A rod locking handle

Abstract

The embodiment of the present application provides a rod locking handle, wherein the rod locking handle has a locking state and an unlocking state which can be converted to each other, the rod locking handle comprises an outer sleeve and an inner sleeve, the outer sleeve has a containing cavity and an insertion hole for a rod to pass in, the inner sleeve is rotatably arranged in the containing cavity along a central axis, a hole wall of the containing cavity comprises a butting area and a containing area which are arranged in sequence along a circumference of the containing cavity, a distance between the butting area and the central axis is a, a distance between the containing area and the central axis is b, a is smaller than b; the inner sleeve has a clamping part for clamping the rod, in the locking state, the inner sleeve butts against the butting area and can clamp the rod, in the unlocking state, the inner sleeve corresponds to the containing area in a radial direction of the containing cavity and can unlock the rod. Therefore, the rod locking handle of the embodiment of the present application has the advantages of simple structure and convenient operation.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a rod-shaped locking handle. Background Technology

[0002] Medical rod locking handles are primarily used in medical devices. Their main function is to provide a reliable mechanism for fixing and adjusting the position of medical devices or their components, ensuring that the devices or components remain securely in the desired position after adjustment, preventing unnecessary movement. These handles are typically used in applications requiring precise control and stability. Currently, most rod locking handles can only lock single-size products. While a few can lock multi-size rod-shaped products, they are bulky, have complex internal structures, and significantly increase manufacturing costs. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention provide a rod-locking handle. This rod-locking handle has the advantages of simple structure and convenient operation.

[0004] The rod locking handle of this invention includes an outer sleeve and an inner sleeve. The outer sleeve has a receiving cavity and an insertion hole for the rod to pass through. The inner sleeve is rotatably disposed in the receiving cavity along its central axis. The wall of the receiving cavity includes an abutment area and a receiving area arranged sequentially along the circumference of the receiving cavity. The distance between the abutment area and the central axis is 'a', and the distance between the receiving area and the central axis is 'b', where 'a' is less than 'b'. The inner sleeve has a clamping part for clamping the rod. In the locked state, the inner sleeve abuts against the abutment area to clamp the rod. In the unlocked state, the inner sleeve and the receiving area correspond radially in the receiving cavity to unlock the rod.

[0005] The rod locking handle of this invention divides the wall of the receiving cavity into an abutment area and a receiving area arranged sequentially along the circumference of the receiving cavity, and controls the different distances between the receiving area and the abutment area and the central axis of the inner sleeve. This allows for clamping and unlocking of the rod when the inner sleeve is rotated. Therefore, this rod locking handle has a simple structure and is easy to operate.

[0006] Therefore, the rod locking handle of the present invention has the advantages of simple structure and convenient operation.

[0007] In some embodiments, the outer sleeve includes an outer sleeve body and a plug body. The outer sleeve body has an opening communicating with the receiving cavity. The plug body is detachably disposed on the opening. The inner wall surface of the outer sleeve body has the abutment area and the receiving area. The plug body is provided with the insertion hole. The inner sleeve is confined within the receiving cavity by the plug body.

[0008] In some embodiments, the inner sleeve is made of polytetrafluoroethylene.

[0009] In some embodiments, the receiving cavity of the outer sleeve is divided into a blocking cavity segment and a mating cavity segment along the extension direction of the central axis, and the projection of the inner contour of the mating cavity segment falls within the projection of the inner contour of the blocking cavity segment. The plug is sealed in the blocking cavity segment, the clamping part is disposed in the mating cavity segment, and the abutment area and the receiving area are formed on the inner wall surface of the mating cavity segment.

[0010] In some embodiments, the cross-section of the mating cavity section decreases from the bottom of the cavity to the insertion hole, and the distance from the outer wall surface of the clamping portion of the inner sleeve to the central axis decreases from the bottom of the cavity to the insertion hole. In the locked state, the outer wall surface of the clamping portion of the inner sleeve can abut against the abutting area of ​​the mating cavity section.

