Electric screw driver with buffer mechanism

Abstract

The utility model discloses an electric screwdriver with a buffer mechanism, and belongs to the technical field of screwdrivers. Comprising an electric screw driver body, a mounting base is arranged at the bottom end of the electric screw driver body, a screw driver head is inserted into the bottom end of the mounting base, a rotating shaft rod is arranged in the electric screw driver body, and the end of the rotating shaft rod extends into the mounting base. The screwdriver head can be inserted into the mounting base, the transmission block is embedded into the transmission groove, the rotating shaft rod can drive the screwdriver head to rotate through the transmission block, meanwhile, the transmission block can be contracted through the pressure spring, and after the screwdriver head stops rotating, the transmission block can drive the screwdriver head to rotate. The transmission block can move along the inclined face under the action of extrusion force, so that the transmission block is separated from the interior of the transmission groove to complete separation, and buffering of the screwdriver head is completed.

Description

TECHNICAL FIELD

[0001] The utility model relates to screwdriver technical field especially, it relates to a kind of electric screwdriver with buffer mechanism. BACKGROUND

[0002] Screwdriver is divided into manual and electric, electric screwdriver is just through motor drive transmission rod to rotate, and transmission rod drives bit to rotate, can save manpower, so that the use of screwdriver is more convenient.

[0003] But the existing screwdriver is not provided with buffer structure, some material is relatively fragile in screwing screw, and strength is too large to cause the material to be damaged, and strength is small and can be screwed tightly, and the experience of personnel using electric screwdriver is not rich enough, so it is difficult to master the tightness, and subsequent manual tightening is needed, it is inconvenient to use, for this, we propose a kind of electric screwdriver with buffer mechanism to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the shortcomings of prior art in the background art, and provides an electric screwdriver with buffer mechanism.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme:

[0006] An electric screwdriver with buffer mechanism, including electric screwdriver main part, the bottom end of electric screwdriver main part is provided with mounting seat, the bottom end of mounting seat is inserted with screwdriver head, the inside of electric screwdriver main part is provided with rotating shaft, the end of rotating shaft extends to the inside of mounting seat, the bottom end of rotating shaft is inserted with transmission block, the top end of screwdriver head is provided with transmission groove, transmission block and transmission groove are mutually adapted, transmission block is provided with five edges, and each edge of transmission block is inclined, the inside of rotating shaft is provided with pressure spring.

[0007] Rotating shaft can drive transmission block to embed in the inside of transmission groove, so that rotating shaft drives screwdriver head to rotate, when screwdriver head is resisted, rotating shaft continues to rotate and drives transmission block to shrink, so that transmission block is separated from the inside of transmission groove and does not drive screwdriver head to rotate, so that screwdriver head can be buffered.

[0008] Preferably, the middle position of the screwdriver head is provided with a limiting groove, the limiting groove is annularly arranged, a limiting rod is inserted into the inside of the limiting groove, and the limiting rod extends into the inside of the limiting groove.

[0009] The limiting rod can extend into the limiting groove to limit the screwdriver bit from falling off after the screwdriver bit is inserted into the interior of the mounting seat.

[0010] Preferably, the end of the limiting rod is provided with a spherical shape, and the other end of the limiting rod is provided with a supporting spring, and the other end of the supporting spring is fixedly connected with the inner wall of the mounting seat.

[0011] The supporting spring supports the limiting rod, and the spherical shape of the end of the limiting rod makes the screwdriver bit convenient to disassemble and assemble.

[0012] Preferably, the interior of the rotating shaft rod is provided with an adjusting block, one end of the pressure spring is fixedly connected with the top end of the transmission block, and the other end of the pressure spring is fixedly connected with the adjusting block.

[0013] The movement of the adjusting block can change the elastic coefficient of the pressure spring, so that the contraction degree of the transmission block is replaced, and then the buffering degree is changed to adapt to different degrees of material.

[0014] Preferably, the periphery of the adjusting block is provided with a sliding block, and the inner wall of the rotating shaft rod is provided with a sliding slot.

[0015] The sliding stability of the adjusting block is better, and the adjusting block is prevented from shaking and separating.

[0016] Preferably, the interior of the sliding slot is provided with a threaded rod, the sliding block is sleeved outside the threaded rod, the bottom end of the threaded rod is provided with a transmission gear, the bottom end of the rotating shaft rod is provided with an adjusting rotating slot, the interior of the adjusting rotating slot is provided with a transmission screw sleeve, the transmission screw sleeve is provided with an L shape, and the inner wall of the transmission screw sleeve is matched with the transmission gear.

[0017] The transmission screw sleeve is rotated to drive a plurality of transmission gears to rotate, the transmission gear drives the threaded rod to rotate, and the threaded rod drives the sliding block to move, so that the movement of the adjusting block is more convenient.

[0018] Preferably, the bottom end of the transmission screw sleeve is provided with a plurality of adjusting rods, and the adjusting rods extend into the adjusting rotating slot.

