Modular syringe pump

Abstract

This utility model relates to a modular injection pump, including a main unit assembly and a slave unit assembly. The main unit assembly has a main controller, and a main port and a secondary port electrically connected to the main controller. The main port is electrically connected to the slave unit assembly, and the secondary port is used for electrical connection to an external accessory device. The slave unit assembly includes a syringe barrel and a syringe piston. The syringe barrel has a material receiving cavity and a material output port. One end of the syringe piston is slidably mounted in the material receiving cavity to push the injection material in the material receiving cavity out of the material output port. It also includes a heating assembly disposed around the syringe barrel and electrically connected to the main controller. This design ensures that the material remains within the required temperature range during injection, thus meeting the requirements of temperature-sensitive processes such as microsphere preparation.

Description

Technical Field

[0001] This utility model relates to the technical field of microfluidics, and in particular to a modular injection pump. Background Technology

[0002] Microfluidic chip technology is widely used due to its high efficiency and accuracy in microsphere preparation, organoid culture, and various experimental detections.

[0003] When using microfluidic chips, a syringe pump is typically used to inject materials into the chip. A conventional syringe pump usually consists of a drive mechanism and a syringe. The material is contained in the syringe, the discharge end of which is connected to the feed end of the microfluidic chip. The drive mechanism pumps the material into the chip by pushing the piston of the syringe. However, this traditional syringe pump has a significant drawback: The temperature of the pumped material depends mainly on the ambient temperature. For some microsphere preparation processes, the material needs to be injected at a specific temperature. If the ambient temperature differs greatly from the required temperature, the injection pump will have difficulty accurately controlling the material temperature, thus affecting the preparation quality and consistency of the microspheres. Utility Model Content

[0004] The technical problem to be solved by this invention is to overcome the defects in the prior art and thus provide a modular injection pump.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A modular injection pump includes a main unit assembly and a slave unit assembly; The host component has a host controller, and a host port and a host sub-port electrically connected to the host controller; The host port is electrically connected to the slave component, and the host secondary port is used for electrical connection with external accessory devices; The slave component includes a syringe barrel and a syringe piston. The syringe barrel has a material receiving cavity and a material output port. One end of the syringe piston is slidably mounted in the material receiving cavity to push the injection material in the material receiving cavity out from the material output port. It also includes a heating component, which is disposed around the syringe barrel and electrically connected to the host controller.

[0006] Preferably, there are several slave components; Each of the slave components includes at least two slave ports that are electrically connected to the host controller; The slave port is electrically connected to the master port and / or the slave port of another adjacent slave component.

[0007] Preferably, the host component and the slave component or two adjacent slave components are detachably connected via a connecting component; The connecting component includes a male and a female latching end that can engage with each other; A connection component that connects the host component and the slave component, wherein one of its male and female latching terminals is mounted on the host component and the other is located on the slave component; A connecting component that connects two adjacent slave components has its male and female latching terminals respectively mounted on the two slave components.

[0008] Preferably, in the mutually cooperating male and female ends of the buckle, The male end of the latch protrudes from the outer wall surface of the host component or the slave component; The female latch is located within the slave assembly or the master assembly, and one side of the female latch has an opening for the male latch to extend into.

[0009] Preferably, the slave component further includes a first fixing component, which includes a first base, a first limiting plate, and a pressure plate; The first base is provided with a groove for placing the syringe barrel; the first limiting plate is fixedly installed on the side wall of the first base by fasteners and can push the first plate of the syringe barrel against the first base; The pressure plate is movably mounted on the first base and can push the outer wall of the syringe barrel to abut against the inner wall of the groove when the syringe barrel is located in the groove.

[0010] Preferably, the heating component is configured as a semiconductor heating element electrically connected to the host controller; The semiconductor heating element is fixedly mounted on the first base.

[0011] Preferably, the slave component further includes a second fixing component and a drive unit; The second fixing component includes a second base and a second limiting plate; The second base is fixedly connected to the moving end of the drive unit; The second limiting plate is mounted on the second base and can push the second plate at the end of the syringe piston to abut against the second base.

