CN220365448U

CN220365448U - Small torsion spring type hinge

Info

Publication number: CN220365448U
Application number: CN202321609126.XU
Authority: CN
Inventors: 杨朝伟; 莫陆坪
Original assignee: Guangdong Dingtai Electric Appliance Co ltd
Current assignee: Guangdong Dingtai Electric Appliance Co ltd
Priority date: 2023-06-21
Filing date: 2023-06-21
Publication date: 2024-01-19
Anticipated expiration: 2033-06-21

Abstract

The utility model discloses a small torsion spring type hinge, which comprises: the rotary arm is rotatably connected with the fixed frame through a rotary shaft group, and a torsion spring is arranged at the rotary shaft group; the rotating shaft group comprises: the limiting shaft sleeve and the output rivet can rotate relatively; the first end of the limiting shaft sleeve is provided with a straight tooth a, and the first end of the limiting shaft sleeve is installed in the rotating shaft hole a of the fixed frame in an interference fit manner; the first end of the output flower rivet is provided with a straight tooth b, the first end of the output flower rivet is installed in the rotating shaft hole b of the rotating arm in an interference fit mode, and the limiting shaft sleeve is spliced with the second end of the output flower rivet. The utility model is applied to a small opening and closing panel, and has the characteristics of small volume, low cost, easy opening and closing, easy assembly and long service life; the torsion springs matched with the hinges are twisted in the opening and closing process, and the torsion generated by twisting the corresponding torsion springs reaches a balanced state with the gravity corresponding to the opening and closing panel, so that the dynamic balance of the hinges realizes the suspension function in the opening and closing process.

Description

Small torsion spring type hinge

Technical Field

The utility model relates to the technical field of hinges, in particular to a small torsion spring type hinge.

Background

Hinges are also known as mechanical devices for connecting two solids and allowing them to rotate relative to each other, and are used for different types of products, and applicant has developed various structures for oven type products, such as chinese patent numbers: 202220804745.3, an external damped hinge is disclosed, comprising: the hinge main part and swinging head, the outside external attenuator of detachable assembly of hinge main part, external attenuator includes: damper bracket and damper; the swinging head has an unfolding state and a closing state relative to the hinge main body; in the process of switching from the unfolding state to the closing state, the swinging head is in contact with the damper and compresses the damper, so that the swinging head is slowly closed. As further chinese patent No. 202121478616.1, a high-load-bearing dual-compression spring horizontal hinge is disclosed, comprising: hinge shell, rotatable swing arm, main pressure spring subassembly and the inner support subassembly of connecting in hinge shell front end, assembly in the inside main pressure spring subassembly of hinge shell, main pressure spring subassembly includes: a main compression spring and a main compression spring guide rod; the swing arm is connected with the main pressure spring through an inner bracket assembly, the hinge shell is divided into a first installation section and a second installation section which are distributed in a straight line, the inner bracket assembly is assembled in the first installation section, and the main pressure spring is assembled in the second installation section; the joint of the first mounting section and the second mounting section forms a supporting surface, one end of the main compression spring is propped against the supporting surface, and the other end of the main compression spring is limited at the second mounting section; the first installation section and the second installation section are respectively arranged in a pressed shape at the joint close to the first installation section and the second installation section. The two prior arts are applicable to oven type products, and have large bearing capacity, the whole structure of the hinge is relatively complex, the volume is large, and the cost is high;

for some small opening and closing panels on the market, the high-load-bearing hinge in the prior art is not needed, and the applicant specially develops the hinge for the small opening and closing panel and puts forward the following patent application.

