Elastic locking structure

Abstract

The present application belongs to the technical field of workpiece fixing parts, and particularly relates to an elastic locking structure, which comprises a cap lock pin, a pressure locking seat and an elastic lock piece. The lock groove of the cap lock comprises a vertical groove section and an arc groove section. The elastic lock piece has a rod-shaped rod body which can extend into the lock groove. The elastic lock piece can be bent and deformed to generate elastic potential energy. The present scheme utilizes the rotation of the arc groove section to drive the deformation of the elastic lock piece and make the elastic lock piece accumulate elastic potential energy. When the elastic lock piece is in the locking position, the elastic lock piece can ensure the tension of the cap lock pin, so as to clamp the first locking workpiece and the second locking workpiece by the cooperation of the pressure locking seat and the top cap. When there are more locking workpieces between the first locking workpiece and the second locking workpiece, the cap lock pin can also be inserted and tensioned. The rotation amount of the elastic lock piece is less than 180 degrees, so that the elastic lock piece can be clamped into or out of the lock groove, which makes the disassembly more convenient.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of workpiece fixing parts, and particularly relates to an elastic locking structure. BACKGROUND

[0002] In the connecting structure of the motor frame and the slide cover plate, bolts are often used for fastening and fixing, but this way of fastening and fixing by bolts has the problems of great dismounting difficulty and rigidity between the fixed parts, and cannot buffer vibration. However, in the existing connecting working condition, the rigid connecting mode is often not needed, so it is necessary to design an elastic connecting mode and structure to realize elastic buffering and reduce the dismounting difficulty when necessary. SUMMARY

[0003] In order to solve the problem that the bolt structure cannot meet the elastic connecting working condition, the application provides an elastic locking structure.

[0004] The technical scheme adopted by the application is as follows:

[0005] An elastic locking structure comprises a capped locking nail, a pressure locking seat and an elastic locking piece.

[0006] One end of the capped locking nail is coaxially provided with a tubular section, and the other end of the capped locking nail is provided with a nail cap; a J-shaped locking groove is arranged on the side wall of the tubular section; the locking groove comprises a vertical groove section and an arc groove section which are in communication with each other, an unlocking position is formed at the intersection of the arc groove section and the vertical groove section, and a locking position is formed at the end of the arc groove section away from the vertical groove section; a balance position is formed in the arc groove section between the unlocking position and the locking position; the distance between the balance position and the nail cap is less than the distance between the unlocking position and the nail cap.

[0007] The elastic locking piece has a rod-shaped rod body which can extend into the locking groove; the elastic locking piece can be bent and deformed to generate elastic potential energy; with the forward rotation of the capped locking nail, the elastic locking piece can move from the unlocking position to the locking position through the balance position; with the reverse rotation of the capped locking nail, the elastic locking piece can move from the locking position to the unlocking position through the balance position.

[0008] The pressure locking seat has two mounting positions, and the two mounting positions are respectively used for mounting and fixing the two ends of the elastic locking piece, and a space for the capped locking nail to pass through and rotate is formed between the two mounting positions; the distance between the two mounting positions should be less than the length of the elastic locking piece, and the two ends of the elastic locking piece respectively extend out from the mounting positions by a part, so as to ensure the deformation allowance of the elastic locking piece in the deformation process, so that the two ends of the elastic locking piece will not be out of the mounting positions after the deformation of the elastic locking piece.

[0009] When connecting two or more locking pieces, the capped locking nail passes through all the locking pieces, and the nail cap and the abutting locking seat are respectively abutted on the outermost two locking pieces.

[0010] In use, since the arc groove section is distributed along the circumference of the capped locking nail, in the rotation process of the capped locking nail, the rotation of the arc groove section can drive the deformation of the elastic locking piece and make the elastic locking piece accumulate elastic potential energy. When the elastic locking piece is in the locking position, the elastic locking piece can be tensioned on the capped locking nail, so as to clamp the first locking piece and the second locking piece by the cooperation of the abutting locking seat and the top cap. When there are more locking pieces between the first locking piece and the second locking piece, the capped locking nail also passes through and is tensioned.

