Saw blade locking device and reciprocating saw

Abstract

The utility model discloses a saw blade locking device and a reciprocating saw, the saw blade locking device comprises a connecting seat, one end of the connecting seat is provided with an opening for inserting a saw blade, and the opening is provided with a first clamping part; the locking piece is arranged in the connecting seat and can move relative to the radial direction of the connecting seat; the elastic piece is connected between the locking piece and the connecting base in an abutting mode; the pressing assembly is arranged on the connecting base and can move relative to the connecting base, and the pressing assembly is connected with the locking piece; pressure is applied to the locking piece through the pressing assembly, and the locking piece moves in the radial direction of the connecting base under the action of the elastic piece so that the first clamping part can be close to the clamping structure to lock the saw blade, or the first clamping part can be separated from the clamping structure to release the saw blade. According to the technical scheme, the universality of the saw blade locking device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a saw blade locking device and a reciprocating saw. Background Art

[0002] The medical reciprocating saw is a common medical device, which is widely used in orthopedic surgeries. It cuts hard tissues such as bones by the reciprocating movement of the saw blade, thus facilitating the doctor's surgical treatment.

[0003] The medical reciprocating saw generally includes a saw blade and a driving mechanism. The driving mechanism directly drives the saw blade to perform reciprocating motion. Some reciprocating saws are also provided with a saw blade locking device connecting the saw blade and the driving mechanism, and the saw blade is detachably connected to the driving mechanism through the saw blade locking device.

[0004] However, such a saw blade locking device cannot be applicable to saw blades of various thicknesses, and it is impossible to install saw blades of different thicknesses on the same driving mechanism through the same saw blade locking device, so the versatility of the saw blade locking device is poor. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide a saw blade locking device, aiming to improve the versatility of the saw blade locking device.

[0006] To achieve the above purpose, the saw blade locking device proposed by the utility model includes:

[0007] A connecting seat, one end of the connecting seat is provided with an opening for inserting the saw blade, and the opening is provided with a first clamping portion;

[0008] A locking member, which is arranged inside the connecting seat, faces the first clamping portion and is radially movable relative to the connecting seat;

[0009] An elastic member, which is abutted between the side of the locking member facing away from the first clamping portion and the inner wall of the connecting seat;

[0010] A pressing assembly, which is arranged on the connecting seat and is movable relative to the connecting seat, and the pressing assembly is connected to the locking member; the pressing assembly includes a release position and a pressing position. When the pressing assembly is in the release position, the locking member moves radially along the connecting seat under the action of the elastic member to the first clamping portion and abuts against the first clamping portion to lock the saw blade; when the pressing assembly is in the pressing position, the pressing assembly applies pressure to the locking member to make the locking member away from the first clamping portion, and then separates from the first clamping portion to release the saw blade.

[0011] Optionally, a clamping structure is arranged on the side of the locking member facing the first clamping portion, and the clamping structure is used to limit the axial movement of the saw blade.

[0012] Optionally, the locking member comprises:

[0013] A second clamping portion is arranged opposite to the first clamping portion, the clamping structure is a protrusion arranged on an end surface of the second clamping portion facing the first clamping portion, one end of the elastic member abuts against a side of the second clamping portion away from the first clamping portion, and the other end abuts against the connecting seat;

[0014] A first supporting portion, one end of the first supporting portion is fixedly connected to the second clamping portion, and the other end extends toward the first clamping portion, the pressing assembly abuts against the end surface of the first supporting portion facing the first clamping portion, and an escape groove is provided between the clamping structure and the end of the first supporting portion facing the first clamping portion, and the escape groove can be connected to the opening when pressure is applied to the locking member to allow the saw blade to be inserted.

[0015] Optionally, the locking member comprises:

[0016] A second clamping portion, arranged opposite to the first clamping portion, one end of the elastic member abuts against a side of the second clamping portion away from the first clamping portion, and the other end abuts against the connecting seat;

[0017] The two first supporting parts are arranged opposite to each other, and the clamping structure is a step arranged on each of the first supporting parts. The two clamping structures are arranged opposite to each other, and an avoidance groove is provided between each clamping structure and the end of the corresponding first supporting part facing the first clamping part.

[0018] Optionally, the locking member further includes a second supporting portion, one end of the second supporting portion is connected to a side of the second clamping portion away from the first clamping portion, and the other end extends in a direction away from the second clamping portion, and the elastic member is sleeved on the second supporting portion.

