Screwdriver with protective sleeve structure

Abstract

The utility model discloses a screwdriver with a protective sleeve structure, which relates to the field of tools, and comprises a force application component, a locking component, a protective sleeve, a driving component, a driving component, a driving component, a driving component, a driving component and a driving component, and the force application component comprises a handle and a screwdriver head fixedly mounted at the bottom end of the handle; the spring is arranged on the outer side of the tool bit in a sleeving mode and located on the side, away from the handle, of the locking assembly; the protective sleeve unit is arranged at the bottom end of the tool bit and connected with the spring; according to the screwdriver with the protective sleeve structure, the bottom end of the protective sleeve inner barrel is driven by the large head of the screw to gradually expand outwards to be opened, and the bottom ends of the protective sleeve inner barrel and the protective sleeve outer barrel expand outwards, so that the situation that the large head of the screw extrudes the bottom ends of the protective sleeve inner barrel and the protective sleeve outer barrel between the surface of a part and the large head of the screw when the screw is fastened is prevented; meanwhile, the bottom end of the tool bit is always positioned in the inner cylinder of the protective sleeve, so that the sharp edge of the tool bit can be prevented from scratching parts and operators during use.

Description

TECHNICAL FIELD

[0001] The utility model relates to tool technology, concretely relates to a screwdriver with protective sleeve structure. BACKGROUND

[0002] Screwdriver is a common and practical hand tool, mainly used for screwing or unscrewing the screw with the notched, and the screwdriver is composed of handle and blade rod two parts, the handle part is usually designed as the shape convenient for holding, some adopt plastic, rubber and the like material to wrap to increase the comfort and antiskid performance, and some are metal integrated molding, the hand feeling is solid, and the blade rod is the working part of the screwdriver, and the end shape matches the notches of the screw head, and the common ones are one word groove (also called flat groove), cross groove (also called philips groove), hexagonal groove and the like.

[0003] The existing screwdriver has the problems of scratching the hand or the product surface when using the one word screwdriver, and the rubber sleeve is not directional collapse when the rubber sleeve is contacted and extruded with the workpiece surface before the screw is fastened, and the screw fixes the rubber sleeve and the workpiece together. UTILITY MODEL CONTENTS

[0004] The utility model discloses a screwdriver with protective sleeve structure to solve the above-mentioned deficiencies that the screwdriver is extruded between the screw and the workpiece surface by the screw when the screw is tightened in the prior art.

[0005] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme: a screwdriver with protective sleeve structure, including force applying assembly, the force applying assembly includes handle and the blade head fixedly installed at the bottom end of handle, still including:

[0006] Locking assembly is arranged at the outside of blade head;

[0007] Spring is sleeved at the outside of blade head and is located at the side, away from handle, of locking assembly;

[0008] Protective sleeve unit is arranged at the bottom end of blade head and is connected with spring, and the protective sleeve unit includes:

[0009] Protective sleeve outer cylinder is sleeved at the bottom end of spring, and the protective sleeve outer cylinder is connected with the inner wall of spring;

[0010] Protective sleeve inner cylinder is fixedly installed at the inner wall bottom of protective sleeve outer cylinder, and the bottom end of protective sleeve inner cylinder is circularly arrayed and is provided with a plurality of recesses;

[0011] A plurality of expansion ribs are respectively arranged in the bottom end of the inner tube of the protective sleeve, and the expansion ribs are located between two adjacent grooves.

[0012] Further, the locking assembly comprises a locking end and a locking nut:

[0013] The locking end is sleeved outside the middle part of the tool bit.

[0014] The locking end comprises a connecting block and a plurality of threaded blocks, the top of the threaded blocks is fixedly installed on the top of the connecting block in a circumferential array, and the threaded blocks are located outside the tool bit.

[0015] The locking nut is sleeved outside the tool bit and located at one end of the locking end close to the handle, and the locking nut is threadedly connected with the threaded blocks of the locking end.

[0016] Further, the top end of the spring is fixedly connected with the bottom end of the connecting block, the bottom end of the spring is connected with the inner side of the outer tube of the protective sleeve, and the spring is in interference fit with the outer tube of the protective sleeve.

[0017] Further, the inner diameter of the bottom end of the inner tube of the protective sleeve is smaller than the inner diameter of the top end thereof, and the outer diameter of the inner tube of the protective sleeve is the same as the inner diameter of the outer tube of the protective sleeve.

[0018] Further, the expansion ribs are made of hard material.

