Detachable drilling device for electric tool

Abstract

The utility model discloses a detachable drilling device for an electric tool, which is used for being matched with a main machine part for use and comprises a lock head, a function switching ring, a left gearbox shell, a right gearbox shell, a switching ring and a fixing plate, the switching ring is sleeved on the left sides of the left gearbox shell and the right gearbox shell, and the fixing plate is covered on the left sides of the switching ring, the left gearbox shell and the right gearbox shell. The fixing plate is provided with an open groove, the open groove is provided with a connecting buckle, the middle of the connecting buckle is provided with a connecting column penetrating through the two sides, the two ends of the connecting column are connected with compressed springs, the outer side of the fixing plate is provided with a protrusion, the position, corresponding to the connecting buckle, in the switching ring is provided with an elastic structure, and the outer side, corresponding to the elastic structure, of the switching ring is provided with a visual locking hole and a visual unlocking hole. According to the device, the protrusions on the outer sides of the fixing plates are clamped with the corresponding grooves in the main machine, the switching ring is rotated, the elastic structure is driven to conduct locking, and then installation of the device can be completed; and the switching ring is rotated to drive the elastic structure to unlock, so that disassembly can be completed, and convenience is provided for carrying various electric tools.

Description

Technical Field

[0001] The utility model relates to the technical field related to electric tools, and in particular to a detachable drilling device for electric tools. Background Art

[0002] Electric tools mainly include a main unit and a transmission unit, and the main unit and the transmission unit are usually integrated into one. For example, electric drills, electric screwdrivers, drilling drills, etc. When you need to carry and use more than two tools, you need to carry both the main unit and the transmission unit of the two tools. At the same time, the weight of the tools themselves will bring a relatively large burden to the carrier.

[0003] Therefore, it is necessary to provide a detachable drilling device for an electric tool to overcome the above-mentioned defects. Utility Model Content

[0004] The main purpose of the utility model is to overcome the deficiencies in the prior art and provide a detachable drilling device for an electric tool to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution provided by the utility model is: a detachable drilling device for an electric tool, comprising a lock head, a function switching ring, a left tooth box shell, a right tooth box shell, a switching ring and a fixing plate arranged in sequence from right to left, the left tooth box shell and the right tooth box shell being fixed by a threaded connection, the function switching ring sleeve being arranged on the right side exterior of the left tooth box shell and the right tooth box shell, the switching ring sleeve being arranged on the left side exterior of the left tooth box shell and the right tooth box shell, the fixing plate being arranged on the left end portions of the switching ring, the left tooth box shell and the right tooth box shell by a threaded connection cover, the fixing plate being symmetrically provided with slots, the slots being provided with connecting buckles, the middle of the connecting buckles being provided with connecting columns running through both sides, compression springs being connected to both ends of the connecting columns, a number of protrusions being provided around the outer periphery of the outer side of the fixing plate, a loose structure being provided at a position corresponding to the connecting buckle in the switching ring, and a visible locking hole and a visible unlocking hole being provided on the outer side of the switching ring corresponding to the loose structure.

[0006] As a further solution of the utility model, it is characterized in that: an output shaft is provided in the left gear box shell and the right gear box shell, one end of the output shaft passes through the fixed plate, and the other end passes through the lock head, and the output shaft is sequentially sleeved with a first ball bearing, a steel ball, a drilling conversion gasket, an upper ratchet, a lower ratchet, a second ball bearing and a fixed sleeve from right to left.

[0007] As a further solution of the utility model, it is characterized in that: a plurality of the steel balls are provided, a steel ball gasket is provided on the outer side thereof, and the plurality of the steel balls are distributed in a circle inside the steel ball gasket.

[0008] As a further solution of the utility model, it is characterized in that a drilling return spring and a ratchet gasket are further provided between the upper ratchet, the lower ratchet and the output shaft.

[0009] As a further solution of the utility model, it is characterized in that the left side of the fixing sleeve abuts against the fixing plate.

[0010] As a further solution of the utility model, it is characterized in that: a gear buckle is provided on the inner side of the switching circle, and a first gear spring piece is provided on the inner side of the fixing plate, and the first gear spring piece is movably connected to the gear buckle.

