Bolt-sphere joint with adjustable length

Abstract

The utility model discloses a bolt-sphere joint with adjustable length, which relates to the technical field of bolt-sphere joints, and comprises a bolt sphere, an adjusting unit arranged in the bolt sphere, and an external unit arranged on the side surface of the bolt sphere, the external connection unit comprises a plurality of connection rods arranged on the side face of the bolt ball and external connection assemblies arranged in the connection rods. The adjusting unit comprises an inserting assembly fixedly connected to the bottom end of the connecting rod and an adjusting assembly arranged in the bolt ball. According to the bolt-sphere joint with the adjustable length, one end of an external threaded rod is plugged into the butt joint groove, the surface of the end of the threaded rod is attached to the arc-shaped plates, and the friction force between the arc-shaped plates and the surface of the end of the threaded rod is increased under the elastic force of the first elastic column and the first spring; the connection stability with an external threaded rod is improved, different arc-shaped grooves can be selected for clamping connection, and the multiple connecting rods can be adjusted to be different in length.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt ball joints, and particularly relates to a bolt ball joint with adjustable length. Background Art

[0002] A bolt ball joint is mainly composed of bolts, steel balls, pins (or screws), sleeves, and cone heads or sealing plates, etc. It is suitable for connecting steel pipe members to form a grid structure. The assembly of bolt ball joints does not require welding and is convenient for installation and disassembly. Therefore, it is widely used in the design and construction of steel grid structures.

[0003] After retrieval, the publication (announcement) number: CN219671616 discloses a bolt ball joint with adjustable length, belonging to the technical field of bolt ball joints, which solves the problem that the connection length of the adjusting rod of the existing bolt ball grid cannot be adjusted; it includes a bolt ball, and a plurality of annular grooves for accommodating adjusting sleeves are provided on the surface of the bolt ball. The adjusting sleeve adjusts the depth of entering the annular groove through a one-way limiting buckle assembly, and the one-way limiting buckle assembly is sleeved and in one-way clamping connection with the adjusting sleeve; a threaded hole for cooperating with the adjusting rod is provided at the center of the annular groove on the bolt ball, and the bolt at one end of the adjusting rod passes through the adjusting sleeve and is in threaded connection with the threaded hole; the one-way limiting buckle assembly and the adjusting sleeve cooperate to adjust the connection length between the bolt and the threaded hole. The utility model realizes the adjustment of the connection length between the bolt of the adjusting rod and the bolt ball by adjusting the depth of the adjusting sleeve entering the annular groove through the one-way clamping of the one-way limiting buckle assembly.

[0004] Although the above solution realizes the adjustment of the connection length between the bolt of the adjusting rod and the bolt ball, it is not stable enough when connecting with other external threaded rods, and it is not convenient enough during adjustment, and it is difficult for multiple connecting rods to adjust different lengths simultaneously. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide a bolt ball joint with adjustable length, which solves the problem of unstable connection with other external threaded rods by setting an external connection unit, and solves the problems of inconvenient adjustment and difficulty in simultaneously adjusting different lengths of multiple connecting rods by setting an adjustment unit.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A bolt ball joint with adjustable length includes a bolt ball, and further includes an adjustment unit arranged inside the bolt ball and an external connection unit arranged on the side of the bolt ball;

[0008] The external connection unit includes a plurality of connecting rods arranged on the side of the bolt ball and an external connection component arranged inside the connecting rod;

[0009] The adjusting unit includes a plugging component fixedly connected to the bottom end of the connecting rod, and an adjusting component arranged inside the bolt ball.

[0010] Preferably, the external component in the external unit includes a docking groove opened inside the connecting rod, a plurality of grooves communicated and arranged on both sides of the docking groove, a first elastic column fixedly connected inside the groove, a first spring arranged on the surface of the first elastic column, and an arc-shaped plate fixedly connected to one end of the first elastic column.

[0011] Preferably, the arc-shaped plates on both sides in the external unit are arranged on the same horizontal line.

