CN202199725U

CN202199725U - Caliper core with grappling claw

Info

Publication number: CN202199725U
Application number: CN2011202808503U
Authority: CN
Inventors: 赵景洪; 江浩
Original assignee: Huangshi Dongbei Electrical Appliance Co Ltd
Current assignee: Huangshi Dongbei Electrical Appliance Co Ltd
Priority date: 2011-08-04
Filing date: 2011-08-04
Publication date: 2012-04-25
Anticipated expiration: 2021-08-04

Abstract

The utility model relates to a caliper core with a grappling claw, which is provided with the caliper core. A grappling claw core in ''7'' shape is arranged at the arc back of the caliper core. Grappling claw forming cavities are respectively arranged at left and right sides of the head of the grappling claw core. In the utility model, the grappling claw is contained in the caliper core to improve the strength of sand mould below the grappling claw and prevent slight shrinkage of the arc back of the caliper core; the utility model reduces the grinding workload of the caliper, in particular a fin on the channel of a frictional piece in the arc back; increases the positioning surface of the caliper core and prevents the cylinder hole from being thickened; the outer ring of the core is not on the contact surface of the caliper so that when slight damage or collision occurs around the sand, the cast quality of the caliper will not affected.

Description

Contain the caliper body core that colludes pawl

The (1) technical field: the utility model relates to the brake system of car foundry goods, particularly contains the caliper body core that colludes pawl.

The (2) background technology: existing caliper body core has been merely the core print position that makes cylinder hole and cylinder hole annex, and its location area is less, and the location is stable inadequately; Be prone to the thick variation of cylinder hole wall and cause processing casting skin or the bigger problem state of allowance; Owing to be little core, and the core edge is fully in caliper body arc back of the body scope, when core outer ring local damage or collsion damage; Cause fleshiness on the foundry goods easily, increase polishing patch work amount; When moulding and since collude pawl to the molding sand filling stop that arc back of the body place sand mold compactability is not enough, cause caliper body slight shrinkage porosite even shrinkage cavity defect to occur at arc back of the body place.

The (3) summary of the invention: the purpose of the utility model is improved above shortcoming exactly.Propose a kind ofly can improve the intensity of colluding pawl below sand mold, prevent that the caliper body arc from carrying on the back slight shrinkage porosite; Reduce caliper body polishing workload; Increase caliper body core locating surface, prevent the thick variation of cylinder hole wall, improve the caliper body casting quality.

The utility model contains the caliper body core that colludes pawl, has the caliper body core, it is characterized in that: be provided with at the arc back of caliper body core and collude the pawl core, collude the pawl core and be 7 fonts, the right and left that colludes the head of pawl core respectively has one and colludes the pawl forming cavity.

The utility model will collude in the core that pawl is included in caliper body, can improve the intensity of colluding pawl below sand mold, prevent that the caliper body arc from carrying on the back slight shrinkage porosite; Fash on the passage of the friction plate in the polishing of minimizing the caliper body workload, particularly the arc back of the body; Increase caliper body core locating surface, prevent the thick variation of cylinder hole wall; The core outer ring all not on the caliper body contact-making surface, when peripheral slight breakage of core or collision, can not have influence on the caliper body casting quality.

The (4) description of drawings

Fig. 1 is existing caliper body sand core structure sketch map;

Fig. 2 is the front view of the utility model;

Fig. 3 is the A-A cutaway view of front view;

Among the figure, 1-caliper body core, 2-colludes the pawl core, and 3-colludes the pawl forming cavity.

The (5) specific embodiment:

Referring to Fig. 1, Fig. 2, the concrete scheme of the utility model is: have caliper body core 1, be provided with at the arc back of caliper body core 1 and collude pawl core 2, collude pawl core 2 and be 7 fonts, the right and left that colludes the head of pawl core 2 respectively has one and colludes pawl forming cavity 3.

Claims

1. contain the caliper body core that colludes pawl, have the caliper body core, it is characterized in that: be provided with at the arc back of caliper body core and collude the pawl core, collude the pawl core and be 7 fonts, the right and left that colludes the head of pawl core respectively has one and colludes the pawl forming cavity.