Nail feeding device for screw-plug-free nail rod system and using method

Abstract

The invention discloses a screw feeding device for a screw-plug-free screw rod system and a using method, and the screw feeding device comprises a moving mechanism which is detachably connected with a ball head screw and a screw seat to be fed into a body; the moving mechanism comprises a core rod extending in the first direction. The limiting mechanisms comprise the first limiting mechanisms and the second limiting mechanisms, and the first limiting mechanisms are arranged on the two sides of the core rod in the second direction and are relatively and fixedly connected with the core rod; the second limiting mechanisms are arranged on the two sides of the core rod in the third direction, one end of each second limiting mechanism is pivotally connected with the core rod in a relative movement manner, and the other end is detachably connected with the nail seat; the second limiting mechanism is provided with a rail penetrating through the second direction, a first connecting rod is arranged on the first limiting mechanism, and the first connecting rod penetrates through the rail to be connected with the oppositely-arranged first limiting mechanism; the first limiting mechanism drives the first connecting rod to move between the first position and the second position in the track, and the opening angle of the second limiting mechanism is changed. According to the invention, the ball head nail can be quickly and stably fixed on the cone.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and more particularly to a nailing device for a screwless nail rod system and a method of using the same. Background Art

[0002] The traditional posterior nail rod fixing structure has the problem that the screw plug parts are small and difficult to install. At the same time, the screw seat is large in size, which causes great interference and damage to human soft tissues and a long recovery period. Therefore, a more stable, smaller, less prone to interference and damage posterior nail rod fixing structure is needed. In response to this problem, the prior art proposes a new type of posterior nail rod fixing structure. Through the cooperation of the nail seat and the U-shaped clamping rod notch, the ball head nail can swing flexibly and has a wide range of swing angles. When locking, it is directly pressed into the groove of the U-shaped clamping seat without tightening the screw plug.

[0003] However, it is difficult to nail this type of ball-head nail, and there is an urgent need for a nailing device to quickly and effectively implant this type of ball-head nail into the tissue of the cone. Summary of the invention

[0004] The present application is proposed based on the above-mentioned requirements of the prior art. The technical problem to be solved by the present application is to provide a nail driver for a screwless nail rod system and a method of use to quickly and stably fix the ball nail on the cone.

[0005] In order to solve the above problems, the present application is implemented by adopting the following technical solutions:

[0006] A nailing device for a screwless nail rod system is provided, comprising: a moving mechanism, which is detachably connected to a ball-head nail and a nail seat to be inserted into a body; the moving mechanism comprises a core rod, the core rod extends along a first direction; the ball-head nail is connected to the nail seat; a limiting mechanism comprises a first limiting mechanism and a second limiting mechanism, the first limiting mechanism is arranged on both sides of the core rod in the second direction, the first limiting mechanism is relatively fixedly connected to the core rod to follow the movement of the core rod; the second limiting mechanism is arranged on both sides of the core rod in the third direction, one end of the second limiting mechanism is pivotally connected to the core rod so as to be relatively movable, and the other end is detachably connected to the nail seat The second limiting mechanism has a track running through the second direction, and the first limiting mechanism is provided with a first connecting rod, which passes through the track to connect the first limiting mechanism which is relatively arranged; the first limiting mechanism drives the first connecting rod to move between the first position and the second position in the track to drive the second limiting mechanism to approach or move away from the direction of the core rod, thereby changing the opening angle of the second limiting mechanism; when the first limiting mechanism is in the first position, the second limiting mechanism is at the maximum opening angle; when the first limiting mechanism is in the second position, the second limiting mechanism is at the minimum opening angle, and the core rod is relatively fixed to the ball stud and the nail seat.

[0007] By connecting the first limiting mechanism with the nail seat, the relative movement of the ball nail, the nail seat and the core rod in the second direction can be limited, and the position of the second limiting mechanism can be quickly determined; by connecting the second limiting mechanism with the nail seat, the relative movement of the ball nail, the nail seat and the core rod in the third direction can be limited; by cooperating with the first limiting mechanism and the second limiting mechanism, the relative fixation of the ball nail, the nail seat and the core rod is achieved. This fixing method is simple to operate, saves time and effort, and can quickly and stably fix the ball nail on the cone.

[0008] Optionally, the moving mechanism includes a fixed sleeve and a rotating member; one end of the fixed sleeve is fixedly connected to the second limiting mechanism, and the other end is threadedly connected to the rotating member; the core rod passes through the fixed sleeve and is fixedly connected to the rotating member.

