Quick-change type tool head locking device of electric tool

Abstract

The utility model provides a quick-change type tool head locking device of an electric tool, which relates to the technical field of tool replacement, and comprises a fixed quick-change shell, the inner side of the fixed quick-change shell is fixedly connected with a telescopic rod, and the quick-change type tool head locking device of the electric tool drives a fixed disc, a limiting rod and a clamping block to rotate by rotating a pull ring during replacement. Under the pushing of a reset spring, a limiting rod is separated from a limiting clamping groove, a movable quick-change shell is pulled, and a telescopic rod drives the movable quick-change shell to move to fix the quick-change shell, so that the operation space is increased, after replacement is completed, the movable quick-change shell is pushed to insert a connecting plate into a connecting groove, and a pull ring is pressed to drive the limiting rod to be inserted into the limiting clamping groove; and the pull ring is rotated to drive the limiting rod and the clamping block to rotate, so that the clamping block is attached to the clamping groove, the connection plate and the movable quick-change shell are fixed, the surrounding operation space is increased when the tool head is replaced, and the replacement convenience is improved.

Description

Technical Field

[0001] This utility model relates to a quick-change locking device, specifically a quick-change tool head locking device for power tools, belonging to the field of tool replacement technology. Background Technology

[0002] Multiple power tools can be configured on an automated production line. Different processing tools are configured according to different workstations and different processing steps. Therefore, the output shaft ends of the power tools are equipped with quick-change tools to facilitate the replacement of tool heads according to different needs.

[0003] When replacing the tool head, the locking device is fixed on the power output shaft of the power tool, which results in a small operating space. This limited space makes the replacement inconvenient and time-consuming, reducing efficiency.

[0004] Therefore, a quick-change tool head locking device for power tools is proposed here. Utility Model Content

[0005] This utility model proposes a quick-change tool head locking device for power tools to solve the problem of inconvenient tool replacement operation caused by the small operating space in the prior art.

[0006] This utility model is achieved through the following technical solution: a quick-change tool head locking device for power tools, including a fixed quick-change shell, wherein a telescopic rod is fixedly connected to the inner side of the fixed quick-change shell, characterized in that: a movable quick-change shell is fixedly connected to the end of the telescopic rod;

[0007] The fixed quick-change shell has a connecting groove on its outer side, and the movable quick-change shell has a connecting plate fixedly connected to its outer side. A locking mechanism is fixedly connected to the inner side of the connecting groove. A locking groove is opened on the inner side of the locking mechanism. A limit rod is slidably connected to the inner side of the locking mechanism. A fixing plate is fixedly connected to the end of the limit rod. A locking block is fixedly connected to the outer side of the limit rod.

[0008] Furthermore, both the fixed quick-change shell and the movable quick-change shell have mounting cavities on their outer sides. A miniature forward and reverse motor is fixedly connected to the inner side of the mounting cavity. A rotating rod is fixedly connected to the end of the power output shaft of the miniature forward and reverse motor. A first helical gear is fixedly connected to the top of the rotating rod. A double-threaded rod is rotatably connected to the inner side of the mounting cavity. A second helical gear is fixedly connected to the end of the double-threaded rod. A movable seat is screwed to the outer side of the double-threaded rod. A positioning rod is fixedly connected between the inner sides of the fixed quick-change shell and the movable quick-change shell. A positioning slider is slidably connected to the outer side of the positioning rod. A clamp is fixedly connected between the positioning slider and the outer side of the movable seat.

[0009] Furthermore, a limiting groove is provided on the outer side of the connecting plate. When the connecting plate is inserted into the connecting groove, the limiting groove and the limiting rod are located on the same axis.

[0010] Furthermore, a return spring is fixedly connected to the outer side of the locking mechanism, the return spring is fixedly connected to the fixed plate, and a pull ring is fixedly connected to the outer side of the fixed plate.

[0011] Furthermore, control switches are embedded on the outer sides of both the fixed quick-change housing and the movable quick-change housing, and the control switches are connected to the wires of the miniature forward and reverse motor via wires.