[0011] In other embodiments, the mating cavity section includes a second segment and a first segment arranged coaxially from the bottom of the cavity to the insertion hole, and the cross-section of the first segment is larger than the cross-section of the second segment to form a stepped surface between the first segment and the second segment. The distance from the outer contour of the clamping part of the inner sleeve to the central axis increases from the bottom of the cavity to the insertion hole. In the locked state, the outer wall surface of the clamping part of the inner sleeve can abut against the abutting area of ​​the first segment and / or the second segment.

[0012] In some embodiments, the cross-section of the mating cavity segment is polygonal, the included angle of each mating cavity segment forms the receiving area, and the edge of each mating cavity segment forms the abutment area.

[0013] In some embodiments, the cross-section of the insertion hole is smaller than the cross-section of the receiving cavity, a step is formed between the insertion hole and the receiving cavity, and one end of the inner sleeve abuts against the plug.

[0014] In other embodiments, the inner wall surface of the insertion hole is provided with a limiting protrusion extending toward the hole, and the projection of the limiting protrusion coincides with the projection of the inner sleeve along the extension direction of the central axis, and one end of the inner sleeve abuts against the limiting protrusion.

[0015] In some embodiments, the plug includes a cover portion and a plug portion formed on one side of the cover portion, the plug portion extending along the thickness direction of the cover portion, the cover portion abutting against one end of the outer sleeve having the opening, the plug portion being detachably connected to the wall of the receiving cavity, and the insertion hole being formed on the cover portion and the plug portion.

[0016] In some embodiments, the inner sleeve includes an inner sleeve body and a limiting pin. The inner sleeve body is provided with a slot, and a section of the inner sleeve body having the slot forms the clamping portion. The limiting pin is rotatably engaged in the slot, and a portion of the limiting pin protrudes radially from the inner sleeve body. The clamping portion is formed on the inner sleeve body. The limiting pin is switchably engaged with the abutment area and the receiving area to allow the rod locking handle to change between the locked state and the unlocked state.

[0017] In some embodiments, the inner sleeve includes a sleeve and a plurality of spaced-apart claws disposed at one end of the sleeve, the area between the plurality of claws forms the clamping portion, the groove is formed between two adjacent claws, and the limiting pin is movably engaged in the groove along the radial direction of the inner sleeve.

[0018] In some embodiments, the receiving cavity of the outer sleeve has a mating cavity section that decreases in the direction from the bottom of the cavity to the insertion hole, and the cross-section of the inner sleeve increases in the direction from the bottom of the cavity to the insertion hole along the extension direction of the central axis, while the cross-section of the limiting pin decreases in the direction from the bottom of the cavity to the insertion hole.

[0019] In other embodiments, the receiving cavity of the outer sleeve has a mating cavity segment, the mating cavity segment including a first segment and a second segment arranged coaxially, the inner sleeve body including a first sleeve segment and a second sleeve segment, the first sleeve segment and the second sleeve segment having the claw, the cross-section of the first segment being larger than the cross-section of the second segment, the cross-section of the first sleeve segment being larger than the cross-section of the second sleeve segment, the limiting pin including a separately arranged first pin and a second pin, the first pin being engaged in the slot of the first sleeve segment, and the second pin being engaged in the slot of the second sleeve segment.

[0020] In some embodiments, the contact area and the receiving area are smoothly provided with anti-slip walls, and the distance between the anti-slip walls and the central axis is c, where b > c > a.

[0021] In other embodiments, the contact area and the receiving area are smoothly connected. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of the rod locking handle and the rod body in accordance with an embodiment of the present invention;

[0023] Figure 2 This is a cross-sectional view of the rod locking handle according to an embodiment of the present invention;

[0024] Figure 3 This is a perspective view of the outer shell according to an embodiment of the present invention;

[0025] Figure 4This is a cross-sectional view of the outer casing according to an embodiment of the present invention;

[0026] Figure 5 This is a top view of the outer casing according to an embodiment of the present invention;

[0027] Figure 6 This is a perspective view of the inner sleeve according to an embodiment of the present invention;

[0028] Figure 7 This is a perspective view of the inner sleeve body according to an embodiment of the present invention;

[0029] Figure 8 This is a front view of the inner sleeve according to an embodiment of the present invention;

[0030] Figure 9 This is a top view of the inner sleeve body according to an embodiment of the present invention;