[0009] With this arrangement, when the rotating member rotates along the thread, the fixed sleeve and the rotating member produce relative displacement, thereby driving the core rod to move. The core rod is driven to move linearly by rotation, so that the core rod moves smoothly, which is convenient for users to operate.

[0010] Optionally, a matching groove is provided on the core rod; the first limiting mechanism includes a first protrusion, which extends from the inner wall of the matching groove in a direction away from the bottom of the matching groove; one end portion of the second limiting mechanism is located in the matching groove, and when the core rod moves, the matching groove is driven to move, so that the second limiting mechanism and the matching groove produce relative displacement.

[0011] With this arrangement, when the core rod moves, the first connecting rod of the first limiting mechanism applies a thrust to the inner wall of the track toward or away from the matching groove, pushing the second limiting mechanism to move toward or away from the matching groove, thereby controlling the opening angle of the first limiting mechanism to adapt to different nail seats.

[0012] Optionally, the first limiting mechanism includes a second protrusion, the second protrusion is arranged at the end of the core rod connected to the nail seat, and the two second protrusions are symmetrically arranged in the second direction; the nail seat has a first matching piece, and the second protrusion is adapted to the first matching piece.

[0013] With this arrangement, the second protrusion and the first matching piece can be quickly aligned, thereby increasing the nailing speed.

[0014] Optionally, the second limiting mechanism includes a first plate and a bending portion, the first plate is arranged above the matching groove, has the same extension direction as the matching groove, and is at least partially located in the matching groove; the bending portion is arranged at the end of the first plate close to the nail seat, the bending portion has a protrusion, and the protrusion is arranged in the direction of the nail seat; the nail seat has a second matching piece, and the protrusion is adapted to the second matching piece.

[0015] With this arrangement, the bent portion and the first plate form a concave area, which provides a moving space for the second limiting mechanism to avoid hindering the connection between the second limiting mechanism and the nail seat. As the core rod moves, the area of ​​the side of the first plate close to the matching groove entering the matching groove gradually increases, ensuring that the second limiting mechanism moves smoothly.

[0016] Optionally, the track has an extension component in a direction away from the mating groove and an extension component opposite to the extension direction of the core rod; the track includes a first track and a second track, the first track is arranged close to the mating groove, the second track is arranged away from the mating groove, the first track is connected to the second track, and the connection position is inclined.

[0017] With this arrangement, when the first connecting rod moves on the first track and the second track respectively, it plays a role in fine-tuning the opening angle of the second limiting mechanism. When the first connecting rod transitions from the first track to the second track, the opening angle of the second limiting mechanism can be quickly adjusted.

[0018] Optionally, the fixed sleeve includes a middle sleeve, the middle sleeve has a first through space for the core rod to pass through, and both ends of the core rod are exposed outside the middle sleeve; the end of the middle sleeve close to the nail seat has a second gap running through a third direction, and the second gap is opposite to the matching groove; the second limiting mechanism is partially inserted in the second gap and the matching groove; the second limiting mechanism is provided with a second connecting rod, the second connecting rod runs through the second limiting mechanism, and is fixedly connected to the middle sleeve.

[0019] With this arrangement, by providing the middle sleeve, on the one hand, the stability of the second limiting mechanism during movement is enhanced; on the other hand, when the second limiting mechanism is located at the second position, the second limiting mechanism is prevented from being exposed outside the fixed sleeve, thereby reducing the contact area of ​​the soft tissue in front of the vertebral body and avoiding scratching of the human soft tissue as much as possible.

[0020] Optionally, a third protrusion is provided on the outer wall of the middle sleeve, and a third track extending along the first direction is provided on the third protrusion, and the third track passes through the inner and outer walls of the middle sleeve; a second opening and a third connecting rod are provided on the core rod, and the second opening is arranged opposite to the third track, and the third connecting rod passes through the third track and the second opening, and is fixedly connected to the core rod at the second opening.

[0021] When the core rod moves, the third connecting rod is driven to move in the third track, and the moving distance of the core rod is limited by limiting the moving distance of the third connecting rod, thereby achieving the purpose of limiting the moving distance of the core rod.

