Spring-free rapid limiting device

Abstract

The springless rapid limiting device comprises a guide shaft sleeve, a limiting threaded pin and a handle, the limiting threaded pin is connected into the guide shaft sleeve in a threaded mode, one end of the limiting threaded pin penetrates through one end of the guide shaft sleeve, and the other end of the limiting threaded pin extends out of the other end of the guide shaft sleeve to be connected with the handle; and the handle is rotated to realize the extending or retracting action of the limiting threaded pin. The spring-free rapid limiting device mainly aims to be used for a long time in hostile environments, the use effectiveness and reliability of the spring-free rapid limiting device are guaranteed, the spring-free rapid limiting device is not designed through any spring element or elastic element, limiting and limiting releasing can be rapidly conducted, and therefore the timeliness of the spring-free rapid limiting device is guaranteed, and the operation efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of quick disassembly and assembly structures, and more particularly to a springless quick limiting device. Background Art

[0002] There are two conventional design principles for limited space structures:

[0003] 1) Use the compression spring and the structural buckle to perform press-type limiting;

[0004] 2) The limit pin is limited by combining a spring and a bumper;

[0005] 3) Use the elastic material’s own elastic design to limit the position.

[0006] The above designs will not have much impact when used in normal environment, but in long time and harsh environment, the spring elements will usually be corroded and fail, and even worse, the limit device will lose its function. Summary of the invention

[0007] The purpose of the present invention is to provide a springless quick limiting device to solve the technical problems in the background technology.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A springless quick limit device comprises: a guide sleeve, a limit threaded pin and a handle, wherein the limit threaded pin is threadedly connected in the guide sleeve, and one end of the limit threaded pin penetrates one end of the guide sleeve, and the other end of the limit threaded pin extends out of the other end of the guide sleeve and is connected to the handle; the limit threaded pin is extended or retracted by rotating the handle.

[0010] In some embodiments, the limiting threaded pin and the guide sleeve are matched with multi-thread and lead, so that the limiting threaded pin can be extended or retracted after the handle is rotated by at most 180°.

[0011] In some embodiments, the limiting threaded pin is provided with a positioning platform at one end connected to the handle, and is connected to the handle via the positioning platform.

[0012] In some embodiments, the limiting threaded pin is provided with a chamfer at the end portion matched with the first through hole.

[0013] In some embodiments, the limit thread pin includes a limit thread pin body and an annular portion arranged on the limit thread pin body, and the annular portion and the guide sleeve are matched with multi-thread threads and leads, so that the limit thread pin can be extended or retracted after the handle is rotated at most 180°.

[0014] In some embodiments, the guide sleeve has a penetrating adapting cavity, the opening diameter of one end of the adapting cavity is adapted to the annular portion, and the opening diameter of the other end of the adapting cavity is adapted to the limiting threaded pin body.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present application provides a springless quick limit device, which can quickly limit and release the limit under long-term and harsh environmental conditions, and can solve the problem of spring element failure under conditions such as salt spray, mold, humidity and heat, thereby improving the reliability and life of similar products.

[0017] The main purpose of the springless quick limit device of the present application is to be able to use this device for a long time in any harsh environment and to ensure its effectiveness and reliability. This device is not designed using any spring elements and elastic elements, and can quickly limit and release the limit, thereby ensuring its timeliness and improving operational efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 and Figure 2 They are all structural schematic diagrams of central opening type springless quick disassembly and assembly devices;

[0019] Figure 3 This is a three-dimensional assembly rendering of the center-opening springless quick disassembly and assembly device;

[0020] Figure 4 This is the explosion effect diagram of the three-dimensional assembly of the center-opening springless quick disassembly and assembly device;

[0021] Figure 5 This is a schematic diagram of a springless quick limit device.

[0022] Figure 6 This is the overall structural diagram of the springless quick limit device.

[0023] Illustration: 1-fixed mounting plate, 2-rotating chuck, 3-guide sleeve, 4-limiting threaded pin, 5-handle, 6-first fastening screw, 7-second fastening screw, 8-annular limiting strip, 9-limiting boss, 10-notch. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below in conjunction with the drawings in the preferred embodiments of the present application. In the drawings, the same or similar reference numerals throughout represent the same or similar parts or parts with the same or similar functions. The described embodiments are part of the embodiments of the present application, not all of the embodiments. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0025] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0026] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are orientations or positional relationships based on the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0028] In addition, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or display that includes a series of steps or elements is not necessarily limited to those steps or elements explicitly listed but may include other steps or elements not explicitly listed or inherent to such process, method, product, or display.

