CN220081134U - Heavy-duty top-bottom hinge capable of being locked quickly - Google Patents

Abstract

The utility model discloses a heavy-duty top-bottom hinge capable of being locked quickly, which comprises a hinge seat assembly embedded in a cross beam of a cabinet body, wherein the hinge seat assembly comprises a fixed shell; still include the camshaft, the camshaft includes pivot and cam portion, and the pivot rotates to be connected in fixed shell, and the one end of cam portion is formed with the top protruding end that is used for pushing away the inner wall of crossbeam, and one side of fixed shell is formed with dodges the mouth, and cam position corresponds dodges the mouth, and the camshaft can make the top protruding end outwards evaginate the mouth through external force rotation. The fast locking heavy-duty top-bottom hinge is beneficial to ensuring that the fixed shell of the hinge seat assembly is stably installed.

Description

Heavy-duty top-bottom hinge capable of being locked quickly

Technical Field

The utility model relates to the field of a top-bottom hinge, in particular to a heavy top-bottom hinge capable of being quickly locked.

Background

At present, the top-bottom hinge refers to a hinge suitable for being mounted at the lower end and the upper end of a cabinet door, specifically, the top-bottom hinge comprises a hinge seat assembly, a swing arm assembly and a movable assembly, the movable assembly is hinged with the hinge seat assembly through the swing arm assembly, the hinge seat assembly is embedded in a cross beam of the cabinet body, that is, the front end of a shell of the hinge seat assembly is flush with the front side surface of the cross beam, thereby being beneficial to attractive appearance, the movable assembly is embedded in a frame of the cabinet door, and because of limited mounting mode and attractive appearance, only one screw is usually arranged to fix the shell of the hinge seat assembly with the cross beam of the cabinet body, for example, the Chinese utility model with publication number CN216130731U discloses a double-spring heavy top-bottom hinge, the front part of the fixed shell of the double-spring heavy top-bottom hinge is provided with a hole for mounting screw which is in threaded connection with the cross beam; since the fixed housing is easily loosened with respect to the cross member in the case where only one screw is provided, improvement is necessary.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide a fast-locking heavy-duty top-bottom hinge which is beneficial to ensuring that a fixed shell of a hinge seat assembly is stably installed.

The aim of the utility model is achieved by the following technical scheme.

The utility model discloses a fast locking heavy-duty top-bottom hinge, which comprises a hinge seat assembly embedded in a cross beam of a cabinet body, wherein the hinge seat assembly comprises a fixed shell; the cam shaft comprises a rotating shaft and a cam part, the rotating shaft is rotationally connected in the fixed shell, one end of the cam part is provided with a pushing convex end for pushing the inner wall of the cross beam, one side of the fixed shell is provided with an avoidance port, the position of the cam part corresponds to the avoidance port, and the cam shaft can rotate through external force to enable the pushing convex end to outwards protrude out of the avoidance port.

Preferably, the pushing convex end is provided with a tooth slot extending along the direction perpendicular to the rotating shaft.

Preferably, the tooth grooves are arranged at intervals along a direction parallel to the rotating shaft, and extrusion teeth are formed between adjacent tooth grooves.

Preferably, at least two cam portions are integrally connected to the rotating shaft.

Preferably, a front rotation supporting opening is formed in the front end portion of the fixed casing, a rear rotation supporting insertion hole is formed in the rear end portion of the fixed casing, a neck supporting opening is formed between the front rotation supporting opening and the rear rotation supporting insertion hole, a head end is formed at the front end of the cam shaft, a tail end is formed at the rear end of the cam shaft, the head end and the tail end are coaxially arranged with the rotating shaft, the head end is adapted to the front rotation supporting opening, the tail end is adapted to the rear rotation supporting opening, the rotating shaft is adapted to the neck supporting opening, and the neck supporting opening is formed between the adjacent cam portions.

Preferably, the front rotation support opening is arranged to penetrate the fixed housing forwards, and an operation groove for adapting to a screwdriver is formed on the front end face of the head end.

Preferably, the hinge seat assembly comprises a positioning seat and a front positioning screw and a rear positioning screw, an axial positioning ring groove is formed in the front portion of the fixed shell, the front positioning screw and the rear positioning screw are in threaded connection with the positioning seat, a cylindrical nail head is formed at the front end of the front positioning screw and the rear positioning screw, and the nail head is adapted to the axial positioning ring groove.

