CN210095399U - Umbrella hanging rack for school classroom - Google Patents

Abstract

The umbrella hanging rack for the school classroom comprises a hanging frame body formed by combining a cross rod, a left end arm and a right end arm, a left main seat and a right main seat which are fixed on a wall vertical surface in equal height, and a hole sealing component A or a hole sealing component B which is assembled between the front side of the main seat and a middle opening of a surface cover, wherein the surface cover is reliably and fixedly buckled with the main seat. When the end arm pushes against the side door or the top door and is inserted into the central hole of the socket, the cross rod can hang the umbrella, and when the umbrella is not needed to be hung, the side door or the top door is pulled out from the central hole, so that the application is released, and the side door or the top door self-closes the central hole of the socket. The umbrella hanging rack has the advantages that the operation of switching between use and disuse of the umbrella hanging rack is extremely simple, the socket central hole sealing structure in an inward-rotation avoiding mode is adopted, and the safety is good, and the concealment is strong.

Description

Umbrella hanging rack for school classroom

Technical Field

The utility model relates to a storage rack, namely an umbrella hanging rack for classrooms of schools.

Background

The design scheme of the Chinese patent 201420858797.4 (umbrella hanging rack convenient to use) comprises a hanging frame body, a left socket and a right socket, wherein the socket is mainly composed of a main seat and a surface cover, a convex column body is arranged at the rear side of the middle part of the main seat, the convex column body comprises a central blind hole, small holes for screws to penetrate are arranged at four corners of the main seat, and two main seats are fixed on the vertical wall surface of a classroom corridor (at the height of about 1m from the ground) in a same height; the left and right end arms of the hanging frame body can be inserted into blind hole channels of the left and right main seats in a matching way, and various umbrellas can be hung on the hanging frame body (the cross rod) in a flat end state in a centralized way.

Even in southern China where much rainwater is present, the umbrella hanging rack is not needed for rainy days for more than half of the time, so the patent designs the surface cover (and the corner sealing piece for preventing the panel from falling off) which is fastened on the main seat in a sliding way and is used for shielding the screw heads in the central blind hole and the small holes at the four corners of the main seat. In rainy days, an operator manually moves the surface cover upwards to expose the central blind hole of the main seat (the surface cover is still partially hung on the main seat), the rear section of the end arm of the hanging frame body is inserted into the blind hole channel of the main seat, and then the umbrella is hung on the cross rod of the hanging frame body in a centralized manner (the lower side of the surface cover is located on the upper side of the end arm). When the umbrella hanging frame is not needed to be used in the rainy day, the left end arm and the right end arm are drawn out from the central blind holes of the left main seat and the right main seat, the face cover automatically falls down by the self gravity to just completely shield the main seat, and the whole socket returns to the normal state of simple appearance (the other part of the hanging frame body which is drawn away is retracted). Although the face cover has good shielding effect on the installation traces of the main seat and the central blind hole and is simple in image, the area of the face cover cannot be small and exquisite, the connection mode with the main seat is relatively fragile, and the face cover is easy to cause 'research' of active students to try to dismantle and damage, so that screw heads at the blind hole channel and the four corners of the main seat are exposed for a long time, and the face cover is not suitable for teaching places which attach importance to safety and embody the image.

Disclosure of Invention

The utility model aims to provide an umbrella hanging frame which is simple and convenient to use and operate and can still shield the central hole of a self-sealing socket and the installation traces of a main base.

The technical scheme of the utility model: the umbrella hanging rack for the school classroom comprises a hanging frame body composed of a cross rod, a left end arm and a right end arm, a left main seat and a right main seat which are fixed on a wall vertical surface at equal height, a convex column body extending behind the middle part of the main seat and provided with a central hole for the insertion of the end arm, and the umbrella hanging rack further comprises one of the following structures:

1) an upper concave area and a lower concave area are arranged on one side of a front opening of a central hole of each main seat, each main seat corresponds to a hole sealing component A which is formed by a side door, a torsion spring and a steel shaft, the steel shaft penetrates through the torsion spring and is connected with the torsion spring by a U-shaped hook of the side door, the upper end and the lower end of the steel shaft are respectively embedded into the upper concave area and the lower concave area, and the surface cover and the main seats are fixedly buckled through correspondingly contained micro hooks and concave buckles;

2) the upside of the front opening of the center hole of the main seat is provided with a special-shaped concave area, each main seat corresponds to a hole sealing component B synthesized by a top door and a steel shaft, the steel shaft is hooked by a U-shaped hook of the top door, the left end and the right end of the steel shaft are respectively embedded into the left end and the right end of the special-shaped concave area, and the surface cover and the main seat are fixedly fastened through a micro hook and a concave buckle correspondingly contained.

