CN212185855U - Angle adaptation mechanism - Google Patents

Abstract

The utility model discloses an angle adapting mechanism, which comprises a box body, wherein the box body comprises a connecting part and an extending part which are mutually angled, a movably arranged rear spring seat is arranged in the connecting part, the rear spring seat can slide along the length direction of the connecting part, and an elastic element is abutted in front of the rear spring seat; the connecting rod is arranged behind the rear spring seat and is rotatably arranged in the extension part, the box body is provided with a stop structure behind the connecting rod, the connecting rod is provided with a part protruding out of the end part of the extension part, and when the upper part of the connecting rod is pushed backwards, the lower end of the connecting rod can compress the elastic element through the rear spring seat and rotate forwards to change the relative angle between the connecting rod and the box body. The included angle between two relatively independent parts is changed through ingenious structure, different installation or use requirements are met, the structure is stable and reliable, a modular assembly structure is adopted, the overall processing precision and the assembly difficulty are reduced, and the economic benefit is improved.

Description

Angle adaptation mechanism

Technical Field

The utility model relates to a corner connection structure field, concretely relates to angle adaptation mechanism.

Background

In daily life or enterprise's production, can involve usually that two adjacent parts need have certain normal running fit angle between to adapt to different use scenes or modes, the mode that pivot connection or ball hank are connected is mostly taken to current corner connection structure, and its structure is complicated relatively, and the machining precision requirement of part is higher, has increased the assembly degree of difficulty simultaneously. For example, between the seat back and the seat plate, in order to meet the purpose of adjusting the inclination angle of the seat back, plastic materials are usually adopted to manufacture the seat back, and the requirements are met through the elastic deformation capacity of the seat back, however, for some hard seat backs such as wooden seat backs, the connection can only be completed by means of complex connecting mechanisms, and the stability and the reliability are relatively poor.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides an angle adaptation mechanism can be used to the contained angle between two adapting unit to change, and overall structure is simple ingenious, reduces machining precision and the assembly degree of difficulty etc..

In order to achieve the above purpose, the utility model discloses technical scheme as follows:

an angle adaptation mechanism, its key lies in: the box body comprises a connecting part and an extending part, wherein the connecting part is horizontally arranged, the extending part extends upwards along the rear end of the connecting part, a movably arranged rear spring seat is arranged in the connecting part, the rear spring seat can slide along the length direction of the connecting part, and an elastic element is abutted in front of the rear spring seat;

the rear part of the rear spring seat is provided with a connecting rod which is rotatably arranged in the extending part, the rear part of the connecting rod on the box body is provided with a stop structure, the upper part of the connecting rod protrudes out of the end part of the extending part, and when the upper part of the connecting rod is pushed backwards, the lower end of the connecting rod can compress the elastic element through the rear spring seat and rotate forwards to change the relative angle between the connecting rod and the box body.

Scheme more than adopting, back spring holder, swing joint's link mechanism is constituteed to connecting rod and elastic element, like this when the connecting rod receives the exogenic action, then can rely on elastic element's the realization of stepping down to rotate, thereby change the relative angle between its and the box body, and elasticity resilience through elastic element combines the spacing of backstop structure, can realize the stability of connecting rod initial position, its assembly structure is simple, the part is easily obtained, the machining precision requires lowly, greatly reduced economic cost, and utilize the box body equipment, be convenient for realize the modular assembly of mechanism, assembly efficiency when improving the use.

Preferably, the method comprises the following steps: the middle part is arranged between the connecting rod and the rear spring seat, the middle part is provided with a connecting hole matched with the lower end of the connecting rod, the rear side of the rear spring seat is provided with an arc-shaped groove A, the width direction of the box body of the arc-shaped groove A is arranged, the lower end of the front side of the middle part is provided with an arc-shaped protruding portion matched with the arc-shaped groove A, and when the rear spring seat is in an initial state under the action of the elastic element, the arc-shaped groove A of the rear spring seat is abutted to the arc-shaped protruding. By adopting the structure, the non-fixed installation between the connecting rod and the rear spring seat is realized through the intermediate piece, only the contact assembly is needed, a good allowance space is provided for the rotation of each part, the part processing difficulty and the assembly difficulty are reduced, and the running reliability of the mechanism is improved.