[0012] Preferably, the plugging component in the adjusting unit includes an adjusting rod fixedly connected to the bottom end of the connecting rod, limiting blocks fixedly connected to both sides of the bottom end of the adjusting rod, through holes opened inside the limiting blocks, circular grooves communicated and arranged on the side surfaces of the through holes, and limiting grooves communicated and arranged on both sides of the circular grooves.

[0013] Preferably, the adjusting component in the adjusting unit includes a plurality of adjusting grooves opened inside the bolt ball, vertical grooves communicated and arranged on both sides of the adjusting grooves, and arc-shaped grooves communicated and arranged on the side surfaces of the vertical grooves.

[0014] Preferably, the adjusting component in the adjusting unit further includes a fixed block fixedly connected to one side inside the arc-shaped groove, a rectangular hole opened inside the fixed block, a partition plate fixedly connected inside the rectangular hole, second elastic columns fixedly connected to both sides of the partition plate, second springs arranged on the surfaces of the second elastic columns, a clamping column fixedly connected to one side of the second elastic column, and an arc-shaped column fixedly connected to one side of the fixed block.

[0015] Preferably, the clamping column in the adjusting unit is clamped with the corresponding limiting groove, and the arc-shaped column is correspondingly arranged with the through hole.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] First, in the utility model, through the setting of the external unit, one end of the external threaded rod is inserted into the docking groove, and the surface of this end of the threaded rod is attached to a plurality of arc-shaped plates. Under the elastic force of the first elastic column and the first spring, the friction force between the plurality of arc-shaped plates and the surface of this end of the threaded rod is increased, improving the connection stability with the external threaded rod.

[0018] Second, in the present utility model, through the setting of the adjustment unit, the adjustment rod is inserted into the corresponding adjustment groove, and at the same time, the limit block enters the corresponding vertical groove. When the distance between the connecting rod and the bolt ball is appropriate, rotate the adjustment rod so that the arc-shaped column passes through the through hole. At the same time, the fixing block is clamped with the circular groove. At the same time, under the action of the second elastic column and the second spring, the two clamping columns are driven to extend into the corresponding limit grooves, thereby effectively fixing the adjustment rod, and different arc-shaped grooves can be selected for clamping, and multiple connecting rods can adjust different lengths. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural diagram of the present utility model;

[0020] Figure 2 is a three-dimensional structural diagram of the connecting rod and the adjustment rod in the present utility model;

[0021] Figure 3 is a sectional view of the connecting rod in the present utility model;

[0022] Figure 4 is the present utility model Figure 3 magnified schematic diagram of the structure at A;

[0023] Figure 5 is a sectional view of the limit block in the present utility model;

[0024] Figure 6 is a sectional view of the bolt ball in the present utility model;

[0025] Figure 7 is another angle sectional view of the bolt ball in the present utility model;

[0026] Figure 8 is the present utility model Figure 7 magnified schematic diagram of the structure at B.

[0027] In the figure:

[0028] 1. Bolt ball;

[0029] 2. External connection unit; 201. Connecting rod; 202. Docking groove; 203. Groove; 204. First spring; 205. First elastic column; 206. Arc-shaped plate;

[0030] 3. Adjustment unit; 301. Adjustment rod; 302. Limit block; 303. Circular groove; 304. Through hole; 305. Limit groove; 306. Adjustment groove; 307. Vertical groove; 308. Arc-shaped groove; 309. Arc-shaped column; 310. Clamping column; 311. Second elastic column; 312. Second spring; 313. Partition plate. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0031] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0032] Embodiment 1

[0033] As Figures 1-8 shown, an adjustable-length bolt ball joint includes a bolt ball 1, and further includes an adjustment unit 3 disposed inside the bolt ball 1 and an external connection unit 2 disposed on the side of the bolt ball 1;

[0034] The external connection unit 2 includes a plurality of connecting rods 201 disposed on the side of the bolt ball 1 and an external connection component disposed inside the connecting rod 201;

[0035] The adjustment unit 3 includes a plugging component fixedly connected to the bottom end of the connecting rod 201 and an adjustment component disposed inside the bolt ball 1.

