Elastic clip-type fastening assembly and fastening method

Abstract

The application discloses a kind of elastic clamping type fastening assembly and fastening method, one of which, elastic clamping type fastening assembly, including first connected member, second connected member and fastener body, first connected member is equipped with first mounting hole, second connected member is equipped with second mounting hole, fastener body is arranged in first mounting hole and second mounting hole, for fastening first connected member and second connected member;Fastener body includes stem, spring and blocking assembly, spring and blocking assembly are both arranged on stem;When blocking assembly is upper stopper and lower stopper, upper stopper, lower stopper are all set on stem, both ends of spring are connected on upper stopper and lower stopper respectively, spring is in compression state after installation in place.When blocking assembly is ring body, ring body includes circular ring, first flat washer arranged above circular ring, second flat washer arranged below circular ring, both ends of spring are connected on stem and second flat washer of ring body respectively.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fasteners, in particular to a spring clamping type fastening assembly and a spring fastening method. BACKGROUND

[0002] A general term for a kind of mechanical parts used when two or more components are fastened and connected into a whole is fastener. Fasteners are widely used, and the most common fastener is fastened using threads, which ensures the required clamping force of the connected parts by controlling the fastening axial force (clamping force) of the threads. This fastening method will lose clamping force and cause fastening failure after a long period of installation, or due to vibration, temperature change, etc. At the same time, when fastening with threads, a tightening tool is required, and the actual tightening torque (clamping force) will vary within a certain range according to the accuracy of the tightening tool. For larger tightening torque and critical positions, a higher cost and higher accuracy tightening tool is usually used for tightening.

[0003] Therefore, it is necessary to solve the problem of easy loosening and failure of existing fasteners during use, and to maximize the conversion of the force applied by the fastener into clamping force. SUMMARY

[0004] To overcome the shortcomings of the prior art, the present application aims to provide a spring clamping type fastening assembly and a fastening method to solve the problems mentioned in the background.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] A spring clamping type fastening assembly, comprising a first connected part, a second connected part and a fastener body, the first connected part is provided with a first mounting hole, the second connected part is provided with a second mounting hole, the fastener body is arranged in the first mounting hole and the second mounting hole, and is used to fasten the first connected part and the second connected part; the fastener body comprises a rod body, a spring and a blocking assembly, and the spring and the blocking assembly are arranged on the rod body;

[0007] When the blocking assembly is an upper block and a lower block, the upper block and the lower block are sleeved on the rod body, and the two ends of the spring are connected to the upper block and the lower block respectively, and the spring is in a compressed state after installation;

[0008] When the blocking assembly is a ring body, the ring body comprises a circular ring, a first flat gasket arranged above the circular ring and a second flat gasket arranged below the circular ring, and the two ends of the spring are connected to the rod body and the second flat gasket of the ring body respectively.

[0009] Further, when the blocking assembly is an upper blocking block and a lower blocking block, the rod body comprises a first rod body, a second rod body, a third rod body and a fourth rod body, which are sequentially connected.

[0010] The cross section of the first rod body is circular; the cross section of the second rod body is a playground type composed of a rectangle and two arcs arranged on two opposite sides of the rectangle; the cross section of the third rod body is a square with rounded corners; and the cross section of the fourth rod body is circular.

[0011] The radius of the arc of the second rod body is smaller than the radius of the first rod body, the distance between the two straight lines of the second rod body, the distance between two opposite sides of the square of the third rod body and the diameter of the fourth rod body are the same.

[0012] Further, the blocking block comprises an upper blocking block and a lower blocking block, the upper blocking block is circular and has a through hole, the cross-sectional shape and the length-width size of the through hole are the same as those of the second rod body, so that the upper blocking block can move along the axial direction on the second rod body.

[0013] The lower blocking block is circular and has an inner hole, the lower blocking block is sleeved and fixed on the fourth rod body through the inner hole.

[0014] Further, the diameter of the inner hole of the lower blocking block is the same as the diameter of the fourth rod body, the outer diameter of the lower blocking block is the same as the diameter of the second mounting hole of the second connected member; the lower blocking block is provided with a groove, and the groove is used for limiting and guiding the spring.

[0015] Further, the diameter of the first mounting hole is the same as the diameter of the first rod body, the first mounting hole has a through key groove, the upper blocking block is provided with a boss, and the size of the key groove is the same as the shape of the boss of the upper blocking block.

[0016] Further, the diameter of the second mounting hole is the same as the diameter of the first rod body, and the second mounting hole is provided with a key groove with the same shape as the boss.

[0017] The height of the key groove is smaller than the depth of the second mounting hole, the bottom of the key groove is provided with a ring groove along the inner wall of the second mounting hole, one end of the ring groove is provided with an upward key groove, and the key groove has the same shape as the boss.

