A wood chisel

Abstract

The utility model provides a wood chisel belongs to woodworking tool technical field, including chisel body and plastic handle, the plastic handle is wrapped in the chisel body top, the chisel body top is provided with detachable head, detachable head is located in the plastic handle top, when working, holds the plastic handle and hammers the top of detachable head can make the chisel blade mouth chisel into the wood. The utility model discloses through setting detachable head, detachable head installs in the plastic handle top and is connected with chisel body, when hammering, directly hammering detachable head top can, when needing to replace after long -time use, the detachable head is taken off from the plastic handle top and is replaced to continue using after, on one hand avoided the condition of the wooden handle cracking easily to happen, on the other hand can replace detachable head, guarantee the normal use of wood chisel and prolong the service life of whole wood chisel.

Description

Technical Field

[0001] This utility model relates to the field of woodworking tools, and in particular to a woodworking chisel. Background Technology

[0002] A wood chisel is one of the basic tools used by woodworkers. The plastic handles of wood chisels are mainly made of wood or plastic. When using it, hold the plastic handle of the wood chisel and strike the top of the plastic handle with a hammer or axe to drive the cutting edge of the wood into the wood, thereby performing operations such as grooving, hollowing out and trimming the wood.

[0003] When using a common woodworking chisel, one hand holds the plastic handle, while the other hand holds a hammer or axe to strike the top of the plastic handle, causing the chisel's cutting edge to penetrate the wood and process it. However, with increased use and repeated strikes, the top of the wooden plastic handle is prone to cracking after multiple hammer blows, which can severely damage the entire wooden plastic handle. Although the plastic handle has a metal hammerhead, this hammerhead can also deform or be damaged after repeated hammer blows. Metal hammerheads are usually difficult to replace, and when the metal hammerhead is damaged, the entire woodworking chisel becomes unusable. Therefore, this application provides a woodworking chisel to meet this need. Summary of the Invention

[0004] This utility model provides a woodworking chisel to solve the problem that the top of the wooden plastic handle of the woodworking chisel is prone to cracking after long-term use, and in severe cases, the entire plastic handle will be damaged. The metal hammer head at the top of the plastic handle of the woodworking chisel will deform and be damaged after repeated hammering, and the metal hammer head is usually difficult to replace. When the metal hammer head is damaged, the entire woodworking chisel will become unusable.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A woodworking chisel includes a chisel body and a plastic handle. The plastic handle is wrapped around the top of the chisel body, and a detachable tip is provided on the top of the chisel body. The detachable tip is located on the top of the plastic handle. When working, the chisel body can be driven into the wood by holding the plastic handle and striking the top of the detachable tip.

[0007] Preferably, the detachable top head includes a connecting plate fixed to the top of the chisel body, the connecting plate is fixed to the top of the plastic handle, and a number of positioning blocks are fixed to the top of the connecting plate. An insert block is attached to the top of the connecting plate. Pin holes are opened on the sides of the insert block and the positioning block. Positioning pins are inserted into the pin holes. The top of the insert block is fixed to the top of the top head body.

[0008] Preferably, the positioning block has a first inclined surface on its side, and the insertion block has a second inclined surface on its side, with the first inclined surface and the second inclined surface fitting together.

[0009] Preferably, the insert has a side extension that slides on the side of the positioning block.

[0010] Preferably, the top of the connecting plate has a notch one on the side of the positioning block away from the insertion block, and the bottom of the top body has a notch two on the side of the positioning block away from the insertion block.

[0011] Preferably, the top of the top body extends outward to form a top expansion portion, and the diameter of the top expansion portion is larger than the diameter of the top body.

[0012] Preferably, the side of the top expansion portion has a plane corresponding to the position of the second notch, and the top of the inner wall of the second notch is a slope three.

[0013] Preferably, the surface of the plastic handle is provided with anti-slip texture.

[0014] Compared with the prior art, this utility model has at least the following beneficial effects:

[0015] In the above solution, a detachable top end is installed on the top of the plastic handle and connected to the chisel body. When hammering, the top of the detachable top end is directly hammered. When it needs to be replaced after a long period of use, the detachable top end is removed from the top of the plastic handle and replaced, and it can be used again. On the one hand, this avoids the situation where the wooden handle is easily cracked by hammering. On the other hand, the detachable top end can be replaced, ensuring the normal use of the woodworking chisel and extending the service life of the entire woodworking chisel.

