Direct current screwdriver output shaft

Abstract

The utility model discloses a direct current screwdriver output shaft which comprises an output end, the output shaft is fixedly installed at the end of the output end, a connecting column is connected into the output shaft in a clamped mode, a tool bit is fixedly installed at the end, away from the output shaft, of the connecting column, and a machining assembly is arranged outside the output end. The machining assembly comprises a dismounting and mounting assembly arranged outside the output end, an auxiliary assembly is arranged on the inner side of the dismounting and mounting assembly, the dismounting and mounting assembly forms one part, and when the tool bit needs to be replaced, a sliding ring is pushed towards the direction of the tool bit, so that the sliding ring drives an extrusion block fixedly installed on the inner side of the sliding ring to move along with the sliding ring; due to the fact that one end of a second spring is fixedly installed on the inner wall of the side, close to the extrusion block, of the clamping block, under the elastic effect of the second spring, the clamping block is pushed towards the outer portion of the output shaft, at the moment, the clamping block is not connected with the clamping groove in a clamped mode, and the connecting column and the tool bit can be detached.

Description

Technical Field

[0001] The utility model relates to the technical field of screwdriver output shafts, in particular to a DC screwdriver output shaft. Background Art

[0002] The output shaft of a DC screwdriver is one of the key components of an electric screwdriver. It is responsible for converting the motor's rotational motion into a torque suitable for tightening or loosening the screw through a reduction mechanism and transmitting it to the screwdriver head. The design and manufacturing quality of the output shaft directly affects the performance, durability and service life of the electric screwdriver.

[0003] When replacing the screwdriver bit on the existing screwdriver output shaft, the bit is simply sleeved on the output shaft, resulting in poor stability of the bit when in use.

[0004] Therefore, we propose a DC screwdriver output shaft that can firmly install the screwdriver head to improve its use stability. Utility Model Content

[0005] The purpose of the utility model is to provide a DC screwdriver output shaft to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a DC screwdriver output shaft, comprising an output end, an output shaft fixedly mounted on the end of the output end, a connecting column clamped inside the output shaft, a cutter head fixedly mounted on the end of the connecting column away from the output shaft, and a processing component arranged outside the output end, the processing component comprising a disassembly and assembly component arranged outside the output end, and an auxiliary component arranged inside the disassembly and assembly component.

[0007] The disassembly and assembly assembly includes a fixed plate fixedly installed on the outer wall of the output shaft, a sliding rod is slidably arranged inside the fixed plate, a first spring is sleeved on the outer wall of the sliding rod, a slip ring is slidably arranged on the outer wall of the sliding rod, an extrusion block is fixedly installed on the inner side of the slip ring, a movable plate is fixedly installed on the end of the sliding rod away from the fixed plate, a pressure ring is fixedly installed on the outer wall of the movable plate, a clamping block is slidably arranged inside the output shaft, a baffle is fixedly installed inside the output shaft, a second spring is fixedly installed on the outer wall of the baffle, and a clamping groove is opened on the outer wall of the connecting column.

[0008] Preferably, the auxiliary component includes an annular groove opened at the end of the output shaft, a shock-absorbing ring is sleeved inside the annular groove, a first magnetic plate is fixedly installed at the end of the connecting column, and a second magnetic plate is fixedly installed inside the output shaft.

[0009] Preferably, the outer wall of the extrusion block is arranged in an inclined surface, and the card block is arranged in an inclined surface near one end of the extrusion block. The extrusion block is arranged in contact with the inclined surface of the card block. Under its restriction, when the extrusion block slides in the direction away from the connecting column, its inclined surface presses the inclined surface of the card block, causing the card block to slide toward the inside of the output shaft.

[0010] Preferably, the clamping block is clamped with the clamping slot, and there are four clamping blocks, which are cross-distributed with the center of the output shaft. Under the clamping restriction of the clamping block and the clamping slot, the connection column and the cutter head can be prevented from falling off.

[0011] Preferably, one end of the second spring is fixedly installed on the side of the baffle plate close to the extrusion block, and the end of the second spring away from the baffle plate is fixedly installed on the inner wall of the card block close to the extrusion block. Under the elastic action of the second spring, when the card block is not squeezed, the card block can slide toward the outside of the output shaft.

[0012] Preferably, the clamping block is slidably arranged with the outer wall of the baffle plate, and the clamping block is slidably arranged with the output shaft, and under the restriction of the baffle plate, the clamping block can slide stably inside the output shaft.

[0013] Preferably, the card slot and the card block are adapted to be card-engaged, and the pressure ring is sleeved on the outer wall of the output shaft. When the pressure ring is squeezed, it is sleeved on the output shaft to avoid a gap between the output shaft and the connecting column.

