CN109561629B

CN109561629B - Terminal device

Info

Publication number: CN109561629B
Application number: CN201910022922.5A
Authority: CN
Inventors: 林志生
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2019-01-10
Filing date: 2019-01-10
Publication date: 2020-10-13
Anticipated expiration: 2039-01-10
Also published as: CN109561629A

Abstract

The present disclosure discloses a terminal device, including: the middle frame comprises a bottom plate and side walls arranged on the peripheral side of the bottom plate; the main board is accommodated in the middle frame, and an elastic structure is arranged on one side, close to the bottom plate, of the main board; the fixed knot includes: and the main body part is connected with one surface of the main board close to the bottom plate. The elastic part, by the main part deviates from the bottom plate direction extends and extends to the center orientation and buckle many times and form, will center and mainboard are kept apart, the elastic part receives the extrusion to shrink to the main part direction, makes the elastic part with center lateral wall butt for fixed mainboard. The mainboard assembly problem of cell-phone can be solved for the assembly process is convenient simple and easy, improves assembly efficiency.

Description

Terminal device

Technical Field

The present disclosure relates to the field of communications, and in particular, to a terminal device.

Background

At present, for the installation of a main board of a terminal device, two sides of the main board are often required to be connected with two side frames of a middle frame. Generally, a fixing groove for fixing the main board is formed in a side wall of the middle frame. When the main board is assembled, the main board is installed in an oblique insertion mode. Firstly, insert the mainboard slope with one side slant of mainboard in the fixed slot, then, put down the relative opposite side of mainboard, rethread equipment card holds in the palm and is connected with the mainboard cooperation, realizes the pre-fixing of center and mainboard.

However, the main board is an electronic device with high precision, and various electrical circuits are arranged on the main board. In the traditional process of installing the mainboard, when inserting the mainboard to one side in the draw-in groove of frame, take place the friction easily between mainboard and the center frame. At present, in order to enhance the anti-falling performance of the terminal equipment, the hardness of the frame of the terminal equipment is higher and higher. Therefore, the frame with high hardness easily causes the abrasion of the main board, and reduces the production yield of the terminal equipment.

Disclosure of Invention

In order to solve the problem that abrasion is easily generated in the assembly of a main board of a terminal device in the related art, the disclosure provides the terminal device.

The present disclosure provides a terminal device, including:

the middle frame comprises a bottom plate and side walls arranged on the peripheral side of the bottom plate;

the main board is accommodated in the middle frame, and an elastic structure is arranged on one side, close to the bottom plate, of the main board;

the fixed knot includes:

the main body part is connected with one surface of the mainboard, which is close to the bottom plate;

the elastic part, by the main part deviates from the bottom plate direction extends and extends to the center orientation and buckle many times and form, will center and mainboard are kept apart, the elastic part receives the extrusion back to the main part direction shrink makes the elastic part with center lateral wall butt is used for fixed mainboard.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

the utility model provides a terminal equipment, terminal equipment includes center, mainboard and fixed knot. Terminal equipment can directly push down the mainboard perpendicularly in the assembling process, and at this moment the elastic component of fixed knot contacts with the draw-in groove of center. When continuing to push down, the elastic arm of fixed knot can produce elastic deformation, leads to the elasticity portion to shrink to the mainboard direction, elasticity portion guiding arm with the contained angle that forms between the body diminishes always until satisfying the buckle that the mainboard can assemble the entering center. After the assembly is accomplished, the elastic part no longer receives the power of center draw-in groove, therefore the elastic part can rebound under elastic deformation's effect and return initial state, elastic part guide arm promptly with the contained angle that forms between the body returns original state, and after the assembly was accomplished, mainboard elastic construction had already contacted well with the center bottom plate to have for the ascending thrust of mainboard, the protruding draw-in groove block of the protruding and center of fixed knot at this time, consequently can guarantee the good assembly of mainboard.

The mainboard assembly problem of cell-phone can be solved to this openly adoption foretell terminal equipment for the assembly process is convenient simple and easy, improves assembly efficiency.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic structural diagram of a terminal device according to the present disclosure.

Fig. 2 is a sectional view showing a structure of a terminal device in the related art.

Fig. 3 is a structural sectional view of the terminal device of the present disclosure.

Fig. 4 is a schematic view of a force state of the fixing buckle of the present disclosure.

Fig. 5 is a schematic view of the nature of the retaining buckle of the present disclosure.

