CN221220136U - Buffer hinge - Google Patents

Abstract

A buffer hinge, its inner hinge slice has a pair of traction portions, the base of traction portion has supporting lugs; the spring piece is a double-torsion spring, the upper fixing pin penetrates through the upper reaming hole of the hinge arm, the rear reaming hole of the outer hinge piece and the torsion spring hole, the lower fixing pin penetrates through the lower reaming hole of the hinge arm and the rear reaming hole of the inner hinge piece, and the middle torsion arm of the double-torsion spring is correspondingly abutted with the inner cavity of the hinge arm, and the torsion arms on the two sides are correspondingly abutted with the two supporting convex blocks and apply elastic thrust; when the inner hinge piece rotates along the lower fixing pin to enable the traction part to move relative to the top wall of the hinge arm, the traction part acts on the stress part of the buffer assembly to buffer the buffer assembly and enable the double torsion spring to be elastically unfolded. The hinge forms a stable elastic supporting structure through the double-torsion spring, the inner hinge piece and the hinge arm, and can further improve the combination stability, the structural compactness and the installation convenience of the hinge based on an optimized space provided by the structure.

Description

Buffer hinge

Technical Field

The utility model relates to the field of damping buffer connectors, in particular to a buffer hinge.

Background

Hinges are often used as connectors for the opening and closing structure, which enable the opening and closing of the opening and closing structure around the shaft. In order to achieve the buffering effect of the opening and closing process of the opening and closing structure, the buffer assembly is additionally arranged in the hinge, so that the buffer assembly is an effective setting scheme.

At present, a buffer component of a hinge provides a buffer effect for closing the hinge by providing a single buffer stress direction, and provides a supporting force for the unfolding process of the hinge by matching with a single torsion spring arranged on the hinge. The applicant finds that in the long-term opening and closing process of the hinge, the spring coils and the torsion arms of the single torsion spring can form lateral offset to press corresponding contact parts due to the torsion of the single torsion spring, so that the pressed corresponding parts are subjected to lateral pressure biased to one side, and after the hinge is used for a long time, abnormal friction feeling can be generated in the opening and closing process of the hinge due to the influence of the lateral pressure on the swinging parts, and particularly in the buffer hinge of the type in which the single torsion spring directly applies pressing contact to the buffer assembly, the situation is more obvious; in order to reduce the influence of the situation, the conventional arrangement scheme is to separate the buffer component and the single torsion spring from each other, or to additionally arrange the buffer component on the hinge arm, but the above scheme can reduce the structural compactness of the hinge and can prolong the arm of force of the hinge arm.

Disclosure of Invention

The invention aims to provide a buffer hinge, which can apply symmetrical elastic thrust to a butt part by adopting an elastic structure formed by a double-torsion spring, an inner hinge piece and a hinge arm, so as to form a stable elastic supporting structure, and can further improve the structures of parts such as a hinge buffer assembly, the double-torsion spring, the hinge arm and the like so as to improve the combination stability, the structural compactness and the installation convenience of the hinge.

In order to achieve the above purpose, the utility model is implemented by adopting the following technical means:

The buffer hinge comprises an inner hinge piece, an outer hinge piece and a buffer component, wherein the front end and the rear end of the inner hinge piece and the outer hinge piece are respectively connected with a hinge cup and a hinge arm, and are guided by the inner hinge piece and the outer hinge piece to be mutually opened and closed; the spring piece is a double-torsion spring, the upper fixing pin penetrates through the upper reaming hole of the hinge arm, the rear reaming hole of the outer hinge piece and the torsion spring hole, and the lower fixing pin penetrates through the lower reaming hole of the hinge arm and the rear reaming hole of the inner hinge piece; the middle torsion arm of the double torsion spring is correspondingly abutted against the inner cavity of the hinge arm, and the torsion arms at the two sides are correspondingly abutted against the two supporting convex blocks and apply elastic thrust; when the inner hinge piece rotates along the lower fixing pin to enable the traction part to move relative to the top wall of the hinge arm, the traction part acts on the stress part of the buffer assembly to buffer the buffer assembly and enable the double torsion spring to be elastically unfolded.

Further, the middle part of the front end of the inner cavity of the hinge arm is provided with a concave position, and the middle torsion arm is matched with the concave position.

Further, the outer sides of the side torsion arms are attached to the side walls of the inner cavities of the hinge arms.

Further, an outer notch is arranged on the outer side of the supporting lug, the inner side of the side torsion arm is abutted against the outer edge of the supporting lug, or the bottom wall of the side torsion arm is abutted against the bottom wall of the outer notch.

