Reagent storage rack
By integrating the detection sensor and lamp bead prompt function on the reagent storage rack, as well as the fixing device for clamping the assembly, the lack of prompt and fixing problems of the reagent storage rack is solved, and work efficiency and safety are improved.
Patent Information
- Application Number
- CN202323540926.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-25
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2033-12-25
AI Technical Summary
The existing reagent storage rack lacks prompt function and clamping positioning device, which makes it easy for staff to reuse or skip used or unused reagent bottles after long working hours, reducing work efficiency.
A reagent storage rack including a storage detection device, a lamp bead and a clamping assembly is designed. The position change of the reagent bottle is detected by the detection sensor. The lamp bead prompts the use status, and the reagent bottle is fixed by the clamping assembly to ensure its secure position.
It effectively avoids the mistaken placement of the reagent bottle, improves the work efficiency of the staff, and enhances the fixing safety of the reagent bottle to prevent tilting or collapse.
Smart Images

Figure CN222131967U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of reagent storage racks, and specifically relates to a reagent storage rack. Background Art
[0002] Laboratories or hospitals usually store reagents in reagent bottles. If there are many reagent bottles, they can be stored centrally on storage racks, which makes it convenient for staff to take and place the reagents in the reagent bottles when conducting tests.
[0003] However, the existing storage racks lack a reminder function, and multiple reagent bottles are placed on one storage rack. If the staff is physically and mentally exhausted after working for a long time, they will reuse the reagent bottles that have been used or tested, or skip the reagent bottles that have not been used and tested, which reduces the work efficiency of the staff. In the prior art, by adding a pressure detection device to detect the weight of the reagent bottle, it can be prompted whether the reagent bottle on the storage rack is filled with liquid, which plays a better reminder role for the staff. However, the existing storage racks do not have a good clamping and positioning device to clamp and position the reagent bottles. Utility Model Content
[0004] The utility model provides a reagent storage rack, which solves the problem that the reagent storage rack in the related art lacks a prompt function.
[0005] The technical solution of the utility model is as follows:
[0006] A reagent storage rack comprises: a storage rack body, a storage detection device, wherein the storage detection device comprises: a storage slot, the storage slot is arranged on the storage rack body, and the storage slot is used to store the reagent bottle body.
[0007] A detection sensor is slidably disposed in the storage groove, and the detection sensor is used to detect whether the reagent bottle body is located in the storage groove.
[0008] an elastic component, the elastic component being arranged in the receiving groove, the elastic component being used to provide a force for the detection sensor to slide and reset in the receiving groove,
[0009] A lamp bead is located at one side of the storage slot, and the lamp bead is arranged on the storage rack body. In one of the storage detection devices, when the detection sensor detects that the position state of the reagent bottle body and the storage slot changes, the display state of the lamp bead changes.
[0010] A clamping assembly, the clamping assembly is arranged on one side of the receiving groove, the clamping assembly is used to locate the height of the detection sensor in the receiving groove, and the clamping assembly includes:
[0011] A positioning member is slidably disposed on the storage rack body. When the positioning member slides into the storage slot, it is used to position the height of the detection sensor in the storage slot and is also used to squeeze and position the reagent bottle body in the storage slot.
[0012] Furthermore, it also includes:
[0013] There are multiple storage detection devices, and the multiple storage detection devices are all arranged on the storage rack body.
[0014] Furthermore, the elastic component comprises:
[0015] A pressing plate, the pressing plate is cylindrical, the pressing plate slides up and down along the receiving groove, the detection sensor is arranged on the pressing plate, and the detection end of the detection sensor is opposite to the reagent bottle body,
[0016] A first compression spring, wherein the first compression spring is arranged in the receiving groove, one end of the first compression spring is connected to the lower end of the pressure plate, and the other end of the first compression spring is arranged on the inner wall of the receiving groove, for providing force for resetting the pressure plate and the detection sensor.
[0017] Furthermore, the clamping assembly further comprises:
[0018] The positioning member has a plurality of
[0019] There are multiple guide grooves, and the multiple guide grooves are all connected to the receiving groove. The multiple guide grooves are arranged in an array on the side of the receiving groove along the height direction of the receiving groove, and a positioning member is slidably arranged in each guide groove.
