Braking device of measuring instrument and measuring instrument
A technology of a braking device and a measuring device, which is applied in the direction of measuring devices, measuring gauges, and mechanical devices, etc., can solve the problem that the measuring rod 3 lifting mechanism cannot be installed, etc.
Active Publication Date: 2012-10-24
MITUTOYO CORP
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- Application Information
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Problems solved by technology
[0009] However, in the brake device 100 described in Document 1, it is necessary to form the sealed first compartment R1 and the second compartment R2 on the upper part of the main body case 2 where the upper end of the probe rod 3 protrudes, so the probe rod cannot be installed. 3's lifting mechanism, that is, the lifting mechanism that makes the measuring rod 3 rise during measurement
Method used
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Embodiment Construction
[0037] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0038] Description of the structure (refer to Figure 1 ~ Figure 3 )
[0039] Such as figure 1 as well as figure 2 As shown, the dial indicator 1 of this embodiment includes a main body housing 2, a measuring rod 3, a force applying part 4, a displacement detecting part 5, a display part 6 and a braking device 7; It can be arranged in an axially reciprocating displacement manner; the above-mentioned force applying member 4 is directed toward one end side of the measuring rod 3 in the axial direction ( figure 2 middle and lower end side) exert force; the above-mentioned displacement detecting part 5 is used to detect the displacement of the measuring rod 3; the above-mentioned display part 6 is used to display the displacement detected by the displacement detecting part 5 (displacement of the measuring rod 3); The braking device 7 is used to brake the descending...
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The invention provides a braking device of a measuring instrument and the measuring instrument. The measuring instrument includes a body case (2) and a spindle (3) that penetrates the body case (2) to be axially and reciprocably displaceable. The braking device includes a cylinder (71) of which a first end is attached to the body case (2) for accommodating a second end of the spindle (3), a piston (72) provided on the second end of the spindle (3) and accommodated to be reciprocably displaceable within the cylinder (71), a closing member (74) provided on a second end of the cylinder (71) to form a damper chamber (77) between the closing member (74) and the piston (72); a shaft (75) connected to a side of the piston (72) opposite to the spindle (3) and penetrates the closing member (74); and a knob (76) provided on a distal end of the shaft (75). A clearance (78) is provided between the closing member (74) and the shaft (75) to circulate air.
Description
technical field [0001] The present invention relates to a braking device of a measuring instrument and the measuring instrument. More specifically, it relates to a brake device for a measuring rod provided on a housing main body so as to be reciprocally displaceable relative to the housing main body in the axial direction, and a measuring instrument provided with the brake device. Background technique [0002] As the top end (measuring contact) of the measuring rod provided on the housing main body that can be reciprocally displaced in the axial direction relative to the housing main body contacts the measured object, and measures the size of the measured object according to the displacement of the measuring rod at this time, etc. For measuring instruments, for example, dial gauges (mechanical, digital) are known. [0003] In the dial indicator, since the tip of the measuring rod is urged in a direction protruding from the case main body by the biasing member, the measuring...
Claims
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IPC IPC(8): G01B3/22G01B21/02
CPCY10S33/06G01B3/008G01B3/22
Inventor 古田诚足立浩一
Owner MITUTOYO CORP