At least one of the side door, the top door or the side door with the width larger than the width of the middle opening of the surface cover, or the side door with the height larger than the height of the middle opening of the surface cover, or the side door with the area larger than the area of the middle opening of the surface cover is formed.

The center hole of the convex cylinder of the main seat is provided with a bottom groove, and the side surface of the end arm is provided with a bolt head hung in the bottom groove.

The main seat, the face cover and one of the hole sealing components A, B is the socket of the present design.

This design umbrella is hung and is put installation of frame main base:

2 large holes and small holes around each large hole are drilled at the same height on the vertical surface of the wall, the convex cylinders of the left main seat and the right main seat are respectively arranged in the left large hole and the right large hole of the wall, the distance between the central holes of the left main seat and the right main seat is just equal to the distance between the left arm and the right arm of the hanging frame body (all the drilled holes are continuously and accurately obtained at one time by a special tool, see Chinese patent 201920337927.2), and the left main seat and the right main seat are fixed on the vertical surface of the wall by self-tapping screws and the small holes around the. And finishing the installation of the main seat.

The assembly of this design umbrella hanging rack socket corresponding to hole sealing component A:

① the U-shaped hook of the side door is connected with the steel shaft, the steel shaft is respectively connected with 1 torsion spring (to this end, the hole sealing component A is formed) at the upper and lower ends of the U-shaped hook, the upper and lower ends of the steel shaft are embedded into the upper and lower concave areas at the side of the center hole of the main seat relative to each main seat fixed on the vertical surface of the wall;

the maximum width of the side door is slightly smaller than the width of the front opening of the central hole of the main seat, so that the side door can be just filled into the front opening of the central hole of the main seat, but the front convex layer of the side door protrudes out of the front opening surface of the central hole of the main seat.

② the surface covers are respectively fixed and buckled on the left and the right main seats (so far, the socket of the umbrella hanging rack of the design is formed) by the corresponding matching of the micro hooks carried by the surface covers and the concave buckles carried by the main seats.

Because the maximum width of the side door is obviously larger than the width of the middle opening of the face cover, the side door cannot fall out of the middle opening of the face cover at the moment; at the moment, the front convex layer of the side door is just positioned in the middle opening of the face cover, namely, the middle opening of the face cover is well sealed, and the overall appearance of the socket is flat.

Therefore, the socket can be further composed of a main seat, a steel shaft, a torsion spring, a side door and a face cover.

The assembly of the umbrella hanging rack socket corresponding to the hole sealing component B is as follows:

① relative to each main seat, the U-shaped hook of the top door is connected with the steel shaft (i.e. the hole sealing component B is formed), the left and right ends of the steel shaft are embedded into the special-shaped concave area on the upper side of the central hole of the main seat;

because the maximum width of the middle-lower section of the top door is slightly smaller than the width of the front opening of the central hole of the main seat, the top door can be just filled into the front opening of the central hole of the main seat, but the front convex layer of the top door protrudes out of the front opening surface of the central hole of the main seat.

② the surface covers are respectively fixed and buckled on the left and right main seats (so far, another socket of the umbrella hanging rack of the design is formed) by the corresponding matching of the micro hooks carried by the surface covers and the concave buckles carried by the main seats.

Because the maximum width of the top door is obviously larger than the width of the middle opening of the surface cover, the top door cannot be separated from the middle opening of the surface cover at the moment; at the moment, the front convex layer of the top door is just positioned in the middle opening of the surface cover, namely, the middle opening of the surface cover is well sealed, and the whole appearance of the socket is smooth.

From the above, the socket of the design can also be composed of a main seat, a steel shaft, a top door and a face cover.

On the premise that the surface cover is fixedly buckled with the main seat, the hole sealing component A, the hole sealing component B and the assembling relation between the hole sealing component A and the hole sealing component B and the main seat are reliably maintained all the time. The left socket and the right socket assembled based on the hole sealing component A or the hole sealing component B are suitable for inserting into the left end arm and the right end arm of the frame body, namely the umbrella hanging frame in the design enters a usable state.

