An intelligent storage cabinet for industrial gas cylinders
By introducing a linkage telescopic unit into the industrial gas cylinder storage cabinet, the automatically extended movable pedal solves the problems of cumbersome operation and the introduction of dirt, achieving the effect of simplifying operation and protecting the environment.
Patent Information
- Application Number
- CN202510866218.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-26
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2045-06-26
AI Technical Summary
Existing industrial gas cylinder storage cabinets have complicated operation steps when placing gas cylinders, and the slides are prone to bring in dirt, affecting the clean or explosion-proof environment.
An intelligent storage cabinet for industrial gas cylinders is designed, which includes an intelligent cabinet body and a linked telescopic unit. The linked telescopic unit is triggered by rotating the cabinet door, and a movable pedal is automatically extended to the ground, which simplifies operation and prevents dirt from entering the cabinet body when it is retracted.
It simplifies the gas cylinder placement steps, improves the stability and safety of operation, prevents dirt from entering the cabinet, and is suitable for clean or explosion-proof environments.
Smart Images

Figure CN120368208B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of gas cylinder storage cabinets, and in particular to an intelligent storage cabinet for industrial gas cylinders. Background Art
[0002] Industrial gas cylinders refer to mobile pressure vessels that can be refilled under normal circumstances. They often store common industrial gases such as SF6, oxygen, acetylene, and nitrogen. They are mainly used in power plants, production workshops, or construction sites. Industrial gas cylinders are often stored in special cabinets, such as an intelligent gas cylinder cabinet with announcement number CN220061445U, which includes: a cabinet, a cabinet door, a clamping assembly, a pressure sensor, an alarm assembly and a controller. The pressure sensor is connected to the gas cylinder to detect the pressure value in the gas cylinder in real time. When a gas cylinder stored for a long time leaks, the pressure sensor can transmit the gas leakage signal to the controller as soon as possible. It also includes a slide, one end of which is hinged to the inner bottom surface of the cabinet and the other end is a free end. The free end of the slide can contact the ground to assist the gas cylinder truck in transporting and replacing the gas cylinder.
[0003] However, in actual use, we found that when preparing to place the gas cylinder into the cabinet, the staff needs to open the cabinet door first, and then bend down to turn the slide out to one side to contact the ground. This increases the staff's operating steps and reduces the stability of placing the gas cylinder. Moreover, when the slide is stored inside the cabinet, dust, dirt, water stains and other dirt on the ground will be brought into the cabinet. When the slide is put away, these dirt will pollute the environment inside the cabinet, which is particularly unfavorable for environments that require cleanliness or explosion-proofing.
[0004] To this end, we propose an intelligent storage cabinet for industrial gas cylinders. Summary of the Invention
[0005] A technical problem to be solved by this application is: how to design an intelligent storage cabinet for industrial gas cylinders that is convenient for workers to place gas cylinders.
[0006] In order to solve the above technical problems, an embodiment of the present application provides an intelligent storage cabinet for industrial gas cylinders, including an intelligent cabinet body and two cabinet doors. The intelligent cabinet body is rotatably provided with rotating shafts on both sides, and the two cabinet doors are respectively arranged on adjacent rotating shafts. An adjustment cavity is provided at the bottom of the intelligent cabinet body, and two movable pedals are provided in the adjustment cavity. Two linkage telescopic units are provided in the adjustment cavity, which are respectively used in conjunction with the movable pedals.
[0007] In some embodiments, the linked telescopic unit includes a sliding frame slidably arranged in the adjustment cavity, a displacement member is provided on the sliding frame, a transmission shaft is rotatably arranged in the adjustment cavity, a transmission member is provided in the adjustment cavity, and a locking member is provided in the adjustment cavity.
[0008] In some embodiments, the shifting member includes a fixed rack arranged on a sliding frame, a driving gear is arranged on the transmission shaft, the movable pedal is rotatably arranged on the sliding frame, and a shifting slot is provided on the adjustment cavity.
[0009] In some embodiments, a mounting plate is provided on the sliding frame, a wedge-shaped top block is slidably provided on the sliding frame, and a return spring connected to the wedge-shaped top block is provided on the mounting plate.
