Connection assembly

Abstract

The utility model discloses a connecting assembly for the connection and disconnection of a pump shaft and a movable shaft, which comprises a first connecting piece and a second connecting piece, the first connecting piece is arranged at one end of the pump shaft close to the movable shaft, the second connecting piece is arranged at one end of the movable shaft close to the pump shaft, and the first connecting piece is detachably connected with the second connecting piece; a mounting seat, the mounting seat has a mounting channel extending in a first direction, and the mounting channel is used for mounting the movable shaft; and a driving piece, the driving piece is connected with the mounting seat and drives the mounting seat to be movable in the first direction, so that the first connecting piece is disconnected with the second connecting piece. The connecting assembly can realize quick installation and replacement of the reciprocating pump.

Description

Technical Field

[0001] This utility model relates to the field of medical water jet equipment technology, and more specifically, to a connecting component. Background Technology

[0002] To avoid cross-infection caused by inadequate sterilization, the reciprocating high-pressure pump that generates the water jet in medical water jet devices is often designed as a disposable medical consumable that has undergone sterilization at the factory. Therefore, the reciprocating high-pressure pump needs to be replaced frequently.

[0003] Among them, reciprocating piston pumps have become the most widely used product by manufacturers in the industry due to their simple structure, reliable function, and low cost. The piston of a reciprocating piston pump performs a linear reciprocating motion to create a volume change within the pump barrel. During the volume increase, saline solution is drawn in through the suction port; during the volume decrease, saline solution is discharged through the discharge port and out through a fine orifice, forming a high-pressure water jet to cut body tissue and perform surgery. Furthermore, the structural feature of a reciprocating piston pump is that there is a linear relative movement between the pump barrel and the piston rod, requiring the pump barrel and piston to be engaged and disengaged from the housing support and drive shaft on the main unit during loading and unloading.

[0004] In existing implementations, during the loading of the high-pressure pump, after the pump casing is fixed, the piston rod is typically manually connected to the power shaft using couplings, mechanical pins, expansion sleeves, or similar methods. The connection also needs to be manually disconnected during the dismantling of the high-pressure pump.

[0005] Furthermore, piston rods are often designed to be installed inside the main unit, resulting in limited operating space. Manual connection methods are inconvenient, and the use of couplings, mechanical pins, or expansion sleeves leads to high concentricity of the connecting shafts, requiring adjustment, testing, and replacement, which is time-consuming and labor-intensive. Moreover, since the reciprocating motion of the piston requires frequencies as high as several hundred Hz, the connecting parts will experience wear and fatigue damage after repeated use. If internal fractures or failures occur during medical surgery, it can cause significant damage to the surgical procedure and potentially endanger human health.

[0006] In summary, existing medical water jet devices have the following technical drawbacks: limited space, inconvenient operation for replacing reciprocating pumps, high installation requirements, need for connection adjustment and testing, and serious consequences of failure. Utility Model Content

[0007] One objective of this invention is to provide a solution that at least addresses the technical problem of inconvenient reciprocating pump replacement operations in the prior art.

[0008] To achieve the above objectives, the present invention provides the following technical solution.

[0009] A connecting assembly according to a first aspect of the present invention is used for connecting and disconnecting a pump shaft and a movable shaft. The connecting assembly includes: a first connecting member and a second connecting member, the first connecting member being disposed at one end of the pump shaft near the movable shaft, and the second connecting member being disposed at one end of the movable shaft near the pump shaft, the first connecting member and the second connecting member being detachably connected; a mounting base having a mounting channel extending along a first direction for mounting the movable shaft; and a driving member connected to the mounting base and driving the mounting base to be movable along the first direction, thereby disengaging the first connecting member from the second connecting member.

[0010] Optionally, the first connector has a claw, and the surface of the second connector has a groove, wherein when the second connector and the first connector are connected, the claw engages with the groove.

[0011] Optionally, the claw includes two hooks arranged opposite each other in a second direction, at least one hook having a first inclined surface on the side near the mounting base. When the second connector and the first connector are connected, there is a space between the first inclined surface and the outer peripheral surface of the movable shaft, and at least a portion of the surface of the mounting base on the side near the pump shaft can be engaged in the space.