This design umbrella is hung and is put use of frame:

the back ends of the left and right end arms are respectively and directly pushed against the front convex layers (of the side door or the top door) in the middle openings of the left and right covers, the side door rotates in the center hole of the main seat and is attached to the inner wall of one side, or the top door rotates upwards and is attached to the inner wall of the upper side of the center hole of the main seat, then the back sections of the left and right end arms are inserted into the center holes of the left and right main seats, when the hand-feeling end arms are inserted to the bottom (touch the back plate of the main seat), the hanging frame body is slightly pressed downwards (the bolt head on the side surface of the end arm falls into the bottom groove of the center hole, the bolt head is reliably blocked by the vertical surface of the bottom groove, the back operator withdraws both hands), the end arms are restrained by the cavity of the center holes of the sockets, the basic end.

The central hole of the socket is the coherent combination of the central hole of the face cover and the central hole of the main seat.

The umbrella hanging rack with the design has the advantages that the use state is relieved:

① slightly lifting the hanging frame (removing the block of the end face of the bottom groove of the central hole of the main seat to the side bolt head of the end arm) by the operator (single hand), and drawing out the end arm (storing the other part of the hanging frame) from the central hole of the left and right sockets;

② (the torsion spring releases the bounce or because of the gravity) the side door or the top door in the central hole of the socket automatically close the central hole of the face cover (and the side door or the top door can not be separated from the central hole of the face cover because of the direct blocking of the central hole of the face cover).

At the moment, only thin left and right sockets are left on the wall facade.

The positive effect of this design: the umbrella hanging frame has the advantages that the left end arm and the right end arm of the hanging frame body (pushing against the front convex layer of the side door or the top door) are inserted into the center holes of the left socket and the right socket, the umbrella hanging frame body can be hung for application, the umbrella hanging frame body is pulled out from the hanging frame body (stored in another place) from the center holes of the sockets (locking of the end arms is removed) and then is removed, the rebound force released by the torsion spring pushes the side door to close the center holes of the sockets or the top door self-closes the center holes of the sockets under the action of gravity, and the umbrella hanging. Due to the fact that the pipe bundle of the central hole of the socket and the inner bottom groove of the pipe bundle are buckled on the end arm bolt head, the umbrella hanging state of the umbrella hanging frame is stable and reliable. The sealing structure of the central hole of the socket adopts an avoiding mode that the side door and the top door rotate inwards, the anti-disassembly safety is good, the form is hidden, and the local part of the socket and the overall appearance of a product are concise all the time.

Drawings

FIG. 1a is a schematic view showing an umbrella hanging state of the umbrella hanging rack, FIG. 1b is a visual view of a hanging frame body from a perspective, FIG. 1c is a front side view of a left main seat, and FIG. 1d is a front side view of a right main seat corresponding to FIG. 1 c.

Fig. 2a is a schematic view of the main seat shown in fig. 1c, fig. 2b is a rear view of the main seat of the present design, fig. 2c is a sectional view of the main seat a-a of fig. 2a, fig. 2D is a schematic view of the main seat a-a of fig. 2c, and fig. 2e is a sectional view of the main seat D-D of fig. 2 c.

Fig. 3a is a schematic view of an end arm with a bolt head on the side, and fig. 3b is a schematic view of the manner in which the bolt head is "half locked" when the end arm is inserted into the center hole of the main seat shown in fig. 2 e.

Fig. 4a-b are schematic diagrams of the side door of the design in different viewing angles, fig. 4c is a plan view of the side door in the n-viewing direction of fig. 4a, fig. 4d is a plan view of the side door shown in fig. 4c, fig. 4e is a schematic diagram of a hanging manner of a U-shaped hook of the side door to a steel shaft, fig. 4f is a schematic diagram of a hole sealing assembly a consisting of the steel shaft, the side door and 2 symmetrical torsion springs, fig. 4g is a schematic diagram of another side door, and fig. 4h is a schematic diagram of a simplified hole sealing assembly a consisting of the side door shown in fig. 4g, the steel shaft.

Fig. 5a is a schematic view of the assembly of the sealing assembly a to the main seat (the section at B-B in fig. 2 a) in a top view, fig. 5B is a schematic view of the assembly of the face cover (corresponding to the section at B-B in fig. 2 a) to the main seat in a top view, fig. 5c is a schematic view of the assembly effect of the sealing assembly a, the face cover and the main seat, fig. 5d is a schematic view of the state of the central hole of the socket in fig. 5c after the insertion of the end arm, fig. 5e is a schematic view of the relative position relationship between the sealing assembly a and the central hole of the main seat in fig. 5d, fig. 5f is a schematic view of the working state of the torsion spring in fig. 5e, fig. 5g is a schematic view of the working state of the torsion spring in fig. 5 c.

