Physical examination sample collection box

By designing the combination of rotating plate, pulling ring, pressing cylinder and transmission mechanism, the problem that the sample collection box cannot be tilted and adapted to different heights in the prior art is solved, and the stable and convenient placement of samples is achieved.

CN120288374AInactive Publication Date: 2025-07-11ZHENGZHOU UNIV
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202510598529.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-09
Publication Date
2025-07-11
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

In the prior art, the physical examination sample collection box cannot be placed inclined classification and placement of samples, and cannot be adapted to placement of samples at different heights.

Method used

A physical examination sample collection box is designed. Through the combination of the rotating plate mechanism, the pulling ring mechanism, the pressing cylinder mechanism, the connecting rod mechanism and the transmission mechanism, the inclination classification of the samples and the placement of different heights are realized. The closing of the rotating plate mechanism and the limit of the pulling ring mechanism are used, combined with the height change of the pressing cylinder mechanism and the position change of the connecting rod mechanism, the position change of the placement frame is driven by the transmission mechanism to adapt to the placement of samples of different heights.

Benefits of technology

The tilt classification of samples is realized and the placement of different heights is adapted to avoid sample shaking and improve the convenience and stability of sample collection.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN120288374A_ABST
    Figure CN120288374A_ABST
Patent Text Reader

Abstract

The invention discloses a physical examination sample collection box, and relates to the technical field of physical examination sample collection, the physical examination sample collection box comprises a box body, the box body is provided with a rotating plate mechanism, the rotating plate mechanism is fixedly connected with a pull ring mechanism, the box body is fixedly connected with a hook at a position corresponding to the pull ring mechanism, the box body is rotatably connected with a pressing cylinder mechanism, and the pressing cylinder mechanism is rotatably connected with a rotating ring; the rotating ring is fixedly connected with a plurality of connecting rod mechanisms, the inner side wall of the box body is fixedly connected with a first rotating seat, a placing frame mechanism is arranged between the first rotating seat and the connecting rod mechanisms, a transmission mechanism is arranged on the placing frame mechanism, and a pressure plate mechanism is arranged at the bottom of the box body. Closing of the rotating plate mechanism can be achieved through the pull ring mechanism and the hook, then loosening of the rotating plate mechanism is avoided, height change of the rotating ring can be achieved when the rotating plate mechanism is closed through the pressing cylinder mechanism, then the position of the connecting rod mechanism is changed, and the dip angle of the placing frame mechanism is changed.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to the technical field of physical examination sample collection, and specifically to a physical examination sample collection box. Background Art

[0002] Health check-up is to conduct physical examinations using medical means and methods, including basic examinations in various clinical departments, such as medical equipment examinations like ultrasound, electrocardiogram, and radiology, as well as laboratory examinations of human blood, urine, and feces. Health check-up is a physical examination centered on health. Generally, medical experts believe that a health check-up refers to a comprehensive examination of the body when there are no obvious diseases yet.

[0003] In the prior art, through the settings of a clamping component, a transmission structure, and a movable component, after the user turns the physical examination sample test tube into the placement hole, the bottom end will insert into the insertion hole and push the movable component, pushing the movable component towards both ends. Through the transmission structure, the clamping components can approach each other and clamp on both sides of the test tube. After the test tube is completely placed in the bracket, the clamping component and the movable component can respectively clamp and fix the top end and the middle part of the test tube, thereby preventing the test tube from shaking, and this structure can clamp test tubes with different diameters, making it more convenient to use when collecting different physical examination samples. However, in the prior art, the samples cannot be placed in an inclined and classified manner, and at the same time, it cannot adapt to the placement of samples with different heights. Therefore, there is a large room for improvement in the prior art. Summary of the Invention

