CN217582957U - Electromagnetic brake structure and electric wheelchair - Google Patents
Electromagnetic brake structure and electric wheelchair Download PDFInfo
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- CN217582957U CN217582957U CN202221951155.XU CN202221951155U CN217582957U CN 217582957 U CN217582957 U CN 217582957U CN 202221951155 U CN202221951155 U CN 202221951155U CN 217582957 U CN217582957 U CN 217582957U
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Abstract
The utility model relates to a brake equipment technical field especially relates to an electromagnetic brake structure, and this brake structure includes: the electromagnetic driving module comprises a base body, a push rod and an electromagnetic driving module, wherein the base body is provided with a mounting through hole, the push rod can be slidably inserted into the mounting through hole, the bottom of the push rod is connected with a pressing plate, and the pressing plate is positioned at the bottom of the base body; the upper part of the push rod is provided with a mounting groove matched with the eccentric cam; a self-locking position for self-locking of the eccentric cam is arranged in the mounting groove; the eccentric cam is connected with a matched cam rod; the electromagnetic driving module is connected with the cam rod and can drive the cam rod to rotate to a first position so that the pressing plate is abutted to the brake pad to realize braking; the electromagnetic driving module can also drive the cam rod to rotate to a second position, so that the pressing plate is separated from the brake pad, and the brake is released. This application utilizes eccentric cam's auto-lock, can effectually keep the butt laminating of clamp plate and brake block, need not the electromagnetic drive module and must electrically drive the brake always, reduces the power consumption of electromagnetic brake.
Description
Technical Field
The application relates to the technical field of brake equipment, in particular to an electromagnetic brake structure.
Background
The electric wheelchair is also called an electric wheelchair vehicle and is a tool for special people such as disabled, old and weak, medical and clinical rehabilitation patients and the like to replace walking. During the use of the wheelchair, the wheelchair is often braked, and the brake of the wheelchair motor is usually realized by using brake pads or electromagnetic brakes. The existing electromagnetic brake usually brakes by abutting an iron core driving pressing plate of an electromagnetic driving module against a brake pad, although the brake of a wheelchair motor can be realized, in the braking process, the electromagnetic driving module is required to be always in a power-on driving state, and the driving pressing plate is abutted against the brake pad all the time to ensure the braking effect; the power consumption of the electromagnetic brake is high, and the stroke of the electric wheelchair is relatively reduced.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an electromagnetic brake structure avoids current electromagnetic brake structure to need to get electric brake always among the background art, the big problem of power consumption.
The utility model provides a technical scheme as follows:
an electromagnetic brake structure comprising:
the seat body is provided with a mounting through hole,
the push rod can be inserted into the mounting through hole in a sliding mode, the bottom of the push rod is connected with a pressing plate, and the pressing plate is located at the bottom of the seat body; the upper part of the push rod is provided with an installation groove matched with the eccentric cam; a self-locking position for self-locking of the eccentric cam is arranged in the mounting groove; the eccentric cam is connected with a matched cam rod;
the electromagnetic driving module is connected with the cam rod and can drive the cam rod to rotate to a first position, so that the pressing plate is abutted to the brake pad to realize braking; the electromagnetic driving module can also drive the cam rod to rotate to a second position, so that the pressure plate is separated from the brake pad, and the brake is released.
Furthermore, the electromagnetic driving module comprises a first electromagnet and a second electromagnet; the first electromagnet and the second electromagnet are respectively connected with the cam rod, the first electromagnet drives the cam rod to drive the eccentric cam to rotate clockwise, and when the pressing plate is driven to abut against and attach to the brake pad, the eccentric cam is in self-locking position and self-locking; the second electromagnet drives the cam rod to drive the eccentric cam to rotate anticlockwise so as to drive the pressing plate to be separated from the brake pad.
Further, the electromagnetic shielding device comprises a connecting frame, wherein a first electromagnet and a second electromagnet are respectively arranged on two sides of the connecting frame, and iron cores of the first electromagnet and the second electromagnet are respectively connected to the side wall of the connecting frame; a clamping plate is arranged on the connecting frame between the first electromagnet and the second electromagnet, and the cam rod is connected to the clamping plate.
Furthermore, a first spring is arranged on an iron core of the first electromagnet and/or the second electromagnet, and the first spring is arranged close to the side wall of the connecting frame.
