Detachable reuse type assembly pre-hanging device and using method thereof

Abstract

The invention discloses a detachable reuse type assembly pre-hanging device and a using method, and the device comprises a ratchet rebounding assembly which comprises an upper guide rail sleeve, a toothed bar, a toothed bar button, a lower guide rail sleeve and a spring; the upper guide rail sleeve and the lower guide rail sleeve are connected through threads, the toothed bar is arranged in the upper guide rail sleeve and the lower guide rail sleeve, oblique teeth are arranged on the toothed bar, a notch is formed in the toothed bar button, and a sawtooth-shaped edge is arranged at the tail end of the toothed bar button; the adjustable limiting structure assembly comprises an ejector rod, a flange sleeve, a movable limiting block and a leather ring. The movable limiting block is rotationally installed at the lower end of the lower guide rail sleeve, the leather ring is installed in a groove of the adjustable limiting block and provides retraction force for the movable limiting block after expansion, and the flange sleeve is connected with the lower guide rail sleeve through threads. Through mutual cooperation of the ratchet rebounding structure and the adjustable limiting structure, quick preassembling of an assembled object is achieved, and the quick preassembling device has the advantages of being easy to mount and dismount and capable of being repeatedly used.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle assembly manufacturing, and in particular to a detachable and reusable assembly pre-hanging device and a use method thereof. Background Art

[0002] The assembly of automobile products is one of the most important process links in the automobile manufacturing process. With the increasing requirements for automobile platformization, more and more parts need to be arranged to take into account the many models within the platform. How to differentiate the parts for a single model while taking into account the platform architecture to meet the requirements of assembly process, styling, performance, safety, etc. and improve product competitiveness has always been one of the difficulties in design.

[0003] At present, when facing the problem of assembling parts with heavy weight or complex assembly paths during the design stage of automobiles, a pre-hanging structure is usually designed on the fixing parts. When workers assemble, they use the pre-designed pre-hanging structure for preliminary fixing before subsequent assembly. This solution has a fixed structure, occupies the design space of the whole vehicle, and increases the cost of the whole vehicle. Different models under the same platform have different layout plans, which makes the design of the pre-hanging structure more limited, and often leads to design redundancy problems. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a detachable and reusable assembly pre-hanging device and a method of using the same, which can realize rapid pre-installation of assembly items through the cooperation of a ratchet rebound structure and an adjustable limit structure, and has the advantages of simple installation and disassembly and reusability.

[0005] The technical solution of the present invention is as follows:

[0006] In a first aspect of the present invention, a detachable and reusable assembly pre-hanging device is provided, comprising:

[0007] The ratchet rebound assembly comprises an upper guide rail sleeve, a gear rod, a gear rod button, a lower guide rail sleeve and a spring; the upper guide rail sleeve and the lower guide rail sleeve are connected by threads, the gear rod is placed in the upper guide rail sleeve and the lower guide rail sleeve, the gear rod is provided with oblique teeth, the gear rod button is provided with a notch and a serrated edge is provided at the end; the oblique teeth, the notch and the serrated edge cooperate to push out or recycle the gear rod;

[0008] The adjustable limit structure component includes an adjustable limit structure component, including a push rod, a flange sleeve, a movable limit block and a leather ring; the movable limit block is rotatably installed at the lower end of the lower guide rail sleeve, the leather ring is installed in the groove of the adjustable limit block to provide a retraction force for the movable limit block after expansion, and the flange sleeve is connected to the lower guide rail sleeve through a thread.

[0009] In some embodiments of the present invention, a guide rail is provided on the inner wall of the upper guide rail sleeve, the guide rail cooperates with a notch on the gear rod button, and the gear rod button performs linear motion in the upper guide rail sleeve.

[0010] In some embodiments of the present invention, the edge of the guide rail is serrated, and the edge of the guide rail, the bevel teeth on the gear rod and the serrated edge of the gear rod button cooperate with each other to convert the linear motion of the gear rod into rotational motion.

[0011] In some embodiments of the present invention, both ends of the lower guide rail sleeve are provided with threads, wherein the upper end thread is connected to the upper guide rail sleeve, and the lower end thread is connected to the flange sleeve.

