Ball joint locking device

Abstract

The utility model relates to the technical field of medical instruments, and provides a ball joint locking device which comprises a foot boot connecting piece, a ball joint seat and a locking structure. The foot boot connecting piece comprises a foot boot connecting seat and a ball joint; the ball joint seat comprises a ball joint through hole, the ball joint penetrates through the joint through hole, and the ball joint can rotate relative to the ball joint seat; the locking structure is located between the ball joint and the traction support and comprises a lead screw, a lead screw nut and an abutting assembly, one end of the lead screw is connected with the traction support, the other end of the lead screw is connected with the ball joint seat, and the abutting assembly is located between the lead screw nut and the ball joint and abuts against the lead screw nut; the lead screw nut is provided with a first position and a second position, when the lead screw nut is located at the first position, the abutting assembly is spaced from the ball joint, and when the lead screw nut is located at the second position, the abutting assembly abuts against the ball joint. According to the ball joint locking device provided by the embodiment of the invention, the ball joint is locked, and the position fixation between the foot boot and the traction frame is ensured.

Description

Technical Field

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

[0002] During the use of medical lower limb traction equipment, foot boots are installed on the traction bracket to facilitate the placement or fixation of the foot.

[0003] Currently, there are various ways to adjust and fix boots, which have the problems of long adjustment time, complicated and inconvenient steps; specifically, the joint locking structure used in the boots is unreliable and has poor load-bearing capacity, and the position of the boots is easily changed under load. Utility Model Content

[0004] In order to solve the above technical problem or at least partially solve the above technical problem, the utility model provides a ball joint locking device.

[0005] The present application provides a ball joint locking device, which includes: a foot boot connecting piece, the foot boot connecting piece includes a foot boot connecting seat and a ball joint, one end of the foot boot connecting seat is connected to the foot boot, and the other end is connected to the ball joint, the ball joint includes a connecting rod and a ball connecting head, one end of the connecting rod is connected to the foot boot connecting seat, and the other end is connected to the ball connecting head; the ball joint seat, the ball joint seat includes a ball joint through hole, the ball joint is penetrated by the joint through hole, and the ball joint can rotate relative to the ball joint seat; a locking structure, the locking structure is located between the ball joint and the traction bracket, the locking structure includes a lead screw, a lead screw nut and an abutment assembly, one end of the lead screw is connected to the traction bracket, and the other end is connected to the ball joint seat, the abutment assembly is located between the lead screw nut and the ball joint, and abuts with the lead screw nut; wherein the lead screw nut has a first position and a second position, the lead screw nut can move between the first position and the second position, when the lead screw nut is in the first position, the abutment assembly is spaced apart from the ball joint, and when the lead screw nut is in the second position, the abutment assembly abuts with the ball joint.

[0006] In this way, the abutment and spacing between the ball joint and the abutment assembly are achieved by setting an abutment assembly driven by a screw nut, thereby realizing the switching between the fixed state and the movable state of the ball joint. Therefore, when it is necessary to adjust the rotation angle between the foot boot and the traction bracket, it is only necessary to rotate the screw nut to space the abutment assembly from the ball joint. After rotating the foot boot to the target angle, the screw nut is rotated to space the abutment assembly from the ball joint, so that the foot boot and the traction bracket form a rigid body, thereby ensuring that the position between the foot boot and the traction bracket is fixed.

[0007] In some embodiments of the present application, the joint through hole includes a spherical hole section and a cylindrical hole section, the spherical hole section is located on the side of the cylindrical hole section facing the foot boot connecting seat, the ball joint is penetrated through the spherical hole section, the peripheral wall of the cylindrical hole section is provided with a first through hole, the lead screw is penetrated through the cylindrical hole section, and the lead screw is provided with a second through hole corresponding to the first through hole; the ball joint locking device also includes: a first positioning pin, the first positioning pin is sequentially penetrated through the first through hole and the second through hole.

[0008] In some embodiments of the present application, the ball joint locking device also includes: a limit block; the abutment assembly includes: an abutment body, the abutment body is provided with an abutment groove, the abutment groove extends radially along the abutment body and penetrates the abutment body, and the opening of the abutment groove is located on the side surface of the abutment body away from the foot boot connecting seat; the limit block cooperates with the abutment groove, the limit block extends out of the outer circumferential surface of the abutment body and abuts against the inner circumferential surface of the cylindrical hole section, in the axial direction of the abutment body, the height dimension of the limit block is smaller than the depth dimension of the abutment groove, the limit block is provided with a third through hole opposite to the first through hole, and the first positioning pin is passed through the first through hole, the second through hole and the third through hole.

