Hand pulling device for drawer

Abstract

The utility model discloses a hand pulling device for a drawer. The hand pulling device comprises a positioning plate and a positioning display structure, the positioning plate is suitable for being installed on a layer partition plate, and a display guide groove is formed in the positioning plate in the drawing direction of the drawer; the positioning display structure comprises a mounting plate, a transmission assembly and a display board, the mounting plate is suitable for being connected with a drawer bottom plate, and a first guide groove corresponding to the display guide groove is formed in the mounting plate; the transmission assembly is connected with the mounting plate, the display board is mounted at the moving end, close to the drawer front plate, of the transmission assembly, and the sliding end, away from the moving end, of the transmission assembly penetrates through the first guide groove and is inserted into the display guide groove. When the drawer is pulled, the sliding end can slide in the display guide groove and the first guide groove so as to drive the moving end to rotate. According to the structure, the position of the mechanism can be accurately displayed, and errors are avoided. And the characters of the display board can be switched by pushing and pulling the drawer, so that time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental instruments, and particularly relates to a hand-pulling device for a drawer. Background Art

[0002] The draw-out low-voltage switchgear is widely used in power plants, substations and other occasions; the switchgear is used for power conversion, distribution and control of power distribution, motor control and lighting distribution equipment, and plays a very important role. This type of switchgear has the advantages of saving space, reliable operation, convenient installation and maintenance, good interchangeability, strong breaking capacity, and many outgoing circuits. The hand-pulling mechanism is a key component for the drawer of the draw-out low-voltage complete switchgear, and is installed on the drawer bottom plate and the cabinet body layer partition board to play a role in limiting, fixing the drawer and displaying the position of the drawer.

[0003] The current hand-pulling mechanism has a complex structure and many parts, resulting in complex assembly of the mechanism and high assembly cost. Moreover, due to the superposition of the clearances of the parts, the position locking and position display of the mechanism are not accurate enough. Summary of the Utility Model

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the defects that the current hand-pulling mechanism has a complex structure and many parts, resulting in complex assembly of the mechanism and high assembly cost, and the position display and locking of the mechanism are not accurate enough due to the superposition of the clearances of the parts.

[0005] To this end, the utility model provides a hand-pulling device for a drawer, comprising:

[0006] A positioning plate, which is suitable for being installed on the layer partition board, and the positioning plate is provided with a display guide groove along the drawing direction of the drawer;

[0007] A positioning and display structure, which comprises a mounting plate, a transmission component and a display plate. The mounting plate is suitable for being connected with the drawer bottom plate, and a first guide groove is arranged on the mounting plate corresponding to the display guide groove; the transmission component is connected with the mounting plate, the display plate is installed at the moving end of the transmission component close to the front panel of the drawer, and the sliding end of the transmission component far away from the moving end penetrates through the first guide groove and is inserted into the display guide groove;

[0008] Wherein, when the drawer is drawn, the sliding end can slide in the display guide groove and the first guide groove to drive the moving end to rotate.

[0009] Optionally, the above-mentioned transmission component comprises:

[0010] The first transmission crank arm is arranged on the side of the mounting plate away from the positioning plate; one end of the first transmission crank arm close to the first guide groove is the sliding end, and one end of the first transmission crank arm close to the front panel of the drawer is the moving end;

[0011] A rotating shaft passes through the bent position of the first transmission crank arm and is connected to the mounting plate;

[0012] A display positioning shaft is arranged at the sliding end of the first transmission crank arm. The display positioning shaft passes through the first guide groove and is inserted into the display guide groove;

[0013] When the positioning and display structure moves along the pulling direction of the drawer, the display positioning shaft slides in the display guide groove and the first guide groove.

[0014] Optionally, the above-mentioned hand-pulling device for the drawer further includes a locking structure, and the locking structure is connected to the mounting plate;

[0015] A locking groove structure is formed on the positioning plate corresponding to the locking structure;

[0016] Under the action of an external force, the locking structure can be inserted into or disengaged from the locking groove structure.