[0012] Preferably, the drive unit includes a stepper motor, a ball screw, a sliding seat, and a guide rod; The power output end of the stepper motor is connected to the ball screw to drive the ball screw to rotate; The ball screw is threadedly connected to the sliding seat; The sliding seat is slidably mounted on the guide rod and fixedly connected to the second base.

[0013] Preferably, the second base and the second limiting plate are connected by an adjustment assembly; The adjustment assembly includes a connecting plate, a connecting column, a return spring, and an adjustment knob; The connecting plate is located at the end of the second base away from the second limiting plate, and is fixedly connected to the second limiting plate via a connecting post; The connecting column passes through the second base and is slidably connected to the second base; The reset spring is coaxially arranged with the connecting column, and one end of the reset spring abuts or is connected to the second base axially, while the other end abuts or is connected to the connecting column axially. The adjustment knob is threadedly connected to the connecting plate and can be rotated to axially abut against the second base.

[0014] Preferably, the external accessory device is configured as one or more of a peristaltic pump, an ultraviolet lamp, and a flow meter; And / or, The host component also includes a display electrically connected to the host controller, the display being mounted on the side of the host component away from the slave component via a bracket; The bracket is fixedly connected to the housing of the slave component, and the display is rotatably mounted on the bracket.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention provides a modular injection pump that, by placing a heating element around the periphery of the injection barrel, can heat (i.e., the heating element temperature is higher than the ambient temperature) or cool (i.e., the heating element temperature is lower than the ambient temperature) the material inside the injection barrel. The heating element is electrically connected to a main controller, allowing the controller to adjust its temperature. This enables the user to set the heating or cooling temperature of the material according to their experimental needs, ensuring that the material maintains the required temperature range during injection, thus meeting the requirements of temperature-sensitive processes such as microsphere preparation.

[0016] In addition, the host controller of the main unit can be connected to external accessory devices through the host secondary port to form a multi-functional integrated system to meet more complex experimental requirements or usage needs. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A schematic diagram of one example of the present invention.

[0019] Figure 2 for Figure 1 A schematic diagram of the structure of the host component.

[0020] Figure 3 for Figure 1 A schematic diagram of the structure of the slave unit.

[0021] Figure 4 This is a schematic diagram of the structure of a connection component located on the same host or slave component.

[0022] Figure 5 This is a schematic diagram of the structure after the peripheral housing and connecting components have been removed from the machine assembly.

[0023] Figure 6 This is a schematic diagram showing the installation of the heating component on the first base.

[0024] Figure 7 for Figure 5 A structural diagram from another perspective.

[0025] Figure 8 for Figure 7 A schematic diagram of the section along section AA.

[0026] Figure 9 for Figure 8 An enlarged view of position D1 in the middle.

[0027] Explanation of reference numerals in the attached figures: 1. Main unit assembly; 11. Main unit port; 12. Main unit secondary port; 13. Display; 2. Slave unit assembly; 20. Slave unit port; 21. Syringe barrel; 211. Material receiving cavity; 212. Material output port; 213. First plate; 22. Syringe piston; 221. Second plate; 23. First fixing assembly; 231. First base; 232. First limiting plate; 233. Pressure plate; 24. Second fixing assembly; 241. Second base; 242. Second limiting plate; 25. Drive unit; 251. Stepper motor; 252. Ball screw; 253. Sliding seat; 254. Guide rod; 3. Heating assembly; 4. Connecting assembly; 41. Snap-on male end; 42. Snap-on female end; 5. Opening; 6. Adjusting assembly; 61. Connecting plate; 62. Connecting column; 63. Return spring; 64. Adjusting knob; 7. Bracket. Detailed Implementation

