Screwdriver with replaceable tool bit

Abstract

The screwdriver with the replaceable screwdriver head comprises a screwdriver rod and a handle, a fixing block is arranged on the screwdriver rod, a limiting clamping groove corresponding to the fixing block is formed in the handle, and a containing hole for containing the end of the screwdriver rod is formed in the limiting clamping groove so that the handle can be detachably connected with the screwdriver rod. The screwdriver is novel in structure, the screwdriver rod and the handle are detachably connected, an existing integrally-formed structure of the screwdriver rod and the handle is replaced, damaged parts can be conveniently and independently replaced, intact parts can continue to be used, and maintenance cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of screwdrivers, in particular to a screwdriver with a replaceable cutter head. Background Art

[0002] A screwdriver is a common tool used to turn a screw into place, usually with a thin wedge-shaped head that fits into the slot or recess in the screw head.

[0003] The existing screwdriver includes a handle and a blade, and the handle and the blade are an integrated structure. When the blade is deformed or the blade head is damaged, it cannot be replaced, and the whole screwdriver is discarded, which wastes the intact part. The existing patent document (Announcement No.: CN210307559U) discloses "a screwdriver", and its technical solution is that the handle and the blade are integrated, which also has the above technical problems. Summary of the invention

[0004] The utility model aims to solve the above-mentioned technical problems existing in the prior art and to provide a screwdriver with a replaceable blade head. The structure is novel and a detachable connection method is adopted between the blade rod and the handle, replacing the existing one-piece structure of the blade rod and the handle, so that damaged parts can be replaced separately, and intact parts can continue to be used, thereby reducing maintenance costs.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] The screwdriver with replaceable blade head comprises: a blade bar and a handle, and is characterized in that: a fixing block is provided on the blade bar, a limiting card slot corresponding to the fixing block is provided on the handle, and a receiving hole for receiving the end of the blade bar is provided in the limiting card slot, so that the handle can be detachably connected to the blade bar. The screwdriver has a novel structure, and a detachable connection method is adopted between the blade bar and the handle, replacing the existing blade bar and handle integrally formed structure, so that damaged parts can be replaced separately, and intact parts can continue to be used, thereby reducing maintenance costs.

[0007] Furthermore, a protrusion is provided on the fixing block, and a positioning slot corresponding to the protrusion is provided on the handle. The positioning slot is communicated with the limiting slot. The protrusion is aligned with the positioning slot and inserted into the limiting slot to realize the positioning and assembly of the fixing block in the limiting slot, thereby reducing the difficulty of assembling the knife rod and the handle. The protrusion is in close contact with the inner wall of the positioning slot, and the friction force is large, so that the fixing block is not easy to freely escape from the limiting slot, which is stable and reliable.

[0008] Furthermore, an outward expansion portion is provided on the fixed block, and the cross-sectional diameter of the outward expansion portion is larger than the cross-sectional diameter of the limiting slot. During the assembly process, the outward expansion portion cannot enter the limiting slot, which limits the depth of the fixed block entering the limiting slot and ensures that the knife rod has sufficient exposed length.

[0009] Furthermore, the outward expansion portion is fixedly connected to the protruding portion, and the protruding portion is restrained by the outward expansion portion, thereby improving the connection strength between the protruding portion and the fixing block.

[0010] Furthermore, reinforcing ribs are provided on the outer circumferential surface of the fixed block, which on the one hand improves the structural strength of the fixed block and makes it less prone to deformation; on the other hand, the outer circumferential surface of the fixed block is in closer contact with the inner wall of the limiting slot, resulting in greater friction, and the fixed block is not easy to freely escape from the limiting slot, thereby improving the assembly reliability of the knife rod and the handle.

[0011] Furthermore, both ends of the knife bar are provided with magnetic knife heads, which facilitate operation by magnetically adsorbing metal fasteners.

[0012] Furthermore, the fixing block is bonded and fixed to the knife rod, which is reliable and not easy to come off, thereby ensuring the connection strength between the fixing block and the knife rod.

[0013] Furthermore, the handle is provided with anti-skid grooves, which increase the roughness of the handle surface, thereby improving the friction, making it less likely to slip and more reliable to use.

[0014] The utility model has the following beneficial effects due to the adoption of the above technical solution:

[0015] 1. A detachable connection is adopted between the knife bar and the handle, replacing the existing one-piece structure of the knife bar and the handle, which is convenient for replacing damaged parts separately, and the intact parts can continue to be used, reducing maintenance costs. The knife heads at both ends of the knife bar can be used, which improves the utilization rate; the fixing block is inserted into the limiting slot, and one end of the knife bar is located in the accommodating hole. At this time, the outer peripheral surface of the fixing block is in close contact with the inner wall of the limiting slot. The friction force is used to limit the fixing block from freely escaping from the limiting slot, so that the knife bar is limited on the handle, and the operation is simple.

[0016] 2. Align the raised part with the positioning slot and insert it to realize the positioning assembly of the fixed block in the limiting slot, which reduces the difficulty of assembling the tool rod and the handle. The raised part is in close contact with the inner wall of the positioning slot, and the friction is large, making it difficult for the fixed block to freely escape from the limiting slot, thereby improving the assembly stability of the tool rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the structure of a screwdriver with replaceable blade heads according to the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the connection between the fixed block and the knife rod in the utility model;

[0020] Figure 3 It is a structural schematic diagram of the fixing block in the utility model;

[0021] Figure 4 It is a structural schematic diagram of the handle in the utility model.

