Mandrel structure of hydraulic hinge

Abstract

The mandrel structure of the hydraulic hinge comprises a mandrel, a spring, a hydraulic device, a connector, a transmission sleeve and a pin shaft, the mandrel is of a hollow structure, the spring, the hydraulic device and the connector are all arranged in the mandrel, the spring and the hydraulic device abut against the two ends of the connector respectively, a spiral groove is formed in the side wall of the mandrel, and the two ends of the mandrel penetrate through the connector and then are connected with the transmission sleeve. The two ends of the central spindle are matched with the transmission sleeve, and the transmission sleeve is arranged on the outer side of the central spindle in a sleeving mode. Structures such as the spring and the hydraulic press are directly mounted in the mandrel, and the pin shaft penetrating through the connector is matched with the transmission sleeve, so that during use, the pin shaft can be driven to rotate along the spiral groove under the action of the hydraulic press and the spring, the pin shaft acts on the transmission sleeve, rotation of the transmission sleeve is realized, and an external hinge on the transmission sleeve is driven to rotate; or the hinge drives the transmission sleeve to rotate, and the mandrel is kept still; the whole mandrel is simple in structure and convenient to assemble, so that the production cost of the whole mandrel is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to an important component of hydraulic hinge, in particular to a core shaft structure of hydraulic hinge. BACKGROUND

[0002] Hydraulic hinge is widely used, most of which is used for door and window opening and closing speed buffer and has automatic door closing function. However, most of the existing hydraulic hinges have complex core shaft structure, and the core shaft rotates synchronously when the hinge rotates. For example, a hydraulic hinge disclosed in application No. 202122790809.7 includes a center shaft, a piston, a piston sleeve and a sleeve pipe. When the hinge rotates, the sleeve pipe rotates synchronously. The core shaft structure has many components, is complex, difficult to assemble and high in cost. SUMMARY

[0003] The utility model aims at providing a core shaft structure of hydraulic hinge which can solve at least one of the above problems.

[0004] According to one aspect of the utility model, a core shaft structure of hydraulic hinge is provided, which includes a core shaft, a spring, a hydraulic device, a connecting head, a transmission sleeve and a pin shaft. The core shaft is a hollow structure. The spring, the hydraulic device and the connecting head are arranged in the core shaft. The spring and the hydraulic device abut the two ends of the connecting head respectively. The side wall of the core shaft is provided with a spiral groove. The two ends of the core shaft penetrate through the connecting head and then the spiral groove. The two ends of the core shaft are matched with the transmission sleeve, and the transmission sleeve is arranged outside the core shaft.

[0005] The utility model has the advantages that the spring, the hydraulic device and other structures are directly arranged in the core shaft, and the pin shaft penetrating through the connecting head is matched with the transmission sleeve. Therefore, when in use, the pin shaft can be driven to rotate along the spiral groove by the action of the hydraulic device and the spring, the pin shaft acts on the transmission sleeve, thereby realizing the rotation of the transmission sleeve, driving the hinge connected to the transmission sleeve to rotate, or driving the hinge to rotate while the core shaft remains stationary. The core shaft structure is simple and easy to assemble, thereby reducing the production cost of the core shaft.

[0006] In some embodiments, the outer side of the core shaft is provided with a mounting groove, the transmission sleeve includes a first half-open sleeve and a second half-open sleeve, the first half-open sleeve and the second half-open sleeve are arranged opposite to each other and are both arranged outside the mounting groove, and the two ends of the pin shaft are matched with the first half-open sleeve and the second half-open sleeve respectively. In this way, the two half-open sleeves can be conveniently arranged outside the mounting groove.

[0007] In some embodiments, the core shaft structure of the hydraulic hinge further comprises a first ball, and the first ball is arranged at the contact position between one side wall of one side of the mounting groove and one end of the transmission sleeve. Thus, the first ball can reduce the friction force when the transmission sleeve rotates, and facilitate the rotation of the transmission sleeve.

[0008] In some embodiments, the core shaft structure of the hydraulic hinge further comprises a second ball, and the second ball is arranged at the contact position between the other side wall of the other side of the mounting groove and the other end of the transmission sleeve. Thus, the second ball can reduce the friction force when the transmission sleeve rotates, and facilitate the rotation of the transmission sleeve.

[0009] In some embodiments, the transmission sleeve is provided with a clamping tooth on the outer side. Thus, the clamping tooth can facilitate the close cooperation between the transmission sleeve and the external hinge structure, and facilitate the synchronous rotation of the transmission sleeve and the external hinge structure.

[0010] In some embodiments, vertical grooves are arranged on the first half-open sleeve and the second half-open sleeve, and the two ends of the pin shaft are respectively inserted into the vertical grooves on the corresponding side. Thus, the vertical grooves can facilitate the upward or downward movement of the pin shaft under the action of the spring and the hydraulic device.

[0011] In some embodiments, the core shaft structure of the hydraulic hinge further comprises a mounting end cover, the mounting end cover is threadedly connected with the core shaft, and the mounting end cover abuts against the spring. Thus, the mounting end cover can facilitate the limiting installation of the spring in the core shaft.

