Electric tool
By adding a second fixed fulcrum and support to the power tool, the problem of poor contact between the contact switch and the control board substrate was solved, resulting in more stable support and a longer service life.
Patent Information
- Application Number
- CN202520042360.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-01-08
AI Technical Summary
In existing power tools, the distance between the contact switch and the fixed support point of the control board base plate is too large, which can easily lead to poor contact during long-term use and affect the user experience.
By adding a second fixed fulcrum to the power tool, the distance between the contact switch and the fixed fulcrum is shortened, and the end and middle of the control board base plate are stably supported by the support member, reducing the amount of deformation when the control button is pressed down.
This effectively reduces the risk of poor contact between the contact switch and the control board substrate, improves the service life of power tools, and does not affect the ease of operation.
Smart Images
Figure CN223643659U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of operating tool technology, and more specifically, to a power tool. Background Technology
[0002] The control buttons on power tools such as screwdrivers and electric drills are generally push-to-trigger buttons. A contact switch is located on the bottom side of the control button, and the contact switch is soldered to the control board substrate and electrically connected to the control board substrate. The user can activate the contact switch by pressing down on the control button.
[0003] In the prior art, the distance between the two fixed support points of the contact switch and the control board substrate is too large. When the control button is pressed down to push down the contact switch, the area on the control board substrate located between the two fixed support points will bend downward into an arc shape. During long-term use, there is a high probability that poor contact will occur between the contact switch and the control board substrate, affecting the user experience. Utility Model Content
[0004] The purpose of this application is to address the shortcomings of the prior art by providing an electric tool that can significantly reduce the risk of poor contact between the contact switches and the control board substrate within the machine's lifespan without altering the existing button layout or affecting ease of use.
[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of this application are as follows:
[0006] This application provides an embodiment of an electric tool, including: a housing, a support member disposed within the housing, a control board base plate, a motor, and an output shaft driven by the motor; the housing is provided with an operation button, and the surface of the control board base plate facing the operation button is provided with a contact switch, the contact switch and the motor are electrically connected to the control board base plate respectively, and the contact switch corresponds to the position of the operation button; the support member is provided with a first fixed support point, a second fixed support point and a third fixed support point in sequence along a preset direction, the surface of the control board base plate away from the operation button abuts against the first fixed support point, the second fixed support point and the third fixed support point, wherein the first fixed support point and the third fixed support point abut against the two ends of the control board base plate respectively, the second fixed support point abuts against the middle of the control board base plate, and the contact switch is located between the first fixed support point and the second fixed support point.
[0007] Optionally, the contact switch includes a first contact switch and a second contact switch. One end of the control button corresponds to the position of the first contact switch and the other end corresponds to the position of the second contact switch. Both the first contact switch and the second contact switch are electrically connected to the control board substrate. Both the first contact switch and the second contact switch are located between the second fixed support point and the first fixed support point.
[0008] Optionally, the first contact switch and the second contact switch are spaced apart along a preset direction.
[0009] Optionally, the support includes a first support and a second support connected to the first support, the first support and the second support enclosing a receiving space, and the control board substrate is fixed in the receiving space.
[0010] Optionally, one of the first support member and the second support member is provided with a buckle, and the other is provided with a slot that cooperates with the buckle, so that the buckle is engaged in the slot.
[0011] Optionally, one of the first support member and the second support member is provided with a first pin, and the other is provided with a first insertion hole that cooperates with the first pin, and the first pin is inserted into the first insertion hole.
[0012] Optionally, one of the support member and the housing is provided with a limiting groove, and the other is provided with a limiting protrusion that cooperates with the limiting groove. The limiting groove and the limiting protrusion are used to limit the rotation of the support member.
[0013] Optionally, the first end of the support abuts against the housing.
[0014] Optionally, one of the second end of the support member and the motor is provided with a second pin, and the other is provided with a second insertion hole that mates with the second pin. The second pin is inserted into the second insertion hole, and the second end is opposite to the first end.
[0015] Optionally, the distance between the contact switch and the second fixed support point is less than or equal to 20mm, and the distance between the contact switch and the first fixed support point is less than or equal to 20mm.