[0019] A small rod-shaped tool can extend into the adjusting rotating slot, and then the adjusting rod is actuated to rotate the transmission gear, and then the elastic coefficient of the pressure spring is adjusted.

[0020] Compared with the prior art, the utility model has the advantages that:

[0021] 1. The utility model can insert screwdriver bit into the inside of mounting seat, make transmission block embed into the inside of transmission groove, so that the rotating shaft can drive screwdriver bit to rotate through transmission block, and the transmission block can contract through pressure spring, so that the transmission block will move along the inclined surface under the action of extrusion force after screwdriver bit stops rotating, thereby completing separation from the inside of transmission groove and completing the buffering of screwdriver bit.

[0022] 2. The utility model can extend small rod-shaped object to the inside of adjusting rotating groove, then move adjusting rod, make adjusting rod drive transmission screw bush to rotate, make transmission screw bush drive transmission gear to rotate, and transmission gear drives threaded rod to rotate, make threaded rod drive sliding block and adjusting block to move, so that the elastic coefficient of pressure spring can be adjusted, and then the intensity of buffering can be adjusted according to use condition, make the use effect of the device better. DRAWINGS

[0023] Figure 1 It is a three-dimensional structure schematic diagram of electric screwdriver with buffering mechanism proposed by the utility model;

[0024] Figure 2 It is Figure 1 It is a front view cross section structure schematic diagram of mounting seat in the utility model;

[0025] Figure 3 It is Figure 2 It is a front view cross section structure schematic diagram of rotating screw rod in the utility model;

[0026] Figure 4 It is Figure 3 It is an enlarged structure schematic diagram of A in the utility model.

[0027] In the drawing: 1, electric screwdriver main part; 2, mounting seat; 3, screwdriver bit; 4, limiting groove; 5, limiting rod; 6, support spring; 7, rotating shaft; 8, transmission block; 9, transmission groove; 10, pressure spring; 11, adjusting block; 12, sliding slot; 13, sliding block; 14, threaded rod; 15, transmission gear; 16, transmission screw bush; 17, adjusting rod; 18, adjusting rotating groove. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0029] Refer to Figures 1-4The electric screwdriver with a buffer mechanism is provided with a mounting seat 2 at the bottom end of an electric screwdriver body 1, a screwdriver head 3 is then inserted into the bottom end of the mounting seat 2, a rotating shaft 7 is arranged in the electric screwdriver body 1, the rotating shaft 7 extends to the inside of the mounting seat 2 at the end thereof, a transmission block 8 is inserted into the bottom end of the rotating shaft 7, a transmission groove 9 is formed at the top end of the screwdriver head 3, the transmission block 8 and the transmission groove 9 are matched with each other, the transmission block 8 is provided in a pentagon shape, and each side of the transmission block 8 is provided in an inclined manner, a pressure spring 10 is arranged in the rotating shaft 7, a limiting groove 4 is formed at the middle position of the screwdriver head 3, the limiting groove 4 is provided in an annular shape, a limiting rod 5 is inserted into the inside of the mounting seat 2, the limiting rod 5 extends to the inside of the limiting groove 4, the end of the limiting rod 5 is provided in a spherical shape, the other end of the limiting rod 5 is provided with a supporting spring 6, the other end of the supporting spring 6 is fixedly connected with the inner wall of the mounting seat 2, an adjusting block 11 is arranged in the rotating shaft 7, one end of the pressure spring 10 is fixedly connected with the top end of the transmission block 8, and the other end of the pressure spring 10 is fixedly connected with the adjusting block 11.

[0030] The transmission gear 15 in the embodiment will be described in detail. Figure 3 and Figure 4 The sliding blocks 13 are arranged around the adjusting block 11, sliding grooves 12 are formed around the inner wall of the rotating shaft 7, the sliding blocks 13 extend to the inside of the sliding grooves 12, the threaded rods 14 are arranged in the inside of the sliding grooves 12, the sliding blocks 13 are sleeved on the outside of the threaded rods 14, the transmission gear 15 is arranged at the bottom end of the threaded rods 14, the adjusting rotation grooves 18 are formed at the bottom end of the rotating shaft 7, the transmission screw sleeves 16 are arranged in the inside of the adjusting rotation grooves 18, the transmission screw sleeves 16 are provided in an L shape, the inner wall of the transmission screw sleeves 16 is matched with the transmission gear 15, the adjusting rods 17 are arranged at the bottom end of the transmission screw sleeves 16, the adjusting rods 17 extend to the inside of the adjusting rotation grooves 18, the two sides of the inner wall of the adjusting rotation grooves 18 are connected through the support columns, and simple rod-shaped adjusting objects can be made, for example, small rods are arranged around the outside of the end of the head and extend to the inside of the adjusting rotation grooves 18 and are in contact with the adjusting rods 17.