[0019] Optionally, the pressing component includes:

[0020] A button, arranged on the connecting seat;

[0021] A lever is arranged inside the connecting seat, one end of the lever is rotatably connected to the connecting seat, and the other end abuts against the button, the axial end surface of the lever abuts against the first supporting portion, and the distance from the connecting point of the lever and the button to the rotating axis of the lever is not less than the distance from the connecting point of the lever and the first supporting portion to the rotating axis of the lever.

[0022] Optionally, the lever comprises:

[0023] A main body, one end of which is hinged to the connecting seat, and the other end of which is in contact with the button;

[0024] A pressing part, which is arranged at one end of the main body part close to the hinge of the connecting seat.

[0025] Optionally, a pair of lugs are arranged on the main body part in the width direction, the lugs are the pressing part, and the pressing part abuts against the first supporting part.

[0026] Optionally, the connecting seat includes:

[0027] A seat body, in which a receiving space is provided for receiving the locking part, the elastic part and the pressing assembly. An opening is provided at one end of the receiving space, and an installation port is provided at the other end. The installation port is used for connecting with a driving mechanism;

[0028] A housing, sleeved on the outer periphery of the seat body, and part of the pressing assembly penetrates through the outer wall of the housing.

[0029] Optionally, a groove for receiving the locking part is provided on the inner wall of the seat body, the locking part can slide in the groove, and the axial inner wall of the opening forms the first clamping part.

[0030] The present utility model further provides a reciprocating saw, including:

[0031] The above-mentioned saw blade locking device;

[0032] A driving mechanism, one end of the saw blade locking device is connected to the driving mechanism;

[0033] A saw blade, the other end of the saw blade locking device is connected to the saw blade.

[0034] In one technical solution of the embodiment of the present utility model, the saw blade locking device is installed on the driving mechanism through a connecting seat. An opening is provided on the connecting seat, and a first clamping portion is arranged inside the opening. A locking member is arranged inside the connecting seat and is radially movable relative to the connecting seat. The saw blade is inserted between the first clamping portion and the locking member through the opening. The locking member can move closer to or away from the first clamping portion through movement. When the locking member moves closer to the first clamping portion, the saw blade is clamped between the first clamping portion and the locking member. When the locking member moves away from the first clamping portion, the saw blade can be taken out between the first clamping portion and the locking member. The movement of the locking member is driven by a pressing assembly and an elastic member. Among them, the elastic member drives the locking member to move closer to the first clamping portion, and the pressing assembly drives the locking member to move away from the first clamping portion. A clamping structure is further arranged on the side of the locking member facing the first clamping portion. When the locking member moves closer to the first clamping portion, the clamping structure is clamped with the saw blade to limit the axial movement of the saw blade along the connecting seat. When the locking member moves away from the first clamping portion, the clamping structure is separated from the saw blade, so that the saw can be inserted into or withdrawn from the opening. In the natural state of the saw blade locking device, the elastic member drives the locking member to continuously abut against the first clamping portion of the connecting seat; when installing the saw blade, the user presses the pressing assembly, so that the locking member moves in the direction away from the first clamping portion. This process needs to overcome the elastic force of the elastic member and cause the elastic member to deform; when the distance that the locking member moves away from the first clamping portion is not less than the thickness of the saw blade, the saw blade can be inserted between the locking member and the first clamping portion through the opening; then the user releases the pressing assembly, and the elastic member tends to restore its own deformation, which will drive the locking member to move closer to the first clamping portion. The clamping structure moves with the locking member until the locking member abuts against the saw blade, so that the locking member and the first clamping portion clamp both sides of the saw blade along the thickness direction of the saw blade, and the clamping structure is clamped with the saw blade, so that the saw blade cannot move axially along the connecting seat and cannot be withdrawn from the opening, thereby locking the saw blade on the saw blade locking device, and further realizing the connection between the saw blade and the driving mechanism; when the saw blade needs to be removed, the user presses the pressing assembly again, so that the locking member slides in the direction away from the first clamping portion until the clamping structure is separated from the saw blade, and the saw blade can be taken out between the axial self-locking member and the first clamping portion of the connecting seat. By driving the locking member to move closer to the first clamping portion through the elastic member, the saw blade is clamped between the locking member and the first clamping portion, so as to realize the locking of the saw blade. Even if the thickness of the saw blade changes, it can still be clamped between the locking member and the first clamping portion, thus realizing the installation of saw blades with different thicknesses, improving the versatility of the saw blade locking device, and having a simple structure and being easy to implement; when disassembling and assembling the saw blade, the user only needs to press the pressing assembly, the operation is simple, and the disassembly and assembly are convenient. Description of the Drawings