[0004] The present invention provides a physical examination sample collection box, which solves the problems raised in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A physical examination sample collection box includes a box body. A rotating plate mechanism is provided on the box body. The rotating plate mechanism is fixedly connected to a pull ring mechanism. A hook is fixedly connected to the box body at a position corresponding to the pull ring mechanism. The box body is rotatably connected to a pressing cylinder mechanism. The pressing cylinder mechanism is rotatably connected to a rotating ring. The rotating ring is fixedly connected to a plurality of connecting rod mechanisms. A first rotating seat is fixedly connected to the inner side wall of the box body. A placement rack mechanism is placed between the first rotating seat and the connecting rod mechanisms. A transmission mechanism is provided on the placement rack mechanism. A pressing plate mechanism is provided at the bottom of the box body; the pull ring mechanism and the hook are used to limit the rotating plate mechanism. The pressing cylinder mechanism is used to change the position of the connecting rod mechanism. The pressing cylinder mechanism is used to drive the pressing plate mechanism to rotate. The pressing plate mechanism is used to drive the transmission mechanism. The transmission mechanism is used to drive the position change of the placement rack mechanism to adapt to the placement of samples with different heights.

[0007] As a preferred technical solution of the present invention, the rotating plate mechanism includes a cover plate rotating seat fixed to the side of the box body. The cover plate rotating seat is rotatably connected to a cover plate rotating shaft, and the cover plate rotating shaft is fixedly connected to a cover plate. A sealing strip is fixedly connected to the inner side of the cover plate. A sealing groove is provided above the box body, and a holding handle is provided on the top of the cover plate.

[0008] As a preferred technical solution of the present invention, the pull ring mechanism includes a telescopic rod rotating seat fixed to the cover plate. The telescopic rod rotating seat is rotatably connected to a telescopic rod, and one end of the telescopic rod away from the telescopic rod rotating seat is fixedly connected to a pull ring.

[0009] As a preferred technical solution of the present invention, the telescopic rod includes a telescopic sleeve rotatably connected to the cover plate rotating seat. A first spring is fixedly connected inside the telescopic sleeve. One end of the first spring away from the telescopic sleeve is fixedly connected to a first slider. The first slider is slidably connected to the telescopic sleeve. The first slider is fixedly connected to a first sliding rod, and the first sliding rod passes through the telescopic sleeve and is slidably connected to the telescopic sleeve.

[0010] As a preferred technical solution of the present invention, the pressing cylinder mechanism includes a rotating shaft rotatably connected to the box body. One end of the rotating shaft away from the box body is fixedly connected to a second slider. The second slider is fixedly connected to a second spring. One end of the second spring away from the second slider is fixedly connected to a pressing cylinder, and the pressing cylinder is rotatably connected to a rotating ring.

[0011] As a preferred technical solution of the present invention, the connecting rod mechanism includes a second rotating seat fixed to the rotating ring. The second rotating seat is rotatably connected to a connecting sleeve. A third spring is fixedly connected inside the connecting sleeve. One end of the third spring away from the connecting sleeve is fixedly connected to a third slider. One side of the third slider away from the third spring is fixedly connected to a connecting rod. The connecting rod passes through the connecting sleeve and is slidably connected to the connecting sleeve. The connecting rod is rotatably connected to a connecting shaft.

[0012] As a preferred technical solution of the present invention, the placement rack mechanism includes a placement rack provided between the first rotating seat and the connecting shaft. The placement rack is rotatably connected to the first rotating seat and the connecting shaft. The placement rack is rotatably connected to a threaded rod. The threaded rod is threadedly connected to a threaded sleeve. The threaded sleeve is fixedly connected to a lifting plate. The lifting plate is slidably connected to the placement rack. One side of the lifting plate away from the threaded sleeve is fixedly connected to a plurality of placement sleeves, and a plurality of insertion holes are provided at positions corresponding to the placement sleeves on the placement rack.

[0013] As a preferred technical solution of the present invention, the transmission mechanism includes a first bevel gear fixedly connected to the threaded rod. The first bevel gear meshes with a second bevel gear. The second bevel gear is fixedly connected to a gear shaft. The gear shaft is rotatably connected to a gear shaft seat, and the gear shaft seat is fixed to the placement rack. One end of the gear shaft away from the second bevel gear is fixedly connected to a connecting wheel.