[0009] In some embodiments of the present application, the abutment assembly further includes: a sealing cover, the sealing cover is used to seal the opening of the abutment groove, and the lead screw is passed through the sealing cover and the limit block.

[0010] In some embodiments of the present application, the abutment assembly also includes: an abutment cover, which is connected to the end of the abutment body away from the foot boot connecting seat, the abutment cover and the sealing cover are detachably connected, the radial dimension of the abutment cover is larger than the radial dimension of the abutment body, the abutment cover is provided with a strip hole, the strip hole is arranged opposite to the opening of the abutment groove, and the limit block can pass through the strip hole.

[0011] In some embodiments of the present application, the abutment assembly includes an abutment surface facing the ball joint, and the abutment surface is formed as a tapered groove.

[0012] In some embodiments of the present application, the sealing cover is detachably connected to the abutting body.

[0013] In some embodiments of the present application, the ball joint locking device further includes: a clamping handle, which is disposed on the outer peripheral surface of the lead screw nut.

[0014] In some embodiments of the present application, the foot boot connection socket and the ball joint are detachably connected.

[0015] In some embodiments of the present application, the ball joint locking device further includes: a traction rod, the traction rod is located between the lead screw and the traction bracket, one end of the traction rod is detachably connected to the lead screw, and the other end is connected to the traction bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 An exploded view of a ball joint locking device provided in some embodiments of the present application;

[0019] Figure 2 for Figure 1 Schematic diagram of the ball joint shown in;

[0020] Figure 3 for Figure 1 A schematic diagram of a ball joint seat shown in ;

[0021] Figure 4 for Figure 1 A schematic diagram of the abutment body shown in ;

[0022] Figure 5 for Figure 1 Schematic diagram of the limit block shown in .

[0023] Reference numerals:

[0024] 100. Ball joint locking device;

[0025] 110. Foot boot connector; 111. Foot boot connector seat; 112. Ball joint; 1121. Connecting rod; 1122. Ball connector;

[0026] 120, ball joint seat; 1211, spherical hole section; 1212, cylindrical hole section; 1213, avoidance hole section;

[0027] 131, lead screw; 132, lead screw nut; 1331, abutment body; 1332, abutment groove; 1333, limit block; 1334, sealing cover; 1335, abutment cover; 1336, abutment surface;

[0028] 140, first positioning pin;

[0029] 150, second positioning pin;

[0030] 160, third positioning pin;

[0031] 170. Press the handle tightly;

[0032] 180, traction rod;

[0033] 190. Limit bolt. DETAILED DESCRIPTION

[0034] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the scheme of the utility model will be further described below. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present invention, rather than all of the embodiments.

[0036] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0038] In the description of the embodiments of the present invention, the term "and / or" refers to and covers any and all possible combinations of one or more of the associated listed items. The term "and / or" is a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects before and after are in an "or" relationship.

[0039] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed connection" means that the two are connected to each other and the relative position relationship after the connection remains unchanged. In addition, the directional terms mentioned in the embodiments of the present utility model, such as "inside", "outside", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present utility model.

[0040] Currently, when medical lower limb traction equipment is used, foot boots are installed on the traction frame to facilitate the placement or fixation of the foot.

[0041] At present, there are various ways to adjust and fix the position between the boot and the traction bracket, which have the problems of long adjustment time, complicated and inconvenient steps; specifically, the joint locking structure used in the boot is unreliable and has poor load-bearing capacity, and the position of the boot is prone to change under load.

[0042] To solve the above technical problems, please refer to Figure 1 , Figure 1 An exploded view of a ball joint locking device 100 provided in some embodiments of the present application. The present application provides a ball joint locking device 100. The ball joint locking device 100 may include: a foot boot connector 110, a ball joint seat 120 and a locking structure.

[0043] Among them, the foot boot connecting part 110 may include a foot boot connecting seat 111 and a ball joint 112, the foot boot connecting seat 111 includes a connected foot boot connecting section, a ball joint connecting section and a limiting bolt 190, the foot boot connecting section is detachably connected to the foot boot, specifically, a foot boot connecting column is provided on the foot boot, the foot boot connecting section is sleeved on the circumferential outer side of the foot boot connecting column, the peripheral wall of the foot boot connecting section is provided with a threaded hole, the limiting bolt 190 is passed through the threaded hole, so as to realize the detachable connection between the foot boot connecting seat 111 and the foot boot.