[0018] A spring fastening method comprises a spring clamping type fastening assembly as described above, and at least the following steps:

[0019] S1. Assembling the fastener body;

[0020] S2. The first connected piece is above the second connected piece, the first mounting hole of the first connected piece and the second mounting hole of the second connected piece are aligned;

[0021] S3. The fastener body is put into the first mounting hole and the second mounting hole, and the upper stop block upper surface is attached to the second rod body bottom surface;

[0022] S4. A rotating external force is applied to the rod body, the third rod body drives the upper stop block to rotate until the upper stop block cannot rotate;

[0023] S5. An upward external force is applied to the rod body, and the rod body as a whole moves upward until the third rod body is no longer at the same height as the upper stop block;

[0024] S6. A rotating external force is applied to the rod body, and the rod body as a whole rotates until the second rod body coincides with the through hole of the upper stop block;

[0025] S7. Stop applying external force to the rod body, and under the downward pressure formed by the spring, the rod body as a whole moves downward until the rod body flange surface contacts the surface of the first connected piece.

[0026] Further, the method of assembling the fastener body in step S1 at least includes the following steps:

[0027] 1) The upper stop block is assembled from one end of the fourth rod body until the upper surface of the upper stop block is attached to the lower surface of the second rod body; the cross section of the third rod body coincides with the through hole of the upper stop block, and the cross section of the second rod body does not match the through hole of the upper stop block;

[0028] 2) The spring is assembled into the rod body, and the upper end of the spring is attached to the lower surface of the upper stop block; the lower stop block is assembled into the rod body, and the lower stop block is fixed at the bottom end of the fourth rod body;

[0029] Further, in step S5, when the upper stop block is at the fourth rod body, the upward lifting force formed by the spring compression is transmitted to the second connected piece through the upper stop block to lift the second connected piece upward.

[0030] Further, in step S6, during the rotation of the rod body, the height position of the upper stop block does not change.

[0031] Compared with the prior art, the beneficial effects of the present application are as follows:

[0032] The application provides a fastener which is reliable, not easy to loosen and fail, and precise in clamping force, and does not need to use high-cost tools for installation, and has wide application range. When the fastener is installed on a connected part, the elastic force generated by spring compression is converted into clamping force on the connected part. By selecting springs of different specifications and controlling the spring compression amount, different clamping forces on the connected part can be achieved. The elastic force generated by spring compression can be accurately controlled, so that the clamping force on the connected part can be accurately controlled.

[0033] When a threaded fastener (including a bolt) is tightened, the tightening torque mainly overcomes the friction force of the threaded pair and the abutting end face, and only about 10% of the tightening torque is actually converted into clamping force. However, in the present application, the elastic force generated by spring compression can be fully converted into clamping force on the connected part after the fastener is installed in place.

[0034] During the use of a threaded fastener, failure may occur due to vibration, deformation of the connected part, etc., and the connected part must be fastened again by manually applying external force after failure. However, in the present application, the clamping force will not disappear under various conditions such as vibration, temperature change, deformation of the connected part, etc., as long as the fastener body parts are not broken and the spring is not failed (the elastic force disappears after spring compression). The breakage of the fastener and the failure of the spring can be effectively avoided by material selection, structure design, heat treatment, surface treatment, etc. of the fastener parts and the spring. After the fastener is installed on the connected part, it can be removed only by a specific step to stop fastening the connected part, and the random vibration of the connected part cannot cause the fastener body to loosen.

[0035] After a threaded fastener is tightened, it is subjected to various forces such as clamping force and radial shear force, and is easily broken by additional impact force. However, in the present application, the fastener is only subjected to axial clamping force after being installed on the connected part, and can withstand greater radial impact force and other additional external forces. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort based on these drawings.

[0037] Figure 1 It is a schematic diagram of the overall structure of embodiment 1 of the application.

[0038] Figure 2 It is a schematic diagram of the structure of the fastener body of embodiment 1 of the application.

[0039] Figure 3 Structure diagram of the fastener rod of Example 1 of the present application.

[0040] Figure 4 Structure diagram of the fastener rod of Example 1 of the present application. Figure 3 Cross-sectional view of A-A.

[0041] Figure 5 Structure diagram of the fastener rod of Example 1 of the present application. Figure 3 Cross-sectional view of B-B.

[0042] Figure 6 Structure diagram of the fastener rod of Example 1 of the present application. Figure 3 Cross-sectional view of C-C.

[0043] Figure 7 Structure diagram of the fastener rod of Example 1 of the present application. Figure 3 Cross-sectional view of D-D.

[0044] Figure 8 Structure diagram of the upper stopper of Example 1 of the present application.

[0045] Figure 9 Structure diagram of the upper stopper of Example 1 of the present application. Figure 8 Cross-sectional view of E-E.

[0046] Figure 10 Structure diagram of the lower stopper of Example 1 of the present application.

[0047] Figure 11 Structure diagram of the lower stopper of Example 1 of the present application. Figure 10 Cross-sectional view of F-F.

[0048] Figure 12 Structure diagram of the first mounting hole of Example 1 of the present application.

[0049] Figure 13 Structure diagram of the first mounting hole of Example 1 of the present application. Figure 12 Cross-sectional view of G-G.

[0050] Figure 14 Structure diagram of the second mounting hole of Example 1 of the present application.

[0051] Figure 15 Structure diagram of the second mounting hole of Example 1 of the present application. Figure 14 Cross-sectional view of H-H.