[0020] Furthermore, the clamping assembly further comprises:
[0021] A mounting groove, the mounting groove is arranged on the side of the storage groove,
[0022] A mounting plate, wherein the mounting plate is slidably disposed in the mounting groove along a sliding direction of the positioning member,
[0023] There are multiple second compression springs, one end of each positioning member is connected to a second compression spring, and all the second compression springs are arranged on the mounting plate.
[0024] Furthermore, it also includes:
[0025] A regulating device, the regulating device is used to drive the mounting plate to slide, and the regulating device comprises:
[0026] A rotating shaft is rotatably arranged on the storage rack body, and has a plurality of threaded parts. One threaded part is arranged in each mounting groove. The mounting plate is threadedly connected with the threaded part. The rotating shaft is used to drive the mounting plate to approach or move away from the storage groove.
[0027] Furthermore, it also includes:
[0028] The positioning member has a base and a tightening portion, one end of the second compression spring is connected to the base, the tightening portion abuts against the side of the reagent bottle body for positioning the reagent bottle, and the base or the tightening portion is clamped on the upper side of the pressure plate for positioning the pressure plate.
[0029] Furthermore, it also includes:
[0030] The tightening part is inserted and arranged on the base, and the tightening part is made of rubber material.
[0031] Furthermore, it also includes:
[0032] The tightening portion is an isosceles trapezoidal structure. When the base is in the guide groove and the tightening portion is located above the pressure plate, under the resetting action of the first compression spring, the pressure plate pushes the positioning member into the guide groove along the inclined side surface of the tightening portion.
[0033] The beneficial effects of the utility model are:
[0034] 1. The detection sensor can detect the presence of the reagent bottle body and prompt the staff through the state change of the lamp bead to prevent the staff from taking or putting the wrong reagent bottle body.
[0035] 2. The clamping assembly firmly fixes the reagent bottle body in the storage slot to prevent the reagent bottle body from tilting or falling, thereby improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS
[0036] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0037] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0038] Figure 2 This is a schematic diagram of the top view structure of the utility model;
[0039] Figure 3 for Figure 2 AA-direction cross-sectional structural diagram;
[0040] Figure 4 for Figure 3 A local enlarged schematic diagram of point I in the middle;
[0041] Figure 5 for Figure 4 A partial enlarged schematic diagram of position II in the middle;
[0042] Figure 6 This is a schematic diagram of the internal structure of the storage slot when the reagent tube body is placed in the utility model;
[0043] Figure 7 for Figure 6 A partial enlarged schematic diagram of point III in the middle;
[0044] In the figure, 1. storage rack body; 2. storage detection device; 3. storage slot; 4. detection sensor; 5. elastic component; 6. lamp bead; 7. clamping component; 8. positioning member; 9. pressure plate; 10. first compression spring; 11. guide groove; 12. mounting groove; 13. mounting plate; 14. second compression spring; 15. regulating device; 16. rotating shaft; 17. base; 18. tightening part; 19. threaded part. DETAILED DESCRIPTION
[0045] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0046] like Figure 1 to Figure 7 As shown, this embodiment proposes a reagent storage rack, including: a storage rack body 1, a storage detection device 2, the storage detection device 2 includes: a storage slot 3, the storage slot 3 is arranged on the storage rack body 1, and the storage slot 3 is used to store the reagent bottle body.
[0047] A detection sensor 4 is slidably disposed in the storage slot 3, and the detection sensor 4 is used to detect whether the reagent bottle body is located in the storage slot 3.
[0048] An elastic component 5, wherein the elastic component 5 is disposed in the receiving groove 3, and the elastic component 5 is used to provide a force for the detection sensor 4 to slide and reset in the receiving groove 3,
[0049] The lamp bead 6 is located at one side of the storage slot 3, and the lamp bead 6 is arranged on the storage rack body 1. In one of the storage detection devices 2, when the detection sensor 4 detects that the position state of the reagent bottle body and the storage slot 3 changes, the display state of the lamp bead 6 changes.