[0011] As a supplementary design or alternative structure of the above-mentioned elastic locking structure: the distance between the unlocking position and the locking position in the axial direction of the capped locking nail is D; the distance between the unlocking position and the balance position in the axial direction of the capped locking nail is H; the value of H is greater than the value of D. Thus, in the process of moving the elastic locking piece from the balance position to the locking position, a certain amount of elastic potential energy can be released, and at the same time, the direction of the elastic force of the elastic locking piece is opposite to the direction of the slope between the locking position and the balance position, thereby avoiding the automatic unlocking of the elastic locking piece under the action of its own elastic force when it is in the locking position, and ensuring the stability of the locked structure.

[0012] As a supplementary design or alternative structure of the above-mentioned elastic locking structure: when the elastic locking piece is in the arc groove section, the rod body of the elastic locking piece cooperates with the inclined surface of the groove wall of the locking groove. The inclined surface formed by the groove wall of the arc groove section is arc-shaped, and in addition, the inclined surface formed by the groove wall of the arc groove section can also be linear. In the rotation process of the capped locking nail, the force exerted by the groove wall of the locking groove on the rod body of the elastic locking piece is inclined to the axial direction and the rotation direction of the capped locking nail. The force borne by the elastic locking piece will be decomposed into a component force in the axial direction of the capped locking nail, which can drive the elastic locking piece to bend and accumulate elastic potential energy.

[0013] As a supplementary design or alternative structure of the above-mentioned elastic locking structure: when the elastic locking piece is located between the unlocking position and the balance position; with the forward rotation of the capped locking nail, the deformation amount of the elastic locking piece increases; on the contrary, with the reverse rotation of the capped locking nail, the deformation amount of the elastic locking piece decreases.

[0014] As a supplementary design or alternative structure of the above-mentioned elastic locking structure: when the elastic locking piece is located between the unlocking position and the balance position; with the forward rotation of the capped locking nail, the deformation amount of the elastic locking piece decreases; on the contrary, with the reverse rotation of the capped locking nail, the deformation amount of the elastic locking piece increases.

[0015] As a supplementary design or alternative structure of the above-mentioned elastic locking structure: the mounting position is in the form of a hole or a groove.

[0016] As a supplementary design or alternative structure of the elastic locking structure: when the installation site is a groove-shaped structure parallel to the axial direction of the cap-equipped lock pin, a first bending section is arranged at both ends of the elastic locking piece, and a second bending section is arranged at the end of each first bending section; a positioning hole is further arranged on the abutting locking seat, and the second bending section can be inserted into the positioning hole.

[0017] As a supplementary design or alternative structure of the elastic locking structure: when the installation site is a hole-shaped structure or a groove-shaped structure perpendicular to the axial direction of the cap-equipped lock pin, a sharp head and a convex cap are arranged at both ends of the elastic locking piece respectively; after the elastic locking piece is installed, the sharp head is deformed into a curved or knocking bulging structure to limit the axial movement of the rod body.

[0018] As a supplementary design or alternative structure of the elastic locking structure: the abutting locking seat is a U-shaped metal piece or two parallel seat pieces.

[0019] As a supplementary design or alternative structure of the elastic locking structure: the locking piece that abuts against the pin cap is a first locking piece; the locking piece that abuts against the abutting locking seat is a second locking piece; the second locking piece and the first locking piece are both provided with holes for the cap-equipped lock pin to pass through.

[0020] The beneficial effects of the present application are:

[0021] 1. The present scheme can utilize the rotation of the arc groove section to drive the deformation of the elastic locking piece, and make the elastic locking piece accumulate elastic potential energy, and when the elastic locking piece is in the locking position, it can ensure that the elastic locking piece is tensioned to the cap-equipped lock pin, so as to utilize the cooperation of the abutting locking seat and the pin cap to clamp the first locking piece and the second locking piece, and when there are more locking pieces between the first locking piece and the second locking piece, the cap-equipped lock pin can also pass through and be tensioned.

