Percussion bit adapter

Abstract

The utility model provides a percussion bit adapter which comprises a clamping sleeve and a drill sleeve, an inner protruding ring is arranged in the clamping sleeve, the drill sleeve penetrates through the inner protruding ring, a first connecting hole and a second connecting hole are formed in the drill sleeve, the second connecting hole is used for being connected with a percussion bit, a steel ball restraining groove is formed in one side of the second connecting hole, and a steel ball is connected in the steel ball restraining groove. The drill bushing is connected with a clamp spring; a clamp sleeve upper gasket is arranged between the clamp spring and one side of the inner convex ring; a steel ball restraining gasket is arranged on the other side of the inner protruding ring, the drill sleeve is sleeved with the steel ball restraining gasket, the steel ball restraining gasket makes contact with the outer surface of the steel ball, the steel ball is restrained in the steel ball restraining groove through the steel ball restraining gasket, and the steel ball moves within the length range of the steel ball restraining groove. And a spring is arranged between the steel ball constraint gasket and the drill bushing. According to the utility model, the adaptive connection between the impact drill bit and the impact wrench can be realized, so that the impact wrench not only can realize the function of screwing a bolt, but also can realize the function of drilling, and the use function of the impact wrench is expanded.

Description

Technical Field

[0001] The utility model relates to an adapter, in particular to an impact drill bit adapter. Background Art

[0002] An impact wrench is a tool used to tighten or remove bolts and nuts. It is widely used in automotive repair, heavy equipment maintenance, product assembly and other fields. It can easily handle difficult-to-tighten parts by providing high torque output.

[0003] However, existing impact wrenches can usually only be connected to a socket or a screwdriver head to tighten bolts or screws, but cannot be adapted to be connected to an impact drill bit. Therefore, drilling operations cannot be performed through the impact wrench, resulting in limited use functions of the impact wrench. Summary of the invention

[0004] The utility model aims to solve the deficiencies in the prior art and provide an impact drill bit adapter.

[0005] The purpose of the utility model is achieved through the following technical solutions: an impact drill bit adapter, comprising a ferrule and a drill sleeve, wherein an inner convex ring is arranged in the ferrule, the drill sleeve passes through the inner convex ring, a first connecting hole and a second connecting hole are arranged in the drill sleeve, the second connecting hole is used to connect the impact drill bit, a steel ball restraining groove is arranged on one side of the second connecting hole, and a steel ball is connected in the steel ball restraining groove;

[0006] A retaining ring is connected to the drill sleeve, and a retaining ring gasket is provided between the retaining ring and one side of the inner convex ring; a steel ball restraining gasket is provided on the other side of the inner convex ring, the steel ball restraining gasket is sleeved on the drill sleeve, the steel ball restraining gasket is in contact with the outer surface of the steel ball, the steel ball is restrained in the steel ball restraining groove by the steel ball restraining gasket, and the steel ball moves within the length of the steel ball restraining groove; one side of the steel ball extends into the second connecting hole; a spring is provided between the steel ball restraining gasket and the drill sleeve.

[0007] The utility model is used for the adaptive connection between an impact drill bit and an impact wrench. The drill sleeve can rotate in the clamping sleeve, and the first connecting hole on the drill sleeve is used to connect with the connecting head on the impact wrench. The impact drill bit is connected to the second connecting hole on the drill sleeve, and the first connecting hole and the second connecting hole are coaxially arranged. When the impact drill bit is inserted into the second connecting hole on the drill sleeve, the steel ball is inserted into the positioning groove on the side of the impact drill bit, thereby realizing the connection of the drill bit. The steel ball can move within the length range of the steel ball constraint groove, so that the impact drill bit can move along its axial direction, and this movement is conducive to the impact drill bit to form a certain impact force during the drilling process. The utility model can realize the adaptive connection between the impact drill bit and the impact wrench, so that the impact wrench can realize the function of tightening bolts and nuts, and can also realize the drilling function, thereby expanding the use function of the impact wrench.

[0008] Preferably, a ferrule lower gasket is provided between the steel ball restraint gasket and the other side of the inner convex ring.

[0009] Preferably, the drill sleeve is provided with a cut plane, the steel ball restraint groove is opened within the range where the cut plane is located, the steel ball restraint gasket is provided with an arc-shaped raised area, a through groove is opened on the arc-shaped raised area, and a groove plane is provided on one side of the through groove; the drill sleeve passes through the through groove on the steel ball restraint gasket, and the groove plane on the steel ball restraint gasket contacts with the cut plane on the drill sleeve.

[0010] Preferably, one end of the drill bit is connected to a dust cap, and the dust cap is located between the drill sleeve and the ferrule.

[0011] Preferably, an annular clamping portion is provided on the inner side of the dust cap, and a dust cap annular groove is provided on the outer side of one end of the drill sleeve. The dust cap is sleeved on the drill sleeve, and the annular clamping portion on the dust cap is clamped into the dust cap annular groove on the drill sleeve.

[0012] Preferably, a locating pin hole is provided at a position on the drill sleeve corresponding to the first connecting hole, the locating pin hole is used to insert the locating pin, and an O-ring groove for installing the locating pin O-ring is provided on the periphery of the locating pin hole.