[0052] Figure 16 Structure diagram of the upper stopper of Example 2 of the present application.

[0053] Figure 17 Structure diagram of the upper stopper of Example 2 of the present application. Figure 16 Cross-sectional view of I-I.

[0054] Figure 18 Cross-sectional view of J-J. Figure 17

[0055] ​Figure 19 A structure diagram of the upward thrust F1 and the downward pressure F2 of the spring in Embodiment 2 of the present application.

[0056] Figure 20 A structure diagram of the fastener body when the fastener is fastened to the connected member with a small height and a through hole in Embodiment 2 of the present application.

[0057] Figure 21 A structure diagram of the fastener body when the fastener is fastened to the connected member with a small height and a through hole in Embodiment 2 of the present application.

[0058] Figure 22 A structure diagram of the fastener body when the fastener is fastened to the connected member with a small height and a through hole in Embodiment 2 of the present application.

[0059] Figure 23 A structure diagram of the fastener body when the fastener is fastened to the connected member with a small height and a through hole in Embodiment 2 of the present application. Figure 22 A sectional view along the K-K direction.

[0060] Figure 24 A structure diagram of the fastener body when the fastener is fastened to the connected member with a small height and a through hole in Embodiment 2 of the present application.

[0061] Figure 25 A structure diagram of the fastener body when the fastener is fastened to the connected member with a small height and a through hole in Embodiment 2 of the present application.

[0062] Figure 26 A sectional view along the L-L direction. Figure 25 A sectional view along the L-L direction.

[0063] Figure 27 A structure diagram of the fastener body when the fastener is fastened to the connected member with a small height and a through hole in Embodiment 2 of the present application.

[0064] Figure 28 A sectional view along the M-M direction. Figure 27 A sectional view along the M-M direction.

[0065] In the drawings, the reference numerals are as follows:

[0066] 1 - first connected member; 11 - first mounting hole; 111 - first key groove; 2 - second connected member; 21 - second mounting hole; 211 - second key groove; 212 - ring groove; 213 - third key groove; 3 - fastener body; 31 - first rod body; 311 - rod body head; 312 - rod body boss; 32 - second rod body; 33 - third rod body; 34 - fourth rod body; 35 - upper stopper; 351 - boss; 36 - lower stopper; 37 - spring; 38 - fastener ring body; 381 - first flat washer; 382 - circular ring; 383 - second flat washer. DETAILED DESCRIPTION

[0067] To more clearly illustrate the present invention, the invention will be further described in detail below with reference to embodiments and accompanying drawings. Those skilled in the art should understand that the specific description below is illustrative rather than restrictive and should not be construed as limiting the scope of protection of the present invention.

[0068] In the description of this invention, it should be noted that the terms "inner," "outer," "upper," and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, unless otherwise explicitly specified and limited, the terms "installation," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0069] Example 1:

[0070] like Figure 1 The elastic clamping fastening assembly shown includes a first connected member 1, a second connected member 2, and as shown in the figure. Figure 2 The fastener body 3 shown is used to fasten the first connected component 1 and the second connected component 2. The fastener body 3 includes four rods (31, 32, 33, 34), a spring 37, an upper stop block 35, and a lower stop block 36. The first rods 31 to 34 are connected coaxially end-to-end in sequence. The spring 37, upper stop block 35, and lower stop block 36 are all mounted on the rods. The spring 37 passes through the fastener rod and is installed between the upper stop block 35 and the lower stop block 36. The two end faces of the spring 37 contact the end faces of the upper stop block 35 and the lower stop block 36, respectively, and the spring is limited by the upper stop block 35 and the lower stop block 36. When assembled and not subjected to any other additional external force, the spring 37 is in a compressed state.

[0071] For example Figures 3-7As shown, the outer wall of the rod bodies 31-34 is smooth without thread, the cross-sectional shapes of the four rod bodies are different, and the four rod bodies are integrally formed and have synchronous movement state. Among them, the cross section of the first rod body 31 is circular; the cross section of the second rod body 32 is a playground type composed of a rectangle and two arcs arranged on two opposite sides of the rectangle, specifically, the two arcs have the same center and the same radius, are symmetrical along the axis, and the two straight lines are parallel and equal along the axis; the cross section of the third rod body 33 is a square with rounded corners; and the cross section of the fourth rod body 34 is circular. The radius of the arc of the second rod body 32 is smaller than the radius of the first rod body 31, the distance between the two straight lines of the second rod body 32 is equal to the distance between two opposite sides of the square of the third rod body 33, and the distance between two opposite sides of the square of the third rod body 33 is equal to the diameter of the fourth rod body 34. The rod bodies are an integral whole, only the cross sections of the rod bodies are different, in order to more clearly describe the scheme and principle, the rod bodies are divided into several parts according to the different cross-sectional shapes of the rod bodies, which does not mean that the rod bodies are spliced by multiple segments.

[0072] Further as shown in the drawings Figure 8 and 9 As shown, the upper stop block 35 is a circular stop block sleeved on the rod body and is movable, and a through hole is formed in the upper stop block 35, and the shape of the through hole is exactly the same as the cross-sectional shape of the second rod body 32.

