Connecting piece enabling electric drill to be used as electric hammer

Abstract

One end of a first transmission shaft is connected with a hammer head, a first bearing is connected with the first transmission shaft in a sleeved mode, a second transmission shaft sequentially penetrates through a second bearing, a fixed fluted disc and a movable fluted disc to be inserted into the other end of the first transmission shaft, and the first transmission shaft and the second transmission shaft rotate coaxially. The first transmission shaft and the second transmission shaft can axially and relatively move, the fixed fluted disc is fixed in the shell, the movable fluted disc abuts against the end face of the first transmission shaft, and the movable fluted disc and the second transmission shaft coaxially rotate. The movable fluted disc is in contact with the fixed fluted disc under the action of the first transmission shaft and then collides to get away from the first transmission shaft to generate impact force. Through the technical scheme that the movable fluted disc and the fixed fluted disc are in contact and then collide to be away from the direction of the first transmission shaft to generate impact force, the problem that rotation power output of an existing electric drill cannot provide reciprocating impact power is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a drill accessory, especially a connecting piece for enabling a drill to be used as an electric hammer. BACKGROUND

[0002] As a common electric tool, the drill is widely used in the assembly and disassembly of bolts and nuts. However, in actual use, the user often faces a problem: when temporary drilling or breaking operation is needed, a special electric hammer tool usually needs to be additionally equipped. This not only increases the carrying burden of the tool, but also leads to the reduction of the tool use efficiency and the increase of the cost. The existing market drill only provides rotary power, and the torque output by the power shaft is not enough to directly meet the demand of breaking operation, while the electric hammer can provide efficient reciprocating impact force through the built-in impact mechanism, which is the main tool type for breaking and drilling operation. However, the impact mechanism of the electric hammer is usually built-in and cannot be easily used with other tools, leading to the limitation of the tool function. Therefore, how to enable the drill to temporarily have the impact function of the electric hammer through a simple and economical structure design without changing the existing structure of the drill has become a technical problem to be solved at present. SUMMARY

[0003] The utility model discloses a connecting piece for enabling a drill to be used as an electric hammer, one end of the first transmission shaft is connected with the hammer head, the first bearing is sleeved with the first transmission shaft, the second transmission shaft passes through the second bearing, the fixed gear disc, the movable gear disc in proper order and inserts the other end of the first transmission shaft, the first transmission shaft and the second transmission shaft rotate coaxially, the first transmission shaft and the second transmission shaft can axially relatively displace, the fixed gear disc is fixed in the shell, the movable gear disc and the end face of the first transmission shaft are mutually resisted, the movable gear disc and the second transmission shaft rotate coaxially, and the movable gear disc is contacted with the fixed gear disc under the action of the first transmission shaft and is impacted to generate impact force away from the first transmission shaft direction. The utility model discloses a movable gear disc and a fixed gear disc are contacted and impacted to generate impact force away from the first transmission shaft direction technical scheme and solve the problem that the rotary power output of the existing drill cannot provide a reciprocating impact power.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] The utility model provides a connecting piece that makes electric drill can use as electric hammer, it includes: first transmission shaft, press bush, second transmission shaft, shell, first bearing, second bearing, fixed gear disc, movable gear disc, gasket, first spring, second spring, one end of first transmission shaft is connected with hammer head, first bearing is connected with first transmission shaft, second transmission shaft inserts the other end of first transmission shaft in proper order through second bearing, fixed gear disc, movable gear disc, first transmission shaft and second transmission shaft rotate coaxially, first transmission shaft and second transmission shaft can axially relative displacement, fixed gear disc is fixed in the shell, movable gear disc and the end surface of first transmission shaft are each other and stop, movable gear disc and second transmission shaft rotate coaxially, and movable gear disc and fixed gear disc contact after the impact under the action of first transmission shaft and generate impact force to the first transmission shaft direction far away.

[0006] Further setting, one end of first transmission shaft is provided with hammer head connecting hole, the side wall of hammer head connecting hole is provided with clamping bead hole, and clamping bead hole is provided with clamping bead between the inner wall of press bush, first transmission shaft is provided with clamping spring ring, first spring is arranged between clamping spring ring and the clamping spring step of press bush, and the other end of first transmission shaft is provided with transmission hole, and transmission hole is connected with the transmission connection position of second transmission shaft and bushing.