Fig. 6 is another schematic view of the force state of the fixing buckle of the present disclosure.

Fig. 7 is another schematic view of the nature of the retaining buckle of the present disclosure.

Fig. 8-10 are enlarged schematic views of the structure of the assembling process of the terminal device of the present disclosure.

Fig. 11 is a schematic view of a fixing buckle structure of the terminal device of the present disclosure.

Fig. 12 is a schematic partial structure diagram of a terminal device according to the present disclosure.

Fig. 13 is a schematic view of another structure of the fixing buckle of the terminal device of the present disclosure.

Fig. 14 is an expanded schematic view of a fixing buckle of the terminal device of the present disclosure.

Fig. 15 is a further expanded view of the retaining buckle of the terminal device of the present disclosure.

Detailed Description

While this disclosure may be susceptible to embodiment in different forms, there is shown in the drawings and will herein be described in detail only some specific embodiments thereof with the understanding that the present description is to be considered as an exemplification of the principles of the disclosure and is not intended to limit the disclosure to that as illustrated herein.

Thus, a feature indicated in this specification will serve to explain one of the features of one embodiment of the disclosure, and not to imply that every embodiment of the disclosure must have the stated feature. Further, it should be noted that this specification describes many features. Although some features may be combined to show a possible system design, these features may also be used in other combinations not explicitly described. Thus, the combinations illustrated are not intended to be limiting unless otherwise specified.

In the embodiments shown in the drawings, directional references (such as upper, lower, left, right, front and rear) are used to explain the structure and movement of the various elements of the disclosure not absolutely, but relatively. These descriptions are appropriate when the elements are in the positions shown in the drawings. If the description of the positions of these elements changes, the indication of these directions changes accordingly.

For further explanation of the principles and construction of the present disclosure, reference will now be made in detail to the preferred embodiments of the present disclosure, which are illustrated in the accompanying drawings.

The present disclosure provides a terminal device, as shown in fig. 1, the terminal device includes a middle frame 10 and a main board 20, and an antenna elastic sheet 40 is further disposed between the main board 20 and the middle frame 10. Different from the prior art, the antenna elastic sheet 40 is positioned at the side edge of the terminal equipment, and the arrangement structure is favorable for saving the space at the top and the bottom of the mobile phone, so that more new structures can be accommodated at the top and the bottom of the mobile phone, and meanwhile, the attractive effect is achieved. But at the same time the device with this arrangement is no longer suitable for the angled insertion as shown in fig. 2 during the assembly of the motherboard. Because in the assembling process, because the problem of production line assembly precision, the mode of inserting to one side can make the elastic antenna of antenna shell fragment 40 die at the center side wall in the assembling process, leads to mainboard 20 to fit into, causes the assembly badly, also can because the lateral wall of very easy scratch center 10 for antenna shell fragment 40 appears wearing and tearing, reduces equipment life.

Therefore, as shown in fig. 3, the terminal device provided in the present disclosure includes a fixing buckle 30 in addition to the middle frame 10 and the main board 20.

After the main board 20 is fixedly connected with the fixing buckle 30, the main board is elastically deformed after contacting the middle frame 10 through the fixing buckle 30, and is assembled into the middle frame 10. After the assembly is completed, the main board 20 is accommodated in the middle frame 10, and the fixing buckle 30 is disposed between the middle frame 10 and the main board 20 to isolate the middle frame 10 from the main board 20. Because the fixing buckle 30 has elasticity, the fixing buckle can play a certain buffering role, so that collision and scraping between the main board 20 and the middle frame 10 are avoided, the main board 20 and precision devices thereon, particularly the antenna elastic sheet 40, are protected, and meanwhile, the problem that in the inclined insertion type assembling process, the elastic antenna of the antenna elastic sheet 40 is dead against the side wall of the middle frame after contacting with the side wall of the middle frame, so that the assembling is poor is solved.

As shown in fig. 4 to 7, the holder buckle 30 includes: a main body portion 32 and an elastic portion 33. The fixing buckle 30 includes: a main body portion 32 and an elastic portion 33. Wherein the elastic portion 33 has elasticity.

