A fascia gun transmission mechanism and a fascia gun

Abstract

The utility model relates to a fascia gun transmission mechanism and fascia gun, the fascia gun transmission mechanism includes integrated drive assembly, transmission connecting piece and transmission rod, transmission connecting piece connects between integrated drive assembly with transmission rod, to with integrated drive assembly power transmission reaches transmission rod, integrated drive assembly includes casing, motor and eccentric part, the motor with eccentric part all integrated installation reaches casing, to with casing synchronous installation has the advantage that the assembly efficiency is high.

Description

Technical Field

[0001] This utility model relates to the technical field of massage devices, and in particular to a fascia gun transmission mechanism and a fascia gun. Background Technology

[0002] In the installation process of existing fascia guns, the motor is usually installed on its housing first, then the transmission components, bearings and eccentric parts are assembled, and finally the eccentric parts and motor are connected by fasteners.

[0003] For example, Chinese Patent CN217793769U discloses a fascia gun transmission mechanism and a fascia gun, specifically disclosing: an eccentric structure, a connecting rod, a connector, a washer, a fastener, a fixing frame, and a fixing component. The eccentric structure includes a first bearing with an eccentric inner ring. The eccentric inner ring has an eccentrically positioned connecting hole for fixing to the output shaft of a motor, driving the first bearing to rotate eccentrically. One side of the connecting rod is rotatably sleeved outside the first bearing. The fastener can be configured through interference fit, snap-fit, or screw connection within the connecting hole and the opening to fix the connector and the output shaft. This solution... Figure 1 and Figure 2 It is evident that the assembly of the fascia gun requires the integration of an eccentric structure, connecting rods, connectors, gaskets, and motor shaft, making the assembly process quite difficult. Furthermore, with a large number of components, assembly failures are more likely to occur, potentially leading to reduced assembly efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects in the prior art, thereby providing a fascia gun transmission mechanism and a fascia gun.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A fascia gun transmission mechanism is used for a fascia gun; the fascia gun transmission mechanism includes an integrated drive assembly, a transmission connector, and a transmission rod; The transmission connector is connected between the integrated drive assembly and the transmission rod to transmit the power of the integrated drive assembly to the transmission rod. The integrated drive assembly includes a housing, a motor, and an eccentric part. The motor and the eccentric part are both integrated and installed in the housing so as to be installed synchronously with the housing.

[0006] In the above solution, the eccentric part is directly integrated into the housing. When assembling the fascia gun, the user only needs to connect the transmission rod and the eccentric part of the integrated drive assembly through the transmission connector. Compared with the existing installation method of first installing the motor, then assembling the transmission rod, bearing, and eccentric part, and finally connecting the eccentric part and the motor through fasteners, the fascia gun assembly process requires fewer structures to be assembled, which can avoid the situation of omissions that are easily caused by manually assembling multiple parts. At the same time, it can also increase assembly efficiency.

[0007] Furthermore, this integrated drive assembly is applicable to different fascia guns; only the transmission connectors of different types (such as those with different diameters and structures) need to be replaced.

[0008] Preferably, the eccentric portion includes a large end and a small end, and the large end and the small end are eccentrically disposed; A slot is recessed in the central area of ​​one side face of the large end, and the slot is used to be inserted and engaged with the motor shaft of the motor. The small end protrudes from the large end and is used to connect with the central area of ​​the transmission connector.

[0009] In the above scheme, the eccentric part is provided with a large end and a small end. The large end is connected to the motor shaft, and the small end is connected to the transmission connector. Compared with directly using an eccentric block structure of the same thickness (such as a circular plate whose rotation center is off-center), this effectively reduces the mass of the part performing eccentric motion, thereby effectively reducing unnecessary inertial forces, lowering the load on the motor shaft, and further improving the stability of the transmission. Furthermore, the connection between the large end and the motor shaft also ensures the stability of the connection between the two.

[0010] Preferably, the small end is arranged in a stepped shape with a gradually decreasing diameter, along the axial direction of the small end away from the large end.

