Multi-head universal support arm device capable of being singly locked and interlocked

Abstract

A multi-head universal supporting arm device capable of being locked singly and interlocked comprises an upper rotating seat and a lower rotating seat, a blind hole is formed in the lower rotating seat, a through hole is formed in the upper rotating seat, a lower pressing sleeve is installed in the blind hole of the lower rotating seat in an up-down sliding mode, a T-shaped hole with a large lower portion and a small upper portion is formed in the lower pressing sleeve, and an upper pressing sleeve is installed in the through hole in the upper rotating seat in an up-down sliding mode. A T-shaped hole is formed in the upper pressing sleeve, a center hole concentric with the T-shaped hole is formed in the upper pressing sleeve, the vertical edge of the T-shaped lead screw upwards penetrates through the T-shaped hole and the center hole, a cushion cover is arranged on the T-shaped lead screw on the upper pressing sleeve in a penetrating mode, and an internal thread handle is connected to the lead screw above the cushion cover in a screwed mode through threads; smooth concave grooves are formed in the peripheral surfaces of the upper pressing sleeve and the lower pressing sleeve; and the side surfaces of the upper rotating seat and the lower rotating seat are respectively connected with a set of same universal ball head support arm mechanism. The support arm device is more flexible in application scene.

Description

Technical Field

[0001] The utility model relates to a support arm, in particular to a multi-head universal support arm device, belonging to the field of mechanical technology. Background Art

[0002] Support arms are commonly used in occasions where multiple objects need to be fixed or supported, and are also widely used in medical occasions. Currently, support arms can be adjusted in angle and then locked, such as a small universal bracket disclosed in Chinese Patent CN206817088U g, a surgical universal locking bracket disclosed in CN112370192A, etc. In the case of multi-head support arms, currently, the support arms either need to lock the angles of each ball head and the support arm tube separately, or the ball head is also locked after locking the angle between the support arms, resulting in inflexible practical scenarios. To address this problem, a new universal support arm needs to be designed to meet the usage requirements. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a multi-head universal support arm device that can be singly locked and interlocked.

[0004] To achieve the purpose of the utility model, the following technical solution is adopted: A multi-head universal support arm device that can be singly locked and interlocked, including an upper rotating seat and a lower rotating seat. The lower rotating seat is provided with a blind hole, and the upper rotating seat is provided with a through hole. A lower pressing sleeve is slidably installed up and down in the blind hole of the lower rotating seat. The lower pressing sleeve is provided with a T-shaped hole that is larger at the bottom and smaller at the top. An upper pressing sleeve is slidably installed up and down in the through hole of the upper rotating seat. The upper pressing sleeve is provided with a central hole that is concentric with the T-shaped hole. The vertical side of the T-shaped screw rod faces upward and passes through the T-shaped hole and the central hole. A cushion sleeve is sleeved on the T-shaped screw rod on the upper pressing sleeve, and an internal thread handle is screwed onto the screw rod above the cushion sleeve; smooth concave grooves are processed on the outer circumferential surfaces of the upper pressing sleeve and the lower pressing sleeve;

[0005] On the sides of the upper rotating seat and the lower rotating seat, there is a set of identical universal ball head arm mechanisms respectively. The universal ball head arm mechanism on the lower rotating seat includes a connection hole opened on the side of the lower rotating seat. The connection hole communicates with a blind hole. The outer sleeve is fixedly connected in the connection hole. A tip is inserted into the outer sleeve. The inner end of the tip is located in a smooth concave groove. A limit sleeve is fixedly connected to the other end of the outer sleeve. The rear part of the connection sleeve with internal threads is inserted through the outer sleeve. The rear end of the limit sleeve and the hole of the connection sleeve have corresponding tapered parts. The spherical cavity seat with external threads at the rear is screwed onto the internal threads of the connection sleeve through the external threads. The rod part of the ball head fixedly connected with the rod part passes through the front opening of the spherical cavity seat. The ball head is located in the spherical cavity. The diameter of the ball head is larger than the front opening of the spherical cavity seat. A universal ball top seat is slidably installed in the spherical cavity seat behind the ball head. A spherical cavity is opened on the end face of the universal ball top seat close to the ball head. The spherical cavity is adapted to the shape of the rear part of the ball head. A groove is machined on the outer peripheral surface of the universal ball top seat. The side surface of the groove is an inclined surface. A set screw hole is machined on the side surface of the lower spherical cavity seat. A set screw is screwed into the set screw hole. The set screw corresponds to the groove in the radial direction. The front end of the tip is located behind the universal ball top seat.

[0006] Further, on the outer wall of the lower pressing sleeve and on the inner wall of the blind hole, corresponding axial arc-shaped grooves along the axial direction of the blind hole are opened. A guide rail key is inserted into the arc-shaped grooves. The guide rail key restricts the relative rotation between the lower sleeve and the blind hole.

[0007] Further, the large hole of the T-shaped hole is D-shaped, and the horizontal side of the T-shaped screw rod is also D-shaped. The T-shaped horizontal side is located in the large hole of the T-shaped hole. The D shape restricts the relative rotation between the T-shaped screw rod and the lower pressing sleeve.