[0016] The beneficial effects of this application include:
[0017] This application provides a power tool, including: a housing, a support member disposed within the housing, a control board base plate, a motor, and an output shaft driven by the motor; the housing is provided with a control button, and a contact switch is provided on the surface of the control board base plate facing the control button. The contact switch and the motor are electrically connected to the control board base plate, and the contact switch corresponds to the position of the control button; the support member is provided with a first fixed support point, a second fixed support point, and a third fixed support point sequentially along a predetermined direction. The surface of the control board base plate facing away from the control button abuts against the first fixed support point, the second fixed support point, and the third fixed support point, wherein the first fixed support point and the third fixed support point abut against the two ends of the control board base plate, the second fixed support point abuts against the middle of the control board base plate, and the contact switch is located between the second fixed support point and the first fixed support point. The support member of the above-mentioned power tool simultaneously supports the ends and the middle of the control board base plate, which can more stably support the control board base plate. Furthermore, the aforementioned power tool places the contact switch between the second fixed support point and the first fixed support point, which greatly reduces the deformation of the control board substrate caused by the pressing of the operation button. Therefore, without changing the existing operation button layout and without affecting the convenience of use, the risk of poor contact between the contact switch and the control board substrate within the lifespan of the power tool can be greatly reduced. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the structure of the power tool provided in the embodiments of this application;
[0020] Figure 2 for Figure 1 Sectional view at point AA;
[0021] Figure 3 A partial cross-sectional view of a power tool provided in an embodiment of this application;
[0022] Figure 4 for Figure 3 A magnified view of a portion of point B in the middle;
[0023] Figure 5 A partial structural schematic diagram of the power tool provided in an embodiment of this application;
[0024] Figure 6 This is a schematic diagram of the structure of the first support member in the power tool provided in the embodiments of this application;
[0025] Figure 7 This is a schematic diagram of the structure of the second support member in the power tool provided in the embodiments of this application;
[0026] Figure 8 This is a schematic diagram illustrating the fit between the support member and the housing in a power tool provided in an embodiment of this application.
[0027] Icons: 10-Power tool; 11-House; 111-Mounting slot; 112-Mounting shaft; 12-Support member; 12a-First support member; 12b-Second support member; 121-First fixed fulcrum; 122-Second fixed fulcrum; 123-Third fixed fulcrum; 124-Hollow hole; 13-Control board base plate; 14-Motor; 15-Output shaft; 16a-Control button; 161-Mounting buckle; 162-First abutting post; 163-Second abutting post; 16b-Adjustment button; 16c-Torque indicator light; 17-Contact switch; 171-First contact switch; 172-Second contact switch; 181-Snap-on; 182-Slot; 183-First pin; 184-First socket; 185-Limiting groove; 186-Limiting protrusion; 187-Second pin; 188-Second socket; 19-Battery cell. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0029] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. It should be noted that, unless otherwise specified, the various features in the embodiments of this application can be combined with each other, and the combined embodiments are still within the protection scope of this application.
[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0031] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application 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 on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0032] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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 application based on the specific circumstances.
[0033] Please refer to Figure 1 and Figure 2 This application provides a power tool 10, including: a housing 11, a support member 12 disposed within the housing 11, a control board base plate 13, a motor 14, and an output shaft 15 driven by the motor 14. The housing 11 serves as the supporting and positioning body for the power tool 10; the support member 12 is fixed within the housing 11 and supports the control board base plate 13; the motor 14 is electrically connected to the control board base plate 13 and drives the output shaft 15 under the control of the control board base plate 13. Various types of working heads can be mounted on the output shaft 15 to handle different working scenarios.
[0034] Please refer to the reference. Figure 3 and Figure 4 The housing 11 is equipped with a control button 16a, which can move inwards when pressed. A contact switch 17 is provided on the surface of the control board substrate 13 facing the control button 16a. The contact switch 17 is electrically connected to the control board substrate 13 and corresponds to the position of the control button 16a. Pressing the control button 16a causes it to press down towards the side where the contact switch 17 is located. The contact switch 17 is triggered by the pressure, and the motor 14 starts to rotate, thereby driving the output shaft 15 to rotate.