Fig. 6a is a schematic view of a face cover corresponding to the sealing assembly a and to be fastened to the main seat of fig. 2a, fig. 6b is a sectional view taken from a position C to a position C of the main seat of fig. 2b, fig. 6C is a sectional view taken from a position E to a position E of fig. 6a and fig. 10a, and fig. 6d is a schematic view (partially enlarged) of fastening and fixing manner of micro hooks of the face cover to female fasteners of the main seat.

Fig. 7a is a schematic view of the main seat of the present design corresponding to the top door, fig. 7b is a sectional view taken at the position F-F of fig. 7a, and fig. 7c is a schematic view in the s-direction of the structure of fig. 7 b.

Fig. 8a is a top view of the design, fig. 8B is a sectional top view of G-G of fig. 8a, fig. 8c-d are schematic views of the sealing assembly B in different situations, and fig. 8e is a schematic view of the switching manner between different states of the sealing assembly B.

Fig. 9a is a schematic view of the sealing assembly B assembled to the main seat of fig. 7a, fig. 9B is a schematic view of the H-H position of fig. 9a in cross section, fig. 9c is a schematic view of the end arm inserted into the central hole of the main seat of fig. 9B, fig. 9d is a schematic view of the relative position of the sealing assembly B and the central hole of the main seat of fig. 9c, and fig. 9e is a schematic view of the main seat of fig. 9d with the sealing assembly B removed from the central hole.

Fig. 10a is a schematic view of a face cover corresponding to the sealing assembly B, fig. 10B is a schematic view of a socket of the present design after assembly (without dividing the sealing assembly A, B), and fig. 10c is a schematic view (partial) of a K-K section of fig. 10B with the sealing assembly B assembled.

Fig. 11a is a schematic view of the main base with the rear side of the front panel being gradually thickened from top to bottom, and fig. 11b is a diagram of the main base of fig. 11a in a state that the end arm of the hanging frame is inserted into the central hole of the main base after the main base is fixed on the wall surface.

Detailed Description

Example 1. See FIGS. 1 a-b: the umbrella hanging rack comprises a hanging frame body (shown in figure 1 b) and 2 main seats (shown in figures 1c-d), and the hanging frame body is formed by vertically and fixedly connecting a left end arm (12), a right end arm (12) and a cross rod (11) between the left end arm and the right end arm. The left main seat (2) and the right main seat (2) are fixed on a wall vertical surface in a horizontal equal height mode, the left end arm (12) and the right end arm (12) of the frame hanging body are respectively inserted into the central holes (22) of the left main seat (2) and the right main seat (2), the frame hanging body is in a space end-flat state, and the cross rod (11) is suitable for hanging umbrellas in a classroom scene. When no rain and weather exists, the left and the right main seats (2) are drawn away from the other part of the hanging frame body for storage. When rain occurs again, the left end arm (12) and the right end arm (12) of the frame hanging body are inserted into the central holes (22) of the left main seat and the right main seat again, and then the cross rod (11) of the frame hanging body can hang the umbrella again.

A bottom groove (222) is reserved in the main seat central hole (22), and the lower bottom edge of the central hole front opening (221) is a groove end vertical surface (223), see fig. 2 d-e. Only the process of manufacturing the bottom groove (222) structure in the central hole (22) needs, and a through hole (212) communicated with the central hole (22) is reserved below the rear plate (211).

Referring to fig. 2a and 2c, one side of the central bore front opening (221) is provided with upper and lower recessed areas (241, 242) which can just receive the upper and lower ends of the steel shaft (4) in fig. 4 e-f.

Each main seat (2) corresponds to a hole sealing component a, the hole sealing component a is composed of a side door (6), a torsion spring (5) and a steel shaft (4), wherein the steel shaft (4) is connected with the torsion spring (5) in a penetrating way and is hung by a U-shaped hook (61) of the side door (6), see fig. 4a-f (fig. 4h shows the deformation and simplification of the side door of fig. 4f, but the functions and purposes of the side door and the side door are the same).