[0022] Optionally, the rotating member has a through hole passing through along the first direction, and the end of the middle sleeve away from the limiting mechanism is in the through hole and is threadedly connected to the rotating member; the inner wall of the through hole is protrudingly provided with a first blocking member and a second blocking member surrounding the core rod, the first blocking member is connected to the middle sleeve, and the second blocking member is fitted with the core rod; there is a recessed space between the first blocking member and the second blocking member; a second blocking ring is provided on the core rod, the second blocking ring is adapted to the recessed space, and the second blocking ring is installed in the recessed space.

[0023] With this arrangement, the rotating member and the core rod are stably fixed relative to each other.

[0024] Provided is a method for using a nail driver for a screwless nail rod system. Using the nail driver for a screwless nail rod system comprises: controlling a core rod to drive a first limiting mechanism to move in the direction of a first position, so that a second limiting mechanism is opened; connecting the core rod to a ball nail, and connecting the first limiting mechanism to a nail seat; controlling the core rod to drive the first limiting mechanism to move in the direction of a second position, until the second limiting mechanism is connected to the nail seat, so that the core rod, the ball nail and the nail seat are relatively fixed; and rotating the core rod to insert the ball nail into a cone.

[0025] Compared with the prior art, the present invention provides a nailing device for a screwless nail rod system and a method of use, wherein the relative fixation of the ball nail, the nail seat and the core rod is achieved through the cooperation of the first limiting mechanism and the second limiting mechanism. This fixing method is simple to operate, saves time and effort, and can quickly and stably fix the ball nail on the cone. Through the rotating member and the fixing sleeve, the core rod can be stably moved and rotated, thereby improving stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this specification. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0027] Figure 1 This is a schematic diagram of the connection between a nail driver, a ball stud and a nail seat for a screwless nail rod system provided by this embodiment;

[0028] Figure 2 1 is a schematic structural diagram of a nailing device for a screwless nailing rod system provided in this embodiment;

[0029] Figure 3 is a cross-sectional view of a nailing device for a screwless nail rod system provided by this embodiment;

[0030] Figure 4 is a first stereoscopic view of a ball stud provided by this embodiment;

[0031] Figure 5 is a second stereoscopic view of a ball stud provided in this embodiment;

[0032] Figure 6-Figure 11 It is a partial structural schematic diagram of a nailing device for a screwless nail rod system provided by this embodiment;

[0033] Fig.12 1 is a schematic structural diagram of a second limiting mechanism of a nailing device for a screwless nail rod system provided by this embodiment;

[0034] Fig.13 It is a schematic structural diagram of a rotating part in a nail driver for a screwless nail rod system provided in this embodiment. Description of the drawings:

[0036] 1-ball head nail; 2-nail seat; 210-first matching piece; 220-second matching piece; 3-core rod; 300-screwdriver head; 310-rod; 311-pin; 4-matching groove; 5-first limiting mechanism; 500-first protrusion; 510-second protrusion; 6-first connecting rod; 7-first opening; 8-second limiting mechanism; 800-first plate; 810-bending part; 9-track; 900-first track; 910-second track; 10-first gap; 110- Middle sleeve; 111-outer sleeve; 12-second slit; 13-first through hole; 14-second through hole; 15-second connecting rod; 16-third protrusion; 17-third track; 18-second opening; 19-third connecting rod; 20-protrusion; 21-first retaining ring; 22-fourth protrusion; 23-first retaining ring; 24-rotating member; 25-through hole; 26-annular groove; 27-second retaining ring; 28-second retaining ring; 29-third retaining ring; 30-third retaining ring; 31-second thread. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0038] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "connected" should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, or an integral connection, which can be a mechanical connection, or an electrical connection, which can be a direct connection, or can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The terms "top", "bottom", "above", "lower", and "on" used throughout the description are relative to the relative positions of components of a device, such as the relative positions of the top and bottom substrates within a device. It is understood that devices are multifunctional regardless of their orientation in space.

[0040] To facilitate understanding of the embodiments of the present application, further explanation will be given below with reference to specific embodiments in conjunction with the accompanying drawings. The embodiments do not constitute a limitation of the present invention.

