CN112790540A

CN112790540A - Rotation locking mechanism

Info

Publication number: CN112790540A
Application number: CN202110111047.5A
Authority: CN
Inventors: 申鹏; 邓明珠; 蒋小龙; 龙军; 王正微
Original assignee: Chongqing Yanfeng Adient Automotive Components Co Ltd
Current assignee: Chongqing Adient Automotive Components Co Ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2021-05-14

Abstract

The invention discloses a rotation locking mechanism, which comprises a first connecting piece and a second connecting piece which are connected in a rotatable manner, wherein the first connecting piece and the second connecting piece are respectively provided with a fixed piece and a movable piece, the fixed piece is provided with a locking groove, the movable piece is provided with a locking head matched with the locking groove, the fixed piece is fixedly connected with the first connecting piece, the movable piece is rotatably arranged relative to the second connecting piece and can rotate relative to the fixed piece, so that the locking head enters the locking groove to lock the first connecting piece and the second connecting piece, or exits from the locking groove to unlock the second connecting piece and the first connecting piece. By adopting the scheme, the locking between the two connecting pieces with smaller rotating radius is realized by a relatively simpler and more compact structure, the mounting space is saved, the mounting efficiency is improved, and the locking device has good reliability and stability.

Description

Rotation locking mechanism

Technical Field

The invention relates to the technical field of connecting structures, in particular to a rotation locking mechanism.

Background

Adopt the pivot to realize the pivot installation between two relative pivoted parts of needs usually, and cooperate corresponding mounting, in order to lock the position of two parts, among the prior art, the mounting setting that will mutually support is in the one side of keeping away from the pivot mostly, it is articulated through the hinge if one side of door and door frame, the opposite side then sets up corresponding keying structure, and to two parts that turning radius is shorter, adopt the similar structure that separately sets up, lateral part space has obviously been increased, it is comparatively loaded down with trivial details to install simultaneously, the installation effectiveness has been reduced.

Disclosure of Invention

In order to solve the above problems, the present invention provides a rotation locking mechanism to adapt to the connection between two components with a short rotation radius, and to reduce the occupation of the connection fixing member in the side space, and to improve the installation efficiency.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a rotation locking mechanism comprises a first connecting piece and a second connecting piece which are connected in a rotatable mode, and is characterized in that: the first connecting piece and the second connecting piece are respectively provided with a fixing piece and a moving piece, wherein the fixing piece is provided with a locking groove, the moving piece is provided with a locking head matched with the locking groove, the fixing piece is fixedly connected with the first connecting piece, the moving piece is rotatably arranged relative to the second connecting piece and can rotate relative to the fixing piece, so that the locking head enters the locking groove to lock the first connecting piece and the second connecting piece, or exits from the locking groove to unlock the second connecting piece and the first connecting piece.

Structure more than adopting, install mounting and moving part respectively on two connecting pieces that rotate the installation during the use, strengthened the two on the one hand and rotated the connection position intensity, improved and rotated erection joint efficiency, but on the other hand mounting direct mount is in the position that is close to the rotation center to can realize the locking and the unblock of two connecting pieces through the rotation of moving part, need not design the mounted position in addition again, reduce occupation of installation space.

Preferably, the method comprises the following steps: the movable piece comprises a first operating arm and a second operating arm which form an included angle with each other and are integrated, a shaft hole is formed in the joint position of the first operating arm and the second operating arm, and an installation shaft matched with the shaft hole is arranged on the second connecting piece;

the first and second manipulator arms extend towards adjacent sides of the second link respectively, and an end of either of the first and second manipulator arms has an unlocking arm extending towards the first link, an end of the unlocking arm forming the locking head. Scheme more than adopting, through the equal operatable moving part of two operation arms, make it rotate around the installation axle and carry out the unblock, be convenient for set up corresponding unblock subassembly as required, adapt to more unblock modes.

Preferably, the method comprises the following steps: and a retaining piece used for retaining the locking head in the locking groove is arranged between the second connecting piece and the movable piece. By adopting the scheme, the two connecting pieces can be ensured to be connected in any posture through the retaining piece, and the locking heads can be positioned in the locking grooves under the locking condition, so that the locking reliability is improved.

