CN212985691U

CN212985691U - Lock catch structure of handle

Info

Publication number: CN212985691U
Application number: CN202021104675.8U
Authority: CN
Inventors: 曾英智
Original assignee: Hanwit Precision Industries Ltd
Current assignee: Hanwit Precision Industries Ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-04-16
Anticipated expiration: 2030-06-15

Abstract

The utility model relates to a lock catch structure of a handle, a shaft part pivoted on a machine box is arranged on the surface of the handle, a buckling part for buckling on the machine box is arranged on one side of the handle, a base of a positioning device is combined on a grab handle extending from the other side of the handle, a containing groove is arranged on one side of a perforation of the base, a limiting groove is arranged in an inward cut of an opening of the containing groove, a head part of a positioning element is accommodated in the containing groove, a limiting body limited in the limiting groove is convexly arranged on one side of the head part, a rod body penetrating through the perforation and a stop body stopped on a plate material of the machine box are extended on one side of the head part, a fixed part for positioning on the plate material is extended on the other side of the stop body, an elastic element fixed between the base and the stop body is sheathed on the rod body, when the handle is buckled on the machine box, the limiting body of the head part is separated from the limiting groove of the base, the handle can not be shaken, and the stability of locking and fixing the handle is improved.

Description

Lock catch structure of handle

Technical Field

The utility model relates to a hasp structure of handle indicates that the portion of holding is detained to detain of handle when holding on quick-witted case especially, and the spacing body of this head breaks away from outside the spacing groove to take elastic element original torsional state to produce elasticity and reset, and then makes positioning element's fixed part automatic locking solid on the machine box, so make the handle can not take place to rock, the situation of rocking, in order to promote the stability of handle lock solid.

Background

With the rapid development of electronic technology, computer technology brings people with efficient functions such as convenience, comfort, rapidness, etc. in life and work, so that the application functions of electronic technology, computer systems, etc. are increasingly strong and wider, and in addition to general personal computers, operators are centrally controlled and controlled through a central processing system, such as: industrial computer rooms, building central control systems, central control systems of automated factory building operating systems, central processing control systems of video and audio playing, etc. are all assembled inside large-scale cabinets in a stacking manner by means of centralized management, and a plurality of computer hosts, servers, operation conversion systems, etc. to form upper and lower stacked cabinets, and the cabinets can be pulled and pushed outwards from the side of the cabinets to carry out the assembly or maintenance operation of various computer operating systems, and because of combining a plurality of operating host systems, when various computer operating systems need to carry out the relevant operation such as detection, program updating, etc., the cabinets in different layers must be pulled out of the cabinets one by one to conveniently carry out the detection or the relevant maintenance operation, so that a plurality of stacked cabinets assembled inside the cabinets are all provided with simple buckling structures, the casing can be conveniently assembled in the case or pulled out from the case by the buckling structure.

However, referring to fig. 14 and 15, the currently used locking structure of the locking structure, referring to fig. 14 and 15, the movable handle a of the existing chassis is locked in the internal screw hole B11 of the cylinder B1 of the combined object B by the locking element a1, so that the movable handle a rotates and swings by using the cylinder B1 of the combined object B, and the locking purpose is achieved by the locking element a2 on the movable handle a, but the handle a still has many inconveniences and disadvantages in the practical assembly application, such as: after the movable handle a is pushed to the fixed position and is buckled and fixed by the buckling piece a2, the movable handle a cannot be fixed, and is easily loosened by a slight external force to cause the buckling piece a2 to be unbuckled, which causes inconvenience in use.

Therefore, how to solve the above-mentioned problems and deficiencies is a direction in which relevant manufacturers in the industry need to research and improve.