[0016] By setting locating pins, which are inserted into the pin holes of the locating block and the insert block, a stable connection between the locating block and the insert block is achieved through an interference fit. When the top head body is struck, the locating pin will not loosen due to vibration. Compared with bolt fixing, the installation of the top head body is more stable and secure by fixing with locating pins.

[0017] By setting inclined plane one and inclined plane two, the inclined plane one of the positioning block fits into the inclined plane two of the insert block. During installation, the two inclined planes increase the opening size at the top of the two positioning blocks, making it easier for the insert block to be inserted between the two positioning blocks. After the positioning pin is inserted into the pin hole of the positioning block and the insert block, when the top body is hammered, the positioning pin will be stressed. When the positioning pin is stressed, the bottom of the positioning pin is still supported by the positioning block when the top of the positioning pin is subjected to the hammering force transmitted by the insert block, thanks to the cooperation of inclined plane one and inclined plane two. This prevents the positioning pin from deforming under stress and ensures that the positioning pin can still be removed from the pin hole when the top body is replaced. This effectively prevents the positioning pin from being misaligned and affecting the replacement of the top body.

[0018] By setting notch one and notch two, the operating space at the positioning block is increased, thus facilitating the connection and fixation of the insert block and the positioning block by hammering the positioning pin.

[0019] By setting a top expansion section, which is located at the top of the mandrel body, the diameter of the mandrel body is increased, thereby increasing the hammer-bearing area at the top of the mandrel body, making it easier for the operator to accurately strike the mandrel body with an axe or hammer.

[0020] By setting a flat surface, which is opened on the side of the top expansion section, when the woodworking chisel is placed on the workbench, the flat surface is in contact with the workbench surface, which can effectively prevent the woodworking chisel from rolling or moving after being touched by external force, thereby effectively preventing the woodworking chisel from falling off the workbench. When disassembling or assembling the positioning pin, the handle and the flat surface are in contact with the workbench surface, thereby preventing the woodworking chisel from rolling at will and affecting the disassembly or assembly of the positioning pin. Attached Figure Description

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

[0022] Figure 2 This is a right sectional view of the positioning pin of this utility model;

[0023] Figure 3 This is a three-dimensional structural diagram of the positioning block of this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the insertion block of this utility model.

[0025] In the diagram: 1. Chisel body; 2. Plastic handle; 3. Detachable mandrel; 4. Connecting plate; 5. Positioning block; 6. Bevel 1; 7. Mandrel body; 8. Insert block; 9. Bevel 2; 10. Side extension; 11. Notch 1; 12. Notch 2; 13. Bevel 3; 14. Top expansion section; 15. Flat surface; 16. Positioning pin.

[0026] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to the specific structure, device and environment. According to specific needs, those skilled in the art can adjust or modify these devices and environments, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0027] The woodworking chisel provided by this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can also use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.

[0028] like Figures 1-4 As shown, an embodiment of this utility model provides a woodworking chisel, including a chisel body 1 and a plastic handle 2. The plastic handle 2 is the same as the plastic handles on existing woodworking chisels. The plastic handle 2 is wrapped around the top of the chisel body 1. A detachable tip 3 is provided on the top of the chisel body 1. The detachable tip 3 is located on the top of the plastic handle 2. The detachable tip 3 is made of metal, which makes it more durable. When working, holding the plastic handle 2 and hammering the top of the detachable tip 3 will allow the cutting edge of the chisel body 1 to chisel into the wood. The detachable tip 3 allows the hammering force to act directly on it, preventing the top of the traditional wooden handle from cracking due to hammering. At the same time, when the detachable tip 3 is damaged, it can be replaced, ensuring the normal use of the woodworking chisel and extending the service life of the entire woodworking chisel.

[0029] like Figures 2-4 As shown in this embodiment, the detachable mandrel 3 includes a connecting plate 4 fixed to the top of the chisel body 1. The connecting plate 4 is fixed to the top of the plastic handle 2, and several positioning blocks 5 are fixed to the top of the connecting plate 4. An insert block 8 is attached to the top of the connecting plate 4. Pin holes are opened on the sides of both the insert block 8 and the positioning block 5. Positioning pins 16 are inserted into the pin holes. There are at least two positioning pins 16, which can prevent relative rotation between the insert block 8 and the positioning block 5. The mandrel body 7 is fixed to the top of the insert block 8. The connecting plate 4 serves to connect the chisel body 1, the plastic handle 2 and the positioning block 5, providing a stable installation base for the detachable mandrel 3. The cooperation of the positioning block 5, the insert block 8 and the positioning pin 16, through the interference fit of the positioning pin 16 inserted into the pin hole, realizes the stable connection between the insert block 8 and the positioning block 5. Even if the mandrel body 7 is subjected to hammering vibration, the positioning pin 16 is not easy to loosen. Compared with bolt fixing, it is more stable and ensures the stable transmission of force.

