Please select the most similar patent number from A, B, C and D. Which number is?
A portable medical massage apparatus, comprising a vertical round base (1). Supporting adsorption mechanisms are disposed at two ends of the lower surface of a cylindrical hollow cylinder (3); a hammering structure is disposed in the internal center of the cylindrical hollow cylinder (3); a fixing mechanism is disposed on the rear side surface of the vertical round base (1); a vibration massaging mechanism is disposed on a side surface of the cylindrical hollow cylinder (3); a power supplying mechanism is disposed on a side surface of the cylindrical hollow cylinder (3). The portable medical massage apparatus is simple in structure and has great practicality.
A: Disclosed is a shell of a tyre pressure collector, which shell is provided with a gas guide portion (1) and a main body portion (2) providing an accommodating space, wherein the gas guide portion (1) is in a sleeve shape, has a cylindrical space, and has an opening (10) at one end. One side of the opening (10) is defined as left side, and the side opposite thereto is defined as right side. The axis of the cylindrical space is nominally set as a reference axis. The main body portion (2) is connected to the gas guide portion (1) below the reference axis, the accommodating space of the main body portion (2) is in communication with the cylindrical space of the gas guide portion (1), a pressing portion (12) depressing towards the opening (10) is formed on the right side surface of the gas guide portion (1), and several grasping portions (22) depressing towards the right side of the main body portion (2) are arranged on the left side surface thereof from top to bottom. The shell conforms to ergonomic design, and is suitable for long-term handheld operations.
B: Disclosed are a sports massage device for relieving muscle soreness after training and a training apparatus, relating to the technical field of fitness facilities. The device comprises a massage means and a mounting frame, wherein the massage means comprises a shell, a rubber mat, protrusions, cylindrical iron, a second spring, a magnet and a cable; and the shell is connected to the mounting frame, the rubber mat covers an opening of the shell, the protrusions are connected to the upper end of the rubber mat, and the cylindrical iron is connected inside the shell; the cylindrical iron, the second spring, the magnet and the rubber mat are sequentially connected; and the cable is used for being connected to an alternating current power supply and is wound around the cylindrical iron, such that the cylindrical iron generates magnetism to drive the magnet to vibrate when the cable is powered on. The sports massage device for relieving muscle soreness after training and the training apparatus have the advantages of a simple structure and requiring no manpower.
C: A miniature sowing and pushing device for multiple-hole simultaneous operation, comprising a strip-shaped carrying board (1); a storage mechanism is arranged above the strip-shaped carrying board (1), and a lower surface of the strip-shaped carrying board (1) is provided with a discharge mechanism matching the storage mechanism; the strip-shaped carrying board (1) is connected to the storage mechanism by means of a detection mechanism; the lower surface of the strip-shaped carrying board (1) is provided with a mobile support mechanism, and the inside of the strip-shaped carrying board (1) is a hollow structure; a storage battery (21) is arranged in the strip-shaped carrying board (1), and a controller (22) is arranged on a side surface of the strip-shaped carrying board (1). The beneficial effects of the device are: a simple structure and being highly practical.
D: Disclosed is a device facilitating lifting and capable of directly displaying water quality, comprising a rectangular bearing plate (1), with a first circular groove (2) being provided on an upper surface of the rectangular bearing plate (1). A hemispheric shell (3) is embedded in the first circular groove (2). A centrifugation detection mechanism is provided in the hemispheric shell (3). A water intake mechanism is provided on a side surface of the hemispheric shell (3). A display mechanism is provided on an upper surface of the hemispheric shell (3). A movement mechanism is provided on a lower surface of the rectangular bearing plate (1). A controller (16) is provided on a side surface of the rectangular bearing plate (1). A storage battery (17) is provided on the lower surface of the rectangular bearing plate (1). The storage battery (17) is connected to an input end of the controller (16). The input end of the controller (16) is electrically connected to a first rotating micro-motor (5), a rotating box body (12) and a first electromagnetic shutter (15). The device has a simple structure and high practicability.
Answer: B