阅读说明：本技术 一种用于电动工具的驱动机构 (Driving mechanism for electric tool ) 是由 陈华斌 于 2021-07-09 设计创作，主要内容包括：本发明提供了一种用于电动工具的驱动机构,属于电动工具技术领域。它解决了现有电动工具智能化程度低且精准度低的问题。本用于电动工具的驱动机构,包括电机、减速器和壳体,减速器与所述壳体之间设置有固定套,固定套内设置有与减速器相连接且配合传动的齿套,壳体内设置有与电动工具相连接的推杆组件,推杆组件与减速器之间设置有用于控制推杆组件运行的丝杆传动机构,丝杆传动机构的两端分别伸入所述壳体和固定套内,并分别与所述推杆组件和齿套相连接,齿套内设置有与其相啮合且与丝杆传动机构相连接的齿轮,该丝杆传动机构通过与电机、减速器、齿套和齿轮配合将旋转运动转化直线运动,从而控制推杆组件带动电动工具运行。本发明具有智能化程度高且精准度高的优点。(The invention provides a driving mechanism for an electric tool, and belongs to the technical field of electric tools. It has solved the low problem of just the precision is low of current electric tool intelligent degree. This a actuating mechanism for electric tool, including motor, reduction gear and casing, the reduction gear with be provided with fixed cover between the casing, be provided with in the fixed cover and be connected and the driven tooth cover of cooperation with the reduction gear, be provided with the push rod subassembly that is connected with electric tool in the casing, be provided with the lead screw drive mechanism who is used for controlling push rod subassembly operation between push rod subassembly and the reduction gear, lead screw drive mechanism's both ends stretch into respectively in casing and the fixed cover, and respectively with push rod subassembly and tooth cover are connected, be provided with in the tooth cover rather than meshing and the gear that is connected with lead screw drive mechanism, this lead screw drive mechanism through with motor, reduction gear, tooth cover and gear cooperation with rotary motion conversion linear motion to control push rod subassembly drives electric tool operation. The invention has the advantages of high intelligent degree and high precision.)

1. A driving mechanism for an electric tool comprises a motor (1), a speed reducer (2) and a shell (3), and is characterized in that a fixed sleeve (4) is arranged between the speed reducer (2) and the shell (3), a gear sleeve (5) which is connected with the speed reducer (2) and is matched with the speed reducer for transmission is arranged in the fixed sleeve (4), a push rod component (6) which is connected with the electric tool is arranged in the shell (3), a screw rod transmission mechanism (7) which is used for controlling the operation of the push rod component (6) is arranged between the push rod component (6) and the speed reducer (2), two ends of the screw rod transmission mechanism (7) respectively extend into the shell (3) and the fixed sleeve (4) and are respectively connected with the push rod component (6) and the gear sleeve (5), a gear (8) which is meshed with the screw rod transmission mechanism and is connected with the screw rod transmission mechanism (7) is arranged in the gear sleeve (5), the screw rod transmission mechanism (7) converts the rotary motion into linear motion by matching with the motor (1), the speed reducer (2), the gear sleeve (5) and the gear (8), thereby controlling the push rod assembly (6) to drive the electric tool to operate.

2. The driving mechanism for an electric tool according to claim 1, wherein the lead screw transmission assembly comprises a transmission lead screw (9) and a lead screw nut (10), both ends of the transmission lead screw (9) are respectively connected with the gear (8) and the push rod assembly (6), the lead screw nut (10) is arranged on the transmission lead screw (9) and is located at the joint of the housing (3) and the fixed sleeve (4), and one end of the lead screw nut (10) located in the housing (3) is fixedly connected with the housing (3) through a thread.

3. A drive mechanism for a power tool according to claim 1, wherein said cover (4) is formed separately from or integrally with said housing (3).

4. The driving mechanism for the electric tool according to claim 1, wherein the push rod assembly (6) comprises a push rod (11), a bearing sleeve (12) and a bearing unit (13), the push rod (11) is arranged at the front end of the bearing sleeve (12) and is fixedly connected with the bearing sleeve, an annular bulge (14) which is radially and inwardly bulged and is used for the transmission screw rod (9) to stretch into is arranged on the inner peripheral wall of the rear end of the bearing sleeve (12) close to the transmission screw rod (9), the bearing unit (13) is sleeved on the front end of the transmission screw rod (9) stretching into the bearing sleeve (12), and the transmission screw rod (9) is rotatably connected with the bearing sleeve (12), so that the rotary motion of the push rod is converted into linear motion.