[0050] A clamping assembly 7, the clamping assembly 7 is arranged on one side of the receiving groove 3, the clamping assembly 7 is used to locate the height of the detection sensor 4 in the receiving groove 3, and the clamping assembly 7 includes:
[0051] A positioning member 8 is slidably disposed on the storage rack body 1 , and when the positioning member 8 slides into the storage slot 3 , it is used to position the height of the detection sensor 4 in the storage slot 3 , and is also used to squeeze and position the reagent bottle body in the storage slot 3 .
[0052] In this embodiment, the storage rack body 1 has a cooling function. When the reagent bottle body is placed therein, it can provide a cooling function of 2°C to 8°C for the reagent in the reagent bottle body. The storage rack body 1 is a prior art, which is not described in detail in this embodiment, and the cooling device of the storage rack body 1 is not shown in the attached drawings; the storage detection device 2 includes: a storage slot 3, a detection sensor 4, an elastic component 5, a lamp bead 6, and a clamping component 7. A cylindrical storage slot 3 is dug out on the storage rack body 1. The height of the storage slot 3 is less than the height of the storage rack body 1, and the inner diameter of the storage slot 3 is greater than the outer diameter of the reagent bottle body, so that the reagent bottle body can be placed in the storage slot 3; the detection sensor 4 can be a pressure sensor, and the detection sensor 4 slides up and down in the storage slot 3 along the height direction of the storage rack body 1; the elastic component 5 is located below the detection sensor 4. Assuming that there is no reagent bottle body in the storage slot 3, at this time, the elastic component 5 is in a relaxed state. The staff wants to put a reagent bottle body into the storage slot 3. First, press the power switch on the storage rack body 1. At this time, all electrical components on the storage rack body 1 are energized. Since there is no reagent bottle body in the storage slot 3, the detection sensor 4 cannot recognize the pressure and will transmit a pressure-free signal to the signal receiver set in the storage rack body 1. After receiving this signal and processing it, the signal receiver will make the lamp bead 6 set on one side of the storage slot 3 start to flash. When the staff holds the reagent bottle body and aligns it with the storage slot, the detection sensor 4 will not recognize the pressure. When the reagent bottle is placed in the storage slot 3, the elastic component 5 receives pressure, and is lowered and compressed along the height of the storage rack body 1. The detection sensor 4 also slides downward in the storage slot 3 and transmits a pressure signal to the signal receiver. After the pressure signal is processed by the signal receiver, the signal receiver stops the lamp bead 6 set on one side of the storage slot 3 from flashing, and then drives the clamping component 7 to make the positioning member 8 press the outer wall of the reagent bottle body, and the positioning member 8 will also fix the detection sensor 4 at the height of the storage slot 3 to prevent the elastic component 5 from rebounding after the human hand is evacuated, so as to ensure that the reagent bottle body is firmly fixed. Give reminders and stably clamp the reagent bottle body when the staff is working.
[0053] Furthermore, it also includes:
[0054] There are multiple storage detection devices 2, and the multiple storage detection devices 2 are all arranged on the storage rack body 1.
[0055] In this embodiment, there are multiple storage detection devices 2, so that the application scope of the device is expanded.
[0056] Further, the elastic component 5 includes:
[0057] The pressing plate 9 is cylindrical and slides up and down along the receiving groove 3. The detection sensor 4 is arranged on the pressing plate 9. The detection end of the detection sensor 4 is opposite to the reagent bottle body.
[0058] The first compression spring 10 is arranged in the receiving groove 3, one end of the first compression spring 10 is connected to the lower end of the pressure plate 9, and the other end of the first compression spring 10 is arranged on the inner wall of the receiving groove 3, for providing force for resetting the pressure plate 9 and the detection sensor 4.