Furthermore, a second spring is sleeved on the push rod close to the end of the pressing plate.
Further, this application includes manual switch mechanism, manual switch mechanism includes the handle, the rotatable installation of handle in pedestal, handle one end are handheld portion, and the handle other end is butt portion, and when rotating handle, butt portion can drive the cam lever and rotate to the second position.
Further, the manual switch mechanism further comprises a travel switch, the travel switch is arranged on a rotation path of the abutting portion, and the travel switch is used for acquiring a rotation state of the handle.
Furthermore, the electromagnetic brake structure is arranged on a rear end cover of the brake motor, and the rear end cover is detachably connected with the brake motor; a motor shaft sleeve positioned on the rear end cover is provided with a brake pad capable of rotating along with the motor shaft, and the electromagnetic driving module drives a pressing plate at the bottom of the push rod to abut against and attach to the brake pad to realize braking; the brake block is separated from the pressure plate to release the brake.
Further, this application still includes the accumulate component, accumulate component with the electromagnetic drive module is connected, and the accumulate component is used for giving the electromagnetic drive module power supply under the power outage condition.
The application also provides an electric wheelchair comprising the electromagnetic brake structure.
Has the advantages that:
according to the electromagnetic brake structure, the upper part of the push rod is provided with a mounting groove matched with the eccentric cam, the mounting groove is provided with the eccentric cam, and the eccentric cam is connected with a matched cam rod; the electromagnetic driving module comprises a first electromagnet and a second electromagnet; the first electromagnet and the second electromagnet are respectively connected with the cam rod, the first electromagnet drives the cam rod to drive the eccentric cam to rotate clockwise so as to enable the pressing plate to abut against the brake pad attached to the motor shaft to realize braking, and the second electromagnet drives the cam rod to drive the eccentric cam to rotate anticlockwise so as to enable the pressing plate to be separated from the brake pad of the motor shaft and release braking; compared with the prior art, the electromagnetic brake structure of this application utilizes eccentric cam's auto-lock, can effectually keep the butt laminating of clamp plate and brake block, saves electromagnetic brake's power consumption greatly.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be 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 described in 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 the electromagnetic brake structure of the present invention when assembled in a motor.
FIG. 2 is a schematic diagram of the electromagnetic brake configuration of FIG. 1;
FIG. 3 is a schematic cross-sectional view of FIG. 2 (excluding the electromagnetic driving module);
fig. 4 is a schematic structural view of the connection frame in fig. 2.
The electromagnetic driving device comprises a base body 1, a base body 2, a push rod 3, a pressing plate 4, an eccentric cam 5, a cam rod 6, an electromagnetic driving module 6.1, a first electromagnet 6.2, a second electromagnet 6.3, an iron core 7, a connecting frame 7.1, a clamping plate 8, a handle 8.1, a handheld part 8.2 and an abutting part. 9. The brake comprises a first spring, 10, a spring, 11, a brake block, 12, a motor, 12.1 and a rear end cover.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings to facilitate the description of the application and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be constructed in operation as a limitation of the application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, the meaning of a plurality of or a plurality of is two or more unless specifically limited otherwise.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure to be understood and read by those skilled in the art, and are not used for limiting the practical limitations of the present disclosure, so they do not have the essential technical meaning, and any modifications of the structures, changes of the ratio relationships, or adjustments of the sizes, should still fall within the scope of the technical disclosure of the present disclosure without affecting the function and the achievable purpose of the present disclosure.
As shown in fig. 1 to 2, an electromagnetic brake structure includes: the device comprises a base body 1, a push rod 2 and a pressing plate 3, wherein the base body is provided with a mounting through hole, the push rod can be slidably inserted into the mounting through hole, and the pressing plate is positioned at the bottom of the base body; the upper part of the push rod is provided with an installation groove matched with the eccentric cam; a self-locking position for self-locking of the eccentric cam is arranged in the mounting groove; the eccentric cam 4 is arranged in the mounting groove and is connected with a matched cam rod 5; the electromagnetic driving module 6 is connected with the cam rod and can drive the cam rod to rotate to a first position, so that the pressing plate is abutted to the brake pad to realize braking; the electromagnetic driving module can also drive the cam rod to rotate to a second position, so that the pressing plate is separated from the brake pad, and the brake is released.
