US 11,852,136 B2
Toggle-type open-close clamping structural assembly and pump head of peristaltic pump
Wei Sun, Hebei (CN); and Xiaopeng Cao, Hebei (CN)
Assigned to BAODING SHENCHEN PRECISION PUMP CO., LTD, Hebei (CN)
Appl. No. 17/626,912
Filed by BAODING SHENCHEN PRECISION PUMP CO., LTD., Hebei (CN)
PCT Filed Jun. 9, 2020, PCT No. PCT/CN2020/095115
§ 371(c)(1), (2) Date Jan. 13, 2022,
PCT Pub. No. WO2021/057090, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 201910933057.X (CN), filed on Sep. 29, 2019.
Prior Publication US 2022/0282727 A1, Sep. 8, 2022
Int. Cl. F04B 53/22 (2006.01); F04B 43/12 (2006.01)
CPC F04B 53/22 (2013.01) [F04B 43/12 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A toggle-type open-close clamping structural assembly, comprising:
a lower tube clamp and an upper tube clamp oppositely arranged to clamp a tube, and including an upper pressing block used for lifting and lowering, and further including a driving lever used for enabling the upper tube clamp to lift or lower slidably with the upper pressing block,
the driving lever is pivotally connected to the upper pressing block, the upper tube clamp and one end of the driving lever are overlappingly disposed in a groove reserved on the upper pressing block, and the other end of the driving lever is abutted against a fixed part, the driving lever swings under an action of the fixed part to lift the upper tube clamp, and the height variation of the upper tube clamp is larger than that of the upper pressing block to generate a relative displacement between the upper tube clamp and the upper pressing block,
wherein the fixed part is disposed on a pump head body, the pump head body slides along the upper pressing block, and a lower edge of the fixed part has a sliding surface for sliding of the driving lever, and in the lifting process of the upper pressing block, the other end of the driving lever slides along the sliding surface, and meanwhile the one end of the driving lever lifts the upper tube clamp.