CN215979749U - Inflating mechanism and inflator pump - Google Patents

Abstract

The application discloses an inflation mechanism and an inflation pump, the inflation mechanism comprises a cylinder body, a piston body, a connecting rod and a driving assembly, the cylinder body is provided with an air cavity extending along a first preset direction, the piston body is positioned in the air cavity, the piston body comprises a first piston, the peripheral side of the first piston is abutted against the inner wall of the cylinder body, the first piston is provided with a connecting surface, the connecting rod is fixedly connected with the connecting surface, a first included angle is formed between the extending direction of the connecting rod and the connecting surface, the first included angle is an acute angle or an obtuse angle, and the driving assembly is connected with one end, far away from the connecting surface, of the connecting rod and is used for driving the connecting rod to swing so as to drive the piston body to reciprocate along the first preset direction; when the connecting rod swings to the same extending direction as the first preset direction, a second included angle is formed between the connecting surface and a plane perpendicular to the first preset direction. The design can effectively improve the reciprocating frequency of the piston in the cylinder so as to improve the working efficiency of the charge pump.

Description

Inflating mechanism and inflator pump

Technical Field

The application relates to the technical field of inflation pumps, in particular to an inflation mechanism and an inflation pump.

Background

The inflator pump comprises a connecting rod, a piston and a cylinder, wherein one end of the connecting rod is connected with the piston and drives the piston to reciprocate in the cylinder along the extending direction of the cylinder, and the frequency of the reciprocating motion of the piston in the cylinder determines the working efficiency of the inflator pump.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an inflating mechanism and an inflating pump, which can effectively improve the frequency of reciprocating motion of a piston in a cylinder so as to improve the working efficiency of the inflating pump.

In a first aspect, embodiments of the present application provide an inflation mechanism; the inflation mechanism comprises a cylinder body, a piston body, a connecting rod and a driving assembly, wherein the cylinder body is provided with an air cavity extending along a first preset direction, the piston body is positioned in the air cavity, the piston body comprises a first piston, the peripheral side of the first piston is abutted against the inner wall of the cylinder body, the first piston is provided with a connecting surface, the connecting rod is fixedly connected with the connecting surface, a first included angle is formed between the extending direction of the connecting rod and the connecting surface, the first included angle is an acute angle or an obtuse angle, and the driving assembly is connected with one end, far away from the piston body, of the connecting rod and used for driving the connecting rod to swing so as to drive the piston body to reciprocate along the first preset direction; when the connecting rod swings to the same extending direction as the first preset direction, a second included angle is formed between the connecting surface and a plane perpendicular to the first preset direction.

Based on this application embodiment inflate mechanism, the connecting rod is so that the connecting rod forms a whole with first piston with the connection face fixed connection of first piston, the extending direction of connecting rod makes the connecting rod slope connect on the connection face of first piston with connecting the face and form first contained angle, through the design of the first contained angle that forms, can promote the piston body at the connecting rod and reduce the too big problem of contained angle between the connection face of first piston and the water flat line that causes because the eccentric motion of connecting rod along the in-process of first preset direction motion in the cylinder body, make the contained angle between piston body and the water flat line reduce, in order to improve this mechanism's of aerifing work efficiency.

In some embodiments, the inflation mechanism further includes at least two extension portions, the extension portions are connected with one end of the connecting rod close to the connecting surface, one end of the extension portion far away from the connecting rod is connected with the connecting surface, and the extension direction of the extension portion intersects with the extension direction of the connecting rod.

Based on the embodiment, the connecting rod and the first piston are indirectly connected through the extending parts, the number of force bearing points between the connecting rod and the first piston is increased through the design of the at least two extending parts, so that the acting force of the connecting rod on the first piston can be dispersed into a plurality of partial forces acting on the first piston along the extending direction of the extending parts, the structural strength of the connecting part of the connecting rod and the first piston is enhanced, and the service life of the inflation mechanism is prolonged.

In some embodiments, the first included angle is an acute angle α, and a value range of α satisfies a conditional expression: alpha is more than or equal to 77 degrees and less than or equal to 87 degrees.

