CN215474487U

CN215474487U - Clamping mechanism and automobile instrument panel adopting same

Info

Publication number: CN215474487U
Application number: CN202121214277.6U
Authority: CN
Inventors: 王震; 季士祯; 王文博
Original assignee: Heilongjiang Tianyouwei Electronic Co ltd
Current assignee: Heilongjiang Tianyouwei Electronics Co ltd
Priority date: 2021-06-01
Filing date: 2021-06-01
Publication date: 2022-01-11
Anticipated expiration: 2031-06-01

Abstract

The utility model provides a clamping mechanism and an automobile instrument panel adopting the clamping mechanism, wherein the clamping mechanism comprises a first clamping structure and a second clamping structure which are matched with each other, the first clamping structure comprises a tongue piece and at least one first limiting block, the tongue piece and the at least one first limiting block are arranged side by side, and a wedge-shaped block is arranged on a first side surface of the tongue piece; the first limiting block is parallel to the tongue piece, and one surface of the first limiting block, which is opposite to the first side surface in the direction of the tongue piece, is a first limiting surface; the second clamping structure comprises a clamping frame and at least one second limiting block, the middle of the clamping frame is used for being clamped with the clamping groove of the wedge-shaped block, the second side face of the clamping frame corresponds to the first side face of the tongue piece, and the surface, opposite to the second side face, of the second limiting block is a second limiting face. The clamping mechanism can still ensure the connection stability of the clamping mechanisms in an assembly state if the tongue piece is broken.

Description

Clamping mechanism and automobile instrument panel adopting same

Technical Field

The utility model relates to the technical field of clamping, in particular to a clamping mechanism and an automobile instrument panel adopting the same.

Background

The clamping mechanism in the prior art usually adopts a matching mode of a clamping groove and a wedge-shaped block to realize clamping, the clamping groove or the wedge-shaped block is arranged on a thin tongue piece, and the tongue piece needs to deform in the clamping process of the clamping groove and the wedge-shaped block so as to ensure the clamping of the clamping groove and the wedge-shaped block; on the contrary, when dismantling latch mechanism, need the manual work to prize the tongue piece for draw-in groove and wedge separation, this sled process can lead to the deformation of tongue piece too big, and leads to the tongue piece to break off, thereby has reduced the stability that latch mechanism connects.

SUMMERY OF THE UTILITY MODEL

Based on the current situation, the utility model mainly aims to provide a clamping mechanism and an automobile instrument panel adopting the clamping mechanism, so as to solve the problem of stability of connection of the clamping mechanism after a tongue piece is broken in the conventional clamping mechanism.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

a clamping mechanism comprises a first clamping structure and a second clamping structure which are mutually matched,

the first clamping structure comprises a first fixing structure, a tongue piece and at least one first limiting block, roots of the tongue piece and the first limiting block are connected to the first fixing structure, the tongue piece and the at least one first limiting block are arranged side by side, a wedge-shaped block is arranged on a first side face of the tongue piece, and a tip of the wedge-shaped block faces to a free end of the tongue piece; the first limiting block is parallel to the tongue piece, and one surface of the first limiting block, which is opposite to the first side surface in the direction of the tongue piece, is a first limiting surface;

the second clamping structure comprises a second fixing structure, a clamping frame and at least one second limiting block, the roots of the clamping frame and the second limiting block are connected to the second fixing structure, the number of the second limiting blocks is equal to that of the first limiting blocks and corresponds to that of the first limiting blocks one by one, the middle of the clamping frame is provided with a clamping groove used for being clamped with the wedge-shaped block, the second side surface of the clamping frame corresponds to the first side surface of the tongue piece, and the surface, opposite to the second side surface, of the second limiting block is a second limiting surface;

under the assembly state, the first side of tongue piece with the laminating of the second side of card frame, the wedge with the draw-in groove cooperation, the first spacing face of first stopper with the laminating of the spacing face of second stopper.

Preferably, a first chamfer is arranged between the first limiting face of the first limiting block and the end face of the first limiting block, and a second chamfer is arranged between the second limiting face of the second limiting block and the end face of the second limiting block.

Preferably, the first limiting block and the tongue piece are spaced in a direction perpendicular to the first side surface, and in an assembled state, the second limiting block is located in the gap.

Preferably, the first fixing structure includes a first portion connected to the tongue piece and a second portion connected to the first stopper, the second portion is a plate-shaped structure, and in an assembled state, the second portion covers an end surface of the second stopper.

