CN220544275U - Connecting device and electronic system - Google Patents

Abstract

The application provides a connecting device and an electronic system, and relates to the technical field of electronic equipment. Wherein, connecting device includes: the first connecting part comprises a first contact type communication end; the second connecting part comprises a second contact communication end which is detachably connected with the first contact communication end, so that the first connecting part is detachably connected with the second connecting part; the limiting component is arranged between the first connecting part and the second connecting part and used for limiting the position relation between the first connecting part and the second connecting part.

Description

Connecting device and electronic system

Technical Field

The application relates to the technical field of electronic equipment, in particular to a connecting device and an electronic system.

Background

The two existing circuit boards are connected in two ways, the first way is to connect in a welding way, the two circuit boards are inconvenient to detach when overhauling, the second way is to indirectly connect through a connector, namely, on the basis of using a board-to-board connector, holes are formed in the circuit boards so that the two circuit boards cannot be separated through bolt fixing, and the two circuit boards can be detached in the way, but steps of connecting or detaching the two circuit boards are complex.

Therefore, the technical problems described above need to be further solved.

Disclosure of Invention

In order to solve the technical problems, the embodiment of the application provides the following technical scheme:

a first aspect of the present application provides a connection device, comprising: the first connecting part comprises a first contact type communication end;

the second connecting part comprises a second contact communication end, and the second contact communication end is detachably connected with the first contact communication end so that the first connecting part is detachably connected with the second connecting part;

the limiting assembly is arranged between the first connecting part and the second connecting part and used for limiting the position relation between the first connecting part and the second connecting part;

when the limiting assembly is in a first state, the first connecting part and the second connecting part cannot be separated;

when the limiting assembly is in a second state, the first connecting part and the second connecting part can be separated;

the first connecting part is used for being connected with the first substrate, the first contact type communication end is electrically connected with the first substrate, the second connecting part is used for being connected with the second substrate, and the second contact type communication end is electrically connected with the second substrate.

In some modified embodiments of the present application, when the first contact communication terminal is connected to the second contact communication terminal and satisfies a first positional relationship, the limit component may be switched to the first state;

and when the first contact communication end and the second contact communication end do not meet the first position relation, the limiting assembly is in the second state.

In some variations of the present application, the spacing assembly includes: the first limiting unit and the second limiting unit;

the first limiting unit is arranged on the first connecting part, and the second limiting unit is arranged on the second connecting part;

the first limiting unit is matched with the second limiting unit to enable the limiting assembly to be in the first state or the second state.

In some modified embodiments of the present application, the first limiting unit has a clip, and the second limiting unit has a clip groove;

when the first contact communication end is connected with the second contact communication end and meets a first position relation, the clamping piece stretches into the clamping groove, and the limiting component can be switched to the first state;

when the first contact communication end and the second contact communication end do not meet the first position relation, the clamping piece does not extend into the clamping groove, and the limiting assembly is in the second state.

In some modified embodiments of the present application, the second connection portion is provided with a movable space, the clamping groove can slide in the movable space, the clamping groove is located at a first position under the condition of no external force, and the clamping groove can slide to a second position under the condition of external force;

when the clamping piece is clamped with the clamping groove and the clamping groove is located at the first position, the clamping piece and the clamping groove cannot be separated, and the limiting assembly is in the first state;

and under the condition that the clamping groove is positioned at the second position, the clamping piece and the clamping groove can be separated, and the limiting assembly is positioned in the second state.

In some variations of the present application, a reset member is coupled to the slot for providing a reset force to the slot for moving the slot toward the first position.

In some modified embodiments of the present application, the card slot further includes: the force receiving part is used for receiving the external force;

under the condition that the clamping groove is located at the first position, the force receiving part extends out of the opening of the movable space, the force receiving part is arranged towards the first direction, the direction of the second position pointing to the first position is the second direction, and the first direction is the same as the second direction.

In some variations of the present application, the clip member is provided with an angled transition structure toward one end of the clip slot, and/or,

one end of the clamping groove, which faces the clamping piece, is provided with an inclined transition structure,

the inclined transition structure is used for enabling the clamping piece and the clamping groove to be clamped more smoothly.

In some variations of the present application, a guiding structure is used to guide the first contact communication terminal to connect with the second contact communication terminal.