Based on the above embodiment, by reasonably designing the value of the first included angle, when the first included angle satisfies the above conditional expression, it can be ensured that the circumferential side of the first piston abuts against the inner wall of the cylinder body to achieve good sealing when the piston body moves in the cylinder body, and the frequency of the reciprocating motion of the piston in the cylinder body can be effectively increased to increase the working efficiency of the inflation mechanism, when the value of the first included angle exceeds the lower limit of the conditional expression, good sealing can be achieved between the circumferential side of the first piston and the inner wall of the cylinder body, but the inclination angle between the connecting rod and the first piston is small, which is not beneficial to increasing the frequency of the reciprocating motion of the piston body in the cylinder body to increase the working efficiency of the inflation mechanism, when the value of the first included angle exceeds the upper limit of the conditional expression, which is beneficial to increasing the frequency of the reciprocating motion of the piston body in the cylinder body to increase the working efficiency of the inflation mechanism, however, the inclined angle between the connecting rod and the first piston is large, which is not beneficial to realizing the sealing between the peripheral side of the first piston and the inner wall of the cylinder body in the motion process of the piston body.

In some embodiments, the piston body further includes a second piston connected to a side of the first piston away from the connecting rod, and during the movement of the piston body along the first preset direction, a peripheral side of the second piston is at least partially spaced from an inner wall of the cylinder.

Based on the above embodiment, in the process that the piston body moves along the first preset direction, the circumferential side part of the second piston is abutted against the inner wall of the cylinder body to make up a gap between the circumferential side of the first piston and the inner wall of the cylinder body, so that good sealing performance between the piston body and the inner wall of the cylinder body is ensured.

In some embodiments, the piston body further includes a connecting portion, the second piston is connected to the first piston via the connecting portion, and the second piston, the connecting portion and the first piston surround to form a groove.

Based on above-mentioned embodiment, through the fretwork area that the recess formed, reduced the holistic quality of piston body on the one hand, on the other hand has reduced the area of contact between the inner wall of piston body and cylinder body to further promote the frequency that the piston body is reciprocating motion in the cylinder body, further improved this work efficiency who aerifys the mechanism.

In some embodiments, a side of the piston body away from the connecting surface is provided with a pushing surface, and during the movement of the piston body along the first predetermined direction, when the pushing surface and the connecting surface are both in an inclined state relative to the plane, the inclination direction of the pushing surface is opposite to the inclination direction of the connecting surface.

Based on the above embodiment, by designing the pushing surface of the second piston as the inclined surface opposite to the inclined direction of the connecting surface of the first piston, the gap between the peripheral side of the first piston and the inner wall of the cylinder body in the process of the movement of the piston body in the cylinder body can be effectively compensated, and the good sealing performance between the piston body and the inner wall of the cylinder body is further improved.

In some embodiments, the inflation mechanism further comprises a reinforcement portion disposed at the connecting surface and connected to the connecting rod.

Based on the above-mentioned embodiment, the reinforcement part is equivalent to the reinforcing rib, and the contact area between the connecting rod and the first piston is increased, thereby improving the connection stability between the connecting rod and the first piston.

In some embodiments, the driving assembly includes a driving member and a transmission member, the transmission member is connected to the driving member and connected to an end of the connecting rod away from the connecting surface, wherein the driving member is configured to drive the transmission member to move so as to drive the connecting rod to swing, thereby driving the piston body to move along the first predetermined direction.

Based on above-mentioned embodiment, through the motion of driving piece drive driving medium, the connecting rod swing of being connected with it is driven to the driving medium, and the piston body that the connecting rod swing drove to be connected with it is reciprocating motion along first predetermined direction in the cylinder body, and the air in the piston body motion compression air cavity realizes breathing in and exhausting of this mechanism of aerifing.

In some embodiments, the driving member includes a driving motor, the transmission member includes a driving gear, a driven gear and a hinge portion, the driving gear is coaxially and fixedly connected with a transmission shaft of the driving motor, the driven gear is engaged with the driving gear, the hinge portion is disposed on the driven gear and close to an edge of the driven gear, and one end of the connecting rod, which is far away from the connecting surface, is rotatably connected with the hinge portion around a second preset direction; wherein, the second preset direction is parallel to the axial direction of the driven gear.

Based on the above embodiment, the transmission shaft of the driving motor rotates to drive the driving gear connected with the driving gear to rotate, the driving gear rotates to drive the driven gear meshed with the driving gear to rotate, the driven gear rotates to drive the connecting rod connected with the driven gear to swing, the connecting rod swings to drive the piston body connected with the connecting rod to reciprocate in the cylinder body along the first preset direction, and the piston body moves to compress air in the air cavity, so that air suction and exhaust of the inflation mechanism are realized.

