CN111643119A - Percussion hammer device for department of pediatrics - Google Patents

Abstract

The invention discloses a percussion hammer device for a pediatric internal medicine, which comprises a first handle, a storage battery and a motor, wherein the storage battery is arranged in the bottom end of the first handle, the motor is arranged in the center of the first handle, the output end of the motor is connected with a first rotating shaft, and one end of the first rotating shaft, which is far away from the motor, is fixedly connected with a first rotating disc. According to the invention, the fixed rotating wheel and the second moving rod are arranged, the knocking head can move in the second handle through the rotation of the fixed rotating wheel, so that the knocking head can accurately knock the limb of a patient, the knocking force can be conveniently controlled through the movement of the second moving rod, the limiting rod is arranged, the second handle is inserted in the first fixed frame through the second handle inserted in the first fixed frame, so that the second handle is limited in the first fixed frame, the first handle and the second handle can be effectively conveniently disassembled and assembled, and the first handle can be conveniently carried integrally.

Description

Percussion hammer device for department of pediatrics

Technical Field

The invention relates to the technical field of percussion hammers, in particular to a percussion hammer device for a pediatric internal medicine.

Background

The pediatric internal medicine belongs to the subject of clinical medicine, is a medical science for researching the growth and development rule of children to adolescents, improving the physical and mental health level of the children to the adolescents and improving the quality of disease prevention and treatment, wherein a percussion hammer is a medical instrument commonly used in the pediatric internal medicine, is an instrument used by doctors for checking the neuromuscular reflex, and is mainly composed of an eraser and a wood or metal handle, and when the percussion hammer is used, the rubber end is used for lightly tapping the relevant part to observe the neuromuscular reflex.

Because current percussion hammer single structure, when the percussion hammer is using, need the doctor to hand and strike, nevertheless the doctor when striking, makes the percussion hammer take place to be crooked easily to lead to the doctor to need to strike many times repeatedly and just can diagnose, consequently need a percussion hammer device for the department of children to solve above-mentioned problem urgently.

Disclosure of Invention

The invention aims to solve the problems that the structure of a percussion hammer in the prior art is single, when the percussion hammer is used, a doctor needs to hold the percussion hammer by hand to perform percussion, but the percussion hammer is easy to be inclined when the doctor performs percussion, so that the doctor needs to perform diagnosis by repeatedly knocking for many times, and provides a percussion hammer device for a pediatric internal medicine.

In order to achieve the purpose, the invention adopts the following technical scheme:

a percussion hammer device for department of children comprises a first handle, a storage battery and a motor, wherein the storage battery is arranged inside the bottom end of the first handle, the motor is arranged at the center of the first handle, the output end of the motor is connected with a first rotating shaft, one end of the first rotating shaft, which is far away from the motor, is fixedly connected with a first rotating disc, the top end of the first handle is fixedly connected with a first fixing frame, the surface of the first fixing frame is fixedly connected with a second fixing frame, a first rotating rod is inserted inside the second fixing frame, one end surface of the first rotating rod, which is inserted inside the second fixing frame, is abutted against the inner wall of a limiting rod, the surface of the limiting rod is fixedly connected with a first sliding block, one end of the limiting rod, which is close to the first sliding block, is fixedly connected with a first spring, one end of the limiting rod, which is far away from the first sliding, a fixed plate is fixedly connected to the surface of the second handle, a second rotating rod is inserted into the fixed plate and is mounted on a first connecting rod through a bearing, a third connecting rod is fixedly connected to one end, far away from the second rotating rod, of the first connecting rod, a fixed rod is fixedly connected to one end, far away from the first connecting rod, of the third connecting rod, the surface of one end, far away from the third connecting rod, of the fixed rod is abutted to the surface of the first moving rod, a second rotating disc is fixedly connected to the bottom end of the first moving rod, a second sliding block is fixedly connected to one end, far away from the second rotating disc, of the first moving rod, of the second sliding block is inserted into the second rotating shaft, a first conical gear is fixedly connected to one end, far away from the first moving rod, of the second rotating shaft, and the surface of the first conical gear is meshed with the surface of the second conical gear, the fixed axle has been cup jointed to the inside of second conical gear, and the central point of fixed axle puts the department and cup joints fixed runner, the surface of fixed runner is inconsistent with the surface of knocking the head, and the fixed surface of knocking the head is connected with the third slider, the fixed frame of top fixed surface of second handle is connected with the third, it inserts the first limiting plate of one end fixedly connected with who establishes in the fixed frame inside of third to knock the head, and the first limiting plate keeps away from the one end surface of knocking the head and the surface of second limiting plate is inconsistent, the one end fixed surface that first limiting plate was kept away from to the second limiting plate is connected with the second spring, and the one end fixedly connected with second carriage release lever that the second limiting plate was kept away from to the second spring, the one end fixedly connected with second connecting rod that the second spring was kept away from to the second carriage release lever, and the inside of second connecting rod is inserted and.

