Saw

Abstract

The utility model relates to the technical field of tools, in particular to a saw. The utility model provides a saw which comprises a handle and a saw blade arranged on the handle. A mounting seat is arranged on the handle, an eccentric wheel fixing device is arranged on the mounting seat, the eccentric wheel fixing device comprises a rotatable eccentric wheel handle, and the saw blade can be fixed through rotation of the eccentric wheel handle after being inserted into the handle. The technical problem that in the prior art, a saw is not fast and convenient to disassemble is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of tools, in particular to a saw. BACKGROUND

[0002] A saw is a tool used for cutting wood, metal, or other materials. It typically consists of a long, thin blade (called a saw blade) and a handle. The saw blade has teeth designed to cut into the material and break it apart. The working principle of a saw is that by moving the saw blade back and forth on the material, the teeth will cut into and grab the material, then cut it apart as the saw blade moves. Different types of saws are suitable for different materials and cutting needs.

[0003] However, the current disassembly is not convenient, which makes it difficult to replace the saw blade. For example, a hand saw is disclosed in Chinese Utility Model Patent No. CN204724938U on October 28, 2015, which includes a saw body, a saw bow, and a saw blade connected between the saw body and the saw bow. The saw body is provided with a handle, the end of the saw bow is provided with a fixed head A hinged thereto, the lower part of the saw body is a positioning body, the fixed head B passes through the positioning body, the fixed head B is provided with a screw rod, the screw rod is provided with a nut, a spring is arranged between the nut and the positioning body, and the two ends of the saw blade are connected with the fixed head A and the fixed head B respectively. The fixed head A and the saw bow are connected through a hinge disc. The nut is a butterfly nut, which can be directly manually unscrewed or tightened without tools. The saw bow is provided with a hollow, which can reduce the weight of the saw. However, this patent needs to be clamped on the fixed head first, and then the butterfly nut is turned to fix it, which is not convenient enough in actual use.

[0004] Therefore, it is necessary to propose a saw that can be quickly and conveniently disassembled. SUMMARY

[0005] The utility model aims at overcoming the shortcomings of the prior art, and provides a saw, which aims to solve the technical problem of the prior art that the saw is not quick and convenient to disassemble.

[0006] To achieve the above-mentioned purpose, the utility model provides a saw, which comprises a handle and a saw blade arranged on the handle; an installation seat is arranged on the handle, an eccentric wheel fixing device is arranged on the installation seat, the eccentric wheel fixing device comprises a rotatable eccentric wheel handle, and the saw blade is inserted into the handle and can be fixed by rotating the eccentric wheel handle.

[0007] Preferably, an arcuate portion mounting hole is arranged above the handle, and an insertion slot is arranged at the bottom of the arcuate portion mounting hole.

[0008] As preferred, the insertion slot is a square slot, and a fixing sheet is arranged on the handle, with one side of the fixing sheet flush with the side of the insertion slot.

[0009] As preferred, a plurality of clamping protrusions are arranged on the fixing sheet.

[0010] As preferred, a plurality of stop blocks are arranged on the handle, forming an insertion slot between the fixing sheet and the stop blocks, and the fixing sheet is provided with an observation hole on the corresponding side of the stop blocks.

[0011] As preferred, the eccentric wheel fixing device comprises a screw nut arranged on the mounting seat, a screw rod arranged on the screw nut, and an eccentric wheel handle rotatably arranged on the screw rod.

[0012] As preferred, the mounting seat is in the shape of a hollow inner hexagon, and a tab is arranged at the end of the mounting seat away from the eccentric wheel handle; a fixing ring is arranged between the saw blade and the eccentric wheel handle; the fixing ring is arranged on the screw rod, and a circular arc slot is arranged on the side of the fixing ring close to the eccentric wheel handle.

[0013] Compared with the prior art, the saw provided by the utility model has the beneficial effects that:

[0014] During the dismounting process, only the eccentric wheel handle needs to be rotated, and the spring pushes open the fixing ring to loosen the saw blade, so that the saw blade can be dismounted. During the mounting of the saw blade, only the saw blade needs to be arranged against the insertion slot, the clamping protrusions and the insertion slot, and then the eccentric wheel handle is rotated and pressed into position, so that the saw blade can be fixed. The mounting and dismounting are very convenient and fast.

[0015] The features and advantages of the utility model will be described in detail in combination with the drawings and embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective structural schematic view of the saw of the utility model embodiment.

