Quick change steel chisel

Abstract

This application discloses a quick-change steel chisel, relating to the field of steel chisel technology. The application includes a chisel head, one end of which is fixed to a support block. A connector post is fixed to the end of the support block away from the chisel head. A handle is provided at the end of the connector post away from the support block. A connecting post is fixed to the end of the handle near the connector post. A connector groove is formed on the connecting post, and the connector post is slidably disposed within the connector groove. A fixing structure is provided between the connector post and the connecting post. This fixing structure allows for quick fixing of the chisel head and handle, and disassembly is relatively convenient, enabling rapid chisel head replacement, significantly improving work efficiency. The connection is also effective, preventing easy loosening or detachment. Furthermore, the operation is simple, requiring no additional tools to replace the chisel head.

Description

Technical Field

[0001] This application relates to the field of steel chisel technology, and in particular to a quick-change steel chisel. Background Technology

[0002] In the field of metalworking, steel chisels are a common hand tool, widely used for chiseling, carving, or cutting metal workpieces. Traditional steel chisels typically feature a one-piece design, with the chisel head fixed to the handle and not replaceable.

[0003] With the diversification of processing needs, users may need chisels of different shapes or materials to adapt to different processing tasks. There are some steel chisel designs with replaceable chisels on the market, but these designs often have problems such as low replacement efficiency, complicated operation, and easy loosening or falling off.

[0004] Existing chisels and handles are mostly connected by threaded or magnetic methods. Threaded connections connect the chisel and handle with threads, but replacement requires rotating the chisel multiple times, which is cumbersome and time-consuming. Furthermore, when the threads wear down during long-term use, tools such as wrenches are needed, which is inconvenient. Magnetic connections fix the chisel and handle with magnetism, making replacement convenient, but the magnetic force is limited and cannot withstand large impacts. Under high-intensity use, the chisel is prone to loosening or falling off. Utility Model Content

[0005] The purpose of this application is to provide a quick-change steel chisel to solve the problems of inconvenient replacement of chisel heads and handles in existing threaded connection methods and easy loosening or falling off in magnetic connection methods.

[0006] To achieve the above objectives, this application specifically adopts the following technical solution: A quick-change steel chisel includes a chisel head, one end of which is fixed with a support block, the end of which, away from the chisel head, is fixed with a plug post, the end of which, away from the support block, is provided with a handle, the end of which, near the plug post, is fixed with a connecting post, the connecting post having a plug groove, the plug post being slidably disposed within the plug groove, and a fixing structure being provided between the plug post and the connecting post.

[0007] By adopting the above technical solution, when connecting the chisel head to the handle, the insertion pin is inserted into the insertion slot, and then fixed by a fixing structure. This fixing structure can quickly fix the chisel head, and it is easy to disassemble and replace different types of chisels.

[0008] Furthermore, the fixing structure includes a fixing column slidably disposed inside the connecting column, one end of the fixing column extending out of the connecting column and fixed with a lifting block, a movable groove being provided inside the connecting column, the fixing column being slidably disposed inside the movable groove, a fixing groove being provided on the plug-in column that is adapted to the fixing column, and the end of the fixing column away from the lifting block slidingly extending into the fixing groove.

[0009] By adopting the above technical solution, after the plug is inserted into the plug slot, the fixing post extends into the fixing slot, thereby achieving quick fixing of the chisel head without the need for other tools. This is convenient, improves the efficiency of chisel head replacement, and provides a more secure fixation.

[0010] Furthermore, a fixing ring is fixed on the fixing column, and a fixing spring is slidably sleeved on the fixing column, with both ends of the fixing spring being fixedly connected to the connecting column and the fixing ring, respectively.

[0011] By adopting the above technical solution, the fixing spring is compressed when the fixing post is pulled. When the fixing post is released, the fixing post is reset and enters the fixing groove under the action of the fixing spring. The fixing post can be fixed by using the fixing spring in conjunction with the fixing post.

[0012] Furthermore, both the ends of the fixing post and the insertion post are arc-shaped.

[0013] By adopting the above technical solution, when inserting the plug into the plug slot, the plug with an arc-shaped end is easier to enter the plug slot, and the fixing plug with an arc-shaped end is easier to enter the fixing slot.