A second aspect of the present application provides an electronic system comprising: the first substrate is provided with a first connecting part, the first connecting part comprises a first contact type communication end, and the first contact type communication end is electrically connected with the first substrate;

the second substrate is provided with a second connecting part, the second connecting part comprises a second contact type communication end, the second contact type communication end is electrically connected with the second substrate,

the second contact communication end is detachably connected with the first contact communication end, so that the first substrate is detachably connected with the second substrate;

the limiting assembly is arranged between the first connecting part and the second connecting part and used for limiting the position relation between the first substrate and the second substrate;

when the limiting assembly is in a first state, the first substrate and the second substrate cannot be separated;

when the limiting assembly is in the second state, the first substrate and the second substrate can be separated.

Drawings

The above, as well as additional purposes, features, and advantages of exemplary embodiments of the present application will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. Several embodiments of the present application are illustrated by way of example and not by way of limitation in the figures of the accompanying drawings, in which like reference numerals refer to similar or corresponding parts and in which:

FIG. 1 is a schematic diagram of a structure disclosed in an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of an embodiment of the present application;

fig. 3 is a schematic structural view of a first limiting unit disclosed in an embodiment of the present application;

fig. 4 is a schematic structural view of a second limiting unit disclosed in an embodiment of the present application.

Reference numerals illustrate: 1. a first connection portion; 11. a first contact communication terminal; 2. a second connecting portion; 22. a second contact communication terminal; 3. a limit component; 31. a clamping piece; 32. a clamping groove; 321. a cover; 322. a tank body; 323. a slide block; 324. a U-shaped hole; 325. a force receiving part; 4. a reset member; 5. a first substrate; 6. a second substrate; a. a first direction.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs.

Example 1

Referring to fig. 1 to 4, a first embodiment of the present application proposes a connection device, which includes: the first connecting part 1, the second connecting part 2 and the limiting assembly, wherein the first connecting part 1 comprises a first contact type communication end 11; the second connection part 2 comprises a second contact communication end 22, and the second contact communication end 22 is detachably connected with the first contact communication end 11 so that the first connection part 1 is detachably connected with the second connection part 2; the limiting component 3 is arranged between the first connecting part 1 and the second connecting part 2 and is used for limiting the position relation between the first connecting part 1 and the second connecting part 2;

when the limiting assembly 3 is in the first state, the first connecting part 1 and the second connecting part 2 cannot be separated;

when the limiting assembly 3 is in the second state, the first connecting part 1 and the second connecting part 2 can be separated;

the first connection portion 1 is used for being connected with the first substrate 5, the first contact communication end 11 is electrically connected with the first substrate 5, the second connection portion 2 is used for being connected with the second substrate 6, and the second contact communication end 22 is electrically connected with the second substrate 6.

Specifically, the connection device provided in this embodiment may be used for connection and cooperation of two components, where the first connection portion 1 and the second connection portion 2 are two connection components, and connection installation of the first substrate 5 and the second substrate 6 may be achieved through connection of the first connection portion 1 and the second connection portion 2, and the first connection portion 1 and the second connection portion 2 respectively have a first contact communication end 11 and a second contact communication end 22, and the first connection portion 1 implement quick and effective installation connection and detachment through the first contact communication end 11 and the second contact communication end 22, and meanwhile, electrical connection between the first substrate 5 and the second substrate 6 may also be achieved.

The limiting component 3 has a first state and a second state which can be switched, the specific structure and the state switching mode of the limiting component 3 are described below, when the limiting component 3 is in the first state, the connection state of the first connection part 1 and the second connection part 2 can be limited, so that the first connection part 1 and the second connection part 2 cannot be separated, and the connection state of the first connection part 1 and the second connection part 2 is prevented from loosening, and the connection effect is prevented from being influenced; when the limiting assembly 3 is in the second state, the limitation on the connection state of the first connection part 1 and the second connection part 2 can be canceled, so that the first connection part 1 and the second connection part 2 can be separated or installed and connected, and the first connection part 1 and the second connection part 2 can be conveniently detached by an operator.

The first base plate 5 and the second base plate 6 can be detachably connected through the first connecting part 1 and the second connecting part 2, and electric connection can be realized after mechanical connection, so that the installation and the disassembly operations of the first base plate 5 and the second base plate 6 by workers are simplified, the first connecting part 1 and the second connecting part 2 can be installed or disassembled through the state switching of the limiting component 3, welding or rotating bolts are not needed any more, the assembly and disassembly efficiency of the first base plate 5 and the second base plate 6 is effectively improved, and the assembly production and the maintenance of electronic equipment are facilitated.