[0029] The following will be combined Figure 1-Figure 6 , a springless quick limit device involved in the embodiment of the present application is described in detail. It is worth noting that the following embodiments are only used to explain the present application and do not constitute a limitation of the present application. For better explanation, it is applied to a central opening type springless quick disassembly and assembly device for detailed description.

[0030] Embodiment 1:

[0031] See also Figure 1-6A central opening type springless quick disassembly and assembly device comprises: a fixed mounting plate 1, a rotating chuck 2, and a springless quick limiting device. The fixed mounting plate 1 has a mounting cavity; the fixed mounting plate 1 is made of an aluminum alloy material, which has undergone an anti-corrosion treatment process after processing and has extremely strong corrosion resistance; when fixedly installed, the screws are installed inside and have a screw hiding function. The rotating chuck 2 is rotatably arranged in the mounting cavity; the rotating chuck 2 is made of an aluminum alloy material, which has undergone an anti-corrosion treatment process after processing and has extremely strong corrosion resistance; when the rotating chuck 2 is rotated into place in the fixed mounting plate 1, the springless quick limiting device is used to lock and unlock the rotating chuck 2 and the fixed mounting plate 1.

[0032] In some embodiments, a limiting boss 9 is provided on the annular side wall of the mounting cavity, and an annular limiting strip 8 is provided on the side wall of the mounting cavity outside the limiting boss 9. Limiting protrusions are provided on both sides of the rotating chuck 2. The annular limiting strip 8 is used to limit the limiting protrusions. The annular limiting strip 8 is provided with two notches 10 that are adapted to the limiting protrusions. The limiting protrusions are installed in the mounting through the notches 10. When the limiting protrusion on one side rotates in the mounting cavity and abuts against the limiting boss 9, the rotating chuck 2 rotates into place.

[0033] When in use, the rotating chuck 2 is placed in the installation cavity through the notch 10. At this time, the limiting protrusions arranged on both sides of the rotating chuck 2 are just adapted to the annular side wall of the installation cavity, that is, the outer diameter distance of the limiting protrusions arranged on both sides of the rotating chuck 2 is slightly smaller than the inner diameter of the annular side wall of the installation cavity. The rotating chuck 2 is rotated in the installation cavity. When the limiting protrusion on one side of the rotating chuck 2 rotates to abut against the limiting boss 9, it cannot continue to rotate. At this time, the rotating chuck 2 is just rotated to the engaging position.

[0034] The fixed mounting plate 1 is provided with a first through hole, and the rotating chuck 2 is provided with a second through hole at the position of the limiting protrusion. When the rotating chuck 2 is rotated into position in the mounting cavity, the first through hole and the second through hole are aligned. The limiting protrusion is an arc block. The outer surface of the fixed mounting plate 1 is provided with a mounting surface at the position where the first through hole is opened. The arc block can better match the rotation of the annular side wall.

[0035] The design principle of the center-opening springless quick disassembly and assembly device is to install the assembled guide sleeve 3, the limit threaded pin 4, and the handle 5 on the fixed mounting plate 1 to form the base part of the quick disassembly and assembly device, rotate the handle 5 so that the limit pin is in a hidden state in the fixed mounting plate 1 in the chuck, and then direct the rotating chuck 2 with the equipment into the fixed mounting plate 1, rotate it 90 degrees, so that the first through hole and the second through hole are aligned, and finally rotate the handle 5 clockwise to limit and fix the rotating chuck 2.

[0036] In some embodiments, the springless quick limit device comprises: a guide sleeve 3, a limit threaded pin 4 and a handle 5, wherein the guide sleeve 3 is mounted on the fixed mounting plate 1 through the mounting surface and fixed by a first fastening screw 6. The limit threaded pin 4 is threadedly connected in the guide sleeve 3, and one end of the limit threaded pin 4 passes through the first through hole and is arranged in the second through hole, and the other end of the limit threaded pin 4 extends out of the guide sleeve 3 and is connected to the handle 5; the limit threaded pin 4 is retracted from the second through hole by rotating the handle 5.

[0037] The limiting threaded pin 4 and the guide sleeve 3 are matched with multi-thread and lead, so that after the handle 5 is rotated by at most 180°, the limiting threaded pin 4 can be retracted from the second through hole or the limiting threaded pin 4 can be extended from the first through hole on the fixed mounting plate 1 to the second through hole on the rotating chuck 2. In this embodiment, the multi-thread design parameters are: three-thread (thread number is 3), lead is 4 mm, and the telescopic amount of half a circle is 6 mm.