Disclosure of Invention

In view of this, the present utility model provides a small torsion spring hinge.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: a miniature torsion spring hinge comprising: the rotary arm is rotatably connected with the fixed frame through a rotary shaft group, and a torsion spring is arranged at the rotary shaft group; the rotating shaft group comprises: the limiting shaft sleeve and the output rivet are sleeved with each other, and can rotate relatively; the first end of the limiting shaft sleeve is provided with a straight tooth a, and the first end of the limiting shaft sleeve is installed in the rotating shaft hole a of the fixed frame in an interference fit manner; the first end of the output flower rivet is provided with a straight tooth b, the first end of the output flower rivet is installed in the rotating shaft hole b of the rotating arm in an interference fit mode, and the limiting shaft sleeve is spliced with the second end of the output flower rivet.

As a preferred aspect of the present utility model, the fixed frame includes: the rotary arm is symmetrical with the first support plate in position, and the second support plate is located between the first support plate and the rotary arm.

As a preferable scheme of the utility model, the rotating arm is provided with a limiting part, and the limiting part is protruded perpendicular to the direction of the rotating arm relative to the first supporting plate; the limiting part is abutted with the second supporting plate when the rotating arm rotates to the maximum angle relative to the fixed frame.

As a preferable scheme of the utility model, the second supporting plate is provided with a profiling position a, and the inclined convex surface of the profiling position a corresponds to the limiting part.

As a preferable scheme of the utility model, a small hole is formed in the first supporting plate, the torsion spring is sleeved outside the limiting shaft sleeve, one end of the torsion spring is limited in the small hole, the other end of the torsion spring is limited by the limiting part, and the deformation of the torsion spring is tightly attached to the limiting part when the rotating arm is opened.

As a preferable scheme of the utility model, the top of the second supporting plate extends away from the first supporting plate, and the top of the second supporting plate is provided with a profiling position b.

As a preferred aspect of the present utility model, a positioning pin is further included.

As a preferable scheme of the utility model, a pin hole is arranged at the rotating arm, and the positioning pin horizontally penetrates through the pin hole and is in contact with the second supporting plate to limit the rotating arm.

Compared with the prior art, the utility model has the following beneficial technical effects:

1. the hinge is applied to a small opening and closing panel, and has the characteristics of small volume, low cost, easy opening and closing, easy assembly and long service life;

2. the limiting shaft sleeve of the hinge is provided with the straight teeth a, the straight teeth a are in interference fit with the rotating shaft hole a of the fixed frame, the complete constraint state is realized, the limiting shaft sleeve plays a guiding and supporting role when the output rivet and the torsion spring are in a moving state and a static state, the rigidity of the whole mechanism is improved, torsion and inclination phenomena caused by torsion and force application of the torsion spring in the moving state and the static state are eliminated, and the stability of the mechanism in the moving state and the static state is improved.

3. The output rivet of the hinge provided by the utility model is provided with the embossed straight teeth b, the straight teeth b are in interference fit with the rotating shaft hole of the rotating arm, so that a complete constraint state is realized, the output rivet is used as a rotating output part, the rotating freedom degree of the limiting shaft sleeve is reserved, the stability of the rotating arm during dynamic output is improved, and the hinge achieves the functions of torsion and non-tilting in the opening and closing process;

4. the torsion spring matched with the hinge disclosed by the utility model twists the torsion spring in the opening and closing process, and the torsion force generated by the twisting of the corresponding torsion spring reaches an equilibrium state with the gravity corresponding to the opening and closing panel, so that the dynamic balance of the hinge realizes the suspension function in the opening and closing process.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a small torsion spring hinge of the present utility model with a locating pin mounted thereon;

FIG. 2 is a schematic view 1 of the maximum opening angle of the rotating arm of the small torsion spring type hinge of the present utility model;

FIG. 3 is an exploded view of the small torsion spring hinge of the present utility model;

FIGS. 4 and 5 are schematic views of the small torsion spring hinge of the present utility model at different angles between the rotating arm and the fixed frame by the positioning pin;

fig. 6 is a schematic view 2 of the maximum opening angle of the rotating arm of the small torsion spring type hinge of the present utility model.