[0073] One side of the upper stop block 35 is provided with a boss 351, and the size of the boss 351 is the same as the size of the first key groove 111 of the first mounting hole 11 and the size of the second key groove 211 and the third key groove 213 of the second mounting hole 21. After the upper stop block 35 is installed on the rod body, when the cross section of the second rod body 32 coincides with the through hole of the upper stop block 35, the upper stop block 35 can move on the second rod body 32 along the axis direction of the rod body. When the symmetrical side of the through hole of the upper stop block 35 is attached to the symmetrical side of the third rod body 33, the upper stop block 35 cannot rotate alone along the axis of the rod body on the third rod body 33.

[0074] Further as shown in the drawings Figure 10 and 11 As shown, the lower stop block 36 is a circular stop block installed on and fixedly connected with the fourth rod body 34, and the two do not have relative displacement. The inner hole diameter of the lower stop block 36 is the same as the diameter of the fourth rod body 34, the outer diameter of the lower stop block 36 is the same as the diameter of the second mounting hole 21 of the second connected member 2, and the lower stop block 36 has a recess 361, and when the fastener is assembled, one end of the spring 37 extends into the recess 361 of the lower stop block 36, which can limit and guide the spring 37.

[0075] Further as shown in the drawings Figure 12 and 13As shown, the first connected component 1 has a first mounting hole 11 for mounting the fastener body 3. The diameter of the first mounting hole 11 is the same as the diameter of the first rod 31 of the fastener body. The first mounting hole 11 has a through first keyway 111. The shape and dimensions of the first keyway 111 are the same as the shape and dimensions of the boss 351 of the upper stop block 35. For example... Figure 14 and 15 As shown, the second connected member 2 has a second mounting hole 21 with the same diameter as the first rod 31. The second mounting hole 21 also has a second keyway 211 with the same size as the boss 351 of the upper stop block 35. The height of the second keyway 211 is less than the height of the second mounting hole 21. A certain length of annular groove 212 is formed at the bottom of the second keyway 211 along the inner wall of the second mounting hole 21. A third keyway 213 with an upward orientation is formed at the end of the annular groove 212. The shape and length and width of the third keyway 213 are the same as the shape and length and width of the boss 351 of the upper stop block 35. The height of the annular groove 212 is greater than the height of the boss 351 of the upper stop block 35 (the boss 351 of the upper stop block 35 can move within the annular groove 212).

[0076] Of course, two or more connected parts can be used to further enhance the connection tightness.

[0077] Example 2:

[0078] A spring-loaded fastening method, including a spring-loaded clamping fastening assembly as described in Example 1, comprises the following steps:

[0079] S1. When the first connected component 1 and the second connected component 2 need to be fastened, the first connected component 1 should be positioned above the second connected component 2. The fastener body 3 needs to be assembled before fastening the first connected component 1 and the second connected component 2.

[0080] The assembly steps for fastener body 3 are as follows:

[0081] 1. For example Figures 16-18 As shown, the upper stop block 35 is inserted from one end of the fourth rod 34 until its upper surface contacts the lower surface of the second rod 32. The cross-section of the third rod 33 coincides with the through hole of the upper stop block 35, while the cross-section of the second rod 32 does not match the through hole of the upper stop block 35. Therefore, the upper stop block 35 cannot pass the second rod 32 after passing the third rod 33. At this point, the lower surface of the second rod 32 is in contact with the upper surface of the upper stop block 35, blocking it from moving further towards the rod flange face.

[0082] 2. Insert the spring 37 into the rod body, with the upper end of the spring 37 attached to the lower plane of the upper stop block 35.

[0083] 3. The lower block 36 is installed in the rod body, the lower block 36 is fixed on the fourth rod body 34 and close to the bottom end of the fourth rod body 34, the lower block 36 and the fourth rod body 34 can be fixed and connected by welding, installing a snap ring, installing a check ring and the like. At this time, the lower end of the spring 37 is attached to the groove 361 of the lower block 36, the spring 37 is limited between the upper block 35 and the lower block 36, and since the distance between the upper block 35 and the lower block 36 is less than the length of the spring 37 without external force, the spring 37 is in a compressed state at this time.

[0084] The elastic force generated by the compression of the spring 37 acts upward on the upper block 35, forming an upward jacking force F1 on the upper block 35. The elastic force generated by the compression of the spring 37 acts downward on the lower block 36, forming a downward pressure F2 on the lower block 36, the lower block 36 and the fourth rod body 34 are fixedly connected, and the downward pressure F2 is simultaneously transmitted to the rod body.

[0085] S2. After the fastener body 3 is assembled, the first mounting hole 11 of the first connected piece 1 and the second mounting hole 21 of the second connected piece 2 are aligned, the first key groove 111 is aligned with the second key groove 211, and then the fastener body 3 is installed on the first connected piece 1 and the second connected piece 2.