Preferably, the first rotary table is of a circular structure, the first rotary table is provided with a groove inside, the second rotary table is of a circular structure, the surface of the second rotary table is provided with a protruding block, and the size of the inner wall of the groove formed in the first rotary table is larger than the size of the surface of the protruding block arranged on the surface of the second rotary table.

Preferably, the second fixed frame is provided with two sliding grooves therein, and the two sliding blocks form a sliding structure together with the two sliding grooves provided therein.

Preferably, the surface of the first rotating rod is provided with an external thread, the inside of the second fixing frame is provided with a through hole, the inner wall of the through hole is provided with an internal thread, and the internal thread arranged on the inner wall of the through hole is matched with the external thread arranged on the surface of the first rotating rod for use.

Preferably, the limiting rod is cylindrical, a groove is formed in the bottom end of the second handle, and the surface size of the limiting rod is smaller than the size of the inner wall of the groove formed in the bottom end of the second handle.

Preferably, the top end of the second handle is internally provided with two sliding grooves, the three sliding blocks are provided with two groups, and the sliding grooves formed in the top end of the second handle and the two groups of the third sliding blocks form a sliding structure.

Preferably, the first moving rod is cylindrical, a groove is formed in the surface of the first moving rod, and the size of the surface of the fixed rod is smaller than the size of the inner wall of the groove formed in the surface of the first moving rod.

Preferably, the second sliding blocks are provided with two groups, sliding grooves are formed in the inner wall of the second rotating shaft, and the sliding structures are formed by the two groups of second sliding blocks and the sliding grooves formed in the inner wall of the second rotating shaft.

Preferably, the fixed rotating wheel is of a circular structure, a half circle of teeth are arranged on the surface of the fixed rotating wheel, teeth are arranged at the bottom end of the knocking head, and the half circle of teeth arranged on the surface of the fixed rotating wheel are meshed with the teeth arranged on the surface of the bottom end of the knocking head.

Compared with the prior art, the invention has the beneficial effects that: through being provided with fixed runner and second carriage release lever, rotation through fixed runner, can make the head of striking move in the inside of second handle, thereby can be convenient for strike the head can be accurate strike patient's limbs, and the removal through the second carriage release lever, can be convenient for adjust the elasticity of second spring self, the dynamics of conveniently controlling the strike, thereby can be convenient for the use of the first in command, through being provided with the gag lever post, insert the inside of establishing at first fixed frame through the second handle, and through the rotation of first carriage release lever, can make the gag lever post insert the inside of establishing at the second handle, thereby can make the second handle spacing in the inside of first fixed frame, the effectual dismantlement equipment of the first in command and the second in command of being convenient for, be convenient for the holistic carrying of the first in command.

1. The device can drive the first bevel gear to rotate through the second rotating shaft and drive the second bevel gear to rotate through the first bevel gear by arranging the fixed rotating wheel and the second moving rod, so that the fixed rotating wheel can rotate, when the fixed rotating wheel rotates, the knocking head can move in the second handle, when the knocking head moves, the first limiting plate can push the second limiting plate to move, so that the second limiting plate can drive the second spring to be in a contraction state, when teeth arranged on the surface of the fixed rotating wheel are far away from the surface of the knocking head, the knocking head can be pushed to move through the self elastic force of the second spring, so that the knocking head can accurately knock the limb of a patient, and the second moving rod can move in the third fixed frame by rotating the third rotating rod, so that the knocking strength can be conveniently controlled, facilitating use of the first handle;