When a pressure is applied to the elastic portion 33, as shown in fig. 4 and 6, the elastic portion 33 is elastically deformed to contract toward the main body portion 32, and the distance from the elastic portion 30 to the main body portion is reduced, and the width is reduced, so that it can be accommodated in the gap between the main board 20 and the middle frame 10. When the pressure is removed, as shown in fig. 5 and 7, the elastic portion 33 is restored to its original shape and its width is also restored, so that the fixing buckle cannot be easily released from the gap between the main plate 20 and the middle frame 10.

Referring to fig. 10, the middle frame 10 includes a bottom plate 11 and side walls 12 located around the bottom plate 11, and an elastic structure is disposed on one side of the main board 20 close to the bottom plate 11, where the elastic structure may be an antenna spring 40 in this embodiment. The holder buckle 30 includes a main body portion 32 and an elastic portion 33.

The main body 32 is connected to a surface of the main board 20 close to the bottom plate 11 of the middle frame 10.

The elastic portion 33 is formed by extending the main body portion 32 in a direction away from the bottom plate 11 and then bending and extending the main body portion a plurality of times in a direction toward the center frame 10.

Wherein, the side wall 12 of the middle frame 10 is provided with a fixing strip 122, and a fixing groove 121 is formed between the fixing strip 122 and the bottom plate 11.

The elastic portion 33 of the fixing buckle 30 extends from the main body portion 32 in a direction away from the bottom plate 11, then bends and extends in a direction toward the bottom plate 11 to form a bent section 333, then extends in a direction toward the middle frame side wall 12, and then extends in a direction toward the main body portion 32 and the bottom plate 11 to form a protrusion 331 and a guide arm 332.

As shown in fig. 8-10, in the assembling process, the fixing buckle 30 is first fixedly connected to the main board 20 through the main body portion 32, and then the main board 20 is directly and vertically pressed into the middle frame 10. During the pressing-in process, the fixing strip 122 of the middle frame side wall 12 first comes into contact with the guide arm 332 of the elastic portion 33. After applying pressure again, the fixing groove 121 extrudes the guiding arm 332, the guiding arm 332 is compressed to the main body portion 32 side, and generates elastic deformation, and drives the protrusion 331 to contract inwards, meanwhile, because the fixing buckle 30 is an integral structure, other parts of the elastic portion 33 are also stressed to generate elastic deformation, and contract towards the main body portion 32 side, so that the protrusion 331 also contracts inwards. Thus, the width from the protrusion 331 to the main body 32 is reduced, and when the width is reduced enough to pass through the gap between the fixing strip 122 and the main board 20, the protrusion 331 of the fixing buckle 30 slides down along the side of the fixing strip 122 until the protrusion 331 is no longer in contact with the fixing strip 122, and at this time, the protrusion 331 stretches into the fixing groove 121, and the elastic part 33 of the fixing buckle 30 is restored.

For the oblique insertion method, in the assembly process of the present embodiment, only the fixing fastener 30 contacts with the fixing strip 122 of the middle frame side wall 12 from beginning to end, and generates squeezing and scraping, and all kinds of components on the motherboard 20 do not contact with the fixing strip 122, so that all kinds of components on the motherboard are effectively protected. And only the main board 20 needs to be pressed down in the assembling process, and compared with an oblique insertion method, the fixing groove 121 of the inner side wall of the middle frame side wall 12 does not need to be aligned accurately, so that the assembling time is saved, and the assembling efficiency is improved.

After the assembly is completed, the elastic part is not pressed by the fixing groove 121 any more and is restored to its original shape. Meanwhile, the elastic structure (e.g., the antenna spring 40) connected to the motherboard 20 contacts the bottom plate 11 and elastically deforms to push the motherboard 20 upward. At this time, the protrusion 331 of the elastic portion 33 abuts against the fixing strip 122 of the side wall 12 of the middle frame 10, preventing the main board 20 from moving upwards, and the elastic structure is compressed and limited between the main board 20 and the bottom board 11. Therefore, the main board 20 will not be sprung out of the middle frame 10 by the elastic force of the elastic structure, and the main board 20 is prevented from moving freely in the cavity of the middle frame 10.

On the other hand, the bending section 333 is located between the main board 20 and the middle frame 10 after the assembly is completed, and is attached to the side surface of the fixing strip 122 of the middle frame 10, when the main board 20 moves towards the side wall 12 of the middle frame, the bending section 333 is firstly extruded, the bending section 333 is extruded to generate elastic deformation, a reaction force is given to the main board 20, the main board 20 is prevented from continuing to move towards the side wall 12 of the middle frame, the friction collision between the main board 20 and the side wall 12 of the middle frame is effectively avoided, and the main board 20 is also prevented from moving randomly in the cavity of the middle frame 10.

