CN208132606U - Angle grinder - Google Patents

Abstract

The utility model discloses an angle grinder, which comprises a casing, a grinding disc which is detachably arranged on the casing, a driving device which is contained in the casing and a switch which is electrically connected with the driving device, wherein the driving device is used for driving the grinding disc to rotate, and the switch is used for controlling the driving device to start and stop the grinding disc; the angle grinder further comprises a sensor and a controller, the controller is respectively electrically connected with the sensor and the driving device, the sensor is arranged on the casing, the sensor is used for detecting the vibration of the casing and transmitting the detected vibration information to the controller, and the controller is used for adjusting the power of the grinding sheet driven by the driving device according to the received vibration information. The utility model discloses angle grinder can alleviate user's hand and produce numb tired degree, and the protection human body does not receive the damage.

Description

Angle Grinder

technical field

The utility model relates to the technical field of electric tools, in particular to an angle grinder.

Background technique

Angle grinder is a portable electric tool that uses fiberglass for cutting and grinding. It is mainly used for cutting, grinding and brushing metal and stone. The angle grinder can be replaced with different grinding discs according to actual needs. When the existing angle grinder is working, the vibration generated by the angle grinder is likely to cause numbness and fatigue to the user's hand, especially when the high-power angle grinder is used for a long time under high-intensity and high-frequency vibration, it will damage to the human body.

Therefore, it is necessary to provide a novel angle grinder to solve the above technical problems.

Utility model content

The main purpose of the utility model is to provide an angle grinder, aiming at solving the technical problem that the existing angle grinder tends to cause numbness and fatigue to user's hand during work.

In order to achieve the above object, the angle grinder proposed by the utility model includes a casing, a grinding disc detachably mounted on the casing, a drive device housed in the casing, and a switch electrically connected to the drive device. The device is used to drive the grinding disc to rotate, and the switch is used to control the driving device to start and stop the grinding disc; the angle grinder also includes a sensor and a controller, and the controller is connected to the sensor and the The drive device is electrically connected, the sensor is arranged on the casing, the sensor is used to detect the vibration of the casing and transmit the detected vibration information to the controller, and the controller is used to The vibration information of the driving device is used to adjust the power of the driving device to drive the grinding disc.

Preferably, the casing includes a main handle and a machine head connected to the main handle, the driving device includes a driving motor and a reduction mechanism connected to the driving motor, and the driving motor is accommodated in the main handle , the deceleration mechanism is accommodated in the machine head, and the grinding plate is installed on the machine head and connected with the deceleration mechanism.

Preferably, the sensor is detachably mounted on the inner wall of the main handle, and the sensor is arranged close to the machine head.

Preferably, a shock-absorbing sheet is arranged between the machine head and the main handle.

Preferably, the angle grinder further includes an auxiliary handle, the auxiliary handle is connected to the machine head, and the included angle between the auxiliary handle and the main handle is 90°-110°.

Preferably, the auxiliary handle includes a connecting rod and a handle sleeve, the connecting rod is connected to the machine head, and the handle sleeve is sleeved on the connecting rod; the handle sleeve includes a handle connected to the connecting rod part and abutment parts protruding from both ends of the holding part in a direction away from the connecting rod.

Preferably, the switch is slidably arranged on the top of the main handle, and the switch is provided with a toggle protrusion and anti-skid lines on both sides of the toggle protrusion.

Preferably, the angle grinder further includes a protective cover covering the grinding disc, and the protective cover is located between the machine head and the grinding disc.

Preferably, a cooling hole is opened on the end of the main handle away from the machine head.

Preferably, the vibration information includes vibration intensity information, vibration frequency information and vibration duration information.

In the technical solution of the utility model, by setting the sensor, the angle grinder can adjust the power of the driving device to drive the grinding plate according to the vibration intensity information, vibration frequency information and vibration duration information of the shell detected by the sensor, so as to relieve the user's hand. Numb the degree of fatigue and protect the body from damage.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the present utility model, and those skilled in the art can also obtain other drawings according to the structures shown in these drawings without creative work.

Fig. 1 is the three-dimensional schematic diagram of angle grinder of the present invention at a viewing angle;

Fig. 2 is a three-dimensional schematic view of the angle grinder of the present invention at another angle of view;

Fig. 3 is a schematic plan view of the utility model angle grinder.

Explanation of reference numbers:

The realization of the purpose of the utility model, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

In addition, in the present application, descriptions such as "first", "second" and so on are used for description purposes only, and should not be understood as indicating or implying their relative importance or implicitly indicating the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, the terms "connection" and "fixation" should be understood in a broad sense, for example, "fixation" can be a fixed connection, a detachable connection, or an integration; It may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediary, and it may be an internal communication between two elements or an interaction relationship between two elements, unless otherwise clearly defined. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In addition, the technical solutions of the various embodiments of the present invention can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered as the technical solution. Combination does not exist, nor is it within the scope of protection required by the utility model.

The utility model provides an angle grinder.