[0011] In the above scheme, by setting the small end in a stepped shape with a gradually decreasing diameter, the mass of the small end can be reduced to a certain extent, thereby reducing the impact on the motor shaft caused by the eccentric setting of the small end relative to the large end. At the same time, this setting also allows the diameter of the end connecting the small end and the large end to be relatively large, increasing the connection area between the small end and the large end, which can increase the stability of the connection between the small end and the large end to a certain extent, and prevent the connection point between the small end and the large end from being prone to breakage.

[0012] Preferably, the transmission connector is rotatably mounted on the outer periphery of the small end; An axial limiting surface is provided on the outer periphery of the small end; The fascia gun transmission mechanism also includes a fastening assembly, which is fixedly connected to the small end to press the transmission connector onto the axial limiting surface.

[0013] In the above scheme, by setting fastening components and axial limiting surfaces, the axial limiting of the transmission connector can be achieved to avoid axial runout during reciprocating motion, which is conducive to ensuring stable transmission of the transmission connector.

[0014] Preferably, the transmission connector has an abutting end face that abuts against the axial limiting surface.

[0015] In the above solution, the transmission connector abuts against the axial limiting surface through its abutting end face, which increases the contact area between the transmission connector and the small end, thereby further enhancing the axial limiting effect of the transmission connector. Simultaneously, the abutting end face and the axial limiting surface ensure proper positioning and installation, preventing the transmission connector from tilting relative to the small end, thus avoiding shearing forces on the small end and preventing deformation or even breakage of the small end.

[0016] Preferably, a groove is provided on one side of the transmission rod, and the groove is sleeved on the outer periphery of the transmission connector; the side wall of the groove abuts against the side wall of the transmission connector.

[0017] In the above scheme, the transmission rod is connected to the transmission connector through a groove, which can prevent the transmission rod from tilting away from the end face of the transmission connector, ensure stable transmission between the two, and facilitate the assembly of the two.

[0018] Preferably, the bottom wall surface of the settling tank abuts against the contact end surface of the transmission connector.

[0019] In the above scheme, the bottom surfaces of the settling tanks abut each other, which can further prevent the transmission rod from axially running.

[0020] Preferably, the integrated drive assembly further includes a bearing; The bearing is sleeved on the outer periphery of the large end, and the outer wall surface of the bearing abuts against the inner wall surface of the housing.

[0021] In the above solution, the bearing is fitted onto the large end and integrated and fixed inside the housing, ensuring stable operation of the large end without increasing the assembly difficulty of the fascia gun. Furthermore, the bearing is directly fitted onto the outer circumference of the eccentric portion, improving the stability of the motor output.

[0022] Preferably, the bearing is a rolling bearing.

[0023] A fascia gun includes a housing and a fascia gun transmission mechanism as described above; The fascia gun transmission mechanism includes an integrated drive assembly, which is fixedly installed inside the housing.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model provides a fascia gun transmission mechanism, in which the eccentric part is directly integrated into the housing. During fascia gun assembly, the user only needs to connect the transmission rod and the eccentric part of the integrated drive assembly via the transmission connector. Compared to the existing method of first installing the motor, then assembling the transmission rod, bearings, and eccentric part, and finally connecting the eccentric part and motor with fasteners, this method requires fewer components to be assembled, avoiding the possibility of omissions due to manual assembly of multiple parts, and increasing assembly efficiency. Furthermore, this integrated drive assembly is applicable to different fascia guns; only different types of transmission connectors (such as those with different diameters and structures) need to be replaced. Correspondingly, the fascia gun provided by this utility model offers the advantages of high assembly efficiency and stable transmission. Attached Figure Description

[0025] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model.

[0027] Figure 2 for Figure 1 An explosion diagram.

[0028] Figure 3 for Figure 2 A schematic diagram of the eccentric part.

[0029] Figure 4 for Figure 1 A cross-sectional diagram.

[0030] Figure 5 for Figure 4 An enlarged diagram of position D1.

[0031] Figure 6 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0032] Figure 7 for Figure 6 A cross-sectional diagram.

[0033] Figure 8 for Figure 7 An enlarged view of position D2 in the middle.

[0034] Explanation of reference numerals in the attached figures: 100. Housing; 200. Bracket; 1. Integrated drive assembly; 11. Housing; 12. Motor; 121. Motor shaft; 13. Eccentric part; 131. Large end; 132. Small end; 133. Slot; 134. Axial limiting surface; 14. Bearing; 2. Transmission connecting part; 21. Abutment end face; 3. Transmission rod; 31. Countersunk groove; 4. Fastening assembly; 41. Screw; 42. Washer. Detailed Implementation

[0035] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0036] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] Example 1 See Figures 1 to 5 This utility model embodiment provides a fascia gun transmission mechanism for use with a fascia gun.