[0031] Figure 10 This is a front view of a limiting pin according to an embodiment of the present invention;

[0032] Figure 11 This is a cross-sectional view of the rod locking handle and the rod body in another embodiment of the present invention;

[0033] Figure 12 This is a cross-sectional view of the rod locking handle according to another embodiment of the present invention;

[0034] Figure 13 This is a perspective view of the outer casing according to another embodiment of the present invention;

[0035] Figure 14 This is a cross-sectional view of the outer casing according to another embodiment of the present invention;

[0036] Figure 15 This is a top view of the outer casing according to another embodiment of the present invention;

[0037] Figure 16 This is a perspective view of the plug body according to another embodiment of the present invention;

[0038] Figure 17 This is a perspective view of the inner sleeve according to another embodiment of the present invention;

[0039] Figure 18 This is a perspective view of the inner sleeve body according to another embodiment of the present invention;

[0040] Figure 19 This is a front view of the inner sleeve according to another embodiment of the present invention;

[0041] Figure 20 This is a top view of the inner sleeve body according to another embodiment of the present invention;

[0042] Figure 21This is a front view of a limiting pin according to another embodiment of the present invention.

[0043] Figure label:

[0044] Rod locking handle 100; Rod 200;

[0045] Outer shell 1; Outer shell body 11; Receiving cavity 111; Contact area 112; Containment area 113; Sealing cavity segment 114; Matching cavity segment 115; First segment 1151; Second segment 1152;

[0046] Plug body 12; Cover body 121; Plug body 122; Insertion hole 123;

[0047] Inner sleeve 2; Inner sleeve body 21; Slot 211; Claw 212; Limit pin 22. Detailed Implementation

[0048] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0049] Example 1:

[0050] The following is for reference. Figures 1-10 The rod locking handle 100 of Embodiment 1 of the present invention is described. The rod locking handle 100 has a lockable state and an unlocked state that can be switched between each other.

[0051] like Figures 1-10 As shown, the rod locking handle 100 of Embodiment 1 of the present invention includes an outer sleeve 1 and an inner sleeve 2. The outer sleeve 1 has a receiving cavity 111 and an insertion hole 123 for the rod 200 to pass through. The inner sleeve 2 is rotatably disposed in the receiving cavity 111 along its central axis. The hole wall of the receiving cavity 111 includes an abutment area 112 and a receiving area 113 arranged sequentially along the circumference of the receiving cavity 111. The distance between the abutment area 112 and the central axis is a, and the distance between the receiving area 113 and the central axis is b, where a is less than b. The inner sleeve 2 has a clamping part for clamping the rod 200. In the locked state, the inner sleeve 2 abuts against the abutment area 112 and can clamp the rod 200. In the unlocked state, the inner sleeve 2 and the receiving area 113 correspond to each other radially in the receiving cavity 111 and can unlock the rod 200.

[0052] The rod locking handle 100 of Embodiment 1 of the present invention divides the wall of the receiving cavity 111 into an abutment area 112 and a receiving area 113 arranged sequentially along the circumference of the receiving cavity 111, and controls the different distances between the receiving area 113 and the abutment area 112 and the central axis of the inner sleeve 2. This allows for clamping and unlocking of the rod 200 when the inner sleeve 2 is rotated. Therefore, the rod locking handle 100 of this structure is simple in structure and easy to operate.

[0053] Therefore, the rod locking handle 100 of Embodiment 1 of the present invention has the advantages of simple structure and convenient operation.

[0054] like Figures 1 to 4 As shown, the outer sleeve 1 includes an outer sleeve body 11 and a plug body 12. The outer sleeve body 11 has an opening communicating with the receiving cavity 111. The plug body 12 is detachably disposed on the opening. The inner wall surface of the outer sleeve body 11 has an abutment area 112 and a receiving area 113. The plug body 12 is provided with an insertion hole 123. The inner sleeve 2 is confined within the receiving cavity 111 by the plug body 12.

