Hand alarm

Abstract

The utility model relates to a hand-cranking alarm comprising a transmission case, the side surface of the transmission case is in transmission connection with an alarm assembly, the periphery of the alarm assembly is provided with an alarm housing, the circumference of one side of the transmission case close to the alarm housing is provided with a plurality of spacing grooves, and the alarm housing is provided with connecting blocks corresponding to the spacing grooves one by one. The side, away from the alarm shell, of the connecting block is provided with an inverted buckle, the inverted buckle can rotate in the limiting grooves, the inner wall of each limiting groove is provided with a buckle connected with the inverted buckle in a clamped mode, a sliding groove is formed in one limiting groove, the interior of the sliding groove is elastically and slidably connected with a limiting block, and the limiting block is used for preventing the inverted buckle from rotating away from the position where the inverted buckle is connected with the buckle in a clamped mode. A push rod used for driving the limiting block to retract into the sliding groove is arranged outside the transmission box. In the process of detaching the alarm shell from the transmission case, time and labor are saved, and the maintenance time and workload of maintenance personnel are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to an alarm technical field, concretely relates to a hand alarm. BACKGROUND

[0002] The hand alarm does not need power supply, can provide an effective alarm in the place without power supply support, only needs to shake the handle in the clockwise direction by hand, and the ideal alarm effect can be reached when the speed reaches the primary.

[0003] The existing hand alarm includes a transmission box and an alarm shell installed on the side of the transmission box, the alarm shell is mostly installed on the transmission box in a screw fixing mode, when the alarm component in the alarm shell needs to be repaired due to failure, the maintenance personnel needs to remove the screws one by one by hand, thereby increasing the maintenance time and workload of the maintenance personnel. UTILITY MODEL CONTENT

[0004] The utility model aims at designing a hand alarm, so that the problems mentioned in the background art can be solved.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme.

[0006] A hand alarm, including transmission box, the side of transmission box is connected with alarm component, the outer circle of alarm component is equipped with alarm shell, the side circumference of transmission box near alarm shell is equipped with a plurality of limiting slot, alarm shell is equipped with the connecting block corresponding with limiting slot, the side of connecting block away from alarm shell is equipped with the reverse buckle, the reverse buckle can rotate in the inside of limiting slot, the inner wall of limiting slot is equipped with the buckle joint with reverse buckle, the inside of one limiting slot is equipped with the sliding slot, the inside of sliding slot is elastically connected with the limiting block, the limiting block is used for preventing reverse buckle from rotating away from the position of buckle joint, the outside of transmission box is equipped with the push rod for driving limiting block to retract in the inside of sliding slot.

[0007] Further, the inside of the sliding slot is provided with a spring, one end of the spring is fixedly connected with the inside of the sliding slot away from the limiting slot, and the other end is fixedly connected with the limiting block.

[0008] Further, the side wall of the transmission box is provided with a sliding hole corresponding to the sliding slot, and one end of the push rod is fixedly connected with the side surface of the limiting block through the sliding hole.

[0009] Further, one end of the push rod is fixedly connected with a pressing plate.

[0010] Further, the side wall of the alarm shell is provided with a first air port, and the side of the alarm shell away from the transmission box is provided with a second air port.

[0011] Further, the outer periphery of the alarm shell is provided with a dustproof shell, and the side wall of the transmission box is provided with an annular recess engaging with the inner wall of the dustproof shell.

[0012] Still further, the inner wall of the dustproof shell is fixedly connected with a rubber ring in contact with the annular recess.

[0013] Further, the top of the transmission box is fixedly connected with a handrail.

[0014] Further, the bottom of the transmission box is fixedly connected with a support seat.

[0015] Further, the side of the transmission box away from the alarm shell is rotatably connected with a crank handle.

[0016] The utility model discloses beneficial effect is:

[0017] Through the clamping of the reverse buckle and the buckle, the alarm shell can be installed on the transmission box, when the alarm shell needs to be disassembled, the push rod drives the limiting block to retract into the inside of the sliding slot, after losing the blocking effect of the limiting block, the reverse buckle can rotate in the inside of the limiting slot to leave the position of clamping with the buckle, then the alarm shell can be disassembled from the transmission box, which saves time and effort, reduces the maintenance time and workload of maintenance personnel. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0019] Figure 1 It is the structural schematic diagram of the utility model;

[0020] Figure 2 It is the structural schematic diagram of the utility model after opening the dustproof shell;

[0021] Figure 3 It is the structural schematic diagram of the utility model when the alarm shell is disassembled from the transmission box;

[0022] Figure 4 It is the structural schematic diagram of the utility model when the reverse buckle and the buckle clamp;

[0023] Figure 5It is the structure schematic view that the reverse buckle is away from the clamping position in the limiting groove in the utility model.