[0019] Further, the inner tube of the protective sleeve is located outside the bottom end of the tool bit.

[0020] Compared with the prior art, the screwdriver with the protective sleeve structure has the advantages that the screw head is inserted into the inner side of the protective sleeve inner cylinder, the screw slot at the top of the screw is aligned with the bottom end of the bit, the screw head expands the bottom end of the protective sleeve outer cylinder and the protective sleeve inner cylinder, the screw position is fixed, the bottom end of the screw is aligned with the pre-installation hole of the fixed part, the protective sleeve unit at the bottom end of the bit is rotated by rotating the handle with the hand, thereby driving the screw to rotate and screw into the pre-installation hole, when the screw gradually sinks into the pre-installation hole, the protective sleeve unit gradually approaches the fixed part until the bottom end contacts the surface of the fixed part, at this time, the handle is continuously rotated, the expansion rib is pressed against the surface of the part, so that the protective sleeve outer cylinder and the protective sleeve inner cylinder do not continue to move into the pre-installation hole along with the screw, the handle is pressed and rotated, the spring is compressed, the bit continuously drives the screw to rotate, the screw continuously moves into the pre-installation hole, the screw head moves to the outer side of the protective sleeve inner cylinder, under the influence of the inclined surface at the bottom end of the protective sleeve inner cylinder, the screw head drives the bottom end of the protective sleeve inner cylinder to gradually expand and open outward, the bottom end of the protective sleeve inner cylinder and the protective sleeve outer cylinder expands outward, preventing the situation that the bottom end of the protective sleeve inner cylinder and the protective sleeve outer cylinder is pressed between the surface of the part and the screw head when the screw is fastened, and the bottom end of the bit is always located in the protective sleeve inner cylinder, so that the sharp edge of the bit can be prevented from scratching the part and the operator during use. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0022] Figure 1 The overall structure schematic view provided by the embodiment of the present application is provided.

[0023] Figure 2 The locking assembly, spring and protective sleeve unit structure schematic view provided by the embodiment of the present application is provided.

[0024] Figure 3 The locking assembly and protective sleeve unit cross-section and spring structure schematic view provided by the embodiment of the present application is provided.

[0025] Figure 4 The protective sleeve inner cylinder and expansion rib structure schematic view provided by the embodiment of the present application is provided.

[0026] Explanation of reference signs:

[0027] 1, force assembly; 11, handle; 12, head; 2, locking assembly; 21, locking nut; 22, locking end; 221, threaded block; 222, connecting block; 3, spring; 4, protective sleeve unit; 41, protective sleeve outer cylinder; 42, protective sleeve inner cylinder; 43, expansion rib. DETAILED DESCRIPTION

[0028] In order to make the technical personnel in the art better understand the technical scheme of the utility model, the utility model will be further described in detail below with reference to the drawings.

[0029] Example one:

[0030] Please refer to Figures 1-4 A screwdriver with a protective sleeve structure, comprising a force assembly 1, the force assembly 1 comprising a handle 11 and a fixedly installed head 12 at the bottom end of the handle 11, further comprising:

[0031] Locking assembly 2, which is arranged on the outside of the head 12;

[0032] Spring 3, which is sleeved on the outside of the head 12 and located on the side away from the handle 11 of the locking assembly 2;

[0033] Protective sleeve unit 4, which is arranged at the bottom end of the head 12 and connected with the spring 3, the protective sleeve unit 4 comprising:

[0034] Protective sleeve outer cylinder 41, which is sleeved at the bottom end of the spring 3, the protective sleeve outer cylinder 41 being connected with the inner wall of the spring 3;

[0035] Protective sleeve inner cylinder 42, which is fixedly installed at the inner wall bottom of the protective sleeve outer cylinder 41, the bottom end of the protective sleeve inner cylinder 42 being circularly arrayed and provided with a plurality of grooves;

[0036] A plurality of expansion ribs 43, which are respectively built-in at the bottom end of the protective sleeve inner cylinder 42, the expansion ribs 43 being located between two adjacent grooves.