[0022] 2. In the present scheme, the rotation amount of the cap-equipped lock pin relative to the elastic locking piece is less than 180°, which can make the elastic locking piece be clamped into the locking groove, or make the elastic locking piece be detached from the locking groove, so as to make the disassembly of the first locking piece and the second locking piece more convenient; and since the cap-equipped lock pin that tensions the first locking piece and the second locking piece is tensioned by the elastic locking piece, the elastic locking piece still has a certain elasticity when it is placed in the locking position, so the first locking piece and the second locking piece are always in an elastic connection state, which can meet the connection requirements of the corresponding elastic connection working condition. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present scheme or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below.

[0024] Figure 1is the explosion structure diagram of the elastic locking structure in the scheme;

[0025] Figure 2 is the structure schematic diagram of the cap locking nail in the scheme;

[0026] Figure 3 is Figure 1 is the use state diagram of one of the elastic locking structures in the scheme;

[0027] Figure 4 is the use state diagram of another elastic locking structure.

[0028] In the figure: 1-cap locking nail; 11-tubular section; 12-locking groove; 121-vertical groove section; 122-arc groove section; 123-balance position; 124-locking position; 125-unlocking position; 13-nail cap; 2-pressing lock seat; 21-mounting site; 22-positioning hole; 3-elastic locking piece; 31-first bending section; 32-second bending section; 4-first locking workpiece; 5-second locking workpiece; 6-circular gasket; 7-elastic retaining ring. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments will be described clearly and completely below with reference to the drawings, and the described embodiments are only a part of the embodiments, and not all of the embodiments. All other embodiments obtained by those skilled in the art without creative labor on the basis of the embodiments in the scheme belong to the protection scope of the scheme.

[0030] Embodiment 1

[0031] As shown in Figures 1 to 3 , the embodiment designs an elastic locking structure, which includes a cap locking nail 1, a pressing lock seat 2, and an elastic locking piece 3, and the like.

[0032] The elastic locking structure in the embodiment is mainly a connection structure of locking workpieces in the working conditions of elastic connection and detachable connection. The locking workpieces can be two or more. When the locking workpieces are two, the two locking workpieces are a first locking workpiece 4 and a second locking workpiece 5. When the number of the locking workpieces is greater than two, the two locking workpieces located at the outermost sides are the first locking workpiece 4 and the second locking workpiece 5. The second locking workpiece 5 and the first locking workpiece 4 are both provided with holes for the cap locking nail 1 to pass through. The first locking workpiece 4 in the embodiment can be a motor frame, and the second locking workpiece 5 can be a slide cover plate.

[0033] The one end of the cap-locked nail 1 is coaxially provided with a tubular section 11, which can be a separate component welded to the cap-locked nail 1 or a part of the cap-locked nail 1. The other end of the cap-locked nail 1 is provided with a nail cap 13, which can be provided with a notch in the shape of a straight line or a cross for use with a screwdriver.

[0034] A J-shaped locking groove 12 is arranged on the side wall of the tubular section 11 on each side thereof. The locking groove 12 comprises a vertical groove section 121 and an arc groove section 122, which are in communication with each other. An unlocking position 125 is formed at the intersection of the arc groove section 122 and the vertical groove section 121, and a locking position 124 is formed at the end of the arc groove section 122 away from the vertical groove section 121. A balance position 123 is formed in the arc groove section 122 between the unlocking position 125 and the locking position 124. The distance between the balance position 123 and the nail cap 13 is less than the distance between the unlocking position 125 and the nail cap 13. The distance between the unlocking position 125 and the locking position 124 in the axial direction of the cap-locked nail 1 is D, and the distance between the unlocking position 125 and the balance position 123 in the axial direction of the cap-locked nail 1 is H. The value of H is greater than the value of D. Thus, when the elastic locking member 3 moves from the balance position 123 to the locking position 124, a certain amount of elastic potential energy is released, and the angle between the elastic force of the elastic locking member 3 and the slope between the locking position 124 and the balance position 123 is greater than 90°, so that the elastic locking member 3 does not automatically unlock due to its own elastic force when it is placed in the locking position 124, thereby ensuring the stability of the locked structure.