[0012] Furthermore, the first helical gear meshes with the second helical gear, an anti-slip pad is fixedly connected to the outer side of the clamp, and a protective shell is installed on the inner side of the mounting cavity.

[0013] This utility model provides a quick-change tool head locking device for power tools, which has the following beneficial effects:

[0014] 1. This power tool quick-change tool head locking device, during replacement, rotates the pull ring to drive the fixed plate, limit rod, and locking block to rotate. Under the push of the return spring, the limit rod disengages from the limit slot, pulling the movable quick-change housing. This causes the telescopic rod to move the movable quick-change housing, thus fixing the quick-change housing and increasing the operating space. After replacement, push the movable quick-change housing to insert the connecting plate into the connecting groove. Press the pull ring to drive the limit rod into the limit slot. Rotating the pull ring causes the limit rod and locking block to rotate, making the locking block fit into the locking groove, thus fixing the connecting plate and the movable quick-change housing. This increases the operating space around the tool head during replacement and improves the convenience of replacement.

[0015] 2. This quick-change tool head locking device for power tools starts a miniature forward and reverse motor by pressing a control switch, which in turn drives the rotating rod and the first helical gear to rotate. This causes the first helical gear to drive the second helical gear and the double-ended threaded rod to rotate, which in turn drives the moving seat to move. Guided by the positioning rod and the positioning slider, the clamp can move left and right, thereby fixing the tool head and the output shaft of the power tool. It can be adjusted according to different power tools and tool head sizes, making it easy to operate and allowing for quick replacement, thus improving replacement efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the fixed quick-change shell of this utility model;

[0018] Figure 3This is a cross-sectional view of the locking mechanism in this utility model.

[0019] Figure 4 This is a cross-sectional view of the movable quick-change shell in this utility model.

[0020] Explanation of reference numerals in the attached figures

[0021] 100. Fixed quick-change housing; 110. Telescopic rod; 111. Movable quick-change housing; 120. Connecting groove; 121. Connecting plate; 122. Limiting slot; 130. Locking mechanism; 131. Positioning slot; 132. Limiting rod; 133. Fixed plate; 134. Positioning block; 135. Return spring; 136. Pull ring; 140. Control switch;

[0022] 200. Mounting cavity; 210. Miniature forward and reverse motor; 211. Rotating rod; 212. First helical gear; 220. Double-ended threaded rod; 221. Second helical gear; 222. Moving seat; 230. Positioning rod; 231. Positioning slider; 232. Clamp; 233. Anti-slip pad; 240. Protective shell. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this application.

[0024] Please see Figures 1-2 This utility model provides a quick-change tool head locking device for power tools, including a fixed quick-change housing 100, and a telescopic rod 110 fixedly connected to the inner side of the fixed quick-change housing 100. The feature is that a movable quick-change housing 111 is fixedly connected to the end of the telescopic rod 110.

[0025] Please refer to this carefully. Figure 1 , Figure 2 and Figure 3The outer side of the fixed quick-change housing 100 has a connecting groove 120. The outer side of the movable quick-change housing 111 is fixedly connected to a connecting plate 121. The inner side of the connecting groove 120 is fixedly connected to a locking mechanism 130. The inner side of the locking mechanism 130 has a locking groove 131. The inner side of the locking mechanism 130 is slidably connected to a limit rod 132. The end of the limit rod 132 is fixedly connected to a fixing plate 133. The outer side of the limit rod 132 is fixedly connected to a locking block 134. The connecting plate 121... A limiting slot 122 is opened on the outer side. When the connecting plate 121 is inserted into the connecting slot 120, the limiting slot 122 and the limiting rod 132 are located on the same axis. A return spring 135 is fixedly connected to the outer side of the locking mechanism 130. The return spring 135 is fixedly connected to the fixed plate 133. A pull ring 136 is fixedly connected to the outer side of the fixed plate 133. A control switch 140 is embedded in the outer side of both the fixed quick-change shell 100 and the movable quick-change shell 111. The control switch 140 is open to... The wire is connected to the wire of the miniature forward and reverse motor 210. The control switch 140 is model LA10-2K. During replacement, rotating the pull ring 136 drives the fixed plate 133, the limit rod 132, and the locking block 134 to rotate. Under the push of the return spring 135, the limit rod 132 disengages from the limit slot 122, pulling the movable quick-change shell 111. This causes the telescopic rod 110 to move the movable quick-change shell 111, which in turn moves the fixed quick-change shell 100, thereby increasing the ease of operation. After the tool head is replaced, push the movable quick-change housing 111 to insert the connecting plate 121 into the connecting groove 120. Press the pull ring 136 to drive the limiting rod 132 into the limiting slot 122. Rotate the pull ring 136 to drive the limiting rod 132 and the locking block 134 to rotate, so that the locking block 134 fits into the locking groove 131, thereby completing the fixation of the connecting plate 121 and the movable quick-change housing 111. This increases the operating space around the tool head when changing it and improves the convenience of replacement.