[0039] Specifically, the fascia gun transmission mechanism includes an integrated drive assembly 1, a transmission connector 2, and a transmission rod 3; wherein, the transmission connector 2 connects the integrated drive assembly 1 and the transmission rod 3 to transmit the power of the integrated drive assembly 1 to the transmission rod 3; the integrated drive assembly 1 includes a housing 11, a motor 12, and an eccentric part 13, and the motor 12 and the eccentric part 13 are both integrated and installed in the housing 11 so as to be installed synchronously with the housing 11.

[0040] It is easy to understand that in the above solution, the eccentric part 13 is directly integrated into the housing 11. When assembling the fascia gun, the user only needs to connect the transmission rod 3 and the eccentric part 13 of the integrated drive assembly 1 through the transmission connector 2. Compared with the existing installation method of first installing the motor 12, then assembling the transmission rod 3, bearing 14, and eccentric part 13, and finally connecting the eccentric part 13 and the motor 12 through fasteners, the fascia gun assembly process requires fewer structures to be assembled, which can avoid the situation of omissions that are easily caused by manually assembling multiple parts, and at the same time, it can also increase assembly efficiency.

[0041] Furthermore, it should be understood that since the integrated drive assembly 1 is a single, disassembled unit, it has an eccentric part 13, which enables the eccentric movement of the fascia gun, making it suitable for different fascia guns. Moreover, during assembly, only different types of transmission connectors 2 (such as those with different diameters and structures) need to be replaced.

[0042] In eccentric motion, the mass distribution of the moving parts of the transmission mechanism (such as the eccentric structure) directly affects the magnitude of the inertial force.

[0043] See Figures 2 to 5 To avoid unnecessary inertial forces generated by the eccentric portion 13 and thus reduce the impact of inertial forces on the motor shaft 121, the eccentric portion 13 in this embodiment includes a large end 131 and a small end 132, which are eccentrically positioned. The center of the large end 131 is connected to the motor shaft 121 of the motor 12, and the small end 132 protrudes from the large end 131 and is used to connect to the central area of ​​the transmission connector 2. Compared to directly using an eccentric block structure of the same thickness (such as a circular plate with a rotation center offset from the center), this configuration effectively reduces the mass of the eccentrically moving part, thereby effectively reducing unnecessary inertial forces, lowering the load on the motor shaft 121, and further improving the stability of the transmission.

[0044] It is worth noting that the central axis of the large end 131 coincides with the central axis of the motor shaft 121, that is... Figure 4 L3 in the diagram. The central axis of the small end 132 coincides with the central axis of the transmission connector 2, that is... Figure 4 L1.

[0045] Furthermore, a slot 133 is recessed in the central area of ​​one side face of the large end 131. The slot 133 is used to engage with the motor shaft 121 of the motor 12, which allows the motor shaft 121 to extend into the large end 131, ensuring the connection stability between the two and further ensuring the transmission stability of the two.

[0046] It is worth noting that the large end 131 is relatively fixed to the motor shaft 121 so that the large end 131 can rotate synchronously with the motor shaft 121. Any existing fixed connection scheme can be used, as long as it enables synchronous operation. For example, a locking rod extending radially along the large end 131 can be used to connect the large end 131 and the motor shaft 121, as shown in the figure.

[0047] Furthermore, along the axial direction of the small end 132 away from the large end 131 (i.e.) Figure 3 (As shown in the Z direction); the small end 132 is arranged in a stepped shape with a gradually decreasing diameter.

[0048] It is easy to understand that by setting the small end 132 in a stepped shape with a gradually decreasing diameter, the mass of the small end 132 can be reduced to a certain extent, thereby reducing the impact on the motor shaft 121 caused by the eccentric setting of the small end 132 relative to the large end 131. At the same time, this setting also allows the diameter of the end where the small end 132 connects to the large end 131 to be relatively large, increasing the connection area between the small end 132 and the large end 131, which can increase the stability of the connection between the small end 132 and the large end 131 to a certain extent, and prevent the connection point between the small end 132 and the large end 131 from being prone to breakage.