2. the device is through being provided with the gag lever post, through inserting the second handle and establishing the inside at first fixed frame, and through rotating first bull stick, can make first bull stick remove in the inside of the fixed frame of second, the removal through first bull stick can promote the gag lever post and insert the inside of establishing at the second handle, can be spacing the inside at first fixed frame with the second handle, thereby can effectually be convenient for the first in command and the dismantlement equipment of second handle, be convenient for the holistic carrying of the first in command.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic sectional elevation view of the structure of the present invention;

FIG. 2 is a schematic top cross-sectional view of the structure of the present invention;

FIG. 3 is a schematic top view of a second bevel gear and fixed runner arrangement of the present invention;

FIG. 4 is a schematic top view of the fixing rod and the third connecting rod structure of the present invention;

FIG. 5 is a schematic cross-sectional side view of the first rotating rod and the first spring structure of the present invention;

FIG. 6 is a schematic top view of a first turntable structure of the present invention;

FIG. 7 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

fig. 8 is an enlarged view of the structure at B in fig. 1 according to the present invention.

In the figure: 1. a first handle; 2. a storage battery; 3. a motor; 4. a first rotating shaft; 5. a first turntable; 6. a first fixed frame; 7. a second fixed frame; 8. a first rotating lever; 9. a limiting rod; 10. a first slider; 11. a first spring; 12. a second handle; 13. a fixing plate; 14. a second rotating rod; 15. a first connecting rod; 16. fixing the rod; 17. a first movable bar; 18. a second turntable; 19. a second slider; 20. a second rotating shaft; 21. a first bevel gear; 22. a second bevel gear; 23. a fixed shaft; 24. fixing the rotating wheel; 25. a knocking head; 26. a third slider; 27. a first limit plate; 28. a second limiting plate; 29. a second spring; 30. a second movable bar; 31. a second connecting rod; 32. a third rotating rod; 33. a third fixed frame; 34. and a third connecting rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 8, the present invention provides a technical solution: a percussion hammer device for department of children comprises a first handle 1, a storage battery 2 and a motor 3, wherein the storage battery 2 is arranged inside the bottom end of the first handle 1, the motor 3 is arranged at the central position of the first handle 1, the output end of the motor 3 is connected with a first rotating shaft 4, one end of the first rotating shaft 4, which is far away from the motor 3, is fixedly connected with a first rotating disc 5, a first fixing frame 6 is fixedly connected with the surface of the top end of the first handle 1, a second fixing frame 7 is fixedly connected with the surface of the first fixing frame 6, a first rotating rod 8 is inserted inside the second fixing frame 7, the surface of the first rotating rod 8 is provided with an external thread, a through hole is formed inside the second fixing frame 7, the inner wall of the through hole is provided with an internal thread, the internal thread arranged on the inner wall of the through hole is matched with the external thread arranged on the surface, when the first rotating rod 8 rotates, the first rotating rod 8 can move in the second fixing frame 7, so that the first rotating rod 8 can push the limiting rod 9 to move, the disassembly and assembly of the first handle 1 and the second handle 12 are effectively facilitated, the surface of one end, inserted in the second fixing frame 7, of the first rotating rod 8 is abutted against the inner wall of the limiting rod 9, the surface of the limiting rod 9 is fixedly connected with a first sliding block 10, the inside of the second fixing frame 7 is provided with two groups of sliding grooves, the two groups of sliding grooves formed in the second fixing frame 7 and the two groups of first sliding blocks 10 form a sliding structure, the first sliding block 10 slides in the sliding groove formed in the second fixing frame 7 to limit the limiting rod 9, the surface of one end, close to the first sliding block 10, of the limiting rod 9 is fixedly connected with a first spring 11, the end, far away from the first sliding block 10, of the limiting rod 9 is inserted in the inside of the second handle 12, the gag lever post 9 sets up to cylindrical, the inside recess of having seted up in bottom of second handle 12, the surface dimension size of gag lever post 9 is less than the inside recess inner wall size of seting up in second handle 12 bottom, through the inside recess of seting up in second handle 12 bottom, can make gag lever post 9 insert the inside of establishing at the recess, thereby can play the effect of spacing second handle 12, the effectual assembly and disassembly of the first in command 1 with second handle 12 of being convenient for, and the fixed surface of second handle 12 is connected with fixed plate 13, the inside of fixed plate 13 is inserted and is equipped with second bull stick 14, and second bull stick 14 passes through the bearing and installs at head rod 15, the one end fixedly connected with third connecting rod 34 that second bull stick 14 was kept away from to head rod 15, and the one end fixedly connected with dead lever 16 of head rod 15 is kept away from to third connecting rod 34.