Preferably, first joint structure still include with the curb plate that the tongue piece flushed, the quantity of curb plate with the quantity of first stopper is equal and the one-to-one, the curb plate with corresponding first stopper is in the perpendicular to the direction of first side sets up relatively, the root of curb plate connect in the second portion.

Preferably, the edge of the back face of the second portion is provided with a reinforcing rib, one end of the reinforcing rib is connected with the first limiting face of the first limiting block, and the other end of the reinforcing rib is connected with the side plate.

Preferably, the number of the first limiting blocks of the first clamping structure is two, and the two first limiting blocks are located on two sides of the tongue piece.

Preferably, a gap is left between the side plate and the tongue piece.

Preferably, a third chamfer is arranged between the second side surface of the clamping frame and the end surface of the clamping frame.

The utility model also provides an automobile instrument panel which comprises a frame, a segment code screen, a light guide cover and the clamping mechanism, wherein the segment code screen is installed in an installation groove in the front surface of the frame, an installation opening for installing the light guide cover is formed in the position, corresponding to the installation groove, of the back surface of the frame, and the frame and the light guide cover are fixedly connected through the clamping mechanism, wherein the first clamping structure is arranged on at least two opposite side edges of the light guide cover, and the second clamping structure is arranged on the corresponding edge of the installation opening.

The utility model has the beneficial effects that:

first joint structure and second joint structure are under the assembled condition, wedge and draw-in groove cooperation, the first spacing face of first stopper and the spacing face laminating of second stopper, therefore even under the cracked condition takes place for the tongue piece, first stopper and second stopper still can be spacing in the orientation of the first side of perpendicular to, ensure the stability and the reliability of first joint structure and second joint structural connection.

Drawings

Preferred embodiments according to the present invention will be described below with reference to the accompanying drawings. In the figure:

FIG. 1 is an exploded view of a snap-fit construction according to a preferred embodiment of the present invention;

FIG. 2 is a schematic view of the first and second clamping structures in an assembled state;

FIG. 3 is an exploded view of the first clamping arrangement;

FIG. 4 is another perspective view of the first clamping arrangement;

FIG. 5 is a schematic view of the frame and light guide when assembled;

FIG. 6 is a schematic view of a light guide cover;

FIG. 7 is a schematic view of the frame and the light guide cover in a mated state;

fig. 8 is an exploded view of the dashboard of a vehicle.

In the figure:

1. a first clamping structure; 2. a second clamping structure; 3. a light guide cover; 4. clamping a frame; 5. accommodating grooves; 6. a trench wall; 7. an installation port; 8. segment code screen; 9. a circuit board; 10. a rear cover;

11. a tongue piece; 12. a wedge block; 13. a first stopper; 14. a first chamfer; 15. a first fixed structure; 16. a side plate; 17. spacing seams; 18. inserting grooves; 19. a first limiting surface; 20. a glass cover plate;

21. clamping a frame; 22. a card slot; 23. a second limiting block; 24. a second chamfer; 25. a second fixed structure; 26. a third chamfer; 27. a second limiting surface;

151. a first portion; 152. a second portion; 153. reinforcing ribs; 154. the back of the second portion.

Detailed Description

The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth in order to avoid obscuring the nature of the present invention, well-known methods, procedures, and components have not been described in detail.

Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".

In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; in the orientation descriptions "back" and "front", the side facing the driver is the front, and the side facing away from the driver is the back. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Referring to fig. 1, the present invention provides a latch mechanism comprising a first latch structure 1 and a second latch structure 2 which are engaged with each other.

The clamping mechanism in the utility model is applied to a first component and a second component which need to be clamped with each other, for example: the first part is provided with a plurality of first clamping structures 1, the second part is provided with a plurality of second clamping structures 2, and the first part and the second part are clamped through the assembly of the first clamping structures 1 and the second clamping structures 2.

Referring to fig. 1 and 3, the first clamping structure 1 includes a first fixing structure 15, a tongue 11 and at least one first stopper 13, roots of the tongue 11 and the first stopper 13 are connected to the first fixing structure 15, the tongue 11 and the at least one first stopper 13 are arranged side by side, a wedge 12 is arranged on a first side surface of the tongue 11, and a tip of the wedge 12 faces a free end of the tongue 11; the first limiting block 13 is parallel to the tongue piece 11, and a first limiting surface 19 is arranged on the first limiting block 13 opposite to the first side surface in the direction.