Preferably, the method comprises the following steps: the elastic element is a spring, a front spring seat is arranged in the box body in front of a rear spring seat, and the spring is sleeved on the front spring seat;

the place ahead of spring holder in the front in the box body is equipped with the fixed axle, the fixed axle sets up along the width direction of box body, and preceding spring holder front side have with the arc wall B that the fixed axle suited, preceding spring holder is under the spring action, its arc wall B and fixed axle butt. Scheme more than adopting, can effectively guarantee the stability when elastic element compresses and resets through preceding spring holder, prevent to twist reverse the condition such as card dead deformation and take place, simultaneously through arc wall B and fixed axle cooperation for preceding spring holder has certain angle adaptability that deflects, is favorable to further improving the flexibility ratio and the reliability of mechanism work, thinks about ingeniously.

Preferably, the method comprises the following steps: the box body includes box body and lower box body, wherein goes up the box body and constitutes with box body lock part down connecting portion, go up the box body rear end and buckle towards one side extension part and constitute the extension, the rear side of extension is uncovered. Through above-mentioned box body structure, the quick installation of the inner part of being convenient for is changed, improves its assembly performance, and can guarantee holistic stability.

Preferably, the method comprises the following steps: the left side and the right side of the upper box body are provided with blocking edges which are opposite to the lower box body and extend, the blocking edges are provided with clamping holes which are arranged along the length direction of the blocking edges, and the lower box body is provided with an inverted hanging clamp which is matched with the clamping holes;

the upper box body and the lower box body are provided with through holes which are opposite to each other, and a sinking groove is formed in the position, corresponding to the through holes, of the bottom of the lower box body.

By adopting the scheme, the quick clamping of the upper box body and the lower box body is convenient to realize, the mechanism is fixedly connected with a use object as a module, and the assembly efficiency and the reliability of the mechanism are improved.

Preferably, the method comprises the following steps: the backstop structure is the back shaft that sets up along box body width direction, the back shaft is located the middleware directly behind, the rear side of middleware has the arc wall C that suits with the back shaft, the middleware is under the elastic element effect, arc wall C and back shaft butt. By adopting the scheme, the supporting shaft can provide a fulcrum for the intermediate piece, bear certain component force, reduce the bearing of the connecting rod mounting shaft, be beneficial to prolonging the service life of the connecting rod mounting shaft, limit the backward rotation stroke of the connecting rod and improve the controllability of the angle application range of the connecting rod mounting shaft.

Preferably, the method comprises the following steps: the rear end of the lower box body is provided with a shielding part which is bent and extends upwards to the rear part of the supporting shaft. By adopting the scheme, the internal parts can be effectively prevented from being exposed, and meanwhile, impurities such as dust are prevented from invading the box body, so that the rotation flexibility is influenced or the service life of the elastic element is reduced.

Preferably, the method comprises the following steps: the angle adapting mechanism is provided with a lock pin, the box body is provided with a lock hole for installing the lock pin, and when the lock pin is arranged in the lock hole, the lock pin is positioned in front of the middle piece and is abutted against the front side of the middle piece. When the angle adaptation function of the mechanism is limited, the mechanism is only required to be inserted into the lock hole, the position of the intermediate piece is limited by matching with the stop structure, the intermediate piece is prevented from rotating, and the connecting piece connected with the box body and the connecting piece matched with the connecting rod are in a fixed posture and are not influenced by external force.

Preferably, the method comprises the following steps: the front side of the middle part is provided with an arc-shaped groove D which is matched with the lock pin. By adopting the scheme, the mode of increasing the contact area of the two components is adopted, the relative sliding is prevented, and the clamping limiting effect on the intermediate piece is improved.