[0031] Working principle: the utility model discloses in use, the screwdriver bit 3 is inserted to the inside of mounting seat 2, subsequently makes the supporting spring 6 drive limit rod 5 embeds to the inside of limit slot 4, can avoid the situation that the screwdriver bit 3 falls, simultaneously the transmission block 8 can be inserted to the inside of transmission groove 9, make the rotation of rotating shaft rod 7 can drive screwdriver bit 3 to rotate, when screwdriver bit 3 is resisted, rotating shaft rod 7 continues to drive transmission block 8 to rotate in the inside of transmission groove 9, make the inclined surface of transmission block 8 is extruded, to move upwards in turn, and then make transmission block 8 contract to the inside of rotating shaft rod 7, thereby will not drive screwdriver bit 3 to continue to rotate, complete the buffering of screwdriver bit 3.

[0032] Meanwhile can make the rod-shaped adjustment object extend to the inside of adjusting rotation groove 18, subsequently rotates the rod-shaped adjustment object drive adjusting rod 17 to rotate, make adjusting rod 17 drive transmission screw sleeve 16 to rotate, and transmission screw sleeve 16 drive threaded rod 14 to rotate through transmission gear 15, make sliding block 13 and adjusting block 11 can move, thereby complete the adjustment of the elastic coefficient of pressure spring 10, make the buffering degree of screwdriver bit 3 rotation can be adjusted, it is convenient to use.

[0033] In the utility model, the installation mode, the connection mode or the setting mode of all the components described above are common mechanical modes, and the specific structure, model and coefficient index of all the components are self-contained technologies, as long as the beneficial effects can be achieved, implementation can be carried out, so no more elaboration is made.

[0034] The above embodiment is the preferred embodiment of the utility model, but the embodiment of the utility model is not limited by the above embodiment, any change, modification, replacement, combination, simplification made without departing from the spirit and principle of the utility model should be equivalent replacement, which is included in the protection scope of the utility model.

[0035] In the utility model, under the condition of no opposite statement, the orientation words in the terms such as up and down, left and right, front and back, inside and outside and vertical and horizontal only represent the orientation of the terms in the conventional use state or the common name understood by the person skilled in the art, and should not be regarded as the limitation of the terms, at the same time, the ordinal terms such as first, second and third do not represent the specific quantity and order, but are only used for the differentiation of the name, and moreover, the term "include", "contain" or any other variant is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

Claims

1. A power screwdriver having a buffer mechanism, comprising a power screwdriver main body (1), characterized in that, The bottom end of the electric screwdriver body (1) is provided with a mounting seat (2), the bottom end of the mounting seat (2) is provided with a screwdriver head (3), the inside of the electric screwdriver body (1) is provided with a rotating shaft rod (7), the end of the rotating shaft rod (7) extends to the inside of the mounting seat (2), the bottom end of the rotating shaft rod (7) is provided with a transmission block (8), the top end of the screwdriver head (3) is provided with a transmission groove (9), the transmission block (8) and the transmission groove (9) are matched with each other, the transmission block (8) is provided in a pentagonal shape, and each side of the transmission block (8) is provided in an inclined manner, and the inside of the rotating shaft rod (7) is provided with a pressure spring (10).

2. The electric screwdriver having a buffer mechanism according to claim 1, wherein The middle position of the screwdriver head (3) is provided with a limiting groove (4), and the limiting groove (4) is provided in an annular shape. The inside of the mounting seat (2) is provided with a limiting rod (5), and the limiting rod (5) extends to the inside of the limiting groove (4).

3. The electric screwdriver having a buffer mechanism according to claim 2, wherein The end of the limiting rod (5) is provided in a spherical shape, the other end of the limiting rod (5) is provided with a supporting spring (6), and the other end of the supporting spring (6) is fixedly connected with the inner wall of the mounting seat (2).

4. The electric screwdriver with a buffer mechanism according to claim 1, wherein The inside of the rotating shaft rod (7) is provided with an adjusting block (11), one end of the pressure spring (10) is fixedly connected with the top end of the transmission block (8), and the other end of the pressure spring (10) is fixedly connected with the adjusting block (11).

5. The electric screwdriver having a buffer mechanism according to claim 4, wherein The four sides of the adjusting block (11) are provided with sliding blocks (13), and the inner wall of the rotating shaft rod (7) is provided with sliding grooves (12) around it. The sliding blocks (13) extend to the inside of the sliding grooves (12).

6. The electric screwdriver having a buffer mechanism according to claim 5, wherein The inside of the sliding groove (12) is provided with a threaded rod (14), the sliding block (13) is sleeved on the outside of the threaded rod (14), the bottom end of the threaded rod (14) is provided with a transmission gear (15), the bottom end of the rotating shaft rod (7) is provided with an adjusting rotating groove (18), the inside of the adjusting rotating groove (18) is provided with a transmission screw sleeve (16), the transmission screw sleeve (16) is provided in an L shape, and the inner wall of the transmission screw sleeve (16) is matched with the transmission gear (15).

7. The electric screwdriver having a buffer mechanism according to claim 6, wherein The bottom end of the transmission screw sleeve (16) is provided with a plurality of adjusting rods (17), and the adjusting rods (17) extend to the inside of the adjusting rotating groove (18).

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