[0055] The rod-locking handle 100 of Embodiment 1 of the present invention is constructed by dividing the outer casing 1 into an outer casing 11 and a plug 12, with the plug 12 detachably disposed on the opening of the outer casing 11. During assembly, the inner sleeve 2 can be placed into the receiving cavity 111 through the opening, and then the plug 12 can be used to confine the inner sleeve 2 within the receiving cavity 111. In use, the rod 200 is inserted into the clamping part of the inner sleeve 2 for fixation. The inner sleeve 2 can be rotated from the receiving area 113 to the abutment area 112 by rotating the rod 200. This further improves the ease of installation. Furthermore, because the plug 12 is detachably disposed on the opening of the outer casing 11, it facilitates thorough disinfection of the outer casing 1 and the inner sleeve 2.

[0056] Alternatively, the inner sleeve 2 can be made of polytetrafluoroethylene (PTFE). This material is relatively soft, allowing for a soft contact with the outer sleeve 1 and reducing the likelihood of wear on the outer sleeve 1 during use. This helps to extend the service life of the locking handle 100.

[0057] like Figures 1 to 4 As shown, the receiving cavity 111 of the outer casing 11 is divided into a blocking cavity section 114 and a mating cavity section 115 along the extension direction of the central axis, and the projection of the inner contour of the mating cavity section 115 falls within the projection of the inner contour of the blocking cavity section 114 along the extension direction of the central axis. The plug 12 is sealed in the blocking cavity section 114, and the clamping part is disposed in the mating cavity section 115. The abutment area 112 and the receiving area 113 are formed on the inner wall surface of the mating cavity section 115. It can be understood that the cavity diameter of the mating cavity section 115 is less than or equal to that of the blocking cavity section 114.

[0058] The rod locking handle 100 of Embodiment 1 of the present invention divides the receiving cavity 111 of the outer sleeve 11 into a sealing cavity section 114 and a mating cavity section 115, and the projection of the inner contour of the mating cavity section 115 falls within the projection of the inner contour of the sealing cavity section 114, so that the inner sleeve 2 can be smoothly installed into the mating cavity section 115 to achieve the installation of the inner sleeve 2. Therefore, the rod locking handle 100 has the advantage of convenient installation. At the same time, it avoids the problem of the overall size of the locking handle being too large due to the excessive volume of the mating cavity section 115.

[0059] Optionally, the opening formed on the sealing cavity 114 is approximately circular, and the plug body 12 is also approximately circular, forming a sealing plate structure.

[0060] like Figure 1 and Figure 2 As shown, the cross-section of the insertion hole 123 is smaller than the cross-section of the receiving cavity 111, and a step is formed between the insertion hole 123 and the receiving cavity 111. One end of the inner sleeve 2 abuts against the plug body 12. That is to say, the inner sleeve 2 is limited by the plug body 12.

[0061] In Embodiment 1 of the present invention, the rod locking handle 100 forms a step between the insertion hole 123 and the receiving cavity 111, and one end of the inner sleeve 2 abuts against the plug body 12, thereby limiting the inner sleeve 2 and preventing the inner sleeve 2 from coming out of the receiving cavity 111.

[0062] Embodiment 1 of the present invention is not limited to this. For example, in other embodiments, a limiting protrusion extending toward the inside of the insertion hole 123 is provided on the inner wall surface. Along the extension direction of the central axis, the projection of the limiting protrusion coincides with the projection of the inner sleeve 2, and one end of the inner sleeve 2 abuts against the limiting protrusion. Similarly, the inner sleeve 2 can be limited by the limiting protrusion. This structure has the advantage of reducing material and weight compared to the solid ring plate structure.

[0063] like Figure 1 and Figure 2 As shown, the plug 12 includes a cover portion 121 and a plug portion 122 formed on one side of the cover portion 121. The plug portion 122 extends along the thickness direction of the cover portion 121. The cover portion 121 abuts against the open end of the outer sleeve 11. The plug portion 122 is detachably connected to the wall of the receiving cavity 111. An insertion hole 123 is formed on the cover portion 121 and the plug portion 122.

[0064] The rod locking handle 100 of Embodiment 1 of the present invention divides the plug body 12 into a cover part 121 and a plug part 122 formed on one side of the cover part 121. The outer wall surface of each of the plug part 122 and the cover part 121 can form a connecting surface with the outer sleeve 11, thus ensuring the stability of the connection.