[0014] As a preferred technical solution of the present invention, the pressing plate mechanism includes a fourth spring fixed to the bottom inside of the box body. One end of the fourth spring away from the box body is fixedly connected to a connecting ring, the connecting ring is rotatably connected to the pressing plate, the pressing plate contacts the connecting wheel, the rotating shaft passes through the axis of the pressing plate, a slide bar is provided in the axial direction of the rotating shaft, a chute is provided in the pressing plate, and the slide bar passes through the chute.

[0015] The present invention has the following beneficial effects: The present invention can close the box body through the rotation plate mechanism, can realize the closing of the rotation plate mechanism through the pull ring mechanism and the hook, thereby avoiding the loosening of the rotation plate mechanism. Through the pressing cylinder mechanism, when the rotation plate mechanism is closed, the height of the rotating ring can be changed, and then the position of the connecting rod mechanism can be changed, so that the inclination angle of the placement rack mechanism can be changed. Through the pressing plate mechanism, the transmission mechanism can be driven, and the transmission mechanism can drive the position change of the placement rack mechanism, which can adapt to the placement of samples at different heights. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of a physical examination sample collection box.

[0017] Figure 2 It is a schematic structural diagram of the second perspective of the physical examination sample collection box.

[0018] Figure 3 It is a cross-sectional view of the rotating ring groove in the physical examination sample collection box.

[0019] Figure 4 For Figure 3 The partial enlarged view of area A in

[0020] Figure 5 It is a cross-sectional view of the telescopic rod in the physical examination sample collection box.

[0021] In the figure: 1. Box body; 2. Rotating plate mechanism; 201. Cover plate rotating seat; 202. Cover plate rotating shaft; 203. Cover plate; 204. Sealing strip; 205. Sealing groove; 206. Holding handle; 3. Pull ring mechanism; 301. Expansion rod rotating seat; 302. Expansion rod; 3021. Telescopic sleeve; 3022. First spring; 3023. First slider; 3024. First slide bar; 303. Pull ring; 4. Hook; 5. Pressing cylinder mechanism; 501. Rotating shaft; 502. Second slider; 503. Second spring; 504. Pressing cylinder; 6. Rotating ring; 7. Connecting rod mechanism; 701. Second rotating seat; 702. Connecting sleeve; 703. Third spring; 704. Third slider; 705. Connecting rod; 706. Connecting shaft; 8. First rotating seat; 9. Placing rack mechanism; 901. Placing rack; 902. Threaded rod; 903. Threaded sleeve; 904. Lifting plate; 905. Placing sleeve; 906. Insertion hole; 10. Transmission mechanism; 1001. First bevel gear; 1002. Second bevel gear; 1003. Gear shaft; 1004. Gear shaft seat; 1005. Connecting wheel; 11. Pressing disc mechanism; 1101. Fourth spring; 1102. Connecting ring; 1103. Pressing disc; 1104. Slide bar. Detailed implementation mode

[0022] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustration and explanation of the present invention, and are not used to limit the present invention.

[0023] Embodiment 1

[0024] Please refer to Figures 1-5 , a physical examination sample collection box, including a box body 1, a rotating plate mechanism 2 is provided on the box body 1, the rotating plate mechanism 2 is fixedly connected to a pull ring mechanism 3, a hook 4 is fixedly connected to a position corresponding to the pull ring mechanism 3 on the box body 1, the box body 1 is rotatably connected to a pressing cylinder mechanism 5, the pressing cylinder mechanism 5 is rotatably connected to a rotating ring 6, the rotating ring 6 is fixedly connected to a plurality of connecting rod mechanisms 7, a first rotating seat 8 is fixedly connected to the inner side wall of the box body 1, a placing rack mechanism 9 is placed between the first rotating seat 8 and the connecting rod mechanism 7, a transmission mechanism 10 is provided on the placing rack mechanism 9, and a pressing disc mechanism 11 is provided at the bottom of the box body 1; the pull ring mechanism 3 and the hook 4 are used to limit the rotating plate mechanism 2, the pressing cylinder mechanism 5 is used to realize the position change of the connecting rod mechanism 7, the pressing cylinder mechanism 5 is used to drive the pressing disc mechanism 11 to rotate, the pressing disc mechanism 11 is used to drive the transmission mechanism 10, and the transmission mechanism 10 is used to drive the position change of the placing rack mechanism 9 to adapt to the placement of samples at different heights.