[0010] In some embodiments, the movable pedal and the sliding frame are connected via a damping shaft.
[0011] In some embodiments, the side of the smart cabinet close to the shifting slot is chamfered.
[0012] In some embodiments, the movable pedal is composed of a fitting section, a guide section and a connecting section.
[0013] In some embodiments, the transmission member includes a rotating rod arranged on a rotating shaft, a rope is arranged on the rotating rod, a winding roller is arranged on the transmission shaft, a plurality of guide rollers are arranged in the adjustment cavity, the rope passes through the plurality of guide rollers and is wound around the winding roller, and a torsion spring is arranged on the transmission shaft.
[0014] In some embodiments, the locking member includes a first magnet disposed on the rotating rod, and a second magnet is disposed in the adjustment cavity.
[0015] In some embodiments, the locking member further includes a bent rod arranged on the adjustment cavity, a rectangular tube is provided on the bent rod, a double-sided wedge block is slidably provided in the rectangular tube, and an extrusion spring is provided between the double-sided wedge block and the bent rod.
[0016] The present invention has at least the following beneficial effects:
[0017] 1. When placing gas cylinders, the operator can use the linkage telescopic unit to extend the movable pedal to the outside of the intelligent cabinet when turning the cabinet door. The pedal automatically tilts to touch the ground, simplifying the operator's operation steps and eliminating the need for the operator to bend over to work. The entire process is safer and more stable.
[0018] 2. Through the design of the adjustment cavity, the movable pedal is placed inside the adjustment cavity and separated from the intelligent cabinet, preventing dirt such as dust, mud, and water stains on the ground from being brought into the intelligent cabinet. At the same time, when the movable pedal retracts into the adjustment cavity, it will contact the top of the shift chute, thereby scraping the dirt outside the adjustment cavity;
[0019] 3. The movable pedal is lifted by the wedge-shaped top block, so that it can smoothly enter and exit the shift chute to avoid the situation where it cannot be extended. In addition, the movable pedal is connected to the sliding frame through the damping shaft to prevent the movable pedal from falling directly to the ground, reducing noise pollution. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0021] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention;
[0022] Figure 3 For the present invention Figure 1 Schematic diagram of the planar structure;
[0023] Figure 4 For the present invention Figure 2 Schematic diagram of the local cross-section structure;
[0024] Figure 5 For the present invention Figure 4 Schematic diagram of the local cross-section structure;
[0025] Figure 6 For the present invention Figure 1 Schematic diagram of the flat cross-section structure;
[0026] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure of area A;
[0027] Figure 8 For the present invention Figure 6 Explosion diagram of the middle part structure;
[0028] Figure 9 For the present invention Figure 8 Schematic diagram of the enlarged structure of the middle B area;
[0029] Figure 10 This is a schematic diagram of the structure of the movable pedal and the sliding frame of the present invention;
[0030] Figure 11 This is an exploded schematic diagram of the upper structure of the sliding frame of the present invention;
[0031] Figure 12 This is a partial structural diagram of the linkage telescopic unit of the present invention;
[0032] Figure 13 This is a schematic diagram of the partial cross-sectional structure of the locking member of the present invention;
[0033] Figure 14 For the present invention Figure 13 Schematic diagram of the enlarged structure of area C in the middle.