[0012] Optionally, the first inclined surface has a first step, and the outer periphery of the movable shaft has a second step. When the second connector and the first connector are connected, a step surface of the first step and a step surface of the second step abut in the first direction.

[0013] Optionally, the mounting base has a second inclined surface on the side near the pump shaft, and the angle between the second inclined surface and the axial direction of the movable shaft is smaller than the angle between the first inclined surface and the axial direction of the movable shaft.

[0014] Optionally, the mounting base has a rounded corner at one end near the pump shaft, and a second inclined surface is located at the position corresponding to the rounded corner. The second inclined surface is an arc-shaped surface.

[0015] Optionally, the first connector is fixedly connected to the pump shaft, and the second connector is integrally formed with the movable shaft.

[0016] Optionally, the first connector and the second connector are connected by electromagnetic attraction.

[0017] Optionally, when the first connector and the second connector are connected to each other, in a first direction, the mounting base and the second connector are located on the same side of the first connector, and the mounting base is opposite to a portion of the first connector.

[0018] Optionally, the drive has an output shaft that is threadedly connected to the mounting base.

[0019] The connecting assembly according to this utility model embodiment combines a first connector, a second connector, a mounting base, and a driving component. The first and second connectors are interconnected to achieve the engagement between the pump shaft and the movable shaft. The mounting base and the driving component cooperate to achieve the disengagement between the pump shaft and the movable shaft. This connecting assembly can be applied to medical water jet devices and can be used to install and replace reciprocating pumps.

[0020] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0022] Figure 1 This is a schematic diagram showing the first connector of a connecting assembly according to an embodiment of the present invention moving toward the second connector;

[0023] Figure 2 This is a schematic diagram showing the interconnection of a first connector and a second connector of a connecting assembly according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram showing the mounting base of a connecting assembly according to an embodiment of the present invention driving the first and second connecting members to disengage.

[0025] Attached Figure

[0026] Connection component 1;

[0027] First connector 11; claw 111; hook 1111; first inclined surface 1112; first step 1113;

[0028] Second connector 12; slot 121;

[0029] Mounting base 13; mounting channel 131; second inclined surface 132;

[0030] Pump shaft 2;

[0031] Movable axis 3; Second step 31;

[0032] Drive component 4; Output shaft 41. Detailed Implementation

[0033] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0034] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0035] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0036] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0038] The connecting component 1 according to an embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0039] like Figures 1 to 3 As shown, the connecting component 1 according to an embodiment of the present utility model is used for connecting and disconnecting the pump shaft 2 and the movable shaft 3. The connecting component 1 includes a first connecting member 11, a second connecting member 12, a mounting base 13 and a driving member 4.

[0040] Specifically, the first connector 11 is located at one end of the pump shaft 2 near the movable shaft 3, and the second connector 12 is located at one end of the movable shaft 3 near the pump shaft 2. The first connector 11 and the second connector 12 are detachably connected. The mounting base 13 has a mounting channel 131 extending in a first direction for mounting the movable shaft 3. The driving member 4 is connected to the mounting base 13 and drives the mounting base 13 to move in the first direction so that the first connector 11 is disengaged from the second connector 12.

[0041] In other words, the connecting component 1 according to this embodiment of the present invention mainly includes a first connecting member 11, a second connecting member 12, a mounting base 13, and a driving member 4. The mounting base 13 is provided with a mounting channel 131, the axis of which extends approximately along a first direction. The movable shaft 3 can be disposed within the mounting channel 131 and can move approximately along the first direction. When the pump shaft 2 and the movable shaft 3 are in a locked state, the first connecting member 11 and the second connecting member 12 are connected; when the pump shaft 2 and the movable shaft 3 are in an unlocked state, the first connecting member 11 and the second connecting member 12 are disengaged. Using the connecting component 1 facilitates switching the pump shaft 2 and the movable shaft 3 from a locked state to an unlocked state.