[0017] Optionally, a second guide groove is formed on the above-mentioned mounting plate;

[0018] The locking structure includes:

[0019] A push plate is arranged on the side of the mounting plate away from the positioning plate. The push plate includes a pushing part and a sliding part. The sliding part is arranged at one end of the push plate close to the second guide groove. A third guide groove is formed on the sliding part corresponding to the second guide groove, and the pushing part is arranged at one end of the push plate away from the second guide groove;

[0020] A locking pin is connected to the push plate, and the locking pin passes through the third guide groove and is inserted into the second guide groove;

[0021] Under the action of an external force, the locking pin can slide along the inner walls of the second guide groove and the third guide groove to be inserted into or disengaged from the locking groove structure.

[0022] Optionally, the above-mentioned locking groove structure includes a connecting locking surface, a first locking groove and a second locking groove. The connecting locking surface, the first locking groove and the second locking groove are sequentially arranged on the side surface of the positioning plate along the pulling direction of the drawer.

[0023] Optionally, the above positioning and display structure further includes a torsion spring. The fixed foot of the torsion spring is arranged on the mounting plate, and the torsion part of the torsion spring is connected to the rotating shaft.

[0024] Optionally, the above-mentioned drawer manual pulling device further includes: a switching structure;

[0025] The switching structure includes:

[0026] A substrate, which is arranged on one side of the mounting plate close to the front panel of the drawer. A fourth guide groove is formed on the substrate.

[0027] A second transmission crank arm, one end of which is installed on the substrate;

[0028] A locking rod, which is connected to the other end of the second transmission crank arm. A guide member is arranged on one side of the locking rod close to the substrate, and the guide member is adapted to be clamped in the fourth guide groove.

[0029] Optionally, a locking portion is provided at one end of the above-mentioned locking rod close to the push plate, and a locking groove is formed on the push plate;

[0030] The switching structure has a locking state in which the second transmission crank arm rotates to drive the locking portion on the locking rod to insert into the locking groove, and an unlocking state in which the second transmission crank arm rotates to drive the locking portion on the locking rod to disengage from the locking groove.

[0031] Optionally, the above-mentioned locking structure further includes a tension spring. One end of the tension spring is connected to the push plate, and the other end is installed on the substrate.

[0032] Optionally, a guiding guide groove is further formed on the above-mentioned positioning plate along the stretching direction of the drawer. A guiding portion is provided on the mounting plate, and the guiding portion is clamped in the guiding guide groove.

[0033] The technical solution provided by the present invention has the following advantages:

[0034] 1. The drawer manual pulling device provided by the present invention includes: a positioning plate and a positioning and display structure; the positioning plate is adapted to be installed on a layer partition board. A display guide groove is formed on the positioning plate along the pulling direction of the drawer; the positioning and display structure includes a mounting plate, a transmission component and a display board. The mounting plate is adapted to be connected to the bottom plate of the drawer. A first guide groove is formed on the mounting plate corresponding to the display guide groove; the transmission component is connected to the mounting plate. The display board is installed at the mobile end of the transmission component close to the front panel of the drawer. The sliding end of the transmission component away from the mobile end penetrates through the first guide groove and is inserted into the display guide groove; when the drawer is pulled, the sliding end can slide in the display guide groove and the first guide groove to drive the mobile end to rotate.

[0035] By setting the above structure, the connection words on the display board correspond to the connection segments on the display guide groove, the experiment words correspond to the experiment segments on the display guide groove, and the separation words indicate the separation state when the drawer is pulled out from the device. It can accurately display the position of the mechanism and avoid errors. Moreover, by pushing and pulling the drawer, the switching of the words on the display board can be realized, which saves time and effort.

[0036] 2. For the hand-pulling device for the drawer provided by the present utility model, when the display positioning shaft is at the connection segment, the locking pin can correspondingly abut against the connection locking surface. When the display positioning shaft is at the experiment segment, the locking pin can correspondingly be snapped into the first locking groove. When the display positioning shaft is in the separation state, that is, the display positioning shaft disengages from the display guide groove, the locking pin can correspondingly be snapped into the second locking groove. By using the above structure, the drawer is fixed at the corresponding working position, preventing the displacement of the drawer caused by irresistible external forces, so that the working state of the drawer does not deviate.