In the above scheme, the electromagnetic brake structure of this application utilizes eccentric cam's auto-lock, can effectually keep the butt laminating of clamp plate and brake block, need not the electromagnetic drive module and has always been the electric drive brake, effectively reduces electromagnetic brake's power consumption.
As a preferred embodiment, the electromagnetic drive module 6 comprises a first electromagnet 6.1 and a second electromagnet 6.2; the first electromagnet and the second electromagnet are respectively connected with the cam rod, the first electromagnet drives the cam rod to drive the eccentric cam to rotate clockwise, and when the pressing plate is driven to abut against and attach to the brake pad for braking, the eccentric cam is in self-locking position and self-locking of the mounting groove; the second electromagnet drives the cam rod to drive the eccentric cam to rotate anticlockwise so as to drive the pressing plate to be separated from the brake pad.
More preferably, the electromagnetic shielding device comprises a connecting frame 7, wherein a first electromagnet and a second electromagnet are respectively arranged at two sides of the connecting frame, and iron cores 6.3 of the first electromagnet and the second electromagnet are respectively connected to the side wall of the connecting frame; a clamping plate 7.1 is arranged on the connecting frame between the first electromagnet and the second electromagnet, and the cam rod is connected with the clamping plate; the clamping plate is provided with a clamping groove or a clamping hole, and the free end of the cam rod is clamped in the clamping groove or the clamping hole, which is shown in detail in figure 4.
The connecting frame converts the required rotation of the cam rod into translation or swing of the connecting frame; in addition, the first electromagnet and the second electromagnet are integrated into a whole by the connecting frame, so that when one electromagnet of the first electromagnet and the second electromagnet acts, the other electromagnet can be driven.
As a preferred embodiment, a first spring 9 is arranged on the iron core of the first electromagnet and/or the second electromagnet, and the first spring is arranged close to the side wall of the connecting frame; the first spring has a buffering function and can apply certain elastic force to the connecting frame at the same time so as to reduce the driving force required to be applied by the electromagnetic driving module.
In a preferred embodiment, a second spring 10 is sleeved on the push rod close to the end of the pressing plate. Referring to fig. 3, the upper part and the lower part of the mounting through hole have different calibers, the caliber of the upper part of the mounting through hole is smaller than the caliber of the lower part of the mounting through hole, a second spring is sleeved on a push rod positioned at the lower part of the mounting through hole, the second spring can apply downward elastic force to the push rod, and the brake structure is convenient to brake, or the second spring can apply upward force to the push rod, so that the brake is convenient to release; corresponding pretightning force can be exerted on the one hand in this second spring setting, and on the other hand can balance other internal forces of synthesizing and external acting force. It should be noted that the elastic force that can be applied by the first spring is much smaller than the elastic force that can be applied by the second spring.
As a preferred embodiment mode, this application includes manual switch mechanism, manual switch mechanism includes handle 8, the rotatable installation of handle in the pedestal, 8 one ends of handle are handheld portion 8.1, and the handle other end is butt portion 8.2, and when rotating the handle, butt portion can drive the cam lever and rotate to the second position. Referring to fig. 1 and 2, in the present embodiment, the abutting portion abuts against the outer side wall of the connecting frame; when the handle is rotated, the connecting frame is driven to translate, and the push rod is driven to ascend through the matching of the cam rod and the cam, so that the brake is released. The manual switch can realize the brake release when the power is off or fails, and particularly when the manual switch is applied to an electric wheelchair, the wheelchair can still be pushed to walk after the power is off through the manual brake release.
More preferably, the manual switch mechanism further includes a travel switch provided on a rotation path of the abutting portion, the travel switch being configured to acquire a rotation state of the handle. The travel switch of this embodiment sets up on the point of separating of butt portion rotation path, and when butt portion bumped travel switch, the clamp plate separated with the brake block and separated and separate the braking.
As a preferred embodiment, the electromagnetic brake structure is arranged on a rear end cover 12.1 of the brake motor, and the rear end cover is detachably connected with the brake motor; a motor shaft sleeve positioned on the rear end cover is provided with a brake pad capable of rotating along with the motor shaft, and the electromagnetic driving module drives a pressing plate at the bottom of the push rod to abut against and attach to the brake pad to realize braking; the brake pad is separated from the pressure plate to release braking; the utility model provides an electromagnetic brake structure can direct mount in the rear end cap of motor, does not change the pivot of motor on the 12 structure bases of motor and brakes, can be with the help of the market application basis of current motor, and development prospect is good.