[0042] A first connecting member 11 is provided at the end of the pump shaft 2 near the movable shaft 3, and a second connecting member 12 is provided at the end of the movable shaft 3 near the pump shaft 2. For example, the pump shaft 2 and the movable shaft 3 extend horizontally and are relatively movable in the horizontal direction. The pump shaft 2 can move horizontally toward and away from the location of the movable shaft 3. The first connecting member 11 is provided at the right end of the pump shaft 2, and the second connecting member 12 is provided at the left end of the movable shaft 3. Optionally, the pump shaft 2 and the first connecting member 11 are connected by a clamping plate, which allows for quick disassembly and installation between the pump shaft 2 and the first connecting member 11 using tools. The first connecting member 11 can be fixed on the pump shaft 2, achieving an integral connection and disassembly between the pump shaft 2 and the first connecting member 11. Here, "clamping plate connection" is a connection method that fixes two or more objects (such as plates, components, etc.) together through a specific structure or component. It can be understood that by setting the first connecting member 11 together with the pump shaft 2, the first connecting member 11 can be used as a consumable, thereby enabling convenient replacement of the entire assembly.

[0043] Since the first connector 11 and the second connector 12 are detachably connected, when the first connector 11 and the second connector 12 are connected, the pump shaft 2 and the movable shaft 3 can move synchronously, that is, move approximately along the first direction. When the first connector 11 and the second connector 12 are separated, the pump shaft 2 can be removed from the movable shaft 3, and the pump shaft 2 and the movable shaft 3 are in an unlocked state.

[0044] In addition, the mounting base 13 is also connected to the drive member 4. The drive member 4 can drive the mounting base 13 to move in the first direction. The mounting base 13 can switch the first connector 11 and the second connector 12 from the locked state to the unlocked state. For example, the mounting base 13 applies a force to the first connector 11 away from the second connector 12 until the first connector 11 and the second connector 12 are disengaged.

[0045] Therefore, the connecting assembly 1 according to this embodiment of the present invention combines a first connecting member 11, a second connecting member 12, a mounting base 13, and a driving member 4. The first connecting member 11 and the second connecting member 12 are interconnected, enabling the connection between the pump shaft 2 and the movable shaft 3. The pump shaft 2 and the movable shaft 3 can be disengaged through the cooperation of the mounting base 13 and the driving member 4. The connecting assembly 1 of this embodiment of the present invention can be applied to medical water jet devices, and can be used to install and replace reciprocating pumps.

[0046] According to one embodiment of this utility model, the first connecting member 11 has a claw 111, and the surface of the second connecting member 12 has a groove 121. When the second connecting member 12 and the first connecting member 11 are connected, the claw 111 engages with the groove 121. That is, the first connecting member 11 includes the claw 111, and the surface of the second connecting member 12 has the groove 121, and the claw 111 can cooperate with the groove 121. When installing the reciprocating pump, the pump shaft 2 is pushed towards the position of the movable shaft 3. Under the pressure of the second connecting member 12, the claw 111 opens elastically and engages with the groove 121, thus completing the connection between the first connecting member 11 and the second connecting member 12. When removing the reciprocating pump, the driving member 4 can drive the mounting base 13 to move towards the position of the first connecting member 11, opening the claw 111, releasing the locking state between the first connecting member 11 and the second connecting member 12, and replacing the first connecting member 11 together with the pump shaft 2.

[0047] In this embodiment, the use of the jaw 111 provides a degree of elasticity and reduces the requirement for coaxiality, allowing for flexible coaxiality compatibility. The structure of the jaw 111 ensures a reliable axial connection, minimizing coaxiality requirements and eliminating the need for adjustment to meet connection requirements. Furthermore, the combination of the jaw 111 and the slot 121 reduces the probability of failure and facilitates convenient and rapid replacement, making the entire process simple and convenient, enabling quick connection and disassembly of the pump shaft 2 and the movable shaft 3. Therefore, in this embodiment, by using the jaw 111, a stable axial connection between the jaw 111 and the movable shaft 3 can be simultaneously achieved during the installation of the reciprocating pump.