[0034] In the figure: 1. Intelligent cabinet; 2. Cabinet door; 3. Rotating shaft; 4. Adjusting cavity; 5. Movable pedal; 51. Fitting section; 52. Guide section; 53. Connecting section; 6. Linked telescopic unit; 61. Sliding frame; 62. Transmission shaft; 7. Shifting member; 71. Fixed rack; 72. Driving gear; 73. Shifting chute; 8. Transmission member; 81. Rotating rod; 82. Wire rope; 83. Winding roller; 84. Guide roller; 85. Torsion spring; 9. Locking member; 91. Magnet 1; 92. Magnet 2; 93. Bending rod; 94. Rectangular tube; 95. Double-sided wedge block; 96. Extrusion spring; 10. Mounting plate; 11. Wedge-shaped top block; 12. Return spring; 13. Extrusion chute. DETAILED DESCRIPTION
[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0036] Example 1: Please refer to Figures 1-14The present invention provides a technical solution: an intelligent storage cabinet for industrial gas cylinders, comprising an intelligent cabinet body 1 and two cabinet doors 2, wherein the intelligent cabinet body 1 is provided with a rotation axis 3 on both sides, and the two cabinet doors 2 are respectively provided on adjacent rotation axes 3, an adjustment cavity 4 is provided at the bottom of the intelligent cabinet body 1, two movable pedals 5 are provided in the adjustment cavity 4, and two linkage telescopic units 6 are provided in the adjustment cavity 4 for use with the movable pedals 5 respectively; the intelligent cabinet body 1 includes the structures of the clamping assembly, pressure sensor, alarm assembly and controller in the patent document (Announcement No. CN220061445U), and takes advantage of the advantages of the following advantages: By connecting the pressure sensor to the gas cylinder, the pressure value in the gas cylinder can be detected in real time. When a gas cylinder stored for a long time leaks, the pressure sensor can transmit the gas leakage signal to the controller in the first time, thereby replacing the traditional combustible gas sensor, which is suitable for detecting various gases, improving the safety of gas cylinder storage, and expanding the application range of the intelligent gas cylinder cabinet; the cabinet door 2 is rotatably arranged on both sides of the intelligent cabinet body 1 in the form of a rotating shaft 3, and the bottom of the rotating shaft 3 extends to the inside of the regulating cavity 4 for subsequent transmission connection. This rotation method is an existing common structure and it is easy for those skilled in the art to think of it. Therefore, no further details are given here. The regulating cavity 4 is composed of the side panels and bottom panel around the bottom of the intelligent cabinet 1. A plurality of reinforcing ribs are arranged inside the regulating cavity 4. By dispersing the load, the concentrated load of the gas cylinder can be effectively dispersed to a larger bottom panel area. The ribs greatly improve the bending stiffness and crush resistance of the cabinet bottom panel, preventing the cabinet bottom from denting, bending or even permanent deformation under the heavy pressure of the gas cylinder. The increased structural stiffness increases the strength of the bottom of the intelligent cabinet 1, ensuring that the industrial gas cylinder can still be effectively placed for a long time when it is full. In addition, the cabinet bottom panel that bears heavy load for a long time is prone to metal fatigue. The reinforcing ribs significantly reduce the stress level of the bottom panel under cyclic loads by increasing the moment of inertia of the section. The surface of the movable pedal 5 is designed with an anti-skid structure. The operator needs to walk or step on the surface of the movable pedal 5 to rotate the gas cylinder. The anti-skid structure (such as convex patterns, grooves, and rubber layers) can significantly increase the friction between the sole of the shoe and the movable pedal 5, avoiding falls, sprains, and even injuries caused by slipping (especially when there are oil or water stains on the ground). The gas cylinder is generally rotated along the movable pedal 5 to the inside of the smart cabinet 1. The anti-skid structure allows the operator to control the start and stop and speed of the gas cylinder more easily, especially when a short pause is required on a slope, and no additional braking device is required to hold it stably.
[0037] When it is necessary to store or retrieve the gas cylinder, the operator opens the cabinet door 2. Since the cabinet door 2 is connected to the intelligent cabinet 1 through the rotating shaft 3, and the bottom of the rotating shaft 3 extends into the adjusting chamber 4, the opening action of the cabinet door 2 will trigger the linkage telescopic unit 6 in the adjusting chamber 4 to work, and the linkage telescopic unit 6 will drive the movable pedal 5 connected to it to automatically extend and descend from the adjusting chamber 4 until the free end of the movable pedal 5 touches the ground, forming a stable slope channel outside the intelligent cabinet 1; after the gas cylinder is placed or taken out, the cabinet door 2 is closed, and the closing action of the cabinet door 2 automatically retracts the movable pedal 5 into the adjusting chamber 4 through the rotating shaft 3 and the linkage telescopic unit 6, restoring the flat state of the bottom of the intelligent cabinet 1, saving space and keeping the appearance neat.
