Connecting piece with locking device

Abstract

The utility model discloses a connecting piece with a locking device, which belongs to the field of mechanical transmission and comprises a pin shaft, a lock seat and a lock hook, the lock hook is rotatably connected to the lock seat, one end of the lock hook close to the pin shaft is provided with a groove, and one end of the pin shaft is provided with a pin shaft groove neck corresponding to the groove. A connecting rod needing to be connected is arranged on the pin shaft in a sleeved mode, the lock hook is rotated to enable the lock hook to rotate on the lock seat, when the lock hook rotates to the position that the groove in the lock hook buckles the groove neck of the pin shaft, locking is completed, at the moment, the connecting rod arranged on the pin shaft in a sleeved mode cannot be separated from the pin shaft, and a stable connection state is kept. When the lock needs to be unlocked, only the lock hook needs to be rotated reversely, so that the groove is separated from the groove neck of the pin shaft. When the pin shaft is disassembled or assembled, no tool is needed, and operation can be carried out outside the visual field.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical transmission technical field, and specifically is a connecting piece with locking device. BACKGROUND

[0002] Pin shaft is mainly used for the connecting place of two parts, can constitute hinged connection, also can static fixed connection, still can make relative motion with the connected piece. The pin shaft of the existing connecting rod mechanism is usually fixed by adopting split pin or elastic check ring under the use condition of not bearing axial load, this mode is simple in structure, but there is the problem that special tools are needed for assembly and disassembly, and it is difficult to assemble and disassembly even cannot assemble and disassembly in narrow space or visual field. CONTENT OF UTILITY MODEL

[0003] The utility model aims at providing a connecting piece with locking device, is applied to the connecting rod connecting position of not bearing axial load, and does not need any tool for disassembly or assembly pin shaft, and can be operated in visual field, and the problem that the connecting rod mechanism is difficult to overhaul and replace in narrow space or visual field is solved to a great extent.

[0004] The utility model provides a connecting piece with locking device, including pin shaft, lock seat and lock hook, the lock hook is rotatably connected in the lock seat, the lock hook is equipped with the recess in the end close to pin shaft, and the one end of pin shaft is equipped with the pin shaft groove neck corresponding with recess.

[0005] Further scheme: the one side of lock hook away from lock seat is equipped with spring short shaft, the one side of lock seat facing lock hook is equipped with spring long shaft, the spring long shaft is located in the one end of lock seat away from pin shaft, the one end of lock hook away from pin shaft is equipped with first protruding portion and second protruding portion, the spring long shaft is located between first protruding portion and second protruding portion, spring is installed on spring short shaft, and the other end of spring is installed in spring long shaft.

[0006] Further scheme: the lock hook is also equipped with the lock hook pivot mounting hole of penetration, and the lock hook pivot mounting hole is located between spring short shaft and spring long shaft.

[0007] Further scheme: the one end of spring short shaft away from lock hook is equipped with spring short shaft groove neck, the one end of spring long shaft away from lock seat is equipped with spring long shaft groove neck, and the both ends of spring are respectively clamped in spring short shaft groove neck and spring long shaft groove neck.

[0008] Further scheme: the one side of lock seat facing lock hook is equipped with boss, the end face of boss is provided with threaded hole, the lock hook pivot is installed in lock hook pivot mounting hole, and the tail portion of lock hook pivot is screwed in threaded hole.

[0009] Further, the lock hook pivot comprises a threaded column at the tail, a middle cylinder at the middle, and a square flange at the head, the middle cylinder is matched with the lock hook pivot mounting hole, and the threaded column is screwed with the threaded hole.

[0010] Further, the spring short shaft is screwed at one end of the lock hook, and a notch is formed on the end face of the other end.

[0011] Further, the spring long shaft is screwed at one end of the lock seat, and a notch is formed on the end face of the other end.

[0012] Further, the pin shaft is provided with an end flange at the other end.