[0035] The elastic locking member 3 has a rod-shaped rod body, and a first bending section 31 is arranged at each end of the elastic locking member 3. A second bending section 32 is arranged at the end of each first bending section 31, and the second bending section 32 is parallel to the rod body of the elastic locking member 3. The angle between the first bending section 31 and the rod body of the elastic locking member 3 is less than 90°. The rod body of the elastic locking member 3 can extend into the locking groove 12. The elastic locking member 3 can be bent and deformed to generate elastic potential energy. With the forward rotation of the cap-locked nail 1, the elastic locking member 3 can move from the unlocking position 125 to the locking position 124 through the balance position 123. With the reverse rotation of the cap-locked nail 1, the elastic locking member 3 can move from the locking position 124 to the unlocking position 125 through the balance position 123.

[0036] The pressing lock seat 2 is a U-shaped metal piece, which is welded to the lower side of the second locking workpiece in use. Each of the two side walls of the pressing lock seat 2 is provided with a mounting part 21 in the form of a groove parallel to the axial direction of the cap bolt 1. The pressing lock seat 2 is further provided with a positioning hole 22 into which the second bending section 32 is inserted. The two mounting parts 21 are used to mount and fix the two ends of the elastic lock piece 3, and a space for the cap bolt 1 to pass through and rotate is formed between the two mounting parts 21. The distance between the two mounting parts 21 should be less than the length of the elastic lock piece 3, and the two ends of the elastic lock piece 3 extend from the mounting parts 21 by a certain length, so as to ensure the deformation allowance of the elastic lock piece 3 in the deformation process, and the two ends of the elastic lock piece 3 will not come out of the mounting parts 21 after the elastic lock piece 3 is deformed.

[0037] The elastic retainer 7 is further sleeved on the cap bolt 1 and is arranged below the first locking workpiece 4 in use, so that the cap bolt 1 will not fall off when the first locking workpiece 4 is turned over after the second locking workpiece 5 is removed.

[0038] When two or more locking workpieces are connected, the cap bolt 1 passes through all the locking workpieces, and the nail cap 13 and the pressing lock seat 2 are respectively arranged on the two outermost locking workpieces.

[0039] When the elastic lock piece 3 is in the arc groove section 122, the rod body of the elastic lock piece 3 is matched with the inclined surface of the groove wall of the lock groove 12. The inclined surface formed by the groove wall of the arc groove section 122 is in the form of an arc, or in the form of an inclined line. During the rotation of the cap bolt 1, the force applied by the groove wall of the lock groove 12 to the rod body of the elastic lock piece 3 is inclined to the axial direction and the rotation direction of the cap bolt 1. The force borne by the elastic lock piece 3 will be decomposed into a component force in the axial direction of the cap bolt 1, which can push the elastic lock piece 3 to bend and accumulate elastic potential energy.

[0040] Specifically, when the elastic locking piece 3 is between the unlocking position 125 and the balance position 123, with the forward rotation of the cap-equipped locking pin 1, the deformation amount of the elastic locking piece 3 increases, and in this process, the force exerted by the cap-equipped locking pin 1 on the elastic locking piece 3 will be decomposed into a component force in the axial direction of the cap-equipped locking pin 1, which can drive the elastic locking piece 3 to bend and accumulate elastic potential energy; conversely, with the reverse rotation of the cap-equipped locking pin 1, the deformation amount of the elastic locking piece 3 decreases. When the elastic locking piece 3 is between the locking position 124 and the balance position 123, with the forward rotation of the cap-equipped locking pin 1, the deformation amount of the elastic locking piece 3 decreases, and in this process, the force exerted by the cap-equipped locking pin 1 on the elastic locking piece 3 will be decomposed into a component force in the axial direction of the cap-equipped locking pin 1, which can drive the elastic locking piece 3 to bend and accumulate elastic potential energy; conversely, with the reverse rotation of the cap-equipped locking pin 1, the deformation amount of the elastic locking piece 3 decreases. The elastic locking piece 3 can be judged to be in the area of the arc groove section 122 by the size and direction of the rotation resistance during rotation, so as to judge whether the elastic locking structure is locked in place.

