A folding saw

Abstract

This utility model provides a folding saw, including a saw frame and a saw blade mounted on the saw frame. The saw frame includes a foldable saw stand and a handle connected to one end of the saw stand. The saw blade is connected to the saw stand and the handle at both ends, respectively. The saw stand has a storage groove for embedding the saw blade, and the saw frame also has a saw frame shaping structure. The folding saw's saw frame consists of a foldable saw stand and a handle. The saw stand has a storage groove for embedding the saw blade. When not in use, the saw blade can be retracted into the saw stand and then inserted into the handle along with the saw frame. Through multiple overlaps, the size after folding is significantly reduced, greatly facilitating carrying and storage, and solving the problem of the large overall size of traditional folding saws after folding.

Description

Technical Field

[0001] This utility model relates to a cutting tool, and more specifically, to a folding saw. Background Technology

[0002] Saws with bows, due to their curved shape, occupy a large amount of space, making them inconvenient to carry and store. To address this, some suppliers have introduced folding saws. In most existing folding saws, the saw blade is detachable, and the saw frame is foldable. After removing the saw blade, the saw frame folds and secures the blade. However, storing the saw blade and saw frame separately requires individual storage space, resulting in a large overall size when folded. To address this issue, some suppliers have continued to improve the design. For example, invention patent CN103567541A discloses a multi-form folding saw. The saw blade is connected to the bow frame via bow arms at both ends. The lower end of the bow arms is pivotally connected to the saw blade, and the upper end of each bow arm is connected to the bow frame in multiple forms via a bow arm locking / unlocking device. This invention allows the bow to have multiple forms by adjusting the position of the bow arms on the bow frame, solving the technical problem of existing manual saws being unable to achieve multiple forms and thus only able to maintain a fixed form, making them unusable in many situations. In this invention, only the bow arm that is angled to the saw blade is most suitable as a handle when using a folding saw. However, since the bow arm needs to be retracted into the saw bow when folding, its thickness should not be too large, which would affect the user experience. Utility Model Content

[0003] Existing folding saws either have a large overall size after folding, or the pursuit of a smaller size after folding affects the performance. To overcome these shortcomings, this utility model provides a folding saw that can reduce the overall size after folding while being convenient and practical.

[0004] The technical solution of this utility model is: a folding saw, including a saw frame and a saw blade mounted on the saw frame. The saw frame includes a foldable saw frame part and a handle part connected to one end of the saw frame part. The two ends of the saw blade are respectively connected to the saw frame part and the handle part. The saw frame part is provided with a storage groove for embedding the saw blade, and the saw frame is also provided with a saw frame shaping structure. The saw frame of the folding saw is composed of a foldable saw frame part and a handle part, and the saw frame part is provided with a storage groove for embedding the saw blade. When not in use, the saw blade can be hidden in the saw frame part and then inserted into the handle part along with the saw frame. Through multiple overlaps, the size after folding is significantly reduced, which greatly facilitates carrying and storage, and solves the problem of the large overall size of traditional folding saws after folding.

[0005] Preferably, the handle section includes a cavity for inserting the saw frame and a telescopic track, with the end of the saw frame slidably connected to the telescopic track. This cavity further reduces the folding saw's volume when folded, making it more convenient to carry. Simultaneously, the telescopic track allows for smooth and stable operation during unfolding and folding, facilitating quick tool preparation and efficient storage after use, thus improving efficiency. The handle provides storage space when folded and serves as the force-applying part connected to the saw blade when unfolded. This design conforms to ergonomic principles, is compact, and more convenient to use, avoiding the drawbacks of existing technologies that compromise performance by prioritizing size reduction after folding.

[0006] Preferably, the saw frame is equipped with a pin at one end, and the telescopic track has a groove, with the pin passing through the groove. The pin at the end of the saw frame, passing through the groove of the telescopic track, provides guidance for the saw frame during extension and retraction, ensuring that the saw frame slides along a predetermined trajectory. Simultaneously, the pin acts as a pivot when the saw frame is pulled out to the end of the groove, thus ensuring the stability of the saw frame in both unfolded and folded states, thereby improving the reliability and durability of the entire folding saw.