[0086] S3. The fastener body 3 is placed into the first mounting hole 11 and the second mounting hole 21, the boss of the upper block 35 extends into the first key groove 111 of the first mounting hole 11 and the second key groove 211 of the second mounting hole 21, until the boss 351 of the upper block 35 of the fastener contacts the bottom of the second key groove 211 of the second mounting hole 21, and the upper block 35 cannot continue to move downward. At this time, the cross section of the second rod body 32 does not match the through hole of the upper block 35, and the rod body is blocked by the upper block 35 and cannot continue to move downward. At this time, the flange surface of the rod body is still a certain distance away from the surface of the first connected piece 1.

[0087] At this time, the upper surface of the upper block 35 is attached to the bottom surface of the second rod body 32, the through hole of the upper block 35 extends into the third rod body 33, and the two symmetrical planes of the third rod body 33 are attached to the symmetrical parallel planes of the through hole of the upper block 35. When the rod body rotates, the third rod body 33 will drive the upper block 35 to rotate at the same time.

[0088] S4. A rotating external force is applied to the fastener body 3, the third rod body 33 of the fastener drives the upper block 35 to rotate at the same time, the boss 351 of the upper block 35 rotates in the ring groove 212 of the second mounting hole 21, and the rotating external force is stopped after the boss 351 of the upper block 35 rotates to the end of the ring groove 212. At this time, the boss 351 of the upper block 35 cannot continue to rotate, the upper block 35 also cannot continue to rotate, and the third rod body 33 and the entire rod body also cannot continue to rotate.

[0089] As Figure 19As shown, the upward external force is applied to the fastener body 3, the rod body moves upward as a whole, the upper stopper 35 also moves upward under the upward lifting force F1 formed by the elastic force of the compression spring 37, the boss 351 of the upper stopper 35 enters the third key groove 213 at the end of the ring groove 212, and the boss 351 of the upper stopper 35 moves upward until the upper surface of the boss 351 is in contact with the top of the third key groove 213, so that the boss 351 cannot continue to move upward, and the upper stopper 35 also cannot continue to move upward, but the rod body can continue to move upward.

[0090] S5. The upward external force is continuously applied to the rod body, and the rod body continues to move upward as a whole until the third rod body 33 is no longer at the same height as the upper stopper 35, and the upward lifting force F1 formed by the elastic force of the compression spring 37 is transmitted to the second connected member 2 through the upper stopper 35 after the through hole of the upper stopper 35 is in the region of the fourth rod body 34, thereby forming upward lifting of the second connected member 2. The boss of the upper stopper 35 moves upward to the top of the key groove 213 of the second mounting hole, and the upper stopper 35 cannot continue to move upward.

[0091] S6. The upward movement of the rod body is stopped, and the through hole of the upper stopper 35 is in contact with the fourth rod body 34 at this time. Since the cross section of the fourth rod body 34 is circular, and the diameter of the fourth rod body 34 is equal to the distance between the two parallel surfaces of the through hole of the upper stopper 35, the fourth rod body 34 will not rotate when it rotates (at the same time, the boss 351 of the upper stopper 35 is in the third key groove 213, which limits the rotational movement of the upper stopper 35). A rotating external force is applied to the rod body to rotate the rod body as a whole until the cross section of the second rod body 32 coincides with the through hole of the upper stopper 35 (during the rotation of the rod body, the position of the upper stopper 35 does not change).

[0092] S7. The external force applied to the rod body is stopped, and the rod body moves downward as a whole under the downward pressure F2 formed by the spring 37, until the flange surface of the rod body contacts the surface of the first connected member 1 (the outer diameter of the flange surface of the rod body is larger than the diameter of the first mounting hole 11, so the flange surface of the rod body cannot enter the first mounting hole 11), and the rod body as a whole cannot continue to move downward. At this time, the spring 37 is still in a compressed state, and the downward pressure F2 formed by the elastic force of the spring 37 acts on the lower stopper 36 and is transmitted to the rod body, and then is transmitted to the first connected member 1 through the flange surface of the fastener body 3.

[0093] At this time, the installation of the fastening assembly is completed, and the fastener body 3 is installed on the connected members as Figure 19As shown, after the fastener body 3 is installed, the upper block 35 through hole is in the second rod body 32 area, the upper block 35 boss 351 is in the third key groove 213, the spring 37 compression generates the upward lifting force F1 acting on the upper block 35, which is transmitted to the second connected component 2 through the upper block 35, forming the upward lifting of the second connected component 2; the spring 37 compression generates the downward pressure F2 acting on the lower block 36, which is transmitted to the rod body and the fastener flange surface, and then the downward pressure F2 is transmitted to the first connected component 1 through the fastener body 3 flange surface, forming the downward pressure on the first connected component 1. Through the downward pressure F2 on the first connected component 1 and the upward lifting force F1 on the second connected component 2, the purpose of fastening the first connected component 1 and the second connected component 2 is achieved. At the same time, the first rod body 31 diameter is the same as the first installation hole 11 diameter of the first connected component 1, which can prevent the first connected component 1 from moving along the radial direction of the first installation hole 11 after fastening. If the length of the first rod body 31 is greater than the height of the first installation hole 11 of the first connected component 1, the first rod body 31 partially extends into the second installation hole 21 of the second connected component 2, and the diameter of the first rod body 31 is also the same as the diameter of the second installation hole 21 of the second connected component 2, which can also prevent the second connected component 2 from moving along the radial direction of the second installation hole 21 after fastening. If the length of the first rod body 31 is less than the height of the first installation hole 11 of the first connected component 1, the first rod body 31 does not extend into the second installation hole 21 of the second connected component 2, and at this time the outer diameter of the lower block 36 is the same as the diameter of the second installation hole 21 of the second connected component 2, which can prevent the second connected component 2 from moving along the radial direction of the second installation hole 21 after fastening through the lower block 36. If multiple fastener bodies 3 simultaneously fasten the first connected component 1 and the second connected component 2, it has better effect on preventing the first connected component 1 and the second connected component 2 from moving along the radial direction of the installation hole.

