Spring locking pin

Abstract

The utility model discloses a spring locking pin which comprises a handle, a shaft sleeve, a mounting plate and a locking pin rod, the handle is connected with the shaft sleeve and the locking pin rod, a locking cavity is arranged in the shaft sleeve, the shaft sleeve is arranged on the mounting plate, an elastic piece is arranged in the locking cavity, and the shaft sleeve penetrates through the shaft sleeve to be connected with the shaft sleeve. The quick-pulling type locking and unlocking device has the function of switching locking or unlocking in a quick-pulling mode, the limiting pin on the locking pin rod is clamped in the limiting groove A or the limiting groove B of the shaft sleeve by pulling and rotating the handle by 90 degrees, quick-pulling type locking and unlocking are achieved, it is guaranteed that the plug pin cannot be accidentally loosened in the using process through the arrangement of the elastic piece, and the quick-pulling type locking and unlocking device is safer and more reliable. The quick connector is compact in structure and suitable for occasions needing quick connection and frequent assembly and disassembly.

Description

TECHNICAL FIELD

[0001] The utility model belongs to locking device technical field, especially, it relates to a spring locking pin. BACKGROUND

[0002] Spring bolt is a kind of connecting fastener for fixing, connecting, adjusting and quick position change, which utilizes the elastic deformation of spring to realize fixing or releasing, so that the bolt can stably connect two components.Spring bolt can be flexibly used in the scene requiring quick assembly and disassembly and frequent replacement of parts, and to some extent, it simplifies the connection operation and improves work efficiency.Therefore, spring bolt has been widely applied in the fields of industrial fastener, aerospace, automobile industry and mechanical manufacturing.

[0003] Spring bolt should provide safe and reliable locking function to prevent accidental loosening during work.The existing spring bolt lacks locking function or its locking function is designed in the form of button control, such as automatic rebound spring bolt, which is easy to trigger and cause the loosening of the bolt.Therefore, it is necessary to design a spring bolt with safe and reliable locking function to overcome the above problems.

[0004] The patent document with publication number CN116197817A discloses a grinding clamping device realizing micro deformation by radial taper locking, which is provided with a clamping shaft and a spring installed in a clamping shaft sleeve, a rotation prevention section inserted into a rotation prevention section installation hole, a spring installation section and a locking pin cooperation section installed in a locking pin cooperation section installation hole, a spring sleeve installed outside the spring installation section, a locking pin installed in a locking pin upper section installation hole, a locking pin cooperation hole and a locking pin lower section installation hole, the locking pin upper section is engaged with the locking pin upper section installation hole through internal and external threads, the taper of the locking pin middle section is equal to that of the locking pin cooperation hole, the left side surface of the locking pin middle section cooperates with the left side inner wall of the locking pin cooperation hole, the locking pin lower section is in clearance fit with the locking pin lower section installation hole, and the left side wall of a clamping jaw baffle abuts against the right end surface of the clamping shaft sleeve.The clamping shaft structure is complex, the processing cost is increased, and the structure for fixing on the use platform is lacked. UTILITY MODEL CONTENTS

[0005] To solve the above technical problems, the utility model provides a spring locking pin.

[0006] The utility model discloses the following technical scheme can be realized.

[0007] The utility model provides a spring locking pin, including handle, shaft sleeve, mounting plate and locking pin rod, handle is connected with shaft sleeve and locking pin rod, the locking cavity is set up in the shaft sleeve, the shaft sleeve is set on the mounting plate, the elastic member is set up in the locking cavity, the shaft sleeve passes through the shaft sleeve connection.

[0008] Preferably, the locking pin rod comprises a connecting rod, a limiting part and a locking part, the connecting rod is arranged through the elastic element, one end of the limiting part is connected with the connecting rod, and the other end of the limiting part is connected with the locking part.

[0009] Preferably, the connecting rod is provided with pin hole A and pin hole B, and the limiting pin is arranged on the pin hole A.

[0010] Preferably, the handle is provided with a fixed pin hole and a through hole A, the through hole A is arranged through the handle, and a pin is arranged on the fixed pin hole.