SUMMERY OF THE UTILITY MODEL

Therefore, in view of the above-mentioned shortcomings, the present invention provides a novel patentee who designs the lock structure of the handle by collecting relevant data and evaluating and considering in many ways.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides a hasp structure of handle which characterized in that includes handle and positioner, wherein:

the surface of the handle is provided with a shaft part pivoted on the preset case, one side of the handle is provided with a buckling part for buckling and holding the preset case, and the other side of the handle is extended with a grab handle;

the positioning device comprises a base combined on a handle, wherein through holes are arranged on the front side and the rear side of the base in a penetrating way, a containing groove with the outer diameter larger than the aperture of the through holes is concavely arranged on one side of each through hole, a limiting groove is inwards cut at the opening of the containing groove, a head part of a positioning element is contained in the containing groove, a limiting body movably limited in the limiting groove is convexly arranged on one side surface of the head part, a rod body with one end penetrating through the through holes is extended on one side of the head part, a stop body with one side blocked on a plate of a preset case is arranged on the other end of the rod body, a fixed part positioned on the preset plate is extended on the other side of the stop body, an elastic element is sleeved on the rod body, the elastic element is provided with a base part, positioning parts fixed on the base and the stop body are arranged on the two ends of the base part, when a buckling part of a handle is not buckled, the base of the elastic element is in a twisted state and is not in an elastic compression state, when the buckling part of the handle is buckled on the preset case, the fixing part of the positioning element is positioned on the preset plate, and the limiting body of the head is separated from the limiting groove of the base, so that the base of the elastic element is in the untwisted state and is in the elastic compression state.

The hasp structure of handle, wherein: the shaft portion of the handle has a shaft hole penetrating in the longitudinal direction.

The hasp structure of handle, wherein: one side of the buckling part of the handle is provided with a buckling groove.

The hasp structure of handle, wherein: the handle surface of the handle is provided with a longitudinally-through combination hole, the side edge of the base of the positioning device is provided with a butt joint part combined with the handle, one side of the butt joint part is concavely provided with a butt joint groove for the handle to be inserted, the upper side and the lower side of the butt joint groove are provided with butt joint holes aligned with the combination hole in a penetrating way, and riveting pieces are riveted in the butt joint holes and the combination hole.

The hasp structure of handle, wherein: the other side of the base of the positioning device, which is opposite to the butt joint part, is convexly provided with a pulling body.

The hasp structure of handle, wherein: a sliding groove which is deeper than the limiting groove and is used for the limiting body to slide is cut inwards at the opening of the accommodating groove of the base, one side of the sliding groove is communicated with the limiting groove, and a stop surface used for stopping on the side surface of the limiting body is formed on the other side of the sliding groove.

The hasp structure of handle, wherein: the other side of the through hole of the base is concavely provided with a containing groove for placing the stop body, the bottom surface of the containing groove is concavely provided with a positioning hole, the front surface of the stop body of the positioning element is concavely provided with a fixing hole, and the positioning part of the elastic element is positioned at two ends of the base part and respectively extends to form a positioning end positioned in the positioning hole and the fixing hole.

The hasp structure of handle, wherein: the center of the head of the positioning element is provided with a riveting hole in a penetrating way, and one end of the rod body of the positioning element is provided with a riveting head riveted in the riveting hole.

The hasp structure of handle, wherein: the fixing part of the positioning element is provided with a stop piece at two opposite sides.

The hasp structure of handle, wherein: the elastic element has a through hole formed in the base for the shaft to pass through.

The hasp structure of handle, wherein: the handle end of the handle is bent with a vertical section, a combining hole penetrates through the surface of the vertical section, a butt joint part combined with the handle is arranged at the side edge of the base of the positioning device, a butt joint groove for the handle to pass through is longitudinally penetrated through one side of the butt joint part, butt joint holes aligned with the combining hole are formed in two opposite side surfaces of the butt joint groove in a penetrating mode, and riveting pieces are riveted in the butt joint holes and the combining hole.