[0007] Preferably, the saw bow shaping structure includes a saw blade connecting rod, which is fixed to the handle portion, and the saw blade and the saw blade connecting rod are connected by fasteners. Fixing the saw blade connecting rod to the handle portion keeps one corner of the quadrilateral formed by the saw frame portion, the handle portion, and the saw blade fixed, thereby keeping the entire quadrilateral fixed and achieving overall saw bow shaping.

[0008] Preferably, the handle end is provided with at least two fixed shafts, which pass through the saw blade connecting rod. The presence of at least two fixed shafts through the saw blade connecting rod releases its rotation function, thus fixing the saw blade connecting rod to the handle and ensuring the stability of the saw bow structure.

[0009] Alternatively, the saw bow shaping structure includes a diagonal brace, one end of which is connected to the connection between the saw blade and the saw frame, and the other end of which is connected to the connection between the saw frame and the handle. When the saw bow is unfolded for use, the diagonal brace divides the quadrilateral formed by the saw frame, handle, and saw blade into two triangles, creating a stable mechanical structure that effectively enhances the rigidity of the saw bow and prevents deformation of the saw bow due to stress during cutting.

[0010] Preferably, the saw frame includes at least two saw frame segments hinged together. The saw frame, composed of at least two hinged segments, allows for greater flexibility when folded, further reducing its space requirements after folding. This design also increases the adaptability of the saw frame in different usage scenarios, allowing its shape and length to be adjusted according to actual cutting needs, thus improving the practicality of the folding saw.

[0011] Preferably, the storage slot opens at the outer edge of the saw frame. This opening makes inserting or removing the saw blade into the storage slot more convenient and quick, and the operation is simple and intuitive. Furthermore, the outer edge opening allows for observation of the fit between the saw blade and the storage slot during storage and removal, ensuring accurate insertion and minimizing the risk of accidental damage.

[0012] Alternatively, the storage slot opens onto the inner edge of the saw frame. This opening allows the saw blade to be more concealed when stored, effectively preventing damage from accidental contact during transport and providing better protection. Simultaneously, this design helps to make the overall structure of the folding saw more compact, further reducing its folded size and improving portability.

[0013] Preferably, the handle is fitted with a rubber sleeve. This sleeve reduces discomfort and significantly improves user comfort when holding the handle, reducing hand pressure and fatigue during prolonged use.

[0014] The beneficial effects of this utility model are:

[0015] When folded, the overall size is smaller, making it convenient to carry and store. When not in use, the saw blade can be hidden in the storage groove of the saw frame part of the saw bow, and then inserted into the cavity of the saw frame part of the saw bow handle together with the saw bow. The saw blade and the saw bow overlap multiple times, thereby reducing the size after folding, making it convenient to carry and store.

[0016] Easy to use. In this utility model, the handle provides storage space when the folding saw is folded, and also serves as the force-applying part connected to the saw blade when the folding saw is unfolded. The structure is compact and more in line with ergonomic principles, making it more convenient to use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of one unfolded state of the present invention.

[0018] Figure 2 This is a schematic diagram of one structure of the present utility model.

[0019] Figure 3 This is a schematic diagram of a disassembled structure of the present invention.

[0020] Figure 4This is a schematic diagram of a disassembled structure of the handle part in this utility model.

[0021] Figure 5 This is a schematic diagram of the structure of this utility model after removing the outer shell of the handle part.

[0022] Figure 6 This is a schematic diagram of one folded state of the present invention.

[0023] In the diagram, 1-saw bow, 101-saw frame, 1011-storage slot, 1012-pin, 1013-saw frame segment, 102-handle, 1021-saw frame cavity, 1022-telescopic track, 10221-slide groove, 1023-rubber sleeve, 1024-fixed shaft, 1025-outer shell, 103-saw blade connecting rod, 2-saw blade. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] Example 1:

[0026] like Figures 1 to 6 As shown, a folding saw includes a saw frame 1 and a saw blade 2, with the saw blade 2 mounted on the saw frame 1. The saw frame 1 includes a saw holder section 101 and a handle section 102. The saw holder section 101 includes two saw holder segments 1013, namely a first saw holder segment and a second saw holder segment, which are hinged together by a pivot, allowing the saw holder section 101 to be folded. Each saw holder segment 1013 is made of lightweight, high-strength aluminum alloy, ensuring the strength of the saw holder section 101 while reducing the overall weight for easy carrying. The handle section 102 is located at one end of the saw holder section 101 and is connected to the second saw holder segment. One end of the saw blade 2 is hinged to the beginning of the first saw frame segment of the saw frame 101, which is also the beginning of the saw frame 101 and one end of the entire saw bow 1, via bolts and matching nuts. The other end of the saw blade 2 is connected to the end of the handle 102, which is also the other end of the entire saw bow 1. Thus, the saw frame 101, handle 102, and saw blade 2 form a closed quadrilateral. The cross-section of the saw frame segment 1013 is U-shaped, with the U-shaped opening located at the outer edge of the saw frame segment 1013. A storage groove 1011 is formed on the saw frame 101, which can accommodate the saw blade 2. The handle 102 includes a telescopic rail 1022 and a housing 1025. The housing 1025 is injection molded from ABS plastic, and its cross-section is approximately rectangular. The four corners of the housing 1025 have rounded chamfers. The outer casing 1025 has a saw frame cavity 1021 that can accommodate the saw frame 101. The telescopic track 1022 is inserted into the saw frame cavity 1021 and has a slight interference fit with the saw frame cavity 1021.

[0027] At the end of the second saw frame segment, which is also the end of the entire saw frame part 101, a pin 1012 is provided, which passes through the second saw frame segment. The telescopic track 1022 is made of bent steel sheet, and the cross-section of the telescopic track 1022 is U-shaped. There are grooves 10221 on two opposite sides. The pin 1012 passes through the grooves 10221, so that the end of the saw frame part 101 is slidably connected to the telescopic track 1022. The saw bow 1 is also provided with a saw bow shaping structure, which includes a saw blade connecting rod 103 and two parallel fixed shafts 1024. The saw blade connecting rod 103 and the fixed shafts 1024 are both located inside the end of the handle part 102. The two fixed shafts 1024 radially pass through the saw blade connecting rod 103, so that the saw blade connecting rod 103 is fixed to the handle part 102. The end of the saw blade connecting rod 103 protrudes from the handle portion 102. This protruding end is equipped with a fastener consisting of a bolt and a mating threaded cap. After the bolt is inserted into the mounting hole at the end of the saw blade 2, the threaded cap is tightened to connect the saw blade 2 to the saw blade connecting rod 103. The outer shell 1025 of the handle portion 102 is also covered with a rubber sleeve 1023 by a rubber injection molding method. The surface of the rubber sleeve 1023 is designed with anti-slip texture to provide a comfortable grip during use and prevent the sawing operation from being affected by slippage.

[0028] After using the folding saw, loosen and remove the threaded cap on the exposed end of the saw blade connecting rod 103, and release the end of the saw blade 2 that was originally connected to the saw blade connecting rod 103; then, taking the connection point between the saw blade 2 and the beginning of the saw frame 101 as the origin of rotation, flip the saw blade 2 towards the back side of the saw bow 1, that is, the outer edge of the saw frame 101, so that the saw teeth side of the saw blade 2 faces the opening of the storage slot 1011 and is inserted into the storage slot 1011; then, flip the saw frame 101 and adjust the angle between the saw frame 101 and the handle 102 until the saw frame 101 and the handle 102 are in a straight line; push the saw frame 101 along the telescopic track 1022 into the saw frame cavity 1021 of the handle 102. After the saw frame 101 retracts into the handle 102 a certain distance, the entire folding process is completed. At this time, the overall size of the folding saw is greatly reduced, making it easy to put into a backpack or other storage space for easy carrying. When this folding saw is needed, first pull the saw frame 101 out of the saw frame cavity 1021 of the handle 102. Since the pin 1012 slides in the slide groove 10221, the saw frame 101 can extend smoothly. After the saw frame 101 is fully pulled out of the handle 102, the saw frame 101 can rotate around the pin 1012 and form an angle with the handle 102. With the connection point between the saw blade 2 and the beginning of the saw frame 101 as the origin of rotation, flip the saw blade 2 out of the storage groove 1011. Connect the free end of the saw blade 2 to the saw blade connecting rod to form a stable folding saw.