[0030] like Figure 3 and Figure 4As shown in this embodiment, the side of the positioning block 5 is provided with a first inclined surface 6, and the side of the insertion block 8 is provided with a second inclined surface 9. The first inclined surface 6 and the second inclined surface 9 fit together. When installing the insertion block 8, the first inclined surface 6 on the opposite side of the two positioning blocks 5 can increase the opening size of the top of the two positioning blocks 5, making it easier for the insertion block 8 to be inserted between the two positioning blocks 5. When the top of the positioning pin 16 is subjected to the hammering force transmitted by the insertion block 8, the bottom of the positioning pin 16 corresponding to the force position can still be stably supported by the positioning block 5, thereby preventing the positioning pin 16 from deforming under force and ensuring the stability of the subsequent disassembly of the positioning pin 16.

[0031] like Figure 4 As shown in this embodiment, the side of the insert 8 extends to a side extension 10, which is slidably connected to the side of the positioning block 5. The fit between the side extension 10 and the side of the positioning block 5 increases the contact area between the insert 8 and the positioning block 5, further enhancing the stability of the connection between the two, making the insert 8 less prone to shaking when subjected to force, and ensuring the stability of force transmission.

[0032] like Figures 2-4 As shown in this embodiment, the top of the connecting plate 4 has a notch 11 on the side of the positioning block 5 away from the insertion block 8, and the bottom of the top head body 7 has a notch 12 on the side of the positioning block 5 away from the insertion block 8. When the height of the positioning block 5 is large, the height of the entire detachable top head 3 will increase accordingly. When the height of the detachable top head 3 increases accordingly, the distance between the hammering point and the handle will increase. When the operator holds the plastic handle 2, the impact force generated by the hammering is transmitted from the hammering point to the chisel body 1. Because the lever arm is longer, the plastic handle 2 is prone to slight wobbling, which can easily cause the cutting edge of the chisel body 1 to wobble, thus affecting the processing accuracy of the woodworking chisel. Therefore, the height of the positioning block 5 should not be too high. When the height of the positioning block 5 is low, the design of notch 11 and notch 22 increases the operating space near the positioning block 5 when the positioning pin 16 is hammered into the pin hole, making it easier to use the hammer to hammer the positioning pin 16 to connect the insert 8 and the positioning block 5, thus improving the ease of operation when installing the detachable top head 3.

[0033] like Figure 2 and Figure 4 As shown in this embodiment, the top of the mandrel body 7 extends outward to form a top expansion portion 14. The diameter of the top expansion portion 14 is larger than the diameter of the mandrel body 7. The top expansion portion 14 increases the hammer-bearing area at the top of the mandrel body 7, so that when the operator holds a hammer or axe, he can more accurately strike the mandrel body 7, reduce hammering deviation, and improve chiseling efficiency.

[0034] like Figure 2 and Figure 4As shown in this embodiment, the side of the top expansion portion 14 is provided with a plane 15 corresponding to the position of the second notch 12. The top of the inner wall of the second notch 12 is a slope 3 13. When the top expansion portion 14 is hammered, the slope 3 13 is used to achieve the skewed deformation of the area of ​​the plane 15 corresponding to the top expansion portion 14, thereby improving the structural strength of the top expansion portion 14. When the woodworking chisel is placed on the workbench, the plane 15 can fit with the workbench surface to prevent the woodworking chisel from rolling or falling after being hit by external force. When disassembling and assembling the positioning pin 16, the plastic handle 2 and the plane 15 are fitted with the workbench surface to avoid the woodworking chisel rolling and affecting the operation.

[0035] like Figure 1 As shown in this embodiment, the surface of the plastic handle 2 is provided with anti-slip texture. The anti-slip texture increases the friction between the operator's hand and the plastic handle 2, making the operator's grip more stable and avoiding the impact of hand slippage on the operation accuracy during use. It also reduces the risk of the wood chisel falling off due to slippage.