In a second aspect, the present application provides an inflator, which includes a housing and the above-mentioned inflation mechanism, where the housing has a containing cavity, and the inflation mechanism is located in the containing cavity and connected to the housing.

Based on the inflator pump in the embodiment of the application, the inflator pump with the inflation mechanism has high inflation efficiency.

Inflation mechanism and pump based on this application embodiment, the connecting rod is so that the connecting rod forms a whole with first piston with the connection face fixed connection of first piston, the extending direction of connecting rod makes the connecting rod slope connect on the connection face of first piston with connecting the face and form first contained angle, design through the first contained angle that forms, can promote the piston body along the too big problem of contained angle between the connection face of first piston and the water flat line that the eccentric motion of connecting rod caused in-process reduction in the cylinder body along first predetermined direction motion at the connecting rod, make the contained angle between piston body and the water flat line reduce, in order to improve this inflation mechanism's work efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present application 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 application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural view of an inflation mechanism in one embodiment of the present application;

FIG. 2 is an exploded schematic view of an inflation mechanism in one embodiment of the present application;

FIG. 3 is an elevation view of the piston body in an angled connection with the connecting rod in one embodiment of the present application;

FIG. 4 is a schematic diagram of an embodiment of the present application showing the piston body and connecting rod connected in an inclined configuration;

FIG. 5 is a partial cross-sectional view of the piston body moving in a first predetermined direction within the cylinder to a position in one embodiment of the present application;

FIG. 6 is a partial cross-sectional view of the piston body moving in a first predetermined direction to another position within the cylinder in one embodiment of the present application;

FIG. 7 is a partial cross-sectional view of the piston body moving in a first predetermined direction to a further position within the cylinder in one embodiment of the present application;

FIG. 8 is a partial cross-sectional view of the piston body moving in a first predetermined direction to a further position within the cylinder in one embodiment of the present application;

FIG. 9 is a partial cross-sectional view of the piston body moving in a first predetermined direction within the cylinder to a further position in one embodiment of the present application;

FIG. 10 is a schematic view of an embodiment of an inflator of the present application;

FIG. 11 is a partial cross-sectional view of an inflator in one embodiment of the present application.

Reference numerals: 100. an inflation mechanism; 110. a cylinder body; 111. an air cavity; m, a first preset direction; s, plane; 120. a piston body; 121. a first piston; 1211. a connecting surface; 122. a connecting portion; 123. a second piston; 1231. pushing the joint surface; 1232. a groove; 130. a connecting rod; 140. an extension portion; 150. a drive assembly; 151. a drive member; 1511. a drive motor; 152. a transmission member; 1521. a driving gear; 1522. a driven gear; 1523. a hinge portion; 160. a reinforcing portion; 200. an inflator pump; 210. a housing.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

The inflator pump comprises a connecting rod, a piston and a cylinder, wherein one end of the connecting rod is connected with the piston and drives the piston to reciprocate in the cylinder along the extending direction of the cylinder, and the frequency of the reciprocating motion of the piston in the cylinder determines the working efficiency of the inflator pump.

For example, in a related art, the inflator includes a driving mechanism, a transmission mechanism, a connecting rod, a piston, and a cylinder, the driving mechanism is used as a power source for generating power, the driving mechanism is connected to the transmission mechanism to transmit the power to the transmission mechanism and drive the transmission mechanism to move, the transmission mechanism is connected to the connecting rod to transmit the power to the connecting rod and drive the connecting rod to move, one end of the connecting rod, which is far away from the transmission mechanism, is vertically and fixedly connected to the piston to transmit the power to the piston and drive the piston to reciprocate in the cylinder along an extending direction of the cylinder.

Because the connecting rod does eccentric motion around its pin joint under drive mechanism's effect to make the piston in the motion process, the contained angle between the plane on piston and the extending direction perpendicular to the cylinder is too big, leads to the piston to do reciprocating motion's frequency lower in the cylinder, causes the work efficiency of air pump low.

In order to solve the above technical problem, referring to fig. 1-9, a first aspect of the present application provides an inflator 100 capable of effectively increasing the frequency of the reciprocating motion of the piston in the cylinder to increase the working efficiency of an inflator 200.