Preferably, the method comprises the following steps: the lower part of the connecting rod is of an arc-shaped structure. The connecting rod with the structure is convenient to match with the box body with the arc corners, avoids the interference of the rotating process and the box body and has larger rotating space.

Compared with the prior art, the beneficial effects of the utility model are that:

adopt the utility model provides an angle adaptation mechanism realizes the contained angle change between two relatively independent parts through ingenious structure, satisfies different installation or user demand, and stable in structure is reliable, adopts modular package assembly, has reduced whole machining precision and the assembly degree of difficulty, is favorable to improving economic benefits.

Drawings

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

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic structural view of an intermediate member;

FIG. 4 is a schematic view of the bottom structures of the upper box body and the lower box body;

FIG. 5 is a schematic view of an installation and use state of the present invention;

FIG. 6 is a cross-sectional view of FIG. 5;

FIG. 7 is an enlarged view of a portion A of FIG. 5;

FIG. 8 is a schematic view of an alternative use condition of the mounting structure shown in FIG. 5;

FIG. 9 is a cross-sectional view of FIG. 8;

FIG. 10 is an enlarged view of a portion of FIG. 8 at B;

FIG. 11 is a bottom structure of the seat plate;

fig. 12 is a schematic view of the bottom structure of the backrest.

Detailed Description

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

Referring to fig. 1 to 4, the angle adaptive mechanism mainly comprises a box 54 used as a mounting body, the box 54 mainly comprises a connecting part 540 and an extending part 541 which are mutually angled, wherein the extending part 541 is a hollow structure and is provided with a movably arranged spring seat 50 therein, the front of the spring 50 is abutted with an elastic element 51, the extending part 541 is bent and extends from the rear end of the connecting part 540 to one side thereof, the extending part 541 is a hollow structure with three sides enclosed, a connecting rod 52 is rotatably arranged in the extending part, the connecting rod 52 is hinged with the extending part 541 through a rotating shaft 59, and the rotating shaft 59 is positioned in the middle of the connecting rod 52.

The connecting rod 52 is arranged along the length direction of the extending part 541 and has an end part at least partially protruding out of the extending part 541, the connecting rod 52 is located behind the rear spring seat 50, the box body 54 is provided with a stop structure behind the connecting rod 52, when the upper part of the connecting rod 52 is pushed backwards, the lower end of the connecting rod 52 can directly or indirectly compress the elastic element 51 through the rear spring seat 50, so as to rotate forwards, and realize the change of the relative angle with the box body 54, and in the design state, the position of the connecting rod 52 is simultaneously limited by the elastic element 51 and the stop structure, so that the relative position can be kept unchanged, the lower end of the connecting rod cannot move in the direction far away from the elastic element 51, correspondingly, if the connecting rod 52 is used for connecting and installing the connecting piece A and the connecting piece B, namely the box body 54 is fixed on the connecting piece A, and the connecting piece B is fixedly connected, the relative angle between the connecting rod 52 and the connecting piece a can be changed adaptively through the rotation of the connecting rod.

Referring to fig. 1, 2 and 4, in order to sufficiently improve the assembly efficiency of the mechanism, in the embodiment, the box 54 mainly includes an upper box 54a and a lower box 54b that are fastened to each other, the fastening portion of the two boxes forms a connecting portion 540 of the box 54, the rear end of the upper box 54a is bent toward one side and extends to form an extension 541, the cross section of the extension 541 is substantially U-shaped, and the opening of the extension 541 faces backward, wherein two sides of the upper box 54a have blocking edges extending over against the lower box 54b, the blocking edges have transversely disposed fastening holes 545, and the lower box 54b has an inverted fastener 544 cooperating with the fastening holes 545, and the upper and lower boxes are quickly fastened by cooperation of the inverted fastener 544 and the fastening holes 545.

The upper box body 54a and the lower box body 54b of the box body 54 are provided with through holes 546 which are arranged oppositely, the through holes 546 are mainly used for installing connecting screws, and meanwhile, the bottom of the lower box body 54b is provided with a sinking groove 547 corresponding to the position of the through holes 546, so that when the box body is installed, the screws penetrate from the bottom of the lower box body 54b, and the cap ends of the screws are embedded into the sinking groove 547, thereby being beneficial to improving the appearance quality of an installation structure and avoiding exposed hooks from hanging injuries to people and other objects.