Referring to Fig. 1 and Fig. 2, in an embodiment of the present invention, the angle grinder 10 includes a casing 1, a grinding disc 2 detachably mounted on the casing 1, and a driving device housed in the casing 1 ( Not shown in the figure) and a switch 3 electrically connected to the driving device, the driving device is used to drive the grinding disc 2 to rotate, and the switch 3 is used to control the driving device to start and stop the grinding disc 2; the angle grinder 10 also includes a sensor (not shown) and A controller (not shown in the figure), the controller is electrically connected to the sensor and the driving device respectively, the sensor is arranged on the casing 1, the sensor is used to detect the vibration of the casing 1 and transmits the detected vibration information to the controller, and the controller is used for Adjust the power of the driving device to drive the grinding disc 2 according to the received vibration information. In this embodiment, the vibration information includes vibration intensity information, vibration frequency information, and vibration duration information.

Specifically, when using the angle grinder 10, the user will select a suitable grinding disc 2 according to actual needs. The grinding disc 2 can be a grinding wheel disc, a metal cutting disc, a woodworking cutting disc, a sponge wheel and a louver wheel in the prior art. . Install the grinding plate 2 on the casing 1, the user holds the casing 1, starts the switch 3, and the driving device drives the grinding piece 2 to rotate, so as to grind, cut, derust and polish metal components or stones. During the working process of the angle grinder 10, the sensor detects the vibration intensity, vibration frequency and vibration duration of the casing 1, and the sensor sends the detected vibration intensity information, vibration frequency information and vibration duration information of the casing 1 to The controller, after receiving the vibration intensity information, vibration frequency information and vibration duration information, the controller judges whether the vibration intensity of the casing 1 has reached the preset intensity threshold, and if it reaches the preset intensity threshold, continues to judge the vibration intensity of the casing 1 Whether the vibration frequency of the vibration frequency reaches the preset frequency threshold, if it reaches the preset frequency threshold, then continue to judge whether the vibration duration of the casing 1 has reached the preset duration threshold, if it reaches the preset duration threshold, the controller The power of the driving device to drive the grinding plate 2 is appropriately reduced to reduce the vibration intensity and vibration frequency of the casing 1, thereby alleviating the degree of numbness and fatigue of the user's hands and protecting the human body from damage.

It can be understood that when it is judged that the vibration intensity, vibration frequency and vibration duration of the casing 1 are correspondingly less than the preset intensity threshold, the preset frequency threshold and the preset duration threshold, or when it is judged that the vibration intensity of the casing 1 is When one or both of the vibration intensity, vibration frequency or vibration duration of 1 is less than the preset intensity threshold, the preset frequency threshold and the preset duration threshold, the controller does not need to adjust the driving device to drive The power of grinding disc 2. The user can set the preset intensity threshold, the preset frequency threshold and the preset duration threshold according to the actual usage of the angle grinder 10 .

In this embodiment, by setting the sensor, the angle grinder 10 can adjust the power of the driving device to drive the grinding disc 2 according to the vibration intensity information, vibration frequency information and vibration duration information of the housing detected by the sensor, so as to relieve the user's hand. Numb the degree of fatigue and protect the body from damage.

In this embodiment, the casing 1 includes a main handle 11 and a machine head 12, the machine head 12 is connected to the front end of the main handle 11, the driving device includes a driving motor and a reduction mechanism connected with the driving motor, and the driving motor is accommodated in the main handle 11 , The deceleration mechanism is accommodated in the nose 12, which has the advantage of compact structure. The grinding disc 2 is installed on the machine head 12 and is connected with the decelerating mechanism, and the driving motor controls the rotation of the grinding disc 2 through the decelerating mechanism, and the design is reasonable. Both the driving motor and the speed reduction mechanism of this embodiment can adopt the prior art.

Further, the sensor is detachably installed on the inner wall of the main handle 11 , and the sensor is arranged close to the machine head 12 . When the user uses the angle grinder 10, one hand directly holds the main handle 11, sets the sensor on the main handle 11, and makes the position of the sensor close to the machine head 12, so that the angle grinder can be detected more directly and accurately. 10 The vibration intensity, vibration frequency and vibration duration of the main handle 11 during operation reflect the vibration intensity, vibration frequency and vibration duration felt by the user's hands. In addition, the sensor is detachably installed on the inner wall of the main handle 11, which is beneficial to simplify the structure and facilitate disassembly and maintenance.

In this embodiment, a shock-absorbing plate (not shown) is arranged between the machine head 12 and the main handle 11, which reduces the vibration transmitted from the machine head 12 to the main handle 11 when the grinding plate 2 rotates, and further eases the vibration of the main handle 11 held on the main handle. The user's hand on the handle 11 produces a degree of numbness and fatigue.

In a further technical solution, the angle grinder 10 also includes an auxiliary handle 4 connected to the machine head 12 . When the user uses the angle grinder 10, one of the hands holds the main handle 11, and the other hand holds the auxiliary handle 4, which is convenient for the user to hold the angle grinder 10 with both hands at the same time, which is beneficial to metal components or stones. Grinding, cutting, derusting, polishing and other processing. Please refer to FIG. 3 , preferably, the included angle between the auxiliary handle 4 and the main handle 11 is α, α=90°-110°, which is convenient for users to operate.