[0013] Further, the pin shaft is provided with a first connecting rod and a second connecting rod, the second connecting rod is close to one end of the pin shaft groove neck, and the lock seat is mounted on the side of the second connecting rod facing the pin shaft groove neck.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] 1. The connecting rod to be connected is sleeved on the pin shaft, the lock hook is rotated, the lock hook is rotated on the lock seat, when the groove on the lock hook buckles the pin shaft groove neck, the locking is completed, at this time, the connecting rod sleeved on the pin shaft cannot be taken out of the pin shaft, and the stable connection state is kept. When the locking needs to be unlocked, the lock hook is only needed to be reversely rotated, so that the groove is separated from the pin shaft groove neck. When the pin shaft is disassembled or assembled, no tool is needed, and the operation can be carried out outside the visual field.

[0016] 2. The spring short shaft and the spring long shaft are arranged on the lock hook and the lock seat respectively, the two ends of the spring are mounted on the spring short shaft and the spring long shaft respectively, no matter the lock hook is in the locking position or the unlocking position, the spring can provide the elastic force for maintaining the existing state of the lock hook, and the reliability and the use convenience of the device are improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to facilitate the understanding of those skilled in the art, the utility model is further described below in combination with the drawings.

[0018] Figure 1 It is a structural schematic view of the utility model embodiment;

[0019] Figure 2 It is a structural schematic view of the pin shaft in the utility model embodiment;

[0020] Figure 3 It is an assembly structural schematic view of the spring long shaft and the lock seat in the utility model embodiment;

[0021] Figure 4 It is an assembly structural schematic view of the spring short shaft and the lock hook in the utility model embodiment;

[0022] Figure 5 Figure 1 is a structure diagram of the lock hook rotating shaft in the embodiment of the present application;

[0023] Figure 6 Figure 2 is a position diagram of the lock hook and spring in the locked state;

[0024] Figure 7 Figure 3 is a position diagram of the lock hook and spring in the unlocked state.

[0025] In the figure: 1-pivot shaft; 1.1-end flange; 1.2-pivot shaft groove neck; 2-lock seat; 2.1-boss; 3-lock hook; 3.1-groove; 3.2-lock hook rotating shaft mounting hole; 3.3-first protruding part; 3.4-second protruding part; 4-lock hook rotating shaft; 4.1-square flange; 4.2-middle cylinder; 4.3-threaded column; 5-spring long shaft; 5.1-spring long shaft groove neck; 6-spring short shaft; 6.1-spring short shaft groove neck; 7-spring; 8-first connecting rod; 9-second connecting rod. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0027] Unless specifically stated otherwise, the relative arrangements of parts and steps, numerical expressions, and numerical values set forth in the various examples herein are not limiting of the application. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and not of limitation. The detailed description of the exemplary embodiments preferably will be understood with reference to the accompanying drawings. Any references to examples are intended to be non-limiting and are provided to illustrate the application. Thus, the exemplary embodiments are not intended to be limited to the examples described herein. Any step, function, object, or feature in any of the examples can be replaced by alternative steps, functions, objects, or features possessing similar effects or results. In other words, any element in an example is interchangeable with other elements in the same function. Furthermore, any example can comprise, consist of, or consist essentially of any element or combination of elements, as described herein.

[0028] In the description of the utility model, it is understood that the words "first", "second" and the like are used to limit parts, and are only used to facilitate the distinction of the corresponding parts, and the above words have no special meaning, so it cannot be understood as a limitation on the protection scope of the utility model.

[0029] In the description of the utility model, it should be explained that, unless otherwise specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection, it can be directly connected, or indirectly connected through intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0030] In order to facilitate the description, spatial relative terms such as "above", "above", "upper surface", "upper" and the like can be used to describe the spatial position relationship of one device or feature with other devices or features as shown in the figure. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the figure. For example, if the device in the drawing is inverted, the device described as "above" or "above" other devices or structures will be positioned "below" or "below" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative description used herein is interpreted accordingly.