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0036] Figure 1 Schematic structural diagram of an embodiment of a reciprocating saw of the present invention;

[0037] Figure 2 For Figure 1 Partial enlarged view of part A in

[0038] Figure 3 Cross-section of an embodiment of a saw blade locking device of the present invention Figure 1 ;

[0039] Figure 4 Cross-section of an embodiment of a saw blade locking device of the present invention Figure 2 ;

[0040] Figure 5 Schematic structural diagram of a locking member and a clamping structure of a saw blade locking device of the present invention;

[0041] Figure 6 Schematic structural diagram of a lever of a pressing assembly of a saw blade locking device of the present invention;

[0042] Figure 7 Schematic structural diagram of a saw blade of a reciprocating saw of the present invention.

[0043] Explanation of the reference numerals in the drawings:

[0044] Label Name Label Name 100 Saw blade locking device 110 Connecting seat 111 Seat body 1111 First clamping part 112 Shell 120 Locking part 121 Second clamping part 122 First supporting part 1221 Avoidance groove 123 Second supporting part 130 Clamping structure 140 Pressing component 141 Button 142 Lever 1421 Main body part 1422 Pressing part 150 Elastic part 200 Saw blade 210 Card interface 300 Driving mechanism 310 Reciprocating shaft

[0045] The realization, functional features and advantages of the object of the present invention will be further described in conjunction with the embodiments with reference to the drawings. Detailed implementation manners

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0047] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship, movement conditions, etc. between components in a certain specific posture (as shown in the attached drawings). If this specific posture changes, the directional indications will also change accordingly.

[0048] In the present utility model, unless otherwise clearly specified and defined, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0049] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0050] The present utility model provides a saw blade locking device.

[0051] Refer to Figures 1 to 4 , Figure 1 , which is a schematic structural diagram of an embodiment of a reciprocating saw of the present utility model. Figure 2 is Figure 1 a partial enlarged view of part A in Figure 3 , which is a sectional view of an embodiment of the saw blade locking device of the present utility model. Figure 1 , Figure 4 , which is a sectional view of an embodiment of the saw blade locking device of the present utility model. Figure 2 , Figure 7 , which is a schematic structural diagram of the saw blade of the reciprocating saw of the present utility model.

[0052] In the embodiments of the present utility model, the saw blade locking device 100 includes:

[0053] The connecting seat 110, one end of the connecting seat 110 is provided with an opening for the saw blade 200 to be inserted, and the opening is provided with a first clamping portion 1111;

[0054] The locking member 120 is arranged inside the connecting seat 110, facing the first clamping portion 1111 and radially movable relative to the connecting seat 110;

[0055] The elastic member 150 is abutted between the side of the locking member 120 facing away from the first clamping portion 1111 and the connecting seat 110;

[0056] The pressing assembly 140 is arranged on the connecting seat 110 and is movable relative to the connecting seat 110, and the pressing assembly 140 is connected to the locking member 120; the pressing assembly includes a release position and a pressing position. Among them, when the pressing assembly 140 is in the release position, the locking member 120 moves radially along the connecting seat 110 under the action of the elastic member 150 to the first clamping portion 1111 and abuts against the first clamping portion 1111 to lock the saw blade; when the pressing assembly 140 is in the pressing position, the pressing assembly 140 applies pressure to the locking member 120 to make the locking member 120 away from the first clamping portion 1111, and then separates from the first clamping portion 1111 to release the saw blade.

[0057] Optionally, a clamping structure 130 is provided on the side of the locking member 120 facing the first clamping portion 1111, and the clamping structure 130 is used to limit the axial movement of the saw blade 200.