[0041] The above structure, when in use, since the arc groove section 122 is distributed along the circumference of the cap-equipped locking pin 1, in the rotation process of the cap-equipped locking pin 1, the arc groove section 122 can be used to drive the elastic locking piece 3 to deform and accumulate elastic potential energy, and when the elastic locking piece 3 is at the locking position 124, the elastic locking piece 3 can ensure the tension of the cap-equipped locking pin 1, so as to clamp the first locking position workpiece 4 and the second locking position workpiece 5 by the cooperation of the abutting locking seat 2 and the top cap, and when there are more locking position workpieces between the first locking position workpiece 4 and the second locking position workpiece 5, the cap-equipped locking pin 1 can also be inserted and tensioned.

[0042] Embodiment 2

[0043] As shown in Figure 2 and Figure 4 , another elastic locking structure is designed to connect the first locking position workpiece 4 and the second locking position workpiece 5, and the elastic locking structure of the embodiment includes a cap-equipped locking pin 1, an abutting locking seat 2, and an elastic locking piece 3.

[0044] The one end of the capped lock pin 1 is coaxially provided with a tubular segment 11, and a J-shaped lock slot 12 is arranged on the side wall of the opposite sides of the tubular segment 11 respectively; the lock slot 12 comprises a vertical slot segment 121 and an arc slot segment 122 which are communicated with each other, an unlocking position 125 is formed at the intersection of the arc slot segment 122 and the vertical slot segment 121, and a locking position 124 is formed at the end of the arc slot segment 122 away from the vertical slot segment 121; a balance position 123 is formed in the arc slot segment 122 between the unlocking position 125 and the locking position 124; the distance between the balance position 123 and the pin cap 13 is less than the distance between the unlocking position 125 and the pin cap 13; the distance between the unlocking position 125 and the locking position 124 in the axial direction of the capped lock pin 1 is D; the distance between the unlocking position 125 and the balance position 123 in the axial direction of the capped lock pin 1 is H; the value of H is greater than the value of D.

[0045] The elastic lock piece 3 has a rod-shaped rod body, and a sharp head and a convex cap are arranged at the two ends of the elastic lock piece 3 respectively; after installation, the sharp head is deformed into a curved or knocking bulging structure to limit the axial movement of the rod body. The rod body of the elastic lock piece 3 can extend into the lock slot 12; the elastic lock piece 3 can be bent and deformed to generate elastic potential energy; with the forward rotation of the capped lock pin 1, the elastic lock piece 3 can move from the unlocking position 125 to the locking position 124 through the balance position 123; with the reverse rotation of the capped lock pin 1, the elastic lock piece 3 can move from the locking position 124 to the unlocking position 125 through the balance position 123.

[0046] The abutting lock seat 2 is two parallel seat pieces, the seat piece can adopt an angle steel, and the two angle steels can be welded to the lower side of the second lock position workpiece 5 in use, and one mounting position 21 is arranged on each of the two angle steels, the mounting position 21 is a hole structure or a groove structure perpendicular to the axial direction of the capped lock pin 1, and a space for the capped lock pin 1 to penetrate and rotate is formed between the two mounting positions 21.

[0047] When the elastic lock piece 3 is in the arc slot segment 122, the rod body of the elastic lock piece 3 cooperates with the inclined surface of the slot wall of the lock slot 12. When the elastic lock piece 3 is located between the unlocking position 125 and the balance position 123, with the forward rotation of the capped lock pin 1, the deformation amount of the elastic lock piece 3 increases, and vice versa, with the reverse rotation of the capped lock pin 1, the deformation amount of the elastic lock piece 3 decreases. When the elastic lock piece 3 is located between the locking position 124 and the balance position 123; with the forward rotation of the capped lock pin 1, the deformation amount of the elastic lock piece 3 decreases; on the contrary, with the reverse rotation of the capped lock pin 1, the deformation amount of the elastic lock piece 3 increases.

[0048] When the first lock position workpiece 4 and the second lock position workpiece 5 are connected, the capped lock pin 1 penetrates through all the lock position workpieces, and the pin cap 13 and the abutting lock seat 2 abut on the first lock position workpiece 4 and the second lock position workpiece 5 respectively.

[0049] The above embodiments are merely examples for the purpose of clear illustration, and are not intended to limit the embodiments; all the embodiments are not required to be enumerated here. The obvious changes or variations derived therefrom are still within the protection scope of the present technology.

