Quick-release screwdriver bit connecting rod

Abstract

The invention provides a quick-release screwdriver bit connecting rod which at least comprises a body and an outer lantern ring. The rear end and the front end of the body are respectively provided with a first rod part and a second rod part, and the second rod part is sequentially provided with a first outer enclosure, a second outer enclosure and a third outer enclosure from back to front. The outer diameter of the first outer ring is larger than that of the second outer ring, and the outer diameter of the second outer ring is larger than that of the third outer ring. A plurality of steel ball holes are formed in the third outer ring in a surrounding mode, a steel ball is arranged in each steel ball hole, a first annular groove is formed in the front end of the third outer ring, and a compressible ring is arranged in the first annular groove. A first inner ring and a second inner ring are arranged at the rear end and the front end of the interior of the outer lantern ring respectively, and the inner diameter of the first inner ring is larger than that of the second inner ring. An M-shaped groove is formed in the front end of the second inner enclosure, and a first blocking enclosure is arranged behind the M-shaped groove.

Description

Technical Field

[0001] This invention relates to a quick-release screwdriver head extension rod, particularly a screwdriver head extension rod that can be applied to the nose cone assembly of various screwdrivers or various screwdriver tools and has a quick-release screwdriver head function. Background Technology

[0002] For example, US Patent Publication No. 10406661B2, "Nosepiece and magazine for powerscrewdriver," discloses a nose cone assembly for a screwdriver. This nose cone assembly includes a bit holder for attaching and replacing various screwdriver bits and for extending the bit's length. The nose cone assembly positions and secures the bit holder, and its depth can be adjusted to limit the screw's tightening depth, preventing the screw from penetrating the board.

[0003] Because the internal aperture of the nose cone assembly is a fixed size (approximately 11.2 mm), all screwdriver bit extensions currently used with this nose cone assembly are snap-on type (see US10406661B2). Figure 1 However, this type of snap-on screwdriver bit extension is difficult to remove and replace by hand. Tools such as clips must be used to assist in replacing the screwdriver bit. Furthermore, the screwdriver bit inside the snap-on extension tends to loosen and become unstable after a period of use, making it very inconvenient to use.

[0004] For example, US Patent No. USD478263S, "BIT HOLDER," describes a traditional quick-release screwdriver tip extender. Its advantage lies in its ability to quickly replace screwdriver bits via a spring-loaded quick-release mechanism. However, because this quick-release mechanism requires an internal spring, its outer diameter is significantly larger than that of a snap-on screwdriver tip extender, making it incompatible with the nose cone assembly of screwdrivers. Furthermore, the user must press the spring sequentially to change the screwdriver bit, which is inconvenient.

[0005] Therefore, the inventor of this case, drawing on years of experience in the manufacture and research of construction, screws and various tools, specifically studied the problems existing in the aforementioned screwdriver head connector and invented this case. Summary of the Invention

[0006] The present application aims to provide a screwdriver head adapter rod which can be used with the nose cone assembly of a screwdriver machine and has a quick release function. The present application has a minimum outer diameter through the innovative quick release structure design, and the outer diameter can be adjusted according to the use requirements to be the same or smaller than the outer diameter of various screwdriver head adapter rods on the market (the maximum outer diameter of the quick release screwdriver head adapter rod of the present application can be less than 11.2 mm). Furthermore, the present application can use a composite structure of various materials to reduce the manufacturing cost of the quick release screwdriver head adapter rod. In this way, the present application can be applied to various screw locking tools, and the screwdriver head can be replaced more conveniently through the two-stage switch, thereby improving the construction efficiency of the screwdriver machine.