[0028] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] See Figures 1 to 9This utility model provides a modular syringe pump, including a main unit assembly 1, a slave unit assembly 2, and a heating assembly 3. The main unit assembly 1 has a main controller, and a main port 11 and a main auxiliary port 12 electrically connected to the main controller. The main port 11 is electrically connected to the slave unit assembly 2, and the main auxiliary port 12 is used for electrical connection to external accessory devices. The slave unit assembly 2 includes a syringe barrel 21 and a syringe piston 22. The syringe barrel 21 has a material receiving cavity 211 and a material output port 212. One end of the syringe piston 22 is slidably mounted in the material receiving cavity 211 to push the injected material in the material receiving cavity 211 out of the material output port 212. The heating assembly 3 is disposed around the syringe barrel 21 and is electrically connected to the main controller.

[0032] It is easy to understand that in the above scheme, the heating component 3 is placed around the periphery of the syringe barrel 21, thereby enabling the heating of the material inside the syringe barrel 21 (i.e., the temperature of the heating component 3 is higher than the ambient temperature) or cooling (i.e., the temperature of the heating component 3 is lower than the ambient temperature). The heating component 3 is electrically connected to the main controller, allowing the main controller to adjust its temperature to further set the heating or cooling temperature of the material according to the user's experimental needs. This ensures that the material maintains the required temperature range during injection, thus meeting the temperature-sensitive process requirements such as microsphere preparation. Furthermore, the main controller of the main component 1 is connected to external accessory devices through the main sub-port 12, forming a multi-functional integrated system to meet more complex experimental requirements or usage needs.

[0033] Specifically, the external accessory device is set to one or more of the following: peristaltic pump, ultraviolet lamp, and flow meter, which can be selected according to actual experimental or usage requirements.

[0034] Specifically, there are several slave components 2; each slave component 2 includes two slave ports 20 electrically connected to the host controller. Taking a configuration of three slave components 2 as an example, the slave component 2 adjacent to the host component 1 has one slave port 20 electrically connected to the host port 11 of the host component 1, and the other is electrically connected to the slave port 20 of another adjacent slave component 2. The slave component 2 located between two slave components 2 has its two slave ports 20 electrically connected to the slave ports 20 of its two adjacent slave components 2. The slave component 2 located away from the host component 1 has one slave port 20 electrically connected to the slave port 20 of its adjacent slave component 2, and the other can be left unconnected. That is, the slave port 20 is electrically connected to the host port 11 and / or the slave port 20 of another adjacent slave component 2.

[0035] Of course, in other embodiments, the slave component 2 may also be provided with three, four or more slave ports 20 for connecting to other devices.

[0036] It is easy to understand that this setup enables multiple slave components 2 to be used in parallel with the master component 1, thereby allowing one master component 1 to control multiple slave components 2 simultaneously, meeting the needs of multi-task parallel processing.

[0037] It is worth noting that, in this embodiment, how the controller of the host component 1 specifically controls the temperature change of the heating component 3, and how the controller of the host component 1 specifically controls the multiple slave components 2, all depend on the circuit structure of the controller, the built-in program of the controller, and the program parameter settings. This is not an improvement point of this application, and the control scheme in the prior art can be directly adopted. For example, when controlling the temperature, the heating component 3 can be set as a heating element, and the temperature of the heating element can be controlled by adjusting the current passing through the heating element; the output amount of material can be controlled by controlling the running time of the slave components 2 through the controller.

[0038] See Figures 1 to 4 In order to ensure the stability of the connection between slave component 2 and master component 1, and between slave component 2 and slave component 2, in this embodiment, master component 1 and slave component 2 or two adjacent slave components 2 are detachably connected by connection component 4.

[0039] Specifically, the connecting component 4 includes a male latching end 41 and a female latching end 42 that can engage with each other; one of the male latching end 41 and the female latching end 42 of the connecting component 4 connecting the host component 1 and the slave component 2 is installed on the host component 1 and the other is located on the slave component 2; the connecting component 4 connecting two adjacent slave components 2 has its male latching end 41 and the female latching end 42 respectively installed on the two slave components 2.