[0049] See Figure 4 and Figure 5 The transmission connector 2 is rotatably mounted on the outer periphery of the small end 132; the outer periphery of the small end 132 is provided with an axial limiting surface 134; the fascia gun transmission mechanism also includes a fastening component 4, which is fixedly connected to the small end 132 to press the transmission connector 2 to the axial limiting surface 134.

[0050] It is easy to understand that by setting the fastening component 4 and the axial limiting surface 134, the axial limiting of the transmission connector 2 can be achieved, so as to avoid axial runout during the reciprocating motion, which is conducive to ensuring the stable transmission of the transmission connector 2.

[0051] It is worth noting that "outer peripheral side" here refers to the outer wall surface of the small end 132. In this embodiment, since the small end 132 is stepped, it has a diameter change position, and the axial limiting surface 134 is the end face formed at the diameter change position.

[0052] Furthermore, the transmission connector 2 has an abutment end face 21 that abuts against the axial limiting surface 134. Specifically, the transmission connector 2 abuts against the axial limiting surface 134 through the abutment end face 21, thereby increasing the abutment area between the transmission connector 2 and the small end 132, and further enhancing the axial limiting effect of the transmission connector 2. At the same time, the abutment end face 21 abuts against the axial limiting surface 134, enabling the positioning and installation of both, preventing the transmission connector 2 from having an axial tilting tendency relative to the small end 132, thereby reducing or even eliminating the shearing force exerted by the transmission connector 2 on the small end 132 to a certain extent, and preventing the small end 132 from deforming or even breaking.

[0053] Furthermore, the fastening assembly 4 includes a screw 41 and a washer 42, wherein the screw 41 passes through the washer 42 and is threaded to the small end 132, and the washer 42 is pressed between the transmission connector 2 and the screw 41. It is easy to understand that the washer 42 not only prevents the screw 41 from loosening, but also increases the limiting area between the transmission connector 2 and the fastening assembly 4, further increasing the installation stability of the transmission connector 2.

[0054] See Figures 2 to 5 In order to increase the connection stability between the transmission rod 3 and the transmission connector 2, a groove 31 is provided on one side of the transmission rod 3, and the groove 31 is fitted onto the outer periphery of the transmission connector 2. The side wall of the groove 31 abuts against the side wall of the transmission connector 2, which can prevent the transmission rod 3 from tilting away from the end face of the transmission connector 2 to a certain extent, ensuring stable transmission between the two, and also facilitating the assembly of the two.

[0055] It is worth noting that "the side wall of the countersink 31 abuts against the side wall of the transmission connector 2" indicates the relative positional relationship between the countersink 31 and the transmission connector 2, and also indicates that the transmission rod 3 can move synchronously with the transmission connector 2. Specifically, an interference fit can be used between the countersink 31 and the transmission connector 2, thereby ensuring a tight connection between the transmission rod 3 and the transmission connector 2, which to a certain extent avoids axial runout of the transmission rod 3. At the same time, it also prevents the transmission rod 3 from deviating from the plane where the end face of the transmission connector 2 is located (i.e., parallel to the plane). Figure 4 The inclination of L2 (and the plane perpendicular to L2).

[0056] Of course, in other embodiments, the groove 31 and the transmission connector 2 can adopt a transition fit or a clearance fit, which can achieve transmission while reducing the installation difficulty. In this case, other limiting structures can be used to limit the transmission rod 3 (such as limiting blocks, guide grooves, etc.) to prevent the transmission rod 3 from tilting away from the end face of the transmission connector 2.

[0057] Furthermore, the bottom wall of the settling tank 31 abuts against the contact end face 21 of the transmission connector 2, which can further prevent the transmission rod 3 from axially running.

[0058] See Figures 1 to 5 The integrated drive assembly 1 also includes a bearing 14; the bearing 14 is sleeved on the outer periphery of the large end 131, and the outer wall surface of the bearing 14 abuts against the inner wall surface of the housing 11.

[0059] It is easy to understand that the bearing 14 is sleeved on the large end 131 and integrated and fixed inside the housing 11, which can ensure the stable operation of the large end 131 without increasing the assembly difficulty of the fascia gun. Moreover, the bearing 14 is directly sleeved on the outer periphery of the eccentric part 13, which can improve the stability of the output of the motor 12.