[0011] Preferably, one end of the handle is provided with a supporting lug, and the other end of the handle is provided with a handle.

[0012] Preferably, one end of the shaft sleeve is provided with limiting groove A and limiting groove B, the other end of the shaft sleeve is provided with a connecting part, and a screw hole A is arranged on the connecting part.

[0013] Preferably, the mounting plate is provided with a through hole B and a screw hole B, and the shaft sleeve is connected through the mounting plate by the through hole B.

[0014] Preferably, one side of the locking cavity is provided with a through hole C.

[0015] The utility model discloses the beneficial effect lies in:

[0016] The utility model has the function of quick pull type switching locking or unlocking, makes the limiting pin on the locking pin rod and is connected in the limiting groove A or limiting groove B of the shaft sleeve through pulling and 90 DEG rotation handle, realizes quick pull type locking and unlocking, and the setting of elastic element ensures that the bolt does not accidentally loosen in the use process, is safer and more reliable. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is the structure schematic diagram of the utility model;

[0018] Fig. 2 It is the sectional view of the utility model;

[0019] Fig. 3 It is the structure schematic diagram of the handle of the utility model;

[0020] Fig. 4 It is the structure schematic diagram of the shaft sleeve of the utility model;

[0021] Fig. 5 It is the structure schematic diagram of the locking state of the utility model;

[0022] Fig. 6 It is the structure schematic diagram of the unlocking state of the utility model;

[0023] In the figure: 1 - handle, 11 - lug, 12 - through hole A, 13 - handle, 2 - shaft sleeve, 21 - locking cavity, 22 - connecting part, 23 - screw hole A, 24 - through hole C, 3 - mounting plate, 31 - through hole B, 32 - screw hole B, 33 - waist type fixing hole, 4 - locking pin, 41 - connecting rod, 42 - limiting part, 43 - locking part, 5 - pin hole A, 51 - limiting pin, 6 - pin hole B, 7 - elastic piece, 8 - limiting groove A, 9 - limiting groove B, 10 - fixed pin hole, 101 - pin. DETAILED DESCRIPTION

[0024] The technical scheme of the utility model is further described below, but the scope of protection is not limited to the description.

[0025] Embodiment:

[0026] As Figs. 1 to 4 shown, a spring locking pin comprises a handle 1, a shaft sleeve 2, a mounting plate 3 and a locking pin 4, the handle 1 is connected with the shaft sleeve 2 and the locking pin 4, the shaft sleeve 2 is provided with a locking cavity 21, the shaft sleeve 2 is arranged on the mounting plate 3, the locking cavity 21 is provided with an elastic piece 7, the elastic piece 7 is a spring, and the shaft sleeve 2 is connected through the shaft sleeve 2.

[0027] The locking pin 4 comprises a connecting rod 41, a limiting part 42 and a locking part 43, the connecting rod 41 is arranged through the elastic piece 7, one end of the limiting part 42 is connected with the connecting rod 41, and the other end of the limiting part 42 is connected with the locking part 43. The limiting part 42 has a diameter greater than that of the through hole C 24, thereby playing a limiting role. The locking part 43 is used for extending into a corresponding hole of a required locking structure to realize locking.

[0028] The connecting rod 41 is provided with a pin hole A 5 and a pin hole B 6, the pin hole A 5 and the pin hole B 6 are arranged perpendicularly to each other, and the pin hole A 5 is provided with a limiting pin 51.

[0029] The handle 1 is provided with a fixed pin hole 10 and a through hole A 12, the through hole A 12 is arranged through the handle 1, the fixed pin hole 10 is provided with a pin 101, the connecting rod 41 can extend into the through hole A 12 and be connected in a sliding mode, and the pin 101 extends through the fixed pin hole 10 and the pin hole B 6, so that the locking pin 4 is connected and fastened with the handle 1.

[0030] One end of the handle 1 is provided with a lug 11, two lugs 11 are symmetrically arranged, can be used for limiting the limiting pin 51, and prevent the limiting pin 51 from being pulled out of the pin hole A 5, and the other end of the handle 1 is provided with a handle 13, thereby facilitating pulling the handle 1.

