JP3042401U - Aneroid pressure gauge - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a novel aneroid type pressure gauge which is devised so as to improve movement and to improve economy. A hollow hole (3) is provided in the top end surface of a movable side shaft (2) of an empty tray (1), and apart from this, it has a short cylindrical shape with a bottom wall (4) made of hard plastic, and the inner surface of the bottom wall (4) is conical. Alternatively, a receiving member 5 having a spherical shape is formed, and the receiving member 5 is fitted into the concave hole 3 so as not to be pulled out, and the metal transmission rod 8 to the sector gear 7 is inserted into the inner hole 6 of the receiving member 5. It is characterized in that the lower end of is inserted.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an aneroid type pressure gauge mainly used for a blood pressure monitor, and more particularly to an aneroid type pressure gauge having an improved connection between a hollow tray (bellows) and a transmission rod.

[0002]

[Prior art]

 In this type of conventionally known aneroid pressure gauge, the movable side shaft of the empty tray (bellows) is made of metal (brass), and a receiving hole is provided directly on the top end surface of the movable side shaft. It was what was going on.

[0003]

[Problems to be solved by the device]

 In the aneroid type pressure gauge described in the above-mentioned conventional technology, the wall surface of the receiving hole is a metal surface and the transmission shaft is made of metal. However, there is a limit to obtaining better movement, and when rusting occurs due to long-term non-use or the receiving hole wears out due to long-term use, uneconomical repair of replacing the entire basin must be performed. There was a problem that it was not obtained.

An object of the present invention is to provide a novel aneroid type pressure gauge devised to solve the above problems.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the aneroid type pressure gauge according to the present invention is provided with a concave hole 3 in the top end surface of a movable side shaft 2 of an empty tray 1 and, apart from this, a short wall 4 made of hard plastic and having a bottom wall 4. A receiving member 5 having a cylindrical shape and an inner surface of the bottom wall 4 having a spherical shape or a conical shape is formed, and the receiving member 5 is fitted into the concave hole 3 so as not to be pulled out, and the receiving member 5 is The lower end of the metal transmission rod 8 to the sector gear 7 is inserted into the hole 6.

[0006]

【Example】

 In the embodiment shown in the drawing, a case 16 composed of a case body 10, a pedestal 11, a crimping nut 12, a scale plate 13, a lens 14 and a lens pressing ring 15 is provided with an empty tray 1, a transmission rod 8, an adjusting member 17 and a sector. The gear 7, the gear shaft 18, the pinion 19, the pinion shaft 20, and the hair spring 21 are built in, the front end of the pinion shaft 20 is lengthened, and the pointer 22 is attached to this part. The movable side shaft 2 is provided with a recessed hole 3 in the top end surface thereof, and a receiving member 5 described later is fitted into the recessed hole 3 so as not to be removed, and the receiving member 5 is inserted into the inner hole 6 of the receiving member 5 to the sector gear 7. The lower end of the metal transmission rod 8 is inserted.

The receiving member 5 is made of polyacetal resin (trade name: DURACON) and has a short cylindrical shape with the bottom wall 4 and an inner surface of the bottom wall 4 having a spherical shape. is there.

[0008]

[Effect of the invention]

 The aneroid type pressure gauge according to the present invention is provided with a concave hole 3 in the top end surface of the movable side shaft 2 of the empty tray 1 as described above, and separately from this, a short cylindrical shape with a bottom wall 4 made of hard plastic. A receiving member 5 having a spherical shape or a conical shape is formed on the inner surface of the bottom wall 4, and the receiving member 5 is fitted into the concave hole 3 so as not to be pulled out, and is inserted into the inner hole 6 of the receiving member 5. Since the lower end of the metal transmission rod 8 is inserted into the sector gear 7, the wall surface of the inner hole (reception hole) 6 of the receiving member 5 is made of hard plastic and the transmission rod is made of metal. It has very good slipperiness and moves better, and when it becomes necessary to replace parts due to wear of the receiving holes due to long-term use or rusting due to long-term non-use, repair is performed by replacing only the receiving member 5. It is sufficient and economically advantageous.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is a partially cutaway front view showing the inside.

FIG. 4 is a partially cutaway side view of the same.

[Explanation of symbols]

 1 Empty tray 2 Movable side shaft 3 Recessed hole 4 Bottom wall 5 Receiving member 6 Inner hole (receiving hole) 7 Sector gear 8 Transmission rod 10 Case body 11 Pedestal 12 Caulking nut 13 Scale plate 14 Lens 15 Lens pressing ring 16 Case 17 Adjusting member 18 Gear shaft 19 Pinion 20 Pinion shaft 21 Hair spring 22 Pointer

Claims (1)

[Utility model registration claims] 1. A hollow hole 3 is provided in the top end surface of a movable side shaft 2 of an empty tray 1, and is made of hard plastic to have a short cylindrical shape with a bottom wall 4 and the inner surface of the bottom wall 4 is spherical. The receiving member 5 having a shape or a conical shape is configured, and the receiving member 5 is fitted into the recessed hole 3 so as not to be pulled out, and the metal transmission rod to the sector gear 7 is provided in the inner hole 6 of the receiving member 5. An aneroid type pressure gauge, characterized in that the lower end of 8 is inserted. Calendar display device.