[0012] In some embodiments of the present invention, the lower end of the lower guide rail sleeve is fixedly connected to a fixing sleeve, and after the lower guide rail sleeve is connected to the flange sleeve, the fixing sleeve extends from the end of the flange sleeve.

[0013] In some embodiments of the present invention, three through holes are provided on the fixed sleeve, and a movable limiting block is installed corresponding to each of the through holes. The movable limiting block is rotatably connected to the through hole position on the fixed sleeve via a hinge.

[0014] In some embodiments of the present invention, one end of the push rod is conical, and a limiting ring is provided at the other end. The outer circumference of the limiting ring is serrated, and one side of the limiting ring abuts against the spring, and the other side abuts against the lower end of the gear rod.

[0015] In some embodiments of the present invention, the movable limit block is provided with a push rod contact matching surface and an apron installation groove, the push rod contact matching surface matches the conical surface of the push rod end, and the apron is installed in the apron installation groove.

[0016] In some embodiments of the present invention, a slide groove is provided on the inner wall surface of the lower guide rail sleeve, and the slide groove matches the serrated outer circumference of the limiting ring.

[0017] In a second aspect of the present invention, a method for using a detachable and reusable assembly pre-hanging device is provided, comprising:

[0018] Pass the lower end of the lower guide rail sleeve through the mounting holes on the fixed sheet metal and the component to be assembled;

[0019] Press the gear rod button, the gear rod pushes out the ejector rod, and the conical surface of the ejector rod is used to push the movable limit block out of the lower guide rail sleeve;

[0020] Rotate the flange sleeve and use the flange sleeve and the movable limit block to clamp the fixed sheet metal and the parts to be assembled;

[0021] After installing the assembly parts, press the gear rod button again, and the push rod will be retracted under the elastic force of the spring. At the same time, under the action of the leather ring, the movable limit block will rotate and shrink.

[0022] One or more technical solutions of the present invention have the following beneficial effects:

[0023] (1) The ratchet rebound structure provided in the present invention can enable the ejector rod to quickly switch between the ejection and recovery states, and the adjustable limit structure provided can achieve the limit and tightening between the fixed sheet metal and the component to be installed, thereby realizing the rapid pre-installation of assembled items.

[0024] (2) The present invention can realize the rapid disassembly and reuse of the present invention through the above structure. When workers assemble, they can use the device to quickly pre-install the assembly items, which greatly saves manpower. At the same time, the structure can be widely used in workshops as a standard kit. The expanded radius range of the movable limit block of the present invention is the length of the outer arc radius of the movable limit block. In the thread model above M4, it fully meets the hole matching requirements. The use of this invention can provide a new design idea when optimizing the platform design of the whole vehicle and taking into account the complex redundancy of the pre-hanging structure caused by the differentiated layout of the vehicle model, which can reduce the cost of the product and enhance the product strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the disassembled parts of the detachable and reusable assembly pre-hanging device of the present invention;

[0026] Figure 2 It is a schematic diagram of the disassembled parts of the ratchet rebound assembly of the present invention;

[0027] Figure 3 is a cross-sectional view of the upper guide rail sleeve of the present invention;

[0028] Figure 4 It is a schematic diagram of the gear rod and the gear rod button of the present invention after being assembled;

[0029] Figure 5 It is a cross-sectional view of the ratchet rebound assembly of the present invention after assembly;

[0030] Figure 6 It is a schematic diagram of the disassembled parts of the adjustable limiting structure assembly of the present invention;

[0031] Figure 7 It is a structural schematic diagram of the movable limit block of the present invention;

[0032] Figure 8 It is a schematic diagram of the contracted state and the expanded state of the movable limit block of the present invention;

[0033] Fig. 9It is a cross-sectional view of the detachable and reusable assembly pre-hanging device of the present invention after assembly;

[0034] Fig.10 It is a schematic diagram of the pre-hanging device of the present invention before and after installation.