[0041] This embodiment provides a nailing device for a screwless nailing rod system, such as Figure 1-Figure 3 As shown, the nailing device comprises:

[0042] The moving mechanism is detachably connected to the ball stud 1 and the stud seat 2 to be inserted into the body, and controls the ball stud 1 to move into the cone. The ball stud 1 is used to fix the cone in the posterior nail rod fixation surgery. Figure 4 and Figure 5 As shown, the proximal end of the ball stud 1 is a pointed tip for easy insertion; a surface near the proximal end of the ball stud 1 is provided with threads to enhance the fixing force. The distal end of the ball stud 1 is a sphere. The proximal end is the end close to the cone, and the distal end is the end away from the cone. The nail seat 2 is connected to the ball stud 1 and has a accommodating space that runs through the first direction. The distal end of the ball stud 1 is arranged in the accommodating space, and the rest of the ball stud 1 is exposed outside the accommodating space; the ball stud 1 cooperates with the nail seat 2 so that the ball stud 1 can swing freely within a certain angle range to adapt to the physiological curvature and movement of the spine.

[0043] The moving mechanism comprises a core rod 3 , which extends along a first direction and can be fixed relative to the ball stud 1 and the stud seat 2 .

[0044] like Figure 6 and Figure 7As shown, the core rod 3 includes a screwdriver head 300 and a rod portion 310, one end of the screwdriver head 300 is connected to the ball stud 1, and the other end is connected to the rod portion 310. Specifically, the distal end of the ball stud 1 is provided with a first groove, the first groove is matched with one end of the screwdriver head 300, and the end of the rod portion 310 close to the screwdriver head 300 is provided with a second groove, the other end of the screwdriver head 300 is matched with the second groove and inserted into the second groove. During use, the end of the screwdriver head 300 matched with the first groove enters the accommodating space and is inserted into the first groove, so that the moving mechanism can drive the ball stud 1 to rotate. With this arrangement, the connection between different ball studs 1 and different core rods 3 can be achieved by simply replacing the screwdriver head 300. In addition, the middle portion of the screwdriver head 300 protrudes from the end of the screwdriver head 300 connected to the rod 310, and the protruding portion is connected to the end surface of the rod 310 to prevent the screwdriver head 300 from moving in the extension direction of the rod 310. In this embodiment, the screwdriver head 300 and the rod 310 can also be fixedly connected by a pin 311.

[0045] The rod 310 is provided with a matching groove 4 at the end close to the screwdriver head 300 . The matching groove 4 extends along a first direction. Two matching grooves 4 are symmetrically arranged on both sides of the rod 310 in a third direction. Preferably, the third direction is perpendicular to the first direction.

[0046] The core rod 3 is provided with a limiting mechanism, and the limiting mechanism cooperates with the matching groove 4 to achieve relative fixation of the ball stud 1 and the stud seat 2.

[0047] The limiting mechanism comprises a first limiting mechanism 5 and a second limiting mechanism 8 .

[0048] The first limiting mechanism 5 is disposed on both sides of the core rod 3 in the second direction, and is relatively fixedly connected to the core rod 3 to move with the core rod 3 .

[0049] like Figure 8 and Fig. 9 As shown, the first limiting mechanism 5 includes a first protrusion 500, which extends from the inner wall of the matching groove 4 to the direction away from the bottom of the matching groove 4, and the two first protrusions 500 are symmetrically arranged on both sides of the matching groove 4 in the second direction. The first limiting mechanism 5 is provided with a first connecting rod 6, and the two ends of the first connecting rod 6 are connected to the first protrusions 500 arranged oppositely. Exemplarily, the first protrusion 500 has a first opening 7 that runs through the second direction, and the first opening 7 is adapted to the first connecting rod 6. The two ends of the first connecting rod 6 pass through the first openings 7 of the two first protrusions 500, and are fixedly connected by laser welding.

[0050] The first limiting mechanism 5 includes a second protrusion 510, which extends from the end face of the rod 310 connected to the screwdriver head 300 in the opposite direction of the extension direction of the rod 310. The two second protrusions 510 are symmetrically arranged in the second direction to form a groove-shaped space with the end face of the core rod 3. The nail seat 2 has a first matching piece 210 adapted to the second protrusion 510. During the connection process between the nail seat 2 and the first limiting mechanism 5, the second protrusion 510 is placed in the first matching piece 210 to determine the connection position of the second limiting mechanism 8 and the nail seat 2. In this embodiment, the first matching piece 210 is groove-shaped.

[0051] Preferably, the second protrusion 510 is arranged with both ends in the second direction protruding from the first protrusion 500, and the second protrusion 510 is connected to the first protrusion 500 via an inclined surface. This arrangement is convenient for the operator to use and align the second protrusion 510 with the first matching piece 210 more quickly.