[0037] 3. For the hand-pulling device for the drawer provided by the present utility model, when the switching structure is in the closing state, the second transmission crank rotates to drive the locking rod to move, and the guiding member slides downward in the fourth guide groove until the locking portion is clamped in the locking groove, which can prevent the push rod from displacing under the action of external force, so that the working state of the drawer does not deviate. When it is necessary to push the push rod, an external device is inserted into the square shaft hole on the second transmission crank and rotated counterclockwise. The second transmission crank drives the locking rod to move, and the guiding member moves upward along the fourth guide groove until the guiding portion disengages from the locking groove, and the push rod can be pushed. Through the above settings, the controllability and stability of the whole device are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0039] Figure 1 It is a schematic diagram of the overall structure of the hand-pulling device for the drawer provided in the present utility model;

[0040] Figure 2 It is a side view of the hand-pulling device for the drawer provided in the present utility model;

[0041] Figure 3 It is a front view of the hand-pulling device for the drawer provided in the present utility model;

[0042] Figure 4 It is a top view of the hand-pulling device for the drawer provided in the present utility model;

[0043] Figure 5 Schematic diagram of the cooperation between the positioning and display structure and the positioning plate provided in the present utility model;

[0044] Figure 6 Top view of the positioning plate provided in the present utility model;

[0045] Figure 7 Schematic diagram of the opening and closing structure of the present utility model in the open state;

[0046] Figure 8 Schematic diagram of the opening and closing structure of the present utility model in the closed state.

[0047] Explanation of reference numerals in the drawings:

[0048] 1 - positioning plate; 11 - display guide groove; 12 - guiding guide groove; 13 - locking groove structure; 131 - connecting locking surface; 132 - first locking groove; 133 - second locking groove;

[0049] 2 - positioning and display structure; 21 - mounting plate; 211 - first guide groove; 212 - second guide groove; 22 - transmission assembly; 221 - first transmission crank arm; 222 - rotating shaft; 223 - display positioning shaft; 224 - display board; 225 - torsion spring;

[0050] 3 - locking structure; 31 - push plate; 32 - pushing part; 33 - sliding part; 34 - third guide groove; 35 - locking groove; 36 - locking pin; 37 - tension spring;

[0051] 4 - opening and closing structure; 41 - base plate; 42 - fourth guide groove; 43 - second transmission crank arm; 44 - locking rod. Detailed implementation manners

[0052] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0053] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0054] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0055] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0056] Embodiment

[0057] This embodiment provides a hand-pulling device for a drawer, as Figures 1 to 8 shown, including: a positioning plate 1, a positioning display structure 2, a locking structure 3, a locking groove structure 13, and a switching structure 4.

[0058] A plurality of mounting holes are installed on the positioning plate 1, and it can be fixed on the layer partition below the drawer by screws. Taking the top-down view as shown in Figure 4 as an example, the pulling direction of the drawer is the up-down direction. A display guide groove 11 is provided along the pulling direction of the drawer on the left side of the positioning plate 1, and a locking groove structure 13 is provided on the right side. A guiding guide groove 12 is provided between the display guide groove 11 and the locking groove structure 13. The display guide groove 11 includes a connecting section, a connecting-experiment guiding section, an experiment section, and an experiment-separation guiding section arranged in sequence from top to bottom. The experiment section is arranged on the lower left side of the connecting section, and the experiment section is communicated with the connecting section through an inclined connecting-experiment guiding section. The experiment-separation guiding section is arranged below the experiment section, and it has an inclined surface on the left side. The widths of the connecting section, the connecting-experiment guiding section, and the experiment section are the same.