Preferably, the method comprises the following steps: the holding piece is a spring piece, one end of the holding piece is abutted to the second connecting piece, the other end of the holding piece is fixed on the moving piece, and the unlocking arm has a tendency of rotating around the rotating center of the moving piece. The spring piece of metal is used as a retaining piece, so that the implementation is convenient, the cost is low, the shape retaining capacity is good, and the integral strength is improved.

Preferably, the method comprises the following steps: the side surface of the movable piece is provided with a sinking groove used for installing the spring piece, and the sinking groove is provided with an open end. By adopting the scheme, the spring piece is convenient to mount quickly, and one end of the spring piece penetrates out and is fixed.

Preferably, the method comprises the following steps: and a balance arm is arranged between the unlocking arm and the second operating arm, the balance arm extends upwards in an inclined way towards the side far away from the shaft hole, and the spring piece extends along the outlines of the second operating arm, the unlocking arm and the balance arm. By adopting the scheme, the balance arm balances the whole gravity center of the moving part, so that the moving part is closer to the intersection position of the unlocking arm and the second control arm, the unlocking is relatively easier and labor-saving, the spring piece acts on the second control arm, the unlocking arm and the balance arm simultaneously, the spring piece is prevented from sliding relatively with the fixed end, the mounting reliability and stability of the spring piece are relatively improved, and the service life is prolonged.

Preferably, the method comprises the following steps: the spring piece comprises a fixed part and a first bending part, a second bending part, a third bending part, a fourth bending part and a fifth bending part which are arranged in sequence from the end part of the fixed part and extend towards the fixed part in an inclined manner, and the joint position of the first bending part and the second bending part is positioned outside the sinking groove;

first bending portion and third bending portion are located the upper and lower both sides of second bending portion respectively, and wherein second bending portion and third bending portion are located second control arm and release arm respectively, fourth bending portion is located one side relative with third bending portion on the release arm, and fifth bending portion inclination is less than the inclination of third bending portion. The spring piece with the structure is beneficial to improving the stability of the whole shape of the spring piece, prevents the spring piece from sliding with the sink groove, and can enable larger elastic force to act on the locking head, thereby improving the reliability and stability of the spring piece.

Preferably, the method comprises the following steps: and a connecting part is arranged between the third bending part and the fourth bending part, and the connecting part is parallel to the end face of the locking head. By adopting the scheme, the elastic action area is increased through the connecting part, the locking head is prevented from being deflected or easily retreated from the locking groove due to uneven local stress, and the reliability of the retainer is further improved.

Preferably, the method comprises the following steps: the connecting position of the first bending part and the second bending part is close to the open end. By adopting the scheme, when the first bending part and the second bending part rotate relatively, the joint positions of the first bending part and the second bending part can be kept relatively still, and the elastic restoring force generated by the deformation of the first bending part and the second bending part can be basically acted on the movable part.

Preferably, the method comprises the following steps: the width of the spring piece is less than or equal to the depth of the sinking groove. The spring piece is matched with the specific shape of the spring piece, so that the spring piece is prevented from warping after being used for a long time and protrudes out of the sinking groove, and the service life of the spring piece is prolonged.

Compared with the prior art, the invention has the beneficial effects that:

by adopting the rotation locking mechanism provided by the invention, the locking between two connecting pieces with smaller rotation radius is realized by a relatively simpler and more compact structure, the installation space is saved, the installation efficiency is improved, and the rotation locking mechanism has good reliability and stability.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is an isometric view of FIG. 2;

FIG. 4 is a schematic view of the fastener structure;

FIG. 5 is a schematic view of a rear side structure of the movable member;

FIG. 6 is a schematic view of a front side structure of the movable member;

FIG. 7 is a schematic view of the structure of the holder;

fig. 8 is a schematic diagram of the use of the present invention.

Detailed Description

The present invention will be further described with reference to the following examples and the accompanying drawings.