[0044] See also Figure 1 and Figure 2 , Figure 2 for Figure 1; the ball joint 112 may include a connecting rod 1121 and a spherical connector 1122, one end of the connecting rod 1121 is connected to the foot boot connection seat 111, and the other end is connected to the spherical connector 1122. Specifically, the foot boot connection seat 111 and the ball joint 112 are detachably connected, the ball joint connecting section is sleeved on the circumferential outer side of the connecting rod 1121, the circumferential wall of the ball joint connecting section is provided with a fourth through hole, the connecting rod 1121 is provided with a fifth through hole, and the foot boot connector 110 further includes a second locating pin 150, which is passed through the fourth through hole and the fifth through hole to achieve a detachable connection between the connecting rod 1121 and the foot boot connection seat 111.

[0045] See also Figure 3 , Figure 3 for Figure 1 The schematic diagram of the ball joint seat 120 is shown in the figure; the ball joint seat 120 may include a ball joint through hole, the ball joint through hole includes a spherical hole section 1211, a cylindrical hole section 1212 and an avoidance hole section 1213, the cylindrical hole section 1212 is located between the spherical hole section 1211 and the avoidance hole section 1213, the ball joint 112 spherical hole section 1211 cooperates, and the ball joint 112 can rotate relative to the ball joint seat 120.

[0046] Please continue reading Figure 1 The locking structure is located between the ball joint 112 and the traction bracket. The locking structure includes a screw 131, a screw nut 132 and an abutment assembly. One end of the screw 131 is connected to the traction bracket, and the other end is connected to the ball joint seat 120. The abutment assembly is located between the screw nut 132 and the ball joint 112, and abuts against the screw nut 132.

[0047] In some embodiments of this application, please continue to refer to Figure 1 A traction rod 180 is also provided between the lead screw 131 and the traction bracket, one end of the traction rod 180 is detachably connected to the lead screw 131, and the other end is connected to the traction bracket. Specifically, a sixth through hole is provided on the lead screw 131, a seventh through hole is provided on the traction rod 180, and a third locating pin 160 is provided on the traction rod 180. The third locating pin 160 is passed through the sixth through hole and the seventh through hole to realize a detachable connection between the lead screw 131 and the traction rod 180.

[0048] The lead screw nut 132 has a first position and a second position. The lead screw nut 132 can move between the first position and the second position through the threaded fit between the lead screw 131 and the lead screw nut 132. When the lead screw nut 132 is in the first position, the abutment assembly is spaced apart from the ball joint 112, the ball joint 112 can rotate relative to the ball joint seat 120, and the foot boot can adjust the angle with the traction bracket. When the lead screw nut 132 is in the second position, the abutment assembly abuts against the ball joint 112, the ball joint seat 120 is fixed to the ball joint 112, and the position between the foot boot and the traction bracket is fixed.

[0049] In this way, the abutment and spacing between the ball joint 112 and the abutment assembly are achieved by setting an abutment assembly driven by the screw nut 132, thereby realizing the switching of the ball joint 112 between a fixed state and a movable state. Therefore, when it is necessary to adjust the rotation angle between the foot boot and the traction bracket, it is only necessary to rotate the screw nut 132 to space the abutment assembly from the ball joint 112. After rotating the foot boot to the target angle, the screw nut 132 is rotated to make the abutment assembly abut against the ball joint 112, so that the foot boot and the traction bracket become a rigid body, thereby ensuring that the position between the foot boot and the traction bracket is fixed, and the adjustment is simple and the locking effect is reliable.

[0050] In some embodiments of this application, please continue to refer to Figure 1 and Figure 3 The abutment assembly extends into the cylindrical hole section 1212, so as to ensure the stability of the position between the ball joint seat 120 and the abutment assembly and avoid radial movement of the abutment assembly, which would affect the overall stability of the device.

[0051] In some embodiments of the present application, a first through hole is provided on the peripheral wall of the cylindrical hole section 1212, the lead screw 131 is passed through the abutment assembly, the lead screw 131 is provided with a second through hole opposite to the first through hole, and the ball joint locking device 100 may further include a first positioning pin 140, and the first positioning pin 140 is sequentially passed through the first through hole and the second through hole, thereby realizing a detachable connection between the lead screw 131 and the ball joint seat 120.

