Ball head locking device

Abstract

The utility model relates to the technical field of ball head locking, and in particular to a ball head locking device. The ball head locking device comprises an insertion tube, the bottom of which is provided with a plurality of annularly distributed spherical holes, and the insertion tube inside the spherical holes is provided with sink grooves; a steel ball is installed in the spherical hole, an annular disk is fixedly embedded on the steel ball, and a spring is fixedly installed on the outer ring wall of the annular disk; a threaded rod with a threaded connection is inserted in the insertion tube, and an abutting ball is arranged at the bottom of the threaded rod. The ball head locking device provided by the utility model is simple and convenient to operate as a whole, and the spring arranged on the steel ball can effectively improve the stability of the steel ball, and because the steel ball is restricted by the annular disk, it will not slip out of the spherical hole.

Description

Technical Field

[0001] The utility model relates to the technical field of ball head locking, in particular to a ball head locking device. Background Art

[0002] Ball head locking mainly relies on the special structure of the ball head bolt. The bottom of the ball head bolt is spherical, which can play an important role in places where deflection angles are required. It is connected to other components through a spherical connection part, so that it can withstand external forces and can rotate freely during the connection process, thereby meeting the requirements of mechanical assembly and movement. Ball head locking is widely used in industrial machinery, automobiles, aerospace and construction. For example, in the automotive field, ball head locking is widely used in suspension systems, steering systems and gearboxes to improve the driving quality and safety of automobiles; in the aerospace field, ball head locking is used in important components such as aircraft inflatable doors, engine brackets and landing gears; in the construction field, ball head locking is used in large bracket systems and structural connections; in the current ball head locking structure, the steel ball used for locking and limiting has no limiting structure, which leads to the hidden danger of instability of the steel ball, making it difficult to slide back into the installation cylinder after being stuck outside.

[0003] Therefore, it is necessary to provide a new ball head locking device to solve the above technical problems. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a ball head locking device.

[0005] The ball head locking device provided by the utility model comprises an inserting tube, a plurality of annularly distributed spherical holes are provided at the bottom of the inserting tube, and a sink groove is provided on the inserting tube inside each of the spherical holes;

[0006] A steel ball is installed in the spherical hole, an annular disk is fixedly embedded on the steel ball, and a spring is fixedly installed on the outer ring wall of the annular disk, and the other end of the spring is fixedly connected to the inner wall of the sink;

[0007] A threaded rod connected with a thread is inserted in the insertion tube, and an abutment ball is arranged at the bottom of the threaded rod.

[0008] Preferably, a threaded hole is provided on the inner cylinder wall of the upper half of the insertion cylinder, and the threaded rod is inserted into the threaded hole provided in the insertion cylinder and is threadedly connected to the threaded hole.

[0009] Preferably, a knob is fixedly mounted on the top of the threaded rod, and a coaxially arranged middle link rod is fixedly mounted on the bottom of the threaded rod.

[0010] Preferably, the abutment ball is fixedly embedded on the middle link and is coaxially arranged with the middle link.

[0011] Preferably, an abutment rod coaxially arranged with the middle link rod is fixedly mounted on the bottom of the abutment ball, and an inner top seat is fixedly mounted on the inner bottom wall of the insertion tube.

[0012] Preferably, a pressing disk is fixedly sleeved at the top tube opening of the insertion tube.

[0013] Preferably, the radius of the abutting ball is 1.5-2 times that of the steel ball.

[0014] Compared with the related art, the ball head locking device provided by the utility model has the following beneficial effects:

[0015] The utility model screws the threaded rod downward so that the middle link rod pushes the abutment ball to slide down, so that the abutment ball abuts against the steel ball sphere located in the insertion tube. As the abutment ball continues to slide down, the diameter of the contact spherical surface gradually increases. Therefore, the steel ball compresses the spring through the annular disk and slides outward from the spherical hole. Therefore, the steel ball that slides out of the insertion tube can effectively limit and lock the object. Because the steel ball is restricted by the annular disk, it will not slip out of the spherical hole. When the reverse knob makes the threaded rod screwed upward along the insertion tube, the middle link rod pulls up the abutment ball. As the abutment ball continues to slide up, the diameter of the contact spherical surface gradually decreases. At this time, the annular disk on the steel ball drives the steel ball to gradually slide back into the insertion tube under the elastic force of the compression spring. Therefore, the steel ball can release the limit and lock of the object. The overall operation of the device is simple and convenient, and the spring arranged on the steel ball can effectively improve the stability of the steel ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural schematic diagram of a preferred embodiment of the ball head locking device provided by the utility model;

[0017] Figure 2 for Figure 1 The schematic structural diagram of the insertion tube cross-section shown;

[0018] Figure 3 for Figure 2 A schematic cross-sectional view of the insertion tube shown;

[0019] Figure 4 for Figure 2 The structural schematic diagram of the steel ball shown;

[0020] Figure 5 for Figure 2 Schematic diagram of the installation structure of the ball at the bottom of the threaded rod shown.

[0021] Numbers in the figure: 1, insertion tube; 1a, spherical hole; 1b, sink groove; 1c, threaded hole; 11, pressing disk; 12, inner top seat; 2, steel ball; 21, annular disk; 22, spring; 3, threaded rod; 31, center rod; 32, knob; 4, abutment ball; 41, abutment rod. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0024] See also Figures 1 to 5 The utility model provides a ball head locking device in an embodiment, and the ball head locking device includes: an insertion tube 1, a steel ball 2, a threaded rod 3 and an abutting ball 4.

