Quick-replaceable screwdriver bit

Abstract

The utility model discloses a quick-replacement screwdriver bit, and relates to the field of electric tools, the quick-replacement screwdriver bit comprises an inserting screwdriver rod, a limiting groove is formed in one end of the inserting screwdriver rod, a double-end screwdriver bit is arranged at the end, away from the limiting groove, of the inserting screwdriver rod, and a conversion supporting mechanism is arranged between the double-end screwdriver bit and the inserting screwdriver rod; the conversion supporting mechanism comprises a rotating shaft arranged at the end, away from the limiting groove, of the inserting-connecting screwdriver rod, a rotating groove is formed in the inserting-connecting screwdriver rod, and the rotating shaft is located in the rotating groove and fixedly connected with the inserting-connecting screwdriver rod. The double-end screwdriver head rotates on the rotating shaft of the conversion supporting mechanism, and then the conversion supporting mechanism is used for limiting and fixing the double-end screwdriver head, so that the screwdriver head can be conveniently replaced, and the trouble that the whole screwdriver head needs to be disassembled and replaced when the screwdriver head end is damaged is reduced.

Description

Technical Field

[0001] This application relates to the field of power tools, and in particular to a quick-change bit. Background Technology

[0002] In the field of electric screwdrivers, screwdriver bits are important components used to install and remove fasteners such as screws. Traditional screwdriver bits are usually single-ended designs. The structure of the bit is generally a hexagonal prism with a limiting groove at one end and a geometric cross-section interface design at the other end. When using it, the bit is inserted into the power tool and then fixed by the limiting groove before use.

[0003] Screwdriver bit tips are prone to wear or damage during use, rendering them unusable. Traditional bit designs often require the entire bit to be disassembled for replacement, which increases maintenance costs and reduces work efficiency. Improved bit designs have emerged in the market, such as those using double-ended bits or quick-change bit structures.

[0004] However, these designs still have some shortcomings in practical use. For example, the conversion process of some double-ended bits is not convenient enough. When changing the bit end, it is still necessary to remove the entire bit from the power tool, then change the end, and then fix it back to the power tool. This makes it complicated to change the bit end. Utility Model Content

[0005] The purpose of this application is to address the problem that the conversion process of some dual-ended bit mentioned in the background art is not convenient enough. When changing the bit end, it is still necessary to remove the entire bit from the power tool, then change the end, and then fix it back to the power tool, which makes the bit end replacement a complicated operation. This application provides a quick bit replacement method.

[0006] To achieve the above objectives, this application specifically adopts the following technical solution:

[0007] A quick-change bit includes an insert bit rod, one end of which has a limiting groove, and the other end of the insert bit rod away from the limiting groove is provided with a double-ended bit. A conversion support mechanism is provided between the double-ended bit and the insert bit rod. The conversion support mechanism includes a rotating shaft provided at the end of the insert bit rod away from the limiting groove. The insert bit rod has a rotating groove, and the rotating shaft is located in the rotating groove and fixedly connected to the insert bit rod.

[0008] By adopting the above technical solution, the double-ended bit rotates on the rotating shaft of the conversion support mechanism, and then the conversion support mechanism is used to limit and fix the double-ended bit, thereby making it convenient to replace the bit and reducing the trouble of disassembling and replacing the entire bit when the bit end is damaged.

[0009] Furthermore, the double-ended bit is located in the rotating groove, the rotating shaft passes through the double-ended bit and is rotatably connected to the double-ended bit, a fixing collar is sleeved on the insert screw rod, and a support and movement assembly is provided between the fixing sleeve and the insert screw rod.

[0010] By adopting the above technical solution, the double-ended screwdriver bit is rotated under the support of the rotating shaft. Then, the double-ended screwdriver bit is limited by the fixed collar on the plug-in screwdriver bar, which makes it easy to replace the end of the double-ended screwdriver bit and reduces the trouble of disassembling and replacing the entire screwdriver bit when the end of the bit is damaged.

[0011] Furthermore, the supporting moving assembly includes two sliding rods symmetrically arranged on the fixed collar, and the insertion screwdriver has a sliding groove corresponding to the sliding rod. The sliding rod is located in the sliding groove and is slidably connected to the insertion screwdriver.

[0012] By adopting the above technical solution, the fixed collar is supported by a sliding rod, which moves in the sliding groove, thus facilitating the movement of the fixed collar.