In order to sufficiently improve the reliability and stability of the operation of the mechanism, in the present embodiment, an intermediate member 53 is further provided between the link 52 and the rear spring seat 50, as shown in fig. 2 and 3, the intermediate member 53 has a tubular structure, one end of which has a coupling hole 530 coupled to the lower end of the link 52, the lower end of the link 52 being inserted into the coupling hole 530, and the coupling hole 530 having a certain plastic deformability, so as to ensure the clamping of the connecting rod 52 and reduce the shaking abnormal sound, the rear side of the rear spring seat 53 is provided with an arc-shaped groove A500 arranged in the width direction, the front side of the lower end of the middle piece 53 is provided with an arc-shaped bulge 531 matched with the arc-shaped groove A500, the rear spring seat 53 is under the action of the elastic element 51, the arc-shaped groove A500 is closely attached to the arc-shaped protruding part 531, and the arc-shaped groove A and the arc-shaped protruding part 531 are matched through an arc surface, so that the arc-shaped groove A and the arc-shaped protruding part are relatively easy to rotate, the position cannot be fixed too fast, and the connecting rod 52 can rotate more flexibly and stably.

The stop structure of the present embodiment is the supporting shaft 57 disposed along the width direction of the box 54, as shown in fig. 1 and fig. 2, two ends of the supporting shaft 57 are fixed on two sides of the lower end of the extending portion 541, and the supporting shaft 57 is located at the rear side of the intermediate member 53, the rear side of the intermediate member 53 has an arc-shaped groove C532 adapted to the supporting shaft 57, in an initial state, under the action of the elastic element 51, the arc-shaped groove C532 and the supporting shaft 57 are in a contact state, and mainly limits the backward stroke thereof, meanwhile, in order to avoid the exposure of the internal component or the intrusion of impurities into the inside, the rear end of the lower box 54b has a shielding portion 542 bent upward and extending to the rear of the supporting shaft 57, and the shielding portion 542.

In addition, in this embodiment, it is preferable that a spring is used as the elastic element 51, the case 54 has a front spring seat 55 disposed in front of the rear spring seat 50, the front spring seat 55 and the rear spring seat 50 are connected to each other through a rod portion, the spring is movably sleeved on the rod portion, front and rear ends of the spring are respectively abutted against the front spring seat 55 and the rear spring seat 50, and since the connecting rod 52 may drive the rear spring seat 50 to generate a deviation in height during the rotation process, in order to ensure the centering performance of the spring, the front spring seat 55 is also movably installed, as shown in fig. 1 and fig. 2, the case 54 has a fixing shaft 56 disposed in front of the front spring seat 55, the fixing shaft 56 is disposed along the width direction of the case 54, and the front side of the front spring seat 55 has an arc-shaped groove B550 adapted to the fixing shaft 56, and in the initial state, the front spring seat 55, the arc-shaped groove B550 at the front side of the spring seat abuts against the fixed shaft 66, so that when the front spring seat 55 is subjected to axial load, only circumferential rotation can be generated along the fixed shaft 56, horizontal deflection cannot be generated, and the reliability of spring extension and retraction can be effectively ensured.

Considering the optional use of the mechanism function and the diversification of the user's requirements, the angle adaptive mechanism of the present application is further configured with a lock pin 58, as shown in fig. 1 to 3, a lock hole 543 for transversely installing the lock pin 58 is provided at a position close to a corner on both sides of the rear end of the upper box 54a, the lock hole 543 is located in front of the support shaft 57 and slightly above, with the intermediate member 53 at the initial position, the lock hole 543 is located in front of the intermediate member 53 and above the rear spring seat 50, and the front side of the intermediate member 53 has an arc-shaped groove D533 adapted to the lock pin 58, so that when the backrest 4 needs to be kept still, the lock pin 58 is only inserted into the lock hole 543, and the rotation of the intermediate member 53 is limited by the lock pin 58 and the support shaft 57, which has a simple and reliable structure and is convenient to operate.

