Limiting hinge mechanism

Abstract

The utility model discloses a limiting hinge mechanism, which comprises a first hinge part, a second hinge part and a limiting shaft assembly, the first hinge part and the second hinge part are coaxially arranged, the limiting shaft assembly comprises a clamping end, a shaft rod and an elastic limiting sleeve, the clamping end is arranged in the first hinge part, and the clamping end and the first hinge part are connected in a clamping way; a containing opening is formed in the end face of the second hinge part, a plurality of clamping grooves are evenly distributed in the inner wall of the containing opening in the circumferential direction, the limiting sleeve is arranged in the containing opening, at least one protruding part protruding outwards is formed on the edge of the limiting sleeve, the protruding parts are clamped in the clamping grooves, and the end of the clamping end and the end of the limiting sleeve are aligned and connected in a clamped mode. The shaft rod sequentially penetrates through the clamping end, the limiting sleeve and the second hinge part. The limiting hinge mechanism of the structure is compact in structure, higher in hinge positioning performance and more reliable in overall structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to a device can overturn especially a kind of limiting hinge mechanism. BACKGROUND

[0002] In prior art, for example, portable fan, its fan body and support arm are generally hinged in a way, this hinge mode can conveniently adjust the orientation of fan body for user, in order to position the orientation of fan body, generally set damping mechanism between fan body and support arm, common damping mechanism is generally realized by friction, i.e. by tightening nut to adjust the friction between two hinge parts, this damping mode has the defects of poor positioning effect and low service life. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide a limiting hinge mechanism with compact structure and stronger hinge positioning performance in view of the deficiencies of prior art.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme.

[0005] A limiting hinge mechanism, it includes first hinge part, second hinge part and limiting shaft assembly, the first hinge part and the second hinge part coaxial center are established, the limiting shaft assembly includes clamping end head, shaft and the limiting sleeve with elasticity, the clamping end head is located in the first hinge part and is clamped together, the end face of the second hinge part is equipped with accommodating mouth, the inner wall of the accommodating mouth is evenly distributed with a plurality of clamping grooves along the circumference, the limiting sleeve is located in the accommodating mouth, the edge of the limiting sleeve is formed with at least one outwardly protruding protruding portion, the protruding portion is clamped in the clamping groove, the end of the clamping end head is aligned with the end of the limiting sleeve and is clamped together, the shaft passes the clamping end head, the limiting sleeve and the second hinge part in turn, when the first hinge part is overturned relative to the second hinge part, the torsion is conducted to the limiting sleeve by the clamping end head, the limiting sleeve is elastically deformed to make the protruding portion slide along a plurality of clamping grooves in turn, when the first hinge part is completed overturning, based on the clamping relationship of the protruding portion and the clamping groove, the first hinge part is limited in the angle position after overturning.

[0006] Preferably, it includes two first hinge parts, and the second hinge part is arranged between the two first hinge parts.

[0007] Preferably, the limiting shaft assembly includes two clamping end heads and two limiting sleeves, the two clamping end heads are arranged in the two first hinge parts respectively, and the two limiting sleeves are arranged in the accommodating mouths at two ends of the second hinge part.

[0008] Preferably, an end face of the first hinged part opposite to the second hinged part is formed with a polygonal hole, the clamping end head is a polygonal end head, and the clamping end head is arranged in the polygonal hole and is clamped and connected with the polygonal hole.

[0009] Preferably, an end of the clamping end head is formed with two clamping claws, and an end of the limiting sleeve is formed with a slot, and the two clamping claws are inserted into the slot.

[0010] Preferably, one end of the shaft rod is provided with a rod cap, the other end of the shaft rod is screwed with a nut, one end of the clamping end head opposite to the limiting sleeve is formed with an end face notch, the rod cap and the nut are arranged in the end face notches of the two clamping end heads, and the nut is clamped and connected with the inner wall of the end face notch.

[0011] Preferably, the edge of the limiting sleeve is formed with two symmetrically arranged protruding parts.

[0012] Preferably, the opening of the polygonal hole is covered with an end cover, and the end cover is clamped and matched with the polygonal hole.

[0013] Preferably, the bottom of the polygonal hole is provided with an avoiding slot hole through which the clamping claw passes.

[0014] Preferably, the limiting sleeve is in a circular ring shape, the inner side of the limiting sleeve is provided with two mutually parallel clamping parts, and the slot is formed between the two clamping parts.

