CN217611435U

CN217611435U - Striking device

Info

Publication number: CN217611435U
Application number: CN202220371441.2U
Authority: CN
Inventors: 孟李艾俐; 张兴鹏
Original assignee: Bone Shengyuanhua Robot Shenzhen Co ltd
Current assignee: Bone Shengyuanhua Robot Shenzhen Co ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-10-21
Anticipated expiration: 2032-02-23

Abstract

The utility model relates to the technical field of medical equipment, a strike device is provided, including casing and striking mechanism. The striking mechanism comprises a striking component and a driving component, the striking component comprises a gap transmission piece, a rack transmission piece, a reset piece and a striking head, and the output end of the driving component is connected to the gap transmission piece; wherein, drive assembly drives clearance driving medium in order to exert the clearance and with the unidirectional effort that resets the extension opposite direction of piece to the rack driving medium to and, the striking head realizes reciprocal telescopic movement under the effect that resets the piece. The striking head can obtain invariable power output under drive assembly's drive to and, the piece that resets can maintain the striking head and obtain the dynamics of strikeing steadily.

Description

Striking device

Technical Field

The utility model relates to the technical field of medical equipment, especially, provide a strike device.

Background

During the surgical operation, there are cases where the human bone and the prosthesis to be installed are subjected to impact force. However, in practice, medical staff often perform manual tapping with a hammer, which makes it difficult to maintain consistent tapping force and tapping power.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a strike device aims at solving present medical staff and is carrying out bone surgery or artificial limb replacement operation and lead to strikeing the dynamics and strikeing the problem that the power is difficult to maintain the invariant because of manual striking.

In order to achieve the above object, the utility model adopts the following technical scheme: a striking device includes:

the shell is provided with a first accommodating space and a second accommodating space communicated with the first accommodating space;

the striking mechanism comprises a striking component arranged in the first accommodating space and a driving component arranged in the second accommodating space, the striking component comprises a gap transmission piece rotationally connected to the inner wall of the first accommodating space, a rack transmission piece meshed and connected to the gap transmission piece, a reset piece with one end connected to the rack transmission piece and the other end abutting against the inner wall of the first accommodating space, and a striking head connected to one end, far away from the reset piece, of the rack transmission piece, and the output end of the driving component is connected to the gap transmission piece;

the driving assembly drives the gap transmission piece to apply a unidirectional acting force with a gap opposite to the extension direction of the reset piece to the rack transmission piece, and the striking head realizes reciprocating telescopic movement under the action of the reset piece.

The utility model has the advantages that: the utility model provides a strike device, its working process as follows: after the driving component of the striking mechanism is started, the gap rotating component is driven to rotate around the shaft in the first accommodating space, and in the rotating process, the gap rotating component is matched with the rack driving component, so that the rack driving component is subjected to a unidirectional acting force opposite to the extending direction of the resetting component, at the moment, the striking head connected with the rack driving component obtains a driving force of inward-shrinkage movement, and meanwhile, the acting force is in a gap. In the whole process, the striking head can obtain constant power output under the driving of the driving assembly, and the resetting piece can maintain the striking head to obtain stable striking force.

In one embodiment, the gap driver comprises a gear portion connected to the output end of the drive assembly and a cylindrical portion disposed concentrically with the gear portion, and a first non-closed tooth structure is disposed on a peripheral side of the cylindrical portion, and the first tooth structure is engaged with the rack driver.

In one embodiment, the rack transmission member includes a bar-shaped main body portion and a connecting portion disposed on the bar-shaped main body portion, a second tooth-shaped structure adapted to the first tooth-shaped structure is disposed on the bar-shaped main body portion, and the connecting portion is connected to the striking head.

In one embodiment, the number of the gap transmission members is two, and the two gap transmission members are respectively arranged at two opposite sides of the rack transmission member.

In one embodiment, the rack transmission member includes a bar-shaped main body portion and a connecting portion disposed on the bar-shaped main body portion, the opposite sides of the bar-shaped main body portion are both provided with second tooth-shaped structures matched with the first tooth-shaped structures, and the connecting portion is connected to the striking head.