[0014] Furthermore, a positioning groove is provided at the end of the plug-in post away from the support block, a sliding groove is provided at the bottom of the plug-in groove, and a positioning block is provided inside the sliding groove, the positioning block being adapted to the positioning groove.

[0015] By adopting the above technical solution, the positioning block and positioning groove play a positioning role when installing the chisel, preventing the plug from rotating inside the plug groove during use.

[0016] Furthermore, a reinforcing spring is provided inside the sliding groove, and the two ends of the reinforcing spring are fixedly connected to the connecting column and the positioning block, respectively.

[0017] By adopting the above technical solution, the positioning block is forced against the reinforcing spring, which allows the positioning block to apply force to the plug-in post, making the plug-in post and the fixed post fit more tightly. This reduces the displacement of the plug-in post and the fixed post caused by the force exerted during the use of the steel chisel, thereby improving the fixing effect of the fixed post on the plug-in post.

[0018] Furthermore, a buffer pad is fitted on the plug-in post. The buffer pad is a rubber pad, and its two sides are respectively attached to the support block and the connecting post.

[0019] By adopting the above technical solution, the rubber pad can buffer the vibration generated by the force applied to the steel chisel during the user's use of the chisel.

[0020] Furthermore, an anti-slip strip is fixed to the handle. The anti-slip strip is a rubber strip and is wrapped around the handle.

[0021] By adopting the above technical solution, when the user holds the handle, it will come into contact with the anti-slip strip. The anti-slip strip can increase the friction between the user's palm and the handle, thereby playing an anti-slip role.

[0022] In summary, this application includes at least one of the following beneficial effects: 1. This application enables quick fixing of the chisel head and handle through a fixing structure, and disassembly is relatively convenient, realizing quick replacement of the chisel head, significantly improving work efficiency. The connection effect is good, and it will not easily loosen or fall off. At the same time, the operation is simple, and the chisel head can be replaced without the aid of other tools.

[0023] 2. In this application, by applying a reinforcing spring to the positioning block, the positioning block can apply force to the insertion post, making the insertion post and the fixed post fit more tightly. This reduces the displacement of the insertion post and the fixed post caused by the force during the use of the steel chisel, thereby improving the fixing effect of the fixed post on the insertion post. At the same time, the positioning block and the positioning groove cooperate to position the insertion post and restrict the rotation of the insertion post inside the insertion groove, thereby improving the connection between the chisel head and the handle. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the steel chisel in this application; Figure 2 This is an anatomical view of the chisel head and handle in this application; Figure 3 This application Figure 2 Enlarged view of point A in the middle; Figure 4 This is a disassembly diagram of the chisel head and handle in this application; Figure 5 This application Figure 4 Enlarged diagram of point B in the middle.

[0025] Explanation of reference numerals in the attached figures: 1. Chisel head; 11. Insert post; 12. Handle; 13. Connecting post; 14. Insert groove; 15. Support block; 2. Fixing structure; 21. Fixing post; 22. Lifting block; 23. Movable groove; 24. Fixing groove; 25. Fixing ring; 26. Fixing spring; 3. Positioning groove; 31. Sliding groove; 32. Positioning block; 33. Reinforcing spring; 4. Buffer pad; 5. Anti-slip strip. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0027] This application discloses a quick-change steel chisel.

[0028] Reference Figure 1 and Figure 2 A quick-change steel chisel includes a chisel head 1, a support block 15 fixed to one end of the chisel head 1, a plug-in post 11 fixed to the end of the support block 15 away from the chisel head 1, a handle 12 provided at the end of the plug-in post 11 away from the support block 15, a connecting post 13 fixed to the end of the handle 12 near the plug-in post 11, a plug-in groove 14 provided on the connecting post 13, the plug-in post 11 slidably disposed inside the plug-in groove 14, and a fixing structure 2 provided between the plug-in post 11 and the connecting post 13.

[0029] When installing the chisel head 1, insert the plug pin 11 into the plug groove 14 on the connecting pin 13. Then, under the action of the fixing structure 2, the plug pin 11 is fixed in the plug groove 14, thus connecting the chisel head 1 and the handle 12. The connection between the chisel head 1 and the handle 12 is achieved through the fixing structure 2, and disassembly is convenient. The replacement of the chisel head 1 can be completed without the aid of other tools, improving the ease of use of the steel chisel.