[0031] Please refer to Figures 1-7 As shown in the figure, the embodiment provides a connecting piece with locking device, which comprises pin shaft 1, lock seat 2 and lock hook 3, the lock hook 3 is rotatably connected to the lock seat 2, the lock hook 3 is provided with groove 3.1 close to one end of pin shaft 1, and the pin shaft 1 is provided with pin shaft groove neck 1.2 corresponding to the groove 3.1.

[0032] The first connecting rod 8 and the second connecting rod 9 to be connected are sequentially sleeved on the pin shaft 1, the lock hook 3 is rotated, the lock hook 3 is rotated on the lock seat 2, when the groove 3.1 on the lock hook 3 buckles the pin shaft groove neck 1.2, the locking is completed, at this time, the first connecting rod 8 and the second connecting rod 9 sleeved on the pin shaft 1 cannot be taken off the pin shaft 1, and a stable connection state is maintained. When the locking needs to be released, the lock hook 3 is only needed to be reversely rotated, the groove 3.1 is separated from the pin shaft groove neck 1.2, and the locking is released. The diameter of the pin shaft groove neck 1.2 is smaller than the diameter of other parts of the pin shaft 1, when the groove 3.1 buckles the pin shaft groove neck 1.2, the lock hook 3 can be prevented from being separated from the pin shaft 1 in the axial direction. The device does not need to be assisted by a tool during assembly or disassembly, and can be operated outside the field of vision, and the problem that a connecting rod mechanism is difficult to overhaul and replace in a narrow space or outside the field of vision is solved to a great extent, and the device is very suitable for being applied to a connecting rod connection position which does not bear an axial load.

[0033] In some embodiments, referring to Figures 1-7 As shown in the figure, one side of the lock hook 3 away from the lock seat 2 is provided with a spring short shaft 6, one side of the lock seat 2 facing the lock hook 3 is provided with a spring long shaft 5, the spring long shaft 5 is located at one end of the lock seat 2 away from the pin shaft 1, one end of the lock hook 3 away from the pin shaft 1 is provided with a first protruding part 3.3 and a second protruding part 3.4, the spring long shaft 5 is located between the first protruding part 3.3 and the second protruding part 3.4, the spring short shaft 6 is provided with a spring 7, and the other end of the spring 7 is installed on the spring long shaft 5. The lock hook 3 is also provided with a lock hook rotating shaft installation hole 3.2 penetrating through, and the lock hook rotating shaft installation hole 3.2 is located between the spring short shaft 6 and the spring long shaft 5. One side of the lock seat 2 facing the lock hook 3 is provided with a boss 2.1, an end surface of the boss 2.1 is provided with a threaded hole, and the lock hook rotating shaft installation hole 3.2 is provided with a lock hook rotating shaft 4, and a tail part of the lock hook rotating shaft 4 is screwed into the threaded hole.

[0034] The spring 7 is a tensile spring, and two ends of the spring 7 are connected with the spring long shaft 5 and the spring short shaft 6 respectively, the spring 7 provides resistance in an initial stage of rotation of the lock hook 3, with rotation of the lock hook 3, a center line of the spring long shaft 5 and the spring short shaft 6 will pass through a center axis of the lock hook rotating shaft 4, the spring 7 provides power in a subsequent stage, promotes rotation of the lock hook 3, and provides elastic force for maintaining an existing state of the lock hook 3 in a locked position or an unlocked position of the device, and the reliability and use convenience of the device are improved.

[0035] When the lock hook 3 rotates around the lock hook rotating shaft 4, the first protruding part 3.3 and the second protruding part 3.4 are limited by the spring long shaft 5 respectively, and the first protruding part 3.3 and the second protruding part 3.4 can also provide a force position for manual operation. The boss 2.1 provides a platform for installation and rotation of the lock hook 3.