[0013] Furthermore, a support spring is provided inside the sliding groove, and both ends of the support spring are fixedly connected to the sliding rod and the insertion screw rod.

[0014] By adopting the above technical solution, the sliding rod compresses the support spring when it slides in the sliding groove, which makes it easier for the fixed collar to remain stable when it is reset.

[0015] Furthermore, two symmetrical reinforcing blocks are fixed on the insertion screw rod, and the two reinforcing blocks are located on both sides of the rotating groove.

[0016] By adopting the above technical solution, two reinforcing blocks are fixed on both sides of the rotating groove of the insert screwdriver bar, thereby improving the strength of the insert screwdriver bar and reducing the possibility of damage to the insert screwdriver bar.

[0017] Furthermore, the inner ring of the fixing sleeve is hexagonal and abuts against the reinforcing block.

[0018] By adopting the above technical solution, the inner wall of the fixed sleeve is made into a hexagon, and then it moves on the reinforcing block, thereby further improving the stability of the movement of the fixed collar and reducing the possibility of the fixed collar rotating.

[0019] Furthermore, each of the two reinforcing blocks is fixed with a limiting block, which corresponds to the fixing collar.

[0020] By adopting the above technical solution, a limiting block is fixed on the reinforcing block, which blocks the fixing collar, thereby reducing the possibility of the fixing collar falling off the reinforcing block of the insert screwdriver rod.

[0021] Furthermore, two symmetrical stabilizing blocks are fixed inside the fixing collar, the stabilizing blocks abut against the double-ended screwdriver bit, and the sliding rod is fixedly connected to the stabilizing blocks.

[0022] By adopting the above technical solution, the stabilizing block on the fixing collar abuts against the double-ended screwdriver bit, thereby further improving the stability of the double-ended screwdriver bit during use.

[0023] In summary, this application includes at least one of the following beneficial effects;

[0024] 1. This application, by allowing the fixing collar to slide on the reinforcing block on the insert screwdriver bar, drives the sliding rod, which slides in the sliding groove and compresses the support spring, causing the fixing sleeve to disengage from the rotating groove. Then, the double-ended screwdriver bit is directly rotated, allowing the double-ended screwdriver bit to rotate under the support of the rotating shaft, thus changing the position of the two ends of the double-ended screwdriver bit. Then, the fixing sleeve is released, and the sliding rod is pushed back onto the double-ended screwdriver bit by the support spring. The fixing collar restricts the double-ended screwdriver bit, completing the replacement of the double-ended screwdriver bit end. This achieves the purpose of conveniently replacing the end of the double-ended screwdriver bit and reducing the trouble of disassembling and replacing the entire screwdriver bit when the bit end is damaged.

[0025] 2. In this application, when the retaining collar slides on the reinforcing block of the insert screwdriver bar, and when the retaining collar re-limits the double-ended screwdriver bit, the retaining collar abuts against the limiting block. Under the limiting block's downward movement and the push of the support spring, the retaining collar remains stable, thereby reducing the possibility of the retaining collar falling off the reinforcing block of the insert screwdriver bar. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the first three-dimensional structure of the bit in this application;

[0027] Figure 2 This is a schematic diagram of the second three-dimensional structure of the bit in this application;

[0028] Figure 3 This is a schematic diagram of the disassembled structure of the bit in this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Insertion screwdriver bar; 2. Limiting groove; 3. Double-ended screwdriver bit; 4. Conversion support mechanism; 41. Rotating shaft; 42. Rotating groove; 43. Fixing collar; 44. Support moving assembly; 441. Sliding rod; 442. Sliding groove; 443. Support spring; 5. Reinforcing block; 6. Stabilizing block; 7. Limiting block. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1 —3 provides further detailed description of this application.

[0032] This application discloses a quick bit changing method.