Further, the buffer assembly comprises a mounting frame with a stress part, a damper and a mounting sleeve, wherein the cylinder body side of the damper is inserted into a jack of the mounting sleeve, the mounting sleeve is fixedly mounted in an inner cavity of the hinge arm, a driving rod of the damper is exposed out of the jack of the mounting sleeve and is abutted to the inner wall surface of a transverse frame piece of the mounting frame, and the mounting frame is abutted to the driving rod to shrink for the cylinder body so as to buffer.

Further, the mounting sleeve is fixedly mounted in the inner cavity of the hinge arm in a non-sliding manner.

Further, the lower fixing pin is abutted against the lower end of the mounting sleeve, so that the mounting sleeve is fixedly mounted with the hinge arm through the clamping part.

Further, the front end of the mounting sleeve is provided with a pair of pressing edges, the lower cambered surfaces of the two pressing edges are correspondingly abutted against the two spring coils of the double-torsion spring, the upper planes of the two pressing edges are both abutted against the top wall of the hinge arm, and the separation notch between the two pressing edges is larger than the width of the middle torsion arm.

Further, the traction part is one of a hook shape, a column shape, a sheet shape and a hole shape, and the stress part is one of a hook shape, a column shape, a sheet shape and a hole shape which can be matched with the traction part.

Further, the traction part is a traction hook which is upturned from the base part and the tail end of the traction part is a cambered surface, and the stress part is a sliding inclined sheet which is outwards turned from two sides of the mounting frame to form an outer convex part which is arranged at the lower edge of the sliding chute; when the inner hinge piece rotates along the lower fixing pin to enable the traction part to move relative to the top wall direction of the hinge arm, the cambered surface of the traction hook slides relative to the inclined surface of the sliding inclined piece and pulls the mounting frame, so that the mounting frame is propped against the driving rod to shrink relative to the cylinder body to generate buffering.

The utility model has at least the following advantages:

1. According to the utility model, the double torsion springs are arranged, so that symmetrical elastic thrust is applied to the abutting parts of the middle torsion arm and the two side torsion arms, a stable elastic supporting structure is formed, the spring coils of the double torsion springs do not generate larger lateral deflection under the action of elasticity, and compared with the arrangement scheme of a single torsion spring, the single lateral deflection amplitude of the spring coils can be reduced, so that abnormal friction feeling generated in the opening and closing process of the hinge due to the action of elastic pressure of the torsion spring-buffer assembly is reduced, and the compactness of the hinge structure is improved;

2. Based on the structure of the double-torsion spring and the inner hinge piece supporting lug, the reasonable structure arrangement of the inner hinge piece, the hinge arm and the buffer component is matched, and each part of the side torsion arm, the spring coil and the middle torsion arm can be further limited in structure, so that the combination stability and the installation convenience of the double-torsion spring in the hinge are improved;

3. The structure of the double-torsion spring-inner hinge piece supporting lug can be adapted to buffer components of various different types, and the technology also provides a preferable buffer component structure scheme, such as the mode that the installation sleeve and the hinge arm are fixedly installed to improve the combined stability, the cambered surface traction hook slides relative to the stress part of the sliding inclined piece to traction the installation frame so as to improve the structural strength of the component and the smoothness of the buffering process.

Drawings

FIG. 1 is a schematic illustration of an exploded view of the present utility model;

FIG. 2 is an expanded schematic view of the combined state of the present utility model;

FIG. 3 is a schematic illustration of the combination of the present utility model;

FIG. 4 is a schematic view of the mounting of the torsion spring and the inner hinge plate;

FIG. 5 is a schematic view of the mounting of the torsion spring and the inner hinge plate without the outer notch;

FIG. 6 is a schematic view of an optimization scheme based on FIG. 5 with the addition of an arcuate pad surface;

FIG. 7 is a schematic view of an inner hinge plate with an outer notch of another support tab;

fig. 8 is a schematic view of the mount.