[0014] Preferably, the shock absorbing ring is made of rubber material, and the shock absorbing ring is connected with the adapter. Under the restriction of the shock absorbing ring made of rubber material, the wear of the connecting column and the output shaft can be reduced.

[0015] Preferably, the first magnetic plate and the second magnetic plate are magnetically attracted to each other, and the outer wall of the first magnetic plate is slidably arranged inside the output shaft, so that the connection column and the installation stability can be increased under the restriction of magnetic attraction.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The output shaft of the DC screwdriver is composed of a disassembly and assembly component. When the cutter head needs to be replaced, the slip ring is pushed toward the cutter head, so that the slip ring drives the extrusion block fixedly installed inside the slip ring to move accordingly. At this time, the outer wall inclined surface of the extrusion block is no longer squeezed by the clamping block. Since one end of the second spring is fixedly installed with the inner wall of the clamping block close to the extrusion block, the clamping block is pushed toward the outside of the output shaft under the elastic action of the second spring. At this time, the clamping block is no longer engaged with the clamping groove, and the connecting column and the cutter head can be disassembled. When the connecting column needs to be installed, the pressure ring and the slip ring are pushed toward each other. The extrusion block is not extruded by the card block. At this time, the connecting column is inserted into the output shaft, and the slip ring is loosened. Under the elastic action of the first spring, the extrusion block is extruded by the card block, and the card block compresses the second spring, so that the card block is engaged with the card slot. At this time, the pressure ring is loosened, and its outer wall contacts the connecting column. Under the limitation of the connecting column, the pressure ring can be pressed, and the pressure ring presses the first spring, and the first spring applies pressure to the outer wall of the slip ring, so that the extrusion block is always pressed against the outer wall of the card block. This structure can quickly disassemble and assemble the connecting column, and under the limitation of the pressing of the connecting column, the slip ring can be prevented from sliding easily.

[0018] 2. The output shaft of the DC screwdriver is composed of an auxiliary component. When the connecting column and the output shaft are clamped, the damping ring fixedly installed at the end of the connecting column is sleeved with the annular groove opened at the end of the output shaft. Under the buffering of the damping ring, the friction between the connecting column and the output shaft can be reduced. When the connecting column and the output shaft are clamped, the first magnetic plate and the second magnetic plate are magnetically attracted to each other, which assists the installation of the connecting column and the output shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional appearance diagram of the structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the disassembly and assembly components and auxiliary components of the utility model structure.

[0021] Figure 3 This is a diagram of the disassembly and assembly of the structure of the utility model.

[0022] Figure 4 It is an exploded schematic diagram of the disassembly and assembly components of the structure of the utility model.

[0023] Figure 5 This is a diagram of the auxiliary components of the structure of the utility model.

[0024] Figure 6 It is a cross-sectional schematic diagram of the auxiliary components of the structure of the utility model.

[0025] In the figure: 1. output end; 2. output shaft; 3. connecting column; 4. cutter head; 5. processing component; 51. disassembly and assembly component; 53. auxiliary component; 511. fixed plate; 512. slide rod; 513. first spring; 514. slip ring; 515. movable plate; 516. pressure ring; 517. extrusion block; 518. clamping block; 519. baffle; 520. second spring; 521. clamping groove; 531. ring groove; 532. shock-absorbing ring; 533. first magnetic plate; 534. second magnetic plate. DETAILED DESCRIPTION

[0026] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings.

[0027] Example 1

[0028] A preferred embodiment of the DC screwdriver output shaft provided by the utility model is as follows: Figures 1 to 6 As shown: a DC screwdriver output shaft, including an output end 1; an output shaft 2 is fixedly installed at the end of the output end 1; a connecting column 3 is clamped inside the output shaft 2; a cutter head 4 is fixedly installed at one end of the connecting column 3 away from the output shaft 2; and a processing component 5 arranged outside the output end 1, the processing component 5 includes a disassembly component 51 arranged outside the output end 1, the disassembly component 51 includes a fixed plate 511 fixedly installed on the outer wall of the output shaft 2, a slide bar 512 is slidably arranged inside the fixed plate 511, and the slide bar 512 A first spring 513 is sleeved on the outer wall, a slip ring 514 is slidably arranged on the outer wall of the slide rod 512, an extrusion block 517 is fixedly installed on the inner side of the slip ring 514, a movable plate 515 is fixedly installed on the end of the slide rod 512 away from the fixed plate 511, a pressure ring 516 is fixedly installed on the outer wall of the movable plate 515, a clamping block 518 is slidably arranged inside the output shaft 2, a baffle 519 is fixedly installed inside the output shaft 2, a second spring 520 is fixedly installed on the outer wall of the baffle 519, and a clamping groove 521 is opened on the outer wall of the connecting column 3.