[0048] Furthermore, when the connecting component 1 of this embodiment is applied to a medical water jet device, the jaw 111 can be connected to the pump shaft 2 as a consumable, allowing for quick replacement during surgery. This greatly reduces the risk of failure of the first connecting component 11. Even if failure occurs, the reciprocating pump and the first connecting component 11 can be removed together for rapid replacement. In other words, the jaw 111 can be used as a consumable, avoiding fatigue damage. It experiences minimal mechanical wear during single use and does not affect the transmission function. Even if damage occurs, it can be quickly removed from the reciprocating pump as a whole for rapid replacement.

[0049] In some specific embodiments of this utility model, the chuck 111 includes two hooks 1111 disposed opposite each other in a second direction. For example, the chuck 111 includes two hooks 1111 spaced apart in a vertical direction. At least one hook 1111 has a first inclined surface 1112 on the side near the mounting base 13. When the second connector 12 and the first connector 11 are connected, there is a space between the first inclined surface 1112 and the outer peripheral surface of the movable shaft 3. At least a portion of the surface of the mounting base 13 near the pump shaft 2 can be engaged into the space. For example, there is an angle between the first inclined surface 1112 and the outer peripheral surface of the movable shaft 3, and this angle is acute.

[0050] When the first connector 11 and the second connector 12 are connected, one end of the first inclined surface 1112 can extend beyond the outer peripheral surface of the movable shaft 3, that is, there is a space for movement between the first inclined surface 1112 and the outer peripheral surface of the movable shaft 3. When the driving member 4 drives the mounting base 13 to move along the first direction until the mounting base 13 contacts the first connector 11, at least a portion of the surface of the mounting base 13 near the pump shaft 2 can be engaged in the space for movement, that is, located between the first inclined surface 1112 and the outer surface of the movable shaft 3, so that the pawl 111 can be opened by driving the mounting base 13, which facilitates the disengagement of the second connector 12 and the first connector 11.

[0051] In other words, the latch 111 includes two latches 1111 spaced apart along a second direction, and the second direction may have an angle with the first direction, for example, around 90°. At least one latch 1111 is provided with a first inclined surface 1112, located on the side of the latch 1111 closest to the mounting base 13. There is a space between the first inclined surface 1112 and the outer peripheral surface of the movable shaft 3; for example, the first inclined surface 1112 and the axial direction of the movable shaft 3 form an acute angle, i.e., the angle between the first inclined surface 1112 and the first direction is acute. One end of the first inclined surface 1112 of one latch 1111 extends out of the outer peripheral surface of the movable shaft 3 in the second direction, and the other end of the first inclined surface 1112 extends toward the location of the other latch 1111.

[0052] When installing the reciprocating pump, the first inclined surface 1112 can contact the end of the second connector 12 near the first connector 11. For example, the end of the second connector 12 presses the claw 111 to the left, the hook 1111 deforms approximately along the second direction, the space between the two hooks 1111 in the second direction increases, the second connector 12 extends into the space between the two hooks 1111, and then the hooks 1111 engage with the slot 121.

[0053] When disassembling the reciprocating pump, the drive unit 4 moves the mounting base 13 along the first direction, for example, the drive unit 4 moves the mounting base 13 to the left. Until the mounting base 13 presses against the hook 1111, causing the hook 1111 to deform outward along the second direction, the space between the two hooks 1111 in the second direction increases, and the second connector 12 and the first connector 11 can be separated.

[0054] In this embodiment, by using the claw 111 and the mounting base 13 in cooperation, and by providing a first inclined surface 1112 on the hook 1111, the mounting base 13 can smoothly open the claw 111, making it convenient to quickly remove the reciprocating pump.