[0012] In some embodiments, the core shaft structure of the hydraulic hinge further comprises an end cover, and the end cover is matched with the core shaft. Thus, the end cover can facilitate the limitation of the hydraulic device in the core shaft.

[0013] In some embodiments, the core shaft structure of the hydraulic hinge further comprises an adjusting screw, the adjusting screw abuts against the bottom of the hydraulic device after penetrating through the end cover, and the adjusting screw is threadedly connected with the end cover. Thus, the adjusting screw can adjust the lifting position of the hydraulic device, so as to adjust the corresponding acting force of the hydraulic device and meet different use requirements. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 is a structural schematic view of the core shaft structure of the hydraulic hinge of the utility model;

[0015] Fig. 2 is a sectional view of the core shaft structure of the hydraulic hinge of the utility model;

[0016] Fig. 3 is a structural schematic view of the core shaft in the core shaft structure of the hydraulic hinge of the utility model;

[0017] Fig. 4It is the structural schematic view of the transmission sleeve in the core shaft structure of the hydraulic hinge. DETAILED DESCRIPTION

[0018] The utility model will be further explained in detail below in combination with the drawings.

[0019] Reference Figs. 1-4 The core shaft structure of the hydraulic hinge comprises a core shaft 1, a spring 2, a hydraulic device 3, a connecting head 4, a transmission sleeve 5 and a pin shaft 6, the core shaft 1 is of a hollow structure, the spring 2, the hydraulic device 3 and the connecting head 4 are all arranged in the core shaft 1, the spring 2 and the hydraulic device 3 abut the two ends of the connecting head 4 respectively, the side wall of the core shaft 1 is provided with a helical groove 11, the two ends of the core shaft 1 penetrate through the connecting head 4 and then the helical groove 11, the two ends of the core shaft 1 are matched with the transmission sleeve 5, and the transmission sleeve 5 is arranged outside the core shaft 1.

[0020] In actual use, the hydraulic device 3 can be a hydraulic cylinder or a damper, etc., to meet different use requirements; through the spring 2 and the hydraulic device 3 acting on the two ends of the connecting head 4 respectively, when the connecting head 4 moves to the side of the spring 2 under the action of the hydraulic device 3, the connecting head 4 drives the pin shaft 6 to move to the side of the spring 2 together, that is, the pin shaft 6 moves to the side of the spring 2 along the helical groove 11; since the pin shaft 6 is matched with the transmission sleeve 5, the transmission sleeve 5 is driven to rotate under the action of the pin shaft 6. Similarly, when the connecting head 4 moves to the side of the hydraulic device 3 under the action of the spring 2, the connecting head 4 drives the pin shaft 6 to move to the side of the hydraulic device 3 together, so that the pin shaft 6 drives the transmission sleeve 5 to rotate reversely. Thus, in use, the core shaft 1 does not need to rotate, only the transmission sleeve 5 needs to rotate, and the whole installation structure is simple.

[0021] The outside of the core shaft 1 is provided with a mounting groove 12, the transmission sleeve 5 comprises a first half-open sleeve 51 and a second half-open sleeve 52, the first half-open sleeve 51 and the second half-open sleeve 52 are oppositely arranged and are both arranged outside the mounting groove 12, and the two ends of the pin shaft 6 are matched with the first half-open sleeve 51 and the second half-open sleeve 52 respectively. Among them, the mounting groove 12 is located at the middle position of the core shaft 1 and forms a recess inwardly; the first half-open sleeve 51 and the second half-open sleeve 52 are arranged outside the two sides of the mounting groove 12 respectively, and the joint of the first half-open sleeve 51 and the second half-open sleeve 52 is fixed by gluing, so that the transmission sleeve 5 forms a whole.

[0022] The core shaft structure of the hydraulic hinge further comprises a first ball 7, one end of the transmission sleeve 5 is provided with the first ball 7 at the contact position of the side wall of one side of the mounting groove 12. Among them, the first ball 7 is a plurality of.

[0023] The core shaft structure of the hydraulic hinge further comprises a second ball 8, the other end of the transmission sleeve 5 is provided with the second ball 8 at the contact position of the side wall of the other side of the mounting groove 12. Among them, the second ball 8 is a plurality of.

[0024] In actual installation, in order to facilitate the installation of the first ball 7 and the second ball 8, a first groove is formed on the two side walls of the installation groove 12, and a second groove is formed on the two ends of the first half-open sleeve 51 and the second half-open sleeve 52, and the first ball 7 and the second ball 8 are clamped between the corresponding first groove and second groove. By providing the first ball 7 and the second ball 8, the frictional force received by the transmission sleeve 5 during rotation can be reduced, the wear of the transmission sleeve 5 can be reduced, and the load bearing capacity of the transmission sleeve 5 can be improved.

[0025] The outer side of the transmission sleeve 5 is formed with a clamping tooth 53. Thus, by providing the clamping tooth 53, the transmission sleeve 5 and the externally connected hinge structure are conveniently clamped and matched through the clamping tooth 53, and the transmission sleeve 5 and the hinge are conveniently rotated synchronously.