[0007] Further setting, the press bush is provided with unlocking groove, and when the press bush is moved to the position corresponding to the unlocking groove and the clamping bead is moved into the unlocking groove, the clamping bead cannot clamp the hammer head.

[0008] Further setting, the electric drill connecting position of second transmission shaft is connected with electric drill.

[0009] Further setting, the shell is provided with: first bearing fixing position, second bearing fixing position, gear disc fixing position and handle fixing hole, the first bearing is arranged at the first bearing fixing position, the second bearing is arranged at the second bearing fixing position, the fixed gear disc is arranged at the gear disc fixing position, and the handle fixing hole is used for connecting the handle.

[0010] Further setting, the gasket is connected with the first transmission shaft, and the second spring is arranged between the gasket and the clamping spring ring

[0011] The utility model discloses a movable gear disc and fixed gear disc contact after the impact will generate the impact force to the first transmission shaft direction far away technical scheme and solve the problem that the existing electric drill rotary power output cannot provide a reciprocating impact power. ACCURACY OF DRAWINGS

[0012] Figure 1 It is the perspective drawing of the utility model;

[0013] Figure 2 It is the sectional view of the utility model;

[0014] In the drawing: first transmission shaft 1, hammer head connecting hole 11, clamping spring ring 12, clamping bead hole 13, clamping bead 14, transmission hole 15,

[0015] pressing sleeve 2, clamping spring step 21, unlocking groove 22, first spring 23,

[0016] second transmission shaft 3, electric drill connecting position 31, transmission connecting position 32,

[0017] housing 4, first bearing fixing position 41, second bearing fixing position 42, tooth disc fixing position 43, handle fixing hole 44,

[0018] first bearing 5, second bearing 6, fixed tooth disc 7, movable tooth disc 8, gasket 9, second spring 10. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned purpose, features and advantages of the utility model more apparent, obvious and easy to understand, the specific embodiments of the utility model will be described in detail below with reference to the drawings.

[0020] In the following description, a lot of specific details are set forth in order to give a thorough understanding of the utility model, but the utility model can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the connotation of the utility model, therefore the utility model is not limited by the specific embodiments disclosed below.

[0021] Secondly, the utility model is described in detail in combination with the schematic diagram, when the embodiments of the utility model are described in detail, for the convenience of description, the sectional view of the device structure will be partially enlarged without the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the utility model herein. In addition, three-dimensional spatial dimensions of length, width and depth should be included in actual manufacture.

[0022] In order to make the purpose, technical scheme and advantages of the utility model more clear, the embodiments of the utility model will be described in further detail below in combination with the drawings.

[0023] The utility model discloses a connecting piece that makes electric drill can be used as electric hammer, as shown in Figure 1 and Figure 2 As shown, comprising: first transmission shaft 1, pressing sleeve 2, second transmission shaft 3, housing 4, first bearing 5, second bearing 6, fixed tooth disc 7, movable tooth disc 8, gasket 9, first spring 23, second spring 10.

[0024] One end of the first transmission shaft 1 is connected with the hammer head through the hammer head connecting hole 11.

[0025] The other end of the first transmission shaft 1 is provided with a transmission hole 15, which is sleeved with the transmission connecting position 32 of the second transmission shaft 3, so that the coaxial rotation and transmission of the two shafts are realized.

[0026] One end of the second transmission shaft 3 is provided with a drill connecting position 31, which is used for being connected with the power output end of the drill; the other end is inserted into the transmission hole 15 of the first transmission shaft 1 after sequentially penetrating through the second bearing 6, the fixed gear disc 7 and the movable gear disc 8.

[0027] When the movable gear disc 8 is contacted with the fixed gear disc 7 under the pushing of the first transmission shaft 1, the impact is generated, and the movable gear disc 8 is away from the fixed gear disc 7 under the action of the rebound force, so that the reciprocating impact force is generated.

