A hand saw

Abstract

The utility model discloses a hand saw, including saw bow and the saw blade of setting on saw bow, the saw bow includes bow body one and bow body two, the bow body one and bow body two are connected through detachable counterweight structure, one end of bow body one is connected with one end of saw blade, one end of bow body two is provided with movable spanner, the detachable connection of movable spanner with the other end of saw blade, when the movable spanner rotates to the other end of saw blade and is loose state, the detachable counterweight structure can be detached from between bow body one and bow body two or the detachable counterweight structure can connect together bow body one and bow body two. The utility model discloses its reasonable in design, and it can increase the counterweight piece according to need, is favorable to avoid the problem that user appears to float when actually sawing wood and can not saw better, is more relaxed and simple on the operation, and the practicality is stronger.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool technology, and in particular to a hand saw. Background Technology

[0002] Hand saws are a common and widely used tool among hand tools for cutting. However, existing hand saws generally consist of a back bar, a front cantilever, and a rear cantilever. The back bar connects the front and rear cantilever, and the saw blade is installed between the front and rear cantilever. Since the weight of the back bar is usually fixed, if it is too light, the saw will be somewhat unstable when the user is sawing wood. The user needs to apply pressure when pulling it back and forth to saw the wood, which is extremely cumbersome to use and requires additional pressure from the user. This makes the operation time-consuming and laborious. Therefore, it is necessary to improve the existing technology. Utility Model Content

[0003] (a) Technical problems that need to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a hand saw with a reasonable design. It can be equipped with counterweights as needed, which helps to avoid the problem of the saw bouncing and being unable to saw effectively when actually sawing wood. It is easier and simpler to operate and more practical.

[0005] (ii) Technical solutions to be adopted

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A hand saw includes a saw bow and a saw blade mounted on the saw bow. The saw bow includes a bow body one and a bow body two, which are connected by a detachable counterweight structure. One end of the saw blade is connected to one end of the bow body one, and a movable wrench is provided on one end of the bow body two. The movable wrench is detachably connected to the other end of the saw blade. When the movable wrench is rotated to a state where the movable wrench is disengaged from the other end of the saw blade, the detachable counterweight structure can be detached from the bow body one and the bow body two, or the detachable counterweight structure can connect the bow body one and the bow body two together.

[0008] Preferably, the detachable counterweight structure includes a fixing sleeve and a mounting groove disposed on the first bow body and the second bow body, the fixing sleeve containing a counterweight block, and the fixing sleeve and the mounting groove being clearance fit.

[0009] Preferably, the outer surface of the fixing sleeve is provided with a partition protrusion.

[0010] Preferably, a pad is provided on the first or second bow body, and the pad can slide back and forth on the first or second bow body.

[0011] Preferably, a hand guard is provided on one end of the second bow body. The hand guard includes a loop fitted on the second bow body and a hand guard frame provided on the loop. The hand guard frame and the second bow body form a closed loop.

[0012] Preferably, the snare and the hand guard are integrally formed.

[0013] Preferably, two snares are used, and the two snares are connected as one unit by the hand guard, and the hand guard and the bow body form a closed loop.

[0014] Preferably, the adjustable wrench includes a handle movably disposed on one end of the bow body two, a fixed seat connected to the handle via a movable shaft, and a fixed hole provided on the saw blade. The fixed seat is provided with a locking pin for engaging in the fixed hole to connect the saw blade to the handle.

[0015] Preferably, the handle is provided with anti-slip raised dots.

[0016] Preferably, the fixing base includes a fixing plate one and a fixing plate two disposed on the movable shaft. The fixing plate one is located on one side of the handle, while the fixing plate two is located on the other side of the handle. The fixing plate one is provided with a locking post for locking in the fixing hole, while the fixing plate two is provided with a notch.