The inflation mechanism 100 includes a cylinder body 110, a piston body 120, a connecting rod 130 and a driving assembly 150, the cylinder body 110 has an air cavity 111 extending along a first preset direction M, the piston body 120 is located in the air cavity 111, the piston body 120 includes a first piston 121, a peripheral side of the first piston 121 abuts against an inner wall of the cylinder body 110, the first piston 121 has a connecting surface 1211, the connecting rod 130 is fixedly connected with the connecting surface 1211, a first included angle (α shown in fig. 3) is formed between an extending direction of the connecting rod 130 and the connecting surface 1211, the first included angle is an acute angle or an obtuse angle, the driving assembly 150 is connected with one end of the connecting rod 130 far away from the connecting surface 1211 and is used for driving the connecting rod 130 to swing so as to drive the piston body 120 to reciprocate along the first preset direction M; when the link 130 swings to the same extending direction of the link 130 as the first predetermined direction M, the connection surface 1211 forms a second angle (β shown in fig. 5) with the plane S perpendicular to the first predetermined direction M.

Based on the inflation mechanism 100 of the embodiment of the application, the connecting rod 130 is fixedly connected to the connecting surface 1211 of the first piston 121, so that the connecting rod 130 and the first piston 121 form a whole, and the extending direction of the connecting rod 130 and the connecting surface 1211 form a first included angle, so that the connecting rod 130 is obliquely connected to the connecting surface 1211 of the first piston 121, and through the design of the formed first included angle, the problem that the included angle between the connecting surface 1211 of the first piston 121 and the horizontal line is too large due to the eccentric movement of the connecting rod 130 can be reduced in the process that the connecting rod 130 pushes the piston body 120 to move in the cylinder body 110 along the first preset direction M, so that the included angle between the piston body 120 and the horizontal line is reduced, and the working efficiency of the inflation mechanism 100 is improved.

The specific structure of the inflation mechanism 100 will be described in detail below with reference to fig. 1 to 9, and the inflation mechanism 100 includes a cylinder 110, a piston body 120, a connecting rod 130, and a driving assembly 150.

Fig. 1-4 show a schematic view of an embodiment of an inflator according to the present invention, fig. 1 shows an exploded view of an embodiment of an inflator according to the present invention, fig. 2 shows an exploded view of an embodiment of an inflator according to the present invention, fig. 3 shows a front view of an embodiment of a piston body obliquely connected to a connecting rod, and fig. 4 shows a schematic view of an embodiment of a piston body obliquely connected to a connecting rod.

The cylinder block 110 is a component of the inflation mechanism 100 for providing a motion track for the piston body 120, and the cylinder block 110 has an air chamber 111 extending along a first preset direction M, that is, a hollow area inside the cylinder block 110 is the air chamber 111, wherein the "first preset direction M" should be understood as a direction (M shown in fig. 5) parallel to the extending direction of the cylinder block 110.

The piston body 120 is used as a component of the air charging mechanism 100 for compressing the air in the air chamber 111, the piston body 120 is located in the air chamber 111 of the cylinder 110, the piston body 120 includes a first piston 121, the peripheral side of the first piston 121 abuts against the inner wall of the cylinder 110, that is, the outer peripheral dimension of the first piston 121 is matched with the inner peripheral dimension of the cylinder 110, so that a sealed air chamber 111 is formed between the first piston 121 and the inner wall of the cylinder 110, and the first piston 121 reciprocates in the air chamber 111 of the cylinder 110 along a first preset direction M to compress the air in the air chamber 111. The first piston 121 has a connecting surface 1211, and the connecting surface 1211 is a surface of the first piston 121 connected to the connecting rod 130.

The connecting rod 130 is used as a component of the inflation mechanism 100 for driving the piston body 120 to reciprocate in the air chamber 111 of the cylinder 110, the connecting rod 130 is fixedly connected to the connecting surface 1211 of the first piston 121, an extending direction of the connecting rod 130 forms a first included angle (α shown in fig. 3) with the connecting surface 1211, the first included angle is an acute angle or an obtuse angle, that is, the connecting rod 130 is connected to the first piston 121 in an inclined manner, or the extending direction of the connecting rod 130 is not perpendicular to the connecting surface 1211 of the first piston 121, or the extending direction of the connecting rod 130 includes a first component parallel to the connecting surface 1211 of the first piston 121 and a second component perpendicular to the connecting surface 1211 of the first piston 121.