[0052] The second limiting mechanism 8 is disposed on both sides of the core rod 3 in the third direction, one end of which is pivotally connected to the core rod 3 for relative movement, and the other end of which is detachably connected to the nail seat 2 .

[0053] The length of the second limiting mechanism 8 in the second direction is adapted to the length of the matching groove 4 in the second direction. The end of the second limiting mechanism 8 away from the screwdriver head 300 is at least partially located in the matching groove 4, and the end close to the screwdriver head 300 is detachably connected to the nail seat 2.

[0054] like Figure 7 As shown, the second limiting mechanism 8 includes a first plate 800 and a bending portion 810. The first plate 800 is arranged above the matching groove 4, in the same extension direction as the matching groove 4, and at least partially located in the matching groove 4. The bending portion 810 is arranged at the end of the first plate 800 close to the screwdriver head 300, and forms a concave area with the first plate 800. The concave area provides a moving space for the second limiting mechanism 8 to avoid hindering the connection between the second limiting mechanism 8 and the nail seat 2. The bending portion 810 includes a convex block, which is arranged toward the nail seat 2, and the convex block is adapted to the second matching piece 220 on the nail seat 2. Preferably, the second matching piece 220 is a groove type, and the opening of the second matching piece 220 faces the direction away from the nail seat 2. When the second limiting mechanism 8 is connected to the nail seat 2, the convex block is placed in the second matching piece 220 on the nail seat 2, so that the core rod 3 is relatively fixed with the ball stud 1 and the nail seat 2. As the core rod 3 moves, the area of ​​the side of the first plate 800 close to the matching groove 4 entering the matching groove 4 gradually increases, thereby improving the stability during the movement.

[0055] The second limiting mechanism 8 has a track 9 that runs through the second direction, and the track 9 is at least partially located in the first gap 10 between the two first protrusions 500, and the first connecting rod 6 passes through the track 9 and can move in the track 9. The track 9 has an extension component in the direction away from the matching groove 4 and an extension component opposite to the extension direction of the core rod 3. During the movement of the first limiting mechanism 5 toward the direction close to the ball stud 1, the first connecting rod 6 of the first limiting mechanism 5 provides a thrust in the direction of the matching groove 4 on the inner wall of the track 9, pushing the second limiting mechanism 8 to move in the direction of the matching groove 4, and controlling the opening angle of the first limiting mechanism 5. Similarly, during the movement of the first limiting mechanism 5 toward the direction away from the ball stud 1, the first connecting rod 6 of the first limiting mechanism 5 applies a thrust in the direction away from the matching groove 4 on the inner wall of the track 9, pushing the second limiting mechanism 8 to move in the direction away from the matching groove 4.

[0056] like Fig.12 As shown, the track 9 is provided with a first position and a second position. When the core rod 3 moves, the first limiting mechanism 5 is driven to move between the first position and the second position in the track 9, and the second limiting mechanism 8 is controlled to approach or move away from the direction of the core rod 3, thereby changing the opening angle of the second limiting mechanism 8. When the first limiting mechanism 5 is located at the first position, the second limiting mechanism 8 is at the maximum opening angle, the bending portion 810 is outside the nail seat 2, and the area of ​​the first plate 800 covered by the matching groove 4 is the smallest in the whole process. When the first limiting mechanism 5 is located at the second position, the second limiting mechanism 8 is at the minimum opening angle, the first limiting mechanism 5 is connected to the first matching piece 210, the second limiting mechanism 8 is connected to the second matching piece 220, and the core rod 3 is relatively fixed to the ball stud 1 and the nail seat 2. Specifically, the protrusion is inserted into the second matching piece 220 on the nail seat 2, and the side of the first plate 800 close to the matching groove 4 is completely located in the matching groove 4.

[0057] Further, the track 9 includes a first track 900 and a second track 910, the first track 900 is arranged close to the matching groove 4, the second track 910 is arranged away from the matching groove 4, the first track 900 is connected to the second track 910, and the connection position is inclined. Preferably, the first track 900 is parallel to the second track 910, and is parallel to the side of the first plate 800 close to the matching groove 4. When the first connecting rod 6 moves on the first track 900 and the second track 910 respectively, it plays a role in fine-tuning the opening angle of the second limiting mechanism 8. When the first connecting rod 6 transitions from the first track 900 to the second track 910, the opening angle of the second limiting mechanism 8 can be quickly adjusted. By setting in parallel, the opening angle of the second limiting mechanism 8 can be evenly changed.