According to the above-mentioned list, this application embodiment provides a connecting device, realize the swing joint of first connecting portion 1 and second connecting portion 2 through spacing subassembly 3, so that first base plate 5 is connected with second base plate 6, first contact communication end 11 and second contact communication end 22 also can realize swing joint when first connecting portion 1 carries out swing joint with second connecting portion 2, can make first base plate 5 and second base plate 6 electricity be connected, this structural design, not only can make realize detachable effect between first base plate 5 and the second base plate 6, can also simplify the step of dismantling between first base plate 5 and the second base plate 6 when dismantling, the operation of skilled person has been made things convenient for, the condition that is inconvenient for overhauling two circuit boards when adopting first mode in the prior art has effectively been solved and can make dismantlement between two circuit boards when adopting the second mode, but the step of both when connecting or dismantling is comparatively loaded down with trivial details problem appears.

In some embodiments, referring to fig. 1 and 2, in an embodiment, when the first contact communication terminal 11 is connected to the second contact communication terminal 22 and satisfies the first positional relationship, the spacing component 3 may be switched to the first state;

when the first contact communication end 11 and the second contact communication end 22 do not satisfy the first positional relationship, the limiting assembly 3 is in the second state.

Specifically, the first contact communication end 11 and the second contact communication end 22 have two switchable positional relationships, namely a first positional relationship and a second positional relationship, when the first positional relationship is met by the first contact communication end 11 and the second contact communication end 22, the first contact communication end 11 and the second contact communication end 22 are in cross contact to realize electric connection, and the limiting component 3 is in a first state to limit the first connection part 1 and the second connection part 2, so that the first connection part 1 and the second connection part 2 are prevented from being separated, and the connection position of the first connection part 1 and the second connection part 2 is prevented from loosening, so that the electric connection is kept stable; when the first contact communication terminal 11 and the second contact communication terminal 22 satisfy the second positional relationship, the first contact communication terminal 11 and the second contact communication terminal 22 are separated, have no contact, and do not have electrical connection, and the limiting assembly 3 is in the second state, and does not limit the positions of the first connection portion 1 and the second connection portion 2, so that the first connection portion 1 and the second connection portion 2 can be connected or separated, and an operator can conveniently split or install the first contact communication terminal 11 and the second contact communication terminal 22.

In some embodiments and referring to fig. 1-4, in particular implementations, the spacing assembly 3 includes: the first limiting unit and the second limiting unit;

the first limiting unit is arranged on the first connecting part 1, and the second limiting unit is arranged on the second connecting part 2;

the first limiting unit and the second limiting unit cooperate to enable the limiting assembly 3 to be in a first state or a second state.

Specifically, the limiting assembly 3 includes: the first limiting unit and the second limiting unit are respectively connected with the first connecting part 1 and the second connecting part 2, the connection mode is not limited, the specific structures of the first limiting unit and the second limiting unit are described below, the limiting assembly 3 can be switched into a first state or a second state through the mutual matching of the first limiting unit and the second limiting unit, the connection relation between the first connecting part 1 and the second connecting part 2 can be changed, the first connecting part 1 and the second connecting part 2 can not be separated or can be separated, the state of the limiting assembly 3 can be switched rapidly and simply, and the disassembly and assembly can be conveniently carried out by operators.

In some embodiments, referring to fig. 1 to 4, in a specific implementation, the first limiting unit has a clip 31, and the second limiting unit has a clip groove 32;

when the first contact communication end 11 is connected with the second contact communication end 22 and meets the first position relationship, the clamping piece 31 stretches into the clamping groove 32, and the limiting component 3 can be switched to a first state;

when the first contact communication end 11 and the second contact communication end 22 do not satisfy the first positional relationship, the clamping member 31 does not extend into the clamping groove 32, and the limiting assembly 3 is in the second state.