Referring to fig. 1, the second clamping structure 2 includes a second fixing structure 25, a clamping frame 21 and at least one second limiting block 23, roots of the clamping frame 21 and the second limiting block 23 are connected to the second fixing structure 25, the number of the second limiting blocks 23 is equal to that of the first limiting blocks 13 and corresponds to that of the first limiting blocks 13, a clamping groove 22 for clamping with the wedge-shaped block 12 is formed in the middle of the clamping frame 21, a second side surface of the clamping frame 21 corresponds to a first side surface of the tongue piece 11, and a second limiting surface 27 is formed on a surface of the second limiting block 23 opposite to the second side surface;

referring to fig. 2, in an assembled state, the first side surface of the tongue piece 11 is attached to the second side surface of the clamping frame 21, the wedge-shaped block 12 is matched with the clamping groove 22, and the first limiting surface 19 of the first limiting block 13 is attached to the second limiting surface 27 of the second limiting block 23.

Referring to fig. 5, to take this to use novel being applied to on the motormeter dish as an example, frame 4 and light guide cover 3 on the motormeter dish need be connected through the mode of joint, are provided with first joint structure 1 on two at least sides of light guide cover 3, are equipped with the installing port 7 that is used for installing light guide cover 3 on the frame 4, are equipped with second joint structure 2 on the corresponding border of installing port 7.

The light guide cover 3 is installed at the installing port 7 of the frame 4 from the back, specifically, the light guide cover 3 is installed on the frame 4 by the cooperation of the first clamping structure 1 on the light guide cover 3 and the second clamping structure 2 on the frame 4.

Specifically, the wedge-shaped block 12 on the tongue piece 11 of the first clamping structure 1 is clamped in the clamping groove 22 in the middle of the clamping frame 21, so that the clamping of the light guide cover 3 and the frame 4 is realized, and the wedge-shaped block 12 and the clamping groove 22 which are mutually clamped can limit the frame 4 and the light guide cover 3 in the up-down direction, so that the frame 4 and the light guide cover 3 cannot be separated from each other (in the up-down direction) under the non-artificial action; in addition, at least two opposite sides of the light guide cover 3 are provided with the first clamping structure 1, correspondingly, the first limiting surface 19 of the first limiting block 13 is attached to the second limiting surface 27 of the second limiting block 23, and the attaching mode of the first limiting surface 19 and the second limiting surface 27 relatively limits the movement of the light guide cover 3 relative to the frame 4 in the horizontal direction.

For the single first clamping structure 1 and the single second clamping structure 2 in the assembling state, the first side surface of the tongue piece 11 is attached to the second side surface of the clamping frame 21, so that the light guide cover 3 can be limited to move towards one side far away from the center of the light guide cover 3 in the horizontal direction relative to the frame 4; meanwhile, the first limiting surface 19 of the first limiting block 13 is attached to the second limiting surface 27 of the second limiting block 23, so that the light guide cover 3 can be limited to move towards one side of the center of the light guide cover 3 in the horizontal direction relative to the frame 4. A single cooperating first 1 and second 2 catch structure thus provides for limiting the movement of the light guide 3 in a horizontal direction relative to the frame 4.

It is easy to understand that when the frame 4 is assembled with the light guide cover 3, the tongue piece 11 needs to be elastically deformed to clamp the wedge block 12 on the tongue piece 11 in the clamping groove 22 of the clamping frame 21, and in order to ensure that the tongue piece 11 can be elastically deformed, the thickness of the tongue piece 11 is small, so the structural strength of the tongue piece 11 is low; in the normal use process of motormeter dish and the in-process of maintaining motormeter dish, can oppress tongue piece 11 for tongue piece 11 deformation volume exceeds its biggest deformation volume, thereby appear tongue piece 11 condition of taking place the fracture, at this moment, because the special structural design of first joint structure 1 and second joint structure 2, still can ensure that the position of leaded light cover 3 and frame 4 keeps unchangeable, prevent to appear not hard up condition between frame 4 and the leaded light cover 3. Under the driving state of the automobile, abnormal sound of an automobile instrument panel is prevented.