[0029] Example 2:

[0030] A folding saw includes a saw frame 1 and a saw blade 2, with the saw blade 2 mounted on the saw frame 1. The saw frame 1 includes a saw holder section 101 and a handle section 102. The saw holder section 101 includes two saw holder segments 1013, namely a first saw holder segment and a second saw holder segment, which are hinged together by a pivot, allowing the saw holder section 101 to be folded. Each saw holder segment 1013 is made of lightweight, high-strength aluminum alloy, ensuring the strength of the saw holder section 101 while reducing the overall weight for easy carrying. The handle section 102 is located at one end of the saw holder section 101 and is connected to the second saw holder segment. One end of the saw blade 2 is hinged to the beginning of the first saw frame segment of the saw frame 101, which is also the beginning of the saw frame 101 and one end of the entire saw bow 1, via bolts and matching nuts. The other end of the saw blade 2 is connected to the end of the handle 102, which is also the other end of the entire saw bow 1. Thus, the saw frame 101, handle 102, and saw blade 2 form a closed quadrilateral. The cross-section of the saw frame segment 1013 is U-shaped, with the U-shaped opening located at the outer edge of the saw frame segment 1013. A storage groove 1011 is formed on the saw frame 101, which can accommodate the saw blade 2. The handle 102 includes a telescopic rail 1022 and a housing 1025. The housing 1025 is injection molded from ABS plastic, and its cross-section is approximately rectangular. The four corners of the housing 1025 have rounded chamfers. The outer casing 1025 has a saw frame cavity 1021 that can accommodate the saw frame 101. The telescopic track 1022 is inserted into the saw frame cavity 1021 and has a slight interference fit with the saw frame cavity 1021.

[0031] At the end of the second saw frame segment, which is also the end of the entire saw frame part 101, a pin 1012 is provided, which passes through the second saw frame segment. The telescopic track 1022 is made of bent steel sheet, and the cross-section of the telescopic track 1022 is U-shaped. There are grooves 10221 on two opposite sides, and the pin 1012 passes through the grooves 10221, so that the end of the saw frame part 101 is slidably connected to the telescopic track 1022. The saw bow 1 is also provided with a saw bow shaping structure. Unlike the embodiment, in this embodiment, the saw bow shaping structure includes a diagonal brace. One end of the diagonal brace is connected to the connection between the saw blade 2 and the saw frame part 101, and shares a bolt and a matching nut with the saw blade 2. The other end of the diagonal brace is connected to the connection between the saw frame part 101 and the handle part 102, and shares a pin 1012 with the saw frame part 101. The diagonal brace is made of steel plate to control its thickness, facilitating its smooth insertion into the saw frame cavity 1021 along with the saw frame 101. Inside the end of the handle 102, there is also a saw blade connecting rod 103 and a fixed shaft 1024. The fixed shaft 1024 radially penetrates the saw blade connecting rod 103, allowing the saw blade connecting rod 103 to be rotatably connected to the handle 102. The end of the saw blade connecting rod 103 protrudes from the handle 102, and this protruding end is equipped with a fastener consisting of a bolt and a mating threaded cap. After the bolt passes through the mounting hole at the end of the saw blade 2, the threaded cap is tightened to connect the saw blade 2 to the saw blade connecting rod 103. The outer shell 1025 of the handle 102 is also covered with a rubber sleeve 1023 by injection molding. The surface of the rubber sleeve 1023 is designed with an anti-slip texture, providing a comfortable grip during use and preventing slippage from affecting the sawing operation. The rest is the same as in Embodiment 1.

