Quick connector suitable for garden machine

Abstract

The quick connector comprises a fixed chuck and a movable chuck, a sleeve is fixedly connected to the center of the bottom end of the fixed chuck, an installation cylinder is fixedly connected to the middle of the top end of the fixed chuck, a piston hole is formed in the middle of the movable chuck, and the installation cylinder is sleeved with the piston hole. A first compression spring clamped between the fixed chuck and the movable chuck is sleeved outside the mounting cylinder; a guide column is installed in the installation cylinder, the guide column is sleeved with two symmetrical clamping blocks and a second compression spring, the second compression spring is clamped between the two clamping blocks, a pressing block is arranged on the side, away from the second compression spring, of each clamping block, and a clamping groove is formed between each pressing block and the movable chuck. The quick connector has the beneficial effects that when the quick connector is used for dismounting a cutter, the two clamping blocks are close to each other by hands, a wrench or a screwdriver is not needed, and the cutter can be conveniently and quickly replaced; and a mechanism for locking the rotating shaft is not needed, so that the internal structure of the garden machine is simplified.

Description

Technical Field

[0001] The utility model relates to the field of garden machinery, in particular to a quick connector applicable to garden machinery. Background Art

[0002] Existing garden machinery such as lawn mowers and brush cutters are generally driven by fuel engines or electric motors to rotate the cutting tools, so that the cutting tools cut branches, leaves and weeds, and different cutting tools need to be replaced for different objects to be cut. The existing connectors for fixing the cutting tools on the rotating shafts of garden machinery all use bolts to lock, and a wrench or screwdriver is needed when disassembling and assembling the cutting tools, resulting in troublesome disassembly and assembly of the cutting tools; moreover, a mechanism for locking the rotating shaft needs to be provided to prevent the rotating shaft from rotating together with the bolts, resulting in a relatively complex internal structure of the garden machinery. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the above problems existing in the prior art and provide a quick connector applicable to garden machinery.

[0004] To achieve the above technical purpose and reach the above technical effect, the utility model is realized through the following technical solutions:

[0005] A quick connector applicable to garden machinery includes a fixed chuck and a movable chuck. A sleeve for connecting with a rotating shaft on the garden machinery is fixedly connected to the center of the bottom end of the fixed chuck. An installation cylinder with a rectangular cross-section is fixedly connected to the middle of the top end of the fixed chuck. A piston hole with a rectangular cross-section is formed in the middle of the movable chuck. The installation cylinder is sleeved in the piston hole, and a first compression spring clamped between the fixed chuck and the movable chuck is sleeved outside the installation cylinder; a guide post is installed in the installation cylinder, two symmetrical clamping blocks and a second compression spring are sleeved on the guide post, the second compression spring is clamped between the two clamping blocks, and a pressing block extending outwards is arranged on one side of each clamping block away from the second compression spring. A clamping groove for clamping the cutting tool is formed between the pressing block and the movable chuck.

[0006] Wherein, a limiting plane matched with a flat key on one side of the rotating shaft is arranged on one side of the inner wall of the sleeve, and a locking screw is also screwed on one side of the sleeve.

[0007] Wherein, a lower guiding slope and an upper guiding slope are arranged on one side of the pressing block away from the second compression spring.

[0008] Wherein, a dial block extending upwards is arranged at the top end of the clamping block.

[0009] Wherein, the width of the lower part of the clamping block is equal to the width inside the installation cylinder, and the width of the upper part of the clamping block is equal to the width outside the installation cylinder.

[0010] The beneficial effects of the present utility model are as follows: The sleeve is connected to the rotating shaft of the gardening machine, the cutter is sleeved on the mounting cylinder, and the clamping block and the second compression spring cooperate to prevent the cutter from detaching from the mounting cylinder. The cutter is clamped by the cooperation of the first compression spring, the movable chuck and the clamping block, preventing the cutter from moving axially along the mounting cylinder on the mounting cylinder. When removing the cutter from this quick connector, only need to move two clamping blocks closer to each other by hand, without the need to use a wrench or a screwdriver, which facilitates the quick replacement of the cutter. And there is no need to set up a mechanism for locking the rotating shaft, simplifying the internal structure of the gardening machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings described herein are used to provide a further understanding of the present utility model and form a part of this application. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0012] Figure 1 is a perspective structural schematic diagram of the first perspective of the quick connector in the present utility model;

[0013] Figure 2 is a perspective structural schematic diagram of the second perspective of the quick connector in the present utility model;

[0014] Figure 3 is a planar structural schematic diagram of the side view of the quick connector in the present utility model;

[0015] Figure 4 is an exploded view of the quick connector in the present utility model;