[0059] As Figure 4As shown in the figure, the positioning and display structure 2 includes: a mounting plate 21, a transmission assembly 22, a torsion spring 225, and a display board 224; the transmission assembly 22 includes a first transmission crank arm 221, a rotating shaft 222, and a display positioning shaft 223; the mounting plate 21 is fixed on the upper surface of the bottom end of the drawer. An arc-shaped first guide groove 211 is provided on the mounting plate 21 corresponding to the display guide groove 11. One end of the first guide groove 211 is arranged corresponding to the connection section, and the other end is arranged corresponding to the experimental section. That is, during the movement of the mounting plate 21, one end of the first guide groove 211 can pass directly above the connection section, and the other end can pass directly above the experimental section. The rotating shaft 222 penetrates through the bent position of the first transmission crank arm 221 and rotatably fixes it on the upper surface of the mounting plate 21 away from the positioning plate 1; the display positioning shaft 223 is arranged on the sliding end of the first transmission crank arm 221, and the display positioning shaft 223 penetrates through the first guide groove 211 and the bottom plate of the drawer and is inserted into the display guide groove 11. The display board 224 is installed on the mobile end of the transmission assembly 22 close to the front panel of the drawer. The sliding end of the transmission assembly 22 away from the mobile end penetrates through the first guide groove 211 and is inserted into the display guide groove 11; the display board 224 is installed on the mobile end of the first transmission crank arm 221 close to the front panel of the drawer, that is, the end away from the display positioning shaft 223; three areas of separation, experiment, and connection are printed on the display board 224 in sequence. The fixed foot of the torsion spring 225 is arranged on the mounting plate 21, and the torsion part of the torsion spring 225 is connected to the rotating shaft 222.

[0060] When the drawer is pulled, here is an example to illustrate the working principle when the drawer is pulled out from the innermost side to the outermost side. The drawer is pulled outwards. For example, Figure 4As shown, in the initial state, the display positioning shaft 223 is clamped at the uppermost end of the display guide groove 11, and the sliding end is located at the rightmost end of the first guide groove 211. Under the lever action of the first transmission arm 221 and the rotating shaft 222, the movable end is located at the leftmost end, and the word "connection" is displayed on the outside of the drawer. As the mounting plate 21 and the positioning display structure 2 on the mounting plate 21 move downward relative to the positioning plate 1, the display positioning shaft 223 moves downward along the display guide groove 11 and slides within the inclined connection-experiment guide section, thereby driving the sliding end to rotate and deflect clockwise within the first guide groove 211. Under the lever action of the first transmission arm 221 and the rotating shaft 222, as the drawer moves, the movable end rotates counterclockwise around the rotating shaft 222 as the drawer moves, and the display board 224 also rotates accordingly until the drawer is opened, the display positioning shaft 223 is located in the experimental section, and the display board 224 displays the word "experiment". As mounting plate 21 continues to move downward, it passes through the experimental section and the experimental-separation guide section, separating from the partition. At this point, the display rotation shaft disengages from the display guide slot 11. Under the torque of torsion spring 225, the sliding end is positioned at the leftmost side of first guide slot 211. Under the leverage of first transmission arm 221 and rotation shaft 222, the moving end rotates counterclockwise until the word "Separated" appears on display sign 224. Torsion spring 225 ensures that, in the separated state, it maintains the stability of first transmission arm 221 and the display sign 224 showing "Separated," preventing any shaking that could cause deviations in the status display.

[0061] When returning from the disconnected state to the connected state, the drawer is moved upward again, and the display positioning shaft 223 moves upward along the display guide groove 11 and moves from bottom to top along the experiment-disconnection guide section, the experiment section, the connection-experiment guide section, and the connection section, thereby driving the sliding end to rotate clockwise along the first guide groove 211. Under the lever action of the first transmission arm 221 and the rotating shaft 222, the movable end and the display sign 224 switch between the words disconnected, experiment, and connected. By setting up the above structure and method, the word connected on the display sign 224 corresponds to the connection section on the display guide groove 11, and the word experiment corresponds to the experiment section on the display guide groove 11. The word disconnected indicates the disconnected state of the drawer from the device, which can accurately display the position of the mechanism and avoid errors. The words on the display sign 224 can be switched by pushing and pulling the drawer, saving time and effort.

