CN212193227U

CN212193227U - Micro-robot and non-detachable buckle structure thereof

Info

Publication number: CN212193227U
Application number: CN202020280851.7U
Authority: CN
Inventors: 单明明; 王勇; 汪永旭
Original assignee: Shenzhen Saiwenbote Intelligent Technology Co ltd
Current assignee: Shenzhen Saiwenbote Intelligent Technology Co ltd
Priority date: 2020-03-09
Filing date: 2020-03-09
Publication date: 2020-12-22
Anticipated expiration: 2030-03-09

Abstract

The utility model relates to a micro-robot and a non-detachable buckle structure thereof, wherein the non-detachable buckle structure comprises a basic part and a buckle part matched with the basic part; the buckle part comprises a first clamp arm and a second clamp arm; the tail ends of the first clamping arm and the second clamping arm protrude oppositely to form a first clamping hook and a second clamping hook respectively, the first clamping hook comprises a first clamping surface, and the second clamping hook comprises a second clamping surface; the basic part is provided with a first boss and a second boss which are respectively matched with the first clamping hook and the second clamping hook correspondingly, the first boss comprises a first boss surface which is matched with the first clamping surface and inclines downwards, and the second boss comprises a second boss surface which is matched with the second clamping surface and inclines downwards; the inclined downward inclination angle between the first boss surface and the horizontal direction is a first inclination angle, and the first inclination angle is smaller than the friction angle between the first clamping surface and the first boss surface after the first clamping surface and the first boss surface are attached. The novel fixture has the beneficial effects that the two parts are firmly combined, the production efficiency and the qualification rate are improved, and the cost is saved.

Description

Micro-robot and non-detachable buckle structure thereof

Technical Field

The utility model relates to a connection structure between the non-detachable spare part, more specifically say, relate to a non-detachable buckle structure.

Background

The buckle is used as a connection mode between non-detachable parts, and is used frequently among various parts, particularly plastic parts. Non-removable snaps are commonly used in one-time installation applications, such as product appearance trim, where the parts generally do not need to be removed for subsequent repair or removal, but at the same time require a tight fit between the parts. Most of the existing buckle structures adopt right-angle structures, namely, the buckle joint surface is approximately vertical to the movable direction of parts, and as shown in fig. 1, the joint surface R of the clamping part between two parts is horizontal; in actual production, part errors cannot be avoided, and the clamping method can cause a gap to exist between the buckle part and the base part, so that the buckle part shakes after installation, or the buckle is too tight and cannot be assembled; reducing the clearance between the parts requires significantly increased machining accuracy, resulting in increased cost and/or increased production cycle time.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to prior art's above-mentioned defect, provide a can not dismantle buckle structure.

The utility model provides a technical scheme that its technical problem adopted is: constructing a non-detachable buckle structure, wherein the non-detachable buckle structure comprises a basic part and a buckle part matched with the basic part;

the buckle part comprises a substrate, a first clamping arm and a second clamping arm, wherein the first clamping arm and the second clamping arm extend outwards along two sides of the substrate; the tail ends of the first clamping arm and the second clamping arm protrude oppositely to form a first clamping hook and a second clamping hook respectively, the first clamping hook comprises a first clamping surface, and the second clamping hook comprises a second clamping surface;

the basic part is provided with a first boss and a second boss which are respectively matched with the first clamping hook and the second clamping hook correspondingly, the first boss comprises a first boss surface which is matched with the first clamping surface and inclines downwards, and the second boss comprises a second boss surface which is matched with the second clamping surface and inclines downwards;

the inclined downward inclination angle between the first boss surface and the horizontal direction is a first inclination angle, and the first inclination angle is smaller than a friction angle between the first clamping surface and the first boss surface after the first clamping surface and the first boss surface are attached.

In some embodiments, the second boss surface has a second inclined angle with respect to the horizontal direction, and the second inclined angle is smaller than a friction angle between the second clamping surface and the second boss surface after being attached.