[0015] When the first hinged part is flipped relative to the second hinged part, based on the clamped and connected relationship between the clamping end head and the first hinged part, the clamping end head conducts a torsion force to the limiting sleeve, under the action of the torsion force, the limiting sleeve is elastically deformed, with the flipping of the first hinged part, the protruding part slides along the plurality of clamping grooves in sequence, when the first hinged part is flipped, the protruding part is naturally clamped into the corresponding clamping groove under the elastic action, so that the first hinged part is limited at the angle position after flipping. The limiting hinged mechanism with the above structure not only has a compact structure, but also has stronger hinged positioning performance, and the overall structure is more reliable. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural view of the first hinged part;

[0017] Figure 2 It is an exploded view of the second hinged part and the limiting shaft assembly;

[0018] Figure 3 It is a structural view of the limiting sleeve;

[0019] Figure 4 It is a sectional view of the limiting hinged mechanismFigure 1 ;

[0020] Figure 5 Cross section of limiting hinging mechanism Figure 2 . DETAILED DESCRIPTION

[0021] The utility model will be described in more detail below in combination with the drawings and examples.

[0022] The utility model discloses a kind of limiting hinging mechanisms, in combination Figures 1 to 5 As shown in the figure, it includes first hinging part 30, second hinging part 20 and limiting shaft assembly 4, the first hinging part 30 and the second hinging part 20 coaxial center are arranged, the limiting shaft assembly 4 includes clamping end head 40, shaft stem 41 and the limiting sleeve 42 with elasticity, the clamping end head 40 is located in the first hinging part 30 and is clamped and connected, the end surface of the second hinging part 20 is equipped with accommodating port 200, the inner wall of the accommodating port 200 is evenly distributed with a plurality of clamping grooves 201 along the circumference, the limiting sleeve 42 is located in the accommodating port 200, the edge of the limiting sleeve 42 is formed with at least one outwardly protruding protruding portion 420, the protruding portion 420 is clamped in the clamping groove 201, the end of the clamping end head 40 is aligned with the end of the limiting sleeve 42 and is clamped and connected, the shaft stem 41 passes through the clamping end head 40, the limiting sleeve 42 and the second hinging part 20 in turn, when the first hinging part 30 overturns relative to the second hinging part 20, the clamping end head 40 conducts torsion to the limiting sleeve 42, the limiting sleeve 42 elastically deforms to make the protruding portion 420 slide along a plurality of clamping grooves 201 in turn, when the first hinging part 30 completes overturning, based on the clamping relationship of the protruding portion 420 and the clamping groove 201, the first hinging part 30 is limited at the angle position after overturning.

[0023] In the above structure, when the first hinging part 30 overturns relative to the second hinging part 20, based on the clamping connection relationship between the clamping end head 40 and the first hinging part 30, the clamping end head 40 conducts torsion to the limiting sleeve 42, under the action of the torsion, drives the limiting sleeve 42 to elastically deform, with the overturning of the first hinging part 30, makes the protruding portion 420 slide along a plurality of clamping grooves 201 in turn, when the first hinging part 30 completes overturning, the protruding portion 420 is naturally clamped into corresponding clamping groove 201 under the action of elasticity, so as to limit the first hinging part 30 at the angle position after overturning. The limiting hinging mechanism of the above structure not only has compact structure, but also has stronger hinging positioning performance, and the overall structure is more reliable.

[0024] In order to make the hinged relationship more stable and reliable, the embodiment includes two first hinged parts 30, and the second hinged part 20 is arranged between the two first hinged parts 30.

[0025] Corresponding to the above structure, in the embodiment, the limiting shaft assembly 4 includes two clamping end heads 40 and two limiting sleeves 42, the two clamping end heads 40 are arranged in the two first hinged parts 30, and the two limiting sleeves 42 are arranged in the accommodating openings 200 at both ends of the second hinged part 20.

[0026] As a preferred mode, the end face of the first hinged part 30 away from the second hinged part 20 is formed with a polygonal hole 300, the clamping end head 40 is a polygonal end head, and the clamping end head 40 is arranged in the polygonal hole 300 and is clamped and connected. Among them, the embodiment preferably adopts the cooperation of the polygonal end head and the polygonal hole, so that the clamping end head 40 and the first hinged part 30 maintain a reliable clamping relationship, thereby avoiding slipping and other situations during the turnover process.

[0027] Regarding the preferred transmission relationship between the clamping end head 40 and the limiting sleeve 42, in the embodiment, the end of the clamping end head 40 is formed with two clamping claws 400, the end of the limiting sleeve 42 is formed with a slot 421, and the two clamping claws 400 are inserted into the slot 421.

[0028] Further, one end of the shaft rod 41 is provided with a rod cap 410, the other end of the shaft rod 41 is screwed with a nut 411, the end of the clamping end head 40 away from the limiting sleeve 42 is formed with an end face recess 401, the rod cap 410 and the nut 411 are arranged in the end face recess 401 of the two clamping end heads 40, and the nut 411 is clamped and connected with the inner wall of the end face recess 401.

