CN215595304U

CN215595304U - Piston structure of hydraulic door shaft device

Info

Publication number: CN215595304U
Application number: CN202121976506.8U
Authority: CN
Inventors: 赵锦攀
Original assignee: Zhaoqing Yuxing Gated Co ltd
Current assignee: Zhaoqing Yuxing Gated Co ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2022-01-21
Anticipated expiration: 2031-08-20

Abstract

The utility model discloses a piston structure of a hydraulic door spindle device, which comprises a body, wherein a U-shaped groove and a through hole are formed in the front end part of the body, the U-shaped groove is formed in the radial direction of the body, the through hole is formed in the bottom of the U-shaped groove, and a bump is arranged on one side of the U-shaped groove. Through the through hole arranged on the body, the camshaft can be conveniently matched with the shell of the hydraulic camshaft device after penetrating through the body; the U-shaped groove is arranged, so that the cam can be conveniently installed, the side wall of the U-shaped groove can be directly pushed through the cam, the cam drives the piston to move, the clamping teeth are not matched with the clamping teeth, and the service life of the piston is prolonged; through being equipped with the lug, can with the corresponding structural action on the cam, when preventing that the door leaf from closing, the idle running takes place for the cam, has guaranteed the contact of piston with the cam.

Description

Piston structure of hydraulic door shaft device

Technical Field

The utility model belongs to an important component of a closer, and particularly relates to a piston structure of a hydraulic door hinge device.

Background

When the hydraulic door shaft device is used, the door shaft of the door leaf is arranged on the rotating shaft of the cam, the cam is matched with the piston, and the cam is driven to rotate through the rotation of the door and the window. The cam is provided with a rotating tooth, the piston is provided with a latch which is engaged with the rotating tooth, and the cam drives the piston to move through the matching of the rotating tooth and the latch. Therefore, the whole volume of the hydraulic door hinge is smaller, the sizes of the cam and the piston are smaller, the precision requirement for machining the rotary teeth on the cam and the piston is high, and the size is smaller, so that the phenomenon of tooth breakage is easy to occur when the hydraulic door hinge is used, and the service life of the whole hydraulic door hinge is influenced.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to provide a piston structure of a hydraulic door spindle device that solves at least one of the above-mentioned problems.

According to one aspect of the utility model, the piston structure of the hydraulic door hinge device comprises a body, wherein a U-shaped groove and a through hole are formed in the front end portion of the body, the U-shaped groove is formed in the radial direction of the body, the through hole is located at the bottom of the U-shaped groove, and a protruding block is arranged on one side of the U-shaped groove.

The utility model has the beneficial effects that: through the through hole arranged on the body, the camshaft can be conveniently matched with the shell of the hydraulic camshaft device after penetrating through the body; the U-shaped groove is arranged, so that the cam can be conveniently installed, the side wall of the U-shaped groove can be directly pushed through the cam, the cam drives the piston to move, the clamping teeth are not matched with the clamping teeth, and the service life of the piston is prolonged; through being equipped with the lug, can with the corresponding structural action on the cam, when preventing that the door leaf from closing, the idle running takes place for the cam, has guaranteed the contact of piston with the cam.

In some embodiments, the rear end of the body is provided with a mounting hole, the mounting hole is opened along the axial direction of the body, and the mounting hole is positioned on the other side of the U-shaped groove. Therefore, the installation of other structures in the piston can be facilitated by arranging the installation hole.

In some embodiments, the protrusion is integrally formed with the body. Therefore, the bump can be conveniently molded.

In some embodiments, the rear end portion of the body is provided with a sealing band having an outer diameter greater than an outer diameter of the front end portion of the body. From this, through tip is equipped with the sealing strip behind the body, can conveniently set up the front end at the body with U type groove, does benefit to the front end that the cam is close to hydraulic pressure door-hinge ware casing to the distance of cam and door frame has been reduced.

In some embodiments, the top end of the body is provided with an oil hole, the oil hole is communicated with the mounting hole, and the oil hole is positioned between the sealing belt and the U-shaped groove. Therefore, the oil hole is formed, and hydraulic oil can conveniently circulate between the mounting hole and the oil way.

In some embodiments, one end of the lug is fixed on one side of the U-shaped groove, and the end surface of the other end of the lug is arc-shaped. Therefore, the other end of the convex block is arc-shaped, so that the friction force generated when the cam rotates can be reduced, and the stable action of the piston and the cam is ensured.