[0016] Explanation of the reference numerals in the drawings: fixed chuck 1, sleeve 11, limiting plane 111, locking screw 112, mounting cylinder 12, movable chuck 2, piston hole 21, first compression spring 3, guide post 4, clamping block 5, dial block 51, pressing block 52, lower guiding slope 521, upper guiding slope 522, second compression spring 6, clamping groove 7. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0018] As Figures 1 to 4 shown, a quick connector applicable to a gardening machine includes a fixed chuck 1 and a movable chuck 2. The bottom center of the fixed chuck 1 is fixedly connected with a sleeve 11 for connecting to the rotating shaft on the gardening machine. One side of the inner wall of the sleeve 11 is provided with a limiting plane 111 that cooperates with the flat key on one side of the rotating shaft, and a locking screw 112 is also screwed on one side of the sleeve 11.

[0019] At the middle of the top end of the fixed chuck 1, there is a mounting cylinder 12 with a rectangular cross-section fixedly connected. In the middle of the movable chuck 2, there is a piston hole 21 with a rectangular cross-section. The mounting cylinder 12 is sleeved in the piston hole 21, and a first compression spring 3 is sleeved outside the mounting cylinder 12 and clamped between the fixed chuck 1 and the movable chuck 2.

[0020] A guide post 4 is installed in the mounting cylinder 12. Two symmetrical clamping blocks 5 and a second compression spring 6 are sleeved on the guide post 4. The second compression spring 6 is clamped between the two clamping blocks 5. The width of the lower part of the clamping block 5 is equal to the width inside the mounting cylinder 12, and the width of the upper part of the clamping block 5 is equal to the width outside the mounting cylinder 12.

[0021] At the top end of the clamping block 5, there is a dial block 51 extending upward, so that when disassembling and assembling the tool, the two clamping blocks 5 can be moved closer to each other by pinching the dial blocks on the two clamping blocks 5 by hand.

[0022] On one side of each clamping block 5 away from the second compression spring 6, there is a pressing block 52 extending outward. A clamping groove 7 for clamping the tool is formed between the pressing block 52 and the movable chuck 2.

[0023] On the side of the pressing block 52 away from the second compression spring 6, there are a lower guiding slope 521 and an upper guiding slope 522, so that the pressing block 52 can be inserted into the mounting hole at the center of the tool when disassembling and assembling the tool.

[0024] Connect the tool sleeve with the rotating shaft of the garden machinery by using a sleeve. The tool is sleeved on the mounting cylinder. The clamping block and the second compression spring are used in cooperation to prevent the tool from detaching from the mounting cylinder. The tool is clamped tightly through the cooperation of the first compression spring, the movable chuck and the clamping block, preventing the tool from moving axially along the mounting cylinder on the mounting cylinder. When removing the tool from this quick connector, only need to make the two clamping blocks approach each other by hand, without the need to use a wrench or a screwdriver, which is convenient for the quick replacement of the tool. And there is no need to set up a mechanism for locking the rotating shaft, simplifying the internal structure of the garden machinery.

[0025] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed.

Claims

1. A quick connector suitable for garden machinery, characterized by: It includes a fixed chuck and a movable chuck, the bottom center of the fixed chuck is fixedly connected with a sleeve for connecting to a rotating shaft on a garden machine, the middle part of the top of the fixed chuck is fixedly connected with a mounting tube with a rectangular cross section, the middle part of the movable chuck is provided with a piston hole with a rectangular cross section, the mounting tube is sleeved in the piston hole, the mounting tube is outerly provided with a first compression spring clamped between the fixed chuck and the movable chuck; a guide column is installed in the mounting tube, two symmetrical clamping blocks and a second compression spring are sleeved on the guide column, the second compression spring is clamped between the two clamping blocks, each of the clamping blocks is provided with a pressure block extending outward on the side away from the second compression spring, and a clamping groove for clamping a tool is formed between the pressure block and the movable chuck.

2. The quick connector according to claim 1, characterized in that: One side of the inner wall of the sleeve is provided with a limiting plane matched with a flat key on one side of the rotating shaft, and one side of the sleeve is also threaded with a locking screw.

3. The quick connector according to claim 1, characterized in that: A lower guide slope and an upper guide slope are arranged on a side of the pressure block away from the second compression spring.

4. The quick connector according to claim 1, characterized in that: The top end of the clamping block is provided with a shifting block extending upward.

5. The quick connector according to claim 1, characterized in that: The width of the lower portion of the clamp block is equal to the width of the inside of the installation tube, and the width of the upper portion of the clamp block is equal to the width of the outside of the installation tube.

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