5. The drive mechanism for an electric tool according to claim 1, wherein the front end of the drive screw (9) extending into the bearing sleeve (12) is provided with a snap spring (15) which is clamped with the drive screw and used for limiting the position of the bearing unit (13).

6. The driving mechanism for the electric tool according to claim 1, wherein a guide key (16) is disposed between the bearing sleeve (12) and the housing (3), a guide groove (17) disposed along a length direction of the bearing sleeve (12) and engaged with the guide key (16) is formed in the bearing sleeve (12), a length of the guide groove (17) is smaller than a length of the guide key (16), and the guide groove (17) axially extends to the push rod.

7. The driving mechanism for an electric tool according to claim 1, wherein the bearing unit (13) is composed of a bearing seat (18) and a plurality of plane bearings (19), the plurality of plane bearings (19) are even and symmetrically sleeved on the bearing seat (18), and both end faces of the bearing seat (18) are provided with mounting convex rings (20) which are axially and outwardly convex and used for mounting the corresponding plane bearings (19).

8. The driving mechanism for the electric tool according to claim 1, wherein the outer peripheral wall of the housing (3) is provided with a hall sensor (21) fixedly connected with the outer peripheral wall and connected with the motor (1) for controlling the intelligent operation of the motor (1), and the side wall of the guide sleeve corresponding to the position of the hall sensor (21) is provided with a magnet (22) matched with the side wall.

Technical Field

The invention belongs to the technical field of electric tools, and relates to a driving mechanism for an electric tool.

Background

Electric tools, such as crimping pliers, shearing pliers and hydraulic pliers, are necessary tools for conducting wire connection crimping or shearing in the construction of on-line road foundation and line maintenance in the power industry. The clamp comprises a shell, a clamp body and a motor, wherein the clamp body is composed of a fixed clamp and a movable clamp, the fixed clamp is generally arranged with the shell as a whole, the movable clamp is arranged to control crimping or shearing through the motor, and the clamp body cannot be replaced and cannot meet the use requirement of a user.

When the manual pressure-sensitive adhesive tape is used, the manual pressure-sensitive adhesive tape generally works by holding the shell by hands, the control mode can be divided into manual operation, hydraulic operation and electric operation, the intelligent degree of the hydraulic operation and the electric operation is not high, the manual operation is required, the control precision of the manual pressure-sensitive adhesive tape is different when the manual pressure-sensitive adhesive tape is used, a circuit needing pressure welding is easy to damage, and the precision requirement of a user cannot be met.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provide a driving mechanism which is replaceable and has a stable structure, high intelligence degree and improved operation precision for an electric tool.

The purpose of the invention can be realized by the following technical scheme: a driving mechanism for an electric tool, comprising a motor, a reducer and a housing, characterized in that, a fixed sleeve is arranged between the speed reducer and the shell, a gear sleeve which is connected with the speed reducer and is in matched transmission is arranged in the fixed sleeve, a push rod component connected with the electric tool is arranged in the shell, a screw rod transmission mechanism used for controlling the operation of the push rod component is arranged between the push rod component and the speed reducer, two ends of the screw rod transmission mechanism respectively extend into the shell and the fixed sleeve, and are respectively connected with the push rod component and the gear sleeve, a gear which is meshed with the gear sleeve and is connected with the screw rod transmission mechanism is arranged in the gear sleeve, the screw rod transmission mechanism converts the rotary motion into linear motion by matching with the motor, the speed reducer, the gear sleeve and the gear, thereby controlling the push rod assembly to drive the electric tool to operate.

In foretell a actuating mechanism for electric tool, the screw drive subassembly constitute by transmission lead screw and screw-nut, transmission lead screw both ends respectively with gear and push rod subassembly are connected, screw-nut set up in on the transmission lead screw, and be located the junction of casing and fixed cover, screw-nut be located the casing one end with the casing links firmly mutually through the screw thread.

In the above-mentioned driving mechanism for an electric power tool, the outer peripheral wall of the housing at the front end is provided with an external thread.