[0094] If the fastener body 3 installed on the connected component needs to be removed, the steps are as follows:

[0095] 1. Apply upward force to the rod body to move the rod body upward as a whole until the through hole of the upper block 35 is in the fourth rod body 34 area.

[0096] 2. Apply a rotating force to the rod body to rotate the rod body as a whole until the through hole of the upper block 35 does not coincide with the second rod body 32 cross section, and the third rod body 33 cross section is in the through hole of the upper block 35.

[0097] 3. Stop applying external force to the rod body, and under the action of the compression spring 37, the rod body moves downward as a whole until the lower surface of the second rod body 32 is in contact with the upper surface of the upper block 35. At this time, the boss 351 of the upper block 35 is still in the third key groove 213 of the second connected component 2 and cannot rotate.

[0098] 4、When the second rod body 32 lower surface is attached to the upper surface of the upper stop block 35, downward force is applied to the rod body, and the rod body as a whole moves downward. At this time, the second rod body 32 drives the upper stop block 35 to move downward at the same time, until the lower surface of the boss 351 of the upper stop block 35 is attached to the lower surface of the ring groove 212 of the second connected component 2. The upper stop block 35 cannot continue to move downward, and the rod body as a whole cannot continue to move downward, so the downward force applied to the rod body is stopped.

[0099] 5、At this time, the through hole of the upper stop block 35 is in the third rod body 33 area, and the symmetrical parallel side surface of the third rod body 33 is attached to the symmetrical plane side surface of the through hole of the upper stop block 35, so that the rod body can drive the upper stop block 35 to rotate. The rod body is driven by the upper stop block 35 to rotate at the same time, until the boss 351 of the upper stop block 35 rotates to the second key groove 211 of the second connected component 2. The upper stop block 35 and the rod body as a whole cannot continue to rotate, so the rotation of the external force is stopped.

[0100] 6、The rod body is applied with upward external force, the boss 351 of the upper stop block 35 is in the second key groove 211 of the second connected component 2, and the upper stop block 35 and the rod body as a whole can move upward until the fastener body 3 is completely taken out.

[0101] In this embodiment, only one kind of elastic clamping type fastening assembly and its assembly and installation method are listed. According to the structure, size, required clamping force and other needs of the connected component, the structure and assembly and installation method of the fastener body 3 can be changed. For example, when the connected component with a small installation hole height and a through hole is fastened, the total length of the fastener body 3 needs to be shortened as much as possible, and the structure shown in the figure can be used, and the assembly and installation method is similar to the above, which will not be described. Figure 20

[0102] At the same time, the structures and names of the components of the fastener body 3 listed in this example are only for this example, and in actual cases, the fastener body 3 can have other structures and component names. In this example, the boss 351 of the upper stop block 35 has only one, which is to simply and clearly describe the entire structure and assembly and installation principle of the fastener body 3. According to the actual installation situation, the boss 351 can have multiple, and the key groove can also have multiple to adapt to the structure of the fastener body 3. The flange surface and the fastener head in this example are not described in detail, and the shape of the fastener head can have multiple structures.

[0103] Embodiment 3:

[0104] ​The difference between this embodiment and embodiment 1 is that the fastener body 3 comprises a ring body 38, a rod body and a spring 37. The ring body 38 comprises a hollow circular ring 382, and above the circular ring 382 is a first flat gasket 381 with a diameter larger than that of the circular ring 382 (towards the outer direction of the diameter line), and the diameter of the first flat gasket 381 is larger than that of the first mounting hole 11 of the first connected part 1; below the circular ring 382 is a second flat gasket 383 with a diameter smaller than that of the circular ring 382 (towards the inner direction of the diameter line), and the radius of the second flat gasket 383 is larger than that of the second mounting hole 21 of the second connected part 2, and also larger than the distance between the outer circle of the rod body boss 312 below the rod body and the axis.

[0105] The outer diameter of the rod body head 311 is equal to the inner diameter of the circular ring 382, the diameter of the rod body is equal to that of the second mounting hole 21, and the shape and length-width size of the rod body boss 312 are the same as those of the second key groove 211 and the third key groove 213 on the second mounting hole 21. The first connected part 1 has the first mounting hole 11, and the second connected part 2 has the second mounting hole 21, and the second key groove 211 is machined on the second mounting hole 21, and the length of the second key groove 211 is lower than the depth of the second mounting hole 21. The diameter of the first mounting hole 11 is larger than that of the second mounting hole 21. After the spring 37 is installed in place, it is located between the rod body head 311 and the second flat gasket 383.