In some embodiments, the first tilt angle is equal to the second tilt angle.

In some embodiments, the distance from the substrate to the first clip arm bend is equal to the distance from the substrate to the second clip arm bend.

In some embodiments, the base part includes a clamping portion, the first boss and the second boss are symmetrically arranged on the clamping portion, and the clamping portion includes a mounting surface; the substrate includes an inner wall surface; after the basic part is clamped with the buckle part, the mounting surface is attached to the inner wall surface; the distance from the inner wall surface to the bending position of the first clamping arm is equal to the shortest distance from the mounting surface to the first boss.

In some embodiments, the distance from the inner wall surface to the bent part of the first clamping arm is slightly smaller than the shortest distance from the mounting surface to the first boss.

In some embodiments, the buckle part is provided with a group of second guide surfaces in an inverted splayed shape, and the clamping part is provided with a group of first guide surfaces in an inverted splayed shape corresponding to the buckle part; the second guide surfaces are respectively arranged on the first clamping hook and the second clamping hook, and the first guide surfaces are respectively arranged on two sides of the clamping portion below the first boss and the second boss.

In some embodiments, the first boss face and/or the second boss face are spaced apart or arranged continuously.

In some embodiments, the first clamping surface and/or the second clamping surface are spaced or arranged continuously.

A micro-robot comprises a mechanical arm, wherein the mechanical arm comprises the non-detachable buckle structure.

Implement the utility model discloses a non-detachable buckle structure has following beneficial effect: this kind of non-detachable buckle structure is guaranteeing buckle part and basic part joint dress back, under the relative basic part of buckle part condition of not rocking, has the error that enlarges when allowing buckle parts machining, has reduced the machining precision at the block position of buckle part to improve buckle parts's production efficiency, in order to save the cost.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

FIG. 1 is a schematic structural view of a non-removable snap feature in some embodiments of the prior art;

fig. 2 is a schematic structural view of a non-detachable snap structure in some embodiments of the present invention;

FIG. 3 is an exploded view of the non-removable snap feature shown in FIG. 2;

fig. 4 is a schematic structural view of a non-detachable buckle structure in other embodiments of the present invention.

Detailed Description

For a clearer understanding of the technical features, objects, and effects of the present invention, reference will now be made to the accompanying drawings.

It should be noted that the terms up and down indicating orientation and positional relationship are based on the positional relationship shown in the drawings and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the indicated unit or element must have a specific orientation, be constructed or operated in a specific orientation, and thus should not be construed as limiting the present invention.

Fig. 2 and 4 show a non-detachable buckle structure 1 according to some embodiments of the present invention, where the non-detachable buckle structure 1 may include a base part 10 and a buckle part 20 that is mated with the base part 10;

the basic component 10 includes a main body 12 and a clamping portion 11 protruding from the main body 12; part or all of the clamping part 11 is used for clamping into the clamping part 20, and assembly with the clamping part is achieved.

In some embodiments, the first protrusion 110 and the second protrusion 112 are respectively formed on two sides of the engaging portion 11 protruding outwards for matching with the first hook 210 and the second hook 220 of the engaging part 20. The clip portion 11 further includes a mounting surface 114, and after the base component 10 and the clip component 20 are mounted, the mounting surface 114 is configured to be coupled to an inner wall surface of the base plate 23 of the clip component 20 to form a third mating surface. Preferably, the first boss 110 and the second boss 112 are symmetrically disposed along the clamping portion 11, and have substantially the same distance from the third mating surface. It will be appreciated that the distance between the first boss 110 and the second boss 112, respectively, to the third mating surface may also be different.

The distance from the third mating surface to the main body 12 is greater than or equal to the height of the fastening part 20 in the fastening direction of the fastening part 20, so that the fastening part 20 can be smoothly installed on the fastening part 11.

