Convenient locking and unlocking device for display control terminal

Abstract

The utility model provides a display control terminal convenient locking and disengaging device, which comprises a terminal body, a positioning assembly, a lock catch assembly and a fixing frame, the positioning assembly comprises a holding plate and a positioning seat, the two ends of the positioning seat are respectively provided with a positioning hole, and the two sides of the fixing frame are respectively provided with a positioning rod matched with the positioning holes; the lock catch assembly comprises a spring and a lock catch plate connected with one end of the spring, the other end of the spring is connected with the positioning seat, the lock catch plate is arranged on the side, away from the terminal body, of the positioning seat, a clamping groove is formed in the lock catch plate, and a clamping rod matched with the clamping groove is correspondingly arranged on the fixing frame; when the positioning rod passes through the positioning hole and the clamping rod is located in the clamping groove, the terminal body is locked on the fixing frame; when the clamping rod is completely separated from the clamping groove and the positioning rod is completely separated from the positioning hole, the terminal body is separated from the fixing frame. The terminal is simple in structure and convenient to operate, in-place self-locking of the terminal body on the fixing frame can be achieved, locking is firm, the terminal body can be quickly unlocked and taken out, and the application requirement that the terminal body is frequently taken down and used by a user is met.

Description

Technical Field

[0001] The utility model relates to the technical field of display and control terminal fixing, in particular to a convenient locking and releasing device for a display and control terminal. Background Art

[0002] The display and control terminal is the medium for information exchange, communication and interaction between the electromechanical system and the operator. Through the display and control terminal, the operator can set the parameters required by the electromechanical system to enable it to execute the predetermined industrial automation control program. Compared with the traditional control panel, it can reduce the number of wiring and improve the stability of the electromechanical system.

[0003] In conventional application scenarios, the display and control terminal can be used after being installed in a suitable position, and there is enough space in front of the display and control terminal for the operator to operate directly. In this case, the display and control terminal is generally firmly fixed to the corresponding installation position by fasteners. However, in some application scenarios with limited space, the display and control terminal can only be installed in a position that is inconvenient to operate directly. When the operator operates, the display and control terminal needs to be removed from the installation position for use. The display and control terminal fixed by the above fixing method usually requires auxiliary tools for disassembly, which is not convenient to disassemble and cannot meet the application requirements of frequent removal and use. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a convenient locking and releasing device for a display and control terminal, aiming to solve the problem in the prior art that when the display and control terminal is disassembled and removed from the installation position for use, auxiliary tools are usually required for disassembly, which is not convenient and cannot meet the application requirements of frequently removing the display and control device from the installation position for use.

[0005] The utility model aims to provide a convenient locking and releasing device for a display control terminal, comprising a terminal body, a positioning assembly connected to two opposite sides of the terminal body, a locking assembly connected to the positioning assembly, and a fixing frame adapted to the terminal body, wherein the positioning assembly comprises a gripping plate and a positioning seat detachably connected to the gripping plate, positioning holes are respectively provided at both ends of the positioning seat, and positioning rods adapted to the positioning holes are respectively provided on both sides of the fixing frame;

[0006] The lock assembly includes a spring and a lock plate connected to one end of the spring, the other end of the spring is connected to the positioning seat, the lock plate is arranged on the side of the positioning seat away from the terminal body, a slot is provided on the lock plate, and a card rod adapted to the slot is correspondingly provided on the fixing frame; when the positioning rod passes through the positioning hole and the card rod is located inside the card slot, the terminal body is locked on the fixing frame; when the card rod is completely separated from the card slot and the positioning rod is completely separated from the positioning hole, the terminal body is separated from the fixing frame.

[0007] The beneficial effects of the convenient locking and releasing device of the display and control terminal of the utility model are: simple structure, convenient operation, the terminal body can be self-locked in place on the fixing frame, locked firmly, and can be quickly unlocked and taken out, meeting the application needs of users who frequently take it out for use. Specifically, by setting a positioning component and a fixing frame adapted to the terminal body, the positioning component includes a holding plate and a positioning seat, a positioning hole is set on the positioning seat, and a positioning rod is correspondingly set on the fixing frame, and the fixed position of the terminal body on the fixing frame can be accurately positioned through the mutual cooperation of the positioning rod and the positioning hole; further, by setting a locking component on the positioning component, the locking component includes a spring and a locking plate, a card slot is provided on the locking plate, and a card rod is correspondingly provided on the fixing frame, and the terminal body can be firmly locked on the fixing frame through the mutual cooperation of the card rod and the card slot, and the card rod can be disengaged from the card slot to release the locked state of the terminal body on the fixing frame by simply toggling the locking plate, so as to realize the removal of the terminal body.