In one embodiment, the striking device further comprises a guide member, one end of the guide member is connected to the inner wall of the housing, the other end of the guide member penetrates through the rack transmission member, and the reset member is sleeved on the guide member.

In one embodiment, the driving assembly includes a motor disposed in the second accommodating space and a transmission gear disposed at an output end of the motor, and the transmission gear is coupled to the gear portion in a meshing manner.

In one embodiment, the driving assembly includes a motor disposed in the second accommodating space and a transmission gear disposed at an output end of the motor, and the transmission gear is simultaneously engaged with the gear portions of the two gap transmission members.

In one embodiment, the striking head includes a striking body sleeved on the connecting portion and a striking portion disposed on the striking body away from the connecting portion.

In one embodiment, the striking device further includes a linear bearing fixed in the first accommodating space and sleeved outside the striking main body.

Drawings

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

Fig. 1 is an exploded view of a striking device according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a striking device according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a gap driving member of a striking device according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a rack transmission member of a striking device according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

10. a housing; 10a, a first accommodating space; 10b, a second accommodating space;

20. a striking mechanism; 21. a striking assembly; 22. a drive assembly; 211. a clearance transmission member; 212. a rack transmission member; 213. a reset member; 214. a striking head; 21a, a gear portion; 21b, a cylindrical portion; 21c, a first tooth-shaped structure; 21d, a strip-shaped main body portion; 21e, a connecting part; 21f, a second tooth-shaped structure; 221. a motor; 222. a transmission gear; 21g, a striking main body; 21h, a striking part;

30. a guide member;

40. a linear bearing.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1 and 2, the striking device of the present invention includes a housing 10 and a striking mechanism 20. The housing 10 provides an accommodating space for accommodating the striking mechanism 20. The striking mechanism 20 is a main mechanism for realizing the continuous and stable output of the striking force.

Specifically, the housing 10 has a first accommodating space 10a and a second accommodating space 10b communicating with the first accommodating space 10 a. It is understood that the first receiving space 10a is used for receiving a space required for the striking component of the striking mechanism 20 to move, and the second receiving space 10b is used for receiving a driving component of the striking mechanism 20.

Illustratively, the outer shape of the housing 10 is T-shaped, that is, the housing 10 includes a first sub-housing 10 and a second sub-housing 10 vertically connected to the first sub-housing 10. The first receiving space 10a is formed in the first sub-housing 10, and the second receiving space 10b is formed in the second sub-housing 10, so that the overall shape of the striking device is similar to that of a "pistol" and medical staff can hold the second sub-housing 10 when using the striking device, and the end surface of the first sub-housing 10 is the application end for releasing the striking force. Of course, the housing 10 may have other configurations, and is not limited thereto.

The striking mechanism 20 includes a striking assembly 21 and a driving assembly 22. The striking assembly 21 is a mechanism for outputting striking force, and the driving assembly 22 is a power mechanism for providing a power source, and is a main mechanism for enabling the striking device to continuously output striking power. The striking assembly 21 is disposed in the first accommodating space 10a, and the driving assembly 22 is disposed in the second accommodating space 10b. The striking assembly 21 includes a gap driving member 211 rotatably connected to the inner wall of the first accommodating space 10a, a rack driving member 212 engaged with the gap driving member 211, a reset member 213 having one end connected to the rack driving member 212 and the other end abutting against the inner wall of the first accommodating space 10a, and a striking head 214 connected to one end of the rack driving member 212 far from the reset member 213, wherein the output end of the driving assembly 22 is connected to the gap driving member 211. Here, the clearance transmission member 211 is capable of outputting the power continuously output by the driving assembly 22 in a regular intermittent manner, for example, the clearance transmission member 211 may be a gear clearance transmission member 211, a spiral clearance transmission member 211, etc., so as to provide a precondition for the striking head 214 to obtain striking power; the rack transmission member 212 is adapted to the gap transmission member 211 to obtain a power in the extending direction of the rack; the reset member 213 is used to restore the rack transmission member 212 to the initial position, for example, the reset member 213 may be a spring, an elastic block, etc., so that the striking head 214 disposed on the rack transmission member 212 can realize reciprocating movement under the driving of the gap transmission member 211 and the reset member 213.