[0065] Optionally, the outer circumferential surface of the plug portion 122 may be provided with external threads, and the portion of the receiving cavity 111 that mates with the plug portion 122 may be provided with internal threads, thus the plug portion 122 and the outer sleeve 11 are threadedly engaged. Furthermore, the plug portion 122 is threadedly engaged with the sealing cavity section 114. To further enhance the robustness of the fit between the plug portion 121 and the outer sleeve 11, the ends of the cover portion 121 and the outer sleeve 11 may be welded or bonded together.

[0066] like Figures 1 to 4 As shown, the cross-section of the mating cavity 115 decreases from the bottom of the cavity to the insertion hole 123, and the distance from the outer wall surface of the clamping part of the inner sleeve 2 to the central axis decreases from the bottom of the cavity to the insertion hole 123. In the locked state, the outer wall surface of the clamping part of the inner sleeve 2 can abut against the abutting area 112 of the mating cavity 115.

[0067] The rod locking handle 100 of Embodiment 1 of the present invention reduces the cross-section of the mating cavity 115 from the bottom of the cavity to the insertion hole 123, and reduces the distance from the outer wall surface of the clamping part of the inner sleeve 2 to the central axis from the bottom of the cavity to the insertion hole 123, thereby ensuring a surface-to-surface fit between the inner sleeve 2 and the wall surface of the mating cavity 115. Therefore, the rod locking handle 100 of Embodiment 1 of the present invention has the advantage of good structural stability.

[0068] like Figure 3 and Figure 5 As shown, the cross-section of the mating cavity 115 is polygonal, the included corner of each mating cavity 115 forms a receiving area 113, and the edge of each mating cavity 115 forms an abutment area 112.

[0069] The rod locking handle 100 of Embodiment 1 of the present invention has the advantages of simple structure and good stability by setting the cross-section of the mating cavity 115 as a polygon, forming a receiving area 113 at the included angle of the mating cavity 115, and forming an abutment area 112 at the edge of each mating cavity 115.

[0070] Optionally, the cross-section of the mating cavity 115 can be approximately triangular, quadrilateral, or pentagonal, and thus the abutment area 112 and the receiving area 113 can also be multiple. For example, the cross-section of the mating cavity 115 can be approximately triangular, and the abutment area 112 and the receiving area 113 are correspondingly set to three. Setting multiple abutment areas 112 can abut with multiple points of the inner sleeve 2, thereby further improving the structural robustness.

[0071] like Figures 6 to 8As shown, the inner sleeve 2 includes an inner sleeve body 21 and a limiting pin 22. The inner sleeve body 21 is provided with a slot 211. A section of the inner sleeve body 21 with the slot 211 forms a clamping part. The limiting pin 22 is rotatably locked in the slot 211, and a part of the limiting pin 22 protrudes radially out of the inner sleeve body 21. The clamping part is formed on the inner sleeve body 21. The limiting pin 22 can switchably abut against the abutment area 112 and the receiving area 113 so that the rod locking handle 100 can switch between a locked state and an unlocked state.

[0072] The rod locking handle 100 of Embodiment 1 of the present invention divides the inner sleeve 2 into an inner sleeve body 21 and a limiting pin 22. The limiting pin 22 is rotatably engaged in a slot 211, and a portion of the limiting pin 22 protrudes radially out of the inner sleeve body 21. Thus, in the locked state, the inner sleeve 2 abuts against the abutment area 112, thereby locking the rod 200. Furthermore, the relatively sliding cooperation during the transition between the locked and unlocked states of the rod locking handle 100 improves the smoothness of the transition and avoids the problem of jamming during the rotation of the inner sleeve 2.

[0073] Optionally, the number of limit pins 22 can be matched with the number of abutment zones 112 and containment zones 113.

[0074] like Figures 6 to 8 As shown, the inner sleeve 21 includes a sleeve and a plurality of spaced-apart claws 212 disposed at one end of the sleeve. The area between the plurality of claws 212 forms a clamping part, and a groove 211 is formed between two adjacent claws 212. The limiting pin 22 is movably engaged in the groove 211 along the radial direction of the inner sleeve 2.