[0008] In addition, the convenient locking and releasing device for the display and control terminal according to the utility model may also have the following additional technical features:

[0009] Furthermore, connecting seats are respectively provided at the ends of two opposite sides in the length direction of the terminal body, and the connecting seats include a first connecting part extending horizontally outward from the side of the terminal body and a second connecting part connected to the first connecting part, and the second connecting part is provided with a connecting through hole arranged along the thickness direction of the terminal body.

[0010] Furthermore, a holding groove is provided on the holding plate at one side away from the positioning seat, and through holes are provided at both ends of the holding plate in the length direction;

[0011] The positioning seat includes an abutment portion, a fixing portion extending outward from both ends of the abutment portion in the length direction, and a positioning portion arranged on one side in the width direction of the abutment portion. The positioning portion is provided with the positioning hole, and a first bolt is passed through the through hole, the connecting through hole and the fixing portion in sequence to realize a fastened connection between the positioning assembly and the terminal body.

[0012] Furthermore, a spring installation groove for installing the spring is provided on the abutting portion, the notch of the spring installation groove is arranged in the direction of the positioning portion, and a groove wall on one side of the spring installation groove along the length direction of the abutting portion is connected to an end of the spring away from the locking plate.

[0013] Furthermore, the locking plate includes a main board portion, a push plate portion extending vertically outward from one side in the length direction of the main board portion, and a buckle plate portion extending horizontally outward from one side in the width direction of the main board portion, and limiting through holes are respectively provided on both sides in the length direction of the main board portion, and a pressure plate portion extends vertically outward on one side of the main board portion away from the push plate portion between the two limiting through holes, and a side of the pressure plate portion close to the push plate portion is connected to one end of the spring.

[0014] Furthermore, the card slot is provided between one end of the buckle plate portion away from the push plate portion and the main board portion, and one end of the buckle plate portion away from the push plate portion is inclined away from the side of the main board portion and toward the direction where the main board portion is located.

[0015] Furthermore, the locking plate is fastened to the abutment portion through a second bolt that passes through a washer, the limiting through hole and the abutment portion in sequence. When the spring is in a natural state, the second bolt is located on a side of the limiting through hole close to the push plate portion.

[0016] Furthermore, the limiting through hole is an elongated through hole, and the major axis of the elongated through hole is arranged along the length direction of the main board portion.

[0017] Further, the fixing frame includes a bottom plate portion, a supporting plate portion extending vertically outward from both sides in the length direction of the bottom plate portion, and a connecting plate portion extending vertically outward from a side of the supporting plate portion away from the bottom plate portion in a direction away from the bottom plate portion, and the positioning rods are respectively provided at both ends along the width direction of the bottom plate portion on a side of the connecting plate portion away from the bottom plate portion, and the rod body of the positioning rod is vertically arranged in a direction away from the bottom plate portion.

[0018] Furthermore, the fixing frame further comprises a mounting plate portion, and the mounting plate portion is fixedly connected to a side of the connecting plate portion located between the two positioning rods and facing away from the bottom plate portion;

[0019] The mounting plate portion is an L-shaped plate, a port of the L-shaped plate is arranged on the same side as the bottom plate portion, one side plate of the L-shaped plate is fastened to the connecting plate portion by bolts, and the other side plate of the L-shaped plate is provided with the clamping rod, and the rod body of the clamping rod is vertically arranged toward the direction close to the bottom plate portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural diagram of the terminal body in the convenient locking and releasing device of the display and control terminal of the utility model being locked in the fixed frame;

[0021] Figure 2 It is a three-dimensional structural diagram of the convenient locking and releasing device for the display and control terminal of the utility model in a state where the terminal body and the fixing frame are separated;

[0022] Figure 3 It is an exploded schematic diagram of the terminal body, the positioning component and the locking component in the convenient locking and releasing device of the display and control terminal of the utility model.