The driving assembly 150 is used as a component for driving the connecting rod 130 to move in the inflation mechanism 100, the driving assembly 150 is connected to one end of the connecting rod 130, which is far away from the piston body 120, and a specific structure of the driving assembly 150 and a specific connection relationship between the driving assembly 150 and the connecting rod 130 will be described later, the driving assembly 150 is used for driving the connecting rod 130 to swing so as to drive the piston body 120 to reciprocate along the first preset direction M, that is, the driving assembly 150 transmits power to the connecting rod 130 and drives the connecting rod 130 to swing by being connected to the connecting rod 130, the connecting rod 130 is connected to the first piston 121 so as to transmit power to the first piston 121, and the peripheral side of the first piston 121 abuts against and is matched with the inner wall of the cylinder body 110 so as to enable the piston body 120 to move along the first preset direction M.

When the connecting rod 130 swings to the same extending direction of the connecting rod 130 as the first predetermined direction M, a second included angle (β shown in fig. 5) is formed between the connecting surface 1211 of the first piston 121 and the plane S perpendicular to the first predetermined direction M, and it can be understood that the connecting rod 130 forms a regular swinging track under the action of the driving assembly 150, so as to drive the piston body 120 to perform regular reciprocating motion in the cylinder body 110 along the first predetermined direction M to compress the air in the air chamber 111, so that the connecting rod 130 has a corresponding position in the cylinder body 110 for each swinging of the piston body 120 to a position, and when the piston body 120 is at different positions, the size of the second included angle formed between the connecting surface 1211 of the first piston 121 and the plane S perpendicular to the first predetermined direction M is also different.

As shown in fig. 3 to 4, considering the rigid connection between the connecting rod 130 and the first piston 121, and when the piston body 120 reciprocates in the cylinder 110 in the first predetermined direction M by the connecting rod 130, there is also an interaction force between the connecting rod 130 and the first piston 121, which is further designed to enhance the structural strength of the joint between the connecting rod 130 and the first piston 121, in some embodiments, the inflation mechanism 100 further comprises at least two extensions 140, the extensions 140 are connected to an end of the connecting rod 130 near the connecting surface 1211, an end of the extensions 140 away from the connecting rod 130 is connected to the connecting surface 1211, and the extending direction of the extending portion 140 intersects with the extending direction of the connecting rod 130, that is, one end of the connecting rod 130 close to the connecting surface 1211 is connected with the connecting surface 1211 of the first piston 121 through at least two extending portions 140, and the extending portions 140 are connected with the end of the connecting rod 130 in an inclined manner. Specifically, the number of the extensions 140 is two, and the two extensions 140 extend in opposite directions and form a "Y-like" structure with the connecting rod 130. In the design, the connecting rod 130 and the first piston 121 are indirectly connected through the extension parts 140, and the number of force bearing points between the connecting rod 130 and the first piston 121 is increased through the design of at least two extension parts 140, so that the acting force of the connecting rod 130 on the first piston 121 can be dispersed into a plurality of component forces acting on the first piston 121 along the extension direction of the extension parts 140, the structural strength of the connection part of the connecting rod 130 and the first piston 121 is enhanced, and the service life of the inflation mechanism 100 is prolonged.

It can be understood that, the size of the first included angle formed by the extending direction of the connecting rod 130 and the connecting surface 1211 of the first piston 121 is designed, in addition to considering that the circumferential side of the first piston 121 is abutted against the inner wall of the cylinder 110 to achieve sealing in the process of reciprocating the piston body 120 in the cylinder 110, and considering the frequency of reciprocating the piston body 120 in the cylinder 110 to improve the working efficiency of the inflation mechanism 100, so it is further designed, in some embodiments, the first included angle is an acute angle α, and the value range of α satisfies the conditional expression: alpha is more than or equal to 77 degrees and less than or equal to 87 degrees, for example, the value of alpha can be 77 degrees, 82 degrees or 87 degrees, etc. Specifically, in this embodiment, α is 79 degrees. In the design, by reasonably designing the value of the first included angle, when the first included angle satisfies the above conditional expression, it can be ensured that the circumferential side of the first piston 121 abuts against the inner wall of the cylinder 110 to achieve good sealing when the piston body 120 moves in the cylinder 110, and the frequency of the reciprocating motion of the piston in the cylinder 110 can be effectively increased to improve the working efficiency of the inflation mechanism 100, when the value of the first included angle exceeds the lower limit of the conditional expression, good sealing can be achieved between the circumferential side of the first piston 121 and the inner wall of the cylinder 110, but the inclination angle between the connecting rod 130 and the first piston 121 is small, which is not beneficial to increasing the frequency of the reciprocating motion of the piston body 120 in the cylinder 110 to improve the working efficiency of the inflation mechanism 100, when the value of the first included angle exceeds the upper limit of the conditional expression, which is beneficial to increasing the frequency of the reciprocating motion of the piston body 120 in the cylinder 110 to improve the working efficiency of the inflation mechanism 100, however, the inclination angle between the connecting rod 130 and the first piston 121 is large, which is not favorable for realizing the sealing between the peripheral side of the first piston 121 and the inner wall of the cylinder 110 during the movement of the piston body 120.