[0007] To achieve the foregoing purposes, the quick release screwdriver head adapter rod of the present application at least includes a body and a sleeve ring. The rear end and the front end of the body are respectively provided with a first rod part and a second rod part, the first rod part is provided with a joint, and the front end of the second rod part is provided with a recess at the middle position. The second rod part is sequentially provided with a first outer ring, a second outer ring and a third outer ring from rear to front, the outer diameter of the first outer ring is greater than that of the second outer ring, and the outer diameter of the second outer ring is greater than that of the third outer ring. The rear end of the third outer ring is surrounded by a plurality of steel ball holes, and a steel ball is arranged in each steel ball hole, which can partially extend into the recess. The front end of the third outer ring is provided with a first annular groove, and a compressible ring is arranged in the first annular groove. The rear end and the front end of the inside of the sleeve ring are respectively provided with a first inner ring and a second inner ring, the inner diameter of the first inner ring is greater than that of the second inner ring, the first inner ring is correspondingly sleeved on the second outer ring of the second rod part, and the second inner ring is correspondingly sleeved on the third outer ring of the second rod part. The front end of the second inner ring is provided with an M-shaped groove, and a first stop ring is arranged behind the M-shaped groove. The outer surface of the sleeve ring is provided with a three-dimensional anti-slip part.

[0008] The application also provides a quick-release type spoon head connector rod, which comprises a body and a sleeve ring. The rear end and the front end of the body are respectively provided with a first rod part and a second rod part. The first rod part is provided with a connector. The front end of the second rod part is provided with a groove in the middle. The second rod part is sequentially provided with a first outer ring, a second outer ring and a third outer ring from back to front. The outer diameter of the first outer ring is greater than that of the second outer ring, and the outer diameter of the second outer ring is greater than that of the third outer ring. The middle position of the third outer ring is surrounded by a plurality of steel ball holes, and each steel ball hole is provided with a steel ball which can partially extend into the groove. The front end of the third outer ring is provided with a first annular groove, and a compressible ring is arranged in the first annular groove. The inner part of the sleeve ring is respectively provided with a first inner ring and a second inner ring at the rear end and the front end. The inner diameter of the first inner ring is greater than that of the second inner ring. The first inner ring is correspondingly sleeved on the second outer ring of the second rod part, and the second inner ring is correspondingly sleeved on the third outer ring of the second rod part. The front end of the second inner ring is provided with an M-shaped groove, and a first stop ring is arranged behind the M-shaped groove. The rear end of the second inner ring of the sleeve ring is provided with a second annular groove, and the rear end of the second annular groove is provided with a second stop ring. The second annular groove is used for accommodating the steel ball in the steel ball hole, and the second stop ring is used for resisting the steel ball in the steel ball hole. The outer surface of the sleeve ring is provided with a three-dimensional anti-slip structure.

[0009] In an embodiment, the rear end of the second rod part is sleeved with an outer sleeve, and the first rod part is clamped and fixed by the second rod part and the outer sleeve together.

[0010] In an embodiment, the second outer ring is arranged on the second rod part.

[0011] In an embodiment, the second outer ring is arranged on the outer sleeve.

[0012] In an embodiment, a magnet is arranged in the groove of the second rod part. The second rod part is made of a metal material with ferromagnetism, and the outer sleeve is made of a material without ferromagnetism.

[0013] In an embodiment, a magnet is arranged in the groove of the second rod part.

[0014] In an embodiment, the rear end of the first stop ring is provided with an inclined surface.

[0015] In an embodiment, the outer diameter of the second rod part and the outer diameter of the sleeve ring are both less than 11.2 mm.

[0016] The quick-release spoon head connector rod of the present invention, wherein the plurality of steel ball holes can be arranged around the middle position of the third outer ring, and a second annular groove is arranged at the rear end of the second inner ring of the sleeve ring, the rear end of the second annular groove is provided with a second stop ring, the second annular groove is used to accommodate the steel balls in the steel ball holes, and the second stop ring is used to resist the steel balls in the steel ball holes as the second anti-release mechanism of the sleeve ring.

[0017] The quick-release spoon head connector rod of the present invention, wherein the body can be a one-piece structure or an assembled structure. The body of the assembled structure of the present invention is sleeved with a sleeve sleeve at the rear end of the second rod part, and the first rod part is clamped and fixed by the second rod part and the sleeve sleeve, and the first outer ring is arranged on the sleeve sleeve. The second outer ring can be arranged on the second rod part or the sleeve sleeve to improve the assembly efficiency or reduce the manufacturing cost. The body of the assembled structure can adjust the distribution of the ferromagnetic property, the second rod part is made of a metal material with ferromagnetic property, and the sleeve sleeve is made of a material without ferromagnetic property, so that the periphery of the second rod part does not have ferromagnetic property, so as to avoid that the second rod part adsorbs external metal iron filings or impurities, affecting the use of the spoon head connector rod. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a perspective view of the first embodiment of the present invention.