[0058] The moving mechanism includes a fixed sleeve and a rotating member 24 . One end of the fixed sleeve is fixedly connected to the second limiting mechanism 8 , and the other end is threadedly connected to the rotating member 24 . The core rod 3 passes through the fixed sleeve and is fixedly connected to the rotating member 24 .

[0059] like Fig. 9 and Fig.10 As shown, the fixed sleeve includes a middle sleeve 110, and the middle sleeve 110 has a first through space for the core rod 3 to pass through, and the two ends of the core rod 3 are exposed outside the middle sleeve 110. The middle sleeve 110 is fixedly connected to the end of the second limiting mechanism 8 away from the screwdriver head 300. For example, the end of the middle sleeve 110 close to the screwdriver head 300 has a second slit 12 that passes through the third direction, and the second limiting mechanism 8 is inserted in the first slit 10 and the second slit 12, at least partially covering the first plate 800. The middle sleeve 110 is provided with a first through hole 13 on both sides of the second slit 12, and the second limiting mechanism 8 is provided with a second through hole 14, the first through hole 13 and the second through hole 14 are arranged oppositely, and the second connecting rod 15 passes through the first through hole 13 and the second through hole 14, and the second connecting rod 15 is relatively fixed to the middle sleeve 110 by laser welding or the like, so that the middle sleeve 110 is fixedly connected to the end of the second limiting mechanism 8 away from the screwdriver head 300. When the first limiting mechanism 5 is located at the second position, the first plate 800 located in the first gap 10 and the second gap 12 is completely covered.

[0060] The outer wall of the middle sleeve 110 is provided with a third protrusion 16, and the third protrusion 16 is provided with a third track 17 extending along the first direction, and the third track 17 passes through the inner and outer walls of the middle sleeve 110. The core rod 3 is provided with a second opening 18 and a third connecting rod 19, and the second opening 18 is arranged opposite to the third track 17, and the third connecting rod 19 is adapted to the second opening 18, passes through the third track 17 and the second opening 18, and is fixedly connected to the core rod 3 at the second opening 18. When the core rod 3 moves, the third connecting rod 19 is driven to move in the third track 17, and the moving distance of the core rod 3 is limited by limiting the moving distance of the third connecting rod 19.

[0061] like Figure 4As shown, the fixed sleeve includes an outer sleeve 111, and the outer sleeve 111 has a second through-space, and the middle sleeve 110 passes through the second through-space, and the two ends of the core rod 3 are exposed outside the outer sleeve 111. The outer sleeve 111 is relatively fixed to the middle sleeve 110. For example, the outer wall of the middle sleeve 110 is provided with a protrusion 20, and the protrusion 20 is connected to the inner wall of the second through-space close to the limiting mechanism; the end of the second through-space away from the limiting mechanism is provided with a first retaining ring 21, and the inner wall of the outer sleeve 111 is provided with a fourth protrusion 22, and the fourth protrusion 22 and the concave space formed by the third protrusion 16 and the first retaining ring 21 are adapted to limit the relative position of the middle sleeve 110 and the outer sleeve 111. Further, a first retaining ring 23 is provided in the second through-space, and the first retaining ring 23 is located on the side of the first retaining ring 21 away from the limiting mechanism.

[0062] like Fig.13 As shown, the rotating member 24 has a through hole penetrating along a first direction, and one end of the middle sleeve 110 away from the limiting mechanism is in the through hole and is threadedly connected with the rotating member 24. Specifically, a first thread is provided on the inner surface of the through hole, and a second thread 31 is provided on the outer surface of the middle sleeve 110, and the first thread is adapted to the second thread 31. When the rotating member 24 rotates, the rotating member 24 and the middle sleeve 110 generate relative displacement.

[0063] The rotating member 24 is provided with an annular groove, and one end of the outer sleeve 111 away from the limiting mechanism is inserted into the annular groove. When the rotating member 24 rotates, the rotating member 24 moves relative to the outer sleeve 111.

[0064] The core rod 3 passes through the through hole and is fixedly connected to the rotating member 24. For example, the inner wall of the through hole has an annular groove space, and the core rod 3 is provided with a second retaining ring 17, and the second retaining ring 17 is adapted to the annular groove space. When the rotating member 24 and the middle sleeve 110 are relatively displaced, the movement of the annular groove space drives the movement of the second retaining ring 17, so that the core rod 3 moves with the second retaining ring 17.