[0033] Reference Figure 1 , Figure 2 and Figure 3 A quick-change bit includes a plug-in bit 1. One end of the plug-in bit 1 has a limiting groove 2. A double-ended bit 3 is provided at the end of the plug-in bit 1 away from the limiting groove 2. A conversion support mechanism 4 is provided between the double-ended bit 3 and the plug-in bit 1. The conversion support mechanism 4 includes a rotating shaft 41 provided at the end of the plug-in bit 1 away from the limiting groove 2. A rotating groove 42 is provided on the plug-in bit 1. The rotating shaft 41 is located in the rotating groove 42 and is fixedly connected to the plug-in bit 1. When using this bit, first insert the end of the insert screwdriver bar 1 with the limiting groove 2 into the power tool, and use the limiting groove 2 to limit the insert screwdriver bar 1. Then, face one end of the double-ended bit 3 toward the part to be installed or removed. Then, the power tool drives the insert screwdriver bar 1, and the insert screwdriver bar 1 drives the double-ended bit 3 to rotate. When it is necessary to replace the other end of the double-ended bit 3, the double-ended bit 3 is supported by the rotating shaft 41 of the conversion support mechanism 4. The double-ended bit 3 rotates in the rotating shaft 41, and the other end of the double-ended bit 3 is turned out. Then, the conversion support mechanism 4 is used to fix the double-ended bit 3, completing the end replacement of the double-ended bit 3. By allowing the double-ended bit 3 to rotate on the rotating shaft 41 of the conversion support mechanism 4, and then using the conversion support mechanism 4 to limit and fix the double-ended bit 3, it is convenient to replace the bit and reduce the trouble of disassembling and replacing the entire bit when the bit end is damaged.

[0034] Reference Figure 1 , Figure 2 and Figure 3 The double-ended bit 3 is located in the rotating groove 42. The rotating shaft 41 passes through the double-ended bit 3 and is rotatably connected to the double-ended bit 3. A fixing collar 43 is sleeved on the insert bit 1. A support and moving assembly 44 is provided between the fixing sleeve and the insert bit 1.

[0035] In addition, the supporting moving assembly 44 includes two sliding rods 441 symmetrically arranged on the fixed collar 43. The insertion screw rod 1 has a sliding groove 442 corresponding to the sliding rod 441. The sliding rod 441 is located in the sliding groove 442 and is slidably connected to the insertion screw rod 1.

[0036] Furthermore, a support spring 443 is provided inside the sliding groove 442, and both ends of the support spring 443 are fixedly connected to the sliding rod 441 and the plug-in rod 1.

[0037] Furthermore, two symmetrical reinforcing blocks 5 are fixed on the insertion screw rod 1, and the two reinforcing blocks 5 are located on both sides of the rotating groove 42.

[0038] When it is necessary to replace the end of the double-ended screwdriver bit 3, the retaining collar 43 slides on the reinforcing block 5 on the insert screwdriver bar 1. The retaining collar 43 drives the sliding rod 441, which slides in the sliding groove 442 and squeezes the support spring 443, causing the retaining sleeve to disengage from the rotating groove 42. Then, the double-ended screwdriver bit 3 is rotated directly, allowing it to rotate under the support of the rotating shaft 41, thus changing the position of both ends of the double-ended screwdriver bit 3. Then, the retaining sleeve is released, and the sliding rod 441 is pushed back onto the double-ended screwdriver bit 3 by the support spring 443. The retaining collar 43 restricts the double-ended screwdriver bit 3, completing the replacement of the end of the double-ended screwdriver bit 3. By allowing the double-ended screwdriver bit 3 to rotate under the support of the rotating shaft 41, and then using the retaining collar 43 to limit the position of the double-ended screwdriver bit 3 on the insert screwdriver bar 1, it is convenient to replace the end of the double-ended screwdriver bit 3, reducing the trouble of disassembling and replacing the entire screwdriver bit when the end is damaged.

[0039] Reference Figure 1 , Figure 2 and Figure 3 The inner ring of the fixed sleeve is hexagonal and abuts against the reinforcing block 5. When the fixed collar 43 slides on the reinforcing block 5 on the insertion screwdriver 1, the inner ring of the fixed sleeve moves along the edge of the reinforcing block 5. The reinforcing block 5 limits the movement of the fixed sleeve. By making the inner wall of the fixed sleeve hexagonal and then moving it on the reinforcing block 5, the stability of the movement of the fixed collar 43 can be further improved, and the possibility of the fixed collar 43 rotating can be reduced.

[0040] Reference Figure 1 , Figure 2 and Figure 3Each of the two reinforcing blocks 5 has a limiting block 7 fixed on it, and the limiting block 7 corresponds to the fixing collar 43. When the fixing collar 43 slides on the reinforcing block 5 of the insert screwdriver bar 1, and when the fixing collar 43 re-limits the double-ended screwdriver bit 3, the fixing collar 43 abuts against the limiting block 7. Under the limiting of the limiting block 7 and the push of the support spring 443, the fixing collar 43 remains stable. By fixing the limiting block 7 on the reinforcing block 5, the fixing collar 43 is blocked by the limiting block 7, thereby reducing the possibility of the fixing collar 43 falling off the reinforcing block 5 of the insert screwdriver bar 1.