[0035] The support member 12 is provided with a first fixed fulcrum 121, a second fixed fulcrum 122, and a third fixed fulcrum 123 sequentially along a preset direction. The first fixed fulcrum 121, the second fixed fulcrum 122, and the third fixed fulcrum 123 are located in the same plane. The preset direction is preferably parallel to the length direction of the control board substrate 13. The surface of the control board substrate 13 opposite to the control button 16a abuts against the first fixed fulcrum 121, the second fixed fulcrum 122, and the third fixed fulcrum 123. The first fixed fulcrum 121 and the third fixed fulcrum 123 abut against the two ends of the control board substrate 13, respectively, and the second fixed fulcrum 122 abuts against the middle part of the control board substrate 13. The contact switch 17 is located between the second fixed fulcrum 122 and the first fixed fulcrum 121.
[0036] Compared to existing technologies, this support member 12 adds a second fixed support point 122 between the first fixed support point 121 and the third fixed support point 123. The second fixed support point 122 effectively shortens the distance between two adjacent fixed support points, providing more stable support for the control board substrate 13. When the control button 16a presses down on the contact switch 17, the deformation of the control board substrate 13 mainly occurs between the second fixed support point 122 and the first fixed support point 121. Since the contact switch 17 is close to both the second and first fixed support points 122 and 121, the deformation of the control board substrate 13 caused by the press of the control button 16a is greatly reduced. This effectively prevents poor contact between the contact switch 17 and the control board substrate 13 after prolonged use, improves the service life of the power tool 10, and reduces the risk of contact switch 17 failure. Preferably, the distance between the contact switch 17 and the second fixed support point 122 is less than or equal to 20 mm, and the distance between the contact switch 17 and the first fixed support point 121 is less than or equal to 20 mm.
[0037] The power tool 10's support member 12 adds a second fixed support point 122 between the first fixed support point 121 and the third fixed support point 123, simultaneously supporting both the ends and the middle of the control board substrate 13. Compared to the prior art, which only supports the two ends of the control board substrate 13, the support member 12 of this application can support the control board substrate 13 more stably. Furthermore, the power tool 10 places the contact switch 17 between the first fixed support point 121 and the second fixed support point 122, greatly reducing the deformation of the control board substrate 13 caused by the pressing of the control button 16a. Therefore, without changing the existing button layout or affecting the ease of use, the risk of poor contact between the contact switch 17 and the control board substrate 13 within the power tool 10's lifespan can be significantly reduced.
[0038] Optionally, the distance between the second fixed support point 122 and the first fixed support point 121 is smaller than the distance between the second fixed support point 122 and the third fixed support point 123, so as to further reduce the deformation of the control board substrate 13 caused by the pressing of the control button 16a. A gear shift button 16b and a torque indicator light 16c can be set between the second fixed support point 122 and the third fixed support point 123, which can also prevent the gear shift button 16b from malfunctioning.
[0039] In order for the power tool 10 to cope with more working scenarios, the motor 14 needs to achieve forward and reverse rotation. The forward and reverse rotation of the motor 14 needs to be controlled by triggering different contact switches 17. Therefore, the contact switches 17 optionally include a first contact switch 171 and a second contact switch 172. Both the first contact switch 171 and the second contact switch 172 are electrically connected to the control board substrate 13. The first contact switch 171 is used to conduct the circuit in the control board substrate 13 that controls the forward rotation of the motor 14, and the second contact switch 172 is used to conduct the circuit in the control board substrate 13 that controls the reverse rotation of the motor 14.
[0040] One end of the control button 16a corresponds to the position of the first contact switch 171, and the other end corresponds to the position of the second contact switch 172. Thus, a single control button 16a can simultaneously control both the first contact switch 171 and the second contact switch 172. Furthermore, when one end of the control button 16a is pressed down, the other end will lift up. Therefore, the control button 16a can only close one of the first contact switch 171 and the second contact switch 172 at a time, while the other will inevitably open, thus preventing accidental operation.
[0041] Both the first contact switch 171 and the second contact switch 172 are located between the second fixed support point 122 and the first fixed support point 121. Therefore, regardless of whether the first contact switch 171 or the second contact switch 172 is triggered, the deformation of the control board substrate 13 is relatively small.
[0042] Optionally, the first contact switch 171 and the second contact switch 172 are spaced apart along a preset direction. This can further reduce the deformation of the control board substrate 13.
[0043] Alternatively, please refer to Figure 3 and Figure 4 The housing 11 is provided with a mounting groove 111, and a mounting shaft 112 is provided in the mounting groove 111. The control button 16a is provided with two opposite mounting buckles 161. Both mounting buckles 161 are engaged with the mounting shaft 112 to realize the installation of the control button 16a.