In one embodiment, if the elastic structure is the antenna spring 40, the antenna of the antenna spring 40 first contacts the bottom plate 11 when the assembly is completed, and then compresses with the downward movement of the main plate 20 to generate elastic deformation, so as to provide a reverse elastic force to the main plate 20 and push the main plate 20 upward. At this time, since the fixing buckle 30 is fixedly connected to the main board 20, the protrusion 331 of the elastic portion 33 abuts against the fixing strip 122 of the side wall 12 of the middle frame 10, and a downward pressure is applied to the main board 20, so that the main board 20 is fixed in the middle frame, and a good assembly can be ensured. Meanwhile, compared with the oblique insertion method, the installation process of the embodiment is direct vertical downward pressing, and transverse extrusion cannot exist between the elastic antenna of the antenna elastic sheet 40 and the side wall 12 of the middle frame 10, so that the problem of poor assembly caused by the fact that the elastic antenna of the antenna elastic sheet 40 is dead against the side wall of the middle frame after contacting with the side wall 12 of the middle frame 10 in the oblique insertion type assembly process is also solved.

The cross section of the protrusion 331 may be a protruding shape such as an angle shape, an arc shape, a quadrangle, etc., as long as the protrusion can be accommodated in the fixing groove 121 and abuts against the fixing block 122, which is not limited in this disclosure.

In one embodiment, the protrusion 331 includes a top mating surface 3311 (shown in fig. 12), the top mating surface 3311 being in abutment with the sidewall of the securing slot 121. The guide arm 332 of the resilient portion 33 is provided with a beveled surface 3321 (shown in fig. 12).

During assembly, the fixing block 122 is first brought into contact with the inclined surface 3321. After applying pressure again, the fixing block 122 presses the inclined surface 3321, the inclined surface 3321 contracts toward the fixing buckle main body part 32 after being pressed, elastic deformation is generated, meanwhile, the pressure is transmitted to other parts of the fixing buckle elastic part 33, the whole elastic part contracts toward the main body part 32, the fixing block 122 is always in contact with the inclined surface 3321 and slides along the inclined surface 3321 to press the elastic part 33 until the protrusion 331 is in contact with the side wall of the fixing block 122, and the fixing buckle is completely accommodated in the gap between the main board 20 and the middle frame.

After the assembly is completed, the top matching surface 3311 abuts against the fixing block 122 for limiting, so as to prevent the main board 20 from moving upwards, so that the elastic structure (e.g., the antenna elastic sheet 40) is compressed and limited between the main board 20 and the bottom plate 11, and at the same time, the movement of the main board 20 in the cavity of the middle frame 10 is limited, and the main board is fixed in the middle frame. Therefore, the top-fitting surface 3311 should be attached to the sidewall of the fixing groove 121 as much as possible, or the tip of the protrusion 331 is inclined upward to contact the fixing block 122, so that the protrusion 331 is pressed by the fixing block 122 and then extends toward the sidewall 12 of the middle frame, thereby further preventing the main board 20 from coming off the middle frame 10. If the tip of the protrusion 331 is inclined downward, the protrusion 331 is pressed by the sidewall of the fixing groove 121 and then contracts toward the fixing button body 32, and is elastically deformed, so that the main board 20 is separated from the middle frame 10.

As shown in fig. 11, the main body 32 has a positioning pin 321, and a positioning groove is formed on a side of the main board 20 facing the main body 32, and the positioning pin 321 is inserted into the positioning groove to position the fixing buckle 30 and the main board 20.

At least one of the positioning pins 321 may be multiple. The positioning feet 321 can be located at two sides of the body 31 of the fixing buckle 30, and connected with two sides of the body 31 of the fixing buckle 30; the main body portion 32 may be located on a surface facing the main board 20, and may be connected to a surface of the main body portion 32 facing the main board 20, which may function to position the fixing buckle 30 with the main board 20, and the disclosure is not limited herein.

In this embodiment, the two sides of the body 31 of the fixing buckle 30 are respectively provided with a positioning leg 321, which is inserted into a positioning slot formed on one side of the main board 20 facing the main body 32 to perform fixing and positioning functions. Through the mode of pegging graft, can be very conveniently with fixed knot 30 fixed connection on mainboard 20, can improve assembly efficiency, but appear connecting insecure problem easily.