[0008] The positive and beneficial technical effects of the present utility model are as follows: The ball head on the universal ball head arm mechanism of the present arm device can lock the orientation independently, or can lock the ball heads on the two sets of universal ball head arm mechanisms while locking the angles of the upper rotating seat and the lower rotating seat, and the application scenarios are more flexible. Description of the Drawings

[0009] Figure 1 is a schematic diagram of a partial cross-section of the present utility model.

[0010] Figure 2 is a schematic diagram at the lower rotating seat and the upper rotating seat.

[0011] Figure 3 is a schematic diagram at the ball head end.

[0012] Figure 4 is an overall schematic diagram of the present utility model.

[0013] Figure 5 is a schematic diagram of the interior after removing the lower rotating seat.

[0014] Figure 6It is a schematic diagram of a universal ball top seat.

[0015] Figure 7 It is a schematic diagram of an upper pressure sleeve.

[0016] Figure 8 It is an enlarged view of the smooth groove. Specific implementation mode

[0017] To more fully explain the implementation of the present invention, implementation examples of the present invention are provided. These implementation examples are only elaborations of the present invention and do not limit the scope of the present invention.

[0018] In combination with the attached drawings, the present invention is further explained in detail. The marks in the attached drawings are: 1: lower rotating seat; 2: upper rotating seat; 3: lower pressure sleeve; 4: upper pressure sleeve; 401: smooth concave groove; 4011: arc surface section, 4022: inclined surface section; 5: T-shaped screw rod; 6: internal thread handle; 7: cushion sleeve; 8: guide rail key; 9: smooth concave groove; 10: universal ball head support arm mechanism A; 11: universal ball head support arm mechanism B; 12: outer sleeve; 13: tip; 14: limit sleeve; 15: connecting sleeve; 16: conical part; 17: spherical cavity seat; 18: universal ball top seat; 19: set screw; 20: ball head; 21: rod part; 22: groove; 23: spherical cavity; 24: D-shaped.

[0019] As shown in the attached drawings, a multi-head universal support arm device that can be single-locked and interlocked includes an upper rotating seat 2 and a lower rotating seat 1. The lower rotating seat is provided with a blind hole, and the upper rotating seat is provided with a through hole. A lower pressure sleeve 3 is slidably installed up and down in the blind hole on the left and right of the lower rotating seat. Axial arc grooves corresponding to each other are provided on the outer wall of the lower pressure sleeve and the inner wall of the blind hole along the axial direction of the blind hole. A guide rail key 8 is inserted into the arc groove, and the guide rail key restricts the relative rotation between the lower sleeve and the blind hole.

[0020] The lower pressure sleeve is provided with a T-shaped hole that is larger at the bottom and smaller at the top. An upper pressure sleeve 4 is slidably installed up and down in the through hole on the upper rotating seat. The upper pressure sleeve is provided with a central hole concentric with the T-shaped hole. The vertical side of the T-shaped screw rod 5 faces upward and passes through the T-shaped hole and the central hole. The large hole of the T-shaped hole is D-shaped, and the horizontal side of the T-shaped screw rod is also D-shaped. 24 is D-shaped. The horizontal side of the T-shaped is located in the large hole of the T-shaped hole, and the D shape restricts the relative rotation between the T-shaped screw rod and the lower pressure sleeve.

[0021] A cushion sleeve 7 is sleeved on the T-shaped screw rod on the upper pressure sleeve. An internal thread handle 6 is screwed on the screw rod above the cushion sleeve; a smooth concave groove 9 is machined on the outer peripheral surfaces of both the upper pressure sleeve and the lower pressure sleeve. The smooth concave groove is as Figure 7 , Figure 8 shown. In this embodiment, the smooth concave groove is similar to a "water droplet" shape, including an arc surface section 4011 at one end, and an inclined surface section 4012 is connected after the arc surface section.

[0022] On the sides of the upper rotating base and the lower rotating base, there is a set of identical universal ball head support arm mechanisms A10 and universal ball head support arm mechanisms B10 respectively. The universal ball head support arm mechanism B on the lower rotating base includes a connection hole opened on the side of the lower rotating base. The connection hole communicates with a blind hole. The outer sleeve 12 is fixedly connected in the connection hole. A tip 13 is slidably inserted in the outer sleeve. The inner end of the tip is located in a smooth concave groove. The inner end of the tip is spherical. A limit sleeve 14 is fixedly connected to the other end of the outer sleeve. The rear part of the connecting sleeve 15 with internal threads is inserted through the outer sleeve. The rear end of the limit sleeve and the hole of the connecting sleeve have corresponding tapered parts 16. The spherical cavity seat 17 with external threads at the rear is screwed onto the internal threads of the connecting sleeve through the external threads. The rod part 21 of the ball head 29 fixedly connected with a rod part passes through the front opening of the spherical cavity seat. The ball head 20 is located in the spherical cavity. The diameter of the ball head is larger than the front opening of the spherical cavity seat. A universal ball top seat 18 is slidably installed in the spherical cavity seat behind the ball head. A spherical cavity 23 is opened on the end face of the universal ball top seat close to the ball head. The spherical cavity is adapted to the shape of the rear part of the ball head. A groove 2 is machined on the outer peripheral surface of the universal ball top seat. The side surface of the groove is an inclined surface. A set screw hole is machined on the side surface of the lower spherical cavity seat. A set screw 19 is screwed into the set screw hole. The set screw corresponds to the groove in the radial direction. The front end of the tip 13 is located behind the universal ball top seat 18.