Specifically, the first limiting unit and the second limiting unit are respectively provided with a clamping piece 31 and a clamping groove 32 which can be matched with each other, when the first contact communication end 11 and the second contact communication end 22 meet a first position relation, and are in contact with each other and realize electric connection, the clamping piece 31 stretches into the clamping groove 32, the first limiting unit and the second limiting unit are clamped, so that the limiting assembly 3 can be switched to a first state, the separation of the first connecting part 1 and the second connecting part 2 is limited, and the stability of the first position relation is ensured; when the first contact communication end 11 and the second contact communication end 22 do not meet the second positional relationship, the first contact communication end 11 and the second contact communication end 22 are not contacted, and electrical connection is not realized yet, and the clamping piece 31 does not extend into the clamping groove 32, so that the limiting assembly 3 can be switched to the second state, and separation or connection installation of the first connection part 1 and the second connection part 2 is not limited; through the joint cooperation of fastener 31 and draw-in groove 32, can realize the state switching of spacing subassembly 3 fast, need not use extra instrument, can realize no instrument quick assembly disassembly, make things convenient for operating personnel to dismantle, can effectively improve operating personnel's dismouting efficiency.

In some embodiments, referring to fig. 1 to fig. 4, in a specific implementation, the second connection portion 2 is provided with a movable space, the clamping groove 32 can slide in the movable space, the clamping groove 32 is located at the first position under the condition of not being subjected to external force, and the clamping groove 32 can slide to the second position under the condition of being subjected to external force;

when the clamping piece 31 is clamped with the clamping groove 32 and the clamping groove 32 is located at the first position, the clamping piece 31 and the clamping groove 32 cannot be separated, and the limiting assembly 3 is located at the first state;

when the clamping groove 32 is located at the second position, the clamping piece 31 and the clamping groove 32 can be separated, and the limiting assembly 3 is located at the second state.

Specifically, the movable space that sets up on second connecting portion 2 can include a closing cap 321 and a cell body 322, cell body 322 is offered on second connecting portion 2, the opening of cell body 322 is towards first connecting portion 1, and closing cap 321 covers the opening of holding at cell body 322, and the through-hole with fastener 31 adaptation is reserved, and draw-in groove 32 includes a slider 323, constitute the joint structure with fastener 31 adaptation by the U type hole 324 that slider 323 surface was offered, draw-in groove 32 is through the reciprocating sliding of slide rail in cell body 322, can realize draw-in groove 32 and slide in the movable space, and draw-in groove 32 can slide to two different positions, be first position and second position respectively, when fastener 31 and draw-in groove 32 joint, and draw-in groove 32 is located the first position, make stop subassembly 3 keep in first state with the draw-in groove 32 unable separation, only when fastener 32 is located the second position, fastener 31 and draw-in groove 32 split, make fastener 31 and fastener 32 split, make the subassembly switch for second position 3 can be the fastener 31 and can be guaranteed to the second position and can be the communication with the first end of joint portion 31 and communication stability, communication is realized to the second connecting portion 11 and is contacted with the second connecting portion 32, communication stability is easy to the end of communication.

In some embodiments, referring to fig. 1-3, in particular implementations, the reset member 4 is coupled to the card slot 32 for providing a reset force to the card slot 32 for moving the card slot 32 toward the first position.

Specifically, the restoring member 4 may be an elastic component, the restoring force is an elastic force generated by the elastic component, and the elastic component is respectively connected with the groove body 322 and the sliding block 323, so that an elastic force can be provided for the sliding block 323, so that the sliding block 323 can have a movement trend towards the first position, the clamping groove 32 can be always located at the first position when no external force is applied by an operator, the clamping groove 32 is prevented from being still located at the second position after the installation connection of the first connection portion 1 and the second connection portion 2 is completed, the clamping connection between the clamping member 31 and the clamping groove 32 cannot be limited, the clamping member 31 is separated from the clamping groove 32, the connection stability of the first connection portion 1 and the second connection portion 2 is affected, and even the electrical connection between the first contact communication end 11 and the second contact communication end 22 is disconnected.

In some embodiments, referring to fig. 1-3, in implementations, the card slot 32 further includes: a force receiving portion 325, the force receiving portion 325 is configured to receive an external force;

when the card slot 32 is located at the first position, the force receiving portion 325 extends from the opening of the movable space, the force receiving portion 325 is disposed towards the first direction a, the direction of the second position pointing to the first position is the second direction, and the first direction a is the same as the second direction.

Specifically, the card slot 32 further includes a force receiving portion 325, where the force receiving portion 325 may be a protrusion of the slider 323 toward the first direction a, and the external force may be a pressing force provided by an operator for the force receiving portion 325; the force receiving portion 325 can be rounded to avoid the operator from being scratched when pressed, and the force receiving portion 325 can move the clamping groove 32 to the second position until reaching the second position after being acted by external force, so that the clamping piece 31 can be clamped with the clamping groove 32.