Compared with the prior art, the utility model has the beneficial effects that: through setting up camshaft including pivot and cam portion, the pivot rotates to be connected in fixed shell, and the one end of cam portion is formed with the top protruding end that is used for pushing away the inner wall of crossbeam, and one side of fixed shell is formed with dodges the mouth, and cam position corresponds dodges the mouth, and the camshaft can rotate through external force and makes the top protruding end outwards evaginate in dodging the mouth, is favorable to making the fixed shell installation of articulated seat subassembly firm.

Drawings

Fig. 1 is a schematic top perspective view of the top-bottom hinge of the present utility model.

Fig. 2 is a bottom exploded view of the top-bottom hinge of the present utility model.

Fig. 3 is a schematic view of a bottom partial perspective view of the top-bottom hinge of the present utility model with the lower shell removed.

Fig. 4 is a schematic perspective sectional view of the fixed housing of the present utility model at the front rotary support port position.

Fig. 5 is a schematic perspective view of a camshaft according to the present utility model.

Fig. 6 is a schematic view showing a state that the top-bottom hinge of the present utility model is mounted on the cross beam.

Fig. 7 is a schematic sectional partial structure in the top view according to fig. 6.

Fig. 8 is a schematic perspective sectional view of the stationary housing of the present utility model in the axial location of the retaining ring groove.

Description of the reference numerals: a hinge base assembly 1; a stationary housing 10; an avoidance port 101; a front rotation support port 102; neck support port 103; rear rotation support hole 104; an axial positioning ring groove 105; a mounting ear 106; an upper case 11; a lower case 12; a swing arm assembly 2; a movable assembly 3; a camshaft 4; a rotation shaft 41; a head end 42; an operation groove 421; tail end 43; a cam portion 44; pushing the male end 441; tooth slot 4411; squeeze teeth 4412; a front-rear positioning screw 5; a nail head 51; a positioning seat 6; and a cross beam 99.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

The quick-locking heavy-duty top-bottom hinge of the present utility model, as shown in fig. 6 and 7, comprises a hinge base assembly 1 embedded in a cross beam 99 of a cabinet body, as shown in fig. 1, the hinge base assembly 1 comprises a fixed housing 10, in other words, as shown in fig. 6, the fixed housing 10 is fixedly connected with the cross beam 99 in a normal use state, and the fixed housing 10 is embedded in the cross beam 99. The fixed shell 10 is internally provided with a positioning component for adjusting the position of the cabinet door, the top-bottom hinge further comprises a swing arm component 2 and a movable component 3, the swing arm component 2 is used for connecting the positioning component with the movable component 3, and the movable component 3 is used for being embedded in the frame of the cabinet door.

As shown in fig. 2, the top-bottom hinge of the present utility model further includes a cam shaft 4, as shown in fig. 5, the cam shaft 4 includes a rotating shaft 41 and a cam portion 44, as shown in fig. 3, the rotating shaft 41 is rotatably connected in the fixed housing 10, as shown in fig. 3, 5 and 7, one end of the cam portion 44 is formed with a pushing convex end 441 for pushing against an inner wall of the cross beam 99, as shown in fig. 1, one side of the fixed housing 10 is formed with a dodging port 101, the dodging port 101 may be formed in a square shape, as shown in fig. 1 to 3, the cam portion 44 is located corresponding to the dodging port 101, as shown in fig. 1 and 7, and the cam shaft 4 can rotate by an external force to make the pushing convex end 441 outwards protrude from the dodging port 101. The pushing convex end 441 is in a shape protruding in a radial direction relative to the cylindrical surface of the rotating shaft 41, and the corresponding other end of the cam portion 44 may be disposed in a co-cylindrical surface with the rotating shaft 41.