[0029] In this embodiment, when the cutter head 4 needs to be replaced, the slip ring 514 is pushed toward the cutter head 4, so that the slip ring 514 drives the extrusion block 517 fixedly installed on the inner side thereof to move accordingly. At this time, the outer wall inclined surface of the extrusion block 517 is no longer squeezed by the clamping block 518. Since one end of the second spring 520 is fixedly installed with the clamping block 518 close to the inner wall of one side of the extrusion block 517, under the elastic action of the second spring 520, the clamping block 518 is pushed toward the outside of the output shaft 2. At this time, the clamping block 518 is no longer clamped with the clamping groove 521, and the connecting column 3 and the cutter head 4 can be disassembled. When the connecting column 3 needs to be installed, the pressure ring 516 and the slip ring 514 are pushed toward each other, so that the extrusion block 517 is not squeezed by the clamping block 518. At this time, the connecting column 3 is inserted into the output shaft 2, and the slip ring 514 is loosened. Under the elastic action of the first spring 513, the extrusion block 517 is squeezed with the clamping block 518, and the clamping block 518 compresses the second spring 520, so that the clamping block 518 is clamped with the clamping groove 521. At this time, the pressing ring 516 is loosened, and its outer wall contacts the connecting column 3. Under the restriction of the connecting column 3, the pressing ring 516 can be pressed, and the pressing ring 516 presses the first spring 513. The first spring 513 then applies pressure to the outer wall of the slip ring 514, so that the extrusion block 517 is always squeezed with the outer wall of the clamping block 518. This structure can quickly disassemble and assemble the connecting column 3, and under the pressure restriction of the connecting column 3, the slip ring 514 can be prevented from sliding easily.

[0030] Among them, the outer wall of the extrusion block 517 is set as an inclined surface, and the clamping block 518 is set as an inclined surface close to one end of the extrusion block 517. The extrusion block 517 is set in contact with the inclined surface of the clamping block 518. Under its restriction, when the extrusion block 517 slides in the direction away from the connecting column 3, its inclined surface squeezes the inclined surface of the clamping block 518, causing the clamping block 518 to slide toward the inside of the output shaft 2.

[0031] The clamping block 518 is clamped with the clamping slot 521 . There are four clamping blocks 518 , which are cross-distributed with the output shaft 2 as the center. Under the clamping restriction of the clamping block 518 and the clamping slot 521 , the connection column 3 and the cutter head 4 can be prevented from falling off.

[0032] Among them, one end of the second spring 520 is fixedly installed on the side of the baffle 519 close to the extrusion block 517, and the end of the second spring 520 away from the baffle 519 is fixedly installed on the inner wall of the clamping block 518 close to the extrusion block 517. Under the elastic action of the second spring 520, when the clamping block 518 is not squeezed, the clamping block 518 can slide toward the outside of the output shaft 2.

[0033] The block 518 is slidably arranged with the outer wall of the baffle 519 , and the block 518 is slidably arranged with the output shaft 2 . Under the restriction of the baffle 519 , the block 518 can slide stably inside the output shaft 2 .

[0034] The card slot 521 is adapted to be card-engaged with the card block 518 , and the pressure ring 516 is sleeved with the outer wall of the output shaft 2 . When the pressure ring 516 is squeezed, it is sleeved with the output shaft 2 to avoid a gap between the output shaft 2 and the connecting column 3 .

[0035] Example 2

[0036] On the basis of Example 1, a preferred embodiment of a DC screwdriver output shaft provided by the utility model is as follows: Figures 1 to 6 As shown: the auxiliary component 53 includes an annular groove 531 opened at the end of the output shaft 2, a shock-absorbing ring 532 is sleeved inside the annular groove 531, a first magnetic plate 533 is fixedly installed at the end of the connecting column 3, and a second magnetic plate 534 is fixedly installed inside the output shaft 2.

[0037] In this embodiment, when the connecting column 3 is engaged with the output shaft 2, the shock-absorbing ring 532 fixedly installed at the end of the connecting column 3 is sleeved with the annular groove 531 opened at the end of the output shaft 2. Under the buffering of the shock-absorbing ring 532, the friction between the connecting column 3 and the output shaft 2 can be reduced. When the connecting column 3 is engaged with the output shaft 2, the first magnetic plate 533 and the second magnetic plate 534 are magnetically attracted to each other, thereby assisting the installation of the connecting column 3 and the output shaft 2.