[0011] As a further solution of the utility model, it is characterized in that: a second gear spring is provided between the function switching circle and the left gear box housing and the right gear box housing.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The present invention relates to a detachable drilling device for an electric tool, which is used in conjunction with a main machine part. It comprises a lock head, a function switching ring, a left tooth box shell, a right tooth box shell, a switching ring and a fixing plate which are arranged in sequence from right to left, the left tooth box shell and the right tooth box shell being fixed by a threaded connection, the function switching ring sleeve being arranged on the right side exterior of the left tooth box shell and the right tooth box shell, the switching ring sleeve being arranged on the left side exterior of the left tooth box shell and the right tooth box shell, the fixing plate being covered by a threaded connection cover and being arranged on the left side ends of the switching ring, the left tooth box shell and the right tooth box shell, the fixing plate being symmetrically provided with slots, the slots being provided with connecting buckles, the middle of the connecting buckles being provided with connecting columns which pass through both sides, compression springs being connected at both ends of the connecting columns, a plurality of protrusions being arranged around the outer side of the fixing plate, a loosening structure being arranged at a position corresponding to the connecting buckle in the switching ring, and a visible locking hole and a visible unlocking hole being arranged on the outer side of the switching ring corresponding to the loosening structure. When the detachable drilling device for an electric tool is used, a plurality of protrusions provided on the outer periphery of the fixing plate are engaged with a plurality of grooves of the fixing plate connecting plate on the main body, and then the switching ring is rotated to drive the loose structure to be locked, thereby completing its installation. If disassembly is required, the switching ring is rotated to drive the loose structure to be unlocked, and disassembly can be completed, which is very convenient; at the same time, it also provides convenience for carrying a variety of electric tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a complete exploded schematic diagram of a detachable drilling device for an electric tool of the utility model;

[0015] Figure 2 It is a schematic diagram of the longitudinal cross-section structure of a detachable drilling device for an electric tool according to the utility model;

[0016] Figure 3It is a three-dimensional structural schematic diagram of a detachable drilling device for an electric tool according to the utility model;

[0017] Figure 4 It is a three-dimensional structural schematic diagram of a switching ring of a detachable drilling device for an electric tool according to the utility model;

[0018] Figure 5 It is a three-dimensional structural schematic diagram of a fixing plate of a detachable drilling device for an electric tool according to the utility model;

[0019] Description of components in the legend: 1-output shaft; 2-first ball bearing; 3-steel ball gasket; 4-steel ball; 5-drilling conversion gasket; 6-upper ratchet; 7-ratchet gasket; 8-drilling return spring; 9-lower ratchet; 10-second ball bearing; 11-left gear box shell; 12-connecting buckle; 13-compression spring; 14-right gear box shell; 15-second gear spring; 17-function switching ring; 18-fixing sleeve; 19-first gear spring; 20-switching ring; 201-elastic structure; 202-visible locking hole; 203-visible unlocking hole; 204-gear buckle; 21-fixing plate; 211-protrusion; 22-screw; 23-output shaft. DETAILED DESCRIPTION

[0020] 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 without creative work are within the scope of protection of the utility model.

[0021] Example 1

[0022] Please see Figure 1-5In one embodiment of the utility model, a detachable drilling device for an electric tool includes a lock head 23, a function switching ring 17, a left gear box shell 11, a right gear box shell 14, a switching ring 20 and a fixing plate 21 arranged in sequence from right to left, the left gear box shell 11 and the right gear box shell 14 are fixed by threaded connection, the function switching ring 17 is sleeved on the right side of the left gear box shell 11 and the right gear box shell 14, the switching ring 20 is sleeved on the left side of the left gear box shell 11 and the right gear box shell 14, and the fixing plate 21 is connected by threaded connection. The connecting cover is arranged at the left end of the switching circle 20, the left gear box shell 11 and the right gear box shell 14. The fixing plate 21 is symmetrically provided with slots, and the slots are provided with connecting buckles 12. The connecting buckles 12 are provided with connecting columns running through both sides in the middle, and compression springs 13 are connected to both ends of the connecting columns. The outer periphery of the fixing plate 21 is provided with a plurality of protrusions 211. The position corresponding to the connecting buckle 12 in the switching circle 20 is provided with an elastic structure 201. The outer side of the switching circle 20 corresponding to the elastic structure 201 is provided with a visible locking hole 202 and a visible unlocking hole 203. When in use, the plurality of protrusions provided on the outer periphery of the fixing plate are engaged with the plurality of grooves of the fixing plate connecting plate on the main machine, and then the switching circle is rotated to drive the elastic structure to be locked, so as to complete its installation. If disassembly is required, the switching circle is rotated to drive the elastic structure to be unlocked, so as to complete the disassembly, which is very convenient; at the same time, it also provides convenience for carrying a variety of electric tools.

[0023] Based on the above embodiment, the output shaft 1 is provided in the left gear box housing 11 and the right gear box housing 14, one end of the output shaft 1 penetrates the fixed plate 21, and the other end penetrates the lock head 23, and the output shaft 1 is sequentially sleeved with the first ball bearing 2, the steel ball 4, the drilling conversion gasket 5, the upper ratchet 6, the lower ratchet 9, the second ball bearing 10 and the fixed sleeve 18 from right to left. The output shaft 1 and the first ball bearing 2, the steel ball 4, the drilling conversion gasket 5, the upper ratchet 6, the lower ratchet 9, the second ball bearing 10 and the fixed sleeve 18 constitute a transmission structure, which helps to transmit the power of the host part to the lock head 23, thereby improving the power and efficiency of drilling.

