Reciprocating saw blade mounting mechanism, reciprocating saw head and medical reciprocating saw

Abstract

The utility model discloses a reciprocating saw blade mounting mechanism, reciprocating saw head and medical reciprocating saw relates to medical instrument technical field, wherein, reciprocating saw blade mounting mechanism is used for locking or releasing saw blade, include: reciprocating axle is equipped with along the saw blade slot of self axial extension, and the saw blade slot is used for installing saw blade, button, the outside of reciprocating axle is covered and can be active along the radial direction of reciprocating axle, elastic part, be located between reciprocating axle and button and to button exert elastic force, locking piece, with button detachable connection and wear in reciprocating axle, locking piece can be active along the radial direction of reciprocating axle, wherein, button is pressed and makes elastic part compression and make locking piece avoid saw blade slot, and the saw blade is relative to saw blade slot and can be plugged, and button releases pressure and makes elastic part rebound to make locking piece extend into saw blade slot and lock saw blade. The utility model provides technical scheme to improve the convenience of user dismounting saw blade.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a reciprocating saw blade mounting mechanism, a reciprocating saw head, and a medical reciprocating saw. Background Technology

[0002] A reciprocating saw is a commonly used orthopedic surgical cutting tool, generally consisting of a head, a power handle, and a saw blade. The head connects the power handle and the saw blade and transmits power. The saw blade is detachably mounted on the head via a mounting mechanism, allowing for easy replacement with different blade sizes as needed.

[0003] A saw blade mounting mechanism includes an inner cylinder and an outer cylinder. The outer cylinder is rotatably fitted around the inner cylinder and can switch between a disassembly position and a working position by rotation. When the outer cylinder is in the disassembly position, the edge groove on the outer cylinder coincides with the axial projection of the axial receiving groove on the inner cylinder, allowing the reciprocating saw blade to enter and exit. When the outer cylinder is in the working position, the edge groove on the outer cylinder is offset from the axial receiving groove on the inner cylinder, and the outer cylinder axially limits the reciprocating saw blade to prevent it from coming out.

[0004] In other words, when the saw blade needs to be installed, the user needs to rotate the outer cylinder to the disassembly position so that the edge groove of the outer cylinder is aligned with the axial receiving groove of the inner cylinder. After the saw blade is inserted into place, the user needs to rotate the outer cylinder again to rotate it to the working position. The operation steps for the user to disassemble and install the saw blade are cumbersome and inconvenient. Utility Model Content

[0005] The main purpose of this utility model is to provide a reciprocating saw blade installation mechanism, a reciprocating saw head, and a medical reciprocating saw, aiming to improve the convenience of users in assembling and disassembling saw blades.

[0006] To achieve the above objectives, the present invention provides a reciprocating saw blade mounting mechanism for locking or releasing the saw blade; comprising:

[0007] The reciprocating shaft is provided with a saw blade groove extending along its own axial direction, the saw blade groove being used to install the saw blade;

[0008] A button, sleeved on the outside of the reciprocating shaft and movable radially along the reciprocating shaft;

[0009] An elastic element is disposed between the reciprocating shaft and the button and applies a spring force to the button;

[0010] A locking element, detachably connected to the button and passing through the reciprocating shaft, is radially movable along the reciprocating shaft; wherein,

[0011] When the button is pressed, the elastic element is compressed, causing the locking member to avoid the saw blade slot. The saw blade is insertable and removable relative to the saw blade slot. When the button is released, the elastic element rebounds, allowing the locking member to extend into the saw blade slot and lock the saw blade.

[0012] In one embodiment, the elastic element is a cylindrical helical spring, and multiple cylindrical helical springs are spaced apart along the axial direction of the reciprocating shaft.

[0013] In one embodiment, the outer wall of the reciprocating shaft is provided with a plurality of first mounting slots, and each cylindrical helical spring is inserted into one of the first mounting slots.

