Locking device of positioning column

Abstract

The utility model relates to the technical field of spring plungers, in particular to a locking device of a positioning column. The locking device of the positioning column with the anti-theft structure is provided. A locking device of a positioning column comprises a column shell, an adjusting column, an anti-theft structure and the like, the adjusting column is arranged at one end of the column shell in a threaded and sleeved mode, an adjusting hole is formed in the middle of the adjusting column, the anti-theft structure is assembled in the adjusting hole, and the anti-theft structure can be used for abutting against and locking a cylindrical angle pin. The inclined surface part is arranged on the cylindrical inclined pin, so that the aim of conveniently and quickly assembling parts is fulfilled; by adjusting the depth of the part, stretching into the cylinder shell, of the adjusting column, the pressing force of the spring abutting against the cylindrical angle pin can be correspondingly adjusted; and the ejector rod abuts against the inner end of the cylindrical angle pin, so that the cylindrical angle pin can be locked and prevented from being stolen, the structure is simple, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of spring plungers, and specifically to a locking device for a positioning post. Background Technique

[0002] A spring plunger, also known as a ball head plunger or a positioning post, adjusts the pre-tightening force and realizes the positioning function by controlling the screwing depth. Its structure generally includes a column body, a spring, a housing, etc.

[0003] A utility model patent of a spring plunger is disclosed on the Chinese Patent Network, and the authorization announcement number is CN210687784U. The device includes a threaded sleeve, a pin column sleeved in the threaded sleeve, and a load spring. One end of the pin column is provided with a convex portion extending outside the threaded sleeve. A wear-resistant bushing sleeving the pin column is arranged in the threaded sleeve, and a nylon anti-loosening rubber ring is sleeved on the outer wall of the threaded sleeve. Although the device can play a buffering and wear-resistant role in the product through the wear-resistant bushing and the nylon anti-loosening rubber ring, the device does not have an anti-theft structure, and thus has certain limitations and is not suitable for use in some special scenarios.

[0004] Therefore, a locking device for a positioning post with an anti-theft structure is specifically proposed to solve the technical problems existing in the above-mentioned prior art. Content of the Utility Model

[0005] In order to overcome the existing positioning post structure without an anti-theft structure, which cannot be used in some specific occasions and has certain limitations, the technical problem to be solved is to provide a locking device for a positioning post with an anti-theft structure.

[0006] The technical solution is: A locking device for a positioning post includes a column body housing, a cylindrical oblique pin, and a spring. The cylindrical oblique pin is sleeved in the column body housing, and the spring is also sleeved in the column body housing. It further includes an adjusting column and an anti-theft structure. The adjusting column is threadedly sleeved at one end of the column body housing, and one end of the spring abuts against the cylindrical oblique pin, and the other end abuts against the adjusting column. An installation groove is provided at the outer end of the adjusting column, and an adjusting hole is opened in the middle of the adjusting column. The anti-theft structure is assembled in the adjusting hole, and the anti-theft structure can be used to abut and lock the cylindrical oblique pin. The anti-theft structure includes a top rod and a top pin. The top rod is threadedly inserted into the adjusting hole, and the inner end of the top rod can abut against the inner end face of the cylindrical oblique pin. An anti-theft groove is opened at the outer end of the top rod, and the top pin is arranged in the middle of the inner side of the anti-theft groove.

[0007] Further, the anti-theft groove is a spline groove.

[0008] Further, the spline groove is arranged in a regular polyhedron structure.

[0009] Furthermore, the regular polyhedron structure is composed of at least one triangular prism.

[0010] Furthermore, the ejector pin is located at the central position inside the anti-theft groove.

[0011] Furthermore, a convex portion is provided at one end of the ejector rod close to the cylindrical oblique pin.

[0012] Furthermore, the diameter of the convex portion is larger than the diameter of the adjustment hole.

[0013] Furthermore, a pin head limiting hole is provided at the inner end of the cylindrical oblique pin, and one end of the spring abuts against the inner end face of the pin head limiting hole.

[0014] Furthermore, one side of the outer wall of the columnar housing is provided with a flat portion, and the other side is provided with a conical portion.

[0015] Furthermore, an inclined surface portion is provided at the outer end of the cylindrical oblique pin.