[0032] After using this folding saw, loosen and remove the threaded cap on the exposed end of the saw blade connecting rod 103, releasing the end of the saw blade 2 that was originally connected to the saw blade connecting rod 103; then, using the connection point between the saw blade 2 and the beginning of the saw frame 101 as the origin of rotation, flip the saw blade 2 towards the back side of the saw bow 1, that is, the outer edge of the saw frame 101, so that the saw teeth side of the saw blade 2 faces the opening of the storage groove 1011 and is inserted into the storage groove 1011; at the same time, loosen the bolts and nuts at the beginning of the first saw frame segment of the saw frame 101, releasing the end of the diagonal brace connected there, and then Retighten the bolts and nuts; then, flip the saw frame 101 and the diagonal brace, and adjust the angle between the saw frame 101, the diagonal brace and the handle 102 until the saw frame 101, the diagonal brace and the handle 102 are in a straight line; push the saw frame 101 and the diagonal brace along the telescopic track 1022 into the saw frame cavity 1021 of the handle 102. After the saw frame 101 and the diagonal brace retract into the handle 102 a certain distance, the folding process is completed. At this time, the overall size of the folding saw is greatly reduced, making it easy to put into a backpack or other storage space for easy carrying. When this folding saw is needed, first pull the saw frame 101 and the diagonal support rod out of the saw frame cavity 1021 of the handle 102. Since the pin 1012 slides in the slide groove 10221, the saw frame 101 and the diagonal support rod can extend smoothly. After the saw frame 101 and the diagonal support rod are fully pulled out of the handle 102, the saw frame 101 can rotate around the pin 1012 and form an angle with the handle 102. With the connection point between the saw blade 2 and the beginning of the saw frame 101 as the origin of rotation, flip the saw blade 2 out of the storage groove 1011. Connect the free end of the saw blade 2 to the saw blade connecting rod, and reconnect the diagonal support rod to the beginning of the first saw frame segment of the saw frame 101 to form a stable folding saw.

[0033] Example 3:

[0034] A folding saw includes a saw frame 1 and a saw blade 2, with the saw blade 2 mounted on the saw frame 1. The saw frame 1 includes a saw holder section 101 and a handle section 102. Unlike Embodiment 1, in this embodiment, the saw holder section 101 includes three saw holder segments 1013, namely a first saw holder segment, a second saw holder segment, and a third saw holder segment, which are hinged together by pivots, allowing the saw holder section 101 to be folded. Each saw holder segment 1013 is made of lightweight, high-strength aluminum alloy, ensuring the strength of the saw holder section 101 while reducing the overall weight for easy carrying. The handle section 102 is located at one end of the saw holder section 101 and is connected to the third saw holder segment. One end of the saw blade 2 is hinged to the beginning of the first saw frame segment of the saw frame 101, which is also the beginning of the saw frame 101 and one end of the entire saw bow 1, via bolts and matching nuts. The other end of the saw blade 2 is connected to the end of the handle 102, which is also the other end of the entire saw bow 1. Thus, the saw frame 101, handle 102, and saw blade 2 form a closed pentagon. The cross-section of the saw frame segment 1013 is U-shaped. Unlike embodiment 1, in this embodiment, the U-shaped opening is located on the inner edge of the saw frame segment 1013, forming a storage groove 1011 on the saw frame 101, which can accommodate the saw blade 2. The handle 102 includes a telescopic rail 1022 and a housing 1025. The housing 1025 is injection molded from ABS plastic, and its cross-section is approximately rectangular. The four corners of the housing 1025 have rounded chamfers. The outer casing 1025 has a saw frame cavity 1021 that can accommodate the saw frame 101. The telescopic track 1022 is inserted into the saw frame cavity 1021 and has a slight interference fit with the saw frame cavity 1021.

[0035] At the end of the third saw frame segment, which is also the end of the entire saw frame part 101, a pin 1012 is provided, which is connected to the third saw frame segment. The telescopic track 1022 is made of bent steel sheet, and the cross-section of the telescopic track 1022 is U-shaped. There are grooves 10221 on two opposite sides. The pin 1012 is connected in the grooves 10221, so that the end of the saw frame part 101 is slidably connected to the telescopic track 1022. The saw bow 1 is also provided with a saw bow shaping structure, which includes a saw blade connecting rod 103 and two parallel fixed shafts 1024. The saw blade connecting rod 103 and the fixed shafts 1024 are both located inside the end of the handle part 102. The two fixed shafts 1024 radially penetrate the saw blade connecting rod 103, so that the saw blade connecting rod 103 is fixed to the handle part 102. The end of the saw blade connecting rod 103 protrudes from the handle portion 102. This protruding end is equipped with a fastener consisting of a bolt and a mating threaded cap. After the bolt passes through the mounting hole at the end of the saw blade 2, the threaded cap is tightened to connect the saw blade 2 to the saw blade connecting rod 103. The outer shell 1025 of the handle portion 102 is also covered with a rubber sleeve 1023 by injection molding. The surface of the rubber sleeve 1023 is designed with an anti-slip texture to provide a comfortable grip during use and prevent slippage from affecting sawing operations. The rest is the same as in Embodiment 1.