[0014] The inner wall of the button is provided with a second mounting groove, and multiple cylindrical helical springs are inserted into the interior of the second mounting groove.

[0015] In one embodiment, the outer wall of the reciprocating shaft is provided with a notch, and a plurality of first mounting slots are provided on the bottom wall of the notch.

[0016] In one embodiment, the button includes:

[0017] A sleeve portion, fitted onto the outside of the reciprocating shaft and movable radially along the reciprocating shaft, wherein the locking member is detachably connected to the sleeve portion; and

[0018] A protrusion is provided on the outer wall of the sleeve portion;

[0019] The elastic element is located on the side of the reciprocating shaft facing the protrusion, and the locking element is located on the other side of the reciprocating shaft away from the protrusion.

[0020] In one embodiment, the saw blade groove has a locking groove on its inner wall near the protrusion, and the saw blade groove has a mounting hole on its inner wall away from the protrusion. The mounting hole and the locking groove are arranged opposite to each other. The locking member is movably inserted through the mounting hole. Driven by the elastic member, the locking member passes through the saw blade groove and is inserted into the interior of the locking groove.

[0021] In one embodiment, it further includes a front housing and a rear housing, both of which are fitted over the reciprocating shaft and are disposed on both sides of the button along the axial direction of the reciprocating shaft;

[0022] Wherein, at the position where the locking member exits the saw blade groove, the protrusion protrudes from the outer surface of the front housing, and / or, the protrusion protrudes from the outer surface of the rear housing.

[0023] In one embodiment, the inner wall of the sleeve portion is provided with an axially penetrating mounting groove, and the locking member includes:

[0024] The mounting base is inserted into the assembly slot;

[0025] A locking part, one end of which is connected to the mounting base, and the other end of which passes through the reciprocating shaft; and

[0026] A snap-fit ​​structure is provided between the mounting base and the assembly slot to prevent the mounting base from coming out of the assembly slot.

[0027] This utility model also proposes a reciprocating saw head, comprising:

[0028] The drive shaft, and the aforementioned reciprocating saw blade mounting mechanism; the drive shaft is connected to the reciprocating shaft.

[0029] This utility model also proposes a medical reciprocating saw, comprising:

[0030] The aforementioned reciprocating saw head;

[0031] The power handle drives the reciprocating saw head.

[0032] The saw blade is detachably connected to the saw blade groove.

[0033] The reciprocating saw blade mounting mechanism of this utility model includes a reciprocating shaft, a button, a locking element, and an elastic element. The reciprocating shaft has a saw blade groove for mounting the saw blade. The button is sleeved on the outside of the reciprocating shaft and can move radially along the reciprocating shaft. The locking element is connected to the button and passes through the reciprocating shaft. The radial movement of the button causes the locking element to extend into or retract from the saw blade groove. Specifically, when the locking element extends into the saw blade groove and engages with the locking hole on the saw blade, it locks the saw blade, fixing it in the saw blade groove and preventing it from falling out. When the locking element retracts from the saw blade groove, it unlocks the saw blade, allowing the saw blade to be inserted and removed relative to the saw blade groove, thereby realizing the installation and removal of the saw blade. A spring-loaded element is located between the reciprocating shaft and the button, applying a spring force to the button. When the user presses the button, the spring-loaded element compresses, causing the locking element to move away from the saw blade slot, allowing the saw blade to be inserted and removed relative to the slot. When the user releases the button, the spring-loaded element rebounds, and its spring force drives the button back to its original position. The button then moves the locking element into the saw blade slot to lock the saw blade, ensuring it remains within the slot and maintains a secure lock. This improves the reliability of the saw blade lock and eliminates the need for manual operation when locking the saw blade. The user only needs to operate the button to unlock, reducing the steps involved in disassembling and assembling the saw blade and improving the ease of use of the reciprocating saw blade mounting mechanism. Furthermore, the detachable connection between the locking element and the button facilitates disassembly of both the button and the locking element, as well as the spring-loaded element between the button and the reciprocating shaft, thus improving the maintenance convenience of the saw blade mounting mechanism. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0035] Figure 1 Cross-sectional view of an embodiment of the reciprocating saw blade mounting mechanism provided by this utility model. Figure 1 ;