[0019] Figure 2 is an assembly schematic view of Figure 1 .

[0020] Figure 3 is a cross-sectional view of the sleeve ring of Figure 2 .

[0021] Figure 4 is a cross-sectional view of the body of Figure 2 .

[0022] Figure 5 is a first action view of Figure 1 .

[0023] Figure 6 is a second action view of Figure 1 .

[0024] Figure 7 is a perspective view of the second embodiment of the present invention.

[0025] Figure 8 is an assembly schematic view of Figure 7 .

[0026] Figure 9 is a cross-sectional view of the sleeve ring of Figure 8 .

[0027] Figure 10 is a sectional view of the body of Figure 8

[0028] Figure 11 is a first action diagram of Figure 7

[0029] Figure 12 is a second action diagram of Figure 7

[0030] Figure 13 is a third action diagram of Figure 7

[0031] Figure 14 is a first embodiment of the three-dimensional slip stop of the sleeve ring of the present invention.

[0032] Figure 15 is a second embodiment of the three-dimensional slip stop of the sleeve ring of the present invention.

[0033] Figure 16 is a third embodiment of the three-dimensional slip stop of the sleeve ring of the present invention.

[0034] Figure 17 is a fourth embodiment of the three-dimensional slip stop of the sleeve ring of the present invention.

[0035] Figure 18 is a first embodiment of the assembled structure of the body of the present invention.

[0036] Figure 19 is an assembled schematic diagram of Figure 18

[0037] Figure 20 is a second embodiment of the assembled structure of the body of the present invention.

[0038] Figure 21 is an assembled schematic diagram of Figure 20

[0039] Figure 22 is a first action diagram of the nose cone assembly of the screwdriver machine applied by the present invention.

[0040] Figure 23 is a second action diagram of the nose cone assembly of the screwdriver machine applied by the present invention.

[0041] Explanation of main element symbols:

[0042] ​​​​​​Body 1, first rod portion 11, joint 111, second rod portion 12, recess 121, outer sleeve 122, first outer ring 123, second outer ring 124, third outer ring 125, steel ball hole 126, first annular groove 127, compressible ring 128, magnet 13, steel ball 14, outer sleeve ring 2, first inner ring 21, second inner ring 22, M-shaped groove 221, first stop ring 222, second annular groove 223, second stop ring 224, three-dimensional anti-slip portion 24, screwdriver head 3 DETAILED DESCRIPTION

[0043] For a further understanding of the application, the best mode of the quick-release screwdriver head adapter will be described in accordance with the following examples: Figures 1-23 The best mode of the quick-release screwdriver head adapter comprises a body 1 and an outer sleeve ring 2.

[0044] The rear end and the front end of the body 1 are respectively provided with a first rod portion 11 and a second rod portion 12. The first rod portion 11 is provided with a joint 111 to connect various screwdriver machines or tools. The outer diameter of the second rod portion 12 is smaller than the inner diameter of the nose cone assembly of various screwdriver machines (which can be less than 11.2 mm), so that the second rod portion 12 can move smoothly in the nose cone assembly of various screwdriver machines. The front end of the second rod portion 12 is provided with a recess 121 in the middle position. Various screwdriver heads 3 can be arranged in the recess 121. When the quick-release screwdriver head adapter is applied to lock non-metallic objects (such as stone plates, wooden plates, or various non-metallic horizontal plate members), the bottom of the recess 121 can be provided with a magnet 13, so that the screwdriver heads 3 arranged in the recess 121 can have ferromagnetic properties to attract screws and facilitate the user to lock the screws. In addition, the debris cut by the non-metallic object will not be attracted to the screwdriver heads 3 and fall into the recess 121, causing the screwdriver heads 3 to be stuck in the recess 121.