The utility model provides a strike device, its working process as follows: after the driving assembly 22 of the striking mechanism 20 is activated, the gap rotating member is driven to rotate around the axis in the first accommodating space 10a, and during the rotation, the gap rotating member is adapted to the rack transmission member 212, so that the rack transmission member 212 receives a unidirectional acting force opposite to the protruding direction of the resetting member 213, at this time, the striking head 214 connected to the rack transmission member 212 obtains a driving force of the inward-contracting movement, and at the same time, the acting force is gap, and after the acting force is cancelled, under the resetting action of the resetting member 213, the resetting member 213 provides a driving force for the outward-protruding movement of the rack transmission member 212 and the striking head 214, and thus, the striking head 214 performs reciprocating and telescopic movement relative to the housing 10. In the whole process, the striking head 214 can obtain a constant power output under the driving of the driving assembly 22, and the resetting piece 213 can maintain the striking head 214 to obtain a stable striking force.

Specifically, referring to fig. 2 and 3, in one embodiment, the gap transmission member 211 includes a gear portion 21a connected to the output end of the driving assembly 22 and a cylindrical portion 21b concentrically disposed with the gear portion 21a, and a non-closed first tooth-shaped structure 21c is disposed on the circumferential side of the cylindrical portion 21b, and the first tooth-shaped structure 21c is engaged with the rack transmission member 212. It can be understood that the gap driving member 211 is in a cylindrical shape, and two ends of the gap driving member 211 are rotatably connected to the inner wall of the first accommodating space 10a, so that the driving component 22 drives the gear portion 21a of the gap driving member 211 to rotate around the axis, and meanwhile, the cylindrical portion 21b concentrically disposed with the gear portion 21a also performs a circular motion around the axis, and the first tooth structure 21c disposed on the cylindrical portion 21b is engaged with the rack driving member 212 to drive the rack driving member 212 to move in the first accommodating space 10a of the housing 10. Here, the first non-closed tooth-shaped structure 21c means that the tooth-shaped structure on the cylindrical portion 21b does not form a continuous structure, so that when the rack transmission member 212 is engaged for transmission, a transmission gap exists, and at the transmission gap, there is no interaction force between the rack transmission member 212 and the gap transmission member 211, so that the rack transmission member 212 is in a transmission gap, the transmission of the driving force is interrupted until the tooth-shaped structure on the cylindrical portion 21b is re-engaged with the rack transmission member 212, and the transmission of the driving force is achieved again. In conclusion, the rack transmission member 212 can obtain the driving force of the gap, so that the striking head 214 can obtain the driving force of the gap to realize the unidirectional movement.

During the transmission idle period, the reset member 213 can drive the rack transmission member 212 to move in the opposite direction to return to the initial position state, so that the striking head 214 can realize reciprocating telescopic movement under the combined action of the driving assembly 22, the gap transmission member 211, the rack transmission member 212 and the reset member 213.

Illustratively, as shown in fig. 3, the first tooth formation 21c on the cylindrical portion 21b of the clearance drive member 211 has a total of eleven teeth, i.e., three fifths of the circumferential side wall of the cylindrical portion 21b is provided with teeth for meshing engagement with the rack drive member 212. When the above-mentioned teeth are engaged with the rack transmission member 212, the rack transmission member 212 is in an inwardly contracted state, and the cylindrical portion 21b rotates with the gear portion 21a, and a portion thereof having no teeth rotates to the rack transmission member 212, the rack transmission member 212 and the cylindrical portion 21b protrude outward to an initial position under the action of the reset member 213 due to no interaction force, so that the rack transmission member 212 is reciprocally extended and contracted in the transmission path, and the striking head 214 can be reciprocally extended and contracted.