[0017] (III) The technical effects to be achieved

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] Firstly, this utility model saw bow includes a bow body one and a bow body two, which are connected by a detachable counterweight structure. One end of the saw blade is connected to one end of the bow body one, and a movable wrench is provided on one end of the bow body two. The movable wrench is detachably connected to the other end of the saw blade. This structure is more reasonable, and the detachable counterweight structure can be disassembled and installed as needed. After installation, it is more beneficial for users in sawmills, avoiding the inability to saw wood due to excessive lightness (avoiding additional pressure on top of the pulling and pushing forces applied when holding the bow). It makes sawmill operations easier and simpler, more practical, and also facilitates packaging and transportation, reducing the space occupied and packaging costs.

[0020] Secondly, when the adjustable wrench is rotated to the state where the adjustable wrench and the other end of the saw blade are in a loose state, the detachable counterweight structure can be detached from the bow body one and the bow body two, or the detachable counterweight structure can connect the bow body one and the bow body two together. This not only allows users to disassemble and install it, but also makes it easier and more convenient in sawmills, facilitating its widespread promotion and use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is an exploded view of the present invention.

[0023] Figure 3 This is a schematic diagram showing the adjustable wrench of this utility model in the state of being rotated to the side of the saw bow.

[0024] Figure 4 This is a schematic diagram of the present invention rotated to a position away from the saw bow.

[0025] Figure 5 This is a schematic diagram of the fixing sleeve structure of this utility model.

[0026] Figure 6 This is a schematic diagram of the combination of the fixing sleeve and the counterweight block of this utility model.

[0027] Figure 7 This is a partially enlarged schematic diagram of the assembly of the bow body, saw blade, adjustable wrench, and hand guard of this utility model.

[0028] Figure 8 This is a partially enlarged schematic diagram of the assembly of the saw blade, adjustable wrench, and hand guard of this utility model.

[0029] Figure 9 This is a partially enlarged schematic diagram of the bow body, hand guard, and adjustable wrench assembly of this utility model.

[0030] Figure 10 This is a schematic diagram showing the saw blade and adjustable wrench of this utility model.

[0031] In the diagram: 1. Saw bow; 2. Saw blade; 3. Adjustable wrench; 4. Hand guard; 11. Bow body one; 12. Bow body two; 13. Detachable counterweight structure; 14. Pad; 31. Handle; 32. Movable shaft; 33. Fixed base; 34. Fixed hole; 35. Locking post; 41. Ring; 42. Hand guard frame; 131. Fixed sleeve; 132. Mounting groove; 133. Counterweight block; 311. Anti-slip raised and recessed points; 331. Fixed plate one; 332. Fixed plate two; 333. Notch. Detailed Implementation

[0032] In the description of this utility model, it should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to or indirectly connected to the other element.

[0033] In the description of this utility model, it should be noted that the terms "center," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0034] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the present utility model.

[0036] Example 1: See Figures 1 to 10A hand saw includes a saw bow 1 and a saw blade 2 mounted on the saw bow 1. The saw bow 1 includes a bow body 11 and a bow body 2 12, which are connected by a detachable counterweight structure 13. One end of the saw blade 2 is connected to one end of the bow body 11, and a movable wrench 3 is mounted on one end of the bow body 2. The movable wrench 3 is detachably connected to the other end of the saw blade 2. When the movable wrench 3 is rotated to the state where the movable wrench 3 is loosened from the other end of the saw blade 2, the detachable counterweight structure 13 can be detached from the bow body 11 and the bow body 2 12, or the detachable counterweight structure 13 can connect the bow body 11 and the bow body 2 together. When the adjustable wrench 3 is rotated to contact the bow body 12, the saw blade 2 is straightened and tightened, and the saw blade 2 can be used for sawing wood. When the adjustable wrench 3 is rotated to the end away from the bow body 12, the saw blade 2 is in a relaxed state. This facilitates the disassembly of the saw blade 2 and the adjustable wrench 3. Alternatively, the detachable counterweight structure 13 can connect the bow body 11 and the bow body 12 together. Then, when the adjustable wrench 3 is rotated to contact the bow body 12, the saw blade 2 is straightened and tightened.