The hasp structure of handle, wherein: the handle surface of the handle is provided with a plurality of combining holes which are arranged at intervals along the longitudinal direction, the side edge of the base of the positioning device is provided with a butt joint part which is combined with the handle, one side of the butt joint part is transversely provided with a butt joint groove for the handle to pass through, the upper side and the lower side of the butt joint groove are provided with butt joint holes which are aligned with the combining holes in a penetrating way, and riveting pieces are riveted in the butt joint holes and the combining holes.

The utility model has the main advantages that the handle is provided with a shaft part on the surface for being pivoted on the machine box, one side of the handle is provided with a buckling part for buckling on the machine box, the other side of the handle is extended with a grab handle, the grab handle is combined with a base of a positioning device, the front side and the rear side of the base are provided with through holes, one side of the through hole is concavely provided with a containing groove with larger outer diameter, the opening of the containing groove is inwards provided with a limit groove, the head part of the positioning element is contained in the containing groove, one side of the head part is convexly provided with a limit body movably limited in the limit groove, one side of the head part is extended with a rod body penetrating in the through hole, the other end of the rod body is provided with a stop body for stopping on the plate of the machine box, the other side of the stop body is extended with a fixed part for being positioned on the plate, the rod body is sleeved with an elastic element, and two ends of, when the buckling part of the handle is buckled on the case, the limiting body of the head is separated from the limiting groove of the base, and the elastic element is connected with the original torsion state to generate elastic reset, so that the fixing part of the positioning element is automatically locked on the case, and the fixing part is stably combined on the case, so that the situations of shaking and shaking cannot occur, the situation of loosening caused by collision can be avoided, and the purpose of improving the locking stability of the handle is achieved.

The utility model discloses a secondary advantage lies in when this positioner wants to fix a position on the machine box, only needs to rotate the handle, alright reach the effect of automatic lock solid to make operation flow utensil intuition, and need not carry out extra outer lock solid action, and then reach the purpose that promotes the lock solid smoothness degree.

The utility model discloses a still another advantage lies in when this positioner is located the machine box, its elastic element is the elasticity compression state, and when positioner carried out the unblock operation, the spacing meeting of this head was adjusted the spacing groove of base well, at this moment, this elastic element just can produce elasticity and reset to rely on elastic element to come base and positioning element outwards to push relatively, and then make the spacing body of head automatically enter into and be a spacing in the spacing groove of base, the purpose of convenience when so reaching the promotion operation.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is an exploded perspective view of the present invention after assembly.

Fig. 3 is an exploded perspective view of the present invention from another perspective after assembly.

Fig. 4 is an exploded perspective view of the present invention before assembly.

Fig. 5 is a side sectional view of the present invention.

Fig. 6 is a schematic view (a) of the present invention in use.

Fig. 7 is a schematic view (ii) of the present invention in use.

Fig. 8 is a schematic view (iii) of the present invention in use.

Fig. 9 is a schematic view (iv) of the present invention in use.

Fig. 10 is a side sectional view after the locking of the present invention.

Fig. 11 is a perspective view of the lock according to another embodiment of the present invention.

Fig. 12 is an exploded perspective view illustrating another embodiment of the present invention when locked.

Fig. 13 is a perspective view of a lock according to another embodiment of the present invention.

Fig. 14 is an exploded perspective view of a handle of a conventional chassis.

Fig. 15 is a perspective view of a conventional chassis handle.

Description of reference numerals: 1-a handle; 11-a shaft portion; 111-shaft hole; 12-a retaining portion; 121-catching grooves; 13-a grab handle; 13A-upright section; 131-a bonding hole; 2-a positioning device; 21-a base; 210-perforating; 211-a receiving groove; 212-a limiting groove; 213-a sliding groove; 2131-a stop surface; 214-a receiving groove; 215-locating holes; 216 — a docking station; 2161-docking bay; 2162-a docking well; 2163-riveting; 217-a pulling body; 22-a positioning element; 221-a head; 2211-stop block; 2212-riveting holes; 222-a shaft; 2221-riveting head; 223-a stop body; 2231-fixing holes; 224-a fixation section; 2241-a stop; 23-a resilient element; 231-a base; 2311-a through hole; 232-a positioning part; 2321-locating end; 3-a case; 31-a buckle block; 4-a machine box; 41-seat board; 42-a connecting shaft; 43-a plate; 431-buttonhole; a-a movable handle; a 1-locking element; a 2-fastener; b-a conjugate; b1-column; b11-internal screw hole.