Fig. 5 is a partial sectional view of a piston body in a cylinder block moving to one position along a first preset direction in an embodiment of the present invention, fig. 6 is a partial sectional view of a piston body in an embodiment of the present invention moving to another position along a first preset direction in a cylinder block, fig. 7 is a partial sectional view of a piston body in an embodiment of the present invention moving to yet another position along a first preset direction in a cylinder block, fig. 8 is a partial sectional view of a piston body in an embodiment of the present invention moving to yet another position along a first preset direction in a cylinder block, and fig. 9 is a partial sectional view of a piston body in an embodiment of the present invention moving to yet another position along a first preset direction in a cylinder block.

In consideration of machining errors in actual production machining, the first included angle formed by the extending direction of the connecting rod 130 and the connecting surface 1211 of the first piston 121 is designed so that during the movement of the piston body 120 in the cylinder 110, there may be a case where a gap occurs between the peripheral side of the first piston 121 and the inner wall of the cylinder 110, thereby causing a failure in the sealing performance of the inflation mechanism 100, so it is further designed that, in some embodiments, the piston body 120 further includes a second piston 123, the second piston 123 is connected to the side of the first piston 121 away from the connecting rod 130, during the movement of the piston body 120 in the first preset direction M, the peripheral side of the second piston 123 is at least partially spaced from the inner wall of the cylinder 110, that is, during the movement of the piston body 120 in the first preset direction M, the peripheral side of the second piston 123 may be completely spaced from the inner wall of the cylinder 110, and a portion of the peripheral side of the second piston 123 may be abutted against the inner wall of the cylinder 110. In this design, in the process that the piston body 120 moves along the first preset direction M, the portion of the peripheral side of the second piston 123 abuts against the inner wall of the cylinder 110, so as to compensate for a gap between the peripheral side of the first piston 121 and the inner wall of the cylinder 110, thereby ensuring good sealing performance between the piston body 120 and the inner wall of the cylinder 110.

Further, considering that the mass of the piston body 120 and the contact area between the piston body 120 and the inner wall of the cylinder 110 influence the frequency of the reciprocating motion of the piston body 120 in the cylinder 110 during the movement of the piston body 120 in the cylinder 110 along the first predetermined direction M, the piston body 120 further includes a connecting portion 122, the second piston 123 is connected to the first piston 121 via the connecting portion 122, and the second piston 123, the connecting portion 122 and the first piston 121 surround to form a groove 1232, that is, the second piston 123, the connecting portion 122 and the first piston 121 form the piston body 120 with an i-shaped structure. In this design, the hollow area formed by the groove 1232 reduces the overall mass of the piston body 120, and reduces the contact area between the piston body 120 and the inner wall of the cylinder 110, thereby further increasing the frequency of the reciprocating motion of the piston body 120 in the cylinder 110, and further improving the working efficiency of the inflation mechanism 100.

Further, in order to ensure that the second piston 123 can effectively compensate for the gap between the peripheral side of the first piston 121 and the inner wall of the cylinder 110 during the movement of the piston body 120, it is further designed that in some embodiments, a pushing surface 1231 is disposed on a side of the piston body 120 away from the connecting surface 1211, and when the pushing surface 1231 and the connecting surface 1211 are both in an inclined state with respect to the plane S (i.e., the plane S perpendicular to the first predetermined direction M) during the movement of the piston body 120 along the first predetermined direction M, the inclined direction of the pushing surface 1231 is opposite to the inclined direction of the connecting surface 1211, that is, the connecting surface 1211 of the first piston 121 and the pushing surface 1231 of the second piston 123 are both obliquely intersected (non-parallel) with the plane S perpendicular to the first predetermined direction M, and the connecting surface 1211 of the first piston 121 is inclined clockwise away from the pushing surface 1231 from the end of the second piston 123, the push abutment surface 1231 of the second piston 123 is inclined counterclockwise away from the connection surface 1211 from the end near the connection surface 1211 of the first piston 121. In this design, the push-contact surface 1231 of the second piston 123 is designed to be an inclined surface opposite to the inclination direction of the connection surface 1211 of the first piston 121, so that a gap between the circumferential side of the first piston 121 and the inner wall of the cylinder 110 during the movement of the piston body 120 in the cylinder 110 can be effectively compensated, and the sealing performance between the piston body 120 and the inner wall of the cylinder 110 can be further improved.