[0059] In this embodiment, the elastic component 5 includes: a pressing plate 9 and a first compression spring 10. The pressing plate 9 is cylindrical, and the outer diameter of the pressing plate 9 is the same as the inner diameter of the storage slot 3. The pressing plate 9 slides up and down in the storage slot 3 along the height direction of the storage rack body 1. The detection sensor 4 is arranged at the upper end of the pressing plate 9, and the detection sensor 4 is opposite to the lower end of the reagent bottle body. If the staff wants to put the reagent bottle body into the storage slot 3, they hold the reagent bottle body and press the reagent bottle body downward when the opening of the storage slot 3 is aligned. At this time, the first compression spring 10 is subjected to pressure to produce elastic deformation and compress downward, so that the pressing plate 9 drives the detection sensor 4 to slide downward, so that the reagent bottle body slides downward into the storage slot 3. The first compression spring 10 makes the reagent bottle body have elastic buffering when it is placed in the storage slot 3, preventing the bottom of the reagent bottle body from directly colliding with the bottom of the storage slot 3, and avoiding damage to the reagent bottle body due to collision.
[0060] Furthermore, the clamping assembly 7 further comprises:
[0061] The positioning member 8 has a plurality of
[0062] There are multiple guide grooves 11, and the multiple guide grooves 11 are all connected to the receiving groove 3. The multiple guide grooves 11 are arranged in an array along the height direction of the receiving groove 3 on the side of the receiving groove 3, and a positioning member 8 is slidably arranged in each guide groove 11.
[0063] In this embodiment, the positioning member 8 has multiple guide grooves 11. Multiple guide grooves 11 are arranged in an array on one side of each storage groove 3. Each guide groove 11 is connected to the storage groove 3. The positioning member 8 slides in the guide groove 11 along the length direction of the storage rack body 1, so that the reagent bottle body in each storage groove 3 can be well fixed, further enhancing the stability of the device for fixing the reagent bottle body; and the height of each detection sensor 4 in the storage groove 3 is stably fixed, avoiding the detection sensor 4 from being pushed out by the first compression spring 10, making the detection more accurate.
[0064] Furthermore, the clamping assembly 7 further comprises:
[0065] The mounting groove 12 is arranged on the side of the storage groove 3.
[0066] The mounting plate 13 is slidably disposed in the mounting groove 12 along the sliding direction of the positioning member 8.
[0067] There are multiple second compression springs 14 , one end of each positioning member 8 is connected to a second compression spring 14 , and all the second compression springs 14 are arranged on the mounting plate 13 .
[0068] In this embodiment, the clamping assembly 7 also includes: a mounting groove 12, a mounting plate 13, and a second compression spring 14. The mounting groove 12 is rectangular in shape, and the height of the mounting groove 12 is the same as the height of the storage groove 3; the mounting plate 13 is rectangular, and the mounting plate 13 slides in the storage groove 3; when the reagent bottle body needs to be fixed in the storage groove 3, it is necessary to drive the mounting plate 13 so that the mounting plate 13 approaches the side of the storage groove 3. In this process, the positioning member 8 passes through the guide groove 11. When the positioning member 8 contacts the outer wall of the reagent bottle body, the mounting plate 13 is driven to continue to slide to the side of the storage groove 3. At this time, the second compression spring 14 is subjected to pressure to produce elastic compression. When the mounting plate 13 cannot be driven, the reagent bottle body is fixed in the storage groove 3 and fixed firmly. The reagent bottle body is fixed firmly, and when the storage rack body 1 is tilted, the reagent bottle body will not be separated from the storage groove 3, thereby increasing the safety of the device.
[0069] Furthermore, it also includes:
[0070] A regulating device 15, the regulating device 15 is used to drive the mounting plate 13 to slide, and the regulating device 15 includes:
[0071] The rotating shaft 16 is rotatably arranged on the storage rack body 1, and has a plurality of threaded portions 19, one threaded portion 19 is arranged in each mounting groove 12, the mounting plate 13 is threadedly connected to the threaded portion 19, and the rotating shaft 16 is used to drive the mounting plate 13 to approach or move away from the storage groove 3.
[0072] In this embodiment, the mounting plate 13 is driven by a regulating device 15, which is a rotating shaft 16, and a plurality of threaded portions 19 are arranged on the rotating shaft 16 in sequence along the axial direction of the rotating shaft 16, and the length of each threaded portion 19 is the width of a mounting groove 12, and a mounting groove 12 corresponds to a section of threaded portion 19. The rotating shaft 16 can be driven by a driving motor. When the driving motor is set to rotate forward, all the mounting plates 13 slide toward the side close to the storage groove 3, so that the reagent bottle body in each storage groove 3 is clamped. When the driving motor is reversed, all the mounting plates 13 slide toward the side away from the storage groove 3, so that the reagent bottle body in each storage groove 3 is released, thereby avoiding the need for manpower to clamp the reagent bottle body in each storage groove 3 one by one, saving manpower and improving the work efficiency of the staff.