In this embodiment, the auxiliary handle 4 includes a connecting rod 41 and a handle sleeve 42 , the connecting rod 41 is connected to the machine head 12 , and the handle sleeve 42 is sheathed on the connecting rod 41 . Preferably, the handle sleeve 42 can be made of stretchable material such as rubber, so as to facilitate the user to hold and reduce the shock suffered.

The handle sleeve 42 in this embodiment includes a handle portion 421 connected to the connecting rod 41 and abutting portions 422 protruding from both ends of the handle portion 421 in a direction away from the connecting rod 41 . By providing the grip portion 421 , it is possible to prevent the relative displacement between the hand and the grip portion 421 due to the vibration of the angle grinder 10 when the user grips the auxiliary handle 4 . The abutment portion 422 acts as a limit protection, preventing the user's hand from getting too close to the abrasive disc 2 and causing danger.

In this embodiment, the switch 3 is slidably arranged on the top of the main handle 11 , preferably, the switch 3 is arranged close to the machine head 12 . The switch 3 is provided with a toggle protrusion 31 and anti-skid lines 32 arranged on both sides of the toggle protrusion 31 . During use, the finger of the user moves the toggle projection 31 forward, the switch 3 slides forward, and the control drive device is turned on; the user's finger moves the toggle projection 31 backward, the switch 3 slides backward, and the control drive device stops . The anti-slip lines 32 make it difficult for the user's fingers to slip when the user's fingers are toggling the toggle protrusion 31 .

In this embodiment, the angle grinder 10 further includes a protective cover 5 covering the grinding disc 2 , and the protective cover 5 is located between the machine head 12 and the grinding disc 2 . The protective cover 5 can prevent splashes or sparks generated when the angle grinder 10 grinds or cuts metal components or stones, and protects the human body from damage.

In this embodiment, the end of the main handle 11 away from the machine head 12 is provided with a cooling hole 6 to facilitate air convection with the outside world and heat dissipation of the drive motor located in the main handle 11 . It can be understood that in this embodiment, the cooling holes 6 may also be provided on the machine head 12 to facilitate the heat dissipation of the reduction mechanism located in the machine head 12 .

The above are only preferred embodiments of the present utility model, and are not therefore limiting the patent scope of the present utility model. Under the conception of the present utility model, the equivalent structural transformations made by utilizing the specification of the utility model and the contents of the accompanying drawings, or direct/indirect Application in other related technical fields is included in the patent protection scope of the present utility model.

Claims (10)

1. An angle grinder, characterized in that it comprises a casing, a grinding disc detachably mounted on the casing, a drive device accommodated in the casing and a switch electrically connected to the drive device, the drive device It is used to drive the grinding disc to rotate, and the switch is used to control the driving device to start and stop the grinding disc; the angle grinder also includes a sensor and a controller, and the controller is connected to the sensor and the The drive device is electrically connected, the sensor is arranged on the casing, the sensor is used to detect the vibration of the casing and transmit the detected vibration information to the controller, and the controller is used to The vibration information adjusts the power of the driving device to drive the grinding disc. 2. The angle grinder according to claim 1, wherein the housing includes a main handle and a machine head connected to the main handle, and the driving device includes a driving motor and a motor connected to the driving motor. A deceleration mechanism, the driving motor is accommodated in the main handle, the deceleration mechanism is accommodated in the machine head, and the grinding plate is installed on the machine head and connected with the deceleration mechanism. 3. The angle grinder according to claim 2, wherein the sensor is detachably mounted on the inner wall of the main handle, and the sensor is arranged close to the machine head. 4. The angle grinder according to claim 2, characterized in that a shock-absorbing plate is arranged between the machine head and the main handle. 5. The angle grinder according to claim 2, characterized in that, the angle grinder further comprises a secondary handle, the secondary handle is connected to the machine head, and the gap between the secondary handle and the main handle The included angle is 90°-110°. 6. The angle grinder according to claim 5, wherein the auxiliary handle comprises a connecting rod and a handle sleeve, the connecting rod is connected to the machine head, and the handle sleeve is sleeved on the connecting rod ; The grip sleeve includes a grip portion connected to the connecting rod and abutting portions protruding from both ends of the grip portion in a direction away from the connecting rod. 7. The angle grinder according to claim 2, wherein the switch is slidably arranged on the top of the main handle, and the switch is provided with a toggle protrusion and anti-slip grips on both sides of the toggle protrusion. pattern. 8. The angle grinder according to claim 2, characterized in that, the angle grinder further comprises a protective cover covering the grinding disc, the protective cover is located between the machine head and the grinding disc between. 9 . The angle grinder according to claim 2 , wherein a cooling hole is opened on the end of the main handle away from the machine head. 10 . 10. The angle grinder according to any one of claims 1-9, wherein the vibration information includes vibration intensity information, vibration frequency information and vibration duration information.