[0016] The beneficial effects of the present utility model are as follows: by providing an inclined surface portion on the cylindrical oblique pin, it is beneficial to achieve the purpose of convenient assembly of components; by adjusting the depth of the adjustment column extending into the columnar housing, the pressing force of the spring against the cylindrical oblique pin can be adjusted accordingly; and by abutting the ejector rod against the inner end of the cylindrical oblique pin, the purpose of locking and anti-theft of the cylindrical oblique pin can be achieved, with a simple structure and convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structure schematic diagram of the present utility model.

[0018] Figure 2 is a three-dimensional structure schematic diagram of another perspective of the present utility model.

[0019] Figure 3 is a locking state diagram of the anti-theft structure of the present utility model.

[0020] Figure 4 is a release state diagram of the anti-theft structure of the present utility model.

[0021] Figure 5 is a structure separation diagram of the present utility model.

[0022] Figure 6 is a three-dimensional structure schematic diagram of the anti-theft structure of the present utility model.

[0023] In the above drawings: 1: columnar housing, 10: flat portion, 11: conical portion, 2: cylindrical oblique pin, 20: inclined surface portion, 21: pin head limiting hole, 3: spring, 4: adjustment column, 40: installation groove, 41: adjustment hole, 5: ejector rod, 50: anti-theft groove, 51: ejector pin, 52: convex portion. Detailed implementation mode

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0025] Embodiment: A locking device for a positioning post provided by the present invention is shown in Figures 1-6 As shown, it includes a column housing 1, a cylindrical inclined pin 2 sleeved in the column housing 1, a spring 3, an adjusting column 4 and an anti-theft structure. One end of the column housing 1 is threadedly sleeved with the adjusting column 4, and one end of the spring 3 abuts against the cylindrical inclined pin 2, and the other end abuts against the adjusting column 4. By rotating and adjusting the depth of the adjusting column 4 extending into the column housing 1, the pressing force of the spring 3 against the cylindrical inclined pin 2 can be correspondingly adjusted, which is beneficial to improving the applicable range. An installation groove 40 is provided at the outer end of the adjusting column 4, and an adjusting hole 41 is opened in the middle of the adjusting column 4. An anti-theft structure is arranged in the adjusting hole 41. The anti-theft structure includes a top rod 5 and a top pin 51. The top rod 5 is threadedly inserted into the adjusting hole 41, and the inner end of the top rod 5 can abut against the inner side surface of the cylindrical inclined pin 2, so as to further lock the cylindrical inclined pin 2 locked on the component, which is beneficial to achieving the anti-unlocking anti-theft purpose for the cylindrical inclined pin 2. A theft-proof groove 50 is opened at the outer end of the top rod 5, and a top pin 51 is arranged in the middle of the inner side of the theft-proof groove 50.

[0026] As shown in Figure 6 As shown, further, the anti-theft groove 50 is a spline groove, which achieves the anti-theft effect by being different from conventional tools.

[0027] As shown in Figure 6 As shown, further, the spline groove is arranged in a regular polyhedron structure, and the anti-theft purpose is further achieved through special structural features.

[0028] As shown in Figure 6 As shown, further, the regular polyhedron structure is composed of at least one triangular prism. Through the cooperation of triangular prism structures of different sizes, it is beneficial to further improve the anti-theft strength.

[0029] As shown in Figure 6 As shown, further, the top pin 51 is located at the central position inside the anti-theft groove 50, which can prevent the use of conventional tools to unlock the top rod 5 and is safer to use.

[0030] As shown in Figure 6As shown, further, a convex portion 52 is provided at one end of the ejector rod 5 close to the cylindrical cam pin 2, which can limit the movement stroke of the ejector rod 5.

[0031] See Figure 5 and Figure 6 As shown, further, the diameter of the convex portion 52 is larger than the diameter of the adjustment hole 41, which can limit the position of the ejector rod 5, so that the ejector rod 5 can be stably connected and avoid falling off and being lost.

[0032] See Figure 3 and Figure 4 As shown, further, a pin head limiting hole 21 is provided at the inner end of the cylindrical cam pin 2, and the spring 3 abuts against the inner end face of the pin head limiting hole 21, which can stably install the spring 3 and also increase the variation range of the elastic force of the spring 3.