[0041] Reference Figure 2 and Figure 3 Two symmetrical stabilizing blocks 6 are fixed inside the fixing collar 43. The stabilizing blocks 6 abut against the double-ended screwdriver bit 3, and the sliding rod 441 is fixedly connected to the stabilizing blocks 6. When the fixing collar 43 is fitted onto the insert screwdriver rod 1 to limit the position of the double-ended screwdriver bit 3, the stabilizing blocks 6 on the fixing collar 43 abut against the double-ended screwdriver bit 3. By having the stabilizing blocks 6 on the fixing collar 43 abut against the double-ended screwdriver bit 3, the stability of the double-ended screwdriver bit 3 during use can be further improved.

[0042] Working principle: When using this bit, first insert the end of the insert screwdriver bar 1 with the limiting groove 2 into the power tool, and use the limiting groove 2 to limit the insert screwdriver bar 1. Then, face one end of the double-ended bit 3 towards the part to be installed or removed. Then, the power tool drives the insert screwdriver bar 1, and the insert screwdriver bar 1 drives the double-ended bit 3 to rotate. When it is necessary to change the end of the double-ended bit 3, let the fixing collar 43 slide on the reinforcing block 5 on the insert screwdriver bar 1. The sliding rod 441 slides in the sliding groove 442 and squeezes the support spring 443, so that the fixing sleeve is disengaged from the position of the rotating groove 42. Then, directly rotate the double-ended bit 3, so that the double-ended bit 3 rotates under the support of the rotating shaft 41, so that the two ends of the double-ended bit 3 change positions. Then, release the fixing sleeve, and the sliding rod 441 is pushed by the support spring 443 to put back on the double-ended bit 3. Then, the fixing collar 43 abuts against the limiting block 7, completing the replacement of the end of the double-ended bit 3.

Claims

1. A quick-change bit, comprising a plug-in bit holder (1), characterized in that: One end of the insert screwdriver (1) is provided with a limiting groove (2), and a double-headed screwdriver bit (3) is provided at the end of the insert screwdriver (1) away from the limiting groove (2). A conversion support mechanism (4) is provided between the double-headed screwdriver bit (3) and the insert screwdriver (1). The conversion support mechanism (4) includes a rotating shaft (41) provided at the end of the insert screwdriver (1) away from the limiting groove (2). A rotating groove (42) is provided on the insert screwdriver (1). The rotating shaft (41) is located in the rotating groove (42) and is fixedly connected to the insert screwdriver (1).

2. The quick-change bit according to claim 1, characterized in that: The double-ended bit (3) is located in the rotating groove (42). The rotating shaft (41) passes through the double-ended bit (3) and is rotatably connected to the double-ended bit (3). A fixing collar (43) is sleeved on the insert screw rod (1). A support moving component (44) is provided between the fixing collar (43) and the insert screw rod (1).

3. A quick-change bit according to claim 2, characterized in that: The supporting moving assembly (44) includes two sliding rods (441) symmetrically arranged on the fixed collar (43). The plug-in screw rod (1) has a sliding groove (442) corresponding to the sliding rod (441). The sliding rod (441) is located in the sliding groove (442) and is slidably connected to the plug-in screw rod (1).

4. A quick-change bit according to claim 3, characterized in that: A support spring (443) is provided in the sliding groove (442), and both ends of the support spring (443) are fixedly connected to the sliding rod (441) and the plug-in rod (1).

5. A quick-change bit according to claim 4, characterized in that: Two symmetrical reinforcing blocks (5) are fixed on the plug-in screw (1), and the two reinforcing blocks (5) are located on both sides of the rotating groove (42).

6. A quick-change bit according to claim 5, characterized in that: The inner ring of the fixing collar (43) is hexagonal and abuts against the reinforcing block (5).

7. A quick-change bit according to claim 5, characterized in that: Both reinforcing blocks (5) are fixed with limiting blocks (7), which correspond to the fixing collar (43).

8. A quick-change bit according to claim 3, characterized in that: Two symmetrical stabilizing blocks (6) are fixed inside the fixed collar (43). The stabilizing blocks (6) abut against the double-ended bit (3). The sliding rod (441) is fixedly connected to the stabilizing blocks (6).

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