[0024] Figure 6 It is the sectional view that the limiting block is stretched out outside the sliding groove in the utility model.

[0025] Figure 7 It is the sectional view that the limiting block is retracted inside the sliding groove in the utility model.

[0026] The names of the components marked in the drawing are as follows:

[0027] 1, transmission case;2, alarm shell;3, limiting groove;4, connecting block;5, reverse buckle;6, buckle;7, sliding groove;8, limiting block;9, push rod;10, spring;11, sliding hole;12, pressing plate;13, first air port;14, second air port;15, dustproof shell;16, annular recess;17, rubber ring;18, handrail;19, support seat;20, crank. DETAILED DESCRIPTION

[0028] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model are described in detail as follows in combination with the drawings and preferred embodiments.

[0029] As shown in Figures 1-7 A hand alarm, comprising a transmission case 1, the side of the transmission case 1 is transmissionally connected with an alarm assembly (not shown in the drawing), the outer periphery of the alarm assembly is provided with an alarm shell 2, the side of the transmission case 1 close to the alarm shell 2 is circumferentially distributed with a plurality of limiting grooves 3, the alarm shell 2 is provided with connecting blocks 4 corresponding to the limiting grooves 3 one by one, the side of the connecting block 4 away from the alarm shell 2 is provided with a reverse buckle 5, the reverse buckle 5 can rotate inside the limiting groove 3, the inner wall of the limiting groove 3 is provided with a buckle 6 clamped with the reverse buckle 5, through the rotation of the reverse buckle 5, the reverse buckle 5 can enter or leave the clamped position;The inside of one of the limiting grooves 3 is provided with a sliding groove 7, the inside of the sliding groove 7 is slidingly matched with a limiting block 8, when the limiting block 8 is in the state of stretching out outside the sliding groove 7, the limiting block 8 can hinder the reverse buckle 5 to rotate away from the position clamped with the buckle 6, the inside of the sliding groove 7 is provided with a spring 10, one end of the spring 10 is fixedly connected with the inside of the sliding groove 7 away from the limiting groove 3, the other end is fixedly connected with the limiting block 8, when external force is applied to the limiting block 8, the limiting block 8 can be retracted inside the sliding groove 7, after losing the effect of external force, the elastic effect of the spring 10 can make the limiting block 8 return to the original position;

[0030] The outer part of the transmission box 1 is provided with a push rod 9, and the side wall of the transmission box 1 is provided with a sliding hole 11 corresponding to the sliding groove 7. One end of the push rod 9 is fixedly connected with the side surface of the limiting block 8 through the sliding hole 11. By pushing the push rod 9, the limiting block 8 can be retracted into the inside of the sliding groove 7. The other end of the push rod 9 away from the limiting block 8 is fixedly connected with a pressing plate 12, which increases the contact area and makes it easier to push the push rod 9.

[0031] The side wall of the alarm shell 2 is provided with a first air inlet 13, and the side of the alarm shell 2 away from the transmission box 1 is provided with a second air inlet 14. The outer periphery of the alarm shell 2 is provided with a dustproof shell 15. When the hand-operated alarm is idle, dust can be prevented from entering the inside of the alarm shell 2 through the first air inlet 13 or the second air inlet 14, avoiding affecting the work of the alarm assembly. The side wall of the transmission box 1 is provided with an annular recess 16 engaged with the inner wall of the dustproof shell 15. The inner wall of the dustproof shell 15 is fixedly connected with a rubber ring 17 in contact with the annular recess 16, which increases the sealing performance and the stability of the dustproof shell 15 on the transmission box 1 through the tensioning effect of the rubber ring 17.

[0032] The top of the transmission box 1 is fixedly connected with a handrail 18, and the bottom of the transmission box 1 is fixedly connected with a support seat 19. The side of the transmission box 1 away from the alarm shell 2 is rotatably connected with a handle 20.