Description of the embodiments

The following describes the embodiments of the present utility model further with reference to the drawings. The description of these embodiments is provided to assist understanding of the present utility model, but is not intended to limit the present utility model. In addition, technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

In the description of the present utility model, the terms "front", "rear", "left" and "right", etc. refer to the orientation or positional relationship based on that shown in the drawings, for convenience of description of the present utility model only and are not required to necessarily construct and operate in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1-7, in this embodiment, an optimized design of the buffering hinge and its components is provided, the hinge is provided with an inner hinge plate front hinge hole 215 and an outer hinge plate front hinge hole 225 which are connected with the hinge cup 11 through the U-shaped nail 13, the inner hinge plate rear hinge hole 214 and the outer hinge plate rear hinge hole 224 are respectively connected with the hinge arm 12 through the lower fixing pin 42 and the upper fixing pin 41, so that the hinge cup 11 and the hinge arm 12 are guided by the inner hinge plate 21 and the outer hinge plate 22 to open and close, and a buffering component and a spring element are further installed on the hinge arm 12, specifically:

The rear end of the inner hinge piece 21 is provided with a pair of traction hooks 212 which are upturned from the base part and the tail ends of which are cambered surfaces, and the base part of the traction hooks 212 is provided with supporting lugs 211; the spring piece is a double torsion spring 3, an upper fixing pin 41 penetrates through an upper hinge hole 121 of the hinge arm, a rear hinge hole of the outer hinge piece 22 and a torsion spring hole 34, a lower fixing pin 42 penetrates through a lower hinge hole 122 of the hinge arm and a rear hinge hole 214 of the inner hinge piece, a middle torsion arm 31 of the double torsion spring 3 is correspondingly abutted with an inner cavity of the hinge arm 12, and torsion arms 32 on two sides are correspondingly abutted with two supporting convex blocks 211 and apply elastic thrust; during the change of the hinge from the closed state to the open state, the inner hinge piece 21 rotates along the lower fixing pin 42 to move the towing hook 212 relative to the top wall direction of the hinge arm 12, and at this time, the towing hook 212 acts on the stress part of the buffer assembly, so that the buffer assembly buffers and the torsion spring 3 is elastically opened. With this arrangement, the torsion spring 3 applies the same elastic pushing force to the two support projections 211 by the torsion arms 32 on both sides, so that the left and right sides of the lower fixing pin 42 can receive the same pressure during the opening and closing process, and the coils 33 of the torsion spring 3 do not laterally deviate by a large margin. The influence of the lateral elastic force of the single torsion spring on the contact part can be avoided when the hinge is used for a long time, for example, the lateral force generated when the two torsion spring arms press the outer hinge piece 22 and the hinge arm 12 is reduced to reduce the rotation friction between the upper fixing pin 41 and the outer hinge piece 22, or the deflection pressing of the spring coil 33 to the buffer component caused by the lateral deflection is reduced to cause the deflection retraction of the driving rod 422 relative to the cylinder 421.

Meanwhile, the middle torsion arm 31 of the double torsion spring 3 directly applies elastic acting force to the middle part of the inner cavity of the hinge arm 12, and in order to improve convenience in the installation process, a concave position 123 is preferably arranged at the middle part of the front end of the inner cavity of the hinge arm 12, so that the middle torsion arm 31 is matched with the concave position 123, and the phenomenon that the middle torsion arm 31 slides along the inner cavity of the hinge arm 12 in a plane in the installation process is avoided; in addition, set up side torsion arm 32 outside laminating arm hinge 12 inner chamber lateral wall, in the installation in-process side torsion arm 32 can aim at the exact fit installation to the arm hinge 12 inner chamber in, can improve the installation convenience equally to the both sides torsion arm 32 can be in the form of adherence pivoted motion in the elastic deformation in-process of pair torsion spring 3, further reduced the possibility that side torsion spring takes place the lateral deviation.

It is possible to use only the supporting projection 211 protruding from the base of the towing hook 212 as shown in fig. 5, and the side torsion arm 32' of the supporting projection 211 and the side torsion arm 32' can be attached in a surface contact manner in cooperation with the double torsion spring 3' formed by twisting square spring steel, and the possibility of sideslip dislocation of the surface of the side torsion arm relative to the supporting projection 211 can be avoided in a line contact manner relative to the double torsion spring 3 formed by twisting round spring steel; in addition, on the basis of the scheme of the supporting bump 211 shown in fig. 5, two arc-shaped pad surfaces 211 'extending inwards and coplanar with the arc-shaped surfaces of the supporting bump 211 are added, and the area of the supporting bump 211 is enlarged to form a structure as shown in fig. 6, so that the possibility that the torsion arms 32' on two sides sideslips inwards in opposite directions relative to the supporting bump 211 is reduced.