[0073] Furthermore, it also includes:
[0074] The positioning member 8 has a base 17 and a tightening portion 18, one end of the second compression spring 14 is connected to the base 17, and the tightening portion 18 abuts against the side of the reagent bottle body for positioning the reagent bottle. The base 17 or the tightening portion 18 is clamped on the upper side of the pressure plate 9 for positioning the pressure plate 9.
[0075] In this embodiment, the positioning member 8 has: a base 17 and a tightening portion 18. The positioning member 8 is connected to the base 17 by the second compression spring 14 and is arranged on the mounting plate 13. When the reagent bottle body is placed in the storage groove 3, the pressing plate 9 is subjected to downward pressure, the first compression spring 10 produces elastic deformation and is compressed downward, the pressing plate 9 slides downward in the storage groove 3, and then drives the clamping assembly 7, the mounting plate 13 slides along the length direction of the storage rack body 1 close to the storage groove 3, when the positioning member 8 passes out of the guide groove 11, the tightening portion 18 contacts the outer wall of the reagent bottle body, and the reagent bottle body is firmly fixed in the storage groove 3; the spacing between the two positioning members 8 is the thickness of the pressing plate 9, when the pressing plate 9 is between the two positioning members 8, the tightening portion 18 or the base 17 of the positioning member 8 clamps the pressing plate 9, and at this time, even if the pressing plate 9 is subjected to more pressure, it will not slide downward. In summary, at this time, the reagent bottle body is fixed. The firmness of the fixation is guaranteed.
[0076] Furthermore, it also includes:
[0077] The tightening portion 18 is inserted into the base 17 and is made of rubber.
[0078] In this embodiment, the tightening part 18 is plug-in connected to the base 17, and the plug-in structure is simple. It is a prior art and is not described in detail in this embodiment and is not shown in the accompanying drawings. The tightening part 18 is easy to replace, and the material of the tightening part 18 is rubber. When the tightening part 18 presses against the reagent bottle body, it has a buffering effect to avoid damage to the reagent bottle body, thereby improving the safety of the device.
[0079] Furthermore, it also includes:
[0080] The tightening portion 18 is an isosceles trapezoidal structure. When the base 17 is located in the guide groove 11 and the tightening portion 18 is located above the pressure plate 9, under the resetting action of the first compression spring 10, the pressure plate 9 pushes the positioning member 8 into the guide groove 11 along the inclined side surface of the tightening portion 18.
[0081] In this embodiment, when the reagent bottle body in the storage slot 3 needs to be released, the rotating shaft 16 is driven in the reverse direction to make the mounting plate 13 slide in the mounting slot 12, and the mounting plate 13 is away from the storage slot 3. When the positioning member 8 and the pressing plate 9 are in contact but not separated, the driving rotation is stopped. At this time, the reagent bottle body is released, the first compression spring 10 restores the deformation, and pops up. The pressing plate 9 squeezes the hypotenuse of the pressing part 18 to make the pressing part 18 retreat into the guide groove 11, so that the pressing plate 9 slides upward in the storage slot 3. The pressing plate 9 can slide freely in the storage slot 3, saving manpower and improving the work efficiency of the staff.