[0106] The different serial numbers of the parts of the ring body 38 are for convenience of description in the examples, and in fact they are a unified whole. The different serial numbers of the parts of the rod body are for convenience of description in the examples, and in fact they are a unified whole. When the first connected part 1 and the second connected part 2 are fastened, the fastener body 3 does not need to be installed in advance.

[0107] Embodiment 4:

[0108] When the fastening assembly comprises the ring body 38, when the first connected part 1 and the second connected part 2 are fastened, the steps are as follows:

[0109] 1. Place the first connected part 1 above the second connected part 2, and align the first mounting hole 11 of the first connected part 1 with the second mounting hole 21 of the second connected part 2;

[0110] 2. Place the ring body 38 into the first mounting hole 11 and the second mounting hole 21 until the lower plane of the first flat gasket 381 above the ring body 38 contacts the surface of the first connected part 1, and the ring body 38 cannot continue to move downward, and at this time the lower plane of the second flat gasket 383 below the ring body 38 is still a certain distance away from the second mounting hole 21.

[0111] 3. Put the spring 37 into the ring 38, the lower end of the spring 37 contacts the upper surface of the second flat gasket 383 below the ring 38, at this time the spring 37 is in free state, the spring 37 can not continue to move down;

[0112] 4. Put the rod into the first mounting hole 11 and the second mounting hole 21, the rod boss 312 of the rod is aligned with the second key groove 211 on the second mounting hole 21. During the movement of the rod down, the upper end of the spring 37 contacts the lower end of the rod head 311, with the continuous movement of the rod down, the spring 37 begins to be compressed. When the lower surface of the rod boss 312 contacts the bottom of the second key groove 211, the rod can not continue to move down;

[0113] 5. Apply a rotating external force to the rod, the rod rotates, the rod boss 312 moves in the ring groove 212, until the rod boss 312 moves to the end of the ring groove 212, the rod boss 312 and the rod can not continue to rotate.

[0114] 6. Stop applying external force, at this time the spring 37 is in compressed state, the lower end of the spring 37 contacts the upper surface of the flat gasket 383 below the ring 38, the downward pressure generated by the compression of the spring 37 acts on the second flat gasket 383 below the ring 38, and through the ring 38 and the first flat gasket 381 above the ring 38, the downward pressure is transmitted to the first connected member 1, forming the downward pressure F2 on the first connected member 1.

[0115] The upper end of the spring 37 contacts the lower surface of the rod head 311, the upward lifting force generated by the compression of the spring 37 acts on the rod, so that the rod moves up, until the upper surface of the rod boss 312 contacts the top of the third key groove 213, the rod boss 312 and the rod can not continue to move up. At this time the upward lifting force generated by the compression of the spring 37 acts on the rod, and through the rod and the rod boss 312, the upward lifting force is transmitted to the second connected member 2, forming the upward lifting force F1 on the second connected member 2.

[0116] At this time the fastening of the first connected member 1 and the second connected member 2 is completed, by applying the downward pressure F2 to the first connected member 1 and the upward lifting force F1 to the second connected member 2, the purpose of fastening the first connected member 1 and the second connected member 2 is achieved.

[0117] When the first connected member 1 and the second connected member 2 are fastened and need to be loosened, specific steps are needed to achieve, which are as follows:

[0118] 1. Apply downward external force to the fastener rod, the rod and the rod boss 312 move downward until the lower plane of the rod boss 312 contacts the lower plane of the ring groove 212, at this time the fastener rod and the rod boss 312 cannot continue to move downward;

[0119] 2. Apply external force to the rod, the rod rotates and the rod boss 312 moves in the ring groove 212 until the rod boss 312 contacts the end of the ring groove 212.

[0120] 3. Stop applying external force, at this time the rod boss 312 of the rod is located at the second key groove 211 of the second mounting hole 21, the upward lifting force generated by the compression of the spring 37 acts on the rod, making the rod move upward until the spring 37 returns to the free state and is no longer compressed;

[0121] 4. Remove the rod, spring 37 and ring 38, and complete the loosening of the first connected member 1 and the second connected member 2.

[0122] Obviously, the above embodiments of the present application are only examples for more clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, on the basis of the above description, other different forms of changes or variations can also be made, and it is impossible to enumerate all the embodiments here. Any obvious changes or variations derived from the technical solutions of the present application still fall within the protection scope of the present application.