When the automobile runs on a bumpy road section, the generated force is transmitted to the light guide cover 3 through the frame 4, so that the generated force acts on the tongue piece 11 through the clamping frame 21, and if the generated force is larger than the maximum force which can be borne by the tongue piece 11, the tongue piece 11 is broken because the thickness of the tongue piece 11 is relatively limited; due to the arrangement of the first limiting block 13 and the second limiting block 23, the generated force can be transmitted to the first limiting block 13 through the second limiting block 23, so that the force acting on the tongue piece 11 can be shared, and the probability of fracture of the tongue piece 11 in the use process of the automobile instrument panel is reduced.

In addition, the thickness of first stopper 13 and the thickness of second stopper 23 all are greater than the thickness of tongue piece 11 for the structural strength of first stopper 13 and second stopper 23 all is higher than the structural strength of tongue piece 11 far away, therefore the car when going on the highway section of jolting, even under the cracked condition takes place for tongue piece 11, first stopper 13 and second stopper 23 can not appear damaging easily yet, ensure the stability of being connected between frame 4 and the light guide cover 3.

Referring to fig. 1, in a specific embodiment, a first chamfer 14 is disposed between the first limiting surface 19 of the first limiting block 13 and the end surface of the first limiting block 13, and a second chamfer 24 is disposed between the second limiting surface 27 of the second limiting block 23 and the end surface of the second limiting block 23.

First chamfer 14 and second chamfer 24's setting, when first joint structure 1 and second joint structure 2 assembled, first chamfer 14 on the first stopper 13 and second chamfer 24 on the second stopper 23 contacted in advance, continue to exert opposite force to first joint structure 1 and second joint structure 2, and receive the guide effect of first chamfer 14 and second chamfer 24, can be relatively easy realize the laminating of first spacing face 19 and second spacing face 27, the assembly degree of difficulty of first joint structure 1 with second joint structure 2 has been reduced.

In a specific embodiment, the first stopper 13 is spaced apart from the tongue 11 in a direction perpendicular to the first side, and the second stopper 23 is located within the distance in the assembled state.

Since the second stopper 23 is located within the distance, the first side surface of the tongue piece 11 and the first stopper surface 19 of the first stopper 13 are disposed opposite to each other in a direction perpendicular to the first side surface. Under the assembly state, first joint structure 1 wholly coats in second joint structure 2 from one side, and then first joint structure 1 and second joint structure 2 under the assembly state can restrict the removal in the first side direction of perpendicular to each other.

Referring to fig. 3, in a specific embodiment, the first fixing structure 15 includes a first portion 151 connected to the tongue 11 and a second portion 152 connected to the first stopper 13, the second portion 152 is a plate-shaped structure, and in an assembled state, the second portion 152 covers an end surface of the second stopper 23.

The first portion 151 of the first fixing structure 15 is connected to the tongue 11, and the second portion 152 is connected to the first stopper 13, so that the first latch structure 1 forms a whole. Under the assembled state, the terminal surface of second stopper 23 receives the injeciton of second part 152 for unable continuation relative motion between first joint structure 1 and the second joint structure 2 plays certain limiting displacement between first joint structure 1 and the second joint structure 2.

Referring to fig. 1 and 3, in a specific embodiment, the first clamping structure 1 further includes side plates 16 flush with the tongue plate 11, the number of the side plates 16 is equal to and corresponds to the number of the first stoppers 13, the side plates 16 are opposite to the corresponding first stoppers 13 in a direction perpendicular to the first side surface, and a root of each side plate 16 is connected to the second portion 152.

The side plate 16 is flush with the tongue piece 11, that is, two side surfaces of the side plate 16 respectively correspond to two side surfaces of the tongue piece 11 one by one, and the corresponding side surface of the side plate 16 and the side surface of the tongue piece 11 are on the same plane.

Referring to fig. 1 and 2, the side plate 16, the first stopper 13 and the second portion 152 form an insertion groove 18, and the second stopper 23 is inserted into the insertion groove 18 in an assembled state. Use frame 4 and light guide cover 3 on the motormeter dish to need to pass through first joint structure 1 and second joint structure 2 as an example, because motormeter dish installs and uses on the car, when the car is gone on the highway section of jolting for a long time, can drive motormeter dish and take place the vibration, use frame 4 as the reference thing, light guide cover 3 uses the central line of light guide cover 3 length direction to carry out rocking back and forth as the rotation axis, inserting groove 18 on the light guide cover 3 also can carry out the beat relative to second stopper 23, because second stopper 23 inserts in inserting groove 18, the beat of inserting groove 18 directly receives the influence of second stopper 23, thereby reduce the range of inserting groove 18 beat, and further, reduce the range that light guide cover 3 rocked relative to frame 4, prevent that the condition that breaks away from to appear in light guide cover 3 and frame 4.