[0037] Example 2: This can be explained based on Example 1, such as... Figure 2 , Figure 5 and Figure 6 As shown, the detachable counterweight structure 13 includes a fixing sleeve 131 and mounting grooves 132 provided on the first bow body 11 and the second bow body 12. The fixing sleeve 131 contains a counterweight 133. The fixing sleeve 131 and the mounting groove 132 are in clearance fit. This facilitates the installation and removal of the fixing sleeve 131 from the mounting grooves 132 on the first bow body 11 and the second bow body 12. By connecting the counterweight 133 together with the fixing sleeve 131, the weight of the counterweight 133 can be increased, making it easier and more convenient for the user to saw wood, avoiding the need to apply pressure. Furthermore, the outer surface of the fixing sleeve 131 is provided with a separating protrusion, which effectively separates the first bow body 11 and the second bow body 12 when installed, facilitating subsequent disassembly.

[0038] Example 3: This can be described based on Example 1 or Example 2, such as... Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a pad 14 is provided on the bow body 11 or the bow body 2 12. The pad 14 can slide back and forth on the bow body 11 or the bow body 2 12, which not only helps to adjust the position, but also makes it more comfortable to hold (grip) in the hand.

[0039] Example 4: This can be explained based on Example 1, Example 2, or Example 3, such as... Figures 1 to 4 as well as Figures 7 to 10As shown, a hand guard 4 is provided on one end of the bow body 12. The hand guard 4 includes a loop 41 that fits onto the bow body 12 and a hand guard frame 42 set on the loop 41. The hand guard frame 42 and the bow body 12 form a closed loop. When the user holds the bow body 12, the hand guard frame 42 protects the hand. The loop 41 is circular and can only slide back and forth along the bow body 12. Furthermore, the loop 41 and the hand guard frame 42 are integrally formed, greatly improving the structural strength. In this embodiment, two loops 41 are used, and the two loops 41 are connected as one piece by the hand guard frame 42. The hand guard frame 42 and the bow body 12 form a closed loop. This arrangement is reasonable and makes it safer to hold the bow body 12.

[0040] Example 5: This can be described based on Example 1, Example 2, Example 3, or Example 4, such as... Figures 1 to 4 as well as Figures 7 to 10 As shown, the adjustable wrench 3 includes a handle 31 movably mounted on one end of the bow body 12. A fixed seat 33 is connected to the handle 31 via a movable shaft 32, and a fixed hole 34 is provided on the saw blade 2. The fixed seat 33 is provided with a locking pin 35 for locking in the fixed hole 34 to connect the saw blade 2 and the handle 31 together. In use, when the locking pin 35 of the fixed seat 33 is locked in the fixed hole 34 of the saw blade 2, and the handle 31 rotates towards the bow body 12 with the movable shaft 32 as the pivot point, the saw blade 2 is fastened to the bow body 11 and the bow body 2 12. When the handle 31 rotates away from the bow body 12 with the movable shaft 32 as the pivot point, the locking pin 35 of the fixed seat 33 is disengaged from the fixed hole 34 of the saw blade 2. This facilitates the separation of the saw blade 2 from the fixed seat 33, which is beneficial for the disassembly and installation of the bow body 11 and the bow body 2 12 and the detachable counterweight structure 13. It is also beneficial for separate packaging and transportation, reducing transportation and packaging costs. To further explain, the handle 31 is connected to the bow body 12 via a pivot, facilitating the back-and-forth rotation of the handle 31. Furthermore, the handle 31 is equipped with anti-slip raised dots 311, which enhances the grip for a more secure hold. Finally, it should be noted that one end of the bow body 11 is connected to one end of the saw blade 2 via rivets, which facilitates production and assembly, reducing costs.

[0041] like Figures 1 to 4 as well as Figures 7 to 10As shown, the fixed base 33 includes a first fixed plate 331 and a second fixed plate 332 mounted on the movable shaft 32. The first fixed plate 331 is located on one side of the handle 31, while the second fixed plate 332 is located on the other side of the handle 31. The first fixed plate 331 is provided with a locking post 35 for locking into the fixing hole 34, while the second fixed plate 332 is provided with a notch 333. In use, when the locking post 35 on the first fixed plate 331 is inserted into the fixing hole 34, the locking post 35 enters from the notch 333 on the second fixed plate 332. This helps to lock the saw blade 2 and the fixed base 33 together. When the post 35 is removed from the notch 333 on the second fixed plate 332, and then removed from the fixing hole 34 on the first fixed plate 331, it is convenient to disassemble the saw blade 2 and the fixed base 33. This facilitates the back-and-forth rotation of the handle 31. Finally, the detachable counterweight structure 13 between the bow body 11 and the bow body 2 can be disassembled and installed. To further explain, there are two fixing holes 34 on the saw blade 2, which facilitates implementation.