The surface of one end of the fixed rod 16 far away from the third connecting rod 34 is abutted against the surface of the first moving rod 17, the first moving rod 17 is cylindrical, the surface of the first moving rod 17 is provided with a groove, the size of the surface size of the fixed rod 16 is smaller than the size of the inner wall of the groove formed on the surface of the first moving rod 17, the fixed rod 16 can be clamped in the groove formed on the surface of the first moving rod 17, the fixed rod 16 can drive the first moving rod 17 to move conveniently, the bottom end of the first moving rod 17 is fixedly connected with a second turntable 18, the first turntable 5 is of a circular structure, the groove formed in the first turntable 5 is provided with a circular structure, the second turntable 18 is of a circular structure, the surface of the second turntable 18 is provided with a convex block, the size of the inner wall of the groove formed in the first turntable 5 is larger than the size of the surface of the convex block formed on the surface of the second, the second rotary table 18 can be clamped in the first rotary table 5 through the convex block arranged on the surface of the second rotary table 18, so that the first rotary table 5 can drive the second rotary table 18 to rotate, one end of the first movable rod 17 far away from the second rotary table 18 is fixedly connected with the second slide block 19, one end of the second slide block 19 far away from the surface of the first movable rod 17 is inserted in the second rotary shaft 20, the second slide blocks 19 are provided with two groups, the inner wall of the second rotary shaft 20 is provided with slide grooves, the two groups of second slide blocks 19 and the slide grooves arranged on the inner wall of the second rotary shaft 20 form a slide type structure, the second slide block 19 slides in the slide grooves arranged in the second rotary shaft 20, so that the effect of limiting the first movable rod 17 can be achieved, the first movable rod 17 can be effectively and conveniently stretched in the second rotary shaft 20, one end of the second rotary shaft 20 far away from the first movable rod 17 is fixedly connected with the first conical gear 21, the surface of the first bevel gear 21 is engaged with the surface of the second bevel gear 22, the inner portion of the second bevel gear 22 is sleeved with the fixed shaft 23, the central position of the fixed shaft 23 is sleeved with the fixed rotating wheel 24, the surface of the fixed rotating wheel 24 is abutted to the surface of the knocking head 25, the fixed rotating wheel 24 is arranged in a circular structure, the surface of the fixed rotating wheel 24 is provided with a half circle of teeth, the bottom end of the knocking head 25 is provided with teeth, the half circle of teeth arranged on the surface of the fixed rotating wheel 24 are engaged with the teeth arranged on the surface of the bottom end of the knocking head 25, the knocking head 25 can move in the inner portion of the second handle 12 when the fixed rotating wheel 24 rotates, meanwhile, when the half circle of teeth arranged on the surface of the fixed rotating wheel 24 is far away from the surface of the knocking head 25, the knocking head 25 can be reset, so that the knocking head 25 can knock the limbs of a patient conveniently, the surface of the knocking head 25 is fixedly connected with a third slide block 26, the top end of the second handle 12 is provided with two sets of slide grooves, the third slide block 26 is provided with two sets, the slide grooves arranged in the top end of the second handle 12 and the two sets of third slide blocks 26 form a sliding type structure, the third slide block 26 slides in the slide grooves arranged in the second handle 12 to play a role of limiting the knocking head 25, the top end surface of the second handle 12 is fixedly connected with a third fixed frame 33, one end of the knocking head 25 inserted in the third fixed frame 33 is fixedly connected with a first limiting plate 27, the surface of one end of the first limiting plate 27 far away from the knocking head 25 is abutted against the surface of the second limiting plate 28, the surface of one end of the second limiting plate 28 far away from the first limiting plate 27 is fixedly connected with a second spring 29, and the end of the second spring 29 far away from the second limiting plate 28 is fixedly connected with a second moving rod 30, a second connecting rod 31 is fixedly connected to one end of the second moving rod 30 away from the second spring 29, and a third rotating rod 32 is inserted into the second connecting rod 31.