[0058] Specifically, pressure is applied to the locking member 120 through the pressing assembly 140. Under the action of the elastic member 150, the locking member 120 moves radially along the connecting seat 110 so that the first clamping portion 1111 approaches the clamping structure 130 to lock the saw blade 200, or separates the first clamping portion 1111 from the clamping structure 130 to release the saw blade 200. The saw blade locking device 100 in a technical solution of the embodiment of the present utility model is installed on the driving mechanism 300 through the connecting seat 110. An opening is provided on the connecting seat 110, and a first clamping portion 1111 is provided in the opening. The locking member 120 is arranged inside the connecting seat 110 and is radially movable relative to the connecting seat 110. The saw blade 200 is inserted between the first clamping portion 1111 and the locking member 120 through the opening. The locking member 120 can move closer to or away from the first clamping portion 1111. When the locking member 120 approaches the first clamping portion 1111, the saw blade 200 is clamped between the first clamping portion 1111 and the locking member 120. When the locking member 120 moves away from the first clamping portion 1111, the saw blade 200 can be taken out from between the first clamping portion 1111 and the locking member 120. The movement of the locking member 120 is driven by the pressing assembly 140 and the elastic member 150. Among them, the elastic member 150 urges the locking member 120 to approach the first clamping portion 1111, and the pressing assembly 140 urges the locking member 120 to move away from the first clamping portion 1111. A clamping structure 130 is further provided on the side of the locking member 120 facing the first clamping portion 1111. When the locking member 120 approaches the first clamping portion 1111, the clamping structure 130 is clamped with the saw blade 200 to limit the axial movement of the saw blade 200 along the connecting seat 110. When the locking member 120 moves away from the first clamping portion 1111, the clamping structure 130 is separated from the saw blade 200, so that the saw blade can be inserted into or withdrawn from the opening.When the saw blade locking device 100 is in a natural state, the elastic member 150 drives the locking member 120 to continuously abut against the first clamping portion 1111 of the connecting seat 110; when the saw blade 200 needs to be installed, the user presses the pressing assembly 140 to move the locking member 120 in a direction away from the first clamping portion 1111. This process requires overcoming the elastic force of the elastic member 150, causing the elastic member 150 to deform; when the distance between the locking member 120 and the first clamping portion 1111 is not less than the thickness of the saw blade 200, the saw blade 200 can be inserted through the opening between the locking member 120 and the first clamping portion 1111; then the user releases the pressing assembly 140, the elastic member 150 tends to restore its own deformation, and drives the locking member 120 to approach the first clamping portion 1111, and the clamping structure 130 follows the locking member 120 moves until the locking member 120 abuts against the saw blade 200, so that the locking member 120 and the first clamping portion 1111 clamp the two sides of the saw blade 200 along the thickness direction of the saw blade 200, and the clamping structure 130 is clamped with the saw blade 200, so that the saw blade 200 cannot move axially along the connecting seat 110 and cannot withdraw from the opening, thereby locking the saw blade 200 on the saw blade locking device 100, thereby realizing the connection between the saw blade 200 and the driving mechanism 300; when the saw blade 200 needs to be removed, the user presses the pressing assembly 140 again to slide the locking member 120 in the direction away from the first clamping portion 1111 until the clamping structure 130 is separated from the saw blade 200, and the saw blade 200 can be removed from between the locking member 120 and the first clamping portion 1111 axially of the connecting seat 110. The locking member 120 is driven by the elastic member 150 to approach the first clamping portion 1111, so that the saw blade 200 is clamped between the locking member 120 and the first clamping portion 1111, thereby locking the saw blade 200. Even if the thickness of the saw blade 200 changes, it can still be clamped between the locking member 120 and the first clamping portion 1111, thereby realizing the installation of saw blades 200 of different thicknesses, improving the versatility of the saw blade locking device 100, and the structure is simple and easy to implement. When disassembling the saw blade 200, the user only needs to press the pressing assembly 140, which is simple to operate and convenient for disassembly and assembly.

[0059] Optionally, the locking member 120 includes: a second clamping portion 121, which is arranged opposite to the first clamping portion 1111; the clamping structure 130 is a protrusion arranged on an end surface of the second clamping portion 121 facing the first clamping portion 1111; one end of the elastic member 150 abuts against a side of the second clamping portion 121 away from the first clamping portion 1111, and the other end abuts against the connecting seat 110;

[0060] The first support portion 122, one end of the first support portion 122 is fixedly connected to the second clamping portion 121, and the other end extends toward the first clamping portion 1111, the pressing assembly 140 abuts against the end surface of the first support portion 122 facing the first clamping portion 1111, and an avoidance groove 1221 is provided between the clamping structure 130 and the end of the first support portion 122 facing the first clamping portion 1111, and the avoidance groove 1221 can be connected to the opening when pressure is applied to the locking member 120 for the saw blade 200 to be inserted.