[0026] Please refer to this carefully. Figure 1 , Figure 2 and Figure 4Both the fixed quick-change housing 100 and the movable quick-change housing 111 have mounting cavities 200 on their outer sides. A miniature forward and reverse motor 210 (model: 60KTYZ) is fixedly connected to the inner side of the mounting cavity 200. A rotating rod 211 is fixedly connected to the end of the power output shaft of the miniature forward and reverse motor 210. A first helical gear 212 is fixedly connected to the top of the rotating rod 211. A double-threaded rod 220 is rotatably connected to the inner side of the mounting cavity 200. A second helical gear 221 is fixedly connected to the end of the double-threaded rod 220. A movable seat 222 is screwed to the outer side of the double-threaded rod 220. A positioning rod 230 is fixedly connected between the inner sides of the fixed quick-change housing 100 and the movable quick-change housing 111. A positioning slider 231 is slidably connected to the outer side of the positioning rod 230. The positioning slider 231 and the outer side of the movable seat 222 are connected... A clamp 232 is fixedly connected between the two parts. The first helical gear 212 and the second helical gear 221 mesh with each other. An anti-slip pad 233 is fixedly connected to the outside of the clamp 232. A protective shell 240 is installed on the inside of the mounting cavity 200. By pressing the control switch 140, the micro forward and reverse motor 210 is started, which drives the rotating rod 211 and the first helical gear 212 to rotate. This causes the first helical gear 212 to drive the second helical gear 221 and the double-ended threaded rod 220 to rotate. The double-ended threaded rod 220 drives the moving seat 222 to move. Guided by the positioning rod 230 and the positioning slider 231, the clamp 232 can be moved left and right to fix the tool head and the output shaft of the power tool. It can be adjusted according to the size of different power tools and tool heads. It is easy to operate and can be quickly replaced, improving the replacement efficiency.

[0027] In use, this utility model works as follows: During replacement, rotating the pull ring 136 drives the fixed plate 133, the limiting rod 132, and the locking block 134 to rotate. Under the push of the return spring 135, the limiting rod 132 disengages from the limiting slot 122, pulling the movable quick-change shell 111, causing the telescopic rod 110 to move the movable quick-change shell 111 to fix the quick-change shell 100, thereby increasing the operating space. After replacement, pushing the movable quick-change shell 111 inserts the connecting plate 121 into the connecting groove 120, pressing the pull ring 136 drives the limiting rod 132 to insert into the limiting slot 122, and rotating the pull ring 136 drives the limiting rod 132 and the locking block 134 to rotate, so that the locking block 134 fits into the locking groove 131, thereby completing the fixation of the connecting plate 121 and the movable quick-change shell 111, increasing the operating space around when changing the tool head.

[0028] By pressing the control switch 140 to start the micro forward and reverse motor 210, the rotating rod 211 and the first helical gear 212 are driven to rotate. This causes the first helical gear 212 to drive the second helical gear 221 and the double-ended threaded rod 220 to rotate. The double-ended threaded rod 220 drives the moving seat 222 to move. Guided by the positioning rod 230 and the positioning slider 231, the clamp 232 can be moved left and right to fix the tool head and the output shaft of the power tool. It can be adjusted according to different power tools and tool head sizes, and is easy to operate and can be quickly changed.