[0035] In the figure:

[0036] 1. ratchet rebound assembly; 11. upper guide rail sleeve; 111. guide rail; 112. guide rail edge; 113. thread; 12. gear rod; 121. oblique teeth; 13. gear rod button; 131. serrated edge; 132. notch; 14. lower guide rail sleeve; 141. slide groove; 142. through hole; 143. fixed sleeve; 144. upper end thread; 145. lower end thread; 15. spring;

[0037] 2. Adjustable limit structure assembly; 21. Ejector rod; 211. Limiting ring; 22. Movable limit block; 221. Hinge mounting hole; 222. Ejector rod contact matching surface; 223. Leather ring mounting groove; 23. Hinge; 24. Leather ring; 25. Flange sleeve;

[0038] 3. Fix the sheet metal; 4. Parts to be assembled. DETAILED DESCRIPTION

[0039] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0040] Example 1

[0041] In a typical embodiment of the present invention, a detachable and reusable assembly pre-hanging device is provided, such as Figure 1-Figure 6 Combination Fig. 9 As shown, including:

[0042] The ratchet rebound assembly 1 comprises an upper guide sleeve 11, a gear rod 12, a gear rod button 13, a lower guide sleeve 14 and a spring 15; the upper guide sleeve 11 and the lower guide sleeve 14 are connected by a thread 113, the gear rod 12 is placed in the upper guide sleeve 11 and the lower guide sleeve 14, the gear rod 12 is provided with oblique teeth 121, the gear rod button 13 is provided with a notch 132 and a serrated edge 131 is provided at the end; the oblique teeth 121, the notch 132 and the serrated edge 131 cooperate to eject or recycle the gear rod 12;

[0043] The adjustable limit structure assembly 2 includes a push rod 21, a flange sleeve 25, a movable limit block 22 and a leather ring 24; the movable limit block 22 is rotatably mounted on the lower end of the lower guide rail sleeve 14, and the leather ring 24 is installed in the groove of the adjustable limit block to provide a retraction force for the movable limit block after expansion, and the flange sleeve 25 is connected to the lower guide rail sleeve 14 through threads.

[0044] like Figure 3 As shown, a guide rail 111 is provided on the inner wall of the upper guide rail sleeve 11, and the guide rail 111 cooperates with the notch 132 on the gear rod button 13, and the gear rod button 13 performs linear motion in the upper guide rail sleeve 11. Further, the guide rail edge 112 is serrated, and the guide rail edge 112, the bevel teeth 121 on the gear rod 12, and the serrated edge 131 of the gear rod button 13 cooperate with each other to convert the linear motion of the gear rod 12 into rotational motion.

[0045] Specifically, there are eight notches 132 on the side of the gear rod button 13, and the gear rod button 13 only performs linear motion in the upper guide rail sleeve 11. The end of the gear rod button 13 has a circle of serrated edges 131, and the gear rod 12 has only four bevel teeth, and the bevel teeth are in the same direction. The bevel teeth can convert the linear motion of the gear rod 12 into rotational motion. The guide rail structure in the upper guide rail sleeve 11 allows the notches 132 on the gear rod button 13 to perform linear motion in the guide rail 111, and the four bevel teeth of the gear rod 12 slide up and down on the serrated edges 131.

[0046] In this embodiment, threads are provided at both ends of the lower guide rail sleeve 14 , wherein the upper end thread 144 is connected to the upper guide rail sleeve 11 , and the lower end thread 145 is connected to the flange sleeve 25 .

[0047] Furthermore, the lower end of the lower rail sleeve 14 is fixedly connected to the fixing sleeve 143. After the lower rail sleeve 14 is connected to the flange sleeve 25, the fixing sleeve 143 extends from the end of the flange sleeve 25. The diameter of the fixing sleeve 143 is smaller than the diameter of the lower rail sleeve 14. The position where the fixing sleeve 143 and the rail sleeve 14 are connected forms a cone surface, which abuts against one end of the spring 15. The spring provides resistance to the pressure of the gear rod button 13, so that the push rod 21 and the gear rod 12 can rebound. The push rod 21 and the gear rod 12 are in contact and fit, and there is linear motion and rotational motion around the axis between them.

[0048] Furthermore, three through holes 142 are provided on the fixed sleeve 143 , and a movable limiting block 22 is correspondingly installed at each of the through holes 142 . The movable limiting block 22 is rotatably connected to the through hole position on the fixed sleeve 143 via a hinge 23 .

[0049] In this embodiment, one end of the push rod 21 is conical, and the other end is provided with a limiting ring 211. The outer circumference of the limiting ring 211 is serrated. One side of the limiting ring 211 abuts against the spring 15, and the other side abuts against the lower end of the gear rod 12.