[0065] Furthermore, if Fig.11 As shown, a second retaining ring 28 is provided inside the second retaining ring 17 , and the second retaining ring 28 is squeezed by the second retaining ring 17 and the core rod 3 , thereby preventing the second blocking member and the core rod 3 from relative displacement, thereby improving the stability of the connection between the rotating member 24 and the core rod 3 .

[0066] Furthermore, a third retaining ring 29 is provided on the core rod 3, and the third retaining ring 29 is located on a side away from the middle sleeve 110, and the outer wall of the third retaining ring 29 is in contact with the inner wall of the through hole. The annular groove-shaped space protrudes away from the outer wall of the middle sleeve 110, and the protruding part of the outer wall is adapted to the groove-shaped space formed between the second retaining ring 17 and the third retaining ring 29 to increase the firmness of the connection between the rotating member 24 and the core rod 3 and improve the stability of the nailer. A third retaining ring 30 is provided inside the third retaining ring 29, and the third retaining ring 30 is squeezed by the third retaining ring 29 and the core rod 3. Through the cooperation of the second retaining ring 17 and the third retaining ring 30, the rotating member 24 and the core rod 3 are more stably fixed relative to each other.

[0067] In another embodiment, a method for using a nail driver for a screwless nail rod system is provided, including using the nail driver for a screwless nail rod system, including: controlling the core rod 3 to drive the first limiting mechanism 5 to move in the direction of the first position, so that the second limiting mechanism 8 opens; connecting the core rod 3 to the ball nail 1, and the first limiting mechanism 5 to the nail seat 2; controlling the core rod 3 to drive the first limiting mechanism 5 to move in the direction of the second position until the second limiting mechanism 8 is connected to the nail seat 2, so that the core rod 3 is relatively fixed with the ball nail 1 and the nail seat 2; rotating the core rod 3 to insert the ball nail 1 into the cone.

[0068] Specifically, the rotating member 24 is rotated in the opposite direction of the limiting mechanism, driving the core rod 3 and the first limiting mechanism 5 on the core rod 3 to move in the direction of the first position, thereby opening the second limiting mechanism 8; aligning the screwdriver head 300 of the core rod 3 with the first groove and installing it to connect the ball head nail 1 and the core rod 3; aligning the second protrusion 510 of the first limiting mechanism 5 with the first matching piece 210 of the nail seat 2 and installing it in the first matching piece 210 to connect the nail seat 2 and the core rod 3; controlling the rotating member 24 to rotate in the direction of the limiting mechanism, driving the core rod 3, the first limiting mechanism 5, the nail seat 2 and the ball head nail 1 to move in the direction of the second position, thereby closing the second limiting mechanism 8 and connecting with the second matching piece 220 on the nail seat 2 to achieve relative fixation of the ball head nail 1, the nail seat 2 and the nailer; rotating the core rod 3 to drive the ball head nail 1 to rotate and be placed in the cone.

[0069] This embodiment provides a nailing device for a screwless nail rod system and a method of use. The relative fixation of the ball nail, the nail seat and the core rod is achieved through the cooperation of the first limiting mechanism and the second limiting mechanism. This fixing method is simple to operate, saves time and effort, and can quickly and stably fix the ball nail on the cone. Through the rotating member and the fixing sleeve, the core rod can move and rotate stably, improving stability.

[0070] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above description is only the specific implementation method of the present application and is not intended to limit the scope of protection of the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A nailing device for a screwless nailing rod system, characterized in that: include: A moving mechanism is detachably connected to the ball stud and the stud seat to be delivered into the body; the moving mechanism includes a core rod, and the core rod extends along a first direction; The ball stud is connected to the stud seat; The limiting mechanism comprises a first limiting mechanism and a second limiting mechanism, wherein the first limiting mechanism is arranged on both sides of the core rod in the second direction, and the first limiting mechanism is relatively fixedly connected to the core rod to follow the movement of the core rod; the second limiting mechanism is arranged on both sides of the core rod in the third direction, and one end of the second limiting mechanism is pivotally connected to the core rod so as to be relatively movable, and the other end is detachably connected to the nail seat; The second limiting mechanism has a track that runs through the second direction, and the first limiting mechanism is provided with a first connecting rod, which passes through the track and is connected to the first limiting mechanism that is relatively arranged; the first limiting mechanism drives the first connecting rod to move between the first position and the second position in the track to drive the second limiting mechanism to move closer to or away from the direction of the core rod, thereby changing the opening angle of the second limiting mechanism; when the first limiting mechanism is in the first position, the second limiting mechanism is at the maximum opening angle; when the first limiting mechanism is in the second position, the second limiting mechanism is at the minimum opening angle, and the core rod is relatively fixed to the ball stud and the nail seat.