Claims

1. An elastic locking structure, characterized by: It comprises a cap-equipped locking nail (1), a pressing locking seat (2) and an elastic locking piece (3). One end of the cap-equipped locking nail (1) is coaxially provided with a tubular section (11), and the other end of the cap-equipped locking nail (1) is provided with a nail cap (13). A J-shaped locking groove (12) is arranged on the side wall of the tubular section (11). The locking groove (12) comprises a vertical groove section (121) and an arc groove section (122) which are in communication with each other. An unlocking position (125) is formed at the intersection of the arc groove section (122) and the vertical groove section (121), and a locking position (124) is formed at the end of the arc groove section (122) away from the vertical groove section (121). A balance position (123) is formed in the arc groove section (122) between the unlocking position (125) and the locking position (124). The distance between the balance position (123) and the nail cap (13) is less than the distance between the unlocking position (125) and the nail cap (13). The elastic locking piece (3) has a rod-shaped rod body which can be inserted into the locking groove (12). The elastic locking piece (3) can be bent and deformed to generate elastic potential energy. With the forward rotation of the cap-equipped locking nail (1), the elastic locking piece (3) can move from the unlocking position (125) to the locking position (124) through the balance position (123). With the reverse rotation of the cap-equipped locking nail (1), the elastic locking piece (3) can move from the locking position (124) to the unlocking position (125) through the balance position (123). The pressing locking seat (2) has two mounting positions (21) for mounting and fixing the two ends of the elastic locking piece (3), and a space for the cap-equipped locking nail (1) to pass through and rotate is formed between the two mounting positions (21). When connecting two or more locking pieces, the cap-equipped locking nail (1) passes through all the locking pieces, and the nail cap (13) and the pressing locking seat (2) are respectively located on the outermost two locking pieces. The mounting position (21) is a groove-shaped structure parallel to the axial direction of the cap-equipped locking nail (1). First bending sections (31) are arranged at the two ends of the elastic locking piece (3), and second bending sections (32) are arranged at the ends of each first bending section (31). Positioning holes (22) are also arranged on the pressing locking seat (2), and the second bending sections (32) can be inserted into the positioning holes (22). The included angle between the first bending section (31) and the rod body of the elastic locking piece (3) is less than 90°. The directions of the two first bending sections (31) are different.

2. The elastic locking structure according to claim 1, characterized in that: The distance between the unlocking position (125) and the locking position (124) in the axial direction of the cap-equipped locking nail (1) is D, and the distance between the unlocking position (125) and the balance position (123) in the axial direction of the cap-equipped locking nail (1) is H. The value of H is greater than the value of D.

3. The elastic lock structure of claim 1, wherein: When the elastic locking piece (3) is in the arc groove section (122), the rod body of the elastic locking piece (3) cooperates with the inclined surface of the groove wall of the locking groove (12).

4. The elastic locking structure according to claim 3, wherein: When the elastic lock piece (3) is between the unlocking position (125) and the balance position (123), with the forward rotation of the cap-equipped lock pin (1), the deformation amount of the elastic lock piece (3) increases; on the contrary, with the reverse rotation of the cap-equipped lock pin (1), the deformation amount of the elastic lock piece (3) decreases.

5. The elastic lock structure of claim 3, wherein: When the elastic lock piece (3) is between the locking position (124) and the balance position (123), with the forward rotation of the cap-equipped lock pin (1), the deformation amount of the elastic lock piece (3) decreases; on the contrary, with the reverse rotation of the cap-equipped lock pin (1), the deformation amount of the elastic lock piece (3) increases.

6. The elastic lock structure of claim 1, wherein: The abutting lock seat (2) is a U-shaped metal piece or two parallel seat pieces.

7. The elastic lock structure of claim 1, wherein: The lock position workpiece abutting the pin cap (13) is a first lock position workpiece (4); the lock position workpiece abutting the abutting lock seat (2) is a second lock position workpiece (5); the second lock position workpiece (5) and the first lock position workpiece (4) are both provided with holes for the cap-equipped lock pin (1) to pass through.

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