In the process of installing the top-bottom hinge, as shown in fig. 6, the movable assembly 3 is installed in the frame of the cabinet door, then the fixed housing 10 is inserted into the hole, which is prefabricated in front of the cross beam 99 and is adapted to be inserted into the fixed housing 10, from front to back, then the installation lug 106 at the front end of the fixed housing 10 is abutted against the concave position at the front of the cross beam 99, then the cam shaft 4 is rotated, the cam part 44 rotates synchronously around the axis of the rotating shaft 41, so that the pushing protruding end 441 has a process of swinging out of the avoiding opening 101 of the fixed housing 10 from inside to outside, as shown in fig. 7, that is, the pushing protruding end 441 swings towards one side inner wall of the cross beam 99, then the pushing protruding end 441 contacts with one side inner wall of the cross beam 99, then the pushing protruding end 441 pushes against the corresponding other side inner wall of the cross beam 99, and the reaction force of the cross beam 99 against the cam part 44 forces the rotating shaft 41 to force the fixed housing 10, so that a strong friction force is formed between the rotating shaft 41 and the inner wall of the fixed housing 10, in other words, the fixed housing 10 is prevented from being locked. For example, the camshaft 4 may be disposed at the left side of the fixed housing 10, so that the right end portion of the fixed housing 10 and the pushing protruding end 441 respectively abut against the inner wall of the cross beam 99, the fixed housing 10 and the cross beam 99 are stably and reliably positioned by the friction force between the pushing protruding end 441 and the right end portion of the fixed housing 10 and the inner wall of the cross beam 99, and the fixed housing 10 is directly supported and positioned by the inner wall of the cross beam 99 in the left-right direction, so that the fixed housing 10 is stably installed, and the phenomenon that the fixed housing 10 and the cross beam 99 are relatively loosened due to collision of the cabinet door in daily use is avoided, and accidental displacement of the cabinet door is also avoided; as shown in fig. 7, a screw is then installed in the conical counterbore on the mounting ear 106, which screw is screwed into the cross beam 99, further securing the mounting of the stationary housing 10. The cam shaft 4 is only required to be rotated by 90 degrees for locking the fixed housing 10, so that the operation is convenient and quick.

Further, as shown in fig. 5, the pushing protruding end 441 is formed with a tooth slot 4411 extending in a direction perpendicular to the rotation axis 41, so as to facilitate increasing the friction between the pushing protruding end 441 and the inner wall of the cross beam 99.

Further, as shown in fig. 5, the tooth grooves 4411 are arranged at intervals in a direction parallel to the rotation shaft 41, and the pressing teeth 4412 are formed between the adjacent tooth grooves 4411; the extrusion teeth 4412 form a larger pressure on the inner wall of the cross beam 99, so that the inner wall of the cross beam 99 can be extruded to enable the inner wall of the cross beam 99 to be plastically deformed to correspondingly form a slight pit, the positioning stability of the cam part 44 by the inner wall of the cross beam 99 can be further enhanced, and as the tooth grooves 4411 are arranged in a direction perpendicular to the rotating shaft 41 in an extending manner, the extrusion teeth 4412 are also arranged in a direction perpendicular to the rotating shaft 41 in an extending manner, so that when the cam shaft 4 is rotated to enable the pushing convex end 441 to swing outwards towards the inner wall of the cross beam 99, the movement direction of the extrusion teeth 4412 is the same as the extending direction of the extrusion teeth 4412, namely, the extrusion teeth 4412 are cut into the inner wall of the cross beam 99, and the extrusion teeth 4412 can swing outwards smoothly to the position contacting the inner wall of the cross beam 99.

Further, as shown in fig. 5, the rotating shaft 41 is integrally connected with at least two cam portions 44, so that the total contact area between the inner wall of the cross beam 99 and the pushing convex end 441 is advantageously increased, and the positioning effect of the inner wall of the cross beam 99 on the fixed housing 10 is further advantageously enhanced.

Further, as shown in fig. 3 and 4, a front rotation support opening 102 is formed in the front end portion of the fixed housing 10, a rear rotation support insertion hole 104 is formed in the rear end portion of the fixed housing 10, a neck support opening 103 is formed between the front rotation support opening 102 and the rear rotation support insertion hole 104, a head end 42 is formed at the front end of the cam shaft 4, a tail end 43 is formed at the rear end of the cam shaft 4, the head end 42 and the tail end 43 are coaxially arranged with the rotation shaft 41, the head end 42 is adapted to be disposed in the front rotation support opening 102, the tail end 43 is adapted to be disposed in the rear rotation support hole 104, the rotation shaft 41 is adapted to be disposed in the neck support opening 103, and the neck support opening 103 is disposed between the adjacent cam portions 44, so that the neck support opening 103 plays an axial positioning role on the rotation shaft 41. As shown in fig. 1 in combination with fig. 2, the fixed housing 10 may include an upper case 11 and a lower case 12, that is, the fixed housing 10 is formed by covering the upper case 11 and the lower case 12 with each other, and a front rotation support opening 102, a neck support opening 103, and a half of a rear rotation support insertion hole 104 are formed in the upper case 11 and the lower case 12, respectively.

Further, as shown in fig. 4, the front rotation support opening 102 is provided to penetrate the fixed housing 10 forward, and as shown in fig. 1 and 5, an operation groove 421 for adapting to a screwdriver is formed on the front end surface of the head end 42, and the operation groove 421 may be a cross groove, so that it is convenient for an installer to view and operate the rotating cam shaft 4.