[0036] Figure 2 Cross-sectional view of an embodiment of the reciprocating saw blade mounting mechanism provided by this utility model. Figure 2 ;

[0037] Figure 3 Cross-sectional view of an embodiment of the reciprocating saw blade mounting mechanism provided by this utility model. Figure 3 ;

[0038] Figure 4 This is a schematic diagram of the structure of an embodiment of the reciprocating saw head provided by this utility model.

[0039] Explanation of icon numbers:

[0040] 100. Reciprocating shaft; 101. Saw blade groove; 102. First mounting groove; 103. Notch groove; 104. Locking groove;

[0041] 200, Button; 210, Sleeve portion; 211, Second mounting groove; 220, Protrusion;

[0042] 300. Locking element; 310. Mounting base; 320. Locking part; 330. Snap-fit ​​structure;

[0043] 400. Elastic components;

[0044] 500. Front housing;

[0045] 600. Rear housing.

[0046] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0047] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0048] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0049] In this utility model, unless otherwise explicitly specified and limited, the terms "connection" and "fixation" should be interpreted broadly. For example, "fixation" can mean a fixed connection, a detachable connection, or an integral part; "connection" can mean a mechanical connection or an electrical connection, a direct connection or an indirect connection through an intermediate medium, or a connection within two components or an interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0050] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0051] This utility model proposes a reciprocating saw blade mounting mechanism.

[0052] Please see Figures 1 to 2 , Figure 1 Cross-sectional view of an embodiment of the reciprocating saw blade mounting mechanism provided by this utility model. Figure 1 , Figure 2 Cross-sectional view of an embodiment of the reciprocating saw blade mounting mechanism provided by this utility model. Figure 2 .

[0053] In one embodiment of this utility model, the reciprocating saw blade mounting mechanism is used to lock or release the saw blade; it includes:

[0054] The reciprocating shaft 100 is provided with a saw blade groove 101 extending along its own axial direction. The saw blade groove 101 is used to install a saw blade.

[0055] Button 200 is sleeved on the outside of reciprocating shaft 100 and is movable radially along reciprocating shaft 100;

[0056] An elastic element 400 is disposed between the reciprocating shaft 100 and the button 200 and applies a spring force to the button 200;

[0057] A locking element 300 is detachably connected to the button 200 and passes through the reciprocating shaft 100; the locking element 300 is radially movable along the reciprocating shaft 100.

[0058] When the button 200 is pressed, the elastic element 400 is compressed, causing the locking element 300 to avoid the saw blade groove 101. The saw blade is insertable and removable relative to the saw blade groove 101. When the button 200 is released, the elastic element 400 rebounds, allowing the locking element 300 to extend into the saw blade groove 101 to lock the saw blade.