[0038] Among them, the shock absorbing ring 532 is made of rubber material, and the shock absorbing ring 532 is connected with the adapter. Under the restriction of the shock absorbing ring 532 made of rubber material, the wear of the connecting column 3 and the output shaft 2 can be reduced.

[0039] The first magnetic plate 533 and the second magnetic plate 534 are magnetically attracted to each other, and the outer wall of the first magnetic plate 533 is slidably arranged inside the output shaft 2. Under the restriction of magnetic attraction, the connection column 3 and the installation stability can be increased.

[0040] The above is only an illustrative specific implementation method of the utility model, and is not intended to limit the scope of the utility model. Any equivalent changes and modifications made by any technician in this field without departing from the concept and principle of the utility model should fall within the scope of protection of the utility model. It should also be noted that the various components of the utility model are not limited to the above-mentioned overall application. The various technical features described in the specification of the utility model can be selected one by one or multiple ones can be selected and used in combination according to actual needs. Therefore, the utility model should naturally cover other combinations and specific applications related to the utility model points of this case.

Claims

1. A DC screwdriver output shaft, comprising an output end (1); an output shaft (2) fixedly mounted at the end of the output end (1); a connecting column (3) clamped inside the output shaft (2); a cutter head (4) fixedly mounted at one end of the connecting column (3) away from the output shaft (2); and a processing component (5) arranged outside the output end (1), characterized in that: The processing assembly (5) comprises a disassembly assembly (51) arranged outside the output end (1), and an auxiliary assembly (53) is arranged inside the disassembly assembly (51); the disassembly assembly (51) comprises a fixed plate (511) fixedly mounted on the outer wall of the output shaft (2), a slide bar (512) is slidably arranged inside the fixed plate (511), the outer wall of the slide bar (512) is sleeved with a first spring (513), and a slip ring (514) is slidably arranged on the outer wall of the slide bar (512), and the slip ring (514) is slidably arranged on the outer wall of the slide bar (512). 4) An extrusion block (517) is fixedly installed on the inner side, a movable plate (515) is fixedly installed on the end of the slide rod (512) away from the fixed plate (511), a pressure ring (516) is fixedly installed on the outer wall of the movable plate (515), a clamping block (518) is slidably arranged inside the output shaft (2), a baffle (519) is fixedly installed inside the output shaft (2), a second spring (520) is fixedly installed on the outer wall of the baffle (519), and a clamping groove (521) is provided on the outer wall of the connecting column (3).

2. A DC screwdriver output shaft according to claim 1, characterized in that: The auxiliary component (53) comprises an annular groove (531) formed at the end of the output shaft (2), a shock absorbing ring (532) being sleeved inside the annular groove (531), a first magnetic plate (533) being fixedly mounted on the end of the connecting column (3), and a second magnetic plate (534) being fixedly mounted inside the output shaft (2).

3. A DC screwdriver output shaft according to claim 1, characterized in that: The outer wall of the extrusion block (517) is arranged in an inclined surface, and the clamping block (518) is arranged in an inclined surface close to one end of the extrusion block (517), and the extrusion block (517) and the clamping block (518) are arranged in contact with each other.

4. A DC screwdriver output shaft according to claim 1, characterized in that: The clamping block (518) is clamped with the clamping slot (521), and there are four clamping blocks (518) which are distributed in a cross shape with the center of the output shaft (2).

5. The DC screwdriver output shaft according to claim 1, characterized in that: One end of the second spring (520) is fixedly mounted on a side of the baffle (519) close to the extrusion block (517), and one end of the second spring (520) away from the baffle (519) is fixedly mounted on an inner wall of a side of the clamping block (518) close to the extrusion block (517).

6. A DC screwdriver output shaft according to claim 1, characterized in that: The clamping block (518) is slidably arranged on the outer wall of the baffle plate (519), and the clamping block (518) is slidably arranged on the output shaft (2).

7. A DC screwdriver output shaft according to claim 1, characterized in that: The clamping groove (521) is adapted to be clamped with the clamping block (518), and the pressing ring (516) is sleeved on the outer wall of the output shaft (2).

8. A DC screwdriver output shaft according to claim 2, characterized in that: The shock absorbing ring (532) is made of rubber material, and the shock absorbing ring (532) is connected to the adapter.

9. A DC screwdriver output shaft according to claim 2, characterized in that: The first magnetic plate (533) and the second magnetic plate (534) are magnetically attracted to each other, and the outer wall of the first magnetic plate (533) is slidably arranged inside the output shaft (2).

Images