Non-magnetic cantilever movement mechanism

Abstract

The utility model provides a nonmagnetic cantilever movement mechanism, and solves the problem that a detection head of medical scanning equipment in the prior art cannot be provided with a stable and smooth movement mechanism. A non-magnetic cantilever movement mechanism comprises a fixing support, a cantilever connecting beam sliding in the fixing support and a detection head, the fixing support is a square frame, and an opening is formed in the top of the side wall of the square frame so that the cantilever connecting beam can stretch out conveniently; a first guide rail is fixed on the bottom edge of the opening, and a second guide rail is fixed on the inner surface of the bottom plate of the square frame; the section of the cantilever connecting beam is in an L shape, the vertical section is located on the fixing support, the horizontal section extends out of the opening in the side wall of the fixing support, the two guide rails are arranged on the fixing support, the contact face of the two guide rails is considered, the two guide rails are arranged on the bottom edge of the opening and the bottom plate respectively, and the design enables the cantilever connecting beam to slide smoothly. And the fixed bracket and the cantilever connecting beam are made of engineering plastics, so that the magnetic influence is avoided, and the durability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a non-magnetic cantilever motion mechanism. Background Art

[0002] In medical devices, some large-scale scanning devices such as nuclear magnetic resonance machines are equipped with manual detection heads. Due to the requirement of the device for being magnetic or non-magnetic, the metal parts in the detection head need to be demagnetized before they can be used. Later, some structures for manually pushing the detection head were designed, but these structures were not reasonably designed, resulting in friction between the detection head main body and the outer wall of the device or the detection head frame, which was rather laborious. It was often necessary to add lubricant to reduce friction. Excessive addition of lubricant also made the surrounding environment unclean, and insufficient addition still caused friction. Content of the Utility Model

[0003] The utility model provides a non-magnetic cantilever motion mechanism, which solves the problem that the detection head of the existing medical scanning device cannot be provided with a smooth and stable motion mechanism.

[0004] The technical solution of the utility model is realized as follows: a non-magnetic cantilever motion mechanism, including a fixed bracket, a cantilever connecting beam sliding in the fixed bracket, and a detection head.

[0005] The fixed bracket is a square frame, and an opening is provided at the top of the side wall of the square frame to facilitate the extension of the cantilever connecting beam; a first guide rail is fixed on the bottom edge of the opening, and a second guide rail is fixed on the inner surface of the bottom plate of the square frame.

[0006] The cross section of the cantilever connecting beam is L-shaped, and a groove is provided at the bottom end of its horizontal section. Two first ceramic rollers adapted to the first guide rail are installed in the groove; two second ceramic rollers adapted to the second guide rail are installed at the bottom of the side wall of its vertical section.

[0007] A limit card slot is provided at the end of the horizontal section of the cantilever connecting beam, and positioning strips adapted to the limit card slot are fixed on the side walls at both ends of the square frame.

[0008] The detection head is fixedly connected to the horizontal section of the cantilever connecting beam.

[0009] Preferably, the first ceramic rollers are vertically arranged, and the second ceramic rollers are horizontally arranged.

[0010] Preferably, the detection head is composed of a detection head main body and a handle fixed on the side end face of the detection head main body.

[0011] Preferably, two through holes are provided at the bottom of the side wall of the vertical section of the cantilever connecting beam to facilitate the fixation of the second ceramic rollers.

[0012] Preferably, both the first guide rail and the second guide rail are arranged along the length direction of the square frame.

[0013] The beneficial effects of the present utility model compared with the background technology are as follows:

[0014] The cross-section of the cantilever connecting beam is L-shaped. The vertical section is located on the fixed bracket, and the horizontal section extends out from the opening on the side wall of the fixed bracket. There are two guide rails on the fixed bracket. Considering their contact surfaces, the two guide rails are respectively arranged on the bottom edge of the opening and on the bottom plate. This design enables the cantilever connecting beam to slide smoothly with no friction between them. In order to make the cantilever connecting beam slide smoothly, a positioning strip is designed on the top of the fixed bracket, which cooperates with the limit card slot on the cantilever connecting beam. When manually pushing the detection head, the detection head moves more smoothly and steadily, and at the same time, the effect of saving effort is achieved. Moreover, both the fixed bracket and the cantilever connecting beam are made of engineering plastic material, which has no magnetic influence and is more durable. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic structural diagram of the present utility model;

[0017] Figure 2 It is a schematic structural diagram of the present utility model with the side plate of the fixed bracket removed;

[0018] Figure 3 It is an assembly schematic diagram of the cantilever connecting beam and the detection head of the present utility model;

[0019] Figure 4 It is a schematic structural diagram of the ceramic roller of the present utility model.