[0059] The reciprocating saw blade mounting mechanism of this utility model includes a reciprocating shaft 100, a button 200, a locking member 300, and an elastic member 400. The reciprocating shaft 100 is provided with a saw blade groove 101 for mounting the saw blade. The button 200 is sleeved on the outside of the reciprocating shaft 100 and can move radially along the reciprocating shaft 100. The locking member 300 is connected to the button 200 and passes through the reciprocating shaft 100. The radial movement of the button 200 drives the locking member 300 to extend into or retract from the saw blade groove 101. Specifically, when the locking member 300 extends into the saw blade groove 101 and cooperates with the locking hole on the saw blade, it locks the saw blade, fixing the saw blade in the saw blade groove 101 and preventing the saw blade from falling off. When the locking member 300 retracts from the saw blade groove 101, it unlocks the saw blade, allowing the saw blade to be inserted and removed relative to the saw blade groove 101, thereby realizing the installation and removal of the saw blade. The elastic element 400 is located between the reciprocating shaft 100 and the button 200, and applies a spring force to the button 200. When the user presses the button 200, the elastic element 400 is compressed, and the locking element 300 moves away from the saw blade groove 101 along with the button 200, so that the saw blade can be inserted and removed relative to the saw blade groove 101. When the user releases the button 200, the elastic element 400 rebounds, and the spring force of the elastic element 400 drives the button 200 to reset. The button 200 then drives the locking element 300 to extend into the saw blade groove 101 to lock the saw blade, so that the locking element 300 can remain in the saw blade groove 101 to maintain the locking of the saw blade. On the one hand, it improves the reliability of the saw blade locking, and on the other hand, it makes the locking of the saw blade by the reciprocating saw blade mounting mechanism unnecessary to operate manually. The user only needs to operate the button 200 when unlocking, which reduces the operation steps of disassembling and assembling the saw blade and improves the ease of use of the reciprocating saw blade mounting mechanism. In addition, the locking element 300 is detachably connected to the button 200, which facilitates the disassembly of the button 200 and the locking element 300, and also facilitates the disassembly of the elastic element 400 between the button 200 and the reciprocating shaft 100, thereby improving the maintenance convenience of the saw blade installation mechanism.

[0060] The elastic element 400 can take various forms such as a cylindrical helical spring or a disc spring, and no limitation is made here.

[0061] In one embodiment, the elastic element 400 is a cylindrical helical spring, and multiple cylindrical helical springs are spaced apart along the axial direction of the reciprocating shaft 100.

[0062] Combination Figure 2 and Figure 3In this embodiment of the invention, the elastic element 400 is a cylindrical helical spring. Cylindrical helical springs are standard parts, with mature manufacturing processes and easy availability. By selecting appropriate models and specifications, elasticity requirements can be easily met, reducing the manufacturing cost of the reciprocating saw head and lowering the difficulty and cost of maintenance and replacement. Multiple cylindrical helical springs are arranged at certain intervals along the axial direction of the reciprocating shaft 100. These multiple springs provide stronger elastic force, making the locking element 300 more secure in fixing the saw blade. Furthermore, the pressure applied to the reciprocating shaft 100 by the multiple cylindrical helical springs is more uniform, and the elastic force applied to the button 200 is also more uniform, extending the service life of the reciprocating saw head.

[0063] In one embodiment, the outer wall of the reciprocating shaft 100 is provided with a plurality of first mounting grooves 102, and each elastic member 400 is inserted into a first mounting groove 102.

[0064] Combination Figure 2 and Figure 3 In this embodiment of the present invention, a first mounting groove 102 is provided on the outer wall of the reciprocating shaft 100 corresponding to each elastic element 400. Each elastic element 400 is inserted into a first mounting groove 102, which facilitates the positioning of the elastic element 400 and ensures that each elastic element 400 is installed in the correct position. In addition, the restriction of the first mounting groove 102 can prevent the elastic element 400 from moving during the extension and retraction process, thereby ensuring the stability of the elastic force applied to the button 200, and thus ensuring the reliability of the locking member 300 locking the saw blade.

[0065] In one embodiment, the outer wall of the reciprocating shaft 100 is provided with a notch 103, and a plurality of first mounting grooves 102 are provided on the bottom wall of the notch 103.

[0066] Combination Figures 1 to 3 In this embodiment of the invention, a notch 103 is provided on the outer wall of the reciprocating shaft 100. By providing the notch 103, the gap between the reciprocating shaft 100 and the button 200 is increased, which provides more space for installing the elastic element 400 and facilitates the radial movement of the button 200 without increasing the overall size of the button 200. The first mounting grooves 102 are all provided on the bottom wall of the notch 103, so that multiple first mounting grooves 102 are machined from a plane, reducing the machining difficulty of the first mounting grooves 102.

[0067] In one embodiment, the inner wall of the button 200 is provided with a second mounting groove 211, and a plurality of elastic elements 400 are inserted into the interior of the second mounting groove 211.