Referring to fig. 4, in a specific embodiment, a reinforcing rib 153 is disposed at an edge of a back 154 of the second portion, and one end of the reinforcing rib 153 is connected to the first limiting surface 19 of the first limiting block 13, and the other end is connected to the side plate 16.

In the assembled state, the back surface 154 of the second portion faces the end surface of the second stopper 23.

The structural strength of the second part 152 is enhanced by the arrangement of the reinforcing ribs 153, the connection between the first limiting block 13 and the side plate 16 is enhanced, and the structural strength of the first clamping structure 1 is integrally improved.

In a specific embodiment, the number of the first limit blocks 13 of the first clamping structure 1 is two, and the two first limit blocks 13 are located on two sides of the tongue piece 11.

The number of the first limiting blocks 13 of the first clamping structure 1 is two, and correspondingly, the number of the second limiting blocks 23 of the second clamping structure 2 is also two. Two first stopper 13 cooperate with two second stopper 23 respectively under the assembled condition, when the clamping mechanism received external power, because the first stopper 13 of tongue piece 11 both sides, this power can be preferred to be acted on first stopper 13 and the second stopper 23 of mutually supporting to alleviate the power of direct action on tongue piece 11, prevented that tongue piece 11 from taking place cracked condition. Two sides of the tongue piece 11 are respectively provided with a first limiting block 13, which can play an effective protection role for the tongue piece 11.

In a particular embodiment, a gap 17 is left between the side plate 16 and the tongue 11.

Referring to fig. 6, taking an instrument panel of an automobile as an example, the middle of the light guide cover 3 forms an accommodating groove 5, and naturally, the accommodating groove 5 forms a groove wall 6, since the groove wall 6 is of a thin-walled structure, the groove wall 6 can be used as a tongue piece 11, a gap 17 is formed on the groove wall 6, and the tongue piece 11 and a side plate 16 are formed by the gap 17. The original structure of the first member (light guide cover 3) can be fully utilized by providing the gap 17.

Referring to fig. 1, in a specific embodiment, a third chamfer 26 is provided between the second side surface of the card frame 21 and the end surface of the card frame 21.

The third chamfer 26 can guide the wedge-shaped block 12 on the tongue piece 11 to be clamped in the clamping groove 22 of the clamping frame 21, so that the first clamping structure 1 and the second clamping structure 2 can be assembled conveniently.

Referring to fig. 1, 2, 5, 6, 7 and 8, in another aspect, the present invention further provides an automobile dashboard, which comprises a glass cover plate 20, a segment screen 8, a frame 4, a light guide cover 3, a circuit board 9, a rear cover 10 and the latch mechanism, wherein the segment code screen is arranged in a mounting groove on the front surface of the frame 4, a mounting opening 7 for mounting the light guide cover 3 is arranged at the position of the back surface of the frame 4 corresponding to the mounting groove, the frame 4 and the light guide cover 3 are fixedly connected through the clamping mechanism, wherein, the first clamping structure 1 is arranged on at least two opposite side edges of the light guide cover 3, be provided with on the corresponding border of installing port 7 second joint structure 2, the front of segment sign indicating number screen 8 is pasted glass apron 20, and circuit board 9 installs at the back of leaded light cover 3, and back lid 10 sets up at the back of circuit board 9 and is connected with frame 4.

The frame 4 and the light guide cover 3 are in a matched state, the wedge-shaped block 12 is matched with the clamping groove 22, connection between the frame 4 and the light guide cover 3 is achieved, meanwhile, the first limiting face 19 of the first limiting block 13 is attached to the second limiting face 27 of the second limiting block 23, therefore, the first limiting block 13 is abutted to the second limiting block 23, when the vehicle runs on a bumpy road section, force generated by collision also acts on the first limiting block 13 and the second limiting block 23, and therefore force acting on the tongue piece 11 can be reduced. Even under the condition that individual tongue piece 11 breaks, first stopper 13 and second stopper 23 still can guarantee to restrict the frame 4 and the light guide cover 3 and move in the direction perpendicular to the first side face, and the reliability and the stability of being connected between frame 4 and light guide cover 3 are improved.