[0029] In the above structure, based on the fastening cooperation relationship between the nut 411 and the shaft rod 41, the first hinged part 30, the second hinged part 20 and the limiting shaft assembly 4 can be tightly and reliably assembled.

[0030] In order to balance the clamping force on both sides of the limiting sleeve 42, in the embodiment, the edge of the limiting sleeve 42 is formed with two symmetrically arranged protruding parts 420.

[0031] As a preferred mode, the opening of the polygonal hole 300 is covered with an end cover 44, and the end cover 44 is clamped and matched with the polygonal hole 300. Among them, the end cover 44 has a covering effect on the polygonal hole 300, not only dustproof and stainproof, but also better in appearance.

[0032] Further, the bottom of the polygonal hole 300 is provided with an avoidance slot hole 301 for the clamping claw 400 to pass through.

[0033] As a preferred mode, the limiting sleeve 42 is annular, and the inner side of the limiting sleeve 42 is provided with two clamping portions 422 which are parallel to each other, and the insertion slot 421 is formed between the two clamping portions 422.

[0034] In the above structure, the limiting sleeve 42 which is annular has good elasticity and toughness, so that in the process of the first hinge portion 30 being turned over, the limiting sleeve 42 can slightly deform, so that the protruding portion 420 can overcome the resistance of the clamping groove 201 and sequentially slide along the plurality of clamping grooves 201, and in addition, after the first hinge portion 30 is turned over, based on the elasticity of the limiting sleeve 42 itself, the protruding portion 420 can be reliably clamped in the clamping groove 201, so as to achieve the purpose of positioning after turning over.

[0035] The above is only the preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement or improvement within the technical scope of the present application shall be included in the scope of protection of the present application.

Claims

1. A check linkage mechanism, characterized by, The application relates to a hinge assembly, which comprises a first hinge part, a second hinge part and a limiting shaft assembly, the first hinge part and the second hinge part are coaxially arranged, the limiting shaft assembly comprises a clamping end, a shaft rod and an elastic limiting sleeve, the clamping end is arranged in the first hinge part and is clamped and connected with the first hinge part, the end face of the second hinge part is provided with a containing opening, the inner wall of the containing opening is uniformly provided with a plurality of clamping grooves in the circumferential direction, the limiting sleeve is arranged in the containing opening, the edge of the limiting sleeve is formed with at least one outward protruding protruding part, the protruding part is clamped in the clamping groove, the end of the clamping end is aligned with the end of the limiting sleeve and is clamped and connected with the limiting sleeve, the shaft rod passes through the clamping end, the limiting sleeve and the second hinge part in sequence, when the first hinge part is turned relative to the second hinge part, the clamping end conducts torsion to the limiting sleeve, the limiting sleeve is elastically deformed to enable the protruding part to slide along the clamping grooves in sequence, and when the first hinge part is turned, the first hinge part is limited at the angle position after turning based on the clamping relationship between the protruding part and the clamping groove.

2. The check linkage of claim 1, wherein, The second hinge part is arranged between the two first hinge parts.

3. The check linkage of claim 2, wherein, The limiting shaft assembly comprises two clamping ends and two limiting sleeves, the two clamping ends are arranged in the two first hinge parts, and the two limiting sleeves are arranged in the containing openings at the two ends of the second hinge part.

4. The check linkage of claim 1, wherein, The end face of the first hinge part away from the second hinge part is formed with a polygonal hole, the clamping end is a polygonal end, and the clamping end is arranged in the polygonal hole and is clamped and connected with the polygonal hole.

5. The check linkage of claim 4, wherein, The end of the clamping end is formed with two clamping claws, the end of the limiting sleeve is formed with a slot, and the two clamping claws are inserted into the slot.

6. The check linkage of claim 3, wherein, One end of the shaft rod is provided with a rod cap, the other end of the shaft rod is screwed with a nut, the end of the clamping end away from the limiting sleeve is formed with an end face recess, the rod cap and the nut are arranged in the end face recesses of the two clamping ends, and the nut is clamped and connected with the inner wall of the end face recess.

7. The check linkage of claim 1, wherein, The edge of the limiting sleeve is formed with two symmetrically arranged protruding parts.

8. The check linkage of claim 4, wherein, The opening of the polygonal hole is covered with an end cover, and the end cover is clamped and matched with the polygonal hole.

9. The check linkage of claim 5, wherein, The bottom of the polygonal hole is provided with an avoiding slot hole for the clamping claw to pass through.

10. The check linkage of claim 5, wherein, The limiting sleeve is in a circular ring shape, the inner side of the limiting sleeve is provided with two mutually parallel clamping parts, and the slot is formed between the two clamping parts.

Images