Further, as shown in fig. 2, the hinge seat assembly 1 includes a positioning seat 6 and a front-rear positioning screw 5, more specifically, the positioning seat 6 and the front-rear positioning screw 5 belong to the positioning assembly mentioned above, as shown in fig. 8, an axial positioning ring groove 105 is formed in the front portion of the fixed housing 10, as shown in fig. 7, the front-rear positioning screw 5 is screwed with the positioning seat 6, as shown in fig. 3 and 7, a cylindrical nail head 5 is formed at the front end of the front-rear positioning screw 5, and the nail head 5 is adapted to be disposed in the axial positioning ring groove 105. The positioning seat 6 is connected in the fixed shell 10 in a front-back sliding way, the swing arm assembly 2 is connected with the positioning seat 6, and then the front-back position of the cabinet door can be adjusted by rotating the front-back positioning screw 5. The positioning component can perform front-back positioning and left-right positioning on the cabinet door, and the more specific working principle of the positioning component can refer to a double-spring heavy-duty top-bottom hinge disclosed in China patent publication No. CN 216130731U. Compared with the conical front and back positioning screw heads in the double-spring heavy-duty top and bottom hinge disclosed by the Chinese utility model with the publication number of CN216130731U, the cylindrical front and back positioning screw head 5 has higher structural strength, better reliability in axial positioning by the axial positioning ring groove 105 and better wear resistance, and is more beneficial to adapting to heavy-duty application environments.

Claims (7)

1. The utility model provides a swift heavy world hinge of locking, includes articulated seat subassembly (1) of embedded installation in crossbeam (99) of the cabinet body, articulated seat subassembly (1) are including fixed shell (10), its characterized in that: still include camshaft (4), camshaft (4) include pivot (41) and cam portion (44), pivot (41) rotate connect in fixed shell (10), the one end of cam portion (44) is formed with the top protruding end (441) that are used for pushing away the inner wall of crossbeam (99), one side of fixed shell (10) is formed with dodges mouth (101), cam portion (44) position corresponds dodge mouth (101), camshaft (4) can rotate through external force and make top protruding end (441) outwards evaginate in dodge mouth (101).

2. The quick-lock heavy-duty top-bottom hinge of claim 1, wherein: the pushing convex end (441) is provided with a tooth groove (4411) extending along the direction perpendicular to the rotating shaft (41).

3. The quick-lock heavy-duty top-bottom hinge of claim 2, wherein: the tooth grooves (4411) are arranged at intervals along the direction parallel to the rotating shaft (41), and extrusion teeth (4412) are formed between adjacent tooth grooves (4411).

4. A quick-lock heavy-duty top-bottom hinge as claimed in claim 3, wherein: at least two cam parts (44) are integrally connected with the rotating shaft (41).

5. The quick-lock heavy-duty top-bottom hinge of claim 4, wherein: the novel cam structure is characterized in that a front rotation supporting opening (102) is formed in the front end portion of the fixed casing (10), a rear rotation supporting hole (104) is formed in the rear end portion of the fixed casing (10), a neck supporting opening (103) is formed between the front rotation supporting opening (102) and the rear rotation supporting hole (104), a head end (42) is formed at the front end of the cam shaft (4), a tail end (43) is formed at the rear end of the cam shaft (4), the head end (42) and the tail end (43) are coaxially arranged with the rotating shaft (41), the head end (42) is adapted to the front rotation supporting opening (102), the tail end (43) is adapted to the rear rotation supporting hole (104), the rotating shaft (41) is adapted to the neck supporting opening (103), and the neck supporting opening (103) is formed between the adjacent cam portions (44).

6. The quick-lock heavy-duty top-bottom hinge of claim 5, wherein: the front rotary support opening (102) is arranged to penetrate the fixed shell (10) forwards, and an operation groove (421) for adapting to a screwdriver is formed on the front end face of the head end (42).

7. The quick-lock heavy-duty top-bottom hinge of claim 1, wherein: the hinge seat assembly (1) comprises a positioning seat (6) and a front positioning screw (5), an axial positioning ring groove (105) is formed in the front portion of the fixed shell (10), the front positioning screw (5) is in threaded connection with the positioning seat (6), a cylindrical nail head (51) is formed at the front end of the front positioning screw (5) and the rear positioning screw, and the nail head (51) is adapted to the axial positioning ring groove (105).