When an operator wants to complete the assembly and disassembly of the first connecting part 1 and the second connecting part 2 through the clamping piece 31 and the clamping groove 32, the force receiving part 325 can be manually pressed to enable the clamping groove 32 to move to the second position, after the clamping is completed, the operator releases hands, the clamping groove 32 returns to the first position under the action of the reset piece 4, the clamping groove 32 and the clamping piece 31 cannot be separated, and the connection operation of the first connecting part 1 and the second connecting part 2 is completed.

In some embodiments, referring to fig. 1 to fig. 4, in a specific implementation, an inclined transition structure is disposed at an end of the clip 31 facing the clip groove 32, and/or an inclined transition structure is disposed at an end of the clip groove 32 facing the clip 31, where the inclined transition structure is used to make the clipping of the clip 31 and the clip groove 32 smoother.

Specifically, at least one or both of the clamping piece 31 and the clamping groove 32 are provided with an inclined transition structure, the inclined transition structure on the inclined clamping piece 31 can enable the edge of the clamping piece 31 to be subjected to arc treatment, the transition structure on the clamping groove 32 can be an inclined surface, the clamping piece 31 and the clamping groove 32 are in contact through the inclined transition structure, and then clamping is carried out, so that the clamping process of the clamping piece 31 and the clamping groove 32 is smoother, and an operator can disassemble and assemble the clamping piece more conveniently.

In some embodiments, referring to fig. 1-4, a guide structure is used to guide the first contact communication terminal 11 to connect with the second contact communication terminal 22.

Specifically, the guiding structure is arranged between the first connecting portion 1 and the second connecting portion 2, and can be a matching structure of a protrusion piece and a recess piece which are mutually matched and correspond to each other, the protrusion piece can be connected with the first connecting portion 1 and arranged on the side portion of the first connecting portion 1, the recess piece is arranged on the second connecting portion 2 and corresponds to the position of the protrusion piece, the size is matched, the protrusion piece is completely inserted into the recess piece in the process of connecting the first connecting portion 1 and the second connecting portion 2, the first contact type communication end 11 and the second contact type communication end 22 can be aligned without generating deflection, and the connection of the first contact type communication end 11 and the second contact type communication end 22 can be assisted and guided, so that the normal and stable electric connection is ensured.

Example two

Referring to fig. 1 to 4, a second embodiment of the present application proposes an electronic system, which includes: a first substrate 5 and a second substrate 6, the first substrate 5 being provided with a first connection portion 1, the first connection portion 1 comprising a first contact communication terminal 11, the first contact communication terminal 11 being electrically connected to the first substrate 5; the second substrate 6 is provided with a second connection part 2, the second connection part 2 comprises a second contact type communication end 22, the second contact type communication end 22 is electrically connected with the second substrate 6, and the second contact type communication end 22 is detachably connected with the first contact type communication end 11 so that the first substrate 5 is detachably connected with the second substrate 6;

a limiting component 3, which is arranged between the first connecting part 1 and the second connecting part 2 and is used for limiting the position relation between the first substrate 5 and the second substrate 6;

when the limiting component 3 is in the first state, the first substrate 5 and the second substrate 6 cannot be separated;

when the limiting assembly 3 is in the second state, the first substrate 5 and the second substrate 6 can be separated.

Specifically, the electronic system provided in this embodiment includes: the first substrate 5 and the second substrate 6, the first substrate 5 and the second substrate 6 may be two circuit boards, respectively, the first substrate 5 and the second substrate 6 are connected through the first connection part 1 and the second connection part 2, and the first connection part 1 and the second connection part 2 include: the first substrate 5 and the second substrate 6 are respectively electrically connected with the first contact communication terminal 11 and the second contact communication terminal 22, and when the first connection part 1 and the second connection part 2 are connected, the first contact communication terminal 11 and the second contact communication terminal 22 are also electrically connected, so that the first substrate 5 and the second substrate 6 are electrically connected, the connection process can be simplified, and the assembly efficiency can be improved; and the first connecting part 1 and the second connecting part 2 are detachably connected, when the limiting component 3 is in the first state, the first connecting part 1 and the second connecting part 2 can not be separated, and then the first substrate 5 and the second substrate 6 can not be separated, when the limiting component 3 is in the second state, the first connecting part 1 and the second connecting part 2 can be separated, the first substrate 5 and the second substrate 6 can be separated, the detachable connection between the first substrate 5 and the second substrate 6 can be realized, and the first substrate 5 and the second substrate 6 can be conveniently disassembled and assembled.