Detailed Description

The utility model will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the utility model and therefore show only the structures which are relevant to the utility model.

A miniature torsion spring hinge comprising: the device comprises a fixed frame 100 and a rotating arm 200, wherein the rotating arm 200 is rotatably connected with the fixed frame 100 through a rotating shaft group 300, and a torsion spring 400 is arranged at the rotating shaft group 300; the rotation shaft set 300 includes: the limit shaft sleeve 310 and the output rivet 320 which are sleeved with each other can rotate relatively; the first end of the limiting shaft sleeve 310 is provided with a straight tooth a311, and the first end of the limiting shaft sleeve 310 is installed in the rotating shaft hole a of the fixed frame 100 in an interference fit manner; the first end of the output rivet 320 is provided with a straight tooth b321, the first end of the output rivet 320 is installed in the rotating shaft hole b of the rotating arm 200 in an interference fit mode, and the limiting shaft sleeve 310 is spliced with the second end of the output rivet 320.

The limiting shaft sleeve 310 is provided with a straight tooth a311, the straight tooth a311 is in interference fit with the rotating shaft hole a of the fixed frame 100, a complete constraint state is realized, the limiting shaft sleeve 310 plays a guiding and supporting role when the output rivet 320 and the torsion spring 400 are in a moving and static state, the rigidity of the whole hinge is improved, torsion and inclination phenomena generated by the rotation and force application of the torsion spring 400 in the moving and static state are eliminated, and the stability of the hinge in the moving and static state is improved.

The output rivet 320 is provided with embossed straight teeth b321, the straight teeth b321 are in interference fit with the rotating shaft hole b of the rotating arm 200, a complete constraint state is realized, the output rivet is used as a rotating output part, the rotation freedom degree of the limiting shaft sleeve 310 is reserved, and the stability of the rotating arm 200 in dynamic output is improved.

In one embodiment, the stationary gantry 100 includes: the first support plate 110 and the second support plate 120 are distributed in an L shape, and the first support plate 110 and the second support plate 120 are integrally formed by high-hardness metal.

The first support plate 110 is provided with the rotation shaft hole a, the rotation arm 200 is symmetrical to the first support plate 110 in position, and the second support plate 120 is positioned between the first support plate 110 and the rotation arm 200.

When the movable part is used, the fixed frame 100 is arranged on the fixed part, the rotary arm 200 is arranged on the movable part, and the movable part is driven to open and close relative to the fixed part by the rotation of the rotary arm 200.

The swivel arm 200 is also formed by pressing a high-hardness metal.

In one embodiment, the rotating arm 200 is provided with a limiting portion 210, and the limiting portion 210 protrudes perpendicular to the direction of the rotating arm 200 relative to the first support plate 110; the limiting part 210 collides with the second support plate 120 when the rotating arm 200 rotates to a maximum angle with respect to the fixed frame 100.

When the small torsion spring type hinge is in an open state, the limiting part 210 of the rotating arm 200 rotates along the rotating shaft assembly 300, the limiting part 210 is in contact locking with the force application end 420 of the torsion spring 400 to apply force along the opening direction, the torsion force and the load of the torsion spring 400 are mutually offset, and the function of supporting the load by the torsion spring 400 is realized. As shown in fig. 1, in the opened and closed state of the hinge, the fixed end 410 of the torsion spring 400 is mounted in cooperation with the small hole of the fixed frame 100, so as to realize the positioning function of the torsion spring 400 during operation.

Specifically, as shown in fig. 6, in the hinge-opened state, the limiting part 210 contacts and limits the upper surface of the fixed frame 100, thereby achieving the maximum opening angle locking of the rotating arm 200.

In one embodiment, the second support plate 120 is provided with a pressing position a121, the inclined convex surface 1211 of the pressing position a121 corresponds to the limiting portion 210, the pressing position a121 can increase the rigidity of the fixed frame 100, and the pressing position a121 is only required to be integrally pressed and formed when the fixed frame 100 is manufactured, so that the process is simple and the processing is convenient.