[0025] The rotating plate mechanism 2 includes a cover plate rotating seat 201 fixed to the side of the box body 1. The cover plate rotating seat 201 is rotatably connected to a cover plate rotating shaft 202. The cover plate rotating shaft 202 is fixedly connected to a cover plate 203. A sealing strip 204 is fixedly connected to the inner side of the cover plate 203. A sealing groove 205 is provided above the box body 1. A holding handle 206 is provided on the top of the cover plate 203. The pull ring mechanism 3 includes a telescopic rod rotating seat 301 fixed to the cover plate 203. The telescopic rod rotating seat 301 is rotatably connected to a telescopic rod 302. One end of the telescopic rod 302 away from the telescopic rod rotating seat 301 is fixedly connected to a pull ring 303.

[0026] Specifically, by pulling the pull ring 303, the telescopic rod 302 is extended, so that the pull ring 303 is hung on the hook 4 to limit the cover plate 203.

[0027] The pressing cylinder mechanism 5 includes a rotating shaft 501 rotatably connected to the box body 1. One end of the rotating shaft 501 away from the box body 1 is fixedly connected to a second slider 502. The second slider 502 is fixedly connected to a second spring 503. One end of the second spring 503 away from the second slider 502 is fixedly connected to a pressing cylinder 504. The pressing cylinder 504 is rotatably connected to a rotating ring 6. The connecting rod mechanism 7 includes a second rotating seat 701 fixed to the rotating ring 6. The second rotating seat 701 is rotatably connected to a connecting sleeve 702. A third spring 703 is fixedly connected inside the connecting sleeve 702. One end of the third spring 703 away from the connecting sleeve 702 is fixedly connected to a third slider 704. On one side of the third slider 704 away from the third spring 703, a connecting rod 705 is fixedly connected. The connecting rod 705 passes through the connecting sleeve 702 and is slidably connected to the connecting sleeve 702. The connecting rod 705 is rotatably connected to a connecting shaft 706. The placing rack mechanism 9 includes a placing rack 901 disposed between the first rotating seat 8 and the connecting shaft 706. The placing rack 901 is rotatably connected to the first rotating seat 8 and the connecting shaft 706. The placing rack 901 is rotatably connected to a threaded rod 902. The threaded rod 902 is threadedly connected to a threaded sleeve 903. The threaded sleeve 903 is fixedly connected to a lifting plate 904. The lifting plate 904 is slidably connected to the placing rack 901. On one side of the lifting plate 904 away from the threaded sleeve 903, a plurality of placing sleeves 905 are fixedly connected. A plurality of jacks 906 are provided at corresponding positions on the placing rack 901 for the placing sleeves 905. The transmission mechanism 10 includes a first bevel gear 1001 fixedly connected to the threaded rod 902. The first bevel gear 1001 meshes with a second bevel gear 1002. The second bevel gear 1002 is fixedly connected to a gear shaft 1003. The gear shaft 1003 is rotatably connected to a gear shaft seat 1004. The gear shaft seat 1004 is fixed to the placing rack 901. One end of the gear shaft 1003 away from the second bevel gear 1002 is fixedly connected to a connecting wheel 1005. The pressing disc mechanism 11 includes a fourth spring 1101 fixed to the inner bottom of the box body 1. One end of the fourth spring 1101 away from the box body 1 is fixedly connected to a connecting ring 1102. The connecting ring 1102 is rotatably connected to a pressing disc 1103. The pressing disc 1103 contacts the connecting wheel 1005. The rotating shaft 501 passes through the axis of the pressing disc 1103. A slide bar 1104 is provided in the axial direction of the rotating shaft 501. A chute is provided inside the pressing disc 1103. The slide bar 1104 passes through the chute.