In this embodiment, the box body 54 is in an arc shape, so the lower end of the connecting rod 52 is designed to be in an arc shape, when the connecting rod 52 is installed, the inner side of the lower end in the arc radial direction faces the front of the box body 54, so that the lower arc-shaped protruding part of the connecting rod 52 can contact with other parts, a certain bearing effect is achieved, the burden of the rotating shaft 59 is reduced, the connecting rod 52 can have a large rotating range, and the like.

Referring to fig. 1 to 12, the angle adaptive mechanism is used for connecting a seat plate 3 and a backrest 4, as shown in the drawings, the seat plate 3 has symmetrically arranged mounting holes 30 on both sides, the mounting holes 30 are used for mounting the angle adaptive mechanism, the mounting holes 30 mainly include a transverse slot 300 adapted to a connecting portion 540, and a vertical hole 301 adapted to an extending portion 541, wherein the transverse slot 300 is located at the bottom of the seat plate 3 with its opening facing downward, the vertical hole 310 is located at the rear end of the transverse slot 300 and is communicated therewith, a protruding portion 32 protruding from the upper surface of the seat plate 3 is located at a position corresponding to the vertical hole 310 on the seat plate 3, and the upper end surface of the protruding portion 32 is a smooth flat end surface. The stud 31 corresponding to the through hole 546 at the bottom of the transverse slot 300 is assembled, the connecting part 540 of the box 54 is embedded into the transverse slot 300 and can be fixedly connected with the stud 31 through a screw, the extension 541 is inserted into the vertical hole 301, and the upper end of the connecting rod 52 penetrates out of the upper end of the protruding part 32.

The two sides of the lower end of the backrest 4 are provided with the insertion holes 40 matched with the connecting rod 52, and the projection of the hole wall end face corresponding to the insertion hole 40 in the vertical direction is in a zigzag shape or a smooth arc shape, so that when the lower end of the backrest 4 is inserted and fixed on the connecting rod 52, the hole wall end face of the insertion hole 40 and the end face of the protruding part 32 cannot be attached in a seamless manner, and a certain space needs to be reserved for rotation.

Referring to fig. 5 to 7, the angle adapting mechanism is in an initial state, the rear side of the intermediate member 53 abuts against the support shaft 57, the front side of the hole wall end surface of the insertion hole 40 abuts against the end surface of the protruding part 32, and a large gap is formed between the rear side of the hole wall end surface of the insertion hole 40 and the end surface of the protruding part 32; referring to fig. 8 to 10, when the backrest 4 is pushed backward, the connecting rod 52 compresses the spring through the intermediate piece 53, the spring is pressed, the intermediate piece 53 moves forward along with the rear spring seat 50 and deflects by a certain angle, correspondingly, the connecting rod 52 deflects by an angle, and the backrest 4 rotates backward, at this time, the middle part of the end surface of the hole wall of the insertion hole 40 abuts against the end surface of the protruding part 32, and gaps appear on the front side and the rear side of the insertion hole, and similarly, when a larger pushing force is applied to the backrest 4, the backrest 4 can still rotate backward continuously until the rear side of the end surface of the hole wall of the insertion hole 40 abuts against the end surface of the protruding part 32.

If the angle between the backrest 4 and the seat plate 3 needs to be fixed during use, the mechanism is only taken out, and the locking pin 58 is installed in the locking hole 542 to lock the intermediate member 53, and at this time, the link 52 only plays a role of mounting the backrest 4.

Finally, it should be noted that the above 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 the scope of the present invention.