[0029] It should be noted that the control switch 140 and the miniature forward / reverse motor 210 mentioned in the text are both existing technologies. The principle of the control switch 140 is as follows: the control switch 140 is usually composed of a mechanical switch and matching electrical components. It can be operated manually or by other control signals. The main function of the control switch 140 is to open, close, or switch the current flow path in the circuit, thereby realizing the control of electrical equipment. The principle of the miniature forward / reverse motor 210 is as follows: the miniature forward / reverse motor 210 is usually composed of a stator and a rotor. The stator generates a magnetic field, and the rotor rotates under the force of the magnetic field. Forward and reverse rotation of the motor refers to the change of the motor's rotation direction. Forward rotation means that the motor rotates in the direction set in the design, while reverse rotation means that the motor rotates in the opposite direction. The methods for forward and reverse rotation of the motor include changing the direction of the input current and changing the wiring method.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A power tool quick-change tool head locking device, comprising a fixed quick-change shell (100), the inner side of the fixed quick-change shell (100) is fixedly connected with a telescopic rod (110), characterized in that: The end of the telescopic rod (110) is fixedly connected to a movable quick-change shell (111); The fixed quick-change shell (100) has a connecting groove (120) on its outer side, and the movable quick-change shell (111) has a connecting plate (121) fixedly connected to its outer side. The connecting groove (120) has a locking mechanism (130) fixedly connected to its inner side. The locking mechanism (130) has a locking groove (131) on its inner side. The locking mechanism (130) has a limiting rod (132) slidably connected to its inner side. The end of the limiting rod (132) is fixedly connected to a fixing plate (133), and the outer side of the limiting rod (132) is fixedly connected to a locking block (134).

2. A quick change tool head locking device for a power tool according to claim 1, characterized in that: Both the fixed quick-change housing (100) and the movable quick-change housing (111) have mounting cavities (200) on their outer sides. A miniature forward and reverse motor (210) is fixedly connected to the inner side of the mounting cavity (200). A rotating rod (211) is fixedly connected to the end of the power output shaft of the miniature forward and reverse motor (210). A first helical gear (212) is fixedly connected to the top of the rotating rod (211). A double-threaded rod (220) is rotatably connected to the inner side of the mounting cavity (200). A second helical gear (221) is fixedly connected to the end of the threaded rod (220). A movable seat (222) is screwed to the outer side of the double-threaded rod (220). A positioning rod (230) is fixedly connected between the inner sides of the fixed quick-change shell (100) and the movable quick-change shell (111). A positioning slider (231) is slidably connected to the outer side of the positioning rod (230). A clamp (232) is fixedly connected between the positioning slider (231) and the outer side of the movable seat (222).

3. The power tool quick-change tool head locking device according to claim 1, characterized in that: The connecting plate (121) has a limiting slot (122) on its outer side. When the connecting plate (121) is inserted into the connecting groove (120), the limiting slot (122) and the limiting rod (132) are located on the same axis.

4. The quick-change tool head locking device of claim 1, wherein: A return spring (135) is fixedly connected to the outer side of the locking mechanism (130), and the return spring (135) is fixedly connected to the fixed plate (133). A pull ring (136) is fixedly connected to the outer side of the fixed plate (133).

5. The quick-change tool head locking device of claim 2, wherein: Both the fixed quick-change housing (100) and the movable quick-change housing (111) have a control switch (140) embedded in their outer sides. The control switch (140) is connected to the wire of the miniature forward and reverse motor (210) via a wire.

6. The quick-change tool head locking device of an electric power tool according to claim 2, characterized in that: The first helical gear (212) meshes with the second helical gear (221), an anti-slip pad (233) is fixedly connected to the outside of the clamp (232), and a protective shell (240) is installed on the inside of the mounting cavity (200).

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