[0050] Furthermore, if Figure 7As shown, the movable stop block 22 is provided with a push rod contact matching surface 222 and a leather ring installation groove 223. The push rod contact matching surface 222 matches the conical surface at the end of the push rod 21, and the leather ring 24 is installed in the leather ring installation groove 223. The movable stop block 22 is also provided with a hinge installation hole 221 for installing the hinge 23. This structure can realize the rotation movement of the movable stop block 22. The push rod contact matching surface 222 is set as the main force-bearing surface when the push rod 21 is ejected. A conical limiting surface is formed between the movable limiting blocks 22 after installation. Through the conical structure of the limiting surface, the axial linear motion of the push rod 21 can be converted into the rotational outward expansion motion of the movable limiting block 22, thereby realizing the expansion of the limiting surface; the leather ring installation groove 223 is set, so that the leather ring 24 can be installed in the leather ring installation groove 223. When the push rod 21 is recovered, the leather ring provides resistance to the expansion pressure of the movable limiting block, so that the movable limiting block can be recovered, thereby realizing the contraction of the limiting surface. Figure 8 shown.

[0051] Furthermore, a slide groove 141 is provided on the inner wall surface of the lower guide rail sleeve 14, and the slide groove 141 matches the serrated outer circumference of the limiting ring 211, so that the push rod can only move in a straight line. Specifically, the serrated outer circumference of the limiting ring 211 is provided with eight notches, and the push rod 21 can only move in a straight line in the lower guide rail sleeve 14. The lower end of the gear rod 12 is a hollow structure, and the limiting ring 211 is separated from the upper end of the push rod 21 by a set distance, so that the upper end of the push rod 21 is placed on the lower end of the gear rod 12, and the limiting ring 211 abuts against the lower end of the gear rod 12, and the push rod 21 and the gear rod 12 are in contact connection.

[0052] The working principle of the detachable and reusable assembly pre-hanging device provided in this embodiment is as follows:

[0053] In the initial state, the tooth tips of the helical teeth of the gear rod 12 are located inside the guide rail 111. When the gear rod button 13 is pressed for the first time, the gear rod 12 enters the compression stage along with the gear rod button 13. The gear rod button 13 is continued to be pressed. When the gear rod 12 slides to the end of the guide rail 111 that is separated from the upper guide rail sleeve 11, the gear rod button 13 is released. One end of the spring 15 contacts the conical surface of the lower guide rail sleeve 14, and the other end contacts the limiting ring on the ejector rod 21. The gear rod 12 is compressed and rebounded under the elastic force of the spring. The elastic force is transmitted from the ejector rod 21 to the gear rod 12, and the gear rod 12 contacts the guide rail edge 112, rotates a certain angle, and rebounds into the shallower guide rail edge 112, causing the gear rod 12 to not rebound that long, and the gear rod 12 will be in the ejected state.

[0054] When the gear rod button 13 is pressed for the second time, the tooth tip of the gear rod 12 will rotate back into the guide rail 111, and when the gear rod button 13 is released, the gear rod 12 will return to the initial position and be in the recovery state.

[0055] When the gear rod 12 is in the ejection state, the ejector rod 21 is also in the ejection state, and the conical structure of the ejector rod 21 will open the movable limit block 22, and the movable limit block 22 rotates around the axis of the connecting hinge 23, and the leather ring 24 is forced to expand, and the installation limit surface increases. The flange sleeve 25 is threadedly connected to the lower guide rail sleeve 14. By rotating the flange sleeve 25, the gap between the flange sleeve 25 and the movable limit block can be adjusted to achieve the installation of the pre-hanging device.

[0056] Press the gear button 13 for the second time, the push rod 21 will be in the retracted state, the leather ring 24 rebounds, the movable limit block 22 is compressed, and is synchronously retracted into the lower guide rail sleeve 14 with the push rod 21. After adjusting the flange sleeve 25, the disassembly of the pre-hanging tool can be completed.