[0023] The working process of the present utility model is as follows:

[0024] Single locking of the ball head; Rotate the set screw. When the set screw contacts the inclined surface of the groove on the universal ball top seat, it will drive the universal ball top seat to squeeze the universal ball towards the universal ball to achieve locking. In this state, the angle between the upper rotating base and the lower rotating base is not locked and can rotate relative to each other for convenient operation.

[0025] Interlocking of the ball head and the rotating base: When the set screw is in the loosened state and the inner wire handle is tightened, it will drive the upper pressing sleeve and the lower pressing sleeve to move towards the middle at the same time and the upper rotating base to approach the lower rotating base. When the squeezing force between the upper and lower rotating bases is sufficient, the two rotating bases will be locked, thereby locking the angle between the two sets of universal ball head support arm mechanisms. When the upper pressing sleeve and the lower pressing sleeve move towards the middle at the same time, the inclined surface on the smooth concave groove contacts the spherical end of the tip. Due to the action of the inclined surface, the tip will move towards the universal ball top seat. Through the intermediate medium of the tip, the universal ball top seat will move towards the universal ball to achieve the locking effect. In this way, the upper rotating base, the lower rotating base and the universal balls at both ends are interlocked.

[0026] After describing the embodiments of the present invention in detail, those skilled in the art can clearly understand that various changes and modifications can be made without departing from the scope and spirit of the above-mentioned patent application. Any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention all belong to the scope of the technical solution of the present invention, and the present invention is not limited to the embodiments described in the specification either.

Claims

1. A multi-head universal arm device capable of single locking and interlocking, comprising an upper rotating seat and a lower rotating seat, wherein the lower rotating seat is provided with a blind hole and the upper rotating seat is provided with a through hole, characterized in that: A lower pressing sleeve is installed in the blind hole of the lower rotation left and right, and the lower pressing sleeve is provided with a T-shaped hole which is larger at the bottom and smaller at the top. An upper pressing sleeve is installed in the through hole on the upper rotating seat, and the upper pressing sleeve is provided with a center hole which is concentric with the T-shaped hole. The vertical side of the T-shaped screw rod passes through the T-shaped hole and the center hole upward. A cushion sleeve is passed through the T-shaped screw rod on the upper pressing sleeve, and an internal thread handle is screwed on the screw rod above the cushion sleeve through a thread. Smooth concave grooves are processed on the outer circumferences of the upper and lower pressing sleeves. The upper rotating seat and the lower rotating seat are respectively connected with a set of identical universal ball head support arm mechanisms. The universal ball head support arm mechanism on the lower rotating seat includes a connecting hole opened on the side of the lower rotating seat, the connecting hole is communicated with the blind hole, the outer sleeve is fixedly connected to the connecting hole, a top tip is passed through the outer sleeve, the inner end of the top tip is located in a smooth concave groove, and a limited sleeve is fixedly connected to the other end of the outer sleeve. The rear part of the connecting sleeve with an internal thread is passed through the outer sleeve, and the rear end of the limiting sleeve and the hole of the connecting sleeve have an adapted tapered portion. The spherical cavity seat with an external thread at the rear is screwed to the connecting sleeve through the external thread. On the internal thread, the rod part of the ball head fixedly connected with the rod part passes through the front opening of the spherical cavity seat, the ball head is located in the spherical cavity, the diameter of the ball head is larger than the front opening of the spherical cavity seat, a universal ball top seat is slidably installed in the spherical cavity seat behind the ball head, a spherical hole is opened on the end face of the universal ball top seat close to the ball head, the spherical hole is adapted to the rear shape of the ball head, a groove is machined on the outer peripheral surface of the universal ball top seat, the side surface of the groove is an inclined surface, a top screw hole is machined on the side surface of the lower spherical cavity seat, a top screw is screwed in the top screw hole, the top screw corresponds to the groove in the radial direction, and the front end of the top is located behind the universal ball top seat.

2. A multi-head universal arm device capable of single locking and interlocking according to claim 1, characterized in that: Corresponding axial arc grooves along the axial direction of the blind hole are provided on the outer wall of the lower pressing sleeve and the inner wall of the blind hole. A guide rail key is passed through the arc groove to limit the relative rotation between the lower frame sleeve and the blind hole.

3. The multi-head universal support arm device capable of single locking and interlocking according to claim 1, characterized in that: The large hole of the T-shaped hole is D-shaped, the transverse side of the T-shaped screw rod is also D-shaped, the T-shaped transverse side is located in the large hole of the T-shaped hole, and the D-shape limits the relative rotation between the T-shaped screw rod and the lower pressure sleeve.

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