[0017] Figure 2 is a front view structural schematic view of the saw of the utility model embodiment.

[0018] Figure 3 is a rear view structural schematic view of the saw of the utility model embodiment.

[0019] Figure 4 is an enlarged structural schematic view of A of the saw of the utility model embodiment.

[0020] Figure 5 is a left view structural schematic view of the saw of the utility model embodiment.

[0021] Figure 6It is the three-dimensional structure schematic diagram of the embodiment of the utility model removes saw.

[0022] Figure 7 It is the three-dimensional structure schematic diagram of the eccentric wheel fixing device of the embodiment of the utility model.

[0023] Among them:

[0024] 1-handle; 11-mounting seat; 111-tab; 12-arcuate portion mounting hole; 13-insertion slot; 14-fixing piece; 141-connection protrusion; 142-observation hole; 15-stop block; 2-saw blade; 3-eccentric wheel fixing device; 31-eccentric wheel handle; 32-nut; 33-screw; 34-fixing ring; 341-circular arc groove; 35-spring; 4-insertion slot. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantage of the utility model more clear and explicit, the following through the drawing and embodiment, the utility model is further detailed.But it should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the scope of the utility model.In addition, in the following description, the description of the known structure and technology is omitted, so as to avoid unnecessary confusion of the concept of the utility model.

[0026] In the description of the utility model, it should be explained that when the element is called "fixed to" or "set to" another element, it can be directly on another element or indirectly on another element.When an element is called "connected to" another element, it can be directly connected to another element or indirectly connected to another element.

[0027] In the description of the utility model, it should be explained that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawing, or the orientation or positional relationship of the product in use, which is only for the convenience of describing the invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the invention.In addition, the terms "first", "second", "third" and the like are only used for differentiation, and cannot be understood as indicating or implying relative importance.By this, the features limited by "first", "second" can be explicitly or implicitly included one or more features.In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.The meaning of "several" is one or more, unless otherwise specifically limited.

[0028] In the description of the utility model, still need to explain, unless another explicit provision and limitation, term '' set '', '' install '', '' link '', '' connect '' should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through intermediate medium, can be two element internal communication. For ordinary skilled person in the art, can understand the specific meaning of the above-mentioned term in the present application according to specific circumstances.

[0029] Referring to Figure 1 And Figure 5 The utility model embodiment provides a saw, including handle 1 and the saw blade 2 of setting on the handle 1. Handle 1 is provided with mounting seat 11, eccentric wheel fixing device 3 is set on mounting seat 11, and the eccentric wheel fixing device 3 includes a rotatable eccentric wheel handle 31. The saw blade 2 is set between mounting seat 11 and eccentric wheel handle 31. The saw blade 2 is inserted in the handle 1 back and can be fixed by the rotation of eccentric wheel handle 31. Eccentric wheel handle 31 is cam-like, and eccentric motion in the rotation process, and eccentric wheel handle 31 will extrude saw blade 2 in the rotation process, so as to fix saw blade 2.

[0030] Referring to Figure 6 In an alternative embodiment, the upper portion of the handle 1 is provided with an arcuate portion mounting hole 12. When the saw blade is not directly installed, the arcuate portion mounting hole 12 can be used to install an arcuate portion structure to form an arcuate saw frame. The bottom of the arcuate portion mounting hole 12 is provided with an insertion slot 13. The saw blade 2 is inserted into the arcuate portion mounting hole 12 along the insertion slot 13. The insertion slot 13 makes it easier to align the position during installation.

[0031] Referring to Figure 6 In an alternative embodiment, the insertion slot 13 is a square slot. The handle 1 is provided with a fixing piece 14. One side of the fixing piece 14 is flush with the side of the insertion slot 13. Figure 6 For example, the left side of the insertion slot 13 and the right side of the fixing piece 14 are on the same plane. During installation, the saw blade 2 is installed by abutting against the side of the fixing piece 14.

[0032] Referring to Figure 2 And Figure 5 In an alternative embodiment, the fixing piece 14 is provided with a plurality of clamping protrusions 141. The clamping protrusion 141 is preferably one. The saw blade 2 has a corresponding clamping hole. The clamping protrusion 141 and the clamping hole cooperate to prevent the saw blade from shaking up and down.

[0033] Referring to Figure 2 And Figure 3In an alternative embodiment, the handle 1 is provided with several stoppers 15, and the stoppers 15 and the fixing piece 141 form a slot 4; the fixing piece 141 is provided with an observation hole 142 on the corresponding side of the stopper 15. Preferably, the stopper 15 is two, and the saw blade 2 is fixed at the upper and lower positions, which is more stable in use.