[0062] In this embodiment, the locking structure 3 includes a push plate 31, a lock pin 36 and a tension spring 37. The push plate 31 is arranged on the upper surface of the mounting plate 21 away from the positioning plate 1. The push plate 31 includes a pushing portion 32 and a sliding portion 33. Figure 4As shown, the pushing part 32 is arranged at the lower end, and the sliding part 33 is arranged at the upper end. The pushing part 32 is a vertically placed plate, and the sliding part 33 is arranged as a horizontally placed plate. A second guide groove 212 is horizontally formed on the mounting plate 21, and a third guide groove 34 is obliquely formed on the sliding part 33 corresponding to the second guide groove 212. The locking pin 36 penetrates through the third guide groove 34 and is inserted into the second guide groove 212. At one end of the second guide groove 212 and the third guide groove 34 close to the positioning display structure 2, that is Figure 5 the left end in the figure corresponds to the locking groove structure 13. The locking groove structure 13 includes a connecting locking surface 131, a first locking groove 132 and a second locking groove 133 arranged in sequence along the drawer pulling direction. A hook is provided on the top surface of the pushing part 32. One end of the tension spring 37 is hooked on the hook, and the other end is hooked on the substrate 41.

[0063] In the initial locked state, the drawer is in the connected state. At this time, the locking pin 36 abuts against the connecting locking surface 131, and the drawer cannot be pulled. When the drawer needs to be pulled, push the push plate 31 upward. During the upward movement of the push plate 31, the locking pin 36 will move to the right along the third guide groove 34, and then will move to the right along the second guide groove 212 until it disengages from the connecting locking surface 131. At this time, the entire locking pin 36 is on the right side of the positioning plate 1, the tension spring 37 is tightened, and the drawer is in the unlocked state and can be pulled. Until the drawer moves to the appropriate position, release the thrust on the push plate 31. Under the pulling force of the tension spring 37, drive the push plate 31 to move downward. The locking pin 36 will move to the left along the third guide groove 34, and then will move to the left along the second guide groove 212 until it abuts against the connecting locking surface 131 again, or is clamped in the first locking groove 132 or the second locking groove 133. When the display positioning shaft 223 is in the connecting section, the locking pin 36 can correspondingly abut against the connecting locking surface 131. When the display positioning shaft 223 is in the experimental section, the locking pin 36 can be correspondingly clamped into the first locking groove 132; when the display positioning shaft 223 is in the separated state, that is, the display positioning shaft 223 disengages from the display guide groove 11, the locking pin 36 can be correspondingly clamped into the second locking groove 133. Using the above structure, the drawer is fixed at the corresponding working position, preventing the drawer displacement caused by irresistible external forces, and making the working state of the drawer deviate.

[0064] In this embodiment, as Figure 3 、 Figure 7 and Figure 8As shown, the closing and opening structure 4 includes a base plate 41, a second transmission crank arm 43, and a locking rod 44. The base plate 41 is vertically installed on one side of the mounting plate 21 close to the front plate. A fourth guide groove 42 is formed on the base plate 41. One end of the second transmission crank arm 43 is rotatably connected to the base plate 41. The base plate 41 and the second transmission crank arm 43 are connected by a square shaft and can rotate with this end point as the rotation center. The other end is rotatably connected to a locking rod 44. A guide member is installed on one side of the locking rod 44 close to the base plate 41, and the guide member is clamped in the fourth guide groove 42. A locking portion is extended at one end of the locking rod 44 close to the push rod, and the entire locking rod 44 is L-shaped. A locking groove 35 is formed on the push plate 31 corresponding to the locking portion. A through hole for the movement of the push rod is formed at the bottom of the base plate 41.

[0065] As Figure 8 shown, when the closing and opening structure 4 is in the closing state, the second transmission crank arm 43 rotates to drive the locking rod 44 to move, and the guide member slides downward in the fourth guide groove 42 until the locking portion is clamped in the locking groove 35, which can prevent the push rod from displacing under the action of an external force and causing deviation in the working state of the drawer. As Figure 7 shown, when it is necessary to push the push rod, an external device is inserted into the square shaft hole on the second transmission crank arm 43 and rotated counterclockwise. The second transmission crank arm 43 drives the locking rod 44 to move, and the guide member moves upward along the fourth guide groove 42 until the guide portion disengages from the locking groove 35, and the push rod can be pushed. Through the above settings, the controllability and stability of the entire device are improved.

[0066] In other implementable ways, a guide portion is provided on the bottom surface of the mounting plate 21, and the guide portion is clamped in the guiding groove 12. The guide portion can be a guide shaft. The guide shaft penetrates the bottom surface of the drawer and is received in the guiding groove 12. Under the action of an external force, the drawer can move along the guiding groove 12 to avoid shaking during the movement of the drawer and improve the stability of the entire structure.