Drawings

Fig. 1 is a schematic structural view of a piston structure of a hydraulic door hinge of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Refer to fig. 1. Piston structure of hydraulic pressure door-hinge ware, including body 1, the preceding tip of body 1 is equipped with U type groove 11 and through-hole 12, and U type groove 11 is seted up along body 1's radial direction, and through-hole 12 is located the bottom in U type groove 11, is equipped with lug 13 on one side in U type groove 11. Wherein the body 1 is cylindrical; the width of the U-shaped groove 11 along the axial direction of the body 1 is larger than that of the through hole 12, so that the cam is conveniently installed on the U-shaped groove 11; the camshaft is matched with the shell of the hydraulic camshaft device after penetrating through the through hole 12. In the opening process of the door leaf, the external cam is matched with the other side of the U-shaped groove 11 to push the piston to move, so that the matching of the latch and the latch in the prior art is replaced, and the service life of the whole door leaf is prolonged. When the door leaf is closing the in-process, the cam structure cooperatees with lug 13, has guaranteed body 1 and cam and has kept the contact state, has effectively prevented external cam from taking place idle running.

The rear end of the body 1 is provided with a mounting hole 14, the mounting hole 14 is opened along the axial direction of the body 1, and the mounting hole 14 is positioned on the other side of the U-shaped groove 11. By providing the mounting hole 14, the mounting of other structures such as a safety valve in the piston can be facilitated.

The bump 13 and the body 1 are integrally formed, so that the molding processing of the bump 13 can be facilitated.

The rear end of the body 1 is provided with a sealing strip 15, and the outer diameter of the sealing strip 15 is larger than that of the front end of the body 1. Therefore, the sealing belt 15 is arranged, so that the oil chambers on the front side and the rear side of the body 1 can be conveniently separated; through being equipped with sealing strip 15 at body 1 rear end portion, can conveniently set up U type groove 11 at the front end of body, do benefit to the front end that the cam is close to hydraulic pressure door-hinge ware casing to reduce the distance of cam and door frame, when having reduced the door leaf greatly and opening, the clearance between door leaf and the door frame improves the security.

The top end of the body 1 is provided with an oil hole 16, the oil hole 16 is communicated with the mounting hole 14, and the oil hole 16 is positioned between the sealing belt 15 and the U-shaped groove 11. Therefore, the oil hole 16 is arranged, and hydraulic oil can conveniently circulate between the mounting hole and the oil path.

One end of the convex block 13 is fixed at one side of the U-shaped groove 11, and the end surface of the other end is arc-shaped. Therefore, the other end of the convex block 13 is arc-shaped, so that the friction force generated when the cam rotates can be reduced, and the stable action of the piston and the cam is ensured.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the inventive concept of the present invention, which falls into the protection scope of the present invention.

Claims

1. Piston structure of hydraulic pressure door-hinge ware, its characterized in that includes body (1), the front end portion of body (1) is equipped with U type groove (11) and through-hole (12), U type groove (11) are seted up along the radial direction of body (1), through-hole (12) are located the bottom in U type groove (11), be equipped with lug (13) on one side in U type groove (11).

2. The piston structure of the hydraulic door hinge device according to claim 1, characterized in that the rear end of the body (1) is provided with a mounting hole (14), the mounting hole (14) is opened along the axial direction of the body (1), and the mounting hole (14) is positioned at the other side of the U-shaped groove (11).

3. The piston structure of a hydraulic camshaft device as claimed in claim 1 or 2, characterized in that the cam (13) is of one-piece construction with the body (1).

4. The piston structure of a hydraulic camshaft device as claimed in claim 3, characterized in that the rear end of the body (1) is provided with a sealing band (15), the sealing band (15) having an outer diameter greater than the outer diameter of the front end of the body (1).

5. The piston structure of the hydraulic door hinge device according to claim 4, characterized in that the top end of the body (1) is provided with an oil hole (16), the oil hole (16) is communicated with the mounting hole (14), and the oil hole (16) is positioned between the sealing strip (15) and the U-shaped groove (11).

6. The piston structure of the hydraulic door hinge device according to claim 1 or 2, characterized in that one end of the projection (13) is fixed on one side of the U-shaped groove (11), and the end surface of the other end is arc-shaped.