Claims

1. A spring clip fastener assembly, characterized by, The fastener body (3) includes a rod body, a spring (37) and a blocking component, and the spring (37) and the blocking component are arranged on the rod body. When the blocking component is an upper block (35) and a lower block (36), the upper block (35) and the lower block (36) are sleeved on the rod body, and the two ends of the spring (37) are connected to the upper block (35) and the lower block (36) respectively, and the spring (37) is in a compressed state after being installed in place. When the blocking component is a ring body (38), the ring body (38) includes a circular ring (382), a first planar gasket (381) arranged above the circular ring (382), and a second planar gasket (383) arranged below the circular ring (382), and the two ends of the spring (37) are connected to the rod body and the second planar gasket (383) of the ring body (38) respectively. When the blocking component is an upper block (35) and a lower block (36), the rod body includes a first rod body (31), a second rod body (32), a third rod body (33) and a fourth rod body (34), and the first rod body (31), the second rod body (32), the third rod body (33) and the fourth rod body (34) are connected in sequence. The cross section of the first rod body (31) is circular; the cross section of the second rod body (32) is a playground type composed of a rectangle and two arcs arranged on two opposite sides of the rectangle; the cross section of the third rod body (33) is a square with a rounded arc corner; and the cross section of the fourth rod body (34) is circular. The radius of the arc of the second rod body (32) is smaller than the radius of the first rod body (31), the distance between the two straight lines of the second rod body (32), the distance between two opposite sides of the square of the third rod body (33) and the diameter of the fourth rod body (34) are the same. The block includes an upper block (35) and a lower block (36), the upper block (35) is circular and has a through hole, the through hole has the same shape as the cross section of the second rod body (32) so that the upper block (35) can move along the axis direction on the second rod body (32). The lower block (36) is circular and has an inner hole, and the lower block (36) is sleeved and fixed on the fourth rod body (34) through the inner hole. The diameter of the inner hole of the lower block (36) is the same as the diameter of the fourth rod body (34), the outer diameter of the lower block (36) is the same as the diameter of the second installation hole (21) of the second connecting piece (2), and the lower block (36) is provided with a groove (361) for limiting and guiding the spring (37). ​ 2. A resilient clamping fastener assembly according to claim 1, wherein The diameter of the first mounting hole (11) is the same as that of the first rod body (31), the first mounting hole (11) is provided with a first key groove (111) penetrating through, the upper stop block (35) is provided with a boss (351), and the shape and length-width size of the first key groove (111) are the same as those of the boss (351) of the upper stop block (35).

3. A resilient clamping fastener assembly according to claim 2, wherein The diameter of the second mounting hole (21) is the same as that of the first rod body (31), and the second mounting hole (21) is provided with a second key groove (211) with the same shape and length-width size as the boss (351). The height of the second key groove (211) is smaller than the depth of the second mounting hole (21), the bottom of the second key groove (211) is provided with a ring groove (212) along the inner wall of the second mounting hole (21), one end of the ring groove (212) is provided with an upward third key groove (213), and the shape and length-width size of the third key groove (213) are the same as those of the boss (351).

4. An elastic fastening method characterized by, The elastic clamping type fastening assembly comprises the fastener body (3) and the first connected member (1) and the second connected member (2) connected by the fastener body (3), and at least comprises the following steps: S1. Assembling the fastener body (3); S2. The first connected member (1) is above the second connected member (2), and the first mounting hole (11) of the first connected member (1) is aligned with the second mounting hole (21) of the second connected member (2); S3. The fastener body (3) is placed in the first mounting hole (11) and the second mounting hole (21), and the upper surface of the upper stop block (35) is attached to the bottom surface of the second rod body (32); S4. The fastener body (3) is subjected to external rotation force, the third rod body (33) drives the upper stop block (35) to rotate, and the upper stop block (35) cannot rotate until the third rod body (33) is no longer at the same height as the upper stop block (35); S5. The fastener body (3) is subjected to upward external force, and the rod body as a whole moves upward until the third rod body (33) is no longer at the same height as the upper stop block (35); S6. The rod body is subjected to external rotation force, and the rod body as a whole rotates until the second rod body (32) is aligned with the through hole of the upper stop block (35); S7. Stop applying external force to the rod body, and under the downward pressure formed by the spring (37), the rod body as a whole moves downward until the flange surface of the rod body contacts the surface of the first connected member (1).

5. The method of claim 4, wherein The method for assembling the fastener body (3) in step S1 at least comprises the following steps: 1) The upper stop block (35) is assembled from one end of the fourth rod body (34) until the upper surface of the upper stop block (35) is attached to the lower surface of the second rod body (32); the cross section of the third rod body (33) is aligned with the through hole of the upper stop block (35), and the cross section of the second rod body (32) does not match the through hole of the upper stop block (35). 2) the spring (37) is installed in the rod body, the upper end of the spring (37) is attached to the lower plane of the upper stop block (35); the lower stop block (36) is installed in the rod body, the lower stop block (36) is fixed at the bottom end of the fourth rod body (34), and the spring (37) is in a compressed state.

6. The method of claim 5, wherein In step S5, when the upper stop block (35) is at the fourth rod body (34), the upward lifting force formed by the elastic force generated by the compression of the spring (37) is transmitted to the second connected member (2) through the upper stop block (35), so as to upwardly lift the second connected member (2).

7. The method of claim 5, wherein the elastic fastening system is a hook and loop fastening system. In step S6, during the rotation of the rod body, the height position of the upper stop block (35) is unchanged.

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