Weigh module with parallel-guiding mechanism module

Patent metadata

Field	Value
Publication number	US-10156470-B2
Application number	US-201615320915-A
Country	US
Kind code	B2
Filing date	May 23, 2016
Priority date	May 26, 2015
Publication date	Dec 18, 2018
Grant date	Dec 18, 2018

Abstract

A parallel-guiding mechanism in accordance with the present invention comprises a load-receiving portion for receiving a load of a to be weighed object; a fixing portion including an end portion, an extending portion extending forwardly from the end portion and mounting portions extending forwardly from the extending portion, and parallel-guiding members connecting the load-receiving portion to the fixing portion. The mounting portions include a first mounting portion and a second mounting portion. A receiving space is formed between the first mounting portion, the second mounting portion and the extending portion for receiving at least a portion of the load-receiving portion. A containing space for receiving the extending portion is formed between the parallel-guiding members, the load-receiving portion and the end portion. The parallel-guiding members include an upper parallel-guiding member and a lower parallel-guiding member. The load-receiving portion, the fixing portion and the parallel-guiding members are formed integrally of one piece of solid material.

First claim

The invention claimed is:

1. A parallel-guiding mechanism comprising:
a load-receiving portion for receiving a load of an object;
a fixing portion, comprising:
an end portion;
an extending portion extending forwardly from the end portion; and
a first mounting portion and a second mounting portion, each of which extends forwardly from the extending portion, and

parallel-guiding members that connect the load-receiving portion to the fixing portion,
wherein a containing space, in which the extending portion is disposed, is formed between the parallel-guiding members, the load-receiving portion and the end portion;
wherein a first receiving space for receiving at least a portion of the load-receiving portion is formed between the first mounting portion and the extending portion and a second receiving space for receiving at least a portion of the load-receiving portion is formed between the second mounting portion and the extending portion;
wherein the load-receiving portion, the fixing portion and the parallel-guiding members are formed integrally of one piece of solid material; and
wherein a split hole that connects the first receiving space with the second receiving space is formed in the containing space between the load-receiving portion and the extending portion.

2. The mechanism according to claim 1 , further comprising:
a first mounting face formed on a front face of the first mounting portion;
a second mounting face formed on a front face of the second mounting portion; and
a third mounting face formed on a front face of the load-receiving portion,
wherein the first mounting face is coplanar with the second mounting face and the third mounting face is non-coplanar with the first and second mounting faces.

3. The mechanism according to claim 2 , wherein:
the front face of the first mounting portion and the front face of the second mounting portion are step shaped, wherein the first mounting face and the second mounting face are offset inwardly from the front face.

4. The mechanism according to claim 3 , wherein:
the load-receiving portion includes a main portion and an attachment portion extending forwardly from the main portion, and a connecting portion extending upwardly from the main portion, wherein the cross sectional area of the attachment portion is smaller than that of the main portion.

5. The mechanism according to claim 1 , wherein the load-receiving portion is disposed wholly in the receiving space.

6. The mechanism according to claim 1 , wherein:
both ends of the upper parallel-guiding member have first grooves and both ends of the lower parallel-guiding member have second grooves, wherein each of the first and the second grooves is arc-shaped or square-shaped.

7. The mechanism according to claim 6 , wherein at least one of the following occurs:
a first opening divides at least one first groove into two parts; and
a second opening divides at least one second groove into two parts.

8. The mechanism according to claim 1 , wherein the width of the parallel-guiding members near the end portion is wider than the width near the load-receiving portion.

9. A weigh module comprising:
a lever;
a parallel-guiding mechanism according to claim 1 ;
a force transmitting member connecting the load-receiving portion of the parallel-guiding mechanism to the lever; and
at least two fulcrum members connecting the first and second mounting portions of the parallel-guiding mechanism to the lever.

10. The weigh module according to claim 9 , wherein the lever is a symmetrical frame structure.

11. The weigh module according to claim 10 , wherein the lever comprises:
a main portion and
an internal calibration supporting member,
wherein either: the main portion and the internal calibration supporting member are formed integrally of one piece of solid material, or the internal calibration supporting member is connected to the load-receiving portion.

12. The weigh module according to claim 9 , further comprising a calibration driving member with a calibration weight that can be placed on the internal calibration supporting member.

13. An electronic balance comprising a weight module according to claim 9 .

Assignees

• Mettler Toledo Gmbh

Inventors

• Yang Chun
• Wu Chao
• Xu Feng
• Sun Weixiang
• Bian Naifeng
• Burkhard Hans-Rudolf

Classifications

• G01G21/244 Primary

  combined with flexure-plate fulcrums (flexure-plate fulcrums G01G21/07) · CPC title