[0055] According to one embodiment of the present invention, a first inclined surface 1112 has a first step 1113, and the outer periphery of the movable shaft 3 has a second step 31. When the second connecting member 12 and the first connecting member 11 are connected, that is, when the second connecting member 12 and the first connecting member 11 are in a locked state, one step surface of the first step 1113 and one step surface of the second step 31 abut in a first direction. For example, the surface of the first step 1113 on the first inclined surface 1112 includes a step surface extending in a vertical direction and another step surface extending in a horizontal direction. The outer periphery of the movable shaft 3 is provided with a second step 31, and the surface of the second step 31 also includes a step surface extending in a vertical direction and another step surface extending in a horizontal direction. When the second connecting member 12 and the first connecting member 11 are connected, one step surface of the first step 1113 and one step surface of the second step 31 abut in a first direction. Through surface-to-surface contact, the stability of the movable shaft 3 and the pump shaft 2 during synchronous movement can be improved, and it can also play a limiting role in the first direction.

[0056] In some specific embodiments of this utility model, the mounting base 13 has a second inclined surface 132 on the side near the pump shaft 2. For example, the left end of the mounting base 13 is close to the first connecting member 11 and is formed as a cylindrical member extending in the left-right direction. The outer peripheral surface of the left end of the mounting base 13 extends in the left-right direction, and the left end face extends in the up-down direction. The left end face and the outer peripheral surface of the left end of the mounting base 13 are connected by the second inclined surface 132. The angle between the second inclined surface 132 and the axial direction of the movable shaft 3 is smaller than the angle between the first inclined surface 1112 and the axial direction of the movable shaft 3. For example, the second inclined surface 132 and the first inclined surface 1112 are inclined to the same side relative to the first direction. When the second inclined surface 132 abuts against the first inclined surface 1112, the chuck 111 can be driven to open.

[0057] According to one embodiment of this application, the end of the mounting base 13 near the pump shaft 2 has a rounded corner, and a second inclined surface 132 is located at the position corresponding to the rounded corner. The second inclined surface 132 is an arc-shaped surface. That is, the mounting base 13 adopts an R-angle design, i.e., the second inclined surface 132 is an arc-shaped surface. For example, the left end of the mounting base 13 is formed as a cylindrical member extending in the left-right direction. The left end of the mounting base 13 is close to the first connector 11. The outer edge of the left end of the mounting base 13 has a rounded corner. The outer peripheral surface of the mounting base 13 extends in the left-right direction, and the left end face extends in the up-down direction. The left end face and the outer peripheral surface of the left end of the mounting base 13 are connected by the second inclined surface 132. In this embodiment, by adopting the mutual cooperation of the shape design of the second inclined surface 132 and the first inclined surface 1112, the mounting base 13 can smoothly open the claw 111, making it easier and faster to remove the reciprocating pump.

[0058] According to one embodiment of this utility model, the first connecting member 11 is fixedly connected to the pump shaft 2. That is to say, the first connecting member 11 can be used as a consumable, and the first connecting member 11 and the pump shaft 2 can be integrated as a whole, enabling convenient replacement of the whole. The second connecting member 12 is integrally formed with the movable shaft, which is easy to process and manufacture, and has high structural stability.

[0059] In some specific embodiments of this utility model, the first connecting member 11 and the second connecting member 12 are connected by electromagnetic attraction. That is, by adding an electromagnetic coil, the movable shaft 3 can have a strong electromagnetic attraction to connect the pump shaft 2 and realize transmission. In addition, the mounting base 13 can apply a force away from the first connecting member 11 and the second connecting member 12 to disengage the first connecting member 11 and the second connecting member 12. For example, the first connecting member 11 and the second connecting member 12 can also cooperate with each other through electromagnetic attraction, bringing the first connecting member 11 and the second connecting member 12 closer to each other in the left and right direction. At this time, under the action of electromagnetic attraction, the first connecting member 11 and the second connecting member 12 can be connected to each other; when it is necessary to disconnect, the driving member 4 drives the mounting base 13 to move to the left. The mounting base 13 moves to the left and applies a force to the left to the first connecting member 11, so that the first connecting member 11 and the second connecting member 12 can be separated by the mounting base 13.