[0068] Combination Figures 1 to 3In this embodiment of the invention, the inner wall of the button 200 is provided with a second mounting groove 211. By setting the second mounting groove 211, the gap between the reciprocating shaft 100 and the button 200 is increased, which can provide more space for the installation of the elastic element 400 and facilitate the radial movement of the button 200 without increasing the overall size of the button 200. The first mounting grooves 102 are all set on the bottom wall of the notch groove 103, so that multiple first mounting grooves 102 are machined from a plane, reducing the machining difficulty of the first mounting grooves 102. Specifically, in this embodiment, the second mounting groove 211 is arranged opposite to the notch groove 103, and the width of the second mounting groove 211 is smaller than the width of the notch groove 103. When the button 200 is pressed and the locking element 300 is disengaged from the saw blade groove 101, the periphery of the groove opening of the second mounting groove 211 abuts against the bottom wall of the notch groove 103, limiting the maximum pressing stroke of the button 200 and realizing the radial movement limit of the button 200.

[0069] In one embodiment, button 200 includes:

[0070] The sleeve portion 210 is sleeved on the outside of the reciprocating shaft 100 and is radially movable along the reciprocating shaft 100; the locking member 300 is detachably connected to the sleeve portion 210; and

[0071] The protrusion 220 protrudes from the outer wall of the sleeve portion 210;

[0072] Among them, the elastic member 400 is provided on the side of the reciprocating shaft 100 facing the protrusion 220, and the locking member 300 is provided on the other side of the reciprocating shaft 100 away from the protrusion 220.

[0073] Combination Figures 1 to 3 In this embodiment of the invention, the button 200 includes a sleeve portion 210 and a protrusion 220. The sleeve portion 210 is sleeved on the outside of the reciprocating shaft 100 and can move in the radial direction of the reciprocating shaft 100. The protrusion 220 protrudes from the outer wall of the sleeve portion 210, facilitating user operation. The entire button 200 has a simple structure. The elastic element 400 and the locking element 300 are located on both sides of the saw blade groove 101, resulting in high space utilization and a compact structure. The elastic element 400 is a compression spring, located on the side of the reciprocating shaft 100 near the protrusion 220. When the user presses the button 200, the elastic element 400 deforms under pressure, and the locking element 300 exits the saw blade groove 101. When the user releases the button 200, the elastic element 400 returns to its original shape, resetting the button 200, while the locking element 300 extends into the saw blade groove 101.

[0074] In one embodiment, the saw blade groove 101 is provided with a locking groove 104 on the inner wall near the protrusion 220, and the saw blade groove 101 is provided with a mounting hole on the inner wall away from the protrusion 220. The mounting hole and the locking groove 104 are arranged opposite to each other. The locking member 300 is movably inserted through the mounting hole. Driven by the elastic member 400, the locking member 300 passes through the saw blade groove 101 and is inserted into the interior of the locking groove 104.

[0075] Combination Figures 1 to 3 In this embodiment of the present invention, the reciprocating shaft 100 also has a locking groove 104 and a mounting hole. The locking groove 104 and the mounting hole are respectively disposed on the two inner walls of the saw blade groove 101. The locking member 300 passes through the mounting hole. When the locking member 300 extends into the saw blade groove 101 to lock the saw blade, the locking member 300 passes through the saw blade groove 101 and inserts into the locking groove 104, so that the two ends of the locking member 300 are supported by the inner wall of the locking groove 104 and the inner wall of the mounting hole respectively, which improves the stability and firmness of the locking member 300 in the saw blade groove 101, thereby improving the reliability of locking the saw blade.

[0076] In one embodiment, the reciprocating saw head further includes a front housing 500 and a rear housing 600, both of which are sleeved on the reciprocating shaft 100 and are disposed on both sides of the button 200 along the axial direction of the reciprocating shaft 100.