In one embodiment, a small hole is formed at the first support plate 110, the torsion spring 400 is sleeved outside the limiting sleeve 310, one end of the torsion spring 400 is limited at the small hole, the other end of the torsion spring 400 is limited with the limiting portion 210, and the deformation of the torsion spring 400 is tightly attached to the limiting portion 210 when the rotation arm 200 is opened.

In one embodiment, the top of the second support plate 120 extends away from the first support plate 110, and the top of the second support plate 120 is provided with a profiling position b122.

In one embodiment, the rotary arm 200 is further provided with a pin hole 220, and the pin 500 horizontally passes through the pin hole 220 and abuts against the second support plate 120 to limit the rotary arm 200. In the hinge mounting and dismounting state, the positioning pin 500 passes through the pin hole 220 of the rotating arm 200 to be in contact with and limited by the mounting surface of the fixed frame 100, and the rotating arm 200 is locked under the cooperation of the positioning pin 500 and the limiting part 210, so that the mounting and dismounting are convenient.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. Small torsion spring type hinge, its characterized in that: comprising the following steps: the device comprises a fixed frame (100) and a rotating arm (200), wherein the rotating arm (200) is rotatably connected with the fixed frame (100) through a rotating shaft group (300), and a torsion spring (400) is arranged at the rotating shaft group (300); the rotation shaft group (300) includes: the limiting shaft sleeve (310) and the output rivet (320) are sleeved with each other, and the limiting shaft sleeve (310) and the output rivet (320) can rotate relatively; the first end of the limiting shaft sleeve (310) is provided with a straight tooth a (311), and the first end of the limiting shaft sleeve (310) is installed in the rotating shaft hole a of the fixed frame (100) in an interference fit manner; the first end of the output rivet (320) is provided with a straight tooth b (321), the first end of the output rivet (320) is installed in the rotating shaft hole b of the rotating arm (200) in an interference fit mode, and the limiting shaft sleeve (310) is spliced with the second end of the output rivet (320).

2. The miniature torsion spring hinge of claim 1, wherein: the stationary gantry (100) comprises: the rotary arm (200) is symmetrical to the first support plate (110), and the second support plate (120) is located between the first support plate (110) and the rotary arm (200).

3. The miniature torsion spring hinge of claim 2, wherein: the rotating arm (200) is provided with a limiting part (210), and the limiting part (210) protrudes in the direction perpendicular to the first supporting plate (110) of the rotating arm (200); the limiting part (210) is abutted against the second supporting plate (120) when the rotating arm (200) rotates to the maximum angle relative to the fixed frame (100).

4. A compact torsion spring hinge according to claim 3, wherein: the second supporting plate (120) is provided with a profiling position a (121), and an inclined convex surface (1211) of the profiling position a (121) corresponds to the limiting part (210).

5. A compact torsion spring hinge according to claim 3, wherein: the first support plate (110) is provided with a small hole, the torsion spring (400) is sleeved outside the limiting shaft sleeve (310), one end of the torsion spring (400) is limited in the small hole, the other end of the torsion spring (400) is limited with the limiting part (210), and when the rotating arm (200) is opened, the deformation of the torsion spring (400) is tightly attached to the limiting part (210).

6. The miniature torsion spring hinge of claim 2, wherein: the top of the second supporting plate (120) extends towards the direction far away from the first supporting plate (110), and a profiling position b (122) is arranged at the top of the second supporting plate (120).

7. A miniature torsion spring hinge according to any one of claims 1 to 6, wherein: also includes a locating pin (500).

8. The miniature torsion spring hinge of claim 7, wherein: the rotating arm (200) is provided with a pin hole (220), and the locating pin (500) horizontally penetrates through the pin hole (220) and is in contact with the second supporting plate (120) to limit the rotating arm (200).