Referring to fig. 2a-b and 6a, the main seat (2) carries a series of female buttons (23), corresponding to the face cover (3) carrying a series of micro hooks (31). Referring to fig. 6b-d, when the micro hooks (31) are correspondingly fastened to the female fasteners (23), the surface cover (3) is securely fastened to the main seat (2) (see fig. 10 b).

The main seat (2) in fig. 5a is a schematic view of the section from the center B-B in fig. 2a, the sealing assembly a in fig. 5a is a top view of fig. 4f, and the sealing assembly a is installed in the main seat (2) in the direction of the arrow in fig. 5a, i.e. the steel shaft (4) is installed between the upper and lower concave regions (241, 242) at the front opening (221) side of the central hole of the main seat (refer to fig. 2a and fig. 4f for assistance).

Fig. 6a is a visual representation of the design of the face cover (3), and fig. 5B-e show a cross-sectional view of the face cover (3) at its central position (corresponding to the position B-B of the main seat in fig. 2 a). When the surface cover (3) is fastened on the main seat (2) (the surface cover is difficult to detach by hands without using a professional tool), the upper end and the lower end of the steel shaft (4) are limited in the upper concave area and the lower concave area (241, 242) by the surface cover (3) and cannot be detached. Moreover, because the maximum width (from the outer side of the side wing (63) to the outer ridge of the U-shaped hook (61)) of the side door (6) is obviously larger than the width of the middle opening (32) of the surface cover (3), the side door (6) can only be positioned in the main seat central hole (22) and cannot fall out of the middle opening (32) of the surface cover. In addition, in the process that the end arm (12) is inserted into the main seat central hole (22) (the state when the end of the insertion is shown in fig. 5d and fig. 3b), the side door (6) can only rotate (rotate 90 degrees) by taking the steel shaft (4) as a shaft and finally clings to the side wall of the central hole (22), and the hooking connection relation of the steel shaft (4) is not changed (cannot be changed) all the time (the specific situation in the process is that the end arm (12) pushes against the side door (6), the side door (6) presses against the torsion spring (5), so that the torsion spring (5) is fully pressed, the two straight sections of the torsion spring (5) are close to each other to be parallel, and at the moment, the side door is clings to the side wall of the central hole (22), and the partial side door; meanwhile, in the central hole (22) of the main seat, the bolt head (121) on the bottom surface of the end arm (12) is positioned in the bottom groove (222), and the bolt head (121) is blocked by the groove end vertical surface (223) (see the comparison between the figure 2d-e and the figure 3a-b), so that the end arm (12) cannot automatically withdraw from the central hole (22), and the cross rod (11) of the frame hanging body can be ensured to hang an umbrella (see the figure 1 a).

Of course, the main section of the middle part of the steel shaft (4) is not positioned in the upper and lower concave areas (241, 242), and under the condition that the two ends of the steel shaft are clamped, the side door (injection molding piece) has small weight (the weight of the injection molding piece is less than 2 grams or about several grams), the side door (injection molding piece) rotates in a reciprocating mode at 90 degrees when being stressed, and the strength of the steel shaft (4) in the U-shaped hook (61) is sufficient.

Referring to fig. 5h, the included angle α of the torsion spring (5) in the free state is generally between 120-150 ° (adjusted according to the wire diameter of the torsion spring, etc.), so the torsion spring (5) in fig. 5c is still in the compressed state (only the compression degree is smaller compared with fig. 5 d), the side door front convex layer (62) still tightly closes the closing surface cover middle opening (32) with force, for example, the closing is difficult to be released by common natural wind.

See FIGS. 5d-e and compare FIG. 5 c: when the end arm (12) is drawn out from the center hole (22) of the main seat, the originally compressed torsion spring (5) releases the rebound force, and pushes the side door (6) to rapidly rotate by 90 degrees to close the center hole (22) from the state of being attached to the inner wall of the center hole (22) (see the change of the torsion spring in fig. 5 f-g); at this time, the front convex layer (62) of the side door just fills the middle opening (32) of the face cover (see fig. 5c), and the appearance of the socket is flat and simple, see fig. 10 b.

The left and right main seats (2) and the matched left and right side doors (6) in the design can be the same or symmetrical. In practical products they are identical except that the configuration of the central hole is usually processed symmetrically, such as the outer surface of the circular convex column (21) behind them (see fig. 1c-d and fig. 2 a-d).

