TW558475B - Power transmission device capable of automatic gear shifting - Google Patents

Abstract

This invention relates to a power transmission device capable of automatic gear shifting, comprising a hollow body forming a base, in which is sequentially assembled with a transmission device and a torque feedback device, characterized in that, the torque feedback device includes a torque-resisting member, such that when the loaded torque is less than the resisting capability, the gear of the declaration means in the transmission device is maintained at the initial gear, when the loaded torque exceeds the resisting capability, a slide ring in the torque feedback device will urge against a gear shift in the transmission device, subjecting the deceleration means in the transmission device to be shifted to another gear. Hence, the power transmission device capable of automatic gear shifting can automatically shift the deceleration means of the power transmission device during increment or decrement of the loaded torque, thereby the gear shift can be shifted automatically to enhance the mechanical efficacy of the power transmission device.

Description

----- V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a transmission device that is capable of passing through—torque back and forth to change the speed. Therefore, the gears are switched: m:-the gear position is changed when the load torque is increased or decreased = the gear shift position of the device: makes it possible to organize. To reduce the speed of the automatic transmission of the power transmission device before the prior technology] Electric drill transmission device, especially as an electric rotary I machine ⑴ :: Electric screwdriver, etc. Device, which works together when the combined speed of ', /, evening' ^. _ Will use a reduction mechanism to provide multi-speed or multi-stage speed control mechanism, mainly by array planetary gear = two twist = 糸The clutch belt structure is controlled by a manual mechanism. A. In the reel, some components are fixed or certain components are driven so as to achieve different wheel-in and wheel-out reduction ratios. Τ 动, [Abstract] _ "Technical Issues to Be Solved" describes the subjective judgment of the conventional speed reduction mechanism of the power transmission device, which needs to be determined by the user through his experience or by observing the processing status during the operation. By manually changing the reduction mechanism it fil S- a Ah plus, from the torque or speed of the operation. The torque of the drive motor of the general reduction mechanism: the speed loss power and mechanical efficiency have a certain relationship, its damage And power equipment: mechanical efficiency of the system generally increases as the product of the torque and the rotational speed of the lift,

Page 5 558475 V. Description of the invention (2) Until the product of torque and speed reaches a certain value, the loss power will continue to increase, but the mechanical efficiency will gradually decrease. However, through manual operation and control, Λ often does not properly make the operation of the drive motor fall within the optimal range of mechanical efficiency. Therefore, a mechanism capable of feeding back the load torque is required to automatically switch the gear position of the speed reduction mechanism, and the present invention is based on the lack of a speed reduction mechanism of a conventional power transmission device for creation. "Technical Means for Solving the Problem" About the present invention, an automatic transmission power transmission device is provided to practically solve one or even several of the aforementioned related technologies. In order to achieve the above object, the present invention provides an automatic transmission power transmission device, which is mainly composed of a hollow casing and a transmission device and a torque feedback device which are sequentially installed in the body, and is characterized in that the torque feedback The device has a 'thrust wheel' and a sliding ring which resonate with each other, and has a set of rings to cooperate with the seat body to restrain a compression spring around the outer ring of the seat. The thrust wheel is fixedly connected to one of the outer edges of the seat. The torsion spring acts to limit its rotation angle. The sliding ring is restrained in the seat and can only move up and down. The transmission device is composed of a switching gear formed by an internal gear structure that meshes with two planetary gear sets. And, the outer periphery of the switching gear is shaped into a concave groove. By inserting several pins into the ring groove of the switching gear through the aforementioned collar, the switching gear can be restricted to be in the first extreme position while engaging two sets of planetary gear sets at the same time, or the switching gear can be restricted to be in the second The extreme position engages only its second planetary gear set. Therefore, if the load torque received by the aforementioned thrust wheel is insufficient to overcome the resistance of the torsion spring and the compression spring, the switching gear will be at

558475 V. Description of the invention (3) The first limit position, and simultaneously mesh the two sets of star gear sets and rotate synchronously with them. If the aforementioned thrust wheel receives a large enough load torque) to overcome the resistance of the torsion spring and the compression spring, it will rotate and push the sliding ring through its meshing inclined surface, so that the sliding ring depresses the switching gear to move , So that the switching gear is in the second extreme position and is engaged with a flange on the bottom of the seat body and cannot rotate. Therefore, the automatic transmission power transmission device of the present invention can automatically switch the speed reduction mechanism of the power transmission device when the load torque is increased or decreased to achieve automatic gear shifting and improve the mechanical efficiency of the power transmission device. "Effects on the prior art" Based on the aforementioned automatic transmission power transmission device of the present invention, it can achieve the following functions and effects: 1. With the automatic transmission power transmission device of the present invention, when the load torque increases or decreases , Can automatically switch the speed reduction mechanism of the power transmission device to achieve automatic shift gear. 2. Utilizing the automatic transmission function of the power transmission device of the present invention, the torque and rotation speed of the power input device can be controlled to maintain the region with lower power loss but higher mechanical efficiency. The purpose and function of the present invention will be made clearer by further explanation in conjunction with the following drawings. [Embodiment] The preferred embodiment of the present invention will be further described in detail with the accompanying drawings.