[0036] The external connection component in the external connection unit 2 includes a docking groove 202 opened inside the connecting rod 201, a plurality of grooves 203 communicated and arranged on both sides of the docking groove 202, a first elastic column 205 fixedly connected inside the groove 203, a first spring 204 disposed on the surface of the first elastic column 205, and an arc-shaped plate 206 fixedly connected to one end of the first elastic column 205.

[0037] The arc-shaped plates 206 on both sides in the external connection unit 2 are arranged on the same horizontal line.

[0038] The plugging component in the adjustment unit 3 includes an adjustment rod 301 fixedly connected to the bottom end of the connecting rod 201, limit blocks 302 fixedly connected to both sides of the bottom end of the adjustment rod 301, through holes 304 opened inside the limit blocks 302, circular grooves 303 communicated and arranged on the side of the through holes 304, and limit grooves 305 communicated and arranged on both sides of the circular grooves 303.

[0039] The adjustment component in the adjustment unit 3 includes a plurality of adjustment grooves 306 opened inside the bolt ball 1, vertical grooves 307 communicated and arranged on both sides of the adjustment grooves 306, and arc-shaped grooves 308 communicated and arranged on the side of the vertical grooves 307.

[0040] The adjustment component in the adjustment unit 3 further includes a fixed block fixedly connected to one side inside the arc-shaped groove 308, a rectangular hole opened inside the fixed block, a partition plate 313 fixedly connected inside the rectangular hole, second elastic columns 311 fixedly connected to both sides of the partition plate 313, second springs 312 disposed on the surface of the second elastic columns 311, a clamping column 310 fixedly connected to one side of the second elastic column 311, and an arc-shaped column 309 fixedly connected to one side of the fixed block.

[0041] The clamping column 310 in the adjustment unit 3 is clamped with the corresponding limiting groove 305 , and the arc column 309 is correspondingly arranged with the through hole 304 .

[0042] Insert one end of the external threaded rod into the docking groove 202, and the end surface of the threaded rod fits with multiple arc plates 206. Under the elastic force of the first elastic column 205 and the first spring 204, the friction between the multiple arc plates 206 and the end surface of the threaded rod is increased, thereby improving the connection stability with the external threaded rod.

[0043] Example 2

[0044] like Figures 1-8 As shown, a length-adjustable bolt ball node includes a bolt ball 1, an adjustment unit 3 disposed inside the bolt ball 1, and an external unit 2 disposed on the side of the bolt ball 1;

[0045] The external connection unit 2 includes a plurality of connection rods 201 disposed on the side of the bolt ball 1 and an external connection component disposed inside the connection rods 201;

[0046] The adjusting unit 3 includes a plug-in assembly fixedly connected to the bottom end of the connecting rod 201 , and an adjusting assembly arranged inside the bolt ball 1 .

[0047] The external components in the external unit 2 include a docking groove 202 opened inside the connecting rod 201, a plurality of grooves 203 connected and arranged on both sides of the docking groove 202, a first elastic column 205 fixedly connected to the inside of the groove 203, a first spring 204 arranged on the surface of the first elastic column 205, and an arc plate 206 fixedly connected to one end of the first elastic column 205.

[0048] The arc plates 206 on both sides of the external unit 2 are arranged on the same horizontal line.

[0049] The plug-in assembly in the adjustment unit 3 includes an adjustment rod 301 fixedly connected to the bottom end of the connecting rod 201, a limit block 302 fixedly connected to both sides of the bottom end of the adjustment rod 301, a through hole 304 opened inside the limit block 302, a circular groove 303 connected to the side of the through hole 304, and a limit groove 305 connected to both sides of the circular groove 303.

[0050] The adjustment assembly in the adjustment unit 3 includes a plurality of adjustment slots 306 opened inside the bolt ball 1 , vertical slots 307 communicating with each other at both sides of the adjustment slots 306 , and arc slots 308 communicating with each other at the sides of the vertical slots 307 .