Detailed Description

To achieve the above objects and advantages, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Please refer to fig. 1, fig. 2, fig. 3, fig. 4, and fig. 5, which are a perspective view, a perspective exploded view after assembly, a perspective exploded view at another viewing angle after assembly, a perspective exploded view before assembly, and a side sectional view, as can be clearly seen from the figures, the present invention includes a handle 1 and a positioning device 2, wherein:

the handle 1 is provided with a shaft portion 11 on the surface, the shaft portion 11 is provided with a shaft hole 111 penetrating in the longitudinal direction, a buckling portion 12 is provided on one side of the handle 1, a buckling groove 121 is cut on one side of the buckling portion 12, a handle 13 extends from the other side of the handle 1, and a combination hole 131 penetrating in the longitudinal direction is provided on the surface of the handle 13.

The positioning device 2 comprises a base 21, a positioning element 22 and an elastic element 23, wherein the base 21 has a through hole 210 passing through the front and rear sides thereof, a receiving groove 211 with a larger outer diameter is concavely provided on one side of the through hole 210, a limiting groove 212 is inwards provided at the opening of the receiving groove 211, a sliding groove 213 with a depth smaller than that of the limiting groove 212 is inwards provided at the opening of the receiving groove 211, one side of the sliding groove 213 is communicated with the limiting groove 212, a stop surface 2131 is formed at the other side of the sliding groove 213, a receiving groove 214 with a larger outer diameter is concavely provided at the other side of the through hole 210, a positioning hole 215 is concavely provided at the bottom surface of the receiving groove 214, an abutting part 216 combined with the handle 13 is provided at the side of the base 21, an abutting groove 2161 for inserting the handle 13 is concavely provided at one side of the abutting part 216, an abutting hole 2162 aligned with the combining hole 131 is provided at the upper and the lower two sides of the abutting groove 2161, and a riveting member 2163 is riveted in the two, and the other side of the base 21 opposite to the butt joint part 216 is provided with a pulling body 217 in a protruding way.

The positioning element 22 of the positioning device 2 has a cylindrical head 221 located in the receiving groove 211 of the base 21, a position-limiting body 2211 is convexly disposed on one side of the head 221, a riveting hole 2212 is formed through the center of the head 221, a shaft body 222 is disposed in the riveting hole 2212 of the positioning element 22, a riveting head 2221 riveted in the riveting hole 2212 is disposed at one end of the shaft body 222, a stopper 223 with a larger outer diameter is disposed at the other end of the shaft body 222, a fixing hole 2231 is concavely disposed on the front surface of the stopper 223, a fixing portion 224 extends from the other side of the stopper 223, stoppers 2241 are respectively convexly disposed at two opposite sides of the fixing portion 224, an elastic element 23 made of an elastic material (such as a metal wire, rubber, plastic, synthetic resin or other elastic wires) is sleeved on the shaft body 222 of the positioning element 22, the elastic element 23 has a ring-shaped base 231 for elastic compression or restoration, a through hole 2311 for the shaft 222 to pass through is formed in the base 231, two ends of the base 231 are provided with positioning portions 232 fixed on the base 21 and the stopper 223, and the positioning portions 232 are located at two ends of the base 231 and respectively extend to form positioning ends 2321 positioned in the positioning hole 215 and the fixing hole 2231.