[0067] The specific usage steps of the hand-pulling device for the drawer provided in this embodiment are as follows:

[0068] Here, taking the drawer being pulled out from the innermost side to the outermost side as an example to illustrate the working steps. Insert through an external device into the square shaft hole on the second transmission crank arm 43 and rotate counterclockwise. The second transmission crank arm 43 drives the locking rod 44 to move, and the guiding member moves upward along the fourth guide groove 42 until the guiding portion disengages from the locking groove 35, and then the push rod can be pushed. Push the push plate 31 upward. During the upward movement of the push plate 31, the locking pin 36 will move to the right along the third guide groove 34, and then move to the right along the second guide groove 212 until it disengages from the locking groove structure 13. Pull the drawer outwards, and it can be seen that the display positioning shaft 223 moves downward along the display guide groove 11. In the initial state, the display positioning shaft 223 is stuck at the uppermost end of the display guide groove 11, and the sliding end is located at the rightmost end of the first guide groove 211. Under the lever action of the first transmission crank arm 221 and the rotating shaft 222, the moving end is located at the leftmost side, and the word "connection" is displayed outside the drawer. As the mounting plate 21 and the positioning and display structure 2 on the mounting plate 21 move downward relative to the positioning plate 1, the display positioning shaft 223 moves downward along the display guide groove 11 and slides within the inclined connection - experiment guiding section, thereby driving the sliding end to rotate clockwise and shift within the first guide groove 211. Under the lever action of the first transmission crank arm 221 and the rotating shaft 222, the moving end rotates counterclockwise around the rotating shaft 222, and the display plate 224 also rotates accordingly until the drawer is in the open state. The display positioning shaft 223 is located in the experiment section, and the display plate 224 displays the word "experiment". As the mounting plate 21 continues to move downward, the mounting plate 21 passes through the experiment - separation guiding section from the experiment section and disengages from the layer partition board. At this time, the display rotating shaft disengages from the display guide groove 11. Under the torque action of the torsion spring 225, the sliding end is located at the leftmost side of the first guide groove 211. Under the lever action of the first transmission crank arm 221 and the rotating shaft 222, the moving end rotates counterclockwise until the display plate 224 displays the word "separation".

[0069] The staff selects the appropriate working state of the drawer. For example, when the drawer needs to be in the experiment state, the display positioning shaft 223 moves to the experiment section, and the display plate 224 displays the word "experiment". Release the external force on the push plate 31. Under the pulling force of the tension spring 37, drive the push plate 31 to move downward. The locking pin 36 will move to the left along the third guide groove 34, and then move to the left along the second guide groove 212. The locking pin 36 is correspondingly clamped into the first locking groove 132. The second transmission crank arm 43 rotates to drive the locking rod 44 to move, and the guiding member slides downward within the fourth guide groove 42 until the locking portion is clamped in the locking groove 35, and the switching structure 4 is in the closing state. The operation is completed.

[0070] Obviously, the above embodiments are merely examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the creation of the present utility model.

Claims

1. A hand-pulling device for a drawer, characterized in that, Comprising: A positioning plate (1), which is adapted to be installed on a layer partition board, and the positioning plate (1) is provided with a display guide groove (11) along the drawing direction of the drawer; A positioning display structure (2), which includes a mounting plate (21), a transmission assembly (22) and a display board (224). The mounting plate (21) is adapted to be connected to the bottom plate of the drawer, and a first guide groove (211) corresponding to the display guide groove (11) is provided on the mounting plate (21); the transmission assembly (22) is connected to the mounting plate (21), the display board (224) is installed at the mobile end of the transmission assembly (22) close to the front panel of the drawer, and the sliding end of the transmission assembly (22) away from the mobile end penetrates through the first guide groove (211) and is inserted into the display guide groove (11); Wherein, when the drawer is drawn, the sliding end can slide in the display guide groove (11) and the first guide groove (211) to drive the mobile end to rotate.