[0052] In some embodiments of this application, please refer to Figure 1 , Figure 4 and Figure 5 The ball joint locking device 100 may further include a stopper 1333, and the abutting assembly may include an abutting body 1331 and a sealing cover 1334. The abutting body 1331 is provided in an abutting groove 1332, and the abutting groove 1332 extends along the radial direction of the abutting body 1331 and penetrates the abutting body 1331. The opening of the abutting groove 1332 is located on a side surface of the abutting body 1331 away from the foot boot connection seat 111. In other words, the abutting groove 1332 includes an opening and two side openings.

[0053] The stopper 1333 cooperates with the abutment groove 1332, and the stopper 1333 extends out of the outer circumferential surface of the abutment body 1331 and abuts against the inner circumferential wall of the cylindrical hole section 1212, that is, in the radial direction of the abutment body 1331, the length of the stopper 1333 is greater than the length of the abutment body 1331. Further, the height dimension of the stopper 1333 is less than the depth dimension of the abutment groove 1332, that is, the abutment body 1331 can move relative to the stopper 1333 in the depth direction of the abutment groove 1332.

[0054] Among them, a third through hole opposite to the first through hole is provided on the limit block 1333, and the first positioning pin 140 is penetrated through the first through hole, the second through hole and the third through hole, thereby forming a rigid body with the limit block 1333, the screw 131 and the ball joint seat 120, and the abutment assembly can move in the depth direction of the abutment groove 1332 relative to the limit block 1333, so as to realize the movement of the abutment assembly between the first position and the second position.

[0055] The sealing cover 1334 is used to seal the opening of the abutment groove 1332, and the lead screw 131 is passed through the sealing cover 1334 and the limit block 1333. By providing the sealing cover 1334, the limit block 1333 can be prevented from being separated from the abutment body 1331.

[0056] The sealing cover 1334 can be detachably connected to the abutting body 1331 .

[0057] That is to say, the screw 131, the limit block 1333 and the ball joint seat 120 become a rigid body. When the screw nut 132 moves toward the foot boot connecting seat 111, the screw nut 132 pushes the sealing cover 1334 and the abutting body 1331 to move, so that the abutting body 1331 can abut against the ball joint 112.

[0058] In some embodiments of the present application, the abutment assembly may further include an abutment cover 1335, which is connected to one end of the abutment body 1331 away from the foot boot connection seat 111, the radial dimension of the abutment cover 1335 is larger than the radial dimension of the abutment body 1331, and the abutment cover 1335 is provided with a strip hole, which is arranged opposite to the opening of the abutment groove 1332, and the projection of the opening of the abutment groove 1332 on the plane where the strip hole is located is located inside the strip hole. In other words, the limit block 1333 can pass through the strip hole.

[0059] Thus, on one hand, the abutment cover 1335 and the sealing cover 1334 are provided to realize the detachable connection between the abutment body 1331 and the sealing cover 1334, and specifically, the abutment cover 1335 and the sealing cover 1334 are connected by screws. On the other hand, the strength of the circumferential edge of the abutment cover 1335 can be improved.

[0060] Furthermore, by providing the abutment cover 1335 and the sealing cover 1334, the abutment area between the lead screw nut 132 and the abutment assembly can be increased, thereby improving the stability of the lead screw nut 132 and the abutment assembly during transmission.

[0061] The abutment cover 1335 and the sealing cover 1334 are located on the circumferential inner side of the avoidance hole section 1213 of the ball joint seat 120 , and the avoidance hole section 1213 provides an installation position for the abutment cover 1335 and the sealing cover 1334 .

[0062] In some embodiments of the present application, the abutment assembly may include an abutment surface 1336 facing the ball joint 112, and the abutment surface 1336 is formed as a conical concave surface. By setting the abutment surface 1336 as a conical groove, the abutment assembly and the ball joint 112 are in line contact, thereby ensuring the stability of the abutment between the abutment assembly and the ball joint 112. The cone angle of the abutment surface 1336 is greater than or equal to 30° and less than or equal to 60°.

[0063] In some embodiments of the present application, the ball joint locking device 100 may further include a clamping handle 170 , which is disposed on the outer peripheral surface of the lead screw nut 132 . Thus, by providing the clamping handle 170 , it is convenient for the user to rotate the lead screw nut 132 .

[0064] There may be multiple clamping handles 170 . Specifically, there may be two clamping handles 170 , and the two clamping handles 170 are arranged opposite to each other.