In some embodiments, a set of first guiding surfaces 116, which are inward folded and approximately in a reverse-splayed shape, are respectively disposed on two sides of the clamping portion 11 below the first boss 110 and the second boss 112 for guiding the clamping part 20 to be clamped into the clamping space 200. Preferably, the set of first guiding surfaces 116 opens the clamping portion 11 under the first boss 110 and the second boss 112 in the shape of an isosceles trapezoid in cross section, so as to facilitate the clamping between the base element 10 and the clamping element 20, wherein the shorter side of the isosceles trapezoid is located on the plane of the mounting surface 114.

The first boss 110 includes a first boss surface 1101 inclined downward and engaged with the first hook 210; the second boss 112 includes a downward inclined second boss surface 1121 matched with the second hook 220; the first convex surface 1101 is inclined upward with respect to the horizontal direction by a first inclination angle α, and the second convex surface 1121 is inclined upward with respect to the horizontal direction by a second inclination angle β. Preferably, the first inclination angle α is equal to the second inclination angle β, and the first projection surface 1101 is disposed symmetrically to the second projection surface 1121.

The snap part 20 in some embodiments includes a base plate 23, and a first snap arm 21 and a second snap arm 22 extending outward along the same direction on two sides of the base plate 23; the first and

second arms

21 and 22 and the substrate 23 define a clamping space 200 for the clamping portion 11 to clamp therein. The first clip arm 21 and the second clip arm 22 are used for being clasped on two sides of the clip part 11. The distance between the inner wall surface of the first clip arm 21 and the inner wall surface of the second clip arm 22 is approximately equal to the maximum distance between the first boss 110 and the second boss 112, so that the base part 10 and the buckle part 20 are assembled together more accurately, and the probability of shaking of the buckle part 20 after assembly is reduced.

When the base component 10 and the snap component 20 are assembled, the inner wall surface 230 of the base plate 23 is engaged with the snap surface 114 to form the third engagement surface. The first and second

chucking arms

21 and 22 in some embodiments have a long plate shape and are respectively disposed at both sides of the base plate 23 in a direction substantially perpendicular to the base plate 23. The first and second clamping

arms

21 and 22 have a certain outward-opening tension to clamp the first and

second clamping platforms

110 and 112 into the clamping space 200. The shape structure of the first clamping arm 21 and the shape structure of the second clamping arm 22 can be symmetrically arranged, so that the processing is convenient, and the cost is saved. It will be understood that the shape of the first latch arm 21 and the shape of the second latch arm 22 may be asymmetric.

The first clip arm 21 and the second clip arm 22 are respectively bent oppositely to form a first hook 210 matched with the first clip stage 110 and a second hook 220 matched with the second clip stage 112; the first hook 210 includes a first clamping surface 2101 attached to the first boss section 1101, and the second hook 220 includes a second clamping surface 2201 attached to the second boss section 1121. The first clamping surface 2101 and the first boss connection surface 1101 cooperate to form a first mating surface, and the second clamping surface 2201 and the second boss surface 1121 cooperate to form a second mating surface. The maximum distance between first and

second projection surfaces

1101, 1121 corresponds to the maximum distance between first and

second clamping surfaces

2101, 2201.

An included angle between the first matching surface and the normal direction of the force acting on the buckle part 20 is a first inclination angle alpha, the alpha angle is smaller than a friction angle alpha 1 between the first matching surfaces, namely, a self-locking phenomenon is generated, and the phenomenon can enable the main part 10 and the basic part 20 to form non-detachable connection after being clamped; the self-locking phenomenon is a mechanical physical phenomenon, namely an equilibrium condition which is independent of the force magnitude and is related to the friction angle.

An included angle between the second matching surface and the normal direction of the force acting on the buckle part 20 is a second inclination angle beta, the beta angle is smaller than a friction angle beta 1 between the second matching surfaces, namely, a self-locking phenomenon is generated, and the phenomenon can enable the main part 10 and the basic part 20 to form non-detachable connection after being clamped; the self-locking phenomenon is a mechanical physical phenomenon, namely an equilibrium condition which is independent of the force magnitude and is related to the friction angle. In some embodiments, α ═ β, α 1 ═ β 1.