[0040] Furthermore, among the mutually cooperating male and female latching ends 41 and 42, the male latching end 41 protrudes from the outer wall of the host assembly 1 or slave assembly 2; the female latching end 42 is located inside the slave assembly 2 or host assembly 1, and one side of the female latching end 42 is provided with an opening 5 for the male latching end 41 to extend into.

[0041] Taking the connecting component 4, which connects the host component 1 and the slave component 2, as an example, its female snap-fit ​​end 42 is fixedly installed on the inner wall of the housing of the host component 1, and the female snap-fit ​​end 42 has an opening 5 on one side; its male snap-fit ​​end 41 is fixedly installed on the inner wall of the housing of the slave component 2, and its male snap-fit ​​end 41 protrudes from the outer wall surface of the slave component 2. Thus, when the host component 1 and the slave component 2 are connected, it can extend into the host component 1 from the opening 5 and engage with the female snap-fit ​​end 42, thereby achieving a stable connection between the host component 1 and the slave component 2, and making the outer walls of the host component 1 and the slave component 2 fit together, thereby avoiding relative movement between the two sides, avoiding deformation of the connecting component 4, and further ensuring the stability of the connection between the host component 1 and the slave component 2.

[0042] Furthermore, the male and female latches 41 and 42 located on the same host component 1 or the same slave component 2 can be fixedly connected and fixedly connected to the housing of the corresponding host component 1 or slave component 2, thereby ensuring the stability of the connection component 4 itself during installation.

[0043] See Figures 1 to 9 The slave component 2 also includes a first fixing component 23, which includes a first base 231, a first limiting plate 232 and a pressure plate 233.

[0044] Specifically, the first base 231 has a groove for placing the syringe barrel 21; the first limiting plate 232 is fixedly installed on the side wall of the first base 231 by fasteners (such as screws) and can push the first plate 213 of the syringe barrel 21 against the first base 231. It is easy to understand that when the syringe barrel 21 is located in the groove, the first plate 213, which is fixedly connected to the syringe barrel 21, abuts against the first base 231 on one side and against the first limiting plate 232 on the other side, thereby achieving axial limiting of the syringe barrel 21.

[0045] Specifically, the pressure plate 233 is movably mounted on the first base 231 and, when the syringe barrel 21 is located within the groove, pushes the outer wall surface of the syringe barrel 21 to abut against the inner wall surface of the groove, thereby achieving radial limiting of the syringe barrel 21. It is worth noting that the pressure plate 233 can be connected to the telescopic end of the electric actuator, thereby driving the pressure plate 233 to move radially along the syringe barrel 21 (i.e.,...). Figure 3 and Figure 5 The Y direction and the opposite direction shown in the figure are not only convenient for replacing the syringe barrel 21, but also can be adapted to syringe barrels 21 of different diameters.

[0046] See Figure 6 The heating component 3 is configured as a semiconductor heating element electrically connected to the host controller; the semiconductor heating element is fixedly installed on the first base 231.

[0047] Specifically, in this embodiment, the semiconductor heating element is fixedly installed at the lower end of the first base 231 and conducts heat through the first base 231.

[0048] See Figures 1 to 9 The slave component 2 also includes a second fixing component 24 and a drive unit 25; the second fixing component 24 includes a second base 241 and a second limiting plate 242; the second base 241 is fixedly connected to the moving end of the drive unit 25; the second limiting plate 242 is mounted on the second base 241 and can push the second plate 221 at the end of the syringe piston 22 to abut against the second base 241.

[0049] It is easy to understand that one end face of the second plate 221 of the syringe piston 22 abuts against the second base 241, and the other end face abuts against the second limiting plate 242, thereby enabling the syringe piston 22 and the moving end of the drive unit 25 to be fixedly connected, so that the drive unit 25 can push the syringe piston 22 to move axially along the syringe barrel 21 to realize the ejection of material.