[0038] In some embodiments, the limiting threaded pin 4 is provided with a positioning platform at one end connected to the handle 5, is connected to the handle 5 through the positioning platform, and then fixed with a second fastening screw 7. This can prevent the handle 5 and the limiting threaded pin 4 from slipping when the connecting screw is loosened when the handle 5 is rotated.

[0039] The material of the limit thread pin is high-quality stainless steel with extremely strong corrosion resistance; the design feature of the limit thread pin is that the thread part adopts a comprehensive design of multi-thread and lead, so as to ensure that the thread pin can expand and contract to the required design value within the specified number of rotations.

[0040] The guide sleeve is made of high-quality stainless steel with strong corrosion resistance. The guide sleeve is designed with multi-threads that match the limit thread pin to stabilize the thread limit pin and guide and determine the progress of the limit pin.

[0041] The handle is made of aluminum alloy and has undergone anti-corrosion treatment after processing, making it extremely corrosion-resistant. The handle is used to quickly limit and release the limit.

[0042] The design principle of the springless quick limit device is to first assemble the limit threaded pin in the guide sleeve, and then assemble the handle at the end of the limit threaded pin. After the entire device is assembled, the left side in the horizontal direction is the initial position of the handle, and the handle is rotated 180 degrees to the end position of the handle; when the handle is in the initial position, the limit device is in the release limit state, and after the handle is rotated 180 degrees, the limit device is in the limit state and is tightened, that is, the limit device rotates half a circle when the handle rotates, and the threaded pin accurately controls its extension and retraction process through the multi-thread design, so as to achieve rapid limit and release limit states.

[0043] Features of springless quick limit device:

[0044] 1) No spring elements, not limited by time or harsh environmental conditions;

[0045] 2) Comprehensive design of multi-thread and lead to accurately control the extension and retraction of the limit pin;

[0046] 3) Quickly limit and release the limit;

[0047] 4) It can be limited and tightened.

[0048] In some embodiments, the limiting threaded pin 4 is provided with a chamfer at the end portion matched with the first through hole. The limiting threaded pin 4 can quickly enter the first through hole and the second through hole through the chamfer.

[0049] In some embodiments, the bottom of the mounting cavity of the fixed mounting plate 1 and the bottom of the rotating chuck 2 both have large openings to prevent water accumulation.

[0050] Features of the center-opening springless quick disassembly and assembly device:

[0051] 1) Neither the screw fasteners nor the limit pins bear the main load;

[0052] 2) No spring elements, not limited by time or harsh environmental conditions;

[0053] 3) The limit handle only needs to be rotated half a circle to be disassembled and assembled;

[0054] 4) The equipment on the rotating chuck can be installed and used in a directional manner.

[0055] 5) After the entire device is installed, there will be no gaps where water can accumulate.

[0056] The center-opening springless quick disassembly and assembly device has a quick disassembly and assembly structure under long-term and harsh environmental conditions, which can solve the problem of quick disassembly and assembly of the carried equipment under harsh environmental conditions. At the same time, the device must not fail in salt spray, mold, and hot and humid environments. It can withstand strong impact loads when used in motion, thereby improving the reliability and stability of the carried equipment.

[0057] The above description is only a preferred embodiment of the present invention and is used to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A springless quick limit device, characterized in that: include: A guide sleeve, a limit threaded pin and a handle, wherein the limit threaded pin is threadedly connected in the guide sleeve, and one end of the limit threaded pin passes through one end of the guide sleeve, and the other end of the limit threaded pin extends out of the other end of the guide sleeve and is connected to the handle; the limit threaded pin is extended or retracted by rotating the handle.

2. A springless quick limit device according to claim 1, characterized in that: The limiting threaded pin and the guide sleeve are matched with multi-thread and lead, so that the limiting threaded pin can be extended or retracted after the handle is rotated by 180° at most.

3. The springless quick limit device according to claim 1, characterized in that: The limiting threaded pin is provided with a positioning platform at one end connected to the handle, and is connected to the handle through the positioning platform.

4. The springless quick limit device according to claim 1, characterized in that: The limiting threaded pin is provided with a chamfer at the end portion matched with the first through hole.

5. The springless quick limit device according to claim 1, characterized in that: The limiting threaded pin includes a limiting threaded pin body and an annular portion arranged on the limiting threaded pin body. The annular portion and the guide sleeve are matched with multi-thread threads and leads, so that the limiting threaded pin can be extended or retracted after the handle is rotated by at most 180°.

6. A springless quick limit device according to claim 5, characterized in that: The guide sleeve has a penetrating adapting cavity, the opening diameter of one end of the adapting cavity is adapted to the annular portion, and the opening diameter of the other end of the adapting cavity is adapted to the limiting threaded pin body.

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