The application also comprises an electricity storage element, wherein the electricity storage element is connected with the electromagnetic driving module, and the electricity storage element supplies power to the electromagnetic driving module under the condition that the power supply is cut off.
The application also provides an electric wheelchair comprising the electromagnetic brake structure.
The beneficial effect of this application electronic wheelchair car corresponds with the electromagnetic brake structure of this application, and the repetition is not repeated and is repeated.
It should be noted that the prior art is not described in detail in the above technical solutions.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An electromagnetic brake structure, comprising:
the seat body is provided with a mounting through hole,
the push rod can be inserted into the mounting through hole in a sliding manner, and the bottom of the push rod is connected with a pressing plate; the upper part of the push rod is provided with an installation groove matched with the eccentric cam; a self-locking position for self-locking of the eccentric cam is arranged in the mounting groove; the eccentric cam is connected with a matched cam rod;
the electromagnetic driving module is connected with the cam rod and can drive the cam rod to rotate to a first position, so that the pressing plate is abutted against and attached to the brake pad to realize braking; the electromagnetic driving module can also drive the cam rod to rotate to a second position, so that the pressure plate is separated from the brake pad, and the brake is released.
2. The electromagnetic brake structure of claim 1, wherein the electromagnetic drive module comprises a first electromagnet and a second electromagnet; the first electromagnet and the second electromagnet are respectively connected with the cam rod, the first electromagnet drives the cam rod to drive the eccentric cam to rotate clockwise, and when the pressing plate is driven to abut against and attach to the brake pad, the eccentric cam is in self-locking position and self-locking; the second electromagnet drives the cam rod to drive the eccentric cam to rotate anticlockwise so as to drive the pressing plate to be separated from the brake pad.
3. The electromagnetic brake structure of claim 2, comprising a connecting frame, wherein the first electromagnet and the second electromagnet are respectively arranged at two sides of the connecting frame, and iron cores of the first electromagnet and the second electromagnet are respectively connected to the side wall of the connecting frame; a clamping plate is arranged on the connecting frame between the first electromagnet and the second electromagnet, and the cam rod is connected to the clamping plate.
4. An electromagnetic brake structure according to claim 3, wherein the iron core of the first electromagnet and/or the second electromagnet is provided with a first spring, and the first spring is arranged close to the side wall of the connecting frame.
5. An electromagnetic brake structure as claimed in any one of claims 1 to 4, wherein the push rod near the end of the pressure plate is sleeved with a second spring.
6. An electromagnetic brake structure according to claim 5, comprising a manual switch mechanism, wherein the manual switch mechanism comprises a handle, the handle is rotatably mounted on the base, one end of the handle is a handheld portion, and the other end of the handle is an abutting portion, and when the handle is rotated, the abutting portion can drive the cam rod to rotate to the second position.
7. An electromagnetic brake structure according to claim 6, wherein the manual switch mechanism further includes a travel switch provided on a rotation path of the abutting portion, the travel switch being configured to acquire a rotation state of the handle.
8. The electromagnetic brake structure of claim 7, wherein the electromagnetic brake structure is mounted on a rear end cover of the brake motor, and the rear end cover is detachably connected with the brake motor; a motor shaft sleeve positioned on the rear end cover is provided with a brake pad which can rotate along with the motor shaft, and a pressure plate at the bottom of the push rod is abutted against and attached to the brake pad to realize braking; the brake block is separated from the pressure plate to release braking.
9. The electromagnetic brake structure of claim 7, further comprising an electricity storage element, wherein the electricity storage element is connected to the electromagnetic driving module, and the electricity storage element is used for supplying power to the electromagnetic driving module when the power supply is cut off.
10. An electric wheelchair comprising an electromagnetic brake structure as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221951155.XU CN217582957U (en) | 2022-07-26 | 2022-07-26 | Electromagnetic brake structure and electric wheelchair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221951155.XU CN217582957U (en) | 2022-07-26 | 2022-07-26 | Electromagnetic brake structure and electric wheelchair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217582957U true CN217582957U (en) | 2022-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221951155.XU Active CN217582957U (en) | 2022-07-26 | 2022-07-26 | Electromagnetic brake structure and electric wheelchair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217582957U (en) |
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2022
- 2022-07-26 CN CN202221951155.XU patent/CN217582957U/en active Active
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