[0013] Preferably, a handle assembly is further included, wherein the handle assembly includes a ferrule for being sleeved on the ferrule, a locking bolt is provided on the ferrule, and a handle is provided on the ferrule.

[0014] The beneficial effect of the utility model is that the utility model can realize the adaptive connection between the impact drill bit and the impact wrench, so that the impact wrench can realize the function of screwing bolts and nuts and the function of drilling, thereby expanding the use function of the impact wrench. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] Figure 2 It is an exploded view of the utility model.

[0017] Figure 3 It is a cross-sectional view of the utility model.

[0018] Figure 4 A cross-sectional view of the ferrule.

[0019] Figure 5 It is a structural diagram of the drill sleeve.

[0020] Figure 6 It is a structural diagram of the card sleeve flower gasket.

[0021] Figure 7 It is a schematic diagram of the structure of the dust cap.

[0022] Figure 8 This is a schematic diagram of the utility model after the handle assembly is installed.

[0023] In the figure: 1, ferrule, 1-1, inner convex ring, 2, drill sleeve, 2-1, first connecting hole, 2-2, second connecting hole, 2-3, steel ball restraint groove, 2-4, cut plane, 2-5, O-ring groove, 2-6, locating pin insertion hole, 2-7, dust cap groove, 3, steel ball, 4, ferrule lower gasket, 5, steel ball restraint gasket, 5-1, arc-shaped raised area, 5-2, through groove, 5-3, groove plane, 6, ferrule upper gasket, 7, retaining spring, 8, dust cap, 8-1, annular clamping part, 9, spring, 10, locating pin, 11, locating pin O-ring, 12, handle assembly, 12-1, ferrule, 12-2, handle, 12-3, locking bolt. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0025] like Figures 1 to 8 As shown, an impact drill adapter comprises a ferrule 1 and a drill sleeve 2. An inner convex ring 1-1 is provided in the ferrule 1. The drill sleeve 2 passes through the inner convex ring 1-1. A first connecting hole 2-1 and a second connecting hole 2-2 are provided in the drill sleeve 2. The second connecting hole 2-2 is used to connect the impact drill. A steel ball restraining groove 2-3 is provided on one side of the second connecting hole 2-2. A steel ball 3 is connected to the steel ball restraining groove 2-3. A clamping spring 7 is connected to the drill sleeve 2. A ferrule upper gasket 6 is provided between the clamping spring 7 and one side of the inner convex ring 1-1. A steel ball restraining gasket 5 is provided on the other side of the inner convex ring 1-1. The steel ball restraining gasket 5 is sleeved on the drill sleeve 2. The steel ball restraining gasket 5 contacts the outer surface of the steel ball. The steel ball is restrained in the steel ball restraining groove 2-3 by the steel ball restraining gasket 5. The steel ball 3 moves within the length range of the steel ball restraining groove 2-3. One side of the steel ball 3 extends into the second connecting hole 2 - 2 ; a spring 9 is provided between the steel ball restraining gasket 5 and the drill sleeve 2 .

[0026] Among them, the opening width of the steel ball restraining groove near the second connecting hole is smaller than the diameter of the steel ball, so that the steel ball cannot completely pass through the steel ball restraining groove, and only part of the steel ball can extend into the second connecting hole.

[0027] The utility model is used for the adaptive connection between an impact drill bit and an impact wrench. The drill sleeve 2 can rotate in the clamping sleeve 1, and the first connecting hole 2-1 on the drill sleeve 2 is used to connect with the connector on the impact wrench. The impact drill bit is connected to the second connecting hole 2-2 on the drill sleeve 2, and the first connecting hole 2-1 and the second connecting hole 2-2 are coaxially arranged. When the impact drill bit is inserted into the second connecting hole 2-2 on the drill sleeve 2, the steel ball 3 is inserted into the positioning groove on the side of the impact drill bit, thereby realizing the connection of the drill bit. The steel ball 3 can move within the length range of the steel ball restraint groove 2-3, so that the impact drill bit can move along its axial direction, and this movement is conducive to the impact drill bit to form a certain impact force during the drilling process. The utility model can realize the adaptive connection between the impact drill bit and the impact wrench, so that the impact wrench can realize the function of screwing bolts and nuts, and can also realize the drilling function, thereby expanding the use function of the impact wrench.

[0028] Among them, a ferrule lower gasket 4 is provided between the steel ball restraint gasket 5 and the other side of the inner convex ring 1-1. A cut plane 2-4 is provided on the drill sleeve 2, and a steel ball restraint groove 2-3 is opened within the range where the cut plane 2-4 is located. A circular arc shaped raised area 5-1 is provided on the steel ball restraint gasket 5, and a through groove 5-2 is opened on the circular arc shaped raised area 5-1, and a groove plane 5-3 is provided on one side of the through groove 5-2; the drill sleeve passes through the through groove 5-2 on the steel ball restraint gasket 5, and the groove plane 5-3 on the steel ball restraint gasket 5 contacts the cut plane 2-4 on the drill sleeve 2.