As shown in fig. 3 to 4, in consideration of the rigid connection between the connecting rod 130 and the first piston 121, and when the piston body 120 reciprocates in the cylinder 110 along the first predetermined direction M under the action of the connecting rod 130, an interaction force also exists between the connecting rod 130 and the first piston 121, so as to ensure the connection stability between the connecting rod 130 and the first piston 121, in some embodiments, the inflation mechanism 100 further includes a reinforcing portion 160, the reinforcing portion 160 is disposed on the connecting surface 1211 and connected to the connecting rod 130, and specifically, the reinforcing portion 160 has a rectangular block structure. In this design, the reinforcement part 160 acts as a reinforcing rib, increasing a contact area between the connecting rod 130 and the first piston 121, thereby improving connection stability between the connecting rod 130 and the first piston 121.

Considering that the driving assembly 150, as shown in fig. 1-2, serves as a component for providing power to the piston body 120 in the inflation mechanism 100 and also serves as a component for transmitting power to the connecting rod 130 to achieve power transmission, in some embodiments, the driving assembly 150 includes a driving member 151 and a transmission member 152, the transmission member 152 is connected to the driving member 151, and the transmission member 152 is connected to an end of the connecting rod 130 away from the connecting surface 1211, and the driving member 151 is configured to drive the transmission member 152 to move so as to swing the connecting rod 130, thereby driving the piston body 120 to move along the first predetermined direction M. The driving member 151 is used as a power source for generating a driving force, and the transmission member 152 is used as a component for transmitting the driving force, and transmits the driving force generated by the driving member 151 to the connecting rod 130 to drive the connecting rod 130 to swing, so that the connecting rod 130 swings to drive the piston body 120 connected thereto to reciprocate in the cylinder 110 along the first predetermined direction M. In the design, the driving element 151 drives the driving element 152 to move, the driving element 152 drives the connecting rod 130 connected with the driving element to swing, the connecting rod 130 swings to drive the piston body 120 connected with the connecting rod to reciprocate in the cylinder 110 along the first preset direction M, and the piston body 120 moves to compress the air in the air cavity 111, so that the air suction and the air exhaust of the inflation mechanism 100 are realized.

Further, considering that there are many specific structures of the driving member 151 capable of serving as a power source, such as hydraulic cylinders, there are numerous specific configurations of the transmission member 152 that also effect power transmission, for example, the power transmission realized by the chain and the chain wheel, in order to conveniently control the reciprocating motion of the piston body 120 in the cylinder body 110, the power transmission is further designed, in some embodiments, the driving element 151 includes a driving motor 1511, the transmission element 152 includes a driving gear 1521, a driven gear 1522 and a hinge portion 1523, the driving gear 1521 is coaxially and fixedly connected to a transmission shaft of the driving motor 1511, the driven gear 1522 is engaged with the driving gear 1521, the hinge portion 1523 is disposed on the driven gear 1522 and close to an edge of the driven gear 1522, an end of the connecting rod 130 away from the connecting surface 1211 is rotatably connected to the hinge portion 1523 around a second predetermined direction, wherein the second predetermined direction is parallel to an axial direction of the driven gear 1522. That is to say, the transmission shaft of the driving motor 1511 rotates to drive the driving gear 1521 connected thereto to rotate, the driving gear 1521 rotates to drive the driven gear 1522 engaged therewith to rotate, and the driven gear 1522 is engaged with the driving gear 1521, and the rotation in the direction of the transmission shaft of the driving motor 1511 is converted into the rotation in the direction perpendicular to the transmission shaft of the driving motor 1511, so as to realize a 90-degree rotation, the driven gear 1522 rotates to drive the connecting rod 130 connected thereto to swing, and the connecting rod 130 is eccentrically connected to the driven gear 1522 through the hinge portion 1523, the connecting rod 130 swings to drive the piston body 120 connected thereto to reciprocate in the cylinder body 110 along the first preset direction M, and the piston body 120 moves to compress the air in the air cavity 111, so as to realize the air suction and exhaust of the inflation mechanism 100.