In some embodiments, the first hook 210 and the second hook 220 are respectively provided with a set of second guiding surfaces 2102 shaped like an inverted-eight for cooperating with the set of first guiding surfaces 116 to facilitate the assembly of the base component 10 and the fastening component.

When clamping, a group of first guide surfaces 116 on the clamping part 20 is aligned with a group of second guide surfaces 2102 on the base part 10, then a clamping force for clamping the clamping part 11 into the clamping space 200 is applied to the clamping part 20 and/or the base part 20, and under the clamping force, the first guide surfaces 116 and the second guide surfaces 2102 slide relatively, at this time, the clamping part 11 presses the first clamping arm 21 and the second clamping arm 22 outwards respectively when contacting the first clamping arm 21 and the second clamping arm 22 until the clamping part 11 is clamped into the clamping space 200. The first boss surface 1101 is matched with the first clamping surface 2101, the second boss surface 1121 is matched with the second clamping surface 2201, the mounting surface 114 is matched with the inner wall surface 230 of the substrate 23, and the non-detachable assembly between the buckle part 20 and the base part 10 is completed.

Fig. 2 shows a non-detachable snap structure in some embodiments, after the base part 10 is snapped with the snap part 20, the distance from the inner wall surface 230 of the snap part 20 to the bent portion of the first snap arm 21 is equal to the distance from the inner wall surface 230 of the snap part 20 to the second snap arm 21, and is equal to the shortest distance from the mounting surface to the first boss surface 1101. Specifically, the first mating surface and the second mating surface are in a completely fitted state, and the third mating surface is in a fitted state, that is, the first boss surface 1101 is completely fitted with the first clamping surface 2101, the second boss surface 1121 is completely fitted with the second clamping surface 2201, the mounting surface 114 is fitted with the inner wall surface 230, and the first clamping arm 21 and the second clamping arm 22 are in a natural state. The distance from the third mating surface to the bent portion of the first clamping arm 21 is equal to the shortest distance from the third mating surface to the first boss surface 1101, the distance from the third mating surface to the bent portion of the second clamping arm 22 is equal to the shortest distance from the third mating surface to the second boss surface 1121, and the distance is defined as L, at this time, the first boss surface 1101 and the second boss surface 1121 are symmetrically arranged, and the first clamping surface 2101 and the second clamping surface 2201 are symmetrically arranged.

Fig. 4 shows a non-detachable snap structure in some embodiments, after the basic part 10a is snapped with the snap part 20a, the distance from the inner wall surface 230a of the snap part 20a to the bent portion of the first snap arm 21a is equal to the distance from the inner wall surface 230a of the snap part 20a to the second snap arm 21a, and is slightly smaller than the shortest distance from the mounting surface 114a to the first boss surface 1101 a. Specifically, the first mating surface and the second mating surface are in a state of incomplete fitting, and the third mating surface is in a state of fitting, that is, the first boss surface 1101a is not completely fitted with the first clamping surface 2101a, the second boss surface 1121a is not completely fitted with the second clamping surface 2201a, the mounting surface 114a is fitted with the inner wall surface 230a, and the first clamping arm 2a1 and the second clamping arm 22a are in a slightly opened state. The distance from the third mating surface to the bent portion of the first clamping arm 21a is slightly smaller than the shortest distance from the third mating surface to the first boss surface 1101a, the bent portion from the third mating surface to the second clamping arm 22 is slightly smaller than the shortest distance from the third mating surface to the second boss surface 1121, and the distance from the third mating surface to the bent portion of the first clamping arm 21a is defined as L1, at this time, the first boss surface 1101 and the second boss surface 1121 are symmetrically arranged, and the first clamping surface 2101 and the second clamping surface 2201 are symmetrically arranged. From the above, L1 is smaller than L.