[0075] The rod-locking handle 100 of Embodiment 1 of the present invention divides the inner sleeve 21 into a sleeve and a plurality of spaced-apart claws 212 disposed at one end of the sleeve. A groove 211 for placing a limiting pin 22 is formed between two adjacent claws 212. Therefore, the rod-locking handle 100 of Embodiment 1 of the present invention has the advantages of simple structure and high processing convenience. In use, the rod 200 (rod-shaped workpiece) is inserted into the inner sleeve 21, and the workpiece is rotated. The limiting pin 22 will also move accordingly, causing the inner sleeve 21 to rotate. During the process of rotating from the receiving area 113 to the abutment area 112, the limiting pin 22 will be squeezed by the hole wall of the receiving cavity 111 and move radially thereafter. The limiting pin 22 will also squeeze the workpiece, thereby locking the rod-shaped workpiece.

[0076] Furthermore, the chuck 212 can be formed by welding or by directly creating a notch (chuck groove 211) at one end of the sleeve.

[0077] like Figures 1 to 4As shown, the receiving cavity 111 of the outer sleeve 1 has a mating cavity section 115 that decreases in the direction from the bottom of the cavity to the insertion hole 123. Along the extension direction of the central axis, the cross section of the inner sleeve 21 increases in the direction from the bottom of the cavity to the insertion hole 123, and the cross section of the limiting pin 22 decreases in the direction from the bottom of the cavity to the insertion hole 123.

[0078] The rod-locking handle 100 of Embodiment 1 of the present invention increases the cross-section of the inner sleeve 21 from the bottom of the cavity to the insertion hole 123, making it suitable for inserting rod-shaped workpieces of different diameters. Because the diameters of the rod-shaped workpieces are different, the insertion depths into the inner sleeve 21 are also different. Therefore, this locking handle can lock rod-shaped workpieces of multiple specifications (diameters), thereby improving the applicability of the locking handle.

[0079] Furthermore, the receiving cavity 111 of the outer sleeve 1 has a mating cavity section 115 that decreases in size from the bottom of the cavity to the insertion hole 123, and the cross-section of the limiting pin 22 decreases in size from the bottom of the cavity to the insertion hole 123. This increases the contact area between the limiting pin 22 and the outer sleeve 1, thereby improving the stability of the locking mechanism.

[0080] Optionally, the contact area 112 and the receiving area 113 are smoothly provided with anti-slip walls, and the distance between the anti-slip wall and the central axis is c, where b > c > a. Thus, the anti-slip wall can limit the inner sleeve 2 to a certain extent, avoiding the problem that the inner sleeve 2 and the receiving area 113 are difficult to maintain and are prone to deviation when the inner sleeve 2 is not under force due to the smoothness of the wall surface, thereby improving the stability of the structure.

[0081] Embodiment 1 of the present invention is not limited thereto. For example, in other embodiments, the contact area 112 and the receiving area 113 are smoothly connected. This improves the smoothness of the transition.

[0082] Example 2:

[0083] The following is for reference. Figure 11 and Figure 21 As shown, a rod locking handle 100 is described in another specific embodiment 2 of the present invention.

[0084] like Figures 13 to 14As shown, in the rod locking handle 100 of Embodiment 2 of the present invention, the mating cavity 115 includes a second segment 1152 and a first segment 1151 coaxially arranged from the bottom of the cavity to the insertion hole 123. The cross-section of the first segment 1151 is larger than the cross-section of the second segment 1152, so as to form a stepped surface between the first segment 1151 and the second segment 1152. The distance from the outer contour of the clamping part of the inner sleeve 2 to the central axis increases from the bottom of the cavity to the insertion hole 123. In the locked state, the outer wall surface of the clamping part of the inner sleeve 2 can abut against the abutment area 112 of the first segment 1151 and / or the second segment 1152. It can be understood that the clamping part can abut against at least one of the first segment 1151 and the second segment 1152 depending on the depth to which the rod 200 is inserted into the inner sleeve 2. If the diameter of the rod 200 is relatively large, the clamping part of the inner sleeve 2 can only abut against the first segment 1151; if the diameter of the rod 200 is relatively small, the clamping part of the inner sleeve 2 can only abut against the second segment 1152; moreover, if the rod 200 is divided into segments of different diameters, it is also possible to make the clamping part abut against both the first segment 1151 and the second segment 1152.