[0038] The linked telescopic unit 6 includes a sliding frame 61 that is slidably arranged in the adjustment cavity 4, a shifting member 7 is provided on the sliding frame 61, a transmission shaft 62 is rotatably arranged in the adjustment cavity 4, a transmission member 8 is provided in the adjustment cavity 4, and a locking member 9 is provided in the adjustment cavity 4; the sliding frame 61 has a U-shaped structure, which ensures effective contact with the bottom plate of the adjustment cavity 4 and improves stability during sliding. The transmission member 8 provides mechanical transmission, and the locking member 9 realizes the locking positioning of the cabinet door 2.
[0039] The shifting member 7 includes a fixed rack 71 arranged on the sliding frame 61, a driving gear 72 is arranged on the transmission shaft 62, the movable pedal 5 is rotatably arranged on the sliding frame 61, and a shifting slot 73 is provided on the adjusting chamber 4; the cross-section of the shifting slot 73 is designed to be a right-angled trapezoidal structure, with a right-angled side at the top and an inclined side at the bottom. The movement trajectory of the movable pedal 5 can be constrained by the shifting slot 73 to avoid lateral deviation or derailment, ensuring that the movable pedal 5 moves out or retracts in a straight line and smoothly. When the movable pedal 5 is fully moved out, the movable pedal 5 will automatically drop and contact the inclined side of the shifting slot 73, which can provide a stable support for the movable pedal 5 and reduce stress concentration. At the same time, it can also reduce the pressure on the movable pedal 5 and the rotating shaft 3 of the sliding frame 61, which is beneficial to improving the service life of the structure.
[0040] The driving gear 72 rotates to drive the fixed rack 71 to shift, and the fixed rack 71 drives the sliding frame 61 and the movable pedal 5 thereon to shift toward one side of the shifting slot 73 and move outward from the shifting slot 73.
[0041] During use, when it is necessary to store or access the gas cylinder, the operator opens the cabinet door 2. Since the cabinet door 2 is connected to the intelligent cabinet 1 through the rotating shaft 3, and the bottom of the rotating shaft 3 extends into the adjusting chamber 4, the opening action of the cabinet door 2 will trigger the linkage telescopic unit 6 in the adjusting chamber 4 to work. The linkage telescopic unit 6 will drive the transmission shaft 62 to rotate, and the transmission shaft 62 drives the driving gear 72 to rotate. The rotation of the driving gear 72 drives the fixed rack 71 to shift, and the fixed rack 71 drives the sliding frame 61 and the movable pedal 5 thereon to shift toward the side of the shift slot 73. The movable pedal 5 connected to it automatically extends and descends from the shift slot 73 on the adjusting chamber 4 until the free end of the movable pedal 5 touches the ground, forming a stable slope channel outside the intelligent cabinet 1.
[0042] Example 2: Please refer to Figures 6-11 The present invention provides a technical solution: an intelligent storage cabinet for industrial gas cylinders, wherein a mounting plate 10 is provided on the sliding frame 61, and a wedge-shaped top block 11 is slidably provided on the sliding frame 61, and a return spring 12 connected to the wedge-shaped top block 11 is provided on the mounting plate 10, and an extrusion inclined groove 13 for adjusting the mounting plate 10 and the wedge-shaped top block 11 is provided in the adjusting chamber 4, and the mounting plate 10 and the sliding frame 61 are produced by an integrated molding process, which can increase the overall hardness of the mounting plate 10; in order to reduce the temporary space used when the wedge-shaped top block 11 shrinks and ensure the compactness between the structures, the present solution is provided with fixed notches on both the mounting plate 10 and the wedge-shaped top block 11 for adjusting the return spring 12, and when the wedge-shaped top block 11 contacts the extrusion inclined groove 13, the return spring 12 is located inside the fixed notch; The cam 73 is pressed against the top of the wedge 11 and the cam 74 is pressed against the top of the wedge 11, and the cam 73 is pressed against the top of the wedge 11. When the cam 73 is pressed, the cam 73 is pressed against the top of the wedge 11 and the cam 74 is pressed against the top of the wedge 11.