As shown in fig. 10 to 11, fig. 10 is a schematic structural view of an inflator in an embodiment of the present application, and fig. 11 is a partial sectional view of the inflator in an embodiment of the present application.

In a second aspect of the present application, an inflator 200 is provided, the inflator 200 includes a housing 210 and the inflation mechanism 100, the housing 210 has a receiving cavity, and the inflation mechanism 100 is located in the receiving cavity and connected to the housing 210. Specifically, the above-mentioned inflation mechanism 100 can be installed on the frame body in a screw-connection fit or glue-connection fit manner, and the frame body is fixed to the housing 210 in a clamping fit manner. In this design, the inflator 200 having the above-described inflation mechanism 100 has high inflation efficiency.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present application, it is to be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the above terms may be understood by those skilled in the art according to specific situations.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. An inflation mechanism, comprising:

the cylinder body is provided with an air cavity extending along a first preset direction;

the piston body is positioned in the air cavity and comprises a first piston, the peripheral side of the first piston is abutted against the inner wall of the cylinder body, and the first piston is provided with a connecting surface;

the connecting rod is fixedly connected with the connecting surface, a first included angle is formed between the extending direction of the connecting rod and the connecting surface, and the first included angle is an acute angle or an obtuse angle;

the driving assembly is connected with one end, far away from the piston body, of the connecting rod and is used for driving the connecting rod to swing so as to drive the piston body to reciprocate along the first preset direction;

when the connecting rod swings to the same extending direction of the connecting rod as the first preset direction, a second included angle is formed between the connecting surface and a plane perpendicular to the first preset direction.

2. The inflation mechanism of claim 1,

the inflation mechanism further comprises at least two extension parts, the extension parts are connected with one ends, close to the connecting surfaces, of the connecting rods, one ends, far away from the connecting rods, of the extension parts are connected with the connecting surfaces, and the extension directions of the extension parts are intersected with the extension direction of the connecting rods.

3. The inflation mechanism of claim 1,

the first included angle is an acute angle alpha, and the value range of the alpha meets the conditional expression: alpha is more than or equal to 77 degrees and less than or equal to 87 degrees.

4. The inflation mechanism of claim 1,

the piston body still includes the second piston, the second piston with the first piston is kept away from one side of connecting rod is connected, the piston body is followed the first in-process of predetermineeing the direction motion, the week side of second piston at least part with the inner wall interval of cylinder body.

5. The inflation mechanism of claim 4,

the piston body further comprises a connecting part, the second piston is connected with the first piston through the connecting part, and the second piston, the connecting part and the first piston surround to form a groove.

6. The inflation mechanism of claim 1, wherein the piston body comprises:

and when the pushing surface and the connecting surface are in an inclined state relative to the plane in the process of moving along the first preset direction, the inclined direction of the pushing surface is opposite to the inclined direction of the connecting surface.

7. The inflation mechanism of claim 1,

the inflation mechanism further comprises a reinforcing part, and the reinforcing part is arranged on the connecting surface and connected with the connecting rod.

8. The inflation mechanism of claim 1, wherein the drive assembly comprises:

a drive member;

the transmission part is connected with the driving part and is connected with one end of the connecting rod, which is far away from the connecting surface;

the driving part is configured to drive the transmission part to move so as to drive the connecting rod to swing, so that the piston body is driven to move along the first preset direction.

9. The inflation mechanism of claim 8,

the driving part comprises a driving motor;

the transmission member includes:

the driving gear is coaxially and fixedly connected with a transmission shaft of the driving motor;

a driven gear engaged with the driving gear,

the hinged part is arranged on the driven gear and is close to the edge of the driven gear, and one end of the connecting rod, which is far away from the connecting surface, is rotationally connected with the hinged part in a second preset direction;

wherein the second preset direction is parallel to the axial direction of the driven gear.

10. An inflator, comprising:

a housing having an accommodating chamber;

the inflation mechanism of any one of claims 1-9, located within the containment chamber and connected to the housing.

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