Referring to fig. 1 to 7, a rotation locking mechanism mainly includes a first connecting member and a second connecting member pivotally connected to each other, and a fixed member 1 and a movable member 2 respectively disposed on the first connecting member and the second connecting member, wherein the fixed member 1 is fixedly disposed relative to the connecting member 1, and the movable member 2 is rotatably disposed relative to the second connecting member, and is capable of rotating relative to the movable member 2, and at the same time, the fixed member 1 has a locking groove 10 disposed parallel to a rotation plane of the movable member 2, and the movable member 2 has a locking head 20 adapted to the locking groove 10, when the movable member 2 rotates, the locking head 20 can be inserted into the locking groove 10 to lock the relative positions of the first connecting member and the second connecting member, and when the movable member 2 rotates to withdraw the locking head 20 from the locking groove 10, the first connecting member and the second connecting member can be unlocked, the first and second connectors may be relatively rotatable.

The structure of the present application will be further described with reference to fig. 8, in which the structure is used in a seat headrest, and the headrest framework 4 and the headrest rods 5 are pivotally mounted to provide a flip-fold function to the headrest.

As shown in the figure, the headrest rod 5 is used as a first connecting member, the headrest framework 4 is used as a second connecting member, wherein the headrest rod 5 has a horizontally arranged mounting section 50, the headrest framework 4 is formed by surrounding a front shell 4a in a hollow box-shaped structure and a rear cover 4b in a cover-shaped structure, a mounting space is arranged in the headrest framework, the fixing member 1 is generally in a cam shape and is sleeved in the middle of the mounting section 50, the locking groove 10 is positioned on the upper side of the fixing member 3 and is arranged in parallel with the mounting section 50, the left end and the right end of the locking groove 10 are open so as to ensure that the locking head 20 can enter and exit the locking groove 10 from the end part, the headrest framework 4 is rotatably connected with the headrest rod 5, and after the mounting is completed, the fixing member 1 is positioned in.

The movable member 2 mainly includes a first operating arm 21 and a second operating arm 22 which are mutually angled, as shown in the figure, the joint position of the first operating arm 21 and the second operating arm 22 has a shaft hole 23 penetrating through both sides of the joint position in the thickness direction, the headrest framework 4 has a mounting shaft 40 matching with the shaft hole 23, in the embodiment, the mounting shaft 40 is positioned above the headrest rod 5 and close to the right side of the headrest framework 4, the first operating arm 21 extends towards the bottom of the headrest framework 4, the second operating arm 22 extends towards the left side of the headrest framework 4, meanwhile, one end of the second operating arm 22 far away from the mounting shaft 40 has a unlocking arm 24 extending towards the bottom of the headrest framework 4, the unlocking arm 24 is in a substantially parallel posture with the first operating arm 21, and the end of the unlocking arm 24 is configured as a locking head 20 matching with the locking groove 10, in order to ensure that the locking head 20 can smoothly pass through the locking groove 10 through rotation, and to ensure stability in the locking groove 10, the end of the locking head 20 is designed in an arc shape, and its lowest point just abuts against the bottom wall of the locking groove 10 when it enters the locking groove 10.

In the present application, a retaining member 3 for retaining the locking head 20 in the locking groove 10 is provided between the second connecting member and the movable member 2, specifically, the retaining member 3 is provided between the headrest frame 4 and the movable member 2, in the present embodiment, a spring plate made of metal is preferably used as the retaining member 3, and as shown in the drawing, one end of the spring plate is fixed to the headrest frame 4, and the fixing point thereof is located above the mounting shaft 40, and the other end is fixed to the movable member 2, and the unlocking arm 24 has a tendency to rotate toward the side where the mounting shaft 40 is located.

Specifically, the front side of the movable member 2 has a sinking groove 25 adapted to the spring plate, the sinking groove 25 has an open end 250, the open end 250 is located above the shaft hole 23, the other end is a closed end, the movable member 2 further has a balance arm 26 integrally formed, the balance arm 26 is located between the unlocking arm 24 and the second manipulating arm 22 and extends obliquely towards the upper left of the headrest framework 4, and the sinking groove 25 is arranged along the contour of the second manipulating arm 22, the unlocking arm 24 and the balance arm 26 and mainly comprises a middle section 251 located on the unlocking arm 24 and having a substantially V-shape, and a downward section 252 and an upward section 253 respectively connecting two ends of the middle section 251.