In addition, as another technical solution, by means of structural modification on the outer side of the supporting projection 211, the effect of reducing the contact friction force can be obtained based on the torsion spring 3 formed by twisting the round spring steel while reducing the possibility of the torsion arms 32 on both sides sliding off the supporting projection 211 during the installation process. Specifically, two optimization schemes can be adopted for the structure of the supporting bump 211, one of which is as shown in fig. 1-4, wherein an outer notch 213 penetrating through the supporting bump 211 is arranged at the outer side of the supporting bump 211, and the side torsion arm 32 is abutted against the outer edge of the supporting bump 211 in cooperation with the double torsion spring 3 with a longer length side torsion arm 32, and the outer side of the side torsion arm 32 is abutted against the inner cavity side wall of the hinge arm 12, so that the lower side of the double torsion spring 3 is limited by the inner hinge piece 21 and the inner cavity side wall of the hinge arm 12; as shown in fig. 7, an outer notch 231' which does not completely penetrate the supporting bump 211 is also provided on the outer side of the supporting bump 211, and the side torsion arm 32 is matched with the double torsion spring 3 with a shorter length side torsion arm 32, and the bottom wall of the side torsion arm 32 is abutted against the bottom wall of the outer notch, and the outer side of the side torsion arm 32 can be selectively abutted against or not abutted against the side wall of the inner cavity of the hinge arm 12.

The structure of the torsion spring 3-hinge arm 12-inner hinge piece 21 can be applied to various types of opposite buffer hinges, including two types of products with a slidable or non-slidable buffer component, in this embodiment, a buffer hinge with a non-slidable buffer component is provided, specifically, the buffer component includes a mounting frame 43 with a stress portion, a damper, and a mounting sleeve 41, a cylinder 421 side of the damper is inserted into a jack 411 of the mounting sleeve 41, the mounting sleeve 41 is fixedly mounted in an inner cavity of the hinge arm 12, a driving rod 422 of the damper is exposed out of the jack 411 of the mounting sleeve 41 and abuts against an inner wall surface of a transverse frame piece of the mounting frame 43, and the mounting frame 43 abuts against the driving rod 422 to shrink relative to the cylinder 421 so as to generate buffering. With this structure, the damper assembly is fixed in a non-sliding state except for the driving rod 422 which is compressed and rebounded by the mounting frame 43. Based on the structure, the mounting sleeve 41 can be locked on the hinge arm 12, so that the stability of the main stress part of the buffer component on the hinge is improved, the damage to the mounting sleeve 41 and the damper caused by pressure transmission in the hinge folding process in the hinge opening and closing process is reduced, and the whole structure is more intensified.

In order to further improve the structural strength of the mounting frame 43, it is preferable to provide the traction hook 212 as a traction hook 212 with an upward tilted base and a cambered end, and to provide the stress part as a sliding inclined piece 431 which is folded outwards from two sides of the mounting frame 43 to form a convex part protruding from the lower edge of the chute; when the inner hinge piece 21 rotates along the lower fixing pin 42 to enable the traction hook 212 to move relative to the top wall direction of the hinge arm 12, the cambered surface of the traction hook 212 slides relative to the inclined surface of the sliding inclined piece 431 and pulls the mounting frame 43, so that the mounting frame 43 props against the driving rod 422 to shrink relative to the cylinder 421 to generate buffering, compared with the structure adopting a columnar traction part-hook-shaped stress part in the prior arrangement, the friction between the traction part and the stress part can be reduced in a manner of rolling sliding instead of rotating friction by adopting a matching manner of the cambered surface traction hook 212-the sliding inclined piece 431 stress part, and the service life of the buffering component is prolonged.

Compared with the prior art that only the lower fixing pin 42 is used to insert the fixing hole 124 at the lower end of the mounting sleeve 41, further, in the embodiment, the lower fixing pin 42 is arranged to be abutted against the lower end of the mounting sleeve 41, so that the mounting sleeve 41 is fixedly mounted with the hinge arm 12 through the clamping part, the upper end of the mounting sleeve 41 is matched with the fixing hole 124 provided with the fixing column 412 and the upper wall of the inner cavity of the hinge arm 12 to be mounted and fixed, the overall stability of the buffer assembly and the structural degree of the hinge can be improved, the acting force of the mounting sleeve 41 in the process of buffering and opening and closing the hinge can be applied in the hinge opening and closing process, the pressure can be released to the fixing hole 124 through the thicker and stronger fixing column 412, the structural damage of the fixing hole 124 at the lower end of the mounting sleeve 41 is avoided, and the service life of the buffer assembly can be further prolonged.