[0085] The rod locking handle 100 of Embodiment 2 of the present invention is divided into a second segment 1152 and a first segment 1151 arranged coaxially from the bottom of the cavity to the insertion hole 123 in the direction of the mating cavity 115. It is suitable for inserting rod-shaped workpieces of different diameters. The diameter of the rod-shaped products is different and the steps inserted into the inner sleeve 2 are different. Therefore, the locking structure can lock rod-shaped products of multiple specifications (diameters).

[0086] Furthermore, in Embodiment 2 of the present invention, the mating cavity 115 of the outer sleeve 11 in the rod locking handle 100 is not limited to having a first segment 1151 and a second segment 1152. The number of inner sleeve 2 steps is increased accordingly based on the specifications and quantity of the locking rod.

[0087] Furthermore, the cross-sections of the second segment 1152 and the first segment 1151 can both be polygonal, and the included angle portion of the second segment 1152 and the included angle portion of the first segment 1151 are provided in a one-to-one correspondence, and the edges of the second segment 1152 and the edges of the first segment 1151 are provided in a one-to-one correspondence.

[0088] like Figures 17 to 19As shown, the receiving cavity 111 of the outer sleeve 1 has a mating cavity section 115. The mating cavity section 115 includes a first segment 1151 and a second segment 1152 arranged coaxially. The inner sleeve 21 includes a first sleeve section and a second sleeve section. The first sleeve section and the second sleeve section have claws 212. The cross-section of the first segment 1151 is larger than the cross-section of the second segment 1152. The cross-section of the first sleeve section is larger than the cross-section of the second sleeve section. The limiting pin 22 includes a first pin and a second pin that are separately arranged. The first pin is engaged in the slot 211 of the first sleeve section, and the second pin is engaged in the slot 211 of the second sleeve section.

[0089] The rod locking handle 100 of Embodiment 2 of the present invention, by dividing the limiting pin 22 into a first pin and a second pin that are separately set, can cooperate with the stepped setting of the mating cavity 115, thereby realizing the locking of rods of different diameters.

[0090] Figures 11 to 21 The illustrated embodiment 2 of the present invention, and Figures 1 to 10 The remaining aspects of the illustrated embodiment 1 are the same and will not be repeated here.

[0091] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0092] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0093] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0094] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0095] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0096] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A rod-body locking handle, characterized in that, The rod locking handle has a lockable and unlocked state that can be switched between each other. The rod locking handle includes an outer sleeve and an inner sleeve. The outer sleeve has a receiving cavity and an insertion hole for the rod to pass through. The inner sleeve is rotatably disposed in the receiving cavity along its central axis. The wall of the receiving cavity includes an abutment area and a receiving area arranged sequentially along the circumference of the receiving cavity. The distance between the abutment area and the central axis is 'a', and the distance between the receiving area and the central axis is 'b', where 'a' is less than 'b'. The inner sleeve has a clamping part for clamping the rod. In the locked state, the inner sleeve abuts against the abutment area to clamp the rod. In the unlocked state, the inner sleeve and the receiving area correspond radially in the receiving cavity to unlock the rod. The inner sleeve includes an inner sleeve body and a limiting pin. The inner sleeve body is provided with a slot. A section of the inner sleeve body with the slot forms the clamping part. The limiting pin is rotatably engaged in the slot, and a portion of the limiting pin protrudes radially from the inner sleeve body. The clamping part is formed on the inner sleeve body. The limiting pin is switchably engaged with the abutment area and the receiving area to allow the rod locking handle to switch between the locked state and the unlocked state.

2. The rod locking handle according to claim 1, characterized in that, The outer sleeve includes an outer sleeve body and a plug body. The outer sleeve body has an opening communicating with the receiving cavity. The plug body is detachably disposed on the opening. The inner wall surface of the outer sleeve body has the abutment area and the receiving area. The plug body is provided with the insertion hole. The inner sleeve is confined within the receiving cavity by the plug body. And / or, the inner sleeve is made of polytetrafluoroethylene.