It will be understood that the embodiments described above are illustrative only and not restrictive, and that various obvious and equivalent modifications and substitutions for details described herein may be made by those skilled in the art without departing from the basic principles of the utility model.

Claims

1. A clamping mechanism is characterized by comprising a first clamping structure (1) and a second clamping structure (2) which are mutually matched,

the first clamping structure (1) comprises a first fixing structure (15), a tongue piece (11) and at least one first limiting block (13), roots of the tongue piece (11) and the first limiting block (13) are connected to the first fixing structure (15), the tongue piece (11) and the at least one first limiting block (13) are arranged side by side, a wedge-shaped block (12) is arranged on a first side surface of the tongue piece (11), and the tip of the wedge-shaped block (12) faces to the free end of the tongue piece (11); the first limiting block (13) is parallel to the tongue piece (11), and one surface, opposite to the first side surface, of the first limiting block (13) is a first limiting surface (19);

the second clamping structure (2) comprises a second fixing structure (25), a clamping frame (21) and at least one second limiting block (23), the roots of the clamping frame (21) and the second limiting block (23) are connected to the second fixing structure (25), the number of the second limiting blocks (23) is equal to that of the first limiting blocks (13) and corresponds to that of the first limiting blocks (13), clamping grooves (22) used for being clamped with the wedge-shaped blocks (12) are formed in the middle of the clamping frame (21), a second side face of the clamping frame (21) corresponds to a first side face of the tongue piece (11), and a second limiting face (27) is arranged on the second limiting block (23) and faces opposite to the second side face;

under the assembly condition, the first side of tongue piece (11) with the laminating of the second side of card frame (21), wedge (12) with draw-in groove (22) cooperation, the first spacing face (19) of first stopper (13) with the laminating of the spacing face (27) of second stopper (23) second.

2. The clamping mechanism according to claim 1, wherein a first chamfer (14) is provided between the first limiting surface (19) of the first limiting block (13) and the end surface of the first limiting block (13), and a second chamfer (24) is provided between the second limiting surface (27) of the second limiting block (23) and the end surface of the second limiting block (23).

3. Clamping mechanism according to claim 1, characterized in that the first stop (13) is spaced from the tongue (11) in a direction perpendicular to the first side, the second stop (23) being located in the spacing in the assembled state.

4. A clamping mechanism according to claim 3, wherein the first fixing structure (15) comprises a first portion (151) connected to the tongue (11) and a second portion (152) connected to the first stopper (13), the second portion (152) is a plate-like structure, and in the assembled state, the second portion (152) covers an end surface of the second stopper (23).

5. Clamping mechanism according to claim 4, wherein the first clamping structure (1) further comprises side plates (16) which are flush with the tongue (11), the number of the side plates (16) is equal to the number of the first stop blocks (13) and corresponds to one another, the side plates (16) and the corresponding first stop blocks (13) are arranged opposite to each other in a direction perpendicular to the first side surface, and the roots of the side plates (16) are connected to the second portion (152).

6. The clamping mechanism according to claim 5, wherein a reinforcing rib (153) is arranged at the edge of the back surface (154) of the second portion, one end of the reinforcing rib (153) is connected with the first limiting surface (19) of the first limiting block (13), and the other end of the reinforcing rib is connected with the side plate (16).

7. A clamping mechanism according to claim 5, wherein the number of the first stop blocks (13) of the first clamping structure (1) is two, and the two first stop blocks (13) are located on two sides of the tongue piece (11).

8. A clamping mechanism according to claim 7, characterised in that a spacing slot (17) is left between the side plate (16) and the tongue (11).

9. A clamping mechanism according to any one of claims 1-8, characterised in that a third chamfer (26) is provided between the second side of the clamping frame (21) and the end surface of the clamping frame (21).

10. The utility model provides an automobile instrument panel, its characterized in that, including frame (4), section sign indicating number screen (8), light guide cover (3) and according to any one of claims 1-9 latch mechanism, wherein, section sign indicating number screen (8) are installed in the positive mounting groove of frame (4), the back of frame (4) corresponds the position of mounting groove is equipped with and is used for the installation installing port (7) of light guide cover (3), frame (4) with light guide cover (3) pass through latch mechanism fixed connection, wherein, be provided with on two at least relative sides of light guide cover (3) first latch structure (1), be provided with on the border of the correspondence of installing port (7) second latch structure (2).