[0022] In the figure: 1- knife bar; 2- handle; 3- fixing block; 4- limiting slot; 5- receiving hole; 6- raised part; 7- positioning slot; 8- outward expansion part; 9- reinforcing rib; 10- magnetic knife head; 11- anti-slip groove. DETAILED DESCRIPTION

[0023] like Figures 1 to 4 As shown, the utility model shows a screwdriver with replaceable blade head, comprising: a shank 1 and a handle 2, the shank 1 is provided with a fixing block 3, the handle 2 is provided with a limiting slot 4 which is clearance-matched with the fixing block 3, and the limiting slot 4 is provided with a receiving hole 5 for receiving the end of the shank 1.

[0024] The knife bar 1 and the handle 2 are connected in a detachable manner, replacing the existing one-piece structure of the knife bar 1 and the handle 2, which is convenient for replacing damaged parts separately, and the intact parts can continue to be used, reducing maintenance costs. The knife heads at both ends of the knife bar 1 can be used, which improves utilization. The fixing block 3 is inserted into the limiting slot 4, and one end of the knife bar 1 is located in the accommodating hole 5. At this time, the outer peripheral surface of the fixing block 3 is in close contact with the inner wall of the limiting slot 4. The friction force limits the fixing block 3 from freely escaping from the limiting slot 4, so that the knife bar 1 is limited on the handle 2, and the operation is simple.

[0025] A protrusion 6 is provided on the fixing block 3, and a positioning groove 7 corresponding to the protrusion 6 is provided on the handle 2. The positioning groove 7 is communicated with the limiting groove 4. The protrusion 6 is aligned with the positioning groove 7 and inserted to realize the positioning and assembly of the fixing block 3 in the limiting groove 4, which reduces the assembly difficulty of the arbor 1 and the handle 2. The protrusion 6 is in close contact with the inner wall of the positioning groove 7, and the friction force is large, so that the fixing block 3 is not easy to freely escape from the limiting groove 4, which is stable and reliable.

[0026] The fixed block 3 is provided with an expansion portion 8, the cross-sectional diameter of the expansion portion 8 is larger than the cross-sectional diameter of the limit slot 4. During the assembly process, the expansion portion 8 cannot enter the limit slot 4, limiting the depth of the fixed block 3 entering the limit slot 4, ensuring that the shank 1 has a sufficient exposed length. The expansion portion 8 is fixedly connected to the protrusion 6, and the expansion portion 8 restrains the protrusion 6, thereby improving the connection strength between the protrusion 6 and the fixed block 3.

[0027] Reinforcing ribs 9 are provided on the outer circumferential surface of the fixing block 3. On the one hand, the structural strength of the fixing block 3 is improved and it is not easy to deform. On the other hand, the outer circumferential surface of the fixing block 3 is in closer contact with the inner wall of the limiting slot 4, and the friction force is greater. The fixing block 3 is not easy to freely escape from the limiting slot 4, thereby improving the assembly reliability of the arbor 1 and the handle 2.

[0028] The fixing block 3 and the knife bar 1 can be fixed by epoxy adhesive, which is reliable and not easy to be disengaged, thereby ensuring the connection strength between the fixing block 3 and the knife bar 1.

[0029] Both ends of the knife rod 1 are provided with a magnetic knife head 10, which can magnetically absorb metal fasteners for easy operation.

[0030] The handle 2 is provided with an anti-skid groove 11, which increases the roughness of the surface of the handle 2, thereby increasing the friction, making it less likely to slip and more reliable to use.

[0031] The above are only specific embodiments of the utility model, but the technical features of the utility model are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the utility model to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the utility model.

Claims

1. A screwdriver with replaceable blades, including: The knife bar and handle, Features: The knife rod is provided with a fixing block, the handle is provided with a limiting slot corresponding to the fixing block, and the limiting slot is provided with an accommodating hole for accommodating the end of the knife rod, so that the handle can be detachably connected to the knife rod.

2. The screwdriver with replaceable blade according to claim 1, characterized in that: The fixing block is provided with a protrusion, the handle is provided with a positioning slot corresponding to the protrusion, and the positioning slot is communicated with the limiting slot.

3. The screwdriver with replaceable blade according to claim 2, characterized in that: The fixing block is provided with an outward expansion portion, and the cross-sectional diameter of the outward expansion portion is larger than the cross-sectional diameter of the limiting slot.

4. The screwdriver with replaceable blade according to claim 3, characterized in that: The outward expansion portion is fixedly connected to the protruding portion.

5. The screwdriver with replaceable blade according to claim 1, characterized in that: Reinforcing ribs are arranged on the outer peripheral surface of the fixing block.

6. The screwdriver with replaceable blade according to claim 1, characterized in that: Both ends of the knife rod are provided with magnetic knife heads.

7. The screwdriver with replaceable blade according to claim 1, characterized in that: The fixing block is bonded and fixed to the knife rod.

8. The screwdriver with replaceable blade according to claim 1, characterized in that: The handle is provided with an anti-slip groove.

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