[0077] Wherein, at the position where the locking member 300 exits the saw blade groove 101, the protrusion 220 protrudes from the outer surface of the front housing 500, and / or, the protrusion 220 protrudes from the outer surface of the rear housing 600.

[0078] Reference Figure 1 , Figure 2 and Figure 4 In this embodiment of the invention, a front housing 500 and a rear housing 600 are respectively provided on the front and rear sides of the button 200 along the axial direction of the reciprocating shaft 100. The reciprocating shaft 100 passes through the front housing 500 and the rear housing 600 and can perform linear reciprocating motion relative to the front housing 500 and the rear housing 600. The front housing 500 and the rear housing 600 serve as support and protection. When the button 200 is pressed down to its maximum stroke, that is, when the user drives the button 200 to disengage the locking member 300 from the saw blade groove 101, the protrusion 220 protrudes from the outer surface of the front housing 500, ensuring that the user's fingertip in contact with the button 200 is not obstructed by the front housing 500. Similarly, the protrusion 220 protrudes from the outer surface of the rear housing 600, ensuring that the user's fingertip in contact with the button 200 is not obstructed by the rear housing 600, thereby improving the convenience and comfort of the user operating the button 200.

[0079] In one embodiment, the inner wall of the sleeve portion 210 is provided with an axially penetrating mounting groove, and the locking member 300 includes:

[0080] Mounting base 310 is inserted into the assembly slot;

[0081] Locking part 320, one end of locking part 320 is connected to mounting base 310, and the other end of locking part 320 passes through reciprocating shaft 100; and

[0082] The snap-fit ​​structure 330 is located between the mounting base 310 and the assembly slot to prevent the mounting base 310 from coming out of the assembly slot.

[0083] Combination Figures 1 to 2 In this embodiment of the invention, the locking member 300 includes a mounting base 310, a locking part 320, and a snap-fit ​​structure 330. The locking part 320 is vertically connected to the middle of the mounting base 310. The mounting base 310 passes through the assembly groove on the inner wall of the sleeve part 210 of the button 200. Specifically, during assembly, the locking part 320 is first inserted into the mounting hole on the reciprocating shaft 100, and then the button 200 is sleeved on the outside of the reciprocating shaft 100 along the axial direction of the reciprocating shaft 100. During the sleeve-fitting process of the button 200, the mounting base 310 of the locking member 300 passes through the assembly groove of the button 200, realizing the connection between the button 200 and the limiting member. The snap-fit ​​structure 330 is provided between the mounting base 310 and the assembly groove to prevent the mounting base 310 from coming out of the assembly groove, thereby preventing the button 200 and the locking member 300 from separating, ensuring that the button 200 can drive the locking member 300 to move when it moves radially along the reciprocating shaft 100. The snap-fit ​​structure 330 can be implemented in various forms such as snap-fit ​​and slot. Specifically, in this embodiment, the width of the groove opening opposite to the reciprocating shaft 100 is smaller than the width of the groove bottom. The shape of the mounting base 310 is set to correspond to the assembly groove, so that the mounting base 310 can only enter and exit the assembly groove along the axial direction of the reciprocating shaft 100, and cannot enter and exit the assembly groove from the groove opening. This avoids the separation of the locking member 300 and the button 200, and ensures the reliability of the button 200 and the locking member 300 in locking and unlocking the saw blade.

[0084] This utility model also proposes a reciprocating saw head, comprising:

[0085] The drive shaft, and the aforementioned reciprocating saw blade mounting mechanism, are connected to the reciprocating shaft 100.

[0086] The specific structure of the reciprocating saw blade mounting mechanism is as described in the above embodiments. Since the reciprocating saw head adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here. Among them, the transmission shaft and the reciprocating shaft 100 can adopt a transmission structure such as a crank rocker mechanism or a cam mechanism, so that the rotational motion of the transmission shaft is converted into the linear reciprocating motion of the reciprocating shaft 100.