Fig. 2 shows an ideal state of the non-detachable snap structure, i.e., a state in which there is no error in actual machining of parts. But the machining error of the parts cannot be avoided in the actual production. The non-detachable buckle structure allows the dimension L to have relatively larger dimension error relative to the general machining error under the condition of ensuring that the buckle parts (20, 20a) are buckled with the basic parts (10, 10a) or the buckle parts do not shake after assembly. As shown in fig. 4, the distance from the third mating surface to the bent portion of the first clip arm 21a is L1, the size of the L1 is slightly smaller than L, the first clip arm 21a and the second clip arm 22a always keep slightly open, but due to the self-locking phenomenon of the first mating surface and the second mating surface, the clip part will not shake at this time, and is easy to assemble. Meanwhile, as the L1 is allowed to have relatively larger error and even has a certain size change range outside the error range, the requirement on the processing precision of the size L1 is reduced, the qualification rate of mass production parts is greatly improved, and the method has more economical efficiency.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and implement the present invention accordingly, which can not limit the protection scope of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention shall fall within the scope of the claims of the present invention.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.

Claims

1. A non-detachable buckle structure comprises a basic part and a buckle part matched with the basic part; it is characterized in that the preparation method is characterized in that,

the buckle part comprises a substrate, a first clamping arm and a second clamping arm, wherein the first clamping arm and the second clamping arm extend outwards along two sides of the substrate; the tail ends of the first clamping arm and the second clamping arm protrude oppositely to form a first clamping hook and a second clamping hook respectively, the first clamping hook comprises a first clamping surface which is inclined upwards, and the second clamping hook comprises a second clamping surface which is inclined upwards;

the basic part is provided with a first boss and a second boss which are correspondingly matched with the first clamping hook and the second clamping hook respectively, the first boss comprises a first boss surface which is obliquely downward and matched with the first clamping surface, and the second boss comprises a second boss surface which is obliquely downward and matched with the second clamping surface;

a first inclination angle between the first boss surface and the horizontal direction is smaller than a friction angle between the first clamping surface and the first boss surface.

2. The non-removable snap structure according to claim 1, wherein a second inclination angle between the second boss face with respect to the horizontal direction is smaller than a friction angle between the second snap surface and the second boss face.

3. The non-removable snap feature of claim 2, wherein the first angle of inclination is equal to the second angle of inclination.

4. The non-removable snap structure according to claim 3, wherein the distance from the base to the first snap arm bend is equal to the distance from the base to the second snap arm bend.

5. The non-detachable buckle structure according to claim 4, wherein the base part comprises a clamping portion, the first boss and the second boss are symmetrically arranged on the clamping portion, and the clamping portion comprises an installation surface; the substrate includes an inner wall surface; after the basic part is clamped with the buckle part, the mounting surface is attached to the inner wall surface; the distance from the inner wall surface to the bending position of the first clamping arm is equal to the shortest distance from the mounting surface to the first boss.

6. The non-detachable buckle structure of claim 5, wherein a distance from the inner wall surface to a bent portion of the first clamping arm is slightly smaller than a shortest distance from the mounting surface to the first boss.

7. The non-detachable buckle structure according to any one of claims 5 to 6, wherein the buckle part is provided with a set of second guide surfaces in an inverted-splayed shape, and the buckling portion is provided with a set of first guide surfaces in an inverted-splayed shape corresponding to the buckle part; the second guide surfaces are respectively arranged on the first clamping hook and the second clamping hook, and the first guide surfaces are respectively arranged on two sides of the clamping portion below the first boss and the second boss.

8. The non-removable snap features of claim 7, wherein the first and/or second boss surfaces are spaced apart or continuous.

9. The non-detachable buckle structure of claim 8, wherein the first and/or second buckling surfaces are spaced apart or arranged in series.

10. A micro-robot comprising a robotic arm, characterized in that the robotic arm comprises the non-detachable snap structure of any one of claims 1 to 9.