[0036] After using the folding saw, loosen and remove the threaded cap on the exposed end of the saw blade connecting rod 103, releasing the end of the saw blade 2 that was originally connected to the saw blade connecting rod 103; then, taking the connection point between the saw blade 2 and the beginning of the saw frame 101 as the origin of rotation, flip the saw blade 2 towards the inside of the saw bow 1, that is, the inner edge of the saw frame 101, so that the back side of the saw blade 2 faces the opening of the storage slot 1011 and is inserted into the storage slot 1011; then, flip the saw frame 101 and adjust the angle between the saw frame 101 and the handle 102 until the saw frame 101 and the handle 102 are in a straight line; push the saw frame 101 along the telescopic track 1022 into the saw frame cavity 1021 of the handle 102. After the saw frame 101 retracts into the handle 102 a certain distance, the entire folding process is completed. At this time, the overall size of the folding saw is greatly reduced, making it easy to put into a backpack or other storage space for easy carrying. When this folding saw is needed, first pull the saw frame 101 out of the saw frame cavity 1021 of the handle 102. Since the pin 1012 slides in the slide groove 10221, the saw frame 101 can extend smoothly. After the saw frame 101 is fully pulled out of the handle 102, the saw frame 101 can rotate around the pin 1012 and form an angle with the handle 102. With the connection point between the saw blade 2 and the beginning of the saw frame 101 as the origin of rotation, flip the saw blade 2 out of the storage groove 1011. Connect the free end of the saw blade 2 to the saw blade connecting rod to form a stable folding saw.

Claims

1. A folding saw, comprising a saw bow (1) and a saw blade (2) mounted on the saw bow (1), characterized in that, The saw bow (1) includes a foldable saw frame part (101) and a handle part (102) connected to one end of the saw frame part (101). The two ends of the saw blade (2) are connected to the saw frame part (101) and the handle part (102) respectively. The saw frame part (101) is provided with a storage groove (1011) for inserting the saw blade (2). The saw bow (1) is also provided with a saw bow shaping structure. The handle part (102) is provided with a saw frame part cavity (1021) for inserting the saw frame part (101) and a telescopic track (1022). The end of the saw frame part (101) is slidably connected to the telescopic track (1022). The end of the saw frame part (101) is provided with a pin (1012). The telescopic track (1022) has a groove (10221). The pin (1012) passes through the groove (10221).

2. The folding saw according to claim 1, characterized in that, The saw bow shaping structure includes a saw blade connecting rod (103), which is fixed to the handle part (102), and the saw blade (2) is connected to the saw blade connecting rod (103) by fasteners.

3. The folding saw according to claim 2, characterized in that, The handle part (102) has at least two fixed shafts (1024) at its end, and the fixed shafts (1024) pass through the saw blade connecting rod (103).

4. The folding saw according to claim 1, characterized in that, The saw bow shaping structure includes a diagonal brace, one end of which is connected to the connection between the saw blade (2) and the saw frame (101), and the other end of which is connected to the connection between the saw frame (101) and the handle (102).

5. The folding saw according to claim 1, characterized in that, The saw frame part (101) includes at least two saw frame segments (1013) that are hinged together.

6. The folding saw according to claim 1, characterized in that, The storage slot (1011) opens at the outer edge of the saw frame part (101).

7. The folding saw according to claim 1, characterized in that, The storage slot (1011) opens at the inner edge of the saw frame part (101).

8. The folding saw according to any one of claims 1 to 7, characterized in that, A rubber sleeve (1023) is provided on the outside of the handle part (102).

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