[0061] Please refer to Figure 5 In this embodiment, the locking member 120 includes a second clamping portion 121 and a first supporting portion 122. The second clamping portion 121 and the first clamping portion 1111 are arranged opposite to each other. The locking member 120 clamps the two sides of the saw blade 200 through the second clamping portion 121 and the first clamping portion 1111. The structure is simple and easy to implement. The first supporting portion 122 is arranged on the second clamping portion 121. The connecting seat 110 is provided with a groove corresponding to the first supporting portion 122. The first supporting portion 122 can slide along the groove. The pressing component 140 abuts against one end of the first supporting portion 122 away from the second clamping portion 121. When the user presses the pressing component 140, the pressing component 140 moves to drive the first supporting portion 122 to slide, thereby driving the second clamping portion 121 to slide. The structure is simple and easy to implement. The elastic member 150 is arranged on the side of the second clamping portion 121 away from the first clamping portion 1111. When the user presses the pressing assembly 140, the elastic member 150 is deformed by pressure. When the user releases the pressing assembly 140, the elastic member 150 tends to restore its own deformation, so that the second clamping portion 121 is close to the first clamping portion 1111. The second clamping portion 121 drives the first support portion 122 to slide, and the sliding of the first support portion 122 drives the pressing assembly 140 to reset. The clamping structure 130 is a protrusion arranged at one end of the second clamping portion 121 facing the first clamping portion 1111, arranged at the connection between the first support portion 122 and the second clamping portion 121, and connecting the first support portion 122 and the second clamping portion 121, so that the connection between the locking member 120 and the clamping structure 130 is more firmly connected. In the process of the saw blade 200 cutting bone tissue, it is not easy to damage the connection between the saw blade locking device 100 and the saw blade 200. An escape groove 1221 is defined between the clamping structure 130 and one end of the first supporting portion 122 facing the first clamping portion 1111 . The escape groove 1221 can be connected to the opening when pressure is applied to the locking member 120 to allow the saw blade 200 to be inserted.

[0062] Optionally, the locking member 120 includes:

[0063] The second clamping portion 121 is disposed opposite to the first clamping portion 1111 , one end of the elastic member 150 abuts against a side of the second clamping portion 121 away from the first clamping portion 1111 , and the other end abuts against the connecting seat 110 ;

[0064] The two first supporting parts 122 are arranged opposite to each other, and the clamping structure 130 is a step arranged on each first supporting part 122. The two clamping structures 130 are arranged opposite to each other, and an avoidance groove 1221 is formed between each clamping structure 130 and one end of the corresponding first supporting part 122 facing the first clamping part 1111.

[0065] Please combine Figures 3 to 5 In this embodiment, the locking member 120 includes two first support portions 122 that are spaced apart. Specifically, in this embodiment, the two first support portions 122 are disposed at both ends of the second clamping portion 121. Each first support portion 122 abuts against the pressing assembly 140. When the pressing assembly 140 drives the locking member 120 to slide, the locking member 120 is subjected to more uniform force, thereby reducing the possibility of the locking member 120 being skewed during the sliding process. Two clamping structures 130 are arranged between the two first supporting parts 122. One first supporting part 122 is connected to one clamping structure 130, so that the two clamping structures 130 are located on both sides of the width direction of the saw blade 200. The clamping interfaces 210 are correspondingly arranged on both sides of the width direction of the saw blade 200. When the saw blade 200 is clamped between the first clamping part 1111 and the second clamping part 121, the two clamping structures 130 are respectively inserted into the corresponding clamping interfaces 210, so that the two clamping structures 130 clamp both sides of the width direction of the saw blade 200. On the one hand, the saw blade 200 is locked tighter, and the saw blade 200 is less likely to fall off when installed on the saw blade locking device 100. On the other hand, the force on the saw blade 200 is more evenly applied, and the possibility of damage to the saw blade 200 and the saw blade locking device 100 is reduced during the process of the saw blade 200 cutting bone tissue. Please refer to the reference for details. Figures 3 to 5 In this embodiment, the two first supporting parts 122 are both provided with an avoidance groove 1221, and the avoidance groove 1221 is arranged adjacent to the clamping structure 130. When the pressing assembly 140 drives the locking member 120 to slide in a direction away from the first clamping part 1111, the clamping structure 130 will withdraw from the clamping interface 210 provided on the saw blade 200, and at the same time, the avoidance groove 1221 will be opposite to the clamping interface 210. The avoidance groove 1221 avoids the side of the width of the saw blade 200, so that the saw blade 200 can be smoothly taken out from between the second clamping part 121 and the first clamping part 1111, avoiding the problem of interference between the saw blade 200 and the first supporting part 122 causing obstruction to the disassembly and assembly of the saw blade 200.