Referring to fig. 2 and 4, in an embodiment, the rack transmission member 212 includes a bar-shaped main body portion 21d and a connecting portion 21e disposed on the bar-shaped main body portion 21d, the bar-shaped main body portion 21d is provided with a second tooth-shaped structure 21f adapted to the first tooth-shaped structure 21c, and the connecting portion 21e is connected to the striking head 214. Here, bar-shaped main body portion 21d is the portion that interacts with gap driving member 211, and specifically, second tooth form structure 21f on bar-shaped main body portion 21d is adapted to first tooth form structure 21c of gap driving member 211, and the number of teeth of second tooth form structure 21f should be greater than the number of teeth of first tooth form structure 21c, so as to ensure that the driving force of gap driving member 211 can be completely transmitted to rack driving member 212, which also allows striking head 214 to obtain a striking amplitude that is greater in amplitude.

In one embodiment, the number of gap drivers 211 is two, with two gap drivers 211 disposed on opposite sides of rack driver 212. It can be understood that, by arranging two gap transmission members 211 symmetrically, the stress balance of the rack transmission member 212 in the reciprocating process of movement can be ensured, that is, there are acting forces on two opposite sides of the rack transmission member 212, so that the rack transmission member 212 can be prevented from being deviated due to a unilateral stress, or the rack transmission member 212 can be prevented from being contacted and rubbed with the inner wall of the housing 10 due to deviation.

Specifically, the rack transmission member 212 includes a bar-shaped main body portion 21d and a connecting portion 21e provided on the bar-shaped main body portion 21 d. In order to satisfy the requirement that both opposite sides of the rack transmission member 212 are provided with the gap transmission members 211. The opposite two sides of the bar-shaped main body part 21d are both provided with a second tooth-shaped structure 21f matched with the first tooth-shaped structure 21c, and the connecting part 21e is connected to the striking head 214.

The two gap drivers 211 each comprise, for example, a gear portion 21a and a cylindrical portion 21b, and a first tooth structure 21c is provided on a side wall of the cylindrical portion 21 b. The two gap transmission members 211 are symmetrically located on two opposite sides of the strip-shaped main body portion 21d of the rack transmission member 212, and the two opposite sides of the strip-shaped main body portion 21d are respectively provided with a second tooth-shaped structure 21f matched with the corresponding first tooth-shaped structure 21c, that is, the two opposite sides of the rack transmission member 212 are simultaneously stressed to obtain a same-direction driving force, so that the motion track of the rack transmission member 212 is easily limited by the two gap transmission members 211, and the stability is higher in the moving process.

Referring to fig. 1 and 2, in an embodiment, the striking device further includes a guide 30, one end of the guide 30 is connected to the inner wall of the housing 10, the other end of the guide 30 passes through the rack transmission member 212, and the reset member 213 is sleeved on the guide 30. Here, the guide 30 serves to limit the extension and contraction path of the reset member 213, and prevent the reset member 213 from deviating from the extension and contraction direction at the compression limit.

Referring to fig. 1 and 2, in one embodiment, the driving assembly 22 includes a motor 221 disposed in the second accommodating space 10b and a transmission gear 222 disposed at an output end of the motor 221, and the transmission gear 222 is engaged with the gear portion 21a. Here, the number of teeth of the transmission gear 222 may be adjusted according to the actual gear ratio, and an additional gear may be added between the transmission gear 222 and the gear portion 21a of the gap transmission member 211.

Alternatively, in another embodiment, the driving assembly 22 includes a motor 221 disposed in the second accommodating space 10b and a transmission gear 222 disposed at an output end of the motor 221, and the transmission gear 222 is engaged with the gear portions 21a of the two gap transmission members 211 at the same time. It is understood that in the present embodiment, one motor 221 is used to drive the gear portions 21a of the two gap transmission members 211, so as to obtain higher transmission efficiency.