[0025] In the embodiments of the present invention, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A pressing disk 11 is fixedly sleeved at the top of the insertion tube 1, and a plurality of annularly distributed spherical holes 1a are provided at the bottom of the insertion tube 1, and a sink 1b is provided on the insertion tube 1 inside each of the spherical holes 1a, and a steel ball 2 is installed in the spherical hole 1a, and an annular disk 21 is fixedly embedded on the steel ball 2, and a spring 22 is fixedly installed on the outer ring wall of the annular disk 21, and the other end of the spring 22 is fixedly connected to the inner wall of the sink 1b;

[0026] A threaded rod 3 with a threaded connection is inserted in the insertion tube 1, and a contact ball 4 is arranged at the bottom of the threaded rod 3, and the radius of the contact ball 4 is 1.5-2 times that of the steel ball 2. Specifically: a threaded hole 1c is opened on the inner tube wall of the upper half of the insertion tube 1, and the threaded rod 3 is inserted in the threaded hole 1c opened in the insertion tube 1 and is threadedly connected with the threaded hole 1c, and a knob 32 is fixedly installed on the top of the threaded rod 3, and a coaxially arranged middle link rod 31 is fixedly installed on the bottom of the threaded rod 3, and the contact ball 4 is fixedly embedded in the middle link rod 31 and is coaxially arranged with the middle link rod 31.

[0027] It should be noted that: by screwing the threaded rod 3 downward, the middle link rod 31 pushes the abutting ball 4 to slide down, so that the abutting ball 4 abuts against the steel ball 2 located in the insertion tube 1. As the abutting ball 4 continues to slide down, the diameter of the contact spherical surface gradually increases. Therefore, the steel ball 2 compresses the spring 22 through the annular disk 21 and slides out of the spherical hole 1a. The steel ball 2 that slides out of the insertion tube 1 can effectively limit and lock the object. Because the steel ball 2 is limited by the annular disk 21, it will not slip out of the spherical hole 1a.

[0028] When the reverse knob 32 is turned to rotate the threaded rod 3 upward along the insertion tube 1, the middle link rod 31 pulls up the contact ball 4, and as the contact ball 4 continues to slide upward, the diameter of the contact spherical surface gradually decreases. At this time, the annular disk 21 on the steel ball 2 drives the steel ball 2 to gradually slide back into the insertion tube 1 under the elastic force of the compression spring 22, so that the steel ball 2 can release the object limit and lock;

[0029] Among them, the bottom of the abutment ball 4 is fixedly installed with an abutment rod 41 coaxially arranged with the middle link rod 31, and the inner bottom wall of the insertion tube 1 is fixedly installed with an inner top seat 12, so that after the abutment ball 4 pushes the half sphere of the steel ball 2 out of the spherical hole 1a, the abutment rod 41 abuts against the inner top seat 12, so that the operator can know that the operation has been completed.

[0030] The working principle of the ball head locking device provided by the utility model is as follows:

[0031] The threaded rod 3 is screwed in downward so that the middle link rod 31 pushes the abutting ball 4 to slide down, so that the abutting ball 4 abuts against the steel ball 2 located in the insertion tube 1. As the abutting ball 4 continues to slide down, the diameter of the contacting spherical surface gradually increases. Therefore, the steel ball 2 compresses the spring 22 through the annular disk 21 and slides out of the spherical hole 1a. The steel ball 2 that slides out of the insertion tube 1 can effectively limit and lock the object. Because the steel ball 2 is limited by the annular disk 21, it will not slip out of the spherical hole 1a.

[0032] When the reversing knob 32 causes the threaded rod 3 to rotate upward along the insertion tube 1, the middle link rod 31 pulls up the engaging ball 4, and as the engaging ball 4 continues to slide upward, the diameter of the contact spherical surface gradually decreases. At this time, the annular disk 21 on the steel ball 2 drives the steel ball 2 to gradually slide back into the insertion tube 1 under the elastic force of the compression spring 22, so that the steel ball 2 can release the limit and lock on the object.

[0033] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A ball head locking device, characterized in that: It comprises an insertion tube (1), the bottom of the insertion tube (1) is provided with a plurality of annularly distributed spherical holes (1a), and a sink groove (1b) is provided on the insertion tube (1) inside each of the spherical holes (1a); A steel ball (2) is installed in the spherical hole (1a), an annular disk (21) is fixedly embedded on the steel ball (2), and a spring (22) is fixedly installed on the outer ring wall of the annular disk (21), and the other end of the spring (22) is fixedly connected to the inner wall of the sink (1b); A threaded rod (3) connected by a thread is inserted into the insertion tube (1), and an abutment ball (4) is arranged at the bottom of the threaded rod (3).

2. The ball head locking device according to claim 1, characterized in that: A threaded hole (1c) is provided on the inner wall of the upper half of the insertion tube (1), and the threaded rod (3) is inserted into the threaded hole (1c) provided in the insertion tube (1) and is threadedly connected to the threaded hole (1c).

3. The ball head locking device according to claim 1, characterized in that: A knob (32) is fixedly mounted on the top of the threaded rod (3), and a coaxially arranged middle link rod (31) is fixedly mounted on the bottom of the threaded rod (3).

4. The ball head locking device according to claim 3, characterized in that: The abutment ball (4) is fixedly embedded in the middle link rod (31) and is coaxially arranged with the middle link rod (31).

5. The ball head locking device according to claim 4, characterized in that: An abutment rod (41) coaxially arranged with the middle link rod (31) is fixedly mounted on the bottom of the abutment ball (4), and an inner top seat (12) is fixedly mounted on the inner bottom wall of the insertion tube (1).

6. The ball head locking device according to claim 1, characterized in that: A pressing disc (11) is fixedly sleeved on the top opening of the insertion tube (1).

7. The ball head locking device according to claim 1, characterized in that: The radius of the abutting ball (4) is 1.5-2 times that of the steel ball (2).

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