Referring to FIG. 10b and FIGS. 1 a-b: an operator hangs the frame body at the flat end, a left end arm and a right end arm (rear section) are inserted into a left socket center hole and a right socket center hole (22), the frame body is slightly pressed when the frame body touches a main seat rear plate (211), so that an end arm bolt head (121) falls into a center hole bottom groove (222), the bolt head (121) is reliably blocked by a groove end vertical surface (223) (the two hands of the operator withdraw at the moment), the end arm (12) is restrained by a cavity of the main seat center hole (22), and the hanging frame body is stably kept in a basic flat state (see figure 1 a).

Example 2. See FIGS. 7 a-c: a bottom groove (222) is reserved in the main seat central hole (22), and the lower bottom edge of the central hole front opening (221) (see fig. 9d-e) is a groove end vertical surface (223), see fig. 2 d-e. Only the process of manufacturing the bottom groove (222) structure in the central hole (22) needs, and a through hole (212) communicated with the central hole (22) is reserved below the rear plate (211). A special-shaped concave area (243) is arranged above a front opening (221) of the central hole of the main seat. Referring to fig. 7a-c, the left and right main seats (2) are identical.

Each main seat (2) corresponds to a hole sealing component B consisting of a top door (7) and a steel shaft (4), wherein a U-shaped hook (71) of the top door (7) is hung on the steel shaft (4), see fig. 8c-d, 8a-B and 8 e. The main seat special-shaped concave area (243) can just accommodate the upper top part of the hole sealing assembly B shown in the figure 8c, wherein the upper top part comprises the left end and the right end of the steel shaft (4); the top door (7) can be just filled into the front opening (221) of the central hole of the main seat and comprises two side wings (73) of the top door; the top door front projection (72) projects beyond the front side of the main seat (2), see fig. 9a and compare fig. 7 a.

With continued reference to fig. 7a, 9a and 10a, the main seat (2) carries a series of female hooks (23), corresponding to the face cover (3) carrying a series of micro-hooks (31). When the micro hooks (31) are correspondingly fastened with the concave buttons (23), the surface cover (3) is reliably fastened on the main seat (2) (the surface cover is difficult to detach by hands without using a professional tool), and the view is shown in fig. 10 b. Wherein, the front convex layer (72) is just filled in the middle opening (32) of the surface cover (3), the socket has smooth and clean appearance, the side fins (73) at the two sides of the top door are blocked (namely covered) by the surface cover (3), and the relative position relationship of the top door (7) and the main seat (2) and the surface cover (3) is shown in figure 10 c.

It is clear, in turn, that the top door (7) is constrained within the main seat central hole (22), which can rotate through no more than 90 ° about the steel shaft (4). Referring to fig. 10b, fig. 1b and fig. 1a, an operator hangs the frame body by the flat end, the end parts of the left and right end arms (rear sections) are pushed against the front convex layer (72), the top door (7) rotates in the central hole (22) to the upper back direction and finally clings to the inner wall of the central hole (22) (because of the common clamping of the special-shaped concave area (243) and the face cover (3), the U-shaped hook (71) of the top door is reliably buckled on the steel shaft (4)) all the time, the end arm (12) enters the central hole (32) of the face cover, enters the central hole (22) of the main seat and slightly presses the frame body down until touching the convex post body rear plate (211), the bolt head (121) at the side of the end arm (12) falls into the bottom groove (222) of the central hole, the bolt head (121) is firmly blocked by the groove end vertical surface (223) (after that, the hands of an operator are withdrawn), the end arm (12) is restrained by the cavity of the central hole (22) of the main seat, and the hanging frame is stably self-maintained in a basically flat state (see figure 1 a).

Referring to fig. 9c, 9d and 9b in sequence, when the end arm (12) is pulled out from the central hole (22) of the main seat, the top door (7) losing the fulcrum is rotated down under the action of gravity, and the top door just closes the central hole (22) of the socket, namely the front convex layer (72) of the top door closes the middle opening (32) of the surface cover. The socket appearance again presents a smooth and clean image and is self-retaining.

In the embodiment, the left main seat (2) and the right main seat (2) are the same, and the left top door (7) and the right top door (7) are bilaterally symmetrical, namely the front convex layer (72) is symmetrical, so that the left socket and the right socket are symmetrical.