Referring to fig. 1 and 2, in one embodiment, the striking head 214 includes a striking main body 21g sleeved on the connecting portion 21e and a striking portion 21h disposed on the striking main body 21g and far away from the connecting portion 21e. Here, in order to improve the connection stability and detachability of the striking head 214 and the rack transmission member 212, the striking main body portion 21g has a hollow mounting hole, and the connecting portion 21e is an axis body, that is, the striking main body portion 21g can be fitted over the connecting portion 21e, but naturally, in order to increase the connection stability of the two, the striking main body portion 21g and the connecting portion 21e may be sequentially inserted by a fastening member. The striking part 21h can adjust its outer shape according to the object to be struck. For example, the striking part 21h is a columnar block, and a mounting groove is opened in an end of the columnar block away from the striking main body 21g, and a filler having a higher hardness may be provided in the mounting groove to prevent the striking head 214 from being frequently replaced due to the breakage of the striking part 21h.

Referring to fig. 1 and 2, in an embodiment, the striking device further includes a linear bearing 40, and the linear bearing 40 is fixed in the first accommodating space 10a and sleeved outside the striking main body 21 g. As can be appreciated, the linear bearing 40 can achieve sliding connection between the outer wall of the striking main body portion 21g and the inner wall of the casing 10 to avoid direct friction between the outer wall of the striking main body portion 21g and the inner wall of the casing 10, thereby improving the service life of the casing 10.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A percussion device, characterized in that; the method comprises the following steps:

the striking mechanism comprises a striking component arranged in the first accommodating space and a driving component arranged in the second accommodating space, the striking component comprises a gap transmission member rotationally connected to the inner wall of the first accommodating space, a rack transmission member meshed and connected to the gap transmission member, a reset member with one end connected to the rack transmission member and the other end butted against the inner wall of the first accommodating space, and a striking head connected to one end of the rack transmission member far away from the reset member, and the output end of the driving component is connected to the gap transmission member;

2. A percussion device according to claim 1, characterized in that: the clearance transmission part comprises a gear part connected with the output end of the driving component and a cylindrical part concentrically arranged with the gear part, a first non-closed tooth-shaped structure is arranged on the peripheral side of the cylindrical part, and the first tooth-shaped structure is connected to the rack transmission part in a meshed mode.

3. A striking device according to claim 2, wherein: the rack transmission part comprises a strip-shaped main body part and a connecting part arranged on the strip-shaped main body part, a second tooth-shaped structure matched with the first tooth-shaped structure is arranged on the strip-shaped main body part, and the connecting part is connected with the striking head.

4. A percussion device according to claim 2, characterized in that: the number of the gap transmission pieces is two, and the two gap transmission pieces are respectively arranged on two opposite sides of the rack transmission piece.

5. A percussion device according to claim 4, characterized in that: the rack transmission part comprises a strip-shaped main body part and connecting parts arranged on the strip-shaped main body part, second tooth-shaped structures matched with the first tooth-shaped structures are arranged on two opposite sides of the strip-shaped main body part, and the connecting parts are connected to the striking head.

6. A percussion device according to any one of claims 1 to 5, characterised in that: the striking device further comprises a guide piece, one end of the guide piece is connected to the inner wall of the shell, the other end of the guide piece penetrates through the rack transmission piece, and the reset piece is sleeved on the guide piece.

7. A percussion device according to claim 2, characterized in that: the driving assembly comprises a motor arranged in the second accommodating space and a transmission gear arranged at the output end of the motor, and the transmission gear is connected to the gear part in a meshing manner.

8. A percussion device according to claim 4, characterized in that: the driving assembly comprises a motor arranged in the second accommodating space and a transmission gear arranged at the output end of the motor, and the transmission gear is simultaneously meshed with the gear parts of the two gap transmission members.

9. A percussion device according to claim 5, characterized in that: the striking head comprises a striking main body part sleeved on the connecting part and a striking part arranged on the striking main body part and far away from the connecting part.

10. A percussion device according to claim 9, characterised in that: the striking device further comprises a linear bearing, and the linear bearing is fixed in the first accommodating space and sleeved on the outer side of the striking main body part.