The working principle is as follows: when the first handle 1 and the second handle 12 need to be organized and disassembled, according to the attached drawings 1, 5 and 7, the second handle 12 is inserted into the first fixing frame 6, the first rotating rod 8 can be moved in the second fixing frame 7 by rotating the first rotating rod 8, the first rotating rod 8 can drive the limiting rod 9 to move, when the limiting rod 9 is inserted into the second handle 12, the second handle 12 can be limited in the first fixing frame 6, when the second handle 12 needs to be taken out from the first fixing frame 6, the first rotating rod 8 can be rotated to be far away from the inside of the limiting rod 9, at the same time, the limiting rod 9 can be retracted into the inside of the second fixing frame 7 by the self elasticity of the first spring 11, so that the limiting rod 9 can be far away from the inside of the second handle 12, at the same time, the second handle 12 can be taken out from the inside of the first fixing frame 6, when the tapping head 25 is used, according to fig. 1, fig. 2, fig. 3, fig. 4, fig. 6 and fig. 8, when the second handle 12 is assembled with the first handle 1, the first rotating shaft 4 and the first rotating disc 5 are inserted into the second handle 12, then the first connecting rod 15 can be pushed to move by rotating the second rotating rod 14, the third connecting rod 34 can be driven to move by the movement of the first connecting rod 15, so that the third connecting rod 34 can drive the fixed rod 16 to move, when the fixed rod 16 moves, the first moving rod 17 can be moved telescopically inside the second rotating shaft 20, when the first moving rod 17 drives the second rotating disc 18 to be inserted into the first rotating disc 5, the first rotating shaft 4 can drive the first moving rod 17 to rotate, so that the first bevel gear 21 can be rotated, and when the first bevel gear 21 rotates the second bevel gear 22, when the second bevel gear 22 rotates, the fixed rotating wheel 24 can be driven to rotate by the fixed shaft 23, when the fixed rotating wheel 24 rotates, the knocking head 25 can move inside the second handle 12, the knocking head 25 can drive the first limiting plate 27 to move by the movement of the knocking head 25, when the second limiting plate 28 is driven to move by the first limiting plate 27, the second spring 29 can be in a contracted state, when a half circle of teeth arranged on the surface of the fixed rotating wheel 24 are far away from the surface of the knocking head 25, the knocking head 25 can be reset by the elastic force of the second spring 29, so that the limb of a patient can be knocked, when the knocking force needs to be adjusted, the second connecting rod 31 can move on the surface of the third rotating rod 32 by rotating the third rotating rod 32, the second moving rod 30 can be driven to move inside the third fixed frame 33 by the second connecting rod 31, so that the first limiting plate 27 can be driven by the second spring 29 to move, the invention is convenient for adjusting the knocking force, and the above is the whole working principle of the invention.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (9)