In order to further improve the overall stability of the buffer assembly and the convenience of the hinge assembly process, a pair of pressing edges 413 are arranged at the front end of the mounting sleeve 41, the lower cambered surfaces of the two pressing edges 413 are correspondingly abutted against the two coils 33 of the double torsion spring 3, the upper planes of the two pressing edges 413 are both abutted against the top wall of the hinge arm 12, and the separation notch 43 between the two pressing edges 413 is larger than the width of the middle torsion arm 31. Based on the structural arrangement scheme of the double-torsion spring 3, the left side and the right side of the lower fixing pin 42 can receive the same pressure in the opening and closing process, and the spring coils 33 of the double-torsion spring 3 do not generate larger lateral deflection, so the installation stability and the overall structural compactness of the spring coils 33 are improved in a mode that the pressing edges 413 at the front ends of the installation sleeves 41 are abutted against the two spring coils 33, and meanwhile, the separation notch 43 between the two pressing edges 413 can be used for the middle torsion arm 31 to pass through, so that the convenience of the hinge arm 12, the buffer assembly and the double-torsion spring 3 in the automatic installation process is also improved.

The drawings in the present embodiment are for illustration purposes only and are not intended to be construed as limiting the present patent; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Claims (10)

1. The utility model provides a buffering hinge, includes interior hinge piece, outer hinge piece, buffer unit, and the spring part, the front and back end of interior hinge piece and outer hinge piece respectively with hinge cup, hinge arm interconnect to open and shut each other through interior hinge piece, outer hinge piece guide, its characterized in that: the inner hinge piece is provided with a pair of traction parts, and the base part of each traction part is provided with a supporting lug; the spring piece is a double-torsion spring, the upper fixing pin penetrates through the upper reaming hole of the hinge arm, the rear reaming hole of the outer hinge piece and the torsion spring hole, and the lower fixing pin penetrates through the lower reaming hole of the hinge arm and the rear reaming hole of the inner hinge piece; the middle torsion arm of the double torsion spring is correspondingly abutted against the inner cavity of the hinge arm, and the torsion arms at the two sides are correspondingly abutted against the two supporting convex blocks and apply elastic thrust; when the inner hinge piece rotates along the lower fixing pin to enable the traction part to move relative to the top wall of the hinge arm, the traction part acts on the stress part of the buffer assembly to buffer the buffer assembly and enable the double torsion spring to be elastically unfolded.

2. The cushion hinge of claim 1, wherein: the middle part of the front end of the inner cavity of the hinge arm is provided with a concave position, and the middle torsion arm is matched with the concave position.

3. The cushion hinge of claim 1, wherein: and the outer sides of the side torsion arms are attached to the side walls of the inner cavities of the hinge arms.

4. A cushioned hinge as claimed in claim 3 wherein: the outer side of the supporting lug is provided with an outer notch position, the inner side of the side torsion arm is abutted against the outer edge of the supporting lug, or the bottom wall of the side torsion arm is abutted against the bottom wall of the outer notch position.

5. The cushion hinge of any one of claims 1-4, wherein: the buffer assembly comprises a mounting frame with a stress part, a damper and a mounting sleeve, wherein the cylinder body side of the damper is inserted into a jack of the mounting sleeve, the mounting sleeve is fixedly mounted in an inner cavity of the hinge arm, a driving rod of the damper is exposed out of the jack of the mounting sleeve and is abutted to the inner wall surface of a transverse frame piece of the mounting frame, and the mounting frame is abutted to the driving rod to shrink for generating buffer.

6. The cushion hinge of claim 5, wherein: the mounting sleeve is fixedly mounted in the inner cavity of the hinge arm in a non-sliding manner.

7. The cushion hinge of claim 6, wherein: the lower fixing pin is abutted against the lower end of the mounting sleeve, so that the mounting sleeve is fixedly mounted with the hinge arm through the clamping part.

8. The cushion hinge of claim 6, wherein: the installation cover front end is provided with a pair of pressure along, and the lower cambered surface on two pressure edges corresponds two spring coils of butt pair torsion spring, and the upper plane on two pressure edges all butt hinge arm roof, and the notch that separates between two pressure edges is greater than the width of middle part torsion arm.

9. The cushion hinge of claim 5, wherein: the traction part is one of a hook shape, a column shape, a sheet shape and a hole shape, and the stress part is one of a hook shape, a column shape, a sheet shape and a hole shape which can be matched with the traction part.

10. The cushion hinge of claim 9, wherein: the traction part is a traction hook which is upturned from the base part and the tail end of the traction part is a cambered surface, and the stress part is a sliding inclined sheet which is outwards turned from two sides of the mounting frame to form an outer convex part which is arranged at the lower edge of the sliding chute; when the inner hinge piece rotates along the lower fixing pin to enable the traction part to move relative to the top wall direction of the hinge arm, the cambered surface of the traction hook slides relative to the inclined surface of the sliding inclined piece and pulls the mounting frame, so that the mounting frame is propped against the driving rod to shrink relative to the cylinder body to generate buffering.