[0044] Optionally, the control button 16a has a first abutment post 162 and a second abutment post 163 at both ends. The first abutment post 162 corresponds to the position of the first contact switch 171, and the second abutment post 163 corresponds to the position of the second contact switch 172. The heights of the first abutment post 162 and the second abutment post 163 are greater than the height of the mounting buckle 161, thereby avoiding interference between the mounting buckle 161 and the control board substrate 13, and also enabling the control button 16a to smoothly abut against the first contact switch 171 and the second contact switch 172.
[0045] The stable support of the control board base plate 13 depends on the fixing relationship between the support member 12, the housing 11, and the motor 14. Alternatively, please refer to... Figure 2 , Figure 5 and Figure 6 The support member 12 includes a first support member 12a and a second support member 12b connected to the first support member 12a. The first support member 12a and the second support member 12b enclose a receiving space, and the control board substrate 13 is fixed within the receiving space. The first support member 12a and the second support member 12b can fix and protect the control board substrate 13.
[0046] It is understood that the contact switch 17 is exposed on the first support 12a and the second support 12b in order to contact the control button 16a.
[0047] Furthermore, please refer to the following: Figure 6 and Figure 7 The first support member 12a is provided with a first fixed fulcrum 121, a second fixed fulcrum 122 and a third fixed fulcrum 123. The second support member 12b is also provided with a first fixed fulcrum 121, a second fixed fulcrum 122 and a third fixed fulcrum 123. The two first fixed fulcrums 121, the two second fixed fulcrums 122 and the two third fixed fulcrums 123 are respectively arranged opposite to each other.
[0048] After the first support member 12a and the second support member 12b house the control board substrate 13, the two first fixed supports 121 simultaneously support one end of the control board substrate 13, the two second fixed supports 122 simultaneously support the middle of the control board substrate 13, and the two third fixed supports 123 simultaneously support the other end of the control board substrate 13. In this way, the control board substrate 13 can be supported more stably.
[0049] Optionally, one of the first support member 12a and the second support member 12b is provided with a buckle 181 and the other is provided with a slot 182 that cooperates with the buckle 181. The buckle 181 is inserted into the slot 182, thereby connecting the first support member 12a and the second support member 12b together. The connection method of the buckle 181 and the slot 182 also makes the connection between the first support member 12a and the second support member 12b detachable.
[0050] Optionally, one of the first support member 12a and the second support member 12b is provided with a first pin 183 and the other is provided with a first insertion hole 184 that cooperates with the first pin 183, and the first pin 183 is inserted into the first insertion hole 184.
[0051] The first pin 183 extends perpendicularly to the mating surfaces of the first support member 12a and the second support member 12b. When the first support member 12a and the second support member 12b are mated, the first pin 183 is inserted into the first socket 184 to further improve the reliability of the connection between the first support member 12a and the second support member 12b.
[0052] It should be noted that the number of buckles 181 and first pins 183 can be one, two or more, the number of slots 182 is equal to the number of buckles 181 and corresponds one-to-one, and the number of first holes 184 is equal to the number of first pins 183 and corresponds one-to-one.
[0053] Optionally, the power tool 10 also includes a battery cell 19, which provides power for the operation of the power tool 10. The battery cell 19 is also fixed within the accommodating space formed by the first support member 12a and the second support member 12b.
[0054] The first support member 12a and the second support member 12b can fix and protect the battery cell 19. At the same time, the battery cell 19 can also support the first support member 12a and the second support member 12b to prevent deformation. Therefore, the wall thickness of the first support member 12a and the second support member 12b can be relatively thin, thereby reducing weight and space occupation.
[0055] Furthermore, the surfaces of the first support member 12a and the second support member 12b are respectively provided with multiple hollow holes 124. The hollow holes 124 can reduce the weight of the support member 12 on the one hand, and facilitate heat dissipation of the battery cell 19 and exposure of the contact switch 17 on the other hand. The hollow holes 124 can be large or small as needed, and the areas of different hollow holes can be the same or different.
[0056] To secure the support member 12 within the housing 11, optionally, please refer to... Figure 8 One of the support member 12 and the housing 11 is provided with a limiting groove 185 and the other is provided with a limiting protrusion 186 that cooperates with the limiting groove 185. The limiting groove 185 and the limiting protrusion 186 are used to limit the rotation of the support member 12.