[0045] The second rod portion 12 is sequentially provided with a first outer ring 123, a second outer ring 124, and a third outer ring 125 from rear to front. The outer diameter of the first outer ring 123 is greater than the outer diameter of the second outer ring 124, and the outer diameter of the second outer ring 124 is greater than the outer diameter of the third outer ring 125. In this way, the outer sleeve ring 2 can be sleeved on the second outer ring 124 and the third outer ring 125. The outer diameter of the outer ring of the outer sleeve ring 2 can be equal to or less than the outer diameter of the first outer ring 123 of the second rod portion 12, so that the body 1 and the outer sleeve ring 2 can move smoothly and stably in the nose cone assembly of various screwdriver machines.

[0046] The rear end of the third outer ring 125 is provided with a plurality of steel ball holes 126, and a steel ball 14 is arranged in each steel ball hole 126, which can extend partially into the groove 121 to hold the screwdriver bit 3 in the groove 121. The front end of the third outer ring 125 is provided with a first annular groove 127, and a compressible ring 128 is arranged in the first annular groove 127, which can be a rubber ring or a metal C-shaped buckle, etc.

[0047] The body 1 can be a one-piece structure or an assembled structure. As shown in Figures 18-21 The rear end of the second rod portion 12 can be sleeved with an outer sleeve 122, and the first rod portion 11 is clamped and fixed by the second rod portion 12 and the outer sleeve 122, and the first outer ring 123 is arranged on the outer sleeve 122. The second outer ring 124 can be arranged on the second rod portion 12 or the outer sleeve 122, which is determined according to the manufacturing requirements. As shown in Figure 18 and Figure 19 When the second outer ring 124 is arranged on the outer sleeve 122, the material of the outer sleeve 122 can be replaced to reduce the manufacturing cost and improve the market competitiveness. Figure 20 and Figure 21 When the second outer ring 124 is arranged on the second rod portion 12, the second outer ring 124 can be used as a limiting component to position the assembly position of the outer sleeve 122.

[0048] In addition, when the magnet 13 is arranged in the groove 121 of the second rod portion 12, the body 1 of the assembled structure can adjust the distribution of ferromagnetism, wherein the second rod portion 12 is made of a metal material with ferromagnetism, and the outer sleeve 122 is made of a material without ferromagnetism, so that the periphery of the second rod portion 12 does not have ferromagnetism, to avoid the periphery of the second rod portion 12 from adsorbing external metal iron filings or impurities, affecting the use of the screwdriver bit. Furthermore, in order to make the second rod portion 12 have the best structural strength and ferromagnetism, the second rod portion 12 must be made of a ferromagnetic steel material with a higher price; since the outer sleeve 122 can be made of a metal or non-metal material with a lower price, higher structural strength and no ferromagnetism, such as black iron, the assembled structure of the second rod portion 12 and the outer sleeve 122 can save the manufacturing cost to improve the market competitiveness.

[0049] The rear end and the front end of the inner part of the outer sleeve ring 2 are respectively provided with a first inner ring 21 and a second inner ring 22, the inner diameter of the first inner ring 21 is larger than the inner diameter of the second inner ring 22, so that the first inner ring 21 is correspondingly sleeved on the second outer ring 124 of the second rod part 12, the second inner ring 22 is correspondingly sleeved on the third outer ring 125 of the second rod part 12, and the first outer ring 123 of the second rod part 12 can be used to limit the distance of the rearward movement of the outer sleeve ring 2. The front end of the second inner ring 22 is provided with an M-shaped groove 221, and a first stop ring 222 is arranged behind the M-shaped groove 221, the rear end of the first stop ring 222 can be provided with an inclined surface, so that the first stop ring 222 forms a barb structure, which can assist and guide the assembly of the outer sleeve ring 2 and the body 1, and can prevent the outer sleeve ring 2 from being separated from the body 1 in the reverse direction.

[0050] As shown in Figures 14-17 , the outer surface of the outer sleeve ring 2 is provided with a three-dimensional anti-skid part 24, which can be a plurality of annular three-dimensional textures, rough surfaces, or a composite structure of a plurality of annular three-dimensional textures and rough surfaces, depending on the use requirement or the aesthetic requirement.

[0051] Therefore, after the body 1 and the outer sleeve ring 2 are assembled and combined with each other, the outer sleeve ring 2 can move forward and backward on the second outer ring 124 and the third outer ring 125 of the second rod part 12, and the M-shaped groove 221 of the outer sleeve ring 2 can move forward and backward on the compressible ring 128 of the body 1, and the movement range of the outer sleeve ring 2 is limited by the first outer ring 123 of the second rod part 12 and the first stop ring 222 of the outer sleeve ring 2, so that the outer sleeve ring 2 is prevented from being separated from the body 1.