[0036] In some embodiments, referring to Figure 3 、 Figure 4As shown, the spring short shaft 6 away from the end of the lock hook 3 is provided with spring short shaft groove neck 6.1, the diameter of spring short shaft groove neck 6.1 is less than the diameter of the spring short shaft 6 other position, the spring long axis 5 away from the end of the lock seat 2 is provided with spring long axis groove neck 5.1, the diameter of spring long axis groove neck 5.1 is less than the diameter of the spring long axis 5 other position, the spring 7 both ends are respectively clamped in spring short shaft groove neck 6.1 and spring long axis groove neck 5.1, can prevent the spring out.

[0037] In some embodiments, please refer to Figure 5 As shown, the lock hook pivot 4 includes the tail of the threaded column 4.3, the middle of the middle cylinder 4.2 and the head of the square flange 4.1, the middle cylinder 4.2 is matched with the lock hook pivot mounting hole 3.2, and the threaded column 4.3 is screwed with the threaded hole. The lock hook 3 is hinged with the lock seat 2 through the lock hook pivot 4, the square flange 4.1 can prevent the lock hook 3 from coming out of the lock seat 2, and will not affect the rotation of the lock hook 3 relative to the lock seat 2.

[0038] In some embodiments, please refer to Figure 1 、 Figure 3 、 Figure 4 As shown, the spring short shaft 6 is screwed at one end of the lock hook 3, and the other end of the end face is provided with a notch. The spring long axis 5 is screwed at one end of the lock seat 2, and the other end of the end face is provided with a notch. Through the notch, it is convenient to use tools to tighten the spring short shaft 6 and the spring long axis 5 to achieve the purpose of disassembly and assembly, so as to adapt to special occasions where manual force is not enough.

[0039] It should be noted that, please refer to Figure 1 、 Figure 2 As shown, the other end of the pin shaft 1 is provided with an end flange 1.1. The pin shaft 1 is sleeved with a first connecting rod 8 and a second connecting rod 9, the first connecting rod 8 is close to one end of the end flange 1.1, and is limited by the end flange 1.1, the second connecting rod 9 is close to one end of the pin shaft groove neck 1.2, and the lock seat 2 is installed on the side of the second connecting rod 9 facing the pin shaft groove neck 1.2. The length of the pin shaft 1 is related to the thickness of the first connecting rod 8, the second connecting rod 9, the lock seat 2 and the boss 2.1, so as to keep the lock hook 3 flat with the lock seat 2, the first connecting rod 8 and the second connecting rod 9 when the lock hook 3 buckles the pin shaft groove neck 1.2. After locking, the first connecting rod 8 and the second connecting rod 9 are limited between the end flange 1.1 and the lock hook 3, so as to realize the stable connection of the first connecting rod 8 and the second connecting rod 9.

[0040] The connection mode of the lock seat 2 and the second connecting rod 9 is not limited, which can adopt welding, screwing, riveting and the like, as long as the lock seat 2 can be fixed on the second connecting rod 9. The second connecting rod 9 can be a fixed connecting rod or a movable connecting rod.

[0041] The working principle of the device is as follows:

[0042] When the pin shaft 1 needs to be disassembled, only the second protruding part 3.4 on the lock hook 3 is pushed by hand towards the spring long shaft 5, the groove 3.1 on the lock hook 3 gradually disengages from the pin shaft groove neck 1.2 on the pin shaft 1, and the first protruding part 3.3 disengages from the spring long shaft 5. The spring 7 provides resistance in the initial stage of the rotation of the lock hook 3, and as the lock hook 3 rotates, the center line of the spring long shaft 5 and the spring short shaft 6 will pass the center axis of the lock hook rotation shaft 4, and the spring 7 provides assistance in the subsequent stage to facilitate the rotation of the lock hook 3. Finally, the second protruding part 3.4 contacts the spring long shaft 5, the elastic force of the spring 7 keeps the device in the unlocked state, the lock hook 3 is disengaged from the pin shaft 1, and the pin shaft 1 can be disassembled and taken out from the shaft hole of the first connecting rod 8 and the second connecting rod 9.