[0060] Specifically, bearing 14 is configured as rolling bearing 14.

[0061] Example 2 See Figures 6 to 8 Based on the above embodiment one, this embodiment also provides a fascia gun, including a housing 100 and the fascia gun transmission mechanism of embodiment one.

[0062] Specifically, the integrated drive assembly 1 of the fascia gun transmission mechanism is fixedly installed inside the housing 100.

[0063] Furthermore, the fascia gun can use a bracket 200, which has several connection positions. Some of these connection positions (defined as the first connection position for ease of description) are used to connect the housing 100 and the bracket 200 to achieve stable installation of the bracket 200. Other connection positions (defined as the second connection position for ease of description) are used to connect the housing 11 of the integrated drive assembly 1 to achieve stable connection of the integrated drive assembly 1.

[0064] Furthermore, the first connection point may be about the central axis of the integrated drive assembly 1 (see...). Figure 7 The L3 connections are symmetrically distributed. Similarly, the second connection point can also be located about the central axis of the integrated drive assembly 1 (see...). Figure 7 The L3 group is symmetrically distributed.

[0065] Furthermore, the second connection point is closer to the central axis of the integrated drive assembly 1 than the first connection point (see...). Figure 7 (Middle L3).

[0066] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A fascia gun transmission mechanism for use with a fascia gun; characterized in that, The fascia gun transmission mechanism includes an integrated drive assembly (1), a transmission connector (2), and a transmission rod (3). The transmission connector (2) is connected between the integrated drive assembly (1) and the transmission rod (3) to transmit the power of the integrated drive assembly (1) to the transmission rod (3). The integrated drive assembly (1) includes a housing (11), a motor (12) and an eccentric part (13). The motor (12) and the eccentric part (13) are both integrated and installed in the housing (11) so as to be installed synchronously with the housing (11).

2. The fascia gun transmission mechanism according to claim 1, characterized in that, The eccentric portion (13) includes a large end (131) and a small end (132), and the large end (131) and the small end (132) are eccentrically disposed; A slot (133) is recessed in the center area of ​​one side face of the large end (131), and the slot (133) is used to be inserted and engaged with the motor shaft (121) of the motor (12). The small end (132) protrudes from the large end (131) and is used to connect with the central area of ​​the transmission connector (2).

3. The fascia gun transmission mechanism according to claim 2, characterized in that, Along the axial direction of the small end (132) away from the large end (131); The small end (132) is arranged in a stepped shape with a gradually decreasing diameter.

4. A fascia gun transmission mechanism according to claim 2 or 3, characterized in that, The transmission connector (2) is rotatably mounted on the outer periphery of the small end (132); An axial limiting surface (134) is provided on the outer periphery of the small end (132). The fascia gun transmission mechanism also includes a fastening assembly (4), which is fixedly connected to the small end (132) to press the transmission connector (2) onto the axial limiting surface (134).

5. The fascia gun transmission mechanism according to claim 4, characterized in that, The transmission connector (2) has an abutting end face (21) that abuts against the axial limiting surface (134).

6. The fascia gun transmission mechanism according to claim 4, characterized in that, The transmission rod (3) has a groove (31) on one side, and is sleeved on the outer periphery of the transmission connector (2) through the groove (31); The side wall of the sink (31) abuts against the side wall of the transmission connector (2).

7. A fascia gun transmission mechanism according to claim 6, characterized in that, The bottom wall of the sink (31) abuts against the contact end (21) of the transmission connector (2).

8. A fascia gun transmission mechanism according to claim 2 or 3, characterized in that, The integrated drive assembly (1) also includes a bearing (14). The bearing (14) is sleeved on the outer periphery of the large end (131), and the outer wall surface of the bearing (14) abuts against the inner wall surface of the housing (11).

9. A fascia gun transmission mechanism according to claim 8, characterized in that, The bearing (14) is configured as a rolling bearing.

10. A fascia gun, characterized in that, It includes a housing (100) and a fascia gun transmission mechanism as described in any one of claims 1-9 above; The fascia gun transmission mechanism includes an integrated drive assembly (1), which is fixedly installed inside the housing (100).

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