[0037] The specific embodiment is that the handle 11 is made of any one of metal, plastic and wood, the blade head 12 is made of metal, the bottom end of the blade head 12 is any one of a character shape, a cross shape, a rice character shape, a T shape (a plum blossom shape) or an H shape, the locking assembly 2 is used for locking or separating the spring 3 and the protective sleeve unit 4 from the blade head 12, when the locking assembly 2 fixes the spring 3 and the protective sleeve unit 4 on the blade head 12, the spring 3 and the protective sleeve unit 4 cannot move around the axial direction of the blade head 12, but the spring 3 and the protective sleeve unit 4 can move along the axial direction of the blade head 12, the protective sleeve outer cylinder 41 and the protective sleeve inner cylinder 42 are made of soft rubber material, the protective sleeve outer cylinder 41 and the protective sleeve inner cylinder 42 can restore the original state after slight deformation, the inner side of the protective sleeve inner cylinder 42 is wide at the top and narrow at the bottom, a plurality of grooves in a circular array shape are arranged at the bottom end of the protective sleeve inner cylinder 42, which can reduce the elastic force when the bottom end of the protective sleeve inner cylinder 42 expands or compresses, the expansion rib 43 can expand outward at the bottom end of the protective sleeve inner cylinder 42 when the bottom end of the protective sleeve inner cylinder 42 expands, so as to avoid the local collapse of the bottom end of the protective sleeve outer cylinder 41 and the inward concave.

[0038] The locking assembly 2 comprises a locking end portion 22 and a locking nut 21.

[0039] The locking end portion 22 is sleeved on the outer side of the middle portion of the blade head 12.

[0040] The locking end portion 22 comprises a connecting block 222 and a plurality of threaded blocks 221, the top of the plurality of threaded blocks 221 is arranged in a circular array shape and fixedly installed on the top of the connecting block 222, and the plurality of threaded blocks 221 are located on the outer side of the blade head 12.

[0041] The locking nut 21 is sleeved on the outer side of the blade head 12 and located at one end of the locking end portion 22 close to the handle 11, and the locking nut 21 is threadedly connected with the threaded blocks 221 of the locking end portion 22.

[0042] The top end of the spring 3 is fixedly connected with the bottom end of the connecting block 222, the bottom end of the spring 3 is connected with the inner side of the protective sleeve outer cylinder 41, and the spring 3 is interference-fitted with the protective sleeve outer cylinder 41.

[0043] The specific embodiment is that the locking assembly 2 is used for fixing with the blade head 12 and adjusting the relative position of the protective sleeve unit 4 and the blade head 12, the locking nut 21 is internally threaded, the outer side of the locking nut 21 is free of sharp edges, the outer side of the locking nut 21 is roughened to improve the friction force when the locking nut 21 is rotated, when the locking nut 21 is screwed with the threaded blocks 221, the threaded blocks 221 are screwed with the locking nut 21, the top end of the threaded blocks 221 is gathered to the blade head 12 under the extrusion of the threads, and finally is tightly attached to the blade head 12, at this time, the locking assembly 2 is fixed on the outer side of the blade head 12, and when the locking is released, only reverse operation is needed, and the protective sleeve outer cylinder 41 can be separated from or relatively rotated with the spring 3 under the influence of external force.

[0044] The inner diameter of the bottom end of the inner sleeve 42 is smaller than that of the top end, and the outer diameter of the inner sleeve 42 is the same as the inner diameter of the outer sleeve 41.

[0045] The expansion rib 43 is made of hard material.

[0046] The inner sleeve 42 is located outside the bottom end of the bit 12.

[0047] The specific implementation is that the cross section of the inner sleeve 42 is conical. When a screw needs to be screwed, the top end of the screw is inserted into the inner side of the inner sleeve 42, the screw slot at the top of the screw is aligned with the bottom end of the bit 12, the bottom end of the screw is supported by the bottom end of the outer sleeve 41 and the inner sleeve 42, the position of the screw is fixed, the bottom end of the screw is aligned with the pre-installation hole of the fixed part, the handle 11 is rotated by hand to drive the bit 12 at the bottom end of the handle 11 to rotate, thereby driving the screw to rotate and screw into the pre-installation hole. When the screw gradually sinks into the pre-installation hole, the inner sleeve 42 gradually approaches the fixed part until the bottom end contacts the surface of the fixed part. At this time, the handle 11 is continuously rotated, the expansion rib 43 is pressed against the surface of the part, so that the outer sleeve 41 and the inner sleeve 42 do not continue to move with the screw, and the screw continues to move into the pre-installation hole. The top end of the screw moves to the outside of the inner sleeve 42, and under the influence of the inclined surface of the inner wall at the bottom end of the inner sleeve 42, the top end of the screw drives the bottom end of the inner sleeve 42 to gradually expand outward, so that the top end of the screw does not extrude the bottom end of the sleeve unit 4 on the surface of the part when the screw is tightened.