[0082] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A reagent storage rack, characterized in that: include: The storage rack body (1) is characterized in that it also includes: a storage detection device (2), the storage detection device (2) includes: a storage groove (3), the storage groove (3) is arranged on the storage rack body (1), and the storage groove (3) is used to store the reagent bottle body. A detection sensor (4), wherein the detection sensor (4) is slidably disposed in the storage groove (3), and the detection sensor (4) is used to detect whether the reagent bottle body is located in the storage groove (3). an elastic component (5), the elastic component (5) being arranged in the receiving groove (3), the elastic component (5) being used to provide a force for the detection sensor (4) to slide and reset in the receiving groove (3), A lamp bead (6), the lamp bead (6) is located on one side of the storage slot (3), the lamp bead (6) is arranged on the storage rack body (1), and in one of the storage detection devices (2), when the detection sensor (4) detects that the position state of the reagent bottle body and the storage slot (3) changes, the display state of the lamp bead (6) changes, A clamping assembly (7), the clamping assembly (7) being arranged on one side of the receiving groove (3), the clamping assembly (7) being used to locate the height of the detection sensor (4) in the receiving groove (3), the clamping assembly (7) comprising: A positioning member (8), wherein the positioning member (8) is slidably disposed on the storage rack body (1); when the positioning member (8) slides into the storage groove (3), it is used to position the height of the detection sensor (4) in the storage groove (3), and is also used to squeeze and position the reagent bottle body in the storage groove (3).
2. A reagent storage rack according to claim 1, characterized in that: Also includes: There are a plurality of the storage detection devices (2), and the plurality of the storage detection devices (2) are all arranged on the storage rack body (1).
3. A reagent storage rack according to claim 2, characterized in that: The elastic component (5) comprises: A pressing plate (9), the pressing plate (9) is cylindrical, the pressing plate (9) slides up and down along the receiving groove (3), the detection sensor (4) is arranged on the pressing plate (9), and the detection end of the detection sensor (4) is opposite to the reagent bottle body, A first compression spring (10), wherein the first compression spring (10) is arranged in the receiving groove (3), one end of the first compression spring (10) is connected to the lower end of the pressure plate (9), and the other end of the first compression spring (10) is arranged on the inner wall of the receiving groove (3), and is used to provide a force for resetting the pressure plate (9) and the detection sensor (4).
4. A reagent storage rack according to claim 3, characterized in that: The clamping assembly (7) further comprises: The positioning member (8) has a plurality of The guide groove (11) has a plurality of guide grooves (11), each of which is connected to the receiving groove (3), and each of which is arranged in an array on the side of the receiving groove (3) along the height direction of the receiving groove (3), and each of which is slidably provided with a positioning member (8).
5. A reagent storage rack according to claim 4, characterized in that: The clamping assembly (7) further comprises: A mounting groove (12), wherein the mounting groove (12) is arranged on the side of the storage groove (3), a mounting plate (13), wherein the mounting plate (13) is slidably disposed in the mounting groove (12) along a sliding direction of the positioning member (8), There are a plurality of second compression springs (14), one end of each positioning member (8) is connected to a second compression spring (14), and all the second compression springs (14) are arranged on the mounting plate (13).
6. A reagent storage rack according to claim 5, characterized in that: Also includes: A regulating device (15), the regulating device (15) is used to drive the mounting plate (13) to slide, and the regulating device (15) comprises: A rotating shaft (16) is rotatably arranged on the storage rack body (1), and a plurality of threaded portions (19) are provided on the rotating shaft (16). One threaded portion (19) is provided in each mounting groove (12), and the mounting plate (13) is threadedly connected to the threaded portion (19). The rotating shaft (16) is used to drive the mounting plate (13) to approach or move away from the storage groove (3).
7. A reagent storage rack according to claim 6, characterized in that: Also includes: The positioning member (8) comprises a base (17) and a tightening portion (18); one end of the second compression spring (14) is connected to the base (17); the tightening portion (18) abuts against the side of the reagent bottle body to position the reagent bottle; the base (17) or the tightening portion (18) is clamped on the upper side of the pressure plate (9) to position the pressure plate (9).
8. A reagent storage rack according to claim 7, characterized in that: Also includes: The tightening portion (18) is inserted into the base (17), and the tightening portion (18) is made of rubber.
9. A reagent storage rack according to claim 8, characterized in that: Also includes: The tightening portion (18) is an isosceles trapezoidal structure. When the base (17) is in the guide groove (11) and the tightening portion (18) is located above the pressure plate (9), under the reset action of the first compression spring (10), the pressure plate (9) pushes the positioning member (8) into the guide groove (11) along the inclined side surface of the tightening portion (18).