[0034] Referring to Figure 4 , Figure 6 and Figure 7 , in an alternative embodiment, the eccentric wheel fixing device 3 comprises a nut 32 provided on the mounting seat 11, a screw rod 33 provided on the nut 32, and an eccentric wheel handle 31 rotatably provided on the screw rod 33. The mounting seat 11 is a hollow internal hexagonal shape, and the mounting seat 11 is provided with a tab 111 at the end away from the eccentric wheel handle 31; a fixing ring 34 is provided between the saw blade 2 and the eccentric wheel handle 31; the fixing ring 34 is provided on the screw rod 33, and the fixing ring 34 is provided with a circular arc groove 341 on the side close to the eccentric wheel handle 31.

[0035] Referring to Figure 7 , in an alternative embodiment, a spring 35 is provided between the fixing ring 34 and the nut 32, and the spring 35 is sleeved on the screw rod 33. The fixing ring 34 is provided with a small circular table on the side close to the spring 35. When the eccentric wheel handle 31 is fixed, the small circular table is clamped into the hole of the saw blade 2, and the position of the fixing ring 34 connected with the small circular table is larger than the outer diameter of the small circular table, which can clamp the saw blade 2. That is, the small circular table is adapted to the hole of the saw blade 2, and the fixing ring 34 can press the saw blade 2, so that the fixing effect is better. When the eccentric wheel handle 31 is loosened, the spring 35 can pop the fixing ring 34, so that it is more convenient to disassemble the saw blade and replace other saw blades.

[0036] The specific installation method of the eccentric wheel fixing device 3 is as follows: first, the nut 32 is clamped into the mounting seat 11, and the screw rod 33 is screwed into the nut 32 after passing through the fixing ring 34. The other end of the nut 32 is provided with a hole, and the eccentric wheel handle 31 is fixed after being pulled out through the hole. The eccentric wheel handle 31 is rotated along the circular arc groove 341 to control the tightness of the saw blade 2. The distance of the screw rod 33 screwed into the nut 32 can control the pressing force of the saw blade 2.

[0037] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A saw comprising a handle (1) and a saw blade (2) arranged on the handle (1); characterized in that: The handle (1) is provided with a mounting seat (11), an eccentric wheel fixing device (3) is arranged on the mounting seat (11), the eccentric wheel fixing device (3) comprises a rotatable eccentric wheel handle (31), and the saw blade (2) is inserted into the handle (1) and can be fixed by rotating the eccentric wheel handle (31).

2. A saw as claimed in claim 1, characterized in that: An arcuate portion mounting hole (12) is arranged above the handle (1), and an insertion slot (13) is arranged at the bottom of the arcuate portion mounting hole (12).

3. A saw as claimed in claim 2, characterized in that: The insertion slot (13) is a square slot, the handle (1) is provided with a fixing sheet (14), and one side surface of the fixing sheet (14) is flush with a side surface of the insertion slot (13).

4. A saw as claimed in claim 3, characterized in that: A plurality of clamping protrusions (141) are arranged on the fixing sheet (14).

5. A saw as claimed in claim 4, characterized in that: A plurality of stop blocks (15) are arranged on the handle (1), an insertion slot (4) is formed between the stop blocks (15) and the fixing sheet (14), and an observation hole (142) is arranged on the corresponding side of the fixing sheet (14) of the stop blocks (15).

6. A saw as claimed in any one of claims 1-5, characterized in that: The eccentric wheel fixing device (3) comprises a screw nut (32) arranged on the mounting seat (11), a screw rod (33) arranged on the screw nut (32), and a rotatable eccentric wheel handle (31) arranged on the screw rod (33).

7. A saw as claimed in claim 6, characterized in that: The mounting seat (11) is in a hollow internal hexagonal shape, one end of the mounting seat (11) away from the eccentric wheel handle (31) is provided with a tab (111), a fixing ring (34) is arranged between the saw blade (2) and the eccentric wheel handle (31), the fixing ring (34) is arranged on the screw rod (33), and one side of the fixing ring (34) close to the eccentric wheel handle (31) is provided with a circular arc slot (341).

8. A saw as claimed in claim 7, characterized in that: A spring (35) is arranged between the fixing ring (34) and the screw nut (32), the spring (35) is sleeved on the screw rod (33), and one side of the fixing ring (34) close to the spring (35) is provided with a small circular table.

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