Quick connecting mechanism

Abstract

The utility model belongs to the technical field of vehicle connecting parts, and particularly relates to a quick connecting mechanism which comprises an upper connecting pipe, a lower connecting pipe, an inserting block, a connecting pin, a pressing handle and a positioning shaft. The inserting block is fixed to the end of the upper connecting pipe, an inserting hole is formed in the inserting block, the inserting block is inserted into the lower connecting pipe, the connecting pin is fixed into the lower connecting pipe, the connecting pin is matched with the inserting hole in an inserting mode, the pressing handle is hinged to the upper connecting pipe, and the pressing handle is fixed to the lower connecting pipe. One end of the pressing handle is hinged to one end of the positioning shaft, and the positioning shaft penetrates through the upper connecting pipe and the inserting block to be matched with the positioning hole in the connecting pin in an inserting mode. The device is simple and stable in structure, can quickly connect two sections of connecting pieces together, and is wide in application range.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle connection components, and in particular relates to a quick connection mechanism. Background Art

[0002] In many mechanical structures, it is often necessary to quickly plug two connecting pipes together. For example, a quick connection structure and an electric wheelchair head thereof disclosed in a Chinese patent, application number: 202011176264.4. The connecting pipe in the patent is a connecting mechanism used to connect the head and the wheelchair. This connecting pipe structure adopts an ordinary locking structure, which is easy to loosen, resulting in an insufficiently firm connection. Utility Model Content

[0003] The purpose of the utility model is to provide a quick connection mechanism to solve the problems existing in the prior art.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a quick connection mechanism, including an upper connecting tube, a lower connecting tube, a plug-in block, a connecting pin, a pressing hand and a positioning shaft; the plug-in block is fixed at the end of the upper connecting tube, the plug-in block is provided with a plug-in hole, the plug-in block is inserted into the lower connecting tube, the connecting pin is fixed in the lower connecting tube, the connecting pin is plug-fitted with the plug-in hole, the pressing hand is hinged to the upper connecting tube, one end of the pressing hand is hinged to one end of the positioning shaft, and the positioning shaft passes through the upper connecting tube and the plug-in block and is plug-fitted with the positioning hole on the connecting pin.

[0005] Preferably, the cross-sections of the upper connecting tube and the lower connecting tube are both elliptical and have the same size.

[0006] Preferably, the side of the plug-in block is provided with a guide groove, and the inner side of the lower connecting tube is correspondingly provided with a guide block, and the guide block is slidably matched with the guide groove.

[0007] Preferably, the outer ends of the upper connecting tube and the lower connecting tube are provided with connecting pieces.

[0008] Preferably, the end of the connecting pin is chamfered.

[0009] The beneficial effects of the utility model are as follows: the device has a simple and stable structure, can quickly connect two sections of connecting pieces together, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional diagram of the utility model;

[0011] Figure 2 It is a three-dimensional diagram of the utility model from another direction. DETAILED DESCRIPTION

[0012] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0013] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0014] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fixed connection" and "fixed connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0015] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings and preferred embodiments.

[0016] like Figure 1-Figure 2 As shown, a quick connection mechanism includes an upper connecting tube 1, a lower connecting tube 2, a plug-in block 3, a connecting pin 4, a pressing hand 5 and a positioning shaft 6; the plug-in block is fixed at the end of the upper connecting tube, and the plug-in block is provided with a plug-in hole 7, which penetrates the plug-in tube all the way, and the plug-in block is slightly smaller than the upper connecting tube and can be inserted into the upper connecting tube, and the plug-in block is fixed to the interior of the upper connecting tube by two screws on the side, and the plug-in block is slightly smaller than the lower connecting tube, and the plug-in block is inserted into the lower connecting tube, and at the same time, the connecting pin is fixed in the lower connecting tube, and the connecting pin is plugged and matched with the plug-in hole, and in order to allow the connecting pin to smoothly enter the plug-in hole, the end of the connecting pin is chamfered. In order to make the plug-in block and the lower connecting tube fit tightly, there is a certain gap around the connecting pin and the lower connecting tube.

[0017] In order to position and lock the connecting pin, the pressing hand is hinged to the upper connecting tube, one end of the pressing hand is hinged to one end of the positioning shaft, and the positioning shaft passes through the upper connecting tube and the plug-in block and is plugged into the positioning hole 8 on the connecting pin. When the pressing hand is pressed, the positioning shaft is retracted from the positioning hole, and the connecting pin can be separated from the plug-in hole. In order to keep the pressing hand in a downward pressing state, a spring can be arranged between the pressing hand and the upper connecting tube, or a torsion spring can be installed on the shaft where the pressing hand and the upper connecting tube are hinged (not shown in the specific figure).

[0018] In order to prevent the upper connecting tube and the lower connecting tube from rotating, the cross sections of the upper connecting tube and the lower connecting tube are both elliptical and have the same size.

[0019] Furthermore, in order to enable the plug-in block to smoothly enter the lower connecting tube, the plug-in block has a guide groove 9 on its side, and the inner side of the lower connecting tube is correspondingly provided with a guide block 10, which is slidably matched with the guide groove. The design of the guide block and the guide groove can play a role in positioning and guiding.

[0020] In order to facilitate connection with other components, the outer ends of the upper connecting pipe and the lower connecting pipe are provided with connecting pieces.

[0021] In specific applications, the device can be used as a connecting pipe between the front of an electric wheelchair and the wheelchair. It is easy to operate and can quickly separate and combine the front of the wheelchair.

[0022] It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications should also be regarded as the protection scope of the utility model.

Claims

1. A quick connection mechanism, characterized in that: It includes an upper connecting tube, a lower connecting tube, a plug-in block, a connecting pin, a pressing hand and a positioning shaft; the plug-in block is fixed to the end of the upper connecting tube, the plug-in block is provided with a plug-in hole, the plug-in block is inserted into the lower connecting tube, the connecting pin is fixed in the lower connecting tube, the connecting pin is plug-fitted with the plug-in hole, the pressing hand is hinged to the upper connecting tube, one end of the pressing hand is hinged to one end of the positioning shaft, the positioning shaft passes through the upper connecting tube and the plug-in block and is plug-fitted with the positioning hole on the connecting pin; a spring is arranged between the pressing hand and the upper connecting tube or a torsion spring is installed on the shaft hinged between the pressing hand and the upper connecting tube.

2. The quick connection mechanism according to claim 1, characterized in that: The cross sections of the upper connecting tube and the lower connecting tube are both elliptical and have the same size.

3. The quick connection mechanism according to claim 1, characterized in that: The side of the plug-in block is provided with a guide groove, and the inner side of the lower connecting pipe is correspondingly provided with a guide block, and the guide block is slidably matched with the guide groove.

4. The quick connection mechanism according to claim 1, characterized in that: The outer ends of the upper connecting pipe and the lower connecting pipe are both provided with connecting pieces.

5. The quick connection mechanism according to claim 1, characterized in that: The end of the connecting pin is chamfered.

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