1. The utility model provides a percussion hammer device for department of pediatrics, includes first in command (1), battery (2) and motor (3), its characterized in that: the bottom internally mounted of the first handle (1) has a storage battery (2), the center position of the first handle (1) is provided with a motor (3), the output end of the motor (3) is connected with a first rotating shaft (4), one end of the first rotating shaft (4) far away from the motor (3) is fixedly connected with a first rotating disc (5), the top end surface of the first handle (1) is fixedly connected with a first fixed frame (6), the surface of the first fixed frame (6) is fixedly connected with a second fixed frame (7), the inside of the second fixed frame (7) is inserted with a first rotating rod (8), the first rotating rod (8) is inserted into one end surface inside the second fixed frame (7) and is abutted against the inner wall of the limiting rod (9), the surface of the limiting rod (9) is fixedly connected with a first sliding block (10), one end surface of the limiting rod (9) close to the first sliding block (10) is fixedly connected with a first spring (11), one end, far away from the first sliding block (10), of the limiting rod (9) is inserted into the second handle (12), a fixing plate (13) is fixedly connected to the surface of the second handle (12), a second rotating rod (14) is inserted into the fixing plate (13), the second rotating rod (14) is installed on a first connecting rod (15) through a bearing, a third connecting rod (34) is fixedly connected to one end, far away from the second rotating rod (14), of the first connecting rod (15), a fixing rod (16) is fixedly connected to one end, far away from the first connecting rod (15), of the third connecting rod (34) of the fixing rod (16) and the surface of the first moving rod (17) are in contact, a second rotating disc (18) is fixedly connected to the bottom end of the first moving rod (17), far away from the second rotating disc (18) of the first moving rod (17), and a second sliding block (19) is fixedly connected to one end, far away from the second rotating disc (18), of the first moving rod (17), one end, far away from the surface of the first moving rod (17), of the second sliding block (19) is inserted into the second rotating shaft (20), one end, far away from the surface of the first moving rod (17), of the second rotating shaft (20) is fixedly connected with a first bevel gear (21), the surface of the first bevel gear (21) is meshed with the surface of a second bevel gear (22), a fixed shaft (23) is sleeved inside the second bevel gear (22), a fixed rotating wheel (24) is sleeved at the central position of the fixed shaft (23), the surface of the fixed rotating wheel (24) is abutted to the surface of the knocking head (25), a third sliding block (26) is fixedly connected to the surface of the knocking head (25), a third fixed frame (33) is fixedly connected to the top end surface of the second handle (12), and one end, inserted into the third fixed frame (33), of the knocking head (25) is fixedly connected with a first limiting plate (27), and the first limiting plate (27) is kept away from the surface of the one end surface of knocking head (25) and the surface of second limiting plate (28) inconsistent, the one end fixed surface that first limiting plate (27) were kept away from in second limiting plate (28) is connected with second spring (29), and second spring (29) keeps away from one end fixedly connected with second carriage release lever (30) of second limiting plate (28), the one end fixedly connected with second connecting rod (31) of second spring (29) is kept away from in second carriage release lever (30), and the inside of second connecting rod (31) is inserted and is equipped with third bull stick (32).

2. The percussion hammer device for department of pediatrics of claim 1, wherein: the first rotary table (5) is of a circular structure, a groove is formed in the first rotary table (5), the second rotary table (18) is of a circular structure, a protruding block is arranged on the surface of the second rotary table (18), and the size of the inner wall of the groove formed in the first rotary table (5) is larger than the size of the surface of the protruding block arranged on the surface of the second rotary table (18).

3. The percussion hammer device for department of pediatrics of claim 1, wherein: the sliding structure is characterized in that sliding grooves are formed in the second fixing frame (7), two groups of first sliding blocks (10) are arranged, and the sliding grooves formed in the second fixing frame (7) and the two groups of first sliding blocks (10) form a sliding structure.

4. The percussion hammer device for department of pediatrics of claim 1, wherein: the surface of first bull stick (8) is provided with the external screw thread, the through-hole has been seted up to the inside of the fixed frame of second (7), and the inner wall of through-hole is provided with the internal thread, the internal thread that the through-hole inner wall set up cooperatees with the external screw thread that first bull stick (8) surface set up and uses.

5. The percussion hammer device for department of pediatrics of claim 1, wherein: the limiting rod (9) is cylindrical, a groove is formed in the bottom end of the second handle (12), and the surface size of the limiting rod (9) is smaller than the size of the inner wall of the groove formed in the bottom end of the second handle (12).

6. The percussion hammer device for department of pediatrics of claim 1, wherein: the top end of the second handle (12) is internally provided with two sliding grooves, the third sliding blocks (26) are arranged in two groups, and the sliding grooves arranged in the top end of the second handle (12) and the two groups of third sliding blocks (26) form a sliding structure.

7. The percussion hammer device for department of pediatrics of claim 1, wherein: the first moving rod (17) is cylindrical, a groove is formed in the surface of the first moving rod (17), and the size of the surface of the fixing rod (16) is smaller than the size of the inner wall of the groove formed in the surface of the first moving rod (17).

8. The percussion hammer device for department of pediatrics of claim 1, wherein: the two groups of second sliding blocks (19) are arranged, sliding grooves are formed in the inner wall of the second rotating shaft (20), and the sliding structures are formed by the two groups of second sliding blocks (19) and the sliding grooves formed in the inner wall of the second rotating shaft (20).

9. The percussion hammer device for department of pediatrics of claim 1, wherein: the fixed rotating wheel (24) is of a circular structure, a half circle of teeth are arranged on the surface of the fixed rotating wheel (24), teeth are arranged at the bottom end of the knocking head (25), and the half circle of teeth arranged on the surface of the fixed rotating wheel (24) are meshed with the teeth arranged on the surface of the bottom end of the knocking head (25).

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