[0026] The first half-open sleeve 51 and the second half-open sleeve 52 are both provided with a vertical groove 54, and the two ends of the pin shaft 6 are respectively inserted into the vertical groove 54 on the corresponding side. Thus, by providing the vertical groove 54, the pin shaft 6 passes through the vertical groove 54, and the cooperation between the pin shaft 6 and the transmission sleeve 5 is realized.

[0027] The core shaft structure of the hydraulic hinge further comprises an installation end cover 9, the outer side of the installation end cover 9 is provided with an external thread, the inner wall of the core shaft 1 is provided with an internal thread matched with the external thread, the installation end cover 9 is threadedly matched with the core shaft 1, and the installation end cover 9 abuts against the spring 2. Therefore, during installation, the spring 2 can be positioned and installed by screwing the installation end cover 9, and the spring 2 can be conveniently kept in the core shaft.

[0028] The core shaft structure of the hydraulic hinge further comprises an end cover 10, and the end cover 10 is matched with the core shaft 1. The end cover 10 is also threadedly matched with the core shaft 1, the end cover 10 is provided, the hydraulic device 3 can be ensured to be always located in the core shaft 1, and the hydraulic device 3 can be conveniently loaded into the core shaft 1.

[0029] The core shaft structure of the hydraulic hinge further comprises an adjusting screw 20, the adjusting screw 20 penetrates through the end cover and abuts against the bottom of the hydraulic device 3, and the adjusting screw 20 is threadedly matched with the end cover 10. Therefore, during use, the compression degree of the hydraulic device 3 on the connecting head can be adjusted by rotating the adjusting screw 20, the adjustment of the damping force of the door and window opening and closing is facilitated, and the use requirements of different scenes are met.

[0030] The above is only a preferred embodiment of the utility model, and it should be pointed out that, for ordinary skilled persons in the art, without departing from the creative concept of the utility model, a plurality of deformations and improvements can be made, which all belong to the protection range of the utility model.

Claims

1. A spindle construction for a hydraulic hinge, characterized in that It includes a mandrel (1), a spring (2), a hydraulic device (3), a connecting head (4), a transmission sleeve (5) and a pin shaft (6), the mandrel (1) is a hollow structure, the spring (2), the hydraulic device (3) and the connecting head (4) are arranged in the mandrel (1), the spring (2) and the hydraulic device (3) are respectively in contact with the two ends of the connecting head (4), the side wall of the mandrel (1) is provided with a spiral groove (11), the two ends of the mandrel (1) penetrate through the connecting head (4) and then penetrate through the spiral groove (11), the two ends of the mandrel (1) are matched with the transmission sleeve (5), and the transmission sleeve (5) is arranged outside the mandrel (1).

2. The hydraulic hinge mandrel structure of claim 1, wherein, The outside of the mandrel (1) is provided with a mounting groove (12), the transmission sleeve (5) includes a first half-open sleeve (51) and a second half-open sleeve (52), the first half-open sleeve (51) and the second half-open sleeve (52) are arranged opposite to each other and are both arranged outside the mounting groove (12), and the two ends of the pin shaft (6) are matched with the first half-open sleeve (51) and the second half-open sleeve (52) respectively.

3. The hydraulic hinge mandrel structure of claim 2, wherein, It also includes a first ball (7), one end of the transmission sleeve (5) is provided with the first ball (7) at the contact position of the side wall of one side of the mounting groove (12).

4. The hydraulic hinge mandrel structure of claim 3, wherein, It also includes a second ball (8), the other end of the transmission sleeve (5) is provided with the second ball (8) at the contact position of the side wall of the other side of the mounting groove (12).

5. The hydraulic hinge core shaft structure according to any one of claims 1 to 4, characterized in that, The outside of the transmission sleeve (5) is provided with a clamping tooth (53).

6. Hydraulic hinge core shaft structure according to any of claims 2 to 4, characterized in that The first half-open sleeve (51) and the second half-open sleeve (52) are both provided with a vertical groove (54), and the two ends of the pin shaft (6) respectively extend into the vertical groove (54) on the corresponding side.

7. The hydraulic hinge mandrel structure according to any one of claims 1 to 4, characterized in that It also includes a mounting end cover (9), the mounting end cover (9) is threadedly connected with the mandrel (1), and the mounting end cover (9) is in contact with the spring (2).

8. The hydraulic hinge mandrel structure of claim 7, wherein, It also includes an end cover (10), the end cover (10) is matched with the mandrel (1).

9. The hydraulic hinge mandrel structure of claim 8, wherein, It also includes an adjusting screw (20), the adjusting screw (20) penetrates through the end cover and is in contact with the bottom of the hydraulic device (3), and the adjusting screw (20) is threadedly connected with the end cover (10). It also includes an adjusting screw (20), the adjusting screw (20) penetrates through the end cover and is in contact with the bottom of the hydraulic device (3), and the adjusting screw (20) is threadedly connected with the end cover (10).

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