[0028] The gasket 9 is sleeved with the first transmission shaft 1, and the second spring 10 is arranged between the gasket 9 and the snap spring ring 12, which is used for buffering the reciprocating motion of the first transmission shaft 1, reducing the abrasion of the transmission mechanism and prolonging the service life.

[0029] The first bearing 5 is fixed at the first bearing fixing position 41, the second bearing 6 is fixed at the second bearing fixing position 42, and the fixed gear disc 7 is installed at the gear disc fixing position 43.

[0030] When the user needs to convert the drill into the electric hammer, the connecting piece is only fixed to the output shaft of the drill through the drill connecting position 31 of the second transmission shaft 3, and the hammer head is assembled.

[0031] In summary, the drill is provided with the function of the electric hammer through the transmission mechanism and the structural configuration designed skillfully, and the drill has the remarkable practicability and economy.

[0032] Although the utility model has been described above with reference to the embodiments, various modifications can be made to it and equivalent components can be substituted for those therein without departing from the scope of the utility model. In particular, each of the features disclosed in the embodiments of the utility model can be used in combination with any other feature in any way, provided that there is no structural conflict. The combinations of these features are not exhaustively described in the specification merely for the sake of brevity and resource conservation. Therefore, the utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A connection for enabling an electric drill to be used as an electric hammer, characterized in that, The utility model relates to a hammer drill, which comprises: A first transmission shaft (1), a pressing sleeve (2), a second transmission shaft (3), a shell (4), a first bearing (5), a second bearing (6), a fixed gear disc (7), a movable gear disc (8), a gasket (9), a first spring (23), and a second spring (10), wherein one end of the first transmission shaft (1) is connected with a hammer head, the first bearing (5) is sleeved with the first transmission shaft (1), the second transmission shaft (3) is inserted into the other end of the first transmission shaft (1) in sequence through the second bearing (6), the fixed gear disc (7), and the movable gear disc (8), the first transmission shaft (1) and the second transmission shaft (3) rotate coaxially, the first transmission shaft (1) and the second transmission shaft (3) can axially relatively displace, the fixed gear disc (7) is fixed in the shell (4), the movable gear disc (8) and the end face of the first transmission shaft (1) abut against each other, the movable gear disc (8) rotates coaxially with the second transmission shaft (3), and the movable gear disc (8) is in contact with the fixed gear disc (7) and is impacted to generate an impact force away from the first transmission shaft (1) under the action of the first transmission shaft (1).

2. The attachment of claim 1, wherein, One end of the first transmission shaft (1) is provided with a hammer head connecting hole (11), the side wall of the hammer head connecting hole (11) is provided with a clamping bead hole (13), the clamping bead hole (13) and the inner wall of the pressing sleeve (2) are provided with a clamping bead (14), the first transmission shaft (1) is provided with a clamping spring ring (12), the first spring (23) is arranged between the clamping spring ring (12) and the clamping spring step (21) of the pressing sleeve (2), and the other end of the first transmission shaft (1) is provided with a transmission hole (15) which is sleeved with a transmission connecting position (32) of the second transmission shaft (3).

3. The attachment of claim 2, wherein, The pressing sleeve (2) is provided with an unlocking groove (22), and the clamping bead (14) is moved to the unlocking groove (22) when the pressing sleeve (2) is moved to a position corresponding to the unlocking groove (22) and the clamping bead hole (13), so that the hammer head cannot be clamped.

4. The attachment of claim 3, wherein, The electric drill connecting position (31) of the second transmission shaft (3) is connected with an electric drill.

5. The attachment of claim 4, wherein, The shell (4) is provided with: a first bearing fixing position (41), a second bearing fixing position (42), a gear disc fixing position (43), and a handle fixing hole (44), wherein the first bearing (5) is arranged at the first bearing fixing position (41), the second bearing (6) is arranged at the second bearing fixing position (42), the fixed gear disc (7) is arranged at the gear disc fixing position (43), and the handle fixing hole (44) is used for connecting a handle.

6. The attachment of claim 5, wherein, The gasket (9) is sleeved with the first transmission shaft (1), and the second spring (10) is arranged between the gasket (9) and the clamping spring ring (12).

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