, so that the stability of the saw blade 4 during cutting work is ensured.

[0037] It can be understood that the first cam surface 104 is provided with two along the center of the bottom surface of the hole 103, corresponding to the second cam surface 504 is provided with two along the center of the bottom surface of the adjustment block 503. With two groups of cam surface structure, through two-point support, can improve the stability of the structure.

[0038] In this embodiment, referring to Figure 6 and Figure 7 , the connecting rod 507 is integrally formed with the adjustment block 503, and the pressing block 501 is detachably connected between the connecting rods 507, so that the pressing structure 5 can be disassembled. Specifically, the pressing block 501 can adopt a screw rod 502, that is, the inner side surface of the head of the screw rod 502 as the second pressing surface 506, and the stem of the screw rod 502 is threadedly connected with the threaded hole 508 provided on the axis of the connecting rod 507, so as to realize the detachable connection of the pressing block 501 and the connecting rod 507.

[0039] Further, the adjustment block 503 is connected with a handle 509, and the handle 509 is provided with anti-skid lines. The handle 509 is used to operate the rotation of the adjustment block 503, so as to improve the operability of the adjustment block 503. In addition, the handle 509 is arranged vertically to the adjustment block 503. When the adjustment block 503 is rotated to the arc-shaped clamping groove 505, the handle 509 is close to the C-shaped saw frame 1. When the saw blade 4 needs to be loosened, the handle 509 is only needed to be pushed outward to make the arc-shaped clamping groove 505 away from the circular arc protrusion 105 (the adjustment block 503 is an injection molding part and has a certain elasticity), so as to drive the rotation of the adjustment block 503.

[0040] In the preferred embodiment, the C-shaped saw frame 1 is provided with a receiving groove 106 at one end of the through hole 102 close to the pressing block 501, and the pressing block 501 is located in the receiving groove 106, so as to realize the hidden structure arrangement, avoid the pressing block 501 protruding from the C-shaped saw frame 1, reduce the occupied space of the mini saw, and improve the aesthetic effect.

[0041] In addition, referring to Figure 4 and Figure 5 , the C-shaped saw frame 1 is further provided with an L-shaped cutout, and one side surface of the L-shaped cutout forms the first pressing surface 108, and the other side surface of the L-shaped cutout forms the positioning surface 107. The back of the saw blade 4 abuts against the positioning surface 107, so that the positioning of the saw blade 4 can be quickly realized when the saw blade 4 is installed, and then the pressing work of the saw blade 4 can be carried out, further improving the installation efficiency of the saw blade 4.

[0042] The above is a specific description of the preferred embodiment of the present application, but the present application is not limited to the described embodiment, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the present application, and these equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims

1. A mini saw comprising a C-shaped saw frame having a handle at one end and a saw blade mounted to the C-shaped saw frame, characterized in that: The C-shaped saw frame is provided with a pressing structure at one end away from the handle, the pressing structure comprises a pressing block and a pressing driving element, the C-shaped saw frame is provided with a first pressing surface at the end, the pressing block is provided with a second pressing surface opposite to the first pressing surface, a clamping gap for accommodating the saw blade is formed between the first pressing surface and the second pressing surface, and the pressing driving element is used to drive the pressing block away from or close to the C-shaped saw frame to press or release the saw blade in the clamping gap.

2. A mini saw according to claim 1, characterized in that: The pressing driving element comprises a connecting rod and an adjusting block connected to one end of the connecting rod, the pressing block is connected to the other end of the connecting rod, the C-shaped saw frame is provided with a through hole, the connecting rod is movably connected in the through hole, and a cam surface structure is arranged between the adjusting block and the C-shaped saw frame, which is used to drive the adjusting block away from or close to the C-shaped saw frame when the adjusting block rotates, so as to drive the pressing block close to or away from the C-shaped saw frame.

3. A mini saw according to claim 2, characterized in that: The C-shaped saw frame is provided with a counterbore at one end of the through hole close to the adjusting block, the bottom surface of the counterbore is provided with a first cam surface, the adjusting block is provided with a second cam surface in sliding contact with the first cam surface, and the first cam surface and the second cam surface form the cam surface structure.

4. A mini saw according to claim 3, characterized in that: The top point of the first cam surface is provided with a circular arc protrusion, the low end of the second cam surface is provided with an arc-shaped clamping groove, and when the circular arc protrusion is clamped into the arc-shaped clamping groove, the saw blade is in a pressed state.

5. A mini saw according to claim 4, characterized in that: The first cam surface is centrally and symmetrically provided with two along the bottom surface of the counterbore, and correspondingly, the second cam surface is centrally and symmetrically provided with two along the bottom surface of the adjusting block.

6. A mini saw according to claim 2, characterized in that: The adjusting block is connected with a handle, and the handle is provided with anti-skid lines.

7. A mini saw according to claim 2, characterized in that: The C-shaped saw frame is provided with an accommodating groove at one end of the through hole close to the pressing block, and the pressing block is located in the accommodating groove.

8. A mini saw according to claim 7, characterized in that: The C-shaped saw frame is also provided with an L-shaped cutout, one side surface of the L-shaped cutout forms the first pressing surface, the other side surface of the L-shaped cutout forms a positioning surface, and the back of the saw blade abuts against the positioning surface.

9. The mini saw of claim 1, wherein: The C-shaped saw frame is provided with a fixing arm at one end away from the pressing structure, the fixing arm is provided with a limiting groove, and one end of the saw blade away from the pressing structure is embedded in the limiting groove.

10. A mini saw according to claim 9, characterized in that: The handle comprises an upper shell and a lower shell connected in a detachable manner, and the fixing arm is fixedly connected in the handle when the upper shell and the lower shell are connected.

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