[0043] Example 3: Please refer to Figures 8-10The present invention provides a technical solution: an intelligent storage cabinet for industrial gas cylinders, wherein the movable pedal 5 and the sliding frame 61 are connected by a damping shaft, and the damping shaft linearly slows down the falling speed of the movable pedal 5 through friction resistance, completely eliminating the free-fall impact, and avoiding the end of the movable pedal 5 from violently hitting the ground to cause bouncing, displacement or structural deformation, while preventing the ground (especially ceramic tiles and epoxy floors) from cracking and damage. The damping effect absorbs and releases kinetic energy, reduces the instantaneous impact load of the rotating shaft and the slide, significantly suppresses metal fatigue and loosening of connectors, extends the service life of core components, eliminates sudden noise and vibration during the uniform descent process, and reduces the operator's psychological tension.
[0044] Example 4: Please refer to Figure 5-Figure 6 The present invention provides a technical solution: an intelligent storage cabinet for industrial gas cylinders, wherein the side of the intelligent cabinet body 1 close to the shift slide 73 is chamfered, and the chamfering treatment makes this position inclined, and cooperates with the movable pedal 5 to form a stable slope channel outside the intelligent cabinet body 1, so that the staff can easily deliver the industrial gas cylinders to the inside of the intelligent cabinet body 1, avoiding the occurrence of steps when moving to the end on the movable pedal 5, and the overall rotation is more stable and smoother.
[0045] Example 5: Please refer to Figure 11-12 The present invention provides a technical solution: an intelligent storage cabinet for industrial gas cylinders, wherein the movable pedal 5 is composed of a fitting section 51, a guide section 52 and a connecting section 53. The fitting section 51 is close to the ground, and the side close to the ground is parallel to the ground after rotation. The guide section 52 is provided with an anti-slip structure to improve operation safety. The connecting section 53 is thickened for installing a damping shaft to improve the structural rigidity of the connection.
[0046] Example 6: Please refer to Figure 4-13The present invention provides a technical solution: an intelligent storage cabinet for industrial gas cylinders, wherein the transmission member 8 includes a rotating rod 81 arranged on the rotating shaft 3, a wire rope 82 is arranged on the rotating rod 81, a winding roller 83 is arranged on the transmission shaft 62, and a plurality of guide rollers 84 are arranged in the adjusting chamber 4. The wire rope 82 passes through the plurality of guide rollers 84 and is wound around the winding roller 83. A torsion spring 85 is arranged on the transmission shaft 62. A plurality of guide rollers 84 can be provided. Two are provided in this solution, but not limited to two. One of the two guide rollers 84 closest to the rotating shaft 3 in this solution is located near the rotating rod 81, and the other is located near the transmission shaft 62. When the wire rope 82 passes through the two guide rollers 84, it should also be wound around the wire rope 82. It is set to the front end or the rear end, and the remaining guide rollers 84 should be located between the two guide rollers 84 for threading; a through hole for winding the rope 82 is provided at the end of the rotating rod 81 away from the rotating shaft 3. In this scheme, a hook is provided at the through hole position for connecting the rope 82. The rope 82 will pass through multiple guide rollers 84 in sequence and finally be wound around the winding roller 83; the cabinet door 2 and the rotating shaft 3 rotate, and the rotating rod 81 drives the rope 82 to move, so that the winding roller 83 rotates, and the winding roller 83 drives the transmission shaft 62 and the driving gear 72 to rotate, and the driving gear 72 will drive the fixed rack 71 and the sliding frame 61 to shift, and the torsion spring 85 is rotated in the process to provide a power source for subsequent resetting, and the cabinet door 2 is manually closed by the staff.