2. The drawer pulling device according to claim 1, characterized in that, The transmission assembly (22) includes: A first transmission crank arm (221), which is arranged on the side of the mounting plate (21) away from the positioning plate (1); one end of the first transmission crank arm (221) close to the first guide groove (211) is the sliding end, and one end of the first transmission crank arm (221) close to the front panel of the drawer is the mobile end; A rotating shaft (222), which penetrates through the bending position of the first transmission crank arm (221) and is connected to the mounting plate (21); A display positioning shaft (223), which is arranged at the sliding end of the first transmission crank arm (221), and the display positioning shaft (223) penetrates through the first guide groove (211) and is inserted into the display guide groove (11); When the positioning display structure (2) moves along the drawing direction of the drawer, the display positioning shaft (223) slides in the display guide groove (11) and the first guide groove (211).

3. The hand-pulling device for a drawer according to claim 2, characterized in that, The hand-pulling device for the drawer further includes a locking structure (3), and the locking structure (3) is connected to the mounting plate (21); A locking groove structure (13) corresponding to the locking structure (3) is provided on the positioning plate (1); Under the action of an external force, the locking structure (3) can be inserted into the locking groove structure (13) or separated from the locking groove structure (13).

4. The hand-pulling device for a drawer according to claim 3, characterized in that, A second guide groove (212) is provided on the mounting plate (21); The locking structure (3) includes: A push plate (31), which is arranged on the side of the mounting plate (21) away from the positioning plate (1). The push plate (31) includes a pushing part (32) and a sliding part (33). The sliding part (33) is arranged at one end of the push plate (31) close to the second guide groove (212), a third guide groove (34) corresponding to the second guide groove (212) is provided on the sliding part (33), and the pushing part (32) is arranged at one end of the push plate (31) away from the second guide groove (212); A locking pin (36), the locking pin (36) is connected to the push plate (31), and the locking pin (36) penetrates through the third guide groove (34) and is inserted into the second guide groove (212); Under the action of an external force, the locking pin (36) can slide along the inner walls of the second guide groove (212) and the third guide groove (34) to engage with or disengage from the locking groove structure (13).

5. The hand-pulling device for a drawer according to claim 4, characterized in that, The locking groove structure (13) includes a connecting locking surface (131), a first locking groove (132) and a second locking groove (133), and the connecting locking surface (131), the first locking groove (132) and the second locking groove (133) are sequentially arranged on the side surface of the positioning plate (1) along the drawing direction of the drawer.

6. The hand-pulling device for a drawer according to claim 5, characterized in that, The positioning and displaying structure (2) further includes a torsion spring (225), a fixed foot of the torsion spring (225) is arranged on the mounting plate (21), and a torsion part of the torsion spring (225) is connected to the rotating shaft (222).

7. The hand-pulling device for a drawer according to any one of claims 4-5, characterized in that, The drawer manual pulling device further includes a switching structure (4); The switching structure (4) includes: A substrate (41), the substrate (41) is arranged on one side of the mounting plate (21) close to the front plate of the drawer, and a fourth guide groove (42) is formed on the substrate (41); A second transmission crank arm (43), one end of the second transmission crank arm (43) is mounted on the substrate (41); A locking rod (44), the locking rod (44) is connected to the other end of the second transmission crank arm (43), a guiding member is arranged on one side of the locking rod (44) close to the substrate (41), and the guiding member is adapted to be clamped in the fourth guide groove (42).

8. The hand-pulling device for a drawer according to claim 7, characterized in that, A locking portion is provided at one end of the locking rod (44) close to the push plate (31), and a locking groove (35) is formed on the push plate (31); The switching structure (4) has a locking state in which the second transmission crank arm (43) rotates to drive the locking portion on the locking rod (44) to insert into the locking groove (35), and an unlocking state in which the second transmission crank arm (43) rotates to drive the locking portion on the locking rod (44) to disengage from the locking groove (35).

9. The hand-pulling device for a drawer according to claim 7, wherein, The locking structure (3) further includes a tension spring (37), one end of the tension spring (37) is connected to the push plate (31), and the other end is mounted on the substrate (41).

10. The hand-pulling device for a drawer according to claim 9, characterized in that, A guiding guide groove (12) is further formed on the positioning plate (1) along the stretching direction of the drawer, and a guiding portion is provided on the mounting plate (21), and the guiding portion is clamped in the guiding guide groove (12).

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