Claims (10)

1. An angle adaptation mechanism which characterized in that: the portable box comprises a box body (54), wherein the box body (54) comprises a connecting part (540) arranged horizontally and an extending part (541) extending upwards along the rear end of the connecting part (540), a rear spring seat (50) movably arranged is arranged in the connecting part (540), the rear spring seat (50) can slide along the length direction of the connecting part (540), and an elastic element (51) is abutted to the front of the rear spring seat (50);

the rear spring seat (50) is provided with a connecting rod (52) at the rear part, the connecting rod (52) is rotatably arranged in the extension part (541), the box body (54) is provided with a stop structure at the rear part of the connecting rod (52), the upper part of the connecting rod (52) protrudes out of the end part of the extension part (541), when the upper part of the connecting rod (52) is pushed backwards, the lower end of the connecting rod can compress the elastic element (51) through the rear spring seat (50) and rotate forwards to change the relative angle between the connecting rod (52) and the box body (54).

2. The angle adapting mechanism according to claim 1, wherein: be equipped with intermediate member (53) between connecting rod (52) and back spring holder (50), intermediate member (53) have with connecting hole (530) that connecting rod (52) lower extreme matches, back spring holder (50) rear side has arc wall A (500), the width direction of box body (54) of arc wall A (500) sets up, intermediate member (53) front side lower extreme have with arc wall A (500) adapted arc bulge (531), when back spring holder (50) is in initial condition under elastic element (51) effect, its arc wall A (500) and arc bulge (531) butt.

3. The angle adapting mechanism according to claim 1, wherein: the elastic element (51) is a spring, a front spring seat (55) is arranged in front of the rear spring seat (50) in the box body (54), and the spring is sleeved on the front spring seat (55);

a fixed shaft (56) is arranged in front of a front spring seat (55) in the box body (54), the fixed shaft (56) is arranged along the width direction of the box body (54), an arc-shaped groove B (550) matched with the fixed shaft (56) is formed in the front side of the front spring seat (55), and under the action of a spring, the arc-shaped groove B (550) of the front spring seat (55) is abutted to the fixed shaft (56).

4. The angle adapting mechanism according to claim 2 or 3, wherein: the box body (54) comprises an upper box body (54a) and a lower box body (54b), wherein the buckling parts of the upper box body (54a) and the lower box body (54b) form the connecting part (540), the rear end of the upper box body (54a) is bent towards one side to form the extending part (541), and the rear side of the extending part (541) is open.

5. The angle adjustment mechanism of claim 4, wherein: the left side and the right side of the upper box body (54a) are provided with blocking edges which are opposite to the lower box body (54b) in extension, the blocking edges are provided with clamping holes (545) arranged along the length direction of the blocking edges, and the lower box body (54b) is provided with an inverted clamp (544) matched with the clamping holes (545);

the upper box body (54a) and the lower box body (54b) are provided with through holes (546) which are arranged in a right-to-right mode, and the bottom of the lower box body (54b) is provided with a sinking groove corresponding to the through holes (546).

6. The angle adjustment mechanism of claim 4, wherein: the stop structure is a supporting shaft (57) arranged along the width direction of the box body (54), the supporting shaft (57) is positioned right behind the middle part (53), an arc-shaped groove C (532) matched with the supporting shaft (57) is formed in the rear side of the middle part (53), and under the action of the elastic element (51), the arc-shaped groove C (532) is abutted to the supporting shaft (57) by the middle part (53).

7. The angle adapting mechanism according to claim 6, wherein: the rear end of the lower box body (54b) is provided with a shielding part (542) which is bent and extends upwards to the rear of the supporting shaft (57).

8. The angle adjustment mechanism of claim 4, wherein: the angle adaptive mechanism is provided with a lock pin (58), the box body (54) is provided with a lock hole (543) for mounting the lock pin (58), and when the lock pin (58) is mounted in the lock hole (543), the lock pin is positioned in front of the intermediate member (53) and abuts against the front side of the intermediate member (53).

9. The angle adjustment mechanism of claim 8, wherein: the front side of the intermediate piece (53) has an arc-shaped groove D (533) adapted to the locking pin (58).

10. The angle adapting mechanism according to any one of claims 1 to 3, wherein: the lower part of the connecting rod (52) is of an arc-shaped structure.

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