[0052] As shown in Figure 5 and Figure 6 , when the outer sleeve ring 2 is pushed inward to the bottom, the second inner ring 22 of the outer sleeve ring 2 abuts against the steel ball 14 in the steel ball hole 126, and the steel ball 14 is partially pushed into the groove 121 of the second rod part 12, so that the screwdriver bit 3 in the groove 121 is positioned by the steel ball 14 (as shown in Figure 5 ). When the outer sleeve ring 2 is pushed outward to the end, the second inner ring 22 of the outer sleeve ring 2 is separated from the steel ball 14 in the steel ball hole 126, and there is a movement space between the steel ball 14 and the first inner ring 21 of the outer sleeve ring 2, so that the steel ball 14 can move outward out of the groove 121 of the second rod part 12, so that the screwdriver bit 3 in the groove 121 can be removed and replaced, which is the operation mode of the quick-release screwdriver bit connecting rod of the present application (as shown in Figure 6 ).

[0053] AsFigures 7-13 As shown, in the second embodiment of the present invention, the plurality of steel ball holes 126 are arranged around the middle position of the third outer ring 125, and a steel ball 14 is disposed in each steel ball hole 126. The steel ball 14 can partially extend into the groove 121 to hold the screwdriver head in the groove 121. The rear end of the second inner ring 22 of the outer ring 2 is provided with a second annular groove 223, and the rear end of the second annular groove 223 is provided with a second stop ring 224. The second annular groove 223 is used to accommodate the steel ball 14 in the steel ball hole 126. When the screwdriver head 3 is inserted into the groove 121, the second stop ring 224 is used to abut against the steel ball 14 in the steel ball hole 126, which serves as a second anti-detachment mechanism for the outer ring 2. Even if the compressible ring 128 deforms and wears out after repeated use, the outer ring 2 will not loosen and fall off.

[0054] like Figures 11-13 As shown, when the outer ring 2 is pushed inward to the bottom, the second inner ring 22 of the outer ring 2 abuts against the steel ball 14 in the steel ball hole 126, and the steel ball 14 is partially pushed into the groove 121 of the second rod portion 12, so that the screwdriver head 3 in the groove 121 is held and positioned by the steel ball 14 (e.g., Figure 11 (As shown). When the outer ring 2 is pushed outward to the end, the second annular groove 223 of the second inner ring 22 moves to the position of the steel ball hole 126. There is a moving space between the steel ball 14 and the second annular groove 223, allowing the steel ball 14 to move outward out of the groove 121 of the second rod portion 12. In this way, the screwdriver bit 3 in the groove 121 can be removed and replaced (e.g., Figure 12 (As shown). When the user applies excessive force and causes the first stop ring 222 of the outer ring 2 to pass over the compressible ring 128, the second stop ring 224 will abut against the steel ball 14 in the steel ball hole 126 to prevent the outer ring 2 from falling off (as shown). Figure 13 (As shown).

[0055] It is worth mentioning that the purpose of setting the second outer ring 124 of the second rod portion 12 and the first inner ring 21 of the outer ring 2 in this invention is mainly to increase the grip space of the outer ring 2, so as to facilitate the user to perform a quick grip operation. And because the outer ring 2 is very thin at the first inner ring 21, it can prevent the user's hand from being pinched when operating. Even if its overall rod diameter is very small (less than 11.2mm), the user can still operate very smoothly.

[0056] like Figure 22 and Figure 23As shown, the quick-release screwdriver head adapter of the present application, through the innovative body and sleeve ring structure, can be used with various screwdriver nose assemblies or various screw locking tools, and has the function of quick-release of the screwdriver head. The outer diameter of the quick-release screwdriver head adapter of the present application can be adjusted according to the use requirements to be the same or smaller than the outer diameter of various screwdriver head adapters on the market (the outer diameter can be less than 11.2 mm). Furthermore, the present application can use a composite structure of various materials to reduce the manufacturing cost of the quick-release screwdriver head adapter, and allow users to replace the screwdriver head more simply and quickly, thereby improving the construction efficiency of the screwdriver machine, which constitutes the present application.