[0087] This utility model also proposes a medical reciprocating saw, comprising:

[0088] The aforementioned reciprocating saw head;

[0089] The power handle drives the transmission shaft connected to the reciprocating saw head;

[0090] The saw blade is detachably connected to the saw blade groove 101.

[0091] The specific structure of the reciprocating saw head is as described in the above embodiments. Since this medical reciprocating saw adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0092] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A reciprocating saw blade mounting mechanism for locking or releasing a blade; characterized by, include: Back and forth The shaft has a saw blade groove extending along its own axial direction, the saw blade groove being used to install the saw blade; A button, sleeved on the outside of the reciprocating shaft and movable radially along the reciprocating shaft; An elastic element is disposed between the reciprocating shaft and the button and applies a spring force to the button; A locking element, detachably connected to the button and passing through the reciprocating shaft, is radially movable along the reciprocating shaft; wherein, When the button is pressed, the elastic element is compressed, causing the locking member to avoid the saw blade slot. The saw blade is insertable and removable relative to the saw blade slot. When the button is released, the elastic element rebounds, allowing the locking member to extend into the saw blade slot and lock the saw blade.

2. The reciprocating saw blade mounting mechanism of claim 1, wherein, The elastic element is a cylindrical helical spring, and multiple cylindrical helical springs are spaced apart along the axial direction of the reciprocating shaft.

3. The reciprocating saw blade mounting mechanism of claim 2, wherein, The outer wall of the reciprocating shaft is provided with a plurality of first mounting slots, and each cylindrical helical spring is inserted into one of the first mounting slots. The inner wall of the button is provided with a second mounting groove, and multiple cylindrical helical springs are inserted into the interior of the second mounting groove.

4. The reciprocating saw blade mounting mechanism of claim 3, wherein The outer wall of the reciprocating shaft is provided with a notch, and a plurality of first mounting slots are provided on the bottom wall of the notch.

5. The reciprocating saw blade mounting mechanism of claim 1, wherein, The button includes: A sleeve portion, fitted onto the outside of the reciprocating shaft and movable radially along the reciprocating shaft, wherein the locking member is detachably connected to the sleeve portion; and A protrusion is provided on the outer wall of the sleeve portion; The elastic element is located on the side of the reciprocating shaft facing the protrusion, and the locking element is located on the other side of the reciprocating shaft away from the protrusion.

6. The reciprocating saw blade mounting mechanism of claim 5, wherein, The saw blade groove has a locking groove on its inner wall near the protrusion, and the saw blade groove has a mounting hole on its inner wall away from the protrusion. The mounting hole and the locking groove are arranged opposite to each other. The locking member is movably inserted through the mounting hole. Driven by the elastic member, the locking member passes through the saw blade groove and is inserted into the interior of the locking groove.

7. The reciprocating saw blade mounting mechanism of claim 5, wherein, It also includes a front housing and a rear housing, both of which are fitted over the reciprocating shaft and are disposed on both sides of the button along the axial direction of the reciprocating shaft; Wherein, at the position where the locking member exits the saw blade groove, the protrusion protrudes from the outer surface of the front housing, and / or, the protrusion protrudes from the outer surface of the rear housing.

8. The reciprocating saw blade mounting mechanism of claim 5, wherein, The inner wall of the sleeve portion is provided with an axially penetrating mounting groove, and the locking element includes: The mounting base is inserted into the assembly slot; A locking part, one end of which is connected to the mounting base, and the other end of which passes through the reciprocating shaft; and A snap-fit ​​structure is provided between the mounting base and the assembly slot to prevent the mounting base from coming out of the assembly slot.

9. A reciprocating saw head, characterized by include: A drive shaft, and a reciprocating saw blade mounting mechanism as described in any one of claims 1 to 8; the drive shaft is drive-connected to the reciprocating shaft.

10. A medical reciprocating saw characterized by, include: The reciprocating saw head as described in claim 9; The power handle drives the reciprocating saw head. The saw blade is detachably connected to the saw blade groove.

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