[0066] Optionally, the locking member 120 further includes a second supporting portion 123 , one end of the second supporting portion 123 is connected to a side of the second clamping portion 121 away from the first clamping portion 1111 , and the other end extends in a direction away from the second clamping portion 121 , and the elastic member 150 is sleeved on the second supporting portion 123 .

[0067] Please combine Figures 3 to 5, in this embodiment, the locking member 120 further includes a second supporting portion 123. The elastic member 150 is sleeved outside the second supporting portion 123 to limit the elastic member 150. On the one hand, it enables the elastic member 150 to deform only along the extending direction of the second supporting portion 123, avoiding problems such as bending of the elastic member 150 and prolonging the service life of the elastic member 150. On the other hand, it makes the contact point between the elastic member 150 and the second clamping portion 121 fixed, and the force application point of the second clamping portion 121 by the elastic member 150 will not change significantly, making the force on the second clamping portion 121 more uniform.

[0068] Optionally, the pressing assembly 140 includes:

[0069] A button 141, arranged on the connecting seat 110;

[0070] A lever 142, arranged inside the connecting seat 110. One end of the lever 142 is rotatably connected to the connecting seat 110, and the other end abuts against the button 141. The axial end face of the lever 142 abuts against the first supporting portion 122. The distance from the connection point of the lever 142 and the button 141 to the rotation axis of the lever 142 is not less than the distance from the connection point of the lever 142 and the first supporting portion 122 to the rotation axis of the lever 142.

[0071] Please combine Figures 3 to 6 , in this embodiment, the pressing assembly 140 includes a button 141 and a lever 142. The button 141 is movably connected to the connecting seat 110, and the lever 142 is rotatably connected to the connecting seat 110. When the user presses the button 141, it drives the lever 142 to move, and the lever 142 then drives the first supporting portion 122 to slide. Since the distance from the connection point of the lever 142 and the button 141 to the rotation axis of the lever 142 is not less than the distance from the connection point of the lever 142 and the first supporting portion 122 to the rotation axis of the lever 142, the user can drive the locking member 120 to slide with less force, making it more labor-saving for the user to operate the pressing assembly 140. Even female or elderly users can easily disassemble and assemble the saw blade 200. Specifically in this embodiment, the button 141 includes a button 141 seat and a button 141 cap. The button 141 seat is slidably connected to the connecting seat 110 and is arranged inside the housing 112. The button 141 cap is arranged on the button 141 seat, and one end of the button 141 cap away from the button 141 seat is exposed outside the housing 112 for the user to press conveniently.

[0072] Optionally, the lever 142 includes:

[0073] A main body portion 1421, one end of the main body portion 1421 is hinged to the connecting seat 110, and the other end abuts against the button 141;

[0074] A pressing portion 1422, arranged at one end of the main body portion 1421 close to the hinge of the connecting seat 110.

[0075] Please refer to Figures 2 to 6 In this embodiment, the lever 142 includes a main body portion 1421 and a pressing portion 1422. One end of the main body portion 1421 is rotatably connected to the connecting seat 110, the other end of the main body portion 1421 abuts against the button 141, the pressing portion 1422 is disposed between the two ends of the main body portion 1421, and the pressing portion 1422 abuts against the first support portion 122, so that the distance from the connection point between the lever 142 and the button 141 to the rotation axis of the lever 142 is not less than the distance from the connection point between the lever 142 and the first support portion 122 to the rotation axis of the lever 142. The overall structure of the lever 142 is compact, and the labor-saving function can be achieved through a relatively short length.

[0076] Optionally, a pair of lugs are provided on the main body portion 1421 in the width direction, the lugs are the pressing portions 1422, and the pressing portions 1422 abut against the first support portion 122.

[0077] Please refer to Figure 6 In this embodiment, a lug is provided on each side of the main body portion 1421, and each lug forms a pressing portion 1422. One pressing portion 1422 corresponds to one first support portion 122. When the locking member 120 is driven to slide by the lever 142, the pressing portions 1422 on both sides of the main body portion 1421 uniformly transmit the force to the two first support portions 122, so that the locking member 120 is more evenly stressed, and the situation that the locking member 120 is skewed in attitude when the user presses the pressing assembly 140 to make the locking member 120 slide is avoided, thereby avoiding the problem of difficult disassembly and assembly caused by the locking member 120 and the connecting seat 110 being stuck.

[0078] Optionally, the locking member 120 and the clamping structure 130 are of an integral structure.