[0057] Example 2

[0058] In a typical embodiment of the present invention, a method for using a detachable and reusable assembly pre-hanging device is provided, such as Fig.10 As shown, including:

[0059] Pass the lower end of the lower guide rail sleeve 14 through the mounting holes on the fixed sheet metal 3 and the component to be assembled 4;

[0060] Press the gear rod button 13, the gear rod 12 pushes out the push rod 21, and the conical surface of the push rod 21 pushes the movable limit block 22 out of the lower guide rail sleeve 14;

[0061] Rotate the flange sleeve 25, and use the flange sleeve 25 and the movable limit block 22 to clamp the fixed sheet metal 3 and the component to be assembled 4;

[0062] After the assembly components are installed, the gear rod button 13 is pressed again, and the push rod 21 is retracted under the elastic force of the spring 15 , and at the same time, under the action of the leather ring 24 , the movable limit block 22 is rotated and retracted.

[0063] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A detachable and reusable assembly pre-hanging device, characterized in that: include: The ratchet rebound assembly comprises an upper guide rail sleeve, a gear rod, a gear rod button, a lower guide rail sleeve and a spring; the upper guide rail sleeve and the lower guide rail sleeve are connected by threads, the gear rod is placed in the upper guide rail sleeve and the lower guide rail sleeve, the gear rod is provided with oblique teeth, the gear rod button is provided with a notch and a serrated edge is provided at the end; the oblique teeth, the notch and the serrated edge cooperate to push out or recycle the gear rod; The adjustable limit structure assembly includes a push rod, a flange sleeve, a movable limit block and a leather ring; the movable limit block is rotatably installed at the lower end of the lower guide rail sleeve, the leather ring is installed in the groove of the adjustable limit block to provide a retraction force for the movable limit block after expansion, and the flange sleeve is connected to the lower guide rail sleeve through a thread.

2. The detachable and reusable assembly pre-hanging device according to claim 1, characterized in that: A guide rail is arranged on the inner wall of the upper guide rail sleeve, and the guide rail matches with the notch on the gear rod button, and the gear rod button performs linear motion in the upper guide rail sleeve.

3. The detachable and reusable assembly pre-hanging device according to claim 2, characterized in that: The edge of the guide rail is serrated, and the edge of the guide rail, the oblique teeth on the gear rod and the serrated edge of the gear rod button cooperate with each other to convert the linear motion of the gear rod into rotational motion.

4. The detachable and reusable assembly pre-hanging device according to claim 1, characterized in that: Both ends of the lower guide rail sleeve are provided with threads, wherein the upper end thread is connected to the upper guide rail sleeve, and the lower end thread is connected to the flange sleeve.

5. The detachable and reusable assembly pre-hanging device according to claim 4, characterized in that: The lower end of the lower guide rail sleeve is fixedly connected to the fixing sleeve. After the lower guide rail sleeve is connected to the flange sleeve, the fixing sleeve extends out from the end of the flange sleeve.

6. The detachable and reusable assembly pre-hanging device according to claim 5, characterized in that: The fixed sleeve is provided with three through holes, and a movable limiting block is correspondingly installed at each of the through holes. The movable limiting block is rotatably connected to the through hole position on the fixed sleeve through a hinge.

7. The detachable and reusable assembly pre-hanging device according to claim 1, characterized in that: One end of the push rod is conical, and the other end is provided with a limiting ring. The outer circumference of the limiting ring is sawtooth-shaped. One side of the limiting ring abuts against the spring, and the other side abuts against the lower end of the gear rod.

8. The detachable and reusable assembly pre-hanging device according to claim 7, characterized in that: The movable limit block is provided with a push rod contact matching surface and an apron installation groove. The push rod contact matching surface matches the conical surface of the push rod end, and the apron is installed in the apron installation groove.

9. The detachable and reusable assembly pre-hanging device according to claim 7, characterized in that: A slide groove is arranged on the inner wall surface of the lower guide rail sleeve, and the slide groove matches the serrated outer circumference of the limiting ring.

10. A method for using the detachable and reusable assembly pre-hanging device according to any one of claims 1 to 9, characterized in that: include: Pass the lower end of the lower guide rail sleeve through the mounting holes on the fixed sheet metal and the component to be assembled; Press the gear rod button, the gear rod pushes out the ejector rod, and the conical surface of the ejector rod is used to push the movable limit block out of the lower guide rail sleeve; Rotate the flange sleeve and use the flange sleeve and the movable limit block to clamp the fixed sheet metal and the parts to be assembled; After installing the assembly parts, press the gear rod button again, and the push rod will be retracted under the elastic force of the spring. At the same time, under the action of the leather ring, the movable limit block will rotate and shrink.

Images