[0033] Working principle:

[0034] As shown in Figures 3-7 When it is necessary to disassemble the alarm shell 2, the pressing plate 12 is pressed down. The pressing plate 12 drives the limiting block 8 to retract completely into the inside of the sliding groove 7 through the push rod 9. After losing the blocking effect of the limiting block 8, the alarm shell 2 can be disassembled from the transmission box 1 by rotating the alarm shell 2 to drive the inverted buckle 5 to rotate in the inside of the limiting groove 7 to leave the position of clamping with the buckle 6, which saves time and effort and reduces the maintenance time and workload of maintenance personnel.

[0035] When it is necessary to install the alarm shell 2, the inverted buckle 5 of the alarm shell 2 is aligned with the corresponding limiting groove 7 and is put in. One of the inverted buckles 5 will push the limiting block 8 to move, so that the limiting block 8 retracts into the inside of the sliding groove 7. After the limiting block 8 retracts completely into the limiting groove 7, the alarm shell 2 can be rotated. During the retraction of the limiting block 8 into the limiting groove 7, the spring 10 is in a compressed state. The alarm shell 2 can drive the inverted buckle 5 to rotate in the inside of the limiting groove 7 to enter the position of clamping with the buckle 6. After the inverted buckle 5 enters the clamping position, the limiting block 8 loses the external force effect. The elastic effect of the spring 10 can make the limiting block 8 return to the original position, so that the limiting block 8 can block the inverted buckle 5 from leaving the clamping position, thereby fixing the alarm shell 2 on the transmission box 1.

[0036] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with preferred embodiments, it is not intended to limit the present application. Any person skilled in the art can make minor changes or modifications to the disclosed technical content, or make equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any modification, equivalent change or modification of the above embodiments, which does not depart from the technical solution of the present application, is still within the scope of the technical solution of the present application.

Claims

1. A hand-cranked alarm, comprising a transmission box (1), a side of the transmission box (1) is transmissionally connected with an alarm assembly, an outer periphery of the alarm assembly is provided with an alarm shell (2), characterized in that, The transmission box (1) is close to the side circumference of the alarm shell (2) and is distributed with a plurality of limiting grooves (3), the alarm shell (2) is provided with a connecting block (4) corresponding to the limiting groove (3), the connecting block (4) is provided with a reverse buckle (5) away from the alarm shell (2), the reverse buckle (5) can rotate inside the limiting groove (3), the inner wall of the limiting groove (3) is provided with a buckle (6) clamped with the reverse buckle (5), one of the limiting grooves (3) is provided with a sliding groove (7), the sliding groove (7) is elastically connected with a limiting block (8) inside, the limiting block (8) is used for preventing the reverse buckle (5) from rotating away from the position clamped with the buckle (6), the transmission box (1) is provided with a push rod (9) for driving the limiting block (8) to retract into the sliding groove (7).

2. The hand-cranked alarm of claim 1, wherein, The inside of the sliding groove (7) is provided with a spring (10), one end of the spring (10) is fixedly connected with the inside of the sliding groove (7) away from the limiting groove (3), and the other end is fixedly connected with the limiting block (8).

3. The hand-cranked alarm of claim 1, wherein, The side wall of the transmission box (1) is provided with a sliding hole (11) corresponding to the sliding groove (7), one end of the push rod (9) is fixedly connected with the side surface of the limiting block (8) through the sliding hole (11).

4. The hand-cranked alarm of claim 1, wherein, One end of the push rod (9) is fixedly connected with a pressing plate (12).

5. The hand-cranked alarm of claim 1, wherein, The side wall of the alarm shell (2) is provided with a first air port (13), and the side of the alarm shell (2) away from the transmission box (1) is provided with a second air port (14).

6. The hand-cranked alarm of claim 1, wherein, The outer periphery of the alarm shell (2) is provided with a dustproof shell (15), and the side wall of the transmission box (1) is provided with an annular recess (16) engaged with the inner wall of the dustproof shell (15).

7. The hand-cranked alarm of claim 6, wherein, The inner wall of the dustproof shell (15) is fixedly connected with a rubber ring (17) in contact with the annular recess (16).

8. The hand-cranked alarm of claim 1, wherein, The top of the transmission box (1) is fixedly connected with a handrail (18).

9. The hand-cranked alarm of claim 1, wherein, The bottom of the transmission box (1) is fixedly connected with a support seat (19).

10. The hand-cranked alarm of claim 1, wherein, The side of the transmission box (1) away from the alarm shell (2) is rotatably connected with a crank handle (20).

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