[0079] Please refer to Figure 5 In this embodiment, the locking member 120 and the clamping structure 130 are integrally formed. Specifically in this embodiment, the second clamping portion 121, the second support portion 123, the two first support portions 122 and the two clamping structures 130 are all integrally formed, which simplifies the number of parts, improves the assembly efficiency, and makes the connection between the locking member 120 and the clamping structure 130 more firm. During the process of the saw blade 200 cutting the bone tissue, it is not easy to damage the locking member 120 and the clamping structure 130, thereby ensuring that the saw blade 200 is firmly installed.

[0080] Optionally, the connecting seat 110 includes:

[0081] A seat body 111, in which a receiving space is provided for receiving the locking member 120, the elastic member 150 and the pressing assembly 140. One end of the receiving space is provided with an opening, and the other end is provided with a mounting opening for connecting with the driving mechanism 300;

[0082] The housing 112 is sleeved on the outer periphery of the base body 111, and a part of the pressing assembly 140 penetrates through the outer wall of the housing 112.

[0083] Please refer to Figures 2 to 4 , in this embodiment, the connecting base 110 includes a base body 111 and a housing 112. The base body 111 is provided with a receiving space, an installation opening and an opening communicating with the receiving space. The base body 111 is sleeved on the outer periphery of the reciprocating shaft 310 through the installation opening. The base body 111 and the reciprocating shaft 310 can also be connected by forms such as screwing or clamping to improve the connection strength between the base body 111 and the reciprocating shaft 310. One end of the base body 111 away from the reciprocating shaft 310 is provided with an opening, and the saw blade 200 is inserted into the opening. A part of the inner wall of the opening forms a first clamping portion 1111. Therefore, as long as the thickness of the saw blade 200 satisfies the condition of being able to be inserted into the opening, the saw blade locking device 100 can be connected to the driving mechanism 300. Another part of the inner wall of the opening can also play a role in supporting the saw blade 200, improving the stability of the saw blade 200 when cutting bone tissue, and reducing the possibility of the saw blade 200 bending. The locking member 120, the clamping structure 130 and the elastic member 150 are all arranged inside the receiving space of the base body 111, and are sleeved on the outside of the base body 111 through the housing 112. On the one hand, it can play a role in protecting the above-mentioned components, reducing the possibility of damage to the above-mentioned components, and extending the service life of the above-mentioned components. On the other hand, it can prevent the above-mentioned components from being exposed to the medical environment and causing pollution to the medical environment, ensuring good sanitary conditions.

[0084] Optionally, a groove for accommodating the locking member 120 is provided on the inner wall of the base body 111, and the locking member 120 can slide in the groove, and the axial inner wall of the opening forms a first clamping portion 1111.

[0085] In this embodiment, a groove for accommodating the locking member 120 is provided on the inner wall of the base body 111, and the locking member 120 can slide in the groove. Specifically, the groove corresponds to the first support portion 122, and the first support portion 122 can slide along the groove. The groove plays a guiding role for the locking member 120, ensuring that the moving track of the locking member 120 is more accurate and reducing the possibility of the saw blade locking device 100 getting stuck.

[0086] The present utility model also proposes a reciprocating saw, including:

[0087] The above-mentioned saw blade locking device 100;

[0088] A driving mechanism 300, one end of the saw blade locking device 100 is connected to the driving mechanism 300;

[0089] A saw blade 200, the other end of the saw blade locking device 100 is connected to the saw blade 200.

[0090] The reciprocating saw includes a drive mechanism 300, a saw blade 200, and a saw blade locking device 100. For the specific structure of the saw blade locking device 100, refer to the above embodiments. Since this reciprocating saw adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated one by one here. Among them, the saw blade locking device 100 is connected to the reciprocating shaft 310 of the drive mechanism 300, and the saw blade 200 is installed on the saw blade locking device 100. When the reciprocating shaft 310 performs a linear reciprocating motion, it drives the saw blade locking device 100 to perform a linear reciprocating motion, thereby driving the saw blade 200 on the saw blade locking device 100 to perform a linear reciprocating motion, realizing the sawing function of the saw blade 200. Through the above saw blade locking device 100, different thicknesses of saw blades 200 can be installed on the same drive mechanism 300. On the one hand, it enables the reciprocating saw to assemble saw blades 200 with different thicknesses according to different sawing requirements, meeting more complex surgical needs; on the other hand, the disassembly and assembly are fast, reducing the time wasted caused by disassembling and assembling the saw blade 200 and improving the safety of the surgery; on the further hand, there is no need to prepare corresponding saw blade locking devices 100, or even corresponding drive mechanisms 300 according to saw blades 200 with different thicknesses, thereby improving the convenience of surgical operations and reducing the surgical cost.