[0023] Among them, the above-mentioned drawings include the following figure marks: 1-terminal body; 11-connecting seat; 111-first connecting part; 112-second connecting part; 101-connecting through hole; 2-positioning assembly; 21-holding plate; 201-holding groove; 202-through hole; 22-positioning seat; 221-abutment part; 222-fixing part; 223-positioning part; 203-spring mounting groove; 204-positioning hole; 23-first bolt; 3-locking assembly; 31-locking plate; 311-main board part; 312-push plate part; 313-buckle plate part; 314-pressure plate part; 301-limiting through hole; 302-card slot; 32-spring; 33-second bolt; 34-washer; 4-fixing frame; 41-bottom plate part; 42-support plate part; 43-connecting plate part; 44-mounting plate part; 45-positioning rod; 46-card rod.

[0024] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] See also Figures 1 to 3The convenient locking and releasing device of the display and control terminal of the utility model comprises a terminal body 1, a positioning component 2 connected to two opposite sides of the terminal body 1, a locking component 3 connected to the positioning component 2, and a fixing frame 4 adapted to the terminal body 1, wherein the positioning component 2 is used to pre-position the installation position of the terminal body 1 on the fixing frame 4, and the locking component 3 is used to fix the terminal body 1 on the fixing frame 4.

[0029] As an example, connecting seats 11 are respectively provided at the ends of the two opposite sides in the length direction of the terminal body 1, and the connecting seats 11 are used to connect with the positioning assembly 2. Specifically, the connecting seat 11 includes a first connecting portion 111 extending horizontally outward from the side of the terminal body 1 and a second connecting portion 112 connected to the first connecting portion 111, and the second connecting portion 112 is provided with a connecting through hole 101 arranged along the thickness direction of the terminal body 1.

[0030] As an example, the positioning assembly 2 includes a holding plate 21 and a positioning seat 22 detachably connected to the holding plate 21. Specifically, a holding groove 201 is provided on the side of the holding plate 21 facing away from the positioning seat 22. The holding groove 201 is arranged along the length direction of the holding plate 21, and through holes 202 are respectively provided at both ends of the length direction of the holding plate 21. The holding groove 201 and the two through holes 202 are independently arranged. It should be noted that the design of the holding plate 21 and the holding groove 201 allows the user to hold both sides of the terminal body 1 when taking and placing the terminal body 1, which can greatly improve the user's usage experience and ensure the safety of the terminal body 1 during the taking and placing process.

[0031] Furthermore, the positioning seat 22 includes an abutting portion 221, a fixing portion 222 extending outward from both ends of the abutting portion 221 in the length direction, and a positioning portion 223 arranged on one side of the abutting portion 221 in the width direction, wherein the other side of the abutting portion 221 in the width direction is used to abut against the side of the terminal body 1 provided with the connecting seat 11, and a spring mounting groove 203 for installing the spring 32 is provided on the abutting portion 221, the spring mounting groove 203 is arranged along the length direction of the abutting portion 221, and the groove opening of the spring mounting groove 203 is arranged in the direction of the positioning portion 223, and the groove wall on one side of the spring mounting groove 203 along the length direction of the abutting portion 221 is connected to one end of the spring 32.

[0032] Furthermore, the fixing portion 222 is provided with an internal threaded hole, which is arranged along the height direction of the fixing portion 222. The positioning portion 223 is located between the abutting portion 221 and the fixing portion 222, and the positioning portion 223 is provided with a positioning hole 204. In the actual assembly process, the holding plate 21 is placed on the surface of the connecting seat 11 which is arranged on the same side as the display screen of the terminal body 1, and the first bolt 23 is sequentially passed through the through hole 202 on the holding plate 21, the connecting through hole 101 of the connecting seat 11 and the internal threaded hole on the fixing portion 222 to achieve a fastened connection between the positioning assembly 2 and the terminal body 1.