[0036] Working principle: When in use, the operator holds the plastic handle 2 with anti-slip texture and holds a hammer or axe to strike the top of the top expansion part 14. Because the diameter of the top expansion part 14 is larger than that of the top head body 7, the hammering can be more accurate. The hammering force is transmitted to the chisel body 1 through the top head body 7, the insert block 8, the positioning block 5, and the connecting plate 4, so that the cutting edge of the chisel body 1 can be driven into the wood to complete the processing.

[0037] The positioning block 5 and the insert block 8 are stably connected by the interference fit between the positioning pin 16 and the pin hole. The first inclined surface 6 and the second inclined surface 9 are in contact. When the top of the positioning pin 16 is subjected to the hammering force transmitted by the insert block 8, the bottom of the positioning pin 16 can still be stably supported by the positioning block 5 at the corresponding force position, thereby preventing the positioning pin 16 from deforming under force and ensuring the stability of the subsequent disassembly of the positioning pin 16. The side extension 10 is in contact with the side of the positioning block 5 and is slidably connected, further enhancing the connection stability between the insert block 8 and the positioning block 5.

[0038] When the woodworking chisel is placed on the workbench, the plane 15 of the top expansion part 14 is made to fit against the workbench surface, which can prevent it from rolling or falling and protect the cutting edge of the woodworking chisel.

[0039] After prolonged use, the detachable mandrel 3 may deform or be damaged due to repeated hammering of the top expansion section 14. In this case, the top expansion section 14 needs to be replaced. When replacing it, first place the plastic handle 2 and the flat surface 15 of the top expansion section 14 against the workbench surface to prevent the wood chisel from rolling. Then, align the slender top pin with the smaller diameter with the positioning pin 16 and use a hammer to hammer the top pin to separate the positioning pin 16 from the pin hole. After separation, the old mandrel body 7 and insert block 8 can be removed. Insert the new insert block 8 between the positioning blocks 5. Using the operating space provided by notch 11 and notch 2 12, use a hammer to hammer the positioning pin 16 into the pin hole of the insert block 8 and the positioning block 5 to fix the insert block 8. This completes the replacement of the detachable mandrel 3, and the wood chisel can continue to be used.

[0040] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A woodworking chisel, comprising a chisel body (1) and a plastic handle (2), said plastic handle (2) being wrapped around the top of the chisel body (1), characterized in that, The top of the chisel body (1) is provided with a detachable top head (3). The detachable top head (3) is located on the top of the plastic handle (2). When working, the cutting edge of the chisel body (1) can be driven into the wood by holding the plastic handle (2) and hammering the top of the detachable top head (3).

2. The woodworking chisel according to claim 1, characterized in that, The detachable top head (3) includes a connecting plate (4) fixed to the top of the chisel body (1), the connecting plate (4) is fixed to the top of the plastic handle (2), and several positioning blocks (5) are fixed to the top of the connecting plate (4). An insert block (8) is attached to the top of the connecting plate (4). Pin holes are opened on the sides of the insert block (8) and the positioning block (5), and a positioning pin (16) is inserted into the pin hole. The top of the insert block (8) is fixed to the top of the top head body (7).

3. The woodworking chisel according to claim 2, characterized in that, The positioning block (5) has a first inclined surface (6) on its side, and the insert block (8) has a second inclined surface (9) on its side. The first inclined surface (6) and the second inclined surface (9) are in contact.

4. The woodworking chisel according to claim 2, characterized in that, The insert (8) has a side extension (10) extending from its side, and the side extension (10) is slidably connected to the side of the positioning block (5).

5. The woodworking chisel according to claim 2, characterized in that, The top of the connecting plate (4) has a notch (11) on the side of the positioning block (5) away from the insertion block (8), and the bottom of the top body (7) has a notch (12) on the side of the positioning block (5) away from the insertion block (8).

6. The woodworking chisel according to claim 5, characterized in that, The top of the top body (7) extends outward to form a top expansion portion (14), the diameter of which is larger than the diameter of the top body (7).

7. The woodworking chisel according to claim 6, characterized in that, The top expansion portion (14) has a flat surface (15) on its side corresponding to the position of the second notch (12), and the top of the inner wall of the second notch (12) is a sloping surface (13).

8. The woodworking chisel according to claim 1, characterized in that, The surface of the plastic handle (2) is provided with anti-slip texture.

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