In the embodiment shown in fig. 11, the main body portion 32 further includes a connecting surface 322, which is a surface of the main body portion 32 facing the main board 20 and is connected to the main board 20. After the positioning foot 321 fixes and positions the fixing buckle 30 on the main board 20, the connecting surface 322 is connected with the main board 20 in a bonding or welding mode, and due to the fixing and positioning function of the positioning foot 321, the fixing buckle 30 is not easy to loosen on the main board, so that the connecting surface 322 is connected to the main board 20 more conveniently. The connection of connecting face 322 and mainboard 20 has further strengthened the connection of fixed knot 30 and mainboard 20, owing to adopted more firm connected mode, fixed knot 30 is connected more firmly with mainboard 20, and the condition that becomes flexible and drop can not appear, also is more difficult to break away from mainboard 20 in the assembling process and after the assembly.

Referring to fig. 12, in another embodiment of the present disclosure, connecting legs 323 are disposed on two sides of the main body portion 32, and the connecting legs 323 abut against the main board 20 to support the main board 20. A connection layer 50 is present between the surface of the connection leg 323 abutting the main board 20 and the surface of the main body portion 32 facing the main board 20. After the connecting leg 323 abuts against the main board 20, the fixing buckle 30 can be conveniently fixed to the main board 20 around the connecting leg 323 due to the support.

The connecting layer 50 may be a soldering material such as soldering tin, or an adhesive material such as hot melt adhesive, and is intended to fixedly connect the main body portion 32 and the main board 20 together, i.e., to fixedly connect the fixing buckle 30 to the main board 20.

When the connection layer 50 is solder, a welding gun performs welding along the connection leg 323 during welding, and fills the solder into a cavity between the surface of the connection leg 323 abutting the main board 20 and the surface of the main body 32 facing the main board 20, thereby achieving firm welding.

When the connection layer 50 is made of hot melt adhesive, the adhesive gun bonds along the connection pins 323 during the bonding process, and fills the hot melt adhesive into the cavity between the surface of the connection pins 323 abutting against the main board 20 and the surface of the main body portion 32 facing the main board 20, thereby achieving firm bonding.

As shown in fig. 13, an end of the main body 32 away from the elastic portion 33 is bent and extended away from the main board 20 to form a bent section 325, so as to support the main body 32. The end of the return segment 325 is provided with a limit foot 341. The position-limiting leg 341 is bent back to surround the guide arm 332 of the elastic portion 33, so that the guide arm 332 of the elastic portion 33 is limited inside the position-limiting leg 341. The guide arm 332 of the elastic part 33 is provided with a convex fin 3322, and the convex fin 3322 intersects with the limiting foot 341.

In the installation process, in order to save time, the installation force cannot be accurately mastered, and if the assembly force is too large, the devices on the main board 20 are extruded after contacting the bottom board 11, so that the devices are easily damaged. A return bend 325 is added. If the dynamics during assembly is too big, mainboard 20 atress is downward, and return bend section 325 at first contacts bottom plate 11, then takes place the elastic deformation compression, constantly restricts mainboard 20 downstream, and the bigger reverse elasticity that produces of the compression degree of return bend section 325 is also bigger, has just so guaranteed under the great condition of assembly dynamics that mainboard 20 can not produce the extrusion with bottom plate 11 in the twinkling of an eye, has played the effect of buffering.

Since the guide arms 332 of the elastic portion 33 have elasticity, if no block is added to the guide arms 332, there is a high possibility that the guide arms 332 are spread due to the elasticity, so that the guide arms 332 are spread in a direction away from the main body portion 32, which causes a problem in assembly. At this point, it is also necessary to return the guide arm 332 to the normal position before assembly. Therefore, in the present embodiment, the fixing buckle 30 further includes a limiting leg 341. The position-limiting leg 341 is bent back to surround the guide arm 332 of the elastic portion 33, so that the guide arm 332 of the elastic portion 33 is limited inside the position-limiting leg 341. This limits outward extension of the guide arms 332.

Further, as shown in fig. 7, a protruding fin 3323 may be further disposed on the guide arm 332 of the elastic portion 33, such that the protruding fin 3323 intersects with the position-limiting foot 341, and when the guide arm 332 stretches towards the position-limiting foot due to elasticity, the position-limiting foot 341 contacts with the protruding fin 3323 on the guide arm 332 and generates an outward stretching resistance to the protruding fin 3323, such that the protruding fin 3323 cannot stretch outwards, and the outward stretching of the guide arm 332 is further limited.