[0048] The working principle is that when in use, the worker inserts the top end of the screw into the inner side of the inner sleeve 42, aligns the screw slot at the top of the screw with the bottom end of the bit 12, supports the bottom end of the screw with the bottom end of the outer sleeve 41 and the inner sleeve 42, fixes the position of the screw, aligns the bottom end of the screw with the pre-installation hole of the fixed part, rotates the handle 11 by hand to drive the bit 12 at the bottom end of the handle 11 to rotate, thereby driving the screw to rotate and screw into the pre-installation hole. When the screw gradually sinks into the pre-installation hole, the inner sleeve 42 gradually approaches the fixed part until the bottom end contacts the surface of the fixed part. At this time, the handle 11 is continuously rotated, the expansion rib 43 is pressed against the surface of the part, so that the outer sleeve 41 and the inner sleeve 42 do not continue to move with the screw, and the worker presses the handle 11 and rotates, the spring 3 is compressed, the bit 12 continues to drive the screw to rotate, the screw continues to move into the pre-installation hole, the top end of the screw moves to the outside of the inner sleeve 42, and under the influence of the inclined surface of the inner wall at the bottom end of the inner sleeve 42, the top end of the screw drives the bottom end of the inner sleeve 42 to gradually expand outward, so that the top end of the screw does not extrude the bottom end of the sleeve unit 4 on the surface of the part when the screw is tightened.

[0049] The above has only described certain exemplary embodiments of the present application by way of illustration, and it is needless to say that the described embodiments can be modified in various ways without departing from the spirit and scope of the present application for those skilled in the art. Therefore, the above drawings and descriptions are illustrative in nature, and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. A screwdriver with a protective sleeve structure, comprising a force applying assembly (1), the force applying assembly (1) comprising a handle (11) and a bit head (12) fixedly installed at the bottom end of the handle (11), characterized in that, Also include: Locking assembly (2) is provided outside the cutter head (12); Spring (3), which is sleeved outside the cutter head (12) and is located on the side away from the handle (11) of the locking assembly (2); Protective sleeve unit (4) is arranged at the bottom end of the cutter head (12) and connected with the spring (3), the protective sleeve unit (4) comprises: Protective sleeve outer cylinder (41), which is sleeved at the bottom end of the spring (3), and the protective sleeve outer cylinder (41) is connected with the inner wall of the spring (3); Protective sleeve inner cylinder (42), which is fixedly installed on the inner wall bottom of the protective sleeve outer cylinder (41), and the bottom end of the protective sleeve inner cylinder (42) is circularly arrayed and penetrates a plurality of grooves; A plurality of expansion ribs (43) are respectively arranged in the bottom end of the protective sleeve inner cylinder (42), and the expansion ribs (43) are located between two adjacent grooves.

2. The screwdriver with a protective sleeve structure according to claim 1, characterized in that, The locking assembly (2) comprises a locking end (22) and a locking nut (21): Locking end (22), which is sleeved outside the middle part of the cutter head (12); The locking end (22) comprises a connecting block (222) and a plurality of threaded blocks (221), the top of the threaded block (221) is circularly arrayed and fixedly installed on the top of the connecting block (222), and the threaded block (221) is located outside the cutter head (12); Locking nut (21), which is sleeved outside the cutter head (12) and is located at one end of the locking end (22) close to the handle (11), and the locking nut (21) is threadedly connected with the threaded block (221) of the locking end (22).

3. The screwdriver with a protective sleeve structure according to claim 2, characterized in that, The top end of the spring (3) is fixedly connected with the bottom end of the connecting block (222), the bottom end of the spring (3) is connected with the inner side of the protective sleeve outer cylinder (41), and the spring (3) is interference fit with the protective sleeve outer cylinder (41).

4. The screwdriver with a protective sleeve structure according to claim 1, characterized in that, The bottom end of the protective sleeve inner cylinder (42) is smaller than the top end of the protective sleeve inner cylinder (42), and the outer diameter of the protective sleeve inner cylinder (42) is the same as the inner diameter of the protective sleeve outer cylinder (41).

5. The screwdriver with a protective sleeve structure according to claim 1, characterized in that, The expansion rib (43) is made of hard material.

6. The screwdriver with a protective sleeve structure according to claim 1, characterized in that, The protective sleeve inner cylinder (42) is located outside the bottom end of the cutter head (12).

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