In the above driving mechanism for an electric tool, the fixing sleeve and the housing are separately or integrally formed.

In foretell a actuating mechanism for electric tool, push rod subassembly constitute by ejector pin, bearing housing and bearing unit, the ejector pin set up in the front end of bearing housing and link firmly rather than mutually, the bearing housing be close to be provided with radial inside arch and supply the annular bellying that the transmission lead screw stretches into on the rear end internal perisporium of transmission lead screw, the bearing unit cover locate the transmission lead screw stretches into on the front end in the bearing housing to make the transmission lead screw with bearing housing looks swivelling joint, thereby turn into linear motion with the rotary motion of push rod.

In the above driving mechanism for an electric tool, the front end of the transmission screw rod extending into the bearing sleeve is provided with a clamp spring which is clamped with the transmission screw rod and used for limiting the position of the bearing unit.

In the above driving mechanism for an electric tool, a guide key is disposed between the bearing sleeve and the housing, a guide groove disposed along a length direction of the bearing sleeve and matched with the guide key is disposed on the bearing sleeve, a length of the guide groove is smaller than a length of the guide key, and the guide groove axially extends to the push rod.

In the above-mentioned actuating mechanism for electric tool, the bearing unit constitute by bearing frame and a plurality of plane bearing, a plurality of plane bearing is the even number, and the symmetry cover is established on the bearing frame, the both ends face of bearing frame all be provided with the outside protruding installation bulge loop that just supplies corresponding plane bearing installation of axial.

In the above driving mechanism for an electric tool, the outer peripheral wall of the housing is provided with a hall sensor which is fixedly connected with the outer peripheral wall of the housing, is connected with the motor and is used for controlling the intelligent operation of the motor, and the side wall of the guide sleeve, which is positioned at the position corresponding to the hall sensor, is provided with a magnet matched with the guide sleeve.

Compared with the prior art, the driving mechanism for the electric tool has the following advantages:

1. the outer peripheral wall of the shell at the front end is provided with external threads, and the external threads can enable the driving mechanism to be assembled with a plurality of types of crimping pliers bodies or shearing pliers bodies;

2. the bearing unit sleeve is arranged at the front end of the transmission screw rod extending into the bearing sleeve, the transmission screw rod is connected with the bearing sleeve in a rotating mode, so that the rotating motion of the push rod is converted into linear motion, the outer peripheral wall of the shell is fixedly connected with the shell, the shell is connected with the motor and used for controlling the Hall sensor which intelligently operates, the guide sleeve is arranged on the side wall of the position corresponding to the Hall sensor and provided with a magnet matched with the guide sleeve, the crimping precision is improved through intelligent control, and meanwhile the operation difficulty of a user in operation is reduced.

Drawings

Fig. 1 is a schematic sectional view of the drive mechanism for a power tool.