In another embodiment of the present disclosure, as shown in fig. 14 and 15, the fixing buckle 30 is a sheet metal bent integral structure.

The metal sheet 90 is bent several times to form the main body 32 and the elastic part 33 of the fixing buckle 30, wherein two side planes 92 of the metal sheet 90 are bent into the positioning leg 321 and the connecting leg 323 of the main body 32, and the middle plane 91 is bent into the bent back section 325. The upper plane 93 and the top plane 94 are respectively bent into the connecting surface 322 of the main body portion 32, the bent section 333 of the elastic portion, the protrusion 331 and the guide arm 332.

Because the sheet metal is buckled in the integrated into one piece structure forming process, the part position of fixed knot 30 still is in compression state, so can make fixed knot 30 keep having great elasticity throughout, guarantee that fixed knot 30 easily compresses at the assembly stage, in time the reconversion after the assembly, and easily processing.

In another embodiment of the present disclosure, a side of the main plate 20 close to the fixing clip is provided with a chamfer or a fillet to prevent the fixing clip 30 from being compressed and contacted to the side of the main plate 20 and scraping edges of the main plate during installation, thereby reducing the service life of the fixing clip 30.

The above description is only for the purpose of illustrating the preferred embodiments of the present disclosure and is not to be construed as limiting the scope of the present disclosure, but rather is intended to cover all equivalent structural changes made by applying the teachings of the present disclosure to the accompanying drawings.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. A terminal device, comprising:

the middle frame comprises a bottom plate and side walls arranged on the periphery of the bottom plate, fixing strips are arranged on the side walls, and fixing grooves are formed between the fixing strips and the bottom plate;

the fixed knot includes:

the elastic part is positioned between the end part of the main board and the side wall and comprises a first bending section, a second bending section and a bulge which are sequentially connected; one end of the first bending section is connected with one side of the main body part, which is far away from the bottom plate, and the first bending section is formed by extending the main body part towards the side direction of the main board; the second bending section extends from the other end of the first bending section to the side wall of the middle frame; the bulge is formed by extending the other end of the second bending section to the direction of the fixing strip; the bulges are accommodated in the fixed groove and are abutted against the joint of the groove wall of the fixed groove and the fixed strip, so that the main board is fixed.

2. A terminal device according to claim 1, characterised in that the projection comprises a top-facing surface which abuts against a side of the fixing strip facing the base plate.

3. The terminal device according to claim 1, wherein the elastic portion of the fixing buckle further comprises a guide arm, and the guide arm is compressed and then contracted toward the main body portion, so that the elastic portion abuts against the side wall of the middle frame to fix the main board.

4. A terminal device according to claim 3, characterized in that the guide arm of the spring is provided with a ramp along which the projection slidingly presses the spring.

5. The terminal device according to claim 1, wherein the main body is provided with a positioning pin, and a positioning groove is formed on a side of the main board facing the main body, and the positioning pin is inserted into the positioning groove to position the fixing buckle with the main board.

6. The terminal device according to claim 1, wherein a surface of the main body portion facing the main board is a connection surface, and the connection surface is connected to the main board.

7. The terminal device according to claim 1, wherein the main body portion is provided with connecting legs at both sides thereof, and the connecting legs abut against the main board to support the main board.

8. The terminal device according to claim 7, wherein a connection layer is present between a surface of the connection leg abutting against the main board and a surface of the main body portion facing the main board.

9. The terminal device according to claim 1, wherein an end of the main body portion away from the elastic portion is bent and extended away from the main board to form a bent section, and the bent section supports the main body portion.

10. The terminal device according to claim 9, wherein a limiting pin is provided at the end of the bent back section, and the limiting pin is bent back to surround the guide arm of the elastic part, so that the guide arm of the elastic part is limited at the inner side of the limiting pin.

11. Terminal device according to claim 10, characterized in that the guide arms of the spring part are provided with protruding fins which intersect the stop foot.

12. The terminal device of claim 1, wherein the fixing buckle is a sheet metal bent integral structure.

13. The terminal device according to claim 1, wherein a side of the main board close to the fixing buckle is provided with a chamfer or a fillet.