As shown, the downward section 252 is located on the second manipulating arm 22 and extends obliquely downward, the outer end of the downward section is open to form an open end 250, the upward section 253 is located on the balance arm 26 and extends obliquely upward, the general shape of the spring plate is adapted to the sinking groove 25 and also extends substantially along the contour of the second manipulating arm 22, the unlocking arm 24 and the balance arm 26, the spring plate mainly comprises a fixing portion 30 fixedly connected with the headrest framework 4, and a first bending portion 31, a second bending portion 32, a third bending portion 33, a fourth bending portion 34 and a fifth bending portion 35 which are arranged in sequence from the end of the fixing portion 30 and all extend obliquely toward the fixing member 1, and the joining position of the first bending portion 31 and the second bending portion 32 is located outside the sinking groove 25.

The fixing portion 30 is substantially parallel to the side portion of the headrest framework 4, that is, is approximately perpendicular to the length direction of the locking groove 10, the first bending portion 31 and the third bending portion 33 are respectively located on the upper side and the lower side of the second bending portion 32, the inclination angle (relative to the locking groove 10) of the second bending portion 32 is smaller than that of the first bending portion 31, the inclination angle of the third bending portion 33 is larger than that of the first bending portion 31, the included angle between adjacent bending portions is about 120 °, the second bending portion 32 and the third bending portion 33 are respectively located on the second manipulating arm 22 and the unlocking arm 24, the fourth bending portion 34 is located on the side of the unlocking arm 24 opposite to the third bending portion 33, and the inclination angle of the fifth bending portion 35 is smaller than that of the third bending portion 33.

The shape of the spring leaf is adapted to the sinking groove 25 to ensure that the spring leaf can be inserted into the sinking groove 25, the fixing part 30 of the spring leaf penetrates out of the open end 250 and is fixed on the headrest framework 4, and the connecting position of the first bending part 31 and the second bending part 32 is close to the open end 250 to ensure that good supporting capability can be provided for the spring leaf. When the moving member 2 rotates clockwise, the spring piece is in a state of contracting and storing energy, and can effectively limit relative sliding between the spring piece and the sinking groove 25 through the middle section 251 and the ascending section 253, so that the elastic force can be better applied to the moving member 2, and the larger elastic force can be applied to the locking head 20 through the middle section 251.

In the embodiment, the connecting portion 36 is integrally formed between the third bending portion 33 and the fourth bending portion 34, as shown in the figure, the third bending portion 33, the connecting portion 36 and the fourth bending portion 34 are integrally shaped to fit the middle section 251, the connecting portion 36 is close to the end of the locking head 20 and is substantially parallel to the end surface of the locking head 20, the width of the spring piece is less than or equal to the depth of the sunken groove 25, so that the spring piece is prevented from being warped and falling out of the sunken groove 25, and the mounting stability and reliability are improved.

As shown in the figures, in this embodiment, two unlocking modes are adapted to the folding of the headrest, so the end of the lower end of the first operating arm 21 is provided with the triggering portion 210, the thickness of the triggering portion 210 is increased to increase the contact area, the side portion of the headrest framework 4 is provided with the button 6 which is over against the triggering portion 210, the moving member 2 can be rotated by pushing the button 6 to overcome the elastic action of the spring piece, and the locking head 20 is driven to exit from the other side of the locking groove 10, the second operating arm 22 is provided with the clamping hole 220, the headrest framework 4 is correspondingly provided with the stay cable 7, the stay cable head of the stay cable 7 is clamped with the clamping hole 220, the second operating arm 21 is directly pulled by the stay cable 7, and the rotation of the moving member 2 can be realized.