[0020] In the figure: 1 - fixed bracket; 11 - square frame; 12 - first guide rail; 13 - second guide rail; 14 - positioning strip; 2 - cantilever connecting beam; 21 - vertical section; 22 - first ceramic roller; 23 - second ceramic roller; 24 - limit card slot; 3 - detection head; 31 - detection head body; 32 - handle. Detailed Embodiments

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0022] As Figures 1-4 shown, a non-magnetic cantilever motion mechanism includes a fixed bracket 1, a cantilever connecting beam 2 sliding within the fixed bracket 1, and a detection head 3. The fixed bracket 1 is processed and manufactured from a non-metallic material ABS, and the fixed bracket 1 is installed on the scanner device through bolts made of PEEK material.

[0023] The fixed bracket 1 is a square frame 11, and an opening is provided at the top of the side wall of the square frame 11 to facilitate the extension of the cantilever connecting beam 2; a first guide rail 12 is fixed on the bottom edge of the opening, and a second guide rail 13 is fixed on the inner surface of the bottom plate of the square frame 11;

[0024] The cross-section of the cantilever connecting beam 2 is L-shaped, and a groove is provided at the bottom end of its horizontal section. Two first ceramic rollers 22 adapted to the first guide rail 12 are installed in the groove; two second ceramic rollers 23 adapted to the second guide rail 13 are installed at the bottom of the side wall of its vertical section 21;

[0025] A limit card slot 24 is provided at the end of the horizontal section of the cantilever connecting beam 2, and positioning bars 14 cooperating with the limit card slot 24 are fixed on the side walls at both ends of the square frame 11;

[0026] The detection head 3 is fixedly connected to the horizontal section of the cantilever connecting beam 2.

[0027] Preferably, the first ceramic rollers 22 are vertically arranged, and the second ceramic rollers 23 are horizontally arranged.

[0028] Preferably, the detection head 3 is composed of a detection head main body 31 and a handle 32 fixed on the side end face of the detection head main body 31.

[0029] Preferably, two through holes are provided at the bottom of the side wall of the vertical section 21 of the cantilever connecting beam 2 to facilitate the fixation of the second ceramic rollers 23.

[0030] Preferably, both the first guide rail and the second guide rail are arranged along the length direction of the square frame.

[0031] The fixed bracket 1 designed by the utility model is processed and manufactured from a non-metallic material, ABS. A positioning strip 24 and two guide rails are installed thereon. The two guide rails enable the cantilever connecting beam, which is also made of the non-metallic material ABS, to slide back and forth. Moreover, the cooperation between the positioning strip 24 at the top and the limit card slot 14 enables the cantilever connecting beam 2 to move smoothly along the two guide rails, and the structural design is reasonable. The two guide rails and the positioning strip 24 are both processed and manufactured from POM material, which improves wear resistance and reduces the resistance during movement. The guide rails and the positioning strip 24 are both installed on the fixed bracket 1 through bolts made of PEEK material. The detection head 3 and the cantilever connecting beam 2 are fixedly connected by bolts made of engineering plastic. A handle 32 is installed on the detection head 3, which is also processed and manufactured from the non-metallic material ABS. By pushing the handle 32, the movement of this mechanism can be realized. The non-magnetic cantilever movement mechanism can meet the usage requirements of eliminating the need for degaussing and saving effort in pushing.

[0032] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A non-magnetic cantilever motion mechanism, characterized in that: It includes a fixed bracket, a cantilever connecting beam sliding in the fixed bracket, and a detection head. The fixed bracket is a square frame, and an opening is provided on the top of the side wall of the square frame to facilitate the extension of the cantilever connecting beam; a first guide rail is fixed on the bottom edge of the opening, and a second guide rail is fixed on the inner surface of the bottom plate of the square frame; The cross section of the cantilever connecting beam is L-shaped, and a groove is provided at the bottom end of the horizontal section, and two first ceramic rollers adapted to the first guide rail are installed in the groove; two second ceramic rollers adapted to the second guide rail are installed at the bottom of the side wall of the vertical section; The horizontal end of the cantilever connecting beam is provided with a limit slot, and the side walls at both ends of the square frame are fixed with positioning strips that match the limit slot; The detection head is fixedly connected to the horizontal section of the cantilever connecting beam.

2. A non-magnetic cantilever motion mechanism as claimed in claim 1, characterized in that: The first ceramic roller is arranged vertically, and the second ceramic roller is arranged horizontally.

3. A non-magnetic cantilever motion mechanism as claimed in claim 2, characterized in that: The detection head is composed of a detection head body and a handle fixed on the side end surface of the detection head body.

4. A non-magnetic cantilever motion mechanism as claimed in claim 3, characterized in that: Two through holes are provided at the bottom of the side walls of the vertical section of the cantilever connecting beam to facilitate fixing the second ceramic roller.

5. A non-magnetic cantilever motion mechanism as claimed in claim 4, characterized in that: The first guide rail and the second guide rail are both arranged along the length direction of the square frame.

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