[0030] Reference Figures 3-5 The fixed structure 2 includes a fixed column 21 that is slidably disposed inside the connecting column 13. One end of the fixed column 21 extends out of the connecting column 13 and is fixed with a lifting block 22. The connecting column 13 has a movable groove 23 inside, and the fixed column 21 is slidably disposed inside the movable groove 23. The plug-in column 11 has a fixed groove 24 that is adapted to the fixed column 21, and the end of the fixed column 21 away from the lifting block 22 slides into the fixed groove 24.

[0031] Among them, a fixing ring 25 is fixed on the fixing column 21, and a fixing spring 26 is slidably sleeved on the fixing column 21. The two ends of the fixing spring 26 are fixedly connected to the connecting column 13 and the fixing ring 25 respectively.

[0032] Furthermore, both the ends of the fixing post 21 and the insertion post 11 are arc-shaped.

[0033] When inserting the plug 11 into the insertion slot 14, pull the lifting block 22 to pull the fixing post 21. As the fixing post 21 moves, it drives the fixing ring 25 to move. The movement of the fixing ring 25 compresses the fixing spring 26. After the end of the plug 11 is in contact with the bottom of the insertion slot 14, release the lifting block 22. At this time, under the action of the fixing spring 26, the fixing post 21 returns to its original position. After returning to its original position, the fixing post 21 extends into the fixing hole. Under the action of the fixing spring 26 and the fixing post 21, the insertion is achieved. When disassembly is required, pull the lifting block 22 to separate the fixed post 21 from the fixed groove 24. Then pull the chisel head 1 to separate the insertion post 11 from the insertion groove 14, thus completing the disassembly. The fixing structure 2 can quickly fix the chisel head 1 and the handle 12, and the disassembly is relatively convenient. This enables the rapid replacement of the chisel head 1, significantly improving work efficiency. The connection effect is good, and it will not easily loosen or fall off. At the same time, the operation is simple, and the replacement of the chisel head 1 can be completed without the aid of other tools.

[0034] Reference Figure 4 and Figure 5 The end of the plug-in post 11 away from the support block 15 is provided with a positioning groove 3, and the bottom of the plug-in groove 14 is provided with a sliding groove 31. The sliding groove 31 is provided with a positioning block 32, which is adapted to the positioning groove 3.

[0035] The sliding groove 31 is equipped with a reinforcing spring 33, and the two ends of the reinforcing spring 33 are fixedly connected to the connecting column 13 and the positioning block 32, respectively.

[0036] During the process of inserting the plug 11 into the plug groove 14, the positioning block 32 connects with the positioning groove 3. Then, the plug 11 is pushed further, causing the positioning block 32 to be squeezed and move into the sliding groove 31. During the movement, the reinforcing spring 33 is squeezed. After the plug 11 is fixed by the fixing post 21, the reinforcing spring 33 applies force to the positioning block 32, which allows the positioning block 32 to apply force to the plug 11, making the plug 11 and the fixing post 21 fit more tightly. This reduces the phenomenon of displacement of the plug 11 and the fixing post 21 caused by the force during the use of the steel chisel, thereby improving the fixing effect of the fixing post 21 on the plug 11. At the same time, the positioning block 32 and the positioning groove 3 cooperate to position the plug 11, restricting the rotation of the plug 11 inside the plug groove 14, thereby improving the connection between the chisel head 1 and the handle 12.

[0037] Reference Figure 4 and Figure 5 A buffer pad 4 is fitted on the plug post 11. The buffer pad 4 is a rubber pad, and its two sides are respectively attached to the support block 15 and the connecting post 13.

[0038] When the user uses the steel chisel, the force is transmitted to the rubber pad, which can buffer the vibration and reduce impact vibration.

[0039] Reference Figure 1 and Figure 4 An anti-slip strip 5 is fixed on the handle 12. The anti-slip strip 5 is a rubber strip and is wrapped around the handle 12.