[0043] When the pin shaft 1 needs to be reassembled, the second protruding part 3.4 is pushed to contact the spring long shaft 5 to make the device in the unlocked state, and the pin shaft 1 is inserted into the shaft hole of the first connecting rod 8 and the second connecting rod 9. Then the first protruding part 3.3 on the lock hook 3 is pushed by hand towards the spring long shaft 5, and the second protruding part 3.4 gradually disengages from the spring long shaft 5. The spring 7 provides resistance in the initial stage of the rotation of the lock hook 3, and as the lock hook 3 rotates, the center line of the spring long shaft 5 and the spring short shaft 6 will pass the center axis of the lock hook rotation shaft 4, and the spring 7 provides assistance in the subsequent stage to facilitate the rotation of the lock hook 3. Finally, the first protruding part 3.3 contacts the spring long shaft 5, and the groove 3.1 on the lock hook 3 also engages and locks the pin shaft groove neck 1.2 on the pin shaft 1, and the elastic force of the stretched spring 7 keeps the device in the locked state.

[0044] The above is only an example and description of the structure of the utility model, and those skilled in the art can make various modifications or supplements or use similar ways to replace the described specific embodiments, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the present claims, which shall belong to the protection scope of the utility model.

Claims

1. A connector with a locking device, characterized in that, It includes a pin shaft, a lock seat and a lock hook, the lock hook is rotationally connected to the lock seat, the lock hook is provided with a groove near one end of the pin shaft, and the pin shaft is provided with a pin shaft groove neck corresponding to the groove.

2. A connector with a locking device according to claim 1, characterized in that One side of the lock hook away from the lock seat is provided with a spring short shaft, one side of the lock seat facing the lock hook is provided with a spring long shaft, the spring long shaft is located at one end of the lock seat away from the pin shaft, one end of the lock hook away from the pin shaft is provided with a first protruding part and a second protruding part, the spring long shaft is located between the first protruding part and the second protruding part, a spring is installed on the spring short shaft, and the other end of the spring is installed on the spring long shaft.

3. A connector with a locking device according to claim 2, characterized in that The lock hook is also provided with a lock hook rotating shaft mounting hole penetrating through, and the lock hook rotating shaft mounting hole is located between the spring short shaft and the spring long shaft.

4. A connector with locking means according to claim 2 or 3, characterised in that, One end of the spring short shaft away from the lock hook is provided with a spring short shaft groove neck, and one end of the spring long shaft away from the lock seat is provided with a spring long shaft groove neck, and the two ends of the spring are respectively clamped in the spring short shaft groove neck and the spring long shaft groove neck.

5. A connector with a locking device according to claim 3, characterized in that One side of the lock seat facing the lock hook is provided with a boss, a threaded hole is formed in the end face of the boss, a lock hook rotating shaft is installed in the lock hook rotating shaft mounting hole, and the tail of the lock hook rotating shaft is screwed into the threaded hole.

6. A connector with a locking device according to claim 5, characterized in that The lock hook rotating shaft includes a threaded column at the tail, a middle cylinder at the middle part and a square flange at the head, the middle cylinder is matched with the lock hook rotating shaft mounting hole, and the threaded column is screwed with the threaded hole.

7. A connector with locking means according to claim 2, wherein One end of the spring short shaft is screwed to the lock hook, and a notch is formed in the end face of the other end.

8. A connector with locking means according to claim 2, wherein One end of the spring long shaft is screwed to the lock seat, and a notch is formed in the end face of the other end.

9. The connector with locking device according to claim 1, wherein The other end of the pin shaft is provided with an end flange.

10. The connector with locking device according to claim 1, wherein The pin shaft is sleeved with a first connecting rod and a second connecting rod, one end of the second connecting rod is close to the pin shaft groove neck, and the lock seat is installed on one side of the second connecting rod facing the pin shaft groove neck.

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