[0057] Furthermore, there are two limiting grooves 185, which are arranged opposite each other along the radial direction of the housing 11. Correspondingly, there are also two limiting protrusions 186, which correspond one-to-one with the two limiting grooves 185, so as to improve the stability of the support member 12.
[0058] The limiting protrusion 186 and the limiting groove 185 restrict the rotation of the support member 12. To further restrict the axial movement of the support member 12, optionally, please refer to... Figure 2 and Figure 3 The first end of the support member 12 abuts against the housing 11 to restrict the movement of the support member 12 along the first axis.
[0059] Regarding how the movement of the support member 12 along the second axis, which is opposite to the first axis, is restricted, this embodiment does not provide specific guidance. Optionally, please refer to the reference... Figure 5 The second end of the support member 12 and the motor 14 are provided with a second pin 187 on one end and a second insertion hole 188 on the other end, which mates with the second pin 187. The second pin 187 is inserted into the second insertion hole 188, with the second end opposite to the first end. Through the engagement of the second pin 187 and the second insertion hole 188, the movement of the support member 12 along the second axial direction is restricted by the motor 14. Furthermore, placing the motor 14 on the side of the support member 12 facilitates the electrical connection between the motor 14 and the control board substrate 13 inside the support member 12.
[0060] The second pin 187 extends perpendicularly to the mating surfaces of the support member 12 and the motor 14. When the support member 12 and the motor 14 are mated, the second pin 187 is inserted into the second socket 188. The number of second pins 187 can be one, two, or more, and the number of second sockets 188 corresponds to the number of second pins 187. When there are two or more second pins 187, they are spaced apart along the circumference of the motor 14.
[0061] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A power tool, characterized in that, include: The housing, the support members disposed within the housing, the control board base plate and the motor, and the output shaft driven by the motor; The housing is provided with control buttons, and the surface of the control board base plate facing the control buttons is provided with contact switches. The contact switches and the motor are respectively electrically connected to the control board base plate, and the contact switches correspond to the positions of the control buttons. The support member is provided with a first fixed support point, a second fixed support point, and a third fixed support point in sequence along a preset direction. The surface of the control board substrate facing away from the control button abuts against the first fixed support point, the second fixed support point, and the third fixed support point. The first fixed support point and the third fixed support point abut against the two ends of the control board substrate, respectively. The second fixed support point abuts against the middle part of the control board substrate. The contact switch is located between the second fixed support point and the first fixed support point.
2. The power tool as described in claim 1, characterized in that, The contact switch includes a first contact switch and a second contact switch. One end of the control button corresponds to the position of the first contact switch and the other end corresponds to the position of the second contact switch. Both the first contact switch and the second contact switch are electrically connected to the control board substrate. Both the first contact switch and the second contact switch are located between the first fixed support point and the second fixed support point.
3. The power tool as described in claim 2, characterized in that, The first contact switch and the second contact switch are spaced apart along the preset direction.
4. The power tool as described in claim 1, characterized in that, The support includes a first support and a second support connected to the first support. The first support and the second support enclose a receiving space, and the control board substrate is fixed within the receiving space.
5. The power tool as described in claim 4, characterized in that, One of the first support member and the second support member is provided with a buckle, and the other is provided with a slot that cooperates with the buckle, and the buckle is inserted into the slot.
6. The power tool as described in claim 5, characterized in that, One of the first support member and the second support member is provided with a first pin, and the other is provided with a first insertion hole that cooperates with the first pin, and the first pin is inserted into the first insertion hole.
7. The power tool as claimed in claim 1, characterized in that, One of the support member and the housing is provided with a limiting groove, and the other is provided with a limiting protrusion that cooperates with the limiting groove. The limiting groove and the limiting protrusion are used to restrict the rotation of the support member.
8. The power tool as claimed in claim 1, characterized in that, The first end of the support member abuts against the housing.
9. The power tool as claimed in claim 8, characterized in that, The second end of the support member and the motor are provided with a second pin on one of them and a second insertion hole that cooperates with the second pin on the other. The second pin is inserted into the second insertion hole and the second end is opposite to the first end.
10. The power tool as claimed in claim 1, characterized in that, The distance between the contact switch and the second fixed support point is less than or equal to 20mm, and the distance between the contact switch and the first fixed support point is less than or equal to 20mm.