Weighing apparatus having improved hopper detachability
AssigneeIshida Co., Ltd.
InventorsHideshi Miyamoto, Takashi Kimura
Life of this patent
Estimating the term…
Abstract
To simplify the structure of a hopper side of a weighing apparatus, brackets 24, 34 are fitted to gates 22, 32 of pool hoppers 8 or weighing hoppers 9 and rollers 28, 38 are rotatably provided on extensions 24a, 34a thereof. On a body B side of the weighing apparatus, there are provided operating arms 44, 64 having a forked tip portion, and the rollers 28, 38 fitted to the body B side are engaged so as to be held by the operating arms 44, 64. When the operating arms 44, 64 are rocked about support shafts 43, 63, the gates 22, 32 of the hoppers 8, 9 are rocked about support shafts 25, 35 through the rollers 28, 38 to selectively open and close lower portion discharge openings 21b, 31b.
Claims10
A weighing apparatus comprising:
- a hopper including a hopper body having an upper portion opening and a lower portion provided with a discharge opening and a gate drivingly provided in the hopper body for selectively opening and closing the discharge opening;
- an apparatus body on which the hopper is detachably mounted;
- and
- a drive device mounted entirely on the apparatus body for driving the gates of the hopper to selectively open and close the discharge opening of the hopper body,
- wherein said drive device includes a drive source, a transmission mechanism for transmitting a driving force of the drive source, and an operating member that is driven by the driving force so transmitted by the transmission mechanism T1, T2,
- wherein said gate of the hopper is provided with an engagement portion engageable with the operating member,
- wherein the drive device drives a rocking motion of the operating member through the transmission mechanism, and the rocking motion of the operating member drives a rocking motion of the gate through the engagement portion to selectively open and close the discharge opening of the hopper, and
- wherein the transmission mechanism includes a spring for applying a biasing force to the operating member to cause the operating member to operate in one of opening and closing directions of the gate, thereby opening and closing the gate and a converting mechanism for converting the driving force of the drive source into a power with which the operating member can operate in the other direction against the biasing force, said transmission mechanism, when the gate closes the discharge opening of the hopper, preventing the operating member from being driven by an external force from a gate side to open the discharge opening.
Dependencies are inferred from the claim text.