When the present invention is actually assembled, the elastic element 23 of the positioning device 2 is firstly sleeved on the shaft 222 of the positioning element 22, so that the positioning end 2321 of the positioning portion 232 on one side of the elastic element 23 is inserted into the fixing hole 2231 of the stopping body 223, the positioning element 22 is inserted into the through hole 210 of the base 21, the positioning end 2321 of the positioning portion 232 on the other side of the elastic element 23 is inserted into the positioning hole 215 of the base 21, the elastic element 23 is twisted (clockwise or counterclockwise) by a predetermined angle, so that the base 231 of the elastic element 23 is deformed into a twisted state, the head 221 of the positioning element 22 can be placed into the accommodating groove 211 of the base 21, and the riveting hole 2212 at the center of the head 221 is riveted on the riveting head 2221 at one end of the shaft 222 to form a combined state, at this time, the stopper 2211 of the head 221 is limited in the limiting groove 221212 of the base 21, so as to avoid the positioning element 22 from axially rotating, and then maintain the elastic element 23 in the twisted state, and after the assembly of the device 2 to be positioned is completed, the handle 13 of the handle 1 can be inserted into the butt-joint groove 2161 of the butt-joint part 216 of the base 21, so that the butt-joint holes 2162 at the upper and lower sides of the butt-joint groove 2161 are aligned with the combination hole 131 on the surface of the handle 13, and then the riveting member 2163 is used to pass through the two butt-joint holes 2162 to be riveted and positioned with the combination hole 131, so that the handle 1 and the positioning device 2 are firmly combined into a whole, thus completing the assembly operation of the present invention.

Referring to fig. 6, 7, 8, 9, 10, which are schematic views of the present invention (i), (ii), (iii), (iv) and the side sectional view after locking, it is clearly seen from the drawings that the handle 1 of the present invention is a plurality of drawing type machine boxes 4 for assembling in the machine box 3 of the computer operation system, and the seat plate 41 protruded from the machine box 4 is used for assembling the handle 1, the surface of the seat plate 41 is protruded with a connecting shaft 42, which can be passed through and riveted in the shaft hole 111 of the shaft 11 of the handle 1 through the connecting shaft 42, and a vertical plate 43 is disposed at one side of the seat plate 41, and a rectangular fastening hole 431 is penetrated on the surface of the plate 43, and when the user holds the handle 13 of the handle 1, and uses the shaft hole 111 of the shaft 11 and the shaft hole 42 of the seat plate 41 as axes, the handle 1 rotates in a fan shape, the positioning device 2 will rotate towards the plate 43 of the case 4 to make the fixing portion 224 of the positioning element 22 inserted into the fastening hole 431 on the surface of the plate 43, at this time, the stop body 223 of the positioning element 22 will abut against the surface of the plate 43 (as shown in fig. 7), and then the handle 13 will be rotated continuously, so that the base 21 of the positioning device 2 will slide on the surface of the stop body 223, so that the stop body 223 will be accommodated in the accommodating groove 214 of the base 21, and the base portion 231 of the elastic element 23 will be in a compressed state, and the stopper 2211 of the head portion 221 of the positioning element 22 will be disengaged from the stopper groove 212 of the base 21 (as shown in fig. 8), meanwhile, the torsion state generated by the base portion 231 of the elastic element 23 will elastically return, so that the positioning portion 232 of the elastic element 23 fixed on the stop body 223 will rotate, so as to make the fixing portion 224 with the positioning element 22 axially rotate, thus, the two stopping members 2241 of the fixing portion 224 are rotatably fastened to the other side surface of the plate 43 to form a locked state, and after the limiting body 2211 of the head portion 221 is disengaged from the limiting groove 212 of the base 21, the sliding displacement is performed along the sliding groove 213 of the base 21, and the limiting body 2211 is stopped by the stopping surface 2131 to form a limit position (as shown in fig. 9), at this time, the handle 1 is fastened to the fastening block 31 inside the case 3 by using the fastening groove 121 of the fastening portion 12, so as to achieve the purpose of stabilizing, assembling and positioning the case 4 inside the case 3 and completing the fastening, and the handle 1 is stably positioned, and is not easy to loosen or disengage.