[0057] The aforementioned first, second, etc. words are used to represent the distinction of names, and do not represent any specific order. The aforementioned embodiments or drawings are not limited to the implementation or use of the present application, and any appropriate changes or modifications by those skilled in the art shall be deemed not to deviate from the scope of the patent of the present application.

Claims

1. A quick-release screwdriver head connector, characterized in that, It includes at least one body and one outer ring, wherein: The rear end and front end of the main body are respectively provided with a first rod and a second rod. The first rod is provided with a connector, and the front end of the second rod is provided with a groove in the middle. The second rod is provided with a first outer ring, a second outer ring and a third outer ring in sequence from back to front. The outer diameter of the first outer ring is larger than the outer diameter of the second outer ring, and the outer diameter of the second outer ring is larger than the outer diameter of the third outer ring. The rear end of the third outer ring is provided with a plurality of steel ball holes, and a steel ball is provided in each steel ball hole. The steel ball can extend partially into the groove. The front end of the third outer ring is provided with a first annular groove, and a compressible ring is provided in the first annular groove. The outer ring has a first inner ring and a second inner ring at its rear end and front end, respectively. The inner diameter of the first inner ring is larger than that of the second inner ring. The first inner ring is fitted onto the second outer ring of the second rod, and the second inner ring is fitted onto the third outer ring of the second rod. The front end of the second inner ring has an M-shaped groove, and a first stop ring is provided behind the M-shaped groove. The outer surface of the outer ring has a three-dimensional anti-slip part.

2. A quick-release screwdriver head connector, characterized in that, It includes at least one body and one outer ring, wherein: The rear end and front end of the main body are respectively provided with a first rod and a second rod. The first rod is provided with a connector, and the front end of the second rod is provided with a groove in the middle. The second rod is provided with a first outer ring, a second outer ring and a third outer ring in sequence from back to front. The outer diameter of the first outer ring is larger than the outer diameter of the second outer ring, and the outer diameter of the second outer ring is larger than the outer diameter of the third outer ring. The middle position of the third outer ring is provided with a plurality of steel ball holes, and a steel ball is provided in each steel ball hole. The steel ball can extend partially into the groove. The front end of the third outer ring is provided with a first annular groove, and a compressible ring is provided in the first annular groove. The outer ring has a first inner ring and a second inner ring at its rear and front ends, respectively. The inner diameter of the first inner ring is larger than that of the second inner ring. The first inner ring is fitted onto the second outer ring of the second rod, and the second inner ring is fitted onto the third outer ring of the second rod. The front end of the second inner ring has an M-shaped groove, and a first stop ring is provided behind the M-shaped groove. The rear end of the second inner ring of the outer ring has a second annular groove, and a second stop ring is provided behind the second annular groove. The second annular groove is used to accommodate the steel ball in the ball hole, and the second stop ring is used to abut against the steel ball in the ball hole. The outer surface of the outer ring has a three-dimensional anti-slip structure.

3. The quick-release screwdriver head connector according to claim 1 or 2, characterized in that, An outer sleeve is fitted onto the rear end of the second rod, and the first rod is clamped and fixed by the second rod and the outer sleeve together. The first outer ring is arranged on the outer sleeve.

4. The quick-release screwdriver head connector according to claim 3, characterized in that, The second outer ring is disposed on the second rod.

5. The quick-release screwdriver head connector according to claim 3, characterized in that, The second outer ring is disposed on the outer sleeve.

6. The quick-release screwdriver head connector according to claim 3, characterized in that, A magnet is disposed in the groove of the second rod; the second rod is made of a ferromagnetic metal material, and the outer sleeve is made of a non-ferromagnetic material.

7. The quick-release screwdriver head connector according to claim 1 or 2, characterized in that, A magnet is placed in the groove of the second rod.

8. The quick-release screwdriver head connector according to claim 1 or 2, characterized in that, An inclined surface is provided at the rear end of the first stop ring.

9. The quick-release screwdriver head connector according to claim 1 or 2, characterized in that, The outer diameter of the second rod and the outer diameter of the outer ring are both less than 11.2 mm.

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