[0050] To enable the modular injection pump to deliver materials with high precision and ensure the stability and repeatability of material flow, in this embodiment, the drive unit 25 includes a stepper motor 251, a ball screw 252, a sliding seat 253, and a guide rod 254. The power output end of the stepper motor 251 is connected to the ball screw 252 to drive the ball screw 252 to rotate. The ball screw 252 is threadedly connected to the sliding seat 253. The sliding seat 253 is slidably mounted on the guide rod 254 and fixedly connected to the second base 241.

[0051] It should be understood that the sliding seat 253 is the moving end of the drive unit 25. When the stepper motor 251 drives the ball screw 252 to rotate, it can drive the sliding seat 253 and the second base 241 to slide synchronously along the guide rod 254. The stepper motor 251 is electrically connected to the host controller, which can then control the start and stop of the stepper motor 251 and its operating time.

[0052] Furthermore, the second base 241 and the second limiting plate 242 are connected by an adjustment assembly 6; the adjustment assembly 6 includes a connecting plate 61, a connecting post 62, a return spring 63, and an adjustment knob 64; the connecting plate 61 is located at the end of the second base 241 away from the second limiting plate 242, and is fixedly connected to the second limiting plate 242 by the connecting post 62; the connecting post 62 passes through the second base 241 and is slidably connected to the second base 241; the return spring 63 is coaxially arranged with the connecting post 62, and one end of the return spring 63 abuts or connects axially with the second base 241, and the other end abuts or connects axially with the connecting post 62; the adjustment knob 64 is threadedly connected to the connecting plate 61 and can be rotated to abut axially with the second base 241.

[0053] It is easy to understand that when the adjusting knob 64 is rotated in the preset direction until it abuts against the second base 241, continuing to rotate the adjusting knob 64 in the same direction will cause the connecting plate 61 to move away from the second base 241. This, in turn, will cause the second limiting plate 242 to move towards the second base 241 via the connecting post 62, thus limiting the second plate 221 of the syringe piston 22. When the adjusting knob 64 is rotated in the opposite direction, the adjusting knob 64 will no longer abut against the second base 241. At this point, continuing to rotate the adjusting knob 64 will cause the connecting plate 61, the connecting post 62, and the second limiting plate 242 to return to their initial state under the action of the return spring 63 (i.e., the connecting plate 61 abuts against the second base 241, while the distance between the second limiting plate 242 and the second base 241 is relatively the farthest), facilitating the disassembly of the syringe piston 22.

[0054] See Figure 1 and Figure 2 The host component 1 also includes a display 13 electrically connected to the host controller, the display 13 being mounted on the side of the host component 1 away from the slave component 2 via a bracket 7.

[0055] It is easy to understand that the display 13 is electrically connected to the host controller and supports human-computer interaction, making it easy for users to set device operating parameters and simplifying operation, thus lowering the barrier to entry.

[0056] It is worth noting that the interaction between the display 13 and the host controller is based on its built-in program and can be directly implemented using existing programs. This is not an improvement point of this application and will not be elaborated upon.

[0057] Furthermore, the bracket 7 is fixedly connected to the housing of the slave component 2, and the display 13 is rotatably mounted on the bracket 7, which allows for angle adjustment of the display 13 and facilitates user operation.

[0058] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A modular syringe pump, characterized by, It includes a host component (1) and a slave component (2); The host component (1) has a host controller, and a host port (11) and a host sub-port (12) electrically connected to the host controller. The host port (11) is electrically connected to the slave component (2), and the host secondary port (12) is used for electrical connection with external accessory devices; The slave assembly (2) includes a syringe barrel (21) and a syringe piston (22). The syringe barrel (21) has a material receiving cavity (211) and a material output port (212). One end of the syringe piston (22) is slidably installed in the material receiving cavity (211) to push the injection material in the material receiving cavity (211) out from the material output port (212). It also includes a heating component (3), which is disposed around the syringe barrel (21) and electrically connected to the host controller.

2. A modular syringe pump according to claim 1, wherein, The slave component (2) has several units; Each of the slave components (2) includes at least two slave ports (20) that are electrically connected to the host controller; The slave port (20) is electrically connected to the master port (11) and / or the slave port (20) of another adjacent slave component (2).