[0031] One end of the bushing 2 is provided with a limiting groove A8 and a limiting groove B9, which are perpendicular to each other. The depth of the limiting groove A8 is less than the depth of the limiting groove B9. The other end of the bushing 2 is provided with a connecting part 22, which is provided with four screw holes A23.

[0032] The mounting plate 3 has a through hole B31 and four screw holes B32. The bushing 2 is connected to the mounting plate 3 through the through hole B31, and the screw holes B32 are evenly distributed around the through hole B31. The bushing 2 is fastened to the mounting plate 3 by using bolts that pass through the screw holes B32 and screw holes A23.

[0033] The bottom of the mounting plate 3 can be provided with a waist-shaped fixing hole 33. The present invention can be fixed on the mounting platform by passing through the waist-shaped fixing hole 33 with a corresponding bolt. The mounting plate 3 can also be fixed on the platform by welding, bolts or other means as needed. The relative position of the present invention and the required locking structure can be flexibly adjusted to ensure the accuracy of the locking hole diameter matching.

[0034] A through hole C24 is provided on one side of the locking cavity 21, and the through hole C24 is connected to one side of the locking cavity 21. The locking pin 4 passes through the sleeve 2 through the locking cavity 21 and the through hole C24.

[0035] The method of using this utility model includes the following steps:

[0036] When in use, the end of the bushing 2 away from the handle 1 faces the desired locking structure, and then the utility model is installed in a suitable position through the mounting plate 3.

[0037] like Fig. 5 As shown: By pulling the handle 1 to the limit state away from the locking pin 4 and rotating the handle 13 by 90°, the limiting pin 51 on the locking pin 4 is engaged in the limiting groove B9. At this time, the end of the locking pin 4 away from the handle 1 extends out of the bushing 2, locking the required locking structure.

[0038] like Fig. 6 As shown: The elastic element 7 enables the limiting pin 51 to switch between the limiting groove A8 and the limiting groove B9, quickly realizing the conversion between the locking and unlocking states of the connecting parts. By pulling the handle 1 to the limit state away from the locking pin 4 and rotating the handle 13 90°, the limiting pin 51 on the locking pin 4 is engaged in the limiting groove A8. At this time, the end of the locking pin 4 away from the handle 1 is retracted into the bushing 2, unlocking the required locking structure.

Claims

1. A spring locking pin, characterized in that: It includes a handle (1), a bushing (2), a mounting plate (3), and a locking pin (4). The handle (1) is connected to the bushing (2) and the locking pin (4). A locking cavity (21) is provided inside the bushing (2). The bushing (2) is mounted on the mounting plate (3). An elastic element (7) is provided inside the locking cavity (21). The bushing (2) is connected through the bushing (2).

2. A spring locking pin as described in claim 1, characterized in that: The locking pin (4) includes a connecting rod (41), a limiting part (42) and a locking part (43). The connecting rod (41) is disposed through the elastic member (7). One end of the limiting part (42) is connected to the connecting rod (41), and the other end of the limiting part (42) is connected to the locking part (43).

3. A spring locking pin as described in claim 2, characterized in that: The connecting rod (41) is provided with pin hole A (5) and pin hole B (6), and a limiting pin (51) is provided on pin hole A (5).

4. A spring locking pin as described in claim 1, characterized in that: The handle (1) is provided with a fixing pin hole (10) and a through hole A (12). The through hole A (12) is provided through the handle (1), and a pin (101) is provided on the fixing pin hole (10).

5. A spring locking pin as described in claim 1, characterized in that: One end of the handle (1) is provided with a lug (11), and the other end of the handle (1) is provided with a handle (13).

6. A spring locking pin as described in claim 1, characterized in that: The bushing (2) has a limiting groove A (8) and a limiting groove B (9) at one end, and a connecting part (22) at the other end, with a screw hole A (23) on the connecting part (22).

7. A spring locking pin as described in claim 1, characterized in that: The mounting plate (3) is provided with a through hole B (31) and a screw hole B (32), and the bushing (2) is connected through the through hole B (31) through the mounting plate (3).

8. A spring locking pin as described in claim 1, characterized in that: A through hole C (24) is provided on one side of the locking cavity (21).

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