[0033] As an example, the lock assembly 3 includes a spring 32 and a lock plate 31 connected to one end of the spring 32, and the other end of the spring 32 is used to connect to the groove wall of the spring installation groove 203 on the positioning seat 22. The lock plate 31 is arranged on the side of the positioning seat 22 away from the terminal body 1. Specifically, the lock plate 31 includes a main board portion 311, a push plate portion 312 extending vertically outward from one side of the main board portion 311 in the length direction, and a pinch plate portion 313 extending horizontally outward from one side of the main board portion 311 in the width direction. The main board portion 311 is provided with limiting through holes 301 on both sides of the length direction, and a pressing plate portion 314 is vertically extended outward on the side of the main board portion 311 away from the pushing plate portion 312 between the two limiting through holes 301. In other words, the push plate portion 312 and the pressing plate portion 314 are arranged in opposite directions, and the side of the pressing plate portion 314 facing the push plate portion 312 is connected to one end of the spring 32.

[0034] Furthermore, a card slot 302 is provided between one end of the buckle plate portion 313 away from the push plate portion 312 and the main board portion 311. At the same time, the side of the buckle plate portion 313 away from the push plate portion 312 is inclined toward the direction of the main board portion 311. In other words, a slope is provided on the side of the buckle plate portion 313 away from the main board portion 311.

[0035] Furthermore, on the two sides of the abutment portion 221 of the positioning seat 22 which are arranged on the same side as the notch of the spring mounting groove 203, internal threaded columns extend outward respectively. During the actual assembly process, the entire lock assembly 3 is arranged in the lower area of ​​the holding plate 21, which does not affect the placement and overall appearance of the terminal body 1. The lock plate 31 is screwed through the washer 34 and the limiting through hole 301 with the internal threaded column on the fixing portion 222 by the second bolt 33 in sequence to achieve a fastening connection between the lock plate 31 and the abutment portion 221. At this time, the pressure plate portion 314 is located in the spring mounting groove 203, and the buckle plate portion 313 is located in the lower area of ​​the spring mounting groove 203. The position of the second bolt 33 in the limiting through hole 301 can change with the change of the position of the entire lock plate. When the spring 32 is in a natural state, the second bolt 33 is located on the side of the limiting through hole 301 close to the push plate portion 312.

[0036] Furthermore, the limiting through hole 301 is an elongated through hole, and the major axis of the elongated through hole is arranged along the length direction of the main board portion 311 .

[0037] As an example, the fixing frame 4 includes a bottom plate portion 41, a support plate portion 42 extending vertically outward from both sides of the bottom plate portion 41 in the length direction, and a connecting plate portion 43 extending vertically outward from the side of the support plate portion 42 away from the bottom plate portion 41 in the direction away from the bottom plate portion 41. Positioning rods 45 are respectively provided at both ends of the side of the connecting plate portion 43 away from the bottom plate portion 41 in the width direction of the bottom plate portion 41. The rod body of the positioning rod 45 is vertically arranged in the direction away from the bottom plate portion 41, and the positioning rod 45 is adapted to the positioning hole 204 on the positioning seat 22. It should be noted that in this embodiment, the head of the positioning rod 45 adopts a conical design, which can play a guiding role. The positioning rod 45 cooperates with the positioning hole 204 on the positioning seat 22 to realize the precise positioning of the fixed position of the terminal body 1 on the fixing frame 4.

[0038] Furthermore, a plurality of process holes are provided on the bottom plate portion 41 to realize a lightweight design of the fixing frame 4 . It should be noted that the design of the process holes on the bottom plate portion 41 should not affect the installation of the terminal body 1 on the fixing frame 4 and the supporting strength of the fixing frame 4 .

[0039] Furthermore, the fixing frame 4 further includes a mounting plate portion 44, which is fixedly connected to a side of the connecting plate portion 43 located between the two positioning rods 45 and facing away from the bottom plate portion 41, and the mounting plate portion 44 is provided with a clamping rod 46, which is adapted to the clamping groove 302 on the locking plate 31. As a specific example, in this embodiment, the mounting plate portion 44 is an L-shaped plate, and the port of the L-shaped plate is arranged on the same side as the bottom plate portion 41. Specifically, one side plate of the L-shaped plate is fastened to the connecting plate portion 43 by bolts, and the other side plate of the L-shaped plate is provided with a clamping rod 46, and the rod body of the clamping rod 46 is arranged vertically toward the direction close to the bottom plate portion 41.