[0029] Furthermore, a dust cap 8 is connected to one end of the drill bit, and the dust cap 8 is located between the drill sleeve 2 and the ferrule 1. The inner side of the dust cap 8 is provided with an annular clamping portion 8-1, and the outer side of one end of the drill sleeve 2 is provided with a dust cap annular groove 2-7. The dust cap 8 is sleeved on the drill sleeve, and the annular clamping portion 8-1 on the dust cap 8 is clamped into the dust cap annular groove 2-7 on the drill sleeve 2. In this embodiment, the dust cap 8 is made of plastic. The dust cap 8 plays a certain dustproof role, which is used to prevent dust from entering between the ferrule 1 and the drill sleeve 2 during the drilling process.

[0030] A locating pin insertion hole 2-6 is provided at a position corresponding to the first connection hole 2-1 on the drill sleeve 2, and the locating pin insertion hole 2-6 is used to insert the locating pin 10, and an O-ring groove 2-5 for installing the locating pin O-ring is provided on the periphery of the locating pin insertion hole 2-6. Among them, a through hole corresponding to the locating pin insertion hole 2-6 is provided on the connector of the impact wrench; when the connector of the impact wrench is inserted into the first connection hole 2-1 on the drill sleeve 2, the through hole on the connector corresponds to the locating pin insertion hole 2-6, and the locating pin 10 is inserted into the locating pin insertion hole 2-6, and the locating pin 10 penetrates the locating pin insertion hole 2-6 and the through hole at the same time, and the connection between the drill sleeve 2 and the connector is realized by the locating pin 10; after the locating pin 10 is inserted, the locating pin O-ring is installed in the O-ring groove 2-5, and the locating pin O-ring prevents the locating pin 10 from being separated from the locating pin insertion hole 2-6.

[0031] The utility model further includes a handle assembly 12, which includes a ferrule 12-1 for being sleeved on the ferrule 1, a locking bolt 12-3 being provided on the ferrule 12-1, and a handle 12-2 being provided on the ferrule 12-1. By installing the handle assembly 12 on the ferrule 1, an operator can hold the handle 12-2 during the drilling operation to improve the stability of the drill bit during the drilling process. The ferrule 12-1 is locked or loosened by the locking bolt 12-3, thereby facilitating the installation and removal of the ferrule 12-1.

[0032] The present utility model is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all those having the same or similar technical solutions as the present application fall within the protection scope of the present utility model.

Claims

1. An impact drill bit adapter, characterized in that: It comprises a ferrule and a drill sleeve. An inner convex ring is arranged in the ferrule. The drill sleeve passes through the inner convex ring. A first connecting hole and a second connecting hole are arranged in the drill sleeve. The second connecting hole is used to connect an impact drill bit. A steel ball restraining groove is arranged on one side of the second connecting hole. A steel ball is connected to the steel ball restraining groove. A retaining ring is connected to the drill sleeve, and a retaining ring gasket is provided between the retaining ring and one side of the inner convex ring; a steel ball restraining gasket is provided on the other side of the inner convex ring, the steel ball restraining gasket is sleeved on the drill sleeve, the steel ball restraining gasket is in contact with the outer surface of the steel ball, the steel ball is restrained in the steel ball restraining groove by the steel ball restraining gasket, and the steel ball moves within the length of the steel ball restraining groove; one side of the steel ball extends into the second connecting hole; a spring is provided between the steel ball restraining gasket and the drill sleeve.

2. The impact drill bit adapter according to claim 1, characterized in that: A clamping sleeve lower gasket is arranged between the steel ball restraining gasket and the other side of the inner convex ring.

3. The impact drill bit adapter according to claim 1, characterized in that: The drill sleeve is provided with a cut plane, the steel ball restraint groove is opened within the range where the cut plane is located, the steel ball restraint gasket is provided with an arc-shaped raised area, a through groove is opened on the arc-shaped raised area, and a groove plane is provided on one side of the through groove; the drill sleeve passes through the through groove on the steel ball restraint gasket, and the groove plane on the steel ball restraint gasket contacts the cut plane on the drill sleeve.

4. The impact drill bit adapter according to claim 1, characterized in that: One end of the drill bit is connected with a dust cap, and the dust cap is located between the drill sleeve and the clamping sleeve.

5. The impact drill bit adapter according to claim 4, characterized in that: An annular clamping portion is provided on the inner side of the dust cap, and a dust cap annular groove is provided on the outer side of one end of the drill sleeve. The dust cap is sleeved on the drill sleeve, and the annular clamping portion on the dust cap is clamped into the dust cap annular groove on the drill sleeve.

6. The impact drill bit adapter according to claim 1, characterized in that: A locating pin insertion hole is provided at a position on the drill sleeve corresponding to the first connecting hole, the locating pin insertion hole is used to insert the locating pin, and an O-ring groove for installing the locating pin O-ring is provided on the periphery of the locating pin insertion hole.

7. The impact drill bit adapter according to claim 1, characterized in that: It also includes a handle assembly, which includes a hoop for being sleeved on the clamping sleeve, a locking bolt is provided on the hoop, and a handle is provided on the hoop.

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