[0065] During the specific operation process, when the angle between the boot and the traction bracket needs to be adjusted, the screw nut 132 is rotated by tightening the handle 170, and the screw nut 132 drives the sealing cover 1334 and the abutting body 1331 to move away from the ball joint 112, so that the abutting surface 1336 is separated from the ball joint 112, and then the boot is rotated. When the boot is rotated to the target position, the screw nut 132 is rotated again by tightening the handle 170, and the screw nut 132 pushes the sealing cover 1334 and the abutting body 1331 to move toward the ball joint 112, so that the abutting surface 1336 abuts against the ball joint 112, so that the boot and the traction bracket are fixed again.

[0066] In the description of the embodiments of the present utility model, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In the absence of further restrictions, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0067] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A ball joint locking device, It is characterized in that include: A boot connector, the boot connector comprising a boot connector seat and a ball joint, one end of the boot connector seat is connected to the boot, and the other end is connected to the ball joint, the ball joint comprises a connecting rod and a ball connector, one end of the connecting rod is connected to the boot connector seat, and the other end is connected to the ball connector; A ball joint seat, the ball joint seat comprising a ball joint through hole, the ball joint is penetrated by the joint through hole, and the ball joint can rotate relative to the ball joint seat; A locking structure, the locking structure is located between the ball joint and the traction bracket, the locking structure comprises a lead screw, a lead screw nut and an abutment assembly, one end of the lead screw is connected to the traction bracket, and the other end is connected to the ball joint seat, the abutment assembly is located between the lead screw nut and the ball joint, and abuts against the lead screw nut; Wherein, the screw nut has a first position and a second position, and the screw nut can move between the first position and the second position. When the screw nut is in the first position, the abutment assembly is spaced apart from the ball joint, and when the screw nut is in the second position, the abutment assembly abuts against the ball joint.

2. The ball joint locking device according to claim 1, It is characterized in that The joint through hole includes a spherical hole section and a cylindrical hole section, the spherical hole section is located on the side of the cylindrical hole section facing the foot boot connection seat, the ball joint is penetrated by the spherical hole section, the peripheral wall of the cylindrical hole section is provided with a first through hole, the lead screw is penetrated by the cylindrical hole section, and the lead screw is provided with a second through hole corresponding to the first through hole; The ball joint locking device further includes: a first positioning pin, which is sequentially inserted into the first through hole and the second through hole.

3. The ball joint locking device according to claim 2, It is characterized in that Also includes: Limit block; The abutment assembly comprises: An abutting body, wherein the abutting body is provided with an abutting groove, the abutting groove extends along the radial direction of the abutting body and penetrates the abutting body, and the opening of the abutting groove is located on a side surface of the abutting body away from the foot boot connecting seat; The limit block cooperates with the abutment groove, the limit block extends out of the outer circumferential surface of the abutment body and abuts against the inner circumferential surface of the cylindrical hole segment, in the axial direction of the abutment body, the height dimension of the limit block is smaller than the depth dimension of the abutment groove, the limit block is provided with a third through hole opposite to the first through hole, and the first positioning pin is penetrated through the first through hole, the second through hole and the third through hole.

4. The ball joint locking device according to claim 3, It is characterized in that The abutment assembly further comprises: A sealing cover is used to seal the opening of the abutting groove, and the lead screw is passed through the sealing cover and the limit block.

5. The ball joint locking device according to claim 4, It is characterized in that The abutment assembly further comprises: An abutment cover, wherein the abutment cover is connected to one end of the abutment body away from the foot boot connecting seat, the abutment cover is detachably connected to the sealing cover, the radial dimension of the abutment cover is larger than the radial dimension of the abutment body, the abutment cover is provided with a strip hole, the strip hole is arranged opposite to the opening of the abutment groove, and the limit block can pass through the strip hole.

6. The ball joint locking device according to claim 1, It is characterized in that The abutment assembly includes an abutment surface facing the ball joint, and the abutment surface is formed as a conical concave surface.

7. The ball joint locking device according to claim 4, It is characterized in that The sealing cover is detachably connected to the abutting body.

8. The ball joint locking device according to claim 1, It is characterized in that Also includes: A clamping handle is arranged on the outer peripheral surface of the lead screw nut.

9. The ball joint locking device according to claim 1, It is characterized in that The foot boot connection seat and the ball joint are detachably connected.

10. The ball joint locking device according to claim 1, It is characterized in that Also includes: A traction rod is located between the lead screw and the traction bracket, one end of the traction rod is detachably connected to the lead screw, and the other end is connected to the traction bracket.

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