[0040] In some embodiments, the fixing frame 4 may also be designed with a clamp or a bracket or other connection structure that can fix the fixing frame 4 to other equipment, so as to improve the application performance of the convenient locking and releasing device for the display and control terminal of the utility model.

[0041] In actual use, the use principle of the convenient locking and releasing device of the display and control terminal of the utility model can be:

[0042] When the terminal body 1 needs to be fixed on the fixing frame 4, hold the holding plates 21 on both sides of the terminal body 1 with both hands, align the positioning holes 204 on the positioning seat 22 with the positioning rods 45 on the fixing frame 4, and gradually bring the terminal body 1 closer to the fixing frame 4. When the inclined surface of the buckle plate portion 313 on the locking plate 31 abuts against the rod body of the clamping rod 46 on the fixing frame 4, continue to press the terminal body 1 downward in the direction of the bottom plate portion 41 of the fixing frame 4. At this time, the clamping rod 46 has a force on the inclined surface of the buckle plate portion 313 to drive the pressing plate portion 314 on the locking plate 31 to compress the spring 32. When the locking rod 46 moves along the inclined surface of the locking plate portion 313 to the area where the card slot 302 is located, the entire locking plate 31 will move in the opposite direction under the action of the rebound force of the spring 32 until the locking rod 46 abuts against the groove wall on the card slot 302 close to the push plate portion 312, thereby achieving the purpose of self-locking in place. When the locking rod 46 is limited inside the card slot 302 and the positioning rod 45 passes through the positioning hole 204, the terminal body 1 will be firmly locked on the fixing frame 4.

[0043] When the terminal body 1 needs to be removed from the fixing frame 4, the holding plates 21 on both sides of the terminal body 1 are held with both hands, and at the same time, the pushing force of the compression spring 32 is applied to the push plate portion 312 on the locking plate 31 through the index finger, so that the entire locking plate 31 overcomes the resilience of the spring 32 and moves along the index finger in the direction of the compression spring 32 until the second bolt 33 is located on the side of the limiting through hole 301 away from the push plate portion 312, and the locking plate 31 can no longer move. At this time, the locking rod 46 is completely disengaged from the locking groove 302, and the locking state of the terminal body 1 on the fixing frame 4 is released. Subsequently, the two sides of the terminal body 1 are held with both hands to move the entire terminal body 1 toward the bottom plate portion 41 away from the fixing frame 4, so that the positioning rod 45 on the fixing frame 4 is completely disengaged from the positioning hole 204 on the positioning seat 22, and finally, the terminal body 1 is separated from the fixing frame 4.

[0044] In summary, the beneficial effects of the convenient locking and releasing device of the display and control terminal of the utility model are: simple structure, convenient operation, the terminal body can be self-locked in place on the fixing frame, locked firmly, and can be quickly unlocked and taken out, meeting the application needs of users who frequently take it out for use. Specifically, by setting a positioning component and a fixing frame adapted to the terminal body, the positioning component includes a holding plate and a positioning seat, a positioning hole is set on the positioning seat, and a positioning rod is correspondingly set on the fixing frame. Through the mutual cooperation of the positioning rod and the positioning hole, the fixed position of the terminal body on the fixing frame can be accurately positioned; further, by setting a locking component on the positioning component, the locking component includes a spring and a locking plate, a card slot is provided on the locking plate, and a card rod is correspondingly provided on the fixing frame. Through the mutual cooperation of the card rod and the card slot, the terminal body can be firmly locked on the fixing frame, and the card rod only needs to be turned to disengage the card slot to release the locked state of the terminal body on the fixing frame, thereby realizing the removal of the terminal body.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the attached claims.

Claims

1. A convenient locking and releasing device for a display and control terminal, characterized in that: It includes a terminal body, a positioning assembly connected to two opposite sides of the terminal body, a locking assembly connected to the positioning assembly, and a fixing frame adapted to the terminal body, wherein the positioning assembly includes a gripping plate and a positioning seat detachably connected to the gripping plate, positioning holes are respectively provided at both ends of the positioning seat, and positioning rods adapted to the positioning holes are respectively provided on both sides of the fixing frame; The lock assembly includes a spring and a lock plate connected to one end of the spring, the other end of the spring is connected to the positioning seat, the lock plate is arranged on the side of the positioning seat away from the terminal body, a slot is provided on the lock plate, and a card rod adapted to the slot is correspondingly provided on the fixing frame; when the positioning rod passes through the positioning hole and the card rod is located inside the card slot, the terminal body is locked on the fixing frame; when the card rod is completely separated from the card slot and the positioning rod is completely separated from the positioning hole, the terminal body is separated from the fixing frame.