[0051] The adjusting component in the adjusting unit 3 further includes a fixing block fixedly connected to one side inside the arc-shaped groove 308, a rectangular hole formed inside the fixing block, a partition plate 313 fixedly connected inside the rectangular hole, second elastic columns 311 fixedly connected to both sides of the partition plate 313, second springs 312 arranged on the surfaces of the second elastic columns 311, clamping columns 310 fixedly connected to one side of the second elastic columns 311, and an arc-shaped column 309 fixedly connected to one side of the fixing block.

[0052] The clamping column 310 in the adjusting unit 3 is clamped with the corresponding limiting groove 305, and the arc-shaped column 309 is correspondingly arranged with the through hole 304.

[0053] Insert the adjusting rod 301 into the corresponding adjusting groove 306. At the same time, the limiting block 302 enters the corresponding vertical groove 307. When the distance between the connecting rod 201 and the bolt ball 1 is appropriate, rotate the adjusting rod 301 so that the arc-shaped column 309 passes through the inside of the through hole 304. At the same time, the fixing block is clamped with the circular groove 303. At the same time, under the action of the second elastic columns 311 and the second springs 312, the two clamping columns 310 are driven to extend into the corresponding limiting grooves 305, thereby effectively fixing the adjusting rod 301. And different arc-shaped grooves 308 can be selected for clamping, and multiple connecting rods 201 can be adjusted to different lengths.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable-length bolt ball joint, comprising a bolt ball (1), characterized in that, It further includes an adjusting unit (3) arranged inside the bolt ball (1) and an external connection unit (2) arranged on the side of the bolt ball (1); The external connection unit (2) includes a plurality of connecting rods (201) arranged on the side of the bolt ball (1) and an external connection assembly arranged inside the connecting rod (201); The adjusting unit (3) includes a plugging assembly fixedly connected to the bottom end of the connecting rod (201) and an adjusting assembly arranged inside the bolt ball (1).

2. The adjustable-length bolt ball joint according to claim 1, wherein: The external connection assembly in the external connection unit (2) includes a docking groove (202) opened inside the connecting rod (201), a plurality of grooves (203) communicated and arranged on both sides of the docking groove (202), a first elastic column (205) fixedly connected inside the groove (203), a first spring (204) arranged on the surface of the first elastic column (205), and an arc-shaped plate (206) fixedly connected to one end of the first elastic column (205).

3. The adjustable-length bolt ball joint according to claim 2, wherein: The arc-shaped plates (206) on both sides in the external connection unit (2) are arranged on the same horizontal line.

4. The adjustable-length bolt sphere node according to claim 3, wherein: The plugging assembly in the adjusting unit (3) includes an adjusting rod (301) fixedly connected to the bottom end of the connecting rod (201), limiting blocks (302) fixedly connected to both sides of the bottom end of the adjusting rod (301), through holes (304) opened inside the limiting blocks (302), circular grooves (303) communicated and arranged on the side of the through holes (304), and limiting grooves (305) communicated and arranged on both sides of the circular grooves (303).

5. The adjustable-length bolt ball joint according to claim 4, wherein: The adjusting assembly in the adjusting unit (3) includes a plurality of adjusting grooves (306) opened inside the bolt ball (1), vertical grooves (307) communicated and arranged on both sides of the adjusting grooves (306), and arc-shaped grooves (308) communicated and arranged on the side of the vertical grooves (307).

6. The adjustable-length bolt ball joint according to claim 5, characterized in that: The adjusting assembly in the adjusting unit (3) further includes a fixing block fixedly connected to one side inside the arc-shaped groove (308), a rectangular hole opened inside the fixing block, a partition plate (313) fixedly connected inside the rectangular hole, second elastic columns (311) fixedly connected to both sides of the partition plate (313), second springs (312) arranged on the surface of the second elastic columns (311), a clamping column (310) fixedly connected to one side of the second elastic column (311), and an arc-shaped column (309) fixedly connected to one side of the fixing block.

7. The adjustable-length bolt ball joint according to claim 6, wherein: The clamping column (310) in the adjusting unit (3) is clamped with the corresponding limiting groove (305), and the arc-shaped column (309) is arranged corresponding to the through hole (304).

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