[0028] Specifically, rotate the pressing cylinder 504. The rotation of the pressing cylinder 504 will drive the rotation of the second slider 502, and then drive the rotation of the rotating shaft 501. The rotation of the rotating shaft 501 will drive the rotation of the sliding sleeve 1101, causing the pressing plate 1103 to rotate. Since the pressing plate 1103 contacts the connecting wheel 1005, the rotation of the pressing plate 1103 will drive the rotation of the connecting wheel 1005. The rotation of the connecting wheel 1005 will drive the rotation of the gear shaft 1003. The rotation of the gear shaft 1003 will drive the rotation of the second bevel gear 1002. The rotation of the second bevel gear 1002 will drive the rotation of the first bevel gear 1001, and then drive the rotation of the threaded rod 902. Since the threaded rod 902 meshes with the threaded sleeve 903, it is possible to control the lifting of the lifting plate 904 along the placement rack 901, and then drive the placement sleeve 905 to lift, so as to place samples at different heights.

[0029] Embodiment 2

[0030] Continue to refer to Figures 1-5 In the embodiment of the present invention, the telescopic rod 302 includes a telescopic sleeve 3021 rotatably connected to the cover plate rotating seat 201. A first spring 3022 is fixedly connected inside the telescopic sleeve 3021. One end of the first spring 3022 away from the telescopic sleeve 3021 is fixedly connected to a first slider 3023. The first slider 3023 is slidably connected to the telescopic sleeve 3021. The first slider 3023 is fixedly connected to a first sliding rod 3024. The first sliding rod 3024 passes through the telescopic sleeve 3021 and is slidably connected to the telescopic sleeve 3021.

[0031] During the implementation of the present invention, first separate the pull ring mechanism 3 from the hook 4, so as to open the rotating plate mechanism 2. At this time, driven by the pressing cylinder mechanism 5, the rotating ring 6 can be driven to rise, and then drive the position change of the connecting rod mechanism 7, thereby driving the placement rack mechanism 9 to rotate around the first rotating seat 8 to avoid sample placement. At this time, if it is necessary to adjust the height of the samples that the placement rack mechanism 9 can place, then drive the pressing cylinder mechanism 5 to rotate. The rotation of the pressing cylinder mechanism 5 will drive the rotation of the pressing plate mechanism 11. The rotation of the pressing plate mechanism 11 will drive the rotation of the transmission mechanism 10. The rotation of the transmission mechanism 10 will drive the position change of the placement rack mechanism 9. At this time, the samples are in an inclined placement state, which is convenient for sample classification. When it is necessary to carry, then close the rotating plate mechanism 2, hang the pull ring mechanism 3 on the hook 4. The rotating plate mechanism 2 can press the pressing cylinder mechanism 5, so that the rotating ring 6 descends, then drive the position change of the connecting rod mechanism 7, so that the placement rack mechanism 9 rotates around the first rotating seat 8, so as to make the samples in a horizontal state and avoid tilting and shaking.

[0032] The present invention can close the box body 1 by setting the rotating plate mechanism 2, and can realize the closing of the rotating plate mechanism 2 through the pull ring mechanism 3 and the hook 4, thereby avoiding the loosening of the rotating plate mechanism 2. When the rotating plate mechanism 2 is closed by the pressing cylinder mechanism 5, the height of the rotating ring 6 can be changed, and then the position of the connecting rod mechanism 7 can be changed, so that the inclination angle of the placing rack mechanism 9 can be changed. The pressing plate mechanism 11 can drive the transmission mechanism 10, and the transmission mechanism 10 can drive the placing rack mechanism 9 to change its position, so as to adapt to the placement of samples at different heights.

[0033] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A physical examination sample collection box, comprising a box body, characterized in that, A rotating plate mechanism is provided on the box body. The rotating plate mechanism is fixedly connected to a pull ring mechanism. A hook is fixedly connected to the box body at a position corresponding to the pull ring mechanism. The box body is rotatably connected to a pressing cylinder mechanism. The pressing cylinder mechanism is rotatably connected to a rotating ring. The rotating ring is fixedly connected to a plurality of connecting rod mechanisms. A first rotating seat is fixedly connected to the inner side wall of the box body. A placement rack mechanism is placed between the first rotating seat and the connecting rod mechanism. A transmission mechanism is provided on the placement rack mechanism. A pressing plate mechanism is provided at the bottom of the box body; The pull ring mechanism and the hook are used to limit the rotating plate mechanism. The pressing cylinder mechanism is used to change the position of the connecting rod mechanism. The pressing cylinder mechanism is used to drive the pressing plate mechanism to rotate. The pressing plate mechanism is used to drive the transmission mechanism. The transmission mechanism is used to drive the position change of the placement rack mechanism to accommodate the placement of samples at different heights.