It should be noted that, in the description of the present specification, the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description of the present application and simplification of the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the present application; the terms "coupled," "mounted," "secured," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes or substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A connection device, comprising:

the first connecting part comprises a first contact type communication end;

the second connecting part comprises a second contact communication end, and the second contact communication end is detachably connected with the first contact communication end so that the first connecting part is detachably connected with the second connecting part;

the limiting assembly is arranged between the first connecting part and the second connecting part and used for limiting the position relation between the first connecting part and the second connecting part;

when the limiting assembly is in a first state, the first connecting part and the second connecting part cannot be separated;

when the limiting assembly is in a second state, the first connecting part and the second connecting part can be separated;

the first connecting part is used for being connected with the first substrate, the first contact type communication end is electrically connected with the first substrate, the second connecting part is used for being connected with the second substrate, and the second contact type communication end is electrically connected with the second substrate.

2. The connection device according to claim 1, wherein,

when the first contact communication end is connected with the second contact communication end and meets a first position relation, the limit component can be switched to the first state;

and when the first contact communication end and the second contact communication end do not meet the first position relation, the limiting assembly is in the second state.

3. The connection device according to claim 2, wherein,

the spacing subassembly includes: the first limiting unit and the second limiting unit;

the first limiting unit is arranged on the first connecting part, and the second limiting unit is arranged on the second connecting part;

the first limiting unit is matched with the second limiting unit to enable the limiting assembly to be in the first state or the second state.

4. A connection device according to claim 3, wherein,

the first limiting unit is provided with a clamping piece, and the second limiting unit is provided with a clamping groove;

when the first contact communication end is connected with the second contact communication end and meets a first position relation, the clamping piece stretches into the clamping groove, and the limiting component can be switched to the first state;

when the first contact communication end and the second contact communication end do not meet the first position relation, the clamping piece does not extend into the clamping groove, and the limiting assembly is in the second state.

5. The connection device according to claim 4, wherein,

the second connecting part is provided with a movable space, the clamping groove can slide in the movable space, the clamping groove is positioned at a first position under the condition of not receiving external force, and the clamping groove can slide to a second position under the condition of receiving external force;

when the clamping piece is clamped with the clamping groove and the clamping groove is located at the first position, the clamping piece and the clamping groove cannot be separated, and the limiting assembly is in the first state;

and under the condition that the clamping groove is positioned at the second position, the clamping piece and the clamping groove can be separated, and the limiting assembly is positioned in the second state.

6. The connection device of claim 5, further comprising:

and the reset piece is connected with the clamping groove and used for providing reset force for the clamping groove, and the reset force is used for enabling the clamping groove to move towards the first position.

7. The connection device according to claim 5, wherein,

the clamping groove further comprises: the force receiving part is used for receiving the external force;

under the condition that the clamping groove is located at the first position, the force receiving portion extends out of the opening of the movable space, the force receiving portion is arranged towards a first direction, and the first direction is the same as the direction pointing to the first position from the second position.

8. The connection device according to claim 4, wherein,

one end of the clamping piece, which faces the clamping groove, is provided with an inclined transition structure and/or,

one end of the clamping groove, which faces the clamping piece, is provided with an inclined transition structure,

the inclined transition structure is used for enabling the clamping piece and the clamping groove to be clamped more smoothly.

9. The connection device of claim 1, further comprising:

and the guiding structure is used for guiding the first contact type communication terminal to be connected with the second contact type communication terminal.

10. An electronic system, comprising:

the first substrate is provided with a first connecting part, the first connecting part comprises a first contact type communication end, and the first contact type communication end is electrically connected with the first substrate;

the second substrate is provided with a second connecting part, the second connecting part comprises a second contact type communication end, the second contact type communication end is electrically connected with the second substrate,

the second contact communication end is detachably connected with the first contact communication end, so that the first substrate is detachably connected with the second substrate;

the limiting assembly is arranged between the first connecting part and the second connecting part and used for limiting the position relation between the first substrate and the second substrate;

when the limiting assembly is in a first state, the first substrate and the second substrate cannot be separated;

when the limiting assembly is in the second state, the first substrate and the second substrate can be separated.