[0047] Example 7: Please refer to Figure 13-14 The present invention provides a technical solution: an intelligent storage cabinet for industrial gas cylinders, wherein the locking member 9 includes a magnet 1 91 arranged on the rotating rod 81, and a magnet 2 92 is arranged in the adjusting cavity 4, which automatically positions the cabinet door 2, realizes high-reliability positioning of "locking upon contact", realizes silent guidance, and eliminates mechanical collision noise.
[0048] Example 8: Please refer to Figure 13-14 The present invention provides a technical solution: an intelligent storage cabinet for industrial gas cylinders, wherein the locking member 9 also includes a bent rod 93 arranged on the adjusting cavity 4, and a rectangular tube 94 is provided on the bent rod 93. A double-sided wedge block 95 is slidably provided in the rectangular tube 94, and an extrusion spring 96 is provided between the double-sided wedge block 95 and the bent rod 93. The double-sided wedge block 95 is used in conjunction with the rotating rod 81 to lock and position the rotating rod 81. After the rotating rod 81 rotates, it will squeeze the double-sided wedge block 95 and push the double-sided wedge block 95 upward and enter its interior. When unlocking is required, the rotation of the cabinet door 2 can drive the rotating rod 81 to rotate over the double-sided wedge block 95.
[0049] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.
[0050] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.
Claims
1. An intelligent storage cabinet for industrial gas cylinders, comprising an intelligent cabinet body (1) and two cabinet doors (2), characterized in that: The intelligent cabinet (1) is provided with rotating shafts (3) on both sides thereof, and the two cabinet doors (2) are respectively provided on adjacent rotating shafts (3). The intelligent cabinet (1) is provided with an adjustment cavity (4) at the bottom thereof, and two movable pedals (5) are provided in the adjustment cavity (4). The adjustment cavity (4) is provided with two linked telescopic units (6) respectively used in conjunction with the movable pedals (5). The linkage telescopic unit (6) comprises a sliding frame (61) slidably arranged in the adjustment cavity (4), a shifting member (7) is provided on the sliding frame (61), a transmission shaft (62) is rotatably arranged in the adjustment cavity (4), a transmission member (8) is provided in the adjustment cavity (4), and a locking member (9) is provided in the adjustment cavity (4); The shifting member (7) includes a fixed rack (71) arranged on the sliding frame (61), a driving gear (72) is arranged on the transmission shaft (62), the movable pedal (5) is rotatably arranged on the sliding frame (61), and a shifting slot (73) is provided on the regulating chamber (4); The sliding frame (61) is provided with a mounting plate (10), a wedge-shaped top block (11) is slidably provided on the sliding frame (61), a return spring (12) connected to the wedge-shaped top block (11) is provided on the mounting plate (10), and an extrusion chute (13) for adjusting the mounting plate (10) and the wedge-shaped top block (11) is provided in the adjustment chamber (4); The movable pedal (5) and the sliding frame (61) are connected via a damping shaft; The side of the intelligent cabinet (1) close to the shifting chute (73) is chamfered; The movable pedal (5) is composed of a fitting section (51), a guide section (52) and a connecting section (53); The transmission member (8) comprises a rotating rod (81) arranged on the rotating shaft (3), a wire rope (82) is arranged on the rotating rod (81), a winding roller (83) is arranged on the transmission shaft (62), a plurality of guide rollers (84) are arranged in the adjustment chamber (4), the wire rope (82) passes through the plurality of guide rollers (84) and is wound around the winding roller (83), and a torsion spring (85) is arranged on the transmission shaft (62).
2. The intelligent storage cabinet for industrial gas cylinders according to claim 1 is characterized in that: The locking member (9) comprises a first magnet (91) arranged on the rotating rod (81), and a second magnet (92) is arranged in the regulating cavity (4).
3. The intelligent storage cabinet for industrial gas cylinders according to claim 2 is characterized in that: The locking member (9) further comprises a bent rod (93) arranged on the adjustment cavity (4), a rectangular tube (94) being arranged on the bent rod (93), a double-sided wedge block (95) being slidably arranged in the rectangular tube (94), and an extrusion spring (96) being arranged between the double-sided wedge block (95) and the bent rod (93).
Citation Information
Patent Citations
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CN220061445U
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CN117175384A
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