When the case 4 is to be taken out from the case 3, the user can first use fingers to pull back the position-limiting body 2211 of the head 221 to align with the opening of the position-limiting groove 212 of the base 21, and then the two stopping members 2241 of the belt-fixing portion 224 align with the fastening hole 431 of the plate 43, at this time, the base 231 of the elastic element 23 will elastically return to push against the bottom surface of the receiving groove 214 of the base 21 and the surface of the stopping member 223 of the positioning element 22 respectively by means of the two ends of the elastic element 23, so that the base 21 is outwardly displaced on the stopping member 223 of the positioning element 22, and thus the position-limiting body 2211 of the head 221 enters the position-limiting groove 212 of the base 21 again to form a position limitation, and the user can hold the handle 13 of the handle 1 and rotate the handle 1 in a fan-shaped reverse direction, so that the fastening groove 121 of the belt-fixing portion 12 is separated from the fastening block 31 of the case 3, and the fixing portion 224 of the positioning element 22 is separated from the fastening hole 431 of the plate 43, thereby can supply the user to take out the machine box 4 from the machine case 3 to the outside, and then reach the purpose that utilizes the handle 1 to supply the machine box 4 to unbuckle, and then accomplish the utility model discloses an use.

The shaft 11 of the handle 1 is preferably connected to the connecting shaft 42 of the case 4 by riveting, but in practical applications, the shaft 11 of the handle 1 can be connected to the seat plate 41 by screwing or buckling, however, the shaft 11 of the handle 1 can be connected to the case 4 by many ways, and the above detailed description is for the description of the preferred practical embodiment of the present invention, but this embodiment is not intended to limit the claimed scope of the present invention, and all other equivalent changes and modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.

Referring to fig. 11 and 12, which are a perspective view of another embodiment of the present invention and a perspective exploded view of another embodiment of the present invention, it is clearly seen from the drawings that an upright section 13A is bent at the end of a handle 13 of a handle 1, and the upright section 13A is provided with a combining hole 131, and the combining hole 131 is provided with a positioning device 2, which is ninety degrees compared to the preferred embodiment because the positioning device 2 is arranged in the right direction, so that a fastening hole 431 on a plate 43 of a case 4 is ninety degrees compared to the preferred embodiment, so that a positioning element 22 of the positioning device 2 can be reliably fastened and positioned in the fastening hole 431, and the upright section 13A is bent at the end of the handle 13, so that the whole width can be reduced by the upright section 13A, and the electronic element (not shown in the figure) can be flashed through the inside of the case 4, thus improving the universality of use.

Referring to fig. 13, which is a perspective view of another embodiment of the present invention when locking, as can be clearly seen from the figure, the handle 13 of the handle 1 of the present invention is provided with a plurality of coupling holes 131 arranged at intervals, and the docking slot 2161 of the docking portion 216 at one side of the base 21 of the positioning device 2 is transversely through, when the handle 13 of the handle 1 is inserted into the docking slot 2161 of the docking portion 216, it can be outwardly extended from the other side of the docking slot 2161, so that the base 21 of the positioning device 2 can be slidably moved on the handle 13, and the base 21 can rivet the rivet member 2163 of the docking portion 216 in the appropriate coupling hole 131 according to different requirements, so as to improve the convenience and the universality of use, and when the handle 1 of the other embodiment is locked or unlocked to rotate in a sector shape, the overall length of the handle 1 is not changed, therefore, the original torque of the handle 1 can be maintained, and the smoothness of the operation can be maintained.

The utility model has the advantages of that:

when the fastening portion 12 of the handle 1 is fastened on the case 3, the position-limiting body 2211 of the head 221 is separated from the position-limiting groove 212 of the base 21, and the original torsion state of the elastic element 23 is restored by elasticity, so that the fixing portion 224 of the positioning element 22 is automatically locked on the case 4, thereby stably combining the utility model on the case 4, the situation of shaking and swaying can not occur, so as to avoid the situation of loosening caused by collision, and further, the utility of improving the locking stability of the fastening portion 12 of the handle 1 is achieved.