[0040] When the user holds the handle 12, the palm will come into contact with the anti-slip strip 5. The anti-slip strip 5 can increase the friction between the user's palm and the handle 12, thereby playing an anti-slip role. When force is applied during use, it can reduce the problem of the handle 12 slipping off.

[0041] Working principle: When installing the chisel head 1, insert the plug pin 11 into the plug groove 14 on the connecting pin 13. When inserting the plug pin 11 into the plug groove 14, pull the lifting block 22 to pull the fixing pin 21. When the fixing pin 21 moves, it drives the fixing ring 25 to move. The movement of the fixing ring 25 will compress the fixing spring 26. After the end of the plug pin 11 is in contact with the bottom of the plug groove 14, release the lifting block 22. At this time, under the action of the fixing spring 26, the fixing pin 21 is reset. After the fixing pin 21 is reset, it extends into the fixing hole. Under the action of the fixing spring 26 and the fixing pin 21, the plug pin 11 is fixed. Furthermore, during the process of inserting the plug 11 into the plug groove 14, the positioning block 32 is connected to the positioning groove 3. Then, the plug 11 is pushed further, causing the positioning block 32 to be squeezed and move into the sliding groove 31. During the movement, the reinforcing spring 33 is squeezed. After the plug 11 is fixed by the fixing post 21, the reinforcing spring 33 applies force to the positioning block 32, which enables the positioning block 32 to apply force to the plug 11. When it is necessary to replace the chisel head 1 and disassemble the chisel head 1, the lifting block 22 is pulled to separate the fixing post 21 from the fixing groove 24. Then, the chisel head 1 is pulled to separate the plug 11 from the plug groove 14, completing the disassembly.

Claims

1. A quick-change steel chisel, comprising a chisel head (1), characterized in that: One end of the chisel (1) is fixed with a support block (15), and the end of the support block (15) away from the chisel (1) is fixed with a plug post (11). The end of the plug post (11) away from the support block (15) is provided with a handle (12). The end of the handle (12) near the plug post (11) is fixed with a connecting post (13). The connecting post (13) is provided with a plug groove (14). The plug post (11) is slidably disposed inside the plug groove (14). A fixing structure (2) is provided between the plug post (11) and the connecting post (13).

2. The quick-change steel chisel according to claim 1, characterized in that: The fixed structure (2) includes a fixed column (21) that is slidably disposed inside the connecting column (13). One end of the fixed column (21) extends out of the connecting column (13) and is fixed with a lifting block (22). The connecting column (13) has a movable groove (23) inside. The fixed column (21) is slidably disposed inside the movable groove (23). The plug-in column (11) has a fixed groove (24) that is adapted to the fixed column (21). The end of the fixed column (21) away from the lifting block (22) slides into the fixed groove (24).

3. The quick-change steel chisel according to claim 2, characterized in that: A fixing ring (25) is fixed on the fixing column (21), and a fixing spring (26) is slidably sleeved on the fixing column (21). The two ends of the fixing spring (26) are fixedly connected to the connecting column (13) and the fixing ring (25) respectively.

4. A quick-change steel chisel according to claim 2, characterized in that: The ends of the fixed post (21) and the plug post (11) are both arc-shaped.

5. A quick-change steel chisel according to claim 1, characterized in that: The insertion post (11) has a positioning groove (3) at one end away from the support block (15). The bottom of the insertion groove (14) has a sliding groove (31). The sliding groove (31) has a positioning block (32) inside. The positioning block (32) is adapted to the positioning groove (3).

6. A quick-change steel chisel according to claim 5, characterized in that: The sliding groove (31) is provided with a reinforcing spring (33), and the two ends of the reinforcing spring (33) are fixedly connected to the connecting column (13) and the positioning block (32) respectively.

7. A quick-change steel chisel according to claim 1, characterized in that: A buffer pad (4) is fitted on the plug-in post (11). The buffer pad (4) is a rubber pad. The two sides of the buffer pad (4) are respectively attached to the support block (15) and the connecting post (13).

8. A quick-change steel chisel according to claim 1, characterized in that: An anti-slip strip (5) is fixed on the handle (12). The anti-slip strip (5) is a rubber strip and is wrapped around the handle (12).

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