2. A nailing device for a screwless nailing rod system according to claim 1, characterized in that: The moving mechanism includes a fixed sleeve and a rotating member; One end of the fixed sleeve is fixedly connected to the second limiting mechanism, and the other end is threadedly connected to the rotating member; the core rod passes through the fixed sleeve and is fixedly connected to the rotating member.

3. A nailing device for a screwless nailing rod system according to claim 2, characterized in that: The core rod is provided with a matching groove; The first limiting mechanism includes a first protrusion, which extends from the inner wall of the matching groove to a direction away from the bottom of the matching groove; One end portion of the second limiting mechanism is located in the matching groove. When the core rod moves, the matching groove is driven to move, so that the second limiting mechanism and the matching groove are relatively displaced.

4. A nailing device for a screwless nailing rod system according to claim 1, characterized in that: The first limiting mechanism includes a second protrusion, the second protrusion is arranged at the end of the core rod connected to the nail seat, and the two second protrusions are symmetrically arranged in the second direction; The nail seat has a first matching piece, and the second protrusion is matched with the first matching piece.

5. The nailing device for a screwless nailing rod system according to claim 3, characterized in that: The second limiting mechanism includes a first plate and a bent portion, wherein the first plate is disposed above the matching groove, has the same extension direction as the matching groove, and is at least partially located in the matching groove; The bending portion is arranged at the end of the first plate close to the nail seat, and the bending portion has a convex block, and the convex block is arranged toward the nail seat; The nail seat has a second matching piece, and the protrusion is matched with the second matching piece.

6. A nailing device for a screwless nailing rod system according to claim 3, characterized in that: The track has an extension component in a direction away from the matching groove and an extension component opposite to the extension direction of the core rod; the track includes a first track and a second track, the first track is arranged close to the matching groove, the second track is arranged away from the matching groove, the first track is connected to the second track, and the connection position is inclined.

7. A nailing device for a screwless nailing rod system according to claim 3, characterized in that: The fixing sleeve includes a middle sleeve, the middle sleeve has a first through space for the core rod to pass through, and both ends of the core rod are exposed outside the middle sleeve; The middle sleeve has a second gap extending through the third direction at one end close to the nail seat, and the second gap is opposite to the matching groove; the second limiting mechanism is partially inserted in the second gap and the matching groove; The second limiting mechanism is provided with a second connecting rod, which passes through the second limiting mechanism and is fixedly connected to the middle sleeve.

8. A nailing device for a screwless nailing rod system according to claim 7, characterized in that: The outer wall of the middle sleeve is provided with a third protrusion, and the third protrusion is provided with a third track extending along the first direction, and the third track runs through the inner and outer walls of the middle sleeve; The core rod is provided with a second opening and a third connecting rod, the second opening is arranged opposite to the third track, the third connecting rod passes through the third track and the second opening, and is fixedly connected to the core rod at the second opening.

9. The nailing device for a screwless nailing rod system according to claim 7, characterized in that: The rotating member has a through hole penetrating along a first direction, and one end of the middle sleeve away from the limiting mechanism is located in the through hole and is threadedly connected to the rotating member; The inner wall of the through hole is protrudingly provided with a first blocking member and a second blocking member surrounding the core rod, the first blocking member is connected to the middle sleeve, and the second blocking member is in contact with the core rod; there is a recessed space between the first blocking member and the second blocking member; a second blocking ring is provided on the core rod, the second blocking ring is adapted to the recessed space, and the second blocking ring is installed in the recessed space.

10. A method for using a nailing device for a screwless nail bar system, using the nailing device for a screwless nail bar system according to any one of claims 1 to 9, characterized in that: include: The control core rod drives the first limiting mechanism to move toward the direction of the first position, so that the second limiting mechanism opens; Connect the core rod to the ball stud, and connect the first limiting mechanism to the nail seat; control the core rod to drive the first limiting mechanism to move in the direction of the second position until the second limiting mechanism is connected to the nail seat, so that the core rod, the ball stud and the nail seat are relatively fixed; Rotate the mandrel to insert the ball stud into the cone.

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