Referring to fig. 2a and fig. 7a, in order to ensure that the end arm (12) can be inserted, the height of the front opening (221) of the central hole of the main seat must be slightly larger than the total height (including the lower side bolt head) of the end arm (12). Generally, after the main base (2) shown in fig. 2a-b or fig. 7a is fixed on the wall surface by self-tapping screws, the end arm (12) inserted into the central hole (22) of the main base slightly drops, i.e. the hanging frame body can not obtain the ideal horizontal state or slightly raised state. The simple and convenient processing method of the actual product under the insufficient condition comprises the following steps: the rear side of a front side shaped plate of a main seat (2) of an injection molding piece is gradually thickened from top to bottom (the maximum sum is 3 mm); the drill bit of the hole digger drills a hole in a wall body in a slightly downward mode (a specified downward angle is obtained by means of a shaping tool clamp), when the convex cylinder (21) of the main base is installed in the downward hole of the wall body and fixed, the central hole (22) is in a slightly downward mode, the end arm (12) is inserted into the central hole (22), and the frame hanging body can reliably present an ideal horizontal state or a slightly upward state, and the view is shown in figures 11 a-b. Although the above problem can be solved, the thickness of the square plate of the main seat (2) is gradually increased from top to bottom, which is not directly related to the design patent itself.

Example 3. The bolt head (121) is removed from the end arm, the umbrella can still be hung on the cross rod (11) of the hanging frame body, the hanging frame body is not locked when being plugged into the main seat, but the weight of the umbrella hung in a centralized manner is helpful for keeping the hanging frame body plugged into the central hole of the main seat. The same as in example 2.

It is also worth mentioning that:

① in this design, the locking of the main socket end face 223 to the inner end arm 12 inserted into the central hole 22 is a sufficient but easily releasable 'half lock'. the end arm bolt head 121 is not limited to the bottom surface of the end arm 12 shown in the drawings, as will have acceptable application on the other side surfaces of the end arm, but is still appropriate for the simplicity of appearance and operation, as shown in fig. 3 a-b.

② the side door is partially different from the top door, and the face covers of fig. 6a and 10a are also partially different.

③ compared with Chinese patent 201420858797.4, the side door and the top door closing the central hole of the socket are pushed open with the insertion of the end arm (12), the insertion state of the end arm is locked, the flat end state of the hanging frame when the cross bar (11) hangs the umbrella is naturally presented, the central hole (22) of the main seat is automatically closed by the side door (6) or the top door (7) when the umbrella is not hung, the mode that the side door (6) and the top door (7) are selected to rotate and retract in the central hole (22) is favorable for anti-disassembly and anti-damage, and the improvement performance of the umbrella hanging rack is realized.

Claims (3)

1. The umbrella hanging rack for the school classroom comprises a hanging frame body composed of a cross rod, a left end arm and a right end arm, a left main seat and a right main seat which are fixed on a wall vertical surface at equal height, wherein a convex column body extending behind the middle part of the main seat comprises a central hole for inserting an end arm, and the umbrella hanging rack is characterized by also comprising one of the following structures:

① an upper concave area and a lower concave area are arranged on one side of the front opening of the central hole of the main seat, each main seat corresponds to a hole sealing component A composed of a side door, a torsion spring and a steel shaft, the steel shaft is connected with the torsion spring in a penetrating way and is hooked by a U-shaped hook of the side door, the upper end and the lower end of the steel shaft are respectively embedded into the upper concave area and the lower concave area, and the surface cover and the main seat are fixedly buckled through a micro-hook and a concave buckle correspondingly contained;

② A special-shaped concave area is arranged on the front side of the central hole of the main seat, each main seat corresponds to a hole sealing component B composed of a top door and a steel shaft, the steel shaft is hooked by the U-shaped hook of the top door, the left end and the right end of the steel shaft are respectively embedded into the left end and the right end of the special-shaped concave area, and the surface cover and the main seat are fixedly fastened by the corresponding micro-hooks and the concave buckles.

2. The umbrella hanging rack for school classrooms as claimed in claim 1, which is characterized in that: at least one of the side door, the top door or the side door with the width larger than the width of the middle opening of the surface cover, or the side door with the height larger than the height of the middle opening of the surface cover, or the side door with the area larger than the area of the middle opening of the surface cover is formed.

3. The umbrella hanging rack for school classrooms as claimed in claim 1, which is characterized in that: the center hole of the convex cylinder of the main seat is provided with a bottom groove, and the side surface of the end arm is provided with a bolt head hung in the bottom groove.

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