2. The physical examination sample collection box according to claim 1, wherein The rotating plate mechanism includes a cover plate rotating seat fixed to the side of the box body. The cover plate rotating seat is rotatably connected to a cover plate rotating shaft. The cover plate rotating shaft is fixedly connected to a cover plate. A sealing strip is fixedly connected to the inner side of the cover plate. A sealing groove is provided above the box body. A holding handle is provided on the top of the cover plate.

3. The physical examination sample collection box according to claim 2, characterized in that, The pull ring mechanism includes a telescopic rod rotating seat fixed to the cover plate. The telescopic rod rotating seat is rotatably connected to a telescopic rod. A pull ring is fixedly connected to the end of the telescopic rod away from the telescopic rod rotating seat.

4. The physical examination sample collection box according to claim 3, characterized in that, The telescopic rod includes a telescopic sleeve rotatably connected to the cover plate rotating seat. A first spring is fixedly connected inside the telescopic sleeve. A first slider is fixedly connected to the end of the first spring away from the telescopic sleeve. The first slider is slidably connected to the telescopic sleeve. The first slider is fixedly connected to a first sliding rod. The first sliding rod passes through the telescopic sleeve and is slidably connected to the telescopic sleeve.

5. The physical examination sample collection box according to claim 1, characterized in that, The pressing cylinder mechanism includes a rotating shaft rotatably connected to the box body. A second slider is fixedly connected to the end of the rotating shaft away from the box body. A second spring is fixedly connected to the second slider. A pressing cylinder is fixedly connected to the end of the second spring away from the second slider. The pressing cylinder is rotatably connected to the rotating ring.

6. The physical examination sample collection box according to claim 1, characterized in that, The connecting rod mechanism includes a second rotating seat fixed to the rotating ring. The second rotating seat is rotatably connected to a connecting sleeve. A third spring is fixedly connected inside the connecting sleeve. A third slider is fixedly connected to the end of the third spring away from the connecting sleeve. A connecting rod is fixedly connected to the side of the third slider away from the third spring. The connecting rod passes through the connecting sleeve and is slidably connected to the connecting sleeve. The connecting rod is rotatably connected to a connecting shaft.

7. The physical examination sample collection box according to claim 6, characterized in that, The placement rack mechanism includes a placement rack provided between the first rotating seat and the connecting shaft. The placement rack is rotatably connected to the first rotating seat and the connecting shaft. The placement rack is rotatably connected to a threaded rod. The threaded rod is threadedly connected to a threaded sleeve. The threaded sleeve is fixedly connected to a lifting plate. The lifting plate is slidably connected to the placement rack. A plurality of placement sleeves are fixedly connected to the side of the lifting plate away from the threaded sleeve. A plurality of jacks are provided on the placement rack at positions corresponding to the placement sleeves.

8. The physical examination sample collection box according to claim 7, characterized in that, The transmission mechanism includes a first bevel gear fixedly connected to the threaded rod. The first bevel gear meshes with a second bevel gear. The second bevel gear is fixedly connected to a gear shaft. The gear shaft is rotatably connected to a gear shaft seat. The gear shaft seat is fixed to the placement rack. A connecting wheel is fixedly connected to the end of the gear shaft away from the second bevel gear.

9. The physical examination sample collection box according to claim 8, characterized in that, The pressure plate mechanism includes a fourth spring fixed to the inner bottom of the box body. One end of the fourth spring away from the box body is fixedly connected to a connecting ring, and the connecting ring is rotatably connected to the pressure plate. The pressure plate contacts the connecting wheel. The rotating shaft passes through the axis of the pressure plate. A slide bar is provided in the axial direction of the rotating shaft axis. A chute is provided in the pressure plate, and the slide bar passes through the chute.