On the other hand, after the headrest framework 4 and the headrest rod 5 are unlocked, the headrest framework 4 can automatically turn forwards to achieve a folding posture, so that a torsion spring 8 is arranged between the fixing piece 1 and the headrest rod 4, as shown in the figure, a hanging shaft 11 arranged in parallel with the lock groove 10 is arranged on the fixing piece 1, one end of the torsion spring 8 is fixed on the hanging shaft 11, the other end of the torsion spring 8 is fixed on the headrest framework 4, and thrust is applied to the headrest framework 4, so that the headrest framework has a forward rotating trend, after the headrest framework is unlocked through the button 6 or the inhaul cable 7, the headrest framework 4 can turn forwards under the action of the torsion spring 8, the headrest framework is relatively easy and labor-saving, the hanging shaft 11 is integrated on the fixing piece 1, and the structure change of the headrest rod 5 is favorably reduced.

Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.

Claims

1. A rotation lock mechanism comprising a first link and a second link rotatably connected, characterized in that: be equipped with mounting (1) and moving part (2) on first connecting piece and the second connecting piece respectively, wherein mounting (1) has locked groove (10), has locking head (20) with locked groove (10) matching on moving part (2), mounting (1) and first connecting piece fixed connection, moving part (2) rotate the setting relatively the second connecting piece, and it can rotate relatively mounting (1) to make locking head (20) get into locked groove (10) with first connecting piece and second connecting piece locking, or withdraw from locked groove (10) in order to unblock second connecting piece and first connecting piece.

2. The rotational lock mechanism of claim 1, wherein: the movable piece (2) comprises a first operating arm (21) and a second operating arm (22) which form an included angle with each other and are integrated, a shaft hole (23) is formed in the joint position of the first operating arm (21) and the second operating arm (22), and a mounting shaft matched with the shaft hole (23) is arranged on the second connecting piece;

the first and second manipulator arms (21, 22) extend towards adjacent sides of the second connection member, respectively, and an end of either of the first and second manipulator arms (21, 22) has a release arm (24) extending towards the first connection member, an end of the release arm (24) forming the locking head (20).

3. The rotational lock mechanism of claim 2, wherein: and a retaining element (3) for retaining the locking head (20) in the locking groove (10) is arranged between the second connecting element and the movable element (2).

4. The rotational lock mechanism of claim 3, wherein: the retaining piece (3) is a spring piece, one end of the retaining piece is abutted against the second connecting piece, the other end of the retaining piece is fixed on the moving piece (2), and the unlocking arm (24) has a tendency of rotating around the rotating center of the moving piece (2).

5. The rotational lock mechanism of claim 4, wherein: the side surface of the movable piece (2) is provided with a sinking groove (25) for mounting the spring piece, and the sinking groove (25) is provided with an open end (250).

6. The rotation lock mechanism according to claim 4 or 5, wherein: the unlocking arm (24) and the second operating arm (22) are provided with a balance arm (26), the balance arm (26) extends obliquely upwards towards the side far away from the shaft hole (23), and the spring piece extends along the outline of the second operating arm (22), the unlocking arm (24) and the balance arm (26).

7. The rotational lock mechanism of claim 6, wherein: the spring piece comprises a fixing part (30), a first bending part (31), a second bending part (32), a third bending part (33), a fourth bending part (34) and a fifth bending part (35), wherein the first bending part (31), the second bending part (32), the third bending part (33), the fourth bending part (34) and the fifth bending part (35) are sequentially arranged from the end part of the fixing part (30) and extend towards the fixing part (1) in an inclined mode, and the joint position of the first bending part (31) and the second bending part (32) is located outside the sinking groove (25);

first portion of bending (31) and third portion of bending (33) are located the upper and lower both sides of second portion of bending (32) respectively, and wherein second portion of bending (32) and third portion of bending (33) are located second control arm (22) respectively and are separated locking arm (24), fourth portion of bending (34) are located one side relative with third portion of bending (33) on separating locking arm (24), and fifth portion of bending (35) inclination is less than the inclination of third portion of bending (33).

8. The rotational lock mechanism of claim 7, wherein: and a connecting part (36) is arranged between the third bending part (33) and the fourth bending part (34), and the connecting part (36) is parallel to the end face of the locking head (20).

9. The rotational lock mechanism of claim 7, wherein: the joint position of the first bending part (31) and the second bending part (32) is close to the open end (250).

10. The rotation lock mechanism according to claim 4 or 5, wherein: the width of the spring piece is less than or equal to the depth of the sinking groove (25).