[0042] All standard parts used in this application can be purchased from the market, and the specific connection methods of each part adopt conventional methods such as bolts and rivets that are mature in the existing technology, which will not be described in detail here.

[0043] It should be noted that although the above embodiments have been described herein, this does not limit the scope of patent protection for this utility model. Therefore, any changes and modifications made to the embodiments described herein based on the innovative concept of this utility model, or equivalent structural or procedural transformations made using the content of this utility model's specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields, are all included within the scope of protection of this utility model patent.

Claims

1. A hand saw, comprising a saw bow (1) and a saw blade (2) disposed on the saw bow (1), characterized in that: The saw bow (1) includes a bow body one (11) and a bow body two (12). The bow body one (11) and the bow body two (12) are connected by a detachable counterweight structure (13). One end of the bow body one (11) is connected to one end of the saw blade (2). One end of the bow body two (12) is provided with a movable wrench (3). The movable wrench (3) is detachably connected to the other end of the saw blade (2). When the movable wrench (3) is rotated to the state where the movable wrench (3) and the other end of the saw blade (2) are in a loose state, the detachable counterweight structure (13) can be detached from the bow body one (11) and the bow body two (12) or the detachable counterweight structure (13) can connect the bow body one (11) and the bow body two (12) together.

2. The hand saw as described in claim 1, characterized in that: The detachable counterweight structure (13) includes a fixed sleeve (131) and a mounting groove (132) provided on the first bow body (11) and the second bow body (12). The fixed sleeve (131) contains a counterweight block (133), and the fixed sleeve (131) and the mounting groove (132) are in clearance fit.

3. The hand saw as described in claim 2, characterized in that: The outer surface of the fixing sleeve (131) is provided with a partition protrusion.

4. The hand saw as described in claim 1, 2, or 3, characterized in that: A pad (14) is provided on the first bow body (11) or the second bow body (12), and the pad (14) can slide back and forth on the first bow body (11) or the second bow body (12).

5. The hand saw as described in claim 1, 2, or 3, characterized in that: A hand guard (4) is provided on one end of the second bow body (12). The hand guard (4) includes a loop (41) fitted on the second bow body (12) and a hand guard frame (42) set on the loop (41). The hand guard frame (42) and the second bow body (12) form a closed loop.

6. The hand saw as described in claim 5, characterized in that: The snare (41) and the hand guard (42) are integrally formed.

7. The hand saw as described in claim 6, characterized in that: Two snares (41) are used, and the two snares (41) are connected as one unit by the hand guard (42), and the hand guard (42) and the bow body (12) form a closed loop.

8. The hand saw as described in claim 1, 2, 3, 6, or 7, characterized in that: The movable wrench (3) includes a handle (31) movably mounted on one end of the bow body (12), a fixed seat (33) connected to the handle (31) via a movable shaft (32), and a fixed hole (34) provided on the saw blade (2). The fixed seat (33) is provided with a locking pin (35) for locking in the fixed hole (34) to connect the saw blade (2) with the handle (31).

9. The hand saw as described in claim 8, characterized in that: The handle (31) is provided with anti-slip raised dots (311).

10. The hand saw as described in claim 8, characterized in that: The fixing base (33) includes a fixing plate one (331) and a fixing plate two (332) disposed on the movable shaft (32). The fixing plate one (331) is located on one side of the handle (31), while the fixing plate two (332) is located on the other side of the handle (31). The fixing plate one (331) is provided with a locking post (35) for locking in the fixing hole (34), while the fixing plate two (332) is provided with a notch (333).

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