2. The convenient locking and releasing device for the display and control terminal according to claim 1, characterized in that: The two opposite ends of the terminal body in the length direction are respectively provided with connection seats, and the connection seats include a first connection part extending horizontally outward from the side of the terminal body and a second connection part connected to the first connection part, and the second connection part is provided with a connection through hole arranged along the thickness direction of the terminal body.

3. The convenient locking and releasing device for the display and control terminal according to claim 2, characterized in that: A holding groove is provided on one side of the holding plate away from the positioning seat, and through holes are provided at both ends of the holding plate in the length direction; The positioning seat includes an abutment portion, a fixing portion extending outward from both ends of the abutment portion in the length direction, and a positioning portion arranged on one side in the width direction of the abutment portion. The positioning portion is provided with the positioning hole, and a first bolt is passed through the through hole, the connecting through hole and the fixing portion in sequence to realize a fastened connection between the positioning assembly and the terminal body.

4. The convenient locking and releasing device for the display and control terminal according to claim 3, characterized in that: The abutment portion is provided with a spring installation groove for installing the spring, the notch of the spring installation groove is arranged in the direction of the positioning portion, and a groove wall on one side of the spring installation groove along the length direction of the abutment portion is connected to an end of the spring away from the locking plate.

5. The convenient locking and releasing device for the display and control terminal according to claim 3, characterized in that: The locking plate includes a main board portion, a push plate portion extending vertically outward from one side in the length direction of the main board portion, and a buckle plate portion extending horizontally outward from one side in the width direction of the main board portion, and limiting through holes are respectively provided on both sides in the length direction of the main board portion, and a pressure plate portion extends vertically outward on one side of the main board portion away from the push plate portion between the two limiting through holes, and a side of the pressure plate portion close to the push plate portion is connected to one end of the spring.

6. The convenient locking and releasing device for the display and control terminal according to claim 5, characterized in that: The card slot is provided between one end of the buckle plate portion away from the push plate portion and the main board portion, and one end of the buckle plate portion away from the push plate portion is tilted away from the side of the main board portion and toward the direction where the main board portion is located.

7. The convenient locking and releasing device for the display and control terminal according to claim 5, characterized in that: The locking plate is fastened to the abutment portion through a second bolt that passes through a washer and the limiting through hole in sequence. When the spring is in a natural state, the second bolt is located on a side of the limiting through hole close to the push plate portion.

8. The convenient locking and releasing device for the display and control terminal according to claim 5, characterized in that: The limiting through hole is an elongated through hole, and the major axis of the elongated through hole is arranged along the length direction of the main board portion.

9. The convenient locking and releasing device for the display and control terminal according to claim 1, characterized in that: The fixing frame includes a bottom plate portion, a supporting plate portion extending vertically outward from both sides in the length direction of the bottom plate portion, and a connecting plate portion extending vertically outward from a side of the supporting plate portion away from the bottom plate portion in a direction away from the bottom plate portion. The positioning rods are respectively provided at both ends along the width direction of the bottom plate portion on a side of the connecting plate portion away from the bottom plate portion, and the rod body of the positioning rod is vertically arranged in a direction away from the bottom plate portion.

10. The convenient locking and releasing device for the display and control terminal according to claim 9, characterized in that: The fixing frame further comprises a mounting plate portion, wherein the mounting plate portion is fixedly connected to a side of the connecting plate portion located between the two positioning rods and away from the bottom plate portion; The mounting plate portion is an L-shaped plate, a port of the L-shaped plate is arranged on the same side as the bottom plate portion, one side plate of the L-shaped plate is fastened to the connecting plate portion by bolts, and the other side plate of the L-shaped plate is provided with the clamping rod, and the rod body of the clamping rod is vertically arranged toward the direction close to the bottom plate portion.

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