[0060] According to one embodiment of this application, when the first connector 11 and the second connector 12 are connected to each other, in a first direction, the mounting base 13 and the second connector 12 are located on the same side of the first connector 11, for example, both are located on the right side of the first connector 11, and the mounting base 13 is opposite to a portion of the first connector 11, for example, a portion of the right end of the first connector 11 is opposite to the left end of the mounting base 13. That is, in order to facilitate the mounting base 13 to apply force to the first connector 11, when the first connector 11 and the second connector 12 are connected to each other, a portion of the first connector 11 can extend out of the second connector 12, that is, the mounting base 13 is opposite to a portion of the first connector 11 in the first direction.

[0061] According to one embodiment of the present invention, the drive member 4 has an output shaft 41, which is threadedly connected to the mounting base 13. The output shaft 41 can drive the mounting base 13 to reciprocate in the first direction, which has the functions of convenient operation and saving space in the second direction.

[0062] In summary, the connecting component 1 according to the present invention combines a first connector 11, a second connector 12, a mounting base 13, and a driving component 4, and can be applied to medical water jet devices, enabling quick installation and replacement of reciprocating pumps.

[0063] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A connecting assembly (1) for connecting and disconnecting a pump shaft (2) and a movable shaft (3), characterized in that, The connection component (1) includes: A first connector (11) and a second connector (12), wherein the first connector (11) is located at one end of the pump shaft (2) near the movable shaft (3), and the second connector (12) is located at one end of the movable shaft (3) near the pump shaft (2), and the first connector (11) and the second connector (12) are detachably connected. Mounting base (13), the mounting base (13) having a mounting channel (131) extending in a first direction for mounting the movable shaft (3); A driving member (4) is connected to the mounting base (13) and drives the mounting base (13) to be movable in the first direction so that the first connecting member (11) is disengaged from the second connecting member (12).

2. The connecting component (1) according to claim 1, characterized in that, The first connector (11) has a claw (111), and the surface of the second connector (12) has a groove (121). When the second connector (12) and the first connector (11) are connected, the claw (111) engages with the groove (121).

3. The connecting component (1) according to claim 2, characterized in that, The claw (111) includes two hooks (1111) arranged opposite each other in a second direction. At least one of the hooks (1111) has a first inclined surface (1112) on the side near the mounting base (13). When the second connector (12) and the first connector (11) are connected, there is a space between the first inclined surface (1112) and the outer peripheral surface of the movable shaft (3). At least a portion of the surface of the mounting base (13) on the side near the pump shaft (2) can be engaged in the space.

4. The connecting component (1) according to claim 3, characterized in that, The first inclined surface (1112) has a first step (1113), and the outer periphery of the movable shaft (3) has a second step (31). When the second connector (12) and the first connector (11) are connected, a step surface of the first step (1113) and a step surface of the second step (31) abut in the first direction.

5. The connecting component (1) according to claim 3, characterized in that, The mounting base (13) has a second inclined surface (132) on the side near the pump shaft (2), and the angle between the second inclined surface (132) and the axial direction of the movable shaft (3) is smaller than the angle between the first inclined surface (1112) and the axial direction of the movable shaft (3).

6. The connecting component (1) according to claim 3, characterized in that, The mounting base (13) has a rounded corner at one end near the pump shaft (2), and the position corresponding to the rounded corner has a second inclined surface (132), which is an arc-shaped surface.

7. The connecting component (1) according to claim 2, characterized in that, The first connector (11) is fixedly connected to the pump shaft (2), and the second connector (12) is integrally formed with the movable shaft.

8. The connecting component (1) according to claim 1, characterized in that, The first connector (11) and the second connector (12) are connected by electromagnetic attraction.

9. The connecting component (1) according to claim 8, characterized in that, When the first connector (11) and the second connector (12) are connected to each other, in the first direction, the mounting base (13) and the second connector (12) are located on the same side of the first connector (11), and the mounting base (13) is opposite to a part of the first connector (11).

10. The connecting component (1) according to claim 2, characterized in that, The drive unit (4) has an output shaft (41) which is threadedly connected to the mounting base (13).

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