When the positioning device 2 is to be positioned on the case 4, the automatic locking effect can be achieved only by rotating the handle 1, so that the operation process is intuitive, additional locking action is not required, and the effect of improving locking smoothness is achieved.

Third, when the positioning device 2 is positioned on the case 4, the elastic element 23 is in an elastic compression state, and when the positioning device 2 is unlocked, the position-limiting body 2211 of the head 221 is aligned with the position-limiting groove 212 of the base 21, at this time, the base 231 of the elastic element 23 is elastically restored, so that the base 21 and the positioning element 22 are pushed outwards by the elastic element 23, and the position-limiting body 2211 of the head 221 automatically enters the position-limiting groove 212 of the base 21 to be limited, thereby improving the convenience in operation.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a hasp structure of handle which characterized in that includes handle and positioner, wherein:

2. The structure of claim 1, wherein: the shaft portion of the handle has a shaft hole penetrating in the longitudinal direction.

3. The structure of claim 1, wherein: one side of the buckling part of the handle is provided with a buckling groove.

4. The structure of claim 1, wherein: the handle surface of the handle is provided with a longitudinally-through combination hole, the side edge of the base of the positioning device is provided with a butt joint part combined with the handle, one side of the butt joint part is concavely provided with a butt joint groove for the handle to be inserted, the upper side and the lower side of the butt joint groove are provided with butt joint holes aligned with the combination hole in a penetrating way, and riveting pieces are riveted in the butt joint holes and the combination hole.

5. The structure of claim 4, wherein: the other side of the base of the positioning device, which is opposite to the butt joint part, is convexly provided with a pulling body.

6. The structure of claim 1, wherein: a sliding groove which is deeper than the limiting groove and is used for the limiting body to slide is cut inwards at the opening of the accommodating groove of the base, one side of the sliding groove is communicated with the limiting groove, and a stop surface used for stopping on the side surface of the limiting body is formed on the other side of the sliding groove.

7. The structure of claim 1, wherein: the other side of the through hole of the base is concavely provided with a containing groove for placing the stop body, the bottom surface of the containing groove is concavely provided with a positioning hole, the front surface of the stop body of the positioning element is concavely provided with a fixing hole, and the positioning part of the elastic element is positioned at two ends of the base part and respectively extends to form a positioning end positioned in the positioning hole and the fixing hole.

8. The structure of claim 1, wherein: the center of the head of the positioning element is provided with a riveting hole in a penetrating way, and one end of the rod body of the positioning element is provided with a riveting head riveted in the riveting hole.

9. The structure of claim 1, wherein: the fixing part of the positioning element is provided with a stop piece at two opposite sides.

10. The structure of claim 1, wherein: the elastic element has a through hole formed in the base for the shaft to pass through.

11. The structure of claim 1, wherein: the handle end of the handle is bent with a vertical section, a combining hole penetrates through the surface of the vertical section, a butt joint part combined with the handle is arranged at the side edge of the base of the positioning device, a butt joint groove for the handle to pass through is longitudinally penetrated through one side of the butt joint part, butt joint holes aligned with the combining hole are formed in two opposite side surfaces of the butt joint groove in a penetrating mode, and riveting pieces are riveted in the butt joint holes and the combining hole.

12. The structure of claim 1, wherein: the handle surface of the handle is provided with a plurality of combining holes which are arranged at intervals along the longitudinal direction, the side edge of the base of the positioning device is provided with a butt joint part which is combined with the handle, one side of the butt joint part is transversely provided with a butt joint groove for the handle to pass through, the upper side and the lower side of the butt joint groove are provided with butt joint holes which are aligned with the combining holes in a penetrating way, and riveting pieces are riveted in the butt joint holes and the combining holes.