3. A modular syringe pump according to claim 2, wherein, The host component (1) and the slave component (2) or two adjacent slave components (2) are detachably connected by a connecting component (4); The connecting component (4) includes a snap-fit ​​male end (41) and a snap-fit ​​female end (42) that can engage with each other. The connecting component (4) that connects the host component (1) and the slave component (2) has one of its male snap-fit ​​end (41) and female snap-fit ​​end (42) installed on the host component (1) and the other located on the slave component (2); The connecting component (4) that connects two adjacent slave components (2) has its male snap-fit ​​end (41) and female snap-fit ​​end (42) respectively installed on the two slave components (2).

4. A modular syringe pump according to claim 3, wherein, In the mutually cooperating male end (41) and female end (42) of the latch, The male end (41) of the latch protrudes from the outer wall surface of the host assembly (1) or the slave assembly (2); The female latch (42) is located inside the slave assembly (2) or the host assembly (1), and the female latch (42) has an opening (5) on one side for the male latch (41) to extend into.

5. A modular syringe pump according to claim 1, wherein, The slave component (2) further includes a first fixing component (23), which includes a first base (231), a first limiting plate (232), and a pressure plate (233). The first base (231) is provided with a groove for placing the syringe barrel (21); the first limiting plate (232) is fixedly installed on the side wall of the first base (231) by fasteners and can push the first plate (213) of the syringe barrel (21) to abut against the first base (231); The pressure plate (233) is movably mounted on the first base (231) and can push the outer wall of the syringe barrel (21) to abut against the inner wall of the groove when the syringe barrel (21) is located in the groove.

6. A modular syringe pump according to claim 5, wherein, The heating component (3) is configured as a semiconductor heating element electrically connected to the host controller; The semiconductor heating element is fixedly installed on the first base (231).

7. A modular syringe pump according to claim 1 or 5, wherein, The slave component (2) also includes a second fixing component (24) and a drive unit (25); The second fixing component (24) includes a second base (241) and a second limiting plate (242); The second base (241) is fixedly connected to the moving end of the drive unit (25); The second limiting plate (242) is mounted on the second base (241) and can push the second plate (221) at the end of the syringe piston (22) to abut against the second base (241).

8. A modular syringe pump according to claim 7, wherein, The drive unit (25) includes a stepper motor (251), a ball screw (252), a sliding seat (253), and a guide rod (254). The power output end of the stepper motor (251) is connected to the ball screw (252) to drive the ball screw (252) to rotate; The ball screw (252) is threadedly connected to the sliding seat (253); The sliding seat (253) is slidably mounted on the guide rod (254) and fixedly connected to the second base (241).

9. A modular syringe pump according to claim 7, wherein, The second base (241) and the second limiting plate (242) are connected by an adjustment component (6); The adjustment assembly (6) includes a connecting plate (61), a connecting post (62), a return spring (63), and an adjustment knob (64). The connecting plate (61) is located at the end of the second base (241) away from the second limiting plate (242), and is fixedly connected to the second limiting plate (242) through the connecting post (62); The connecting column (62) passes through the second base (241) and is slidably connected to the second base (241); The reset spring (63) is coaxially arranged with the connecting post (62), and one end of the reset spring (63) is axially abutted or connected to the second base (241), and the other end is axially abutted or connected to the connecting post (62). The adjustment knob (64) is threadedly connected to the connecting plate (61) and can be rotated to axially abut against the second base (241).

10. A modular syringe pump according to claim 1, wherein, The external accessory device is configured as one or more of a peristaltic pump, an ultraviolet lamp, and a flow meter; And / or, The host component (1) also includes a display (13) electrically connected to the host controller, the display (13) being mounted on the side of the host component (1) away from the slave component (2) via a bracket (7); The bracket (7) is fixedly connected to the housing of the slave component (2), and the display (13) is rotatably mounted on the bracket (7).

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