[0033] See Figures 1-4 As shown, further, a flat portion 10 is provided on one side of the outer wall of the cylindrical housing 1, and a tapered portion 11 is provided on the other side, which is beneficial to the installation of the cylindrical housing 1 in a specified direction.

[0034] In addition, see Figure 1 、 Figure 3 and Figure 5 As shown, an inclined surface portion 20 is provided at the outer end of the cylindrical cam pin 2, which is beneficial to the quick snap-fit with components.

[0035] During use, when it is necessary to snap-lock two cooperating components, the device is assembled into the mounting hole of one of the components, and then slowly pressed in the direction of the inclined surface portion 20 of the cylindrical cam pin 2. When the outer end of the cylindrical cam pin 2 is subjected to a squeezing force, the cylindrical cam pin 2 retracts towards the inside of the cylindrical housing 1, and the spring 3 is compressed under the squeezing force. Then, when the mounting holes of the two components are aligned, under the tension of the spring 3, the cylindrical cam pin 2 thereon can pop out and then snap into the mounting hole of the other component, thus completing the locking of the two components; by inserting a special tool into the adjustment hole 41, the special tool is inserted into the anti-theft groove 50, and the ejector rod 5 is adjusted to abut against the inner end of the cylindrical cam pin 2, so as to further lock and limit the locked cylindrical cam pin 2, and through the corresponding anti-theft groove 50 structure, it can effectively prevent the locked cylindrical cam pin 2 from being unlocked by conventional means, and thus play an anti-theft role for the two components connected and locked to each other.

[0036] The above are only the specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily conceive of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the said claims.

Claims

1. A locking device for a positioning column, comprising: Column housing (1); A cylindrical oblique pin (2), wherein the cylindrical oblique pin (2) is sleeved in the cylindrical outer shell (1); A spring (3), wherein the spring (3) is also sleeved in the cylindrical housing (1); It is characterized in that Also included are: An adjusting column (4), wherein the adjusting column (4) is threadedly sleeved on one end of the column housing (1), and one end of the spring (3) abuts against the cylindrical oblique pin (2), and the other end abuts against the adjusting column (4), a mounting groove (40) is provided at the outer end of the adjusting column (4), and an adjusting hole (41) is opened in the middle of the adjusting column (4); and An anti-theft structure, the anti-theft structure being assembled in the adjustment hole (41), the anti-theft structure being capable of abutting and locking the cylindrical oblique pin (2), the anti-theft structure comprising a push rod (5) and a push pin (51); A push rod (5), the push rod (5) is threadedly inserted into the adjustment hole (41), and the inner end of the push rod (5) can abut against the inner end surface of the cylindrical oblique pin (2), and the outer end of the push rod (5) is provided with an anti-theft groove (50); A push pin (51), wherein the push pin (51) is arranged at the middle part of the inner side of the anti-theft groove (50).

2. A locking device for a positioning column according to claim 1, characterized in that: The anti-theft groove (50) is a spline groove.

3. A locking device for a positioning column according to claim 2, characterized in that: The spline groove is arranged in a regular polygonal structure.

4. A locking device for a positioning column according to claim 3, characterized in that: The regular polygonal structure is composed of at least one triangular prism.

5. The locking device of a positioning column according to claim 1, characterized in that: The ejector pin (51) is located at the center of the inner side of the anti-theft groove (50).

6. The locking device of a positioning column according to claim 1, characterized in that: A protrusion (52) is provided on one end of the push rod (5) close to the cylindrical oblique pin (2).

7. A locking device for a positioning column according to claim 6, characterized in that: The diameter of the protrusion (52) is greater than the diameter of the adjustment hole (41).

8. The locking device of a positioning column according to claim 1, characterized in that: A pin head limiting hole (21) is provided at the inner end of the cylindrical oblique pin (2), and one end of the spring (3) abuts against the inner end surface of the pin head limiting hole (21).

9. The locking device of a positioning column according to claim 1, characterized in that: The outer wall of the column housing (1) is provided with a flat surface portion (10) on one side and a conical surface portion (11) on the other side.

10. The locking device of a positioning column according to claim 1, characterized in that: The outer end of the cylindrical oblique pin (2) is provided with an inclined portion (20).

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