3. The rod locking handle according to claim 2, characterized in that, The receiving cavity of the outer casing is divided into a blocking cavity section and a mating cavity section along the extension direction of the central axis, and the projection of the inner contour of the mating cavity section falls into the projection of the inner contour of the blocking cavity section. The plug is sealed in the blocking cavity section, the clamping part is disposed in the mating cavity section, and the abutting area and the receiving area are formed on the inner wall surface of the mating cavity section.

4. The rod locking handle according to claim 3, characterized in that, The cross-section of the mating cavity section decreases from the bottom of the cavity to the insertion hole, and the distance from the outer wall surface of the clamping part of the inner sleeve to the central axis decreases from the bottom of the cavity to the insertion hole. In the locked state, the outer wall surface of the clamping part of the inner sleeve can abut against the abutting area of ​​the mating cavity section. Alternatively, the mating cavity section may sequentially include a second segment and a first segment arranged coaxially from the cavity bottom to the insertion hole, and the cross-section of the first segment is larger than the cross-section of the second segment to form a stepped surface between the first segment and the second segment. The distance between the outer contour of the inner sleeve's clamping part and the central axis increases from the cavity bottom to the insertion hole. In the locked state, the outer wall surface of the inner sleeve's clamping part can abut against the abutting area of ​​the first segment and / or the second segment.

5. The rod locking handle according to claim 3, characterized in that, The cross-section of each mating cavity segment is polygonal, the included angle of each mating cavity segment forms the receiving area, and the edge of each mating cavity segment forms the abutment area.

6. The rod locking handle according to claim 2, characterized in that, The cross-section of the insertion hole is smaller than the cross-section of the receiving cavity, a step is formed between the insertion hole and the receiving cavity, and one end of the inner sleeve abuts against the plug body; Alternatively, a limiting protrusion extending toward the inside of the insertion hole is provided on the inner wall surface of the insertion hole. Along the extension direction of the central axis, the projection of the limiting protrusion coincides with the projection of the inner sleeve, and one end of the inner sleeve abuts against the limiting protrusion.

7. The rod locking handle according to claim 6, characterized in that, The plug includes a cover portion and a plug portion formed on one side of the cover portion. The plug portion extends along the thickness direction of the cover portion. The cover portion abuts against the end of the outer sleeve having the opening. The plug portion is detachably connected to the wall of the receiving cavity. The insertion hole is formed on the cover portion and the plug portion.

8. The rod locking handle according to claim 1, characterized in that, The inner sleeve includes a sleeve and a plurality of spaced-apart claws disposed at one end of the sleeve. The area between the plurality of claws forms the clamping part, and the groove is formed between two adjacent claws. The limiting pin is movably engaged in the groove along the radial direction of the inner sleeve.

9. The rod locking handle according to claim 8, characterized in that, The outer sleeve has a receiving cavity with a mating cavity section that decreases in the direction from the bottom of the cavity to the insertion hole. Along the extension direction of the central axis, the cross-section of the inner sleeve increases in the direction from the bottom of the cavity to the insertion hole, and the cross-section of the limiting pin decreases in the direction from the bottom of the cavity to the insertion hole. Alternatively, the outer sleeve's receiving cavity has a mating section, the mating section comprising a first segment and a second segment coaxially arranged, the inner sleeve comprising a first sleeve segment and a second sleeve segment, the first sleeve segment and the second sleeve segment having the locking claw, the cross-section of the first segment being larger than the cross-section of the second segment, the cross-section of the first sleeve segment being larger than the cross-section of the second sleeve segment, the limiting pin comprising a separately arranged first pin and a second pin, the first pin being engaged in the locking groove of the first sleeve segment, and the second pin being engaged in the locking groove of the second sleeve segment.

10. The rod locking handle according to any one of claims 1-9, characterized in that, The contact area and the receiving area are smoothly provided with anti-slip walls, and the distance between the anti-slip walls and the central axis is c, where b > c > a; Alternatively, the contact area and the containment area may be smoothly connected.

Images