In the figure, 1, a motor; 2. a speed reducer; 3. a housing; 4. fixing a sleeve; 5. a gear sleeve; 6. a push rod assembly; 7. a screw drive mechanism; 8. a gear; 9. a transmission screw rod; 10. a feed screw nut; 11. a top rod; 12. a bearing housing; 13. a bearing unit; 14. an annular boss; 15. a clamp spring; 16. a guide key; 17. a guide groove; 18. a bearing seat; 19. a flat bearing; 20. installing a convex ring; 21. a Hall sensor; 22. and a magnet.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in figure 1, the driving mechanism for the electric tool comprises a motor with an output end, a speed reducer with an input end and a shell, wherein the motor, the speed reducer and the shell are coaxially arranged, a fixed sleeve is arranged between the speed reducer and the shell, a gear sleeve which is connected with the speed reducer and is matched with the speed reducer for transmission is arranged in the fixed sleeve, an input gear ring end which is meshed with the input end is arranged at the connecting end of the gear sleeve and the speed reducer, a push rod component which is connected with the electric tool is arranged in the shell, a screw rod transmission mechanism which is used for controlling the operation of the push rod component so as to realize the operation of the electric tool is arranged between the push rod component and the speed reducer, two ends of the screw rod transmission mechanism respectively extend into the shell and the fixed sleeve and are respectively connected with the push rod component and the gear sleeve, a gear which is meshed with the gear and is connected with the screw rod transmission mechanism is arranged in the gear sleeve, and a connecting flange part which protrudes outwards in the radial direction is arranged on the peripheral wall of the connecting end of the fixed sleeve and the speed reducer, the screw rod transmission mechanism is coaxially arranged and connected with the shell, a convex ring part which is radially and inwards protruded and is in sliding fit with the gear sleeve is arranged on the inner circumferential wall of the fixed sleeve, a gap for preventing abrasion during sliding is reserved between the inner circumferential wall of the fixed sleeve and the outer circumferential wall of the gear sleeve through the convex ring part, the convex ring part is preferably arranged at the front end part of the gear sleeve, the screw rod transmission mechanism converts rotary motion into linear motion through matching with a motor, a speed reducer, the gear sleeve and a gear so as to control a push rod component to drive an electric tool to operate, the screw rod transmission component consists of a transmission screw rod and a screw rod nut, two ends of the transmission screw rod are respectively connected with the gear and the push rod component, the screw rod nut is arranged on the transmission screw rod and is positioned at the joint of the shell and the fixed sleeve, one end of the screw rod nut, which is positioned in the shell, is fixedly connected with the shell through threads, the outer peripheral wall of the joint of the shell and the fixed sleeve of the screw nut is provided with a convex part which protrudes outwards in the radial direction, the push rod component consists of a push rod, a bearing sleeve and a bearing unit, the push rod is arranged at the front end of the bearing sleeve and is fixedly connected with the bearing sleeve, the fixed rod and the bearing sleeve are coaxially arranged through matching with the shell, the bearing unit is arranged in the bearing sleeve, the inner peripheral wall of the rear end of the bearing sleeve, which is close to the transmission screw rod, is provided with an annular convex part which protrudes inwards in the radial direction and is used for the transmission screw rod to extend into and limit the position of the bearing unit, the bearing unit is sleeved at the front end of the transmission screw rod extending into the bearing sleeve and enables the transmission screw rod to be rotationally connected with the bearing sleeve, so that the rotary motion of the push rod is converted into linear motion, the front end of the transmission screw rod extending into the bearing sleeve is provided with a snap spring which is clamped with the transmission screw rod and is used for limiting the position of the bearing unit, and a guide key is arranged between the outer peripheral wall of the bearing sleeve and the inner peripheral wall of the corresponding shell, this guide key sets up in the casing and links firmly rather than mutually, and the terminal surface that the guide key is connected with the casing is provided with the embedding portion of embedding in the casing, sets up the mounting groove that supplies embedding portion embedding installation on the casing, and the mounting groove makes the casing inside and outside communicate mutually to through the initial position of the cooperation restriction guide key of installation mistake and embedding portion, set up on the bearing housing along its length direction setting and with guide key looks sliding fit's guide way, the length of this guide way is less than the length of guide key, and this guide way axial extends to on the push rod, the bearing unit comprises bearing frame and a plurality of plane bearing, a plurality of plane bearing is the dual, and the symmetrical cover is established on the bearing frame, the both ends face of bearing frame all is provided with the outside protruding installation bulge ring that just supplies corresponding plane bearing to install of axial.

In further detail, in order to facilitate the replacement of different electric tools and meet the use requirements of users, the outer peripheral wall of the shell at the front end is provided with an external thread.

As the preferred structure, the fixed sleeve and the shell are arranged in a split way or integrally.

In order to further improve the control precision, the peripheral wall of the shell at the position of the guide key is fixedly connected with the shell and is connected with the motor, a Hall sensor for controlling the intelligent operation of the motor, a magnet matched with the guiding sleeve is arranged on the side wall of the guiding sleeve at the position corresponding to the position of the Hall sensor, the Hall sensor is used for detecting the pressing force when the electric tool runs, when the Hall sensor detects that the pressing force reaches a when the electric tool runs, the Hall sensor realizes the return of the bearing sleeve, the push rod and the electric tool by controlling the motor, when the magnet moves to the Hall sensor through the bearing sleeve, the Hall sensor detects that the zero point stops running, the magnet can be arranged on the bearing seat opposite to the guide groove, the motor can be provided with a control panel, for observing pressure and travel during operation and can use programmed input and control of the hall sensor.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.