[0024] Based on the above embodiment, the steel balls 4 are provided in a plurality, and in order to facilitate the fixation of the steel balls 4 , a steel ball gasket 3 is provided on the outer side thereof, and the plurality of steel balls 4 are distributed in a circle in the steel ball gasket 3 .

[0025] Based on the above embodiment, a drilling reset spring 8 and a ratchet washer 7 are further provided between the upper ratchet 6 and the lower ratchet 9 and the output shaft 1. The drilling reset spring 8 helps to reset the upper ratchet 6 and the lower ratchet 9 after drilling, and the ratchet washer 7 helps to reduce the wear of the output shaft 1 caused by the drilling reset spring 8 when it is compressed or reset and stretched.

[0026] Based on the above embodiment, in order to prevent the fixing sleeve 18 from shaking, the left side of the fixing sleeve 18 abuts against the fixing plate 21 .

[0027] Based on the above embodiment, in order to facilitate the switching between unlocking or locking the two gears in the switching circle 20, a gear buckle 204 is provided on the inner side of the switching circle 20, and a first gear spring piece 19 is provided on the inner side of the fixed plate 21, and the first gear spring piece 19 is movably connected to the gear buckle 204.

[0028] Based on the above embodiment, in order to facilitate the switching between the general drilling and high-power drilling gears in the function switching circle 17 , a second gear spring piece 15 is provided between the function switching circle 17 and the left gear box housing 11 and the right gear box housing 14 .

[0029] The above detailed description is a specific description of a feasible embodiment of the present invention, but the embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or modification that does not deviate from the technical spirit of the present invention should be included in the patent scope of this case.

Claims

1. A detachable drilling device for an electric tool, Features: The invention comprises a lock head (23), a function switching ring (17), a left tooth box shell (11), a right tooth box shell (14), a switching ring (20) and a fixing plate (21) which are arranged in sequence from right to left. The left tooth box shell (11) and the right tooth box shell (14) are fixed by threaded connection. The function switching ring (17) is sleeved on the right side of the left tooth box shell (11) and the right tooth box shell (14). The switching ring (20) is sleeved on the left side of the left tooth box shell (11) and the right tooth box shell (14). The fixing plate (21) is sleeved on the switching ring (20), the left tooth box shell (11), and the right tooth box shell (14) by threaded connection. 11) and the left end of the right tooth box shell (14), the fixing plate (21) is symmetrically provided with slots, the slots are provided with connecting buckles (12), the middle of the connecting buckle (12) is provided with connecting columns running through both sides, and the two ends of the connecting columns are connected with compression springs (13), a plurality of protrusions (211) are provided on the outer periphery of the fixing plate (21), a tension structure (201) is provided at a position corresponding to the connecting buckle (12) in the switching circle (20), and a visible locking hole (202) and a visible unlocking hole (203) are provided on the outer side of the switching circle (20) corresponding to the tension structure (201).

2. The detachable drilling device for an electric tool according to claim 1, Features: An output shaft (1) is provided in the left gear box housing (11) and the right gear box housing (14), one end of the output shaft (1) passes through the fixing plate (21), and the other end passes through the lock head (23), and the output shaft (1) is sleeved with a first ball bearing (2), a steel ball (4), a drilling conversion gasket (5), an upper ratchet (6), a lower ratchet (9), a second ball bearing (10) and a fixing sleeve (18) in sequence from right to left.

3. The detachable drilling device for an electric tool according to claim 2, Features: A plurality of the steel balls (4) are provided, and a steel ball gasket (3) is provided on the outer side thereof. The plurality of the steel balls (4) are distributed in a circular shape inside the steel ball gasket (3).

4. The detachable drilling device for an electric tool according to claim 2, Features: A drilling return spring (8) and a ratchet washer (7) are also provided between the upper ratchet (6) and the lower ratchet (9) and the output shaft (1).

5. The detachable drilling device for a power tool according to claim 2, Features: The left side of the fixing sleeve (18) abuts against the fixing plate (21).

6. The detachable drilling device for a power tool according to claim 1, Features: A gear buckle is provided on the inner side of the switching ring (20), and a first gear spring sheet (19) is provided on the inner side of the fixing plate (21), wherein the first gear spring sheet (19) is movably connected to the gear buckle.

7. The detachable drilling device for a power tool according to claim 1, Features: A second gear position spring sheet (15) is provided between the function switching circle (17) and the left gear box housing (11) and the right gear box housing (14).

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