[0091] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A saw blade locking device, characterized in that, Comprising: A connecting seat, one end of the connecting seat is provided with an opening for inserting a saw blade, and the opening is provided with a first clamping portion; A locking member, disposed inside the connecting seat, facing the first clamping portion and axially movable relative to the connecting seat; An elastic member, abutted between a side of the locking member facing away from the first clamping portion and the inner wall of the connecting seat; A pressing assembly, disposed on the connecting seat and movable relative to the connecting seat, and the pressing assembly is connected to the locking member; the pressing assembly includes a release position and a pressing position. When the pressing assembly is in the release position, the locking member moves radially along the connecting seat under the action of the elastic member to the first clamping portion and abuts against the first clamping portion to lock the saw blade; When the pressing assembly is in the pressing position, the pressing assembly applies a pressure to the locking member to move the locking member away from the first clamping portion, and then separates from the first clamping portion to release the saw blade.

2. The saw blade locking device according to claim 1, characterized in that, A clamping structure is provided on a side of the locking member facing the first clamping portion, and the clamping structure is used to limit the axial movement of the saw blade.

3. The saw blade locking device according to claim 2, characterized in that, The locking member includes: A second clamping portion, oppositely arranged with the first clamping portion, the clamping structure is a protrusion provided on an end face of the second clamping portion facing the first clamping portion, one end of the elastic member abuts against a side of the second clamping portion facing away from the first clamping portion, and the other end abuts against the connecting seat; A first support portion, one end of the first support portion is fixedly connected to the second clamping portion, and the other end extends towards the first clamping portion. The pressing assembly abuts against an end face of the first support portion facing the first clamping portion, and there is an avoidance groove between the clamping structure and an end of the first support portion facing the first clamping portion. The avoidance groove can communicate with the opening when the locking member is applied with pressure for the saw blade to be inserted.

4. The saw blade locking device according to claim 3, characterized in that, The locking member includes: A second clamping portion, oppositely arranged with the first clamping portion, one end of the elastic member abuts against a side of the second clamping portion facing away from the first clamping portion, and the other end abuts against the connecting seat; Two oppositely arranged first support portions, the clamping structure is a step provided on each first support portion, the two clamping structures are oppositely arranged, and there is an avoidance groove between each clamping structure and an end of the corresponding first support portion facing the first clamping portion.

5. The saw blade locking device according to any one of claims 3-4, characterized in that, The locking member further includes a second support portion, one end of the second support portion is connected to a side of the second clamping portion facing away from the first clamping portion, and the other end extends away from the second clamping portion, and the elastic member is sleeved on the second support portion.

6. The saw blade locking device according to claim 3 or 4, characterized in that, The pressing assembly includes: A button, disposed on the connecting seat; A lever, disposed inside the connecting seat, one end of the lever is rotatably connected to the connecting seat, the other end abuts against the button, an axial end face of the lever abuts against the first support portion, and the distance from the connection point between the lever and the button to the rotation axis of the lever is not less than the distance from the connection point between the lever and the first support portion to the rotation axis of the lever.

7. The saw blade locking device according to claim 6, characterized in that, The lever includes: A main body portion, one end of the main body portion is hinged to the connecting seat, and the other end is in contact with the button; A pressing portion, the pressing portion is provided at one end of the main body portion close to the hinge of the connecting seat.

8. The saw blade locking device according to claim 7, wherein, The main body portion is provided with a pair of lugs in the width direction, the lugs are the pressing portion, and the pressing portion is in contact with the first supporting portion.

9. The saw blade locking device according to claim 1, characterized in that, The connecting seat includes: A seat body, a receiving space is provided in the seat body for receiving the locking member, the elastic member and the pressing assembly, an opening is provided at one end of the receiving space, and an installation port is provided at the other end, and the installation port is used for connecting with the driving mechanism; A housing, sleeved on the outer periphery of the seat body, and a part of the pressing assembly penetrates through the outer wall of the housing.

10. The saw blade locking device according to claim 9, characterized in that, A groove for receiving the locking member is provided on the inner wall of the seat body, the locking member can slide in the groove, and the axial inner wall of the opening forms the first clamping portion.

11. A reciprocating saw, characterized in that, Including: The saw blade locking device according to any one of claims 1-10; A driving mechanism, one end of the saw blade locking device is connected to the driving mechanism; A saw blade, the other end of the saw blade locking device is connected to the saw blade.

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