558475 V. Explanation of the invention (4) Μ = ί ^ 彳 土 t The first picture shows the power transmission w of the present invention, which can be shifted by one motion. The value is determined by a body (1), a torque feedback device (2), and It is composed of a transfer wheel device (3). The base body (1) is a cylindrical shell, and a hollow ΐ volume / reservoir is formed in the interior. (1 υ is formed on the periphery of the bottom by a number of convex guide grooves (12), the guide groove (12) The bottom part is formed with a convex t edge protruding from the surface of the shell (13) and a valley groove (11) with one end facing inward to form a slit penetrating through the thickness direction of the shell (1 4) And from the end surface, along the axial direction, several recessed grooves (15) are extended in the inner surface of the receiving groove (丨 i). The torque feedback device (2) includes a torsion spring (21), a thrust wheel (2 2), a sliding ring (2 3), a set of rings (2 4), and a compression spring (2 5). The outer surface of the thrust wheel (22) forms a number of trapezoidal portions (22a) protruding from the surface and the inner The surface forms an inner #wheel (22b). The outer surface of the thrust wheel (22) is recessed and passes through a slot (2 2 c) on both sides. The top surface of the sliding ring (2 3) forms several trapezoids. The concave-convex trapezoidal portion (23a) and a plurality of protruding ribs (23b) are formed on the outer surface, and each of the trapezoidal portions (23a) is respectively engaged with each of the trapezoidal portions (2a) of the thrust wheel (22). 'Each rib ( 2 3 b) is respectively matched with each groove (1 5) in the receiving groove (1 1) of the base body (1) so that the sliding ring (2 3) can be along the base of the base body (1) The inner surface of the receiving groove (Π) slides back and forth axially; the collar (2 4) is a C-shaped shell structure 'the top of the outer surface forms a number of flanges (2 4 a) protruding from the surface, and the sleeve The bottom of the ring (2 4) forms a plurality of pin bases (2 4 b) penetrating its shell and mating with the respective guide grooves (1 2) of the base body (丨), and each pin base (2 4 b) A pin (24c) can be installed respectively; the compression spring (25) is sleeved around the outer ring of the base (1),

558475 V. Description of the invention (5)-1 Fork made between the flange (丨 3) of the base body (1) and the collar: it will be displaced by the collar m) to generate the shaft "boss convex" The edge, = Z) is a structure capable of resisting torsion. One end forms an upper a) and the other end forms a lower fixed end (2 ib), so that Xishan can reach the slot of the thrust wheel (22). (22c) In the solid / can be inserted into the slot (14) of the base body (1) 'so the mouth can be lowered & (21b) The initial relative position of the base body (1). Beam ^ thrust wheel (22) And-cut the package Λ? Into the gear (31), a front reduction wheel (3),-move: C rear reduction wheel (34). The input gear (3) is i (32) is an external gear i: input-wheel The front reduction wheel of the stomach is fixedly connected-driving the tooth two 72 two) to the value of the planetary wheel (32a), and the other-the end star wheel (32a) must be the same as the rear reduction wheel (⑷, each line wheel (2, because; ^ The gear (31) and the internal teeth of the thrust wheel (22) 3 :), the internal gear structure, an indentation is formed around the outer ring: knife change: each of the above-mentioned ring m) of the wheel-insert the tip face through The groove (33b) '(12) on Table 2 is engaged with the groove (24c) through the guide of the seat (1). The grooves (11) at the bottom end of the groove 'σ' (33b) can be engaged with the housing (1) container structure, which "" 上 "a); the rear reduction wheel series-disc: star wheel (34a) May = power output device (not shown in the figure), and each row switching gear (33 ^^ δ the driving gear (32b) of the front reduction wheel (32) and the above-mentioned book \ ^ * thus forms a planetary gear Speed reduction mechanism of the present invention

Page 9 558475 V. Description of the invention (6) The accommodating groove (1 1) is sequentially installed in the transmission device (3) and the torque feedback device (2). In its initial condition, the collar (2 4) is subjected to the The spring force of the compression spring (2 5) is “down”, and its insert (24c) will be at the highest position of the guide groove (丨 2) of the receiving groove (1 1). At the same time, through the collar (24) The insertion pin (24c) constrains the ring groove (3 3 a) of the switching spring (3 3), so that the switching gear (3 3) is also at the top position of the switch. Furthermore, in the initial state, the trapezoidal part (M good system sprays the trapezoidal part (23a) of the slip ring (23) in the thrust wheel (22), and the thrust wheel (22) 1 is meaningless忒 The torsion elastic yellow (2 1) is determined, and the ^ direction f of the sliding ring (2 3) is determined by the restriction of the switching gear (3 3). The third and fourth pictures show that when When the power transmission device is operating, under the condition of total force, the input in the transmission device 嵩: 之 The torque of the front reduction wheel (32), so that the inner of the front reduction wheel: ί = 323) will work equivalent The reaction force is on the thrust wheel (22 1 thrust =), so that the thrust wheel (22) is generated to rotate. However, the rotation of the torsion spring (21) and the compression spring (25) must be overcome at six (22). The compression spring (25) reacts with the occurrence of elastic force, 乂) ΐ L force = 2) the inclined surface of the trapezoidal part (22a) pushes the inclined surface of the groove 丨 of the slide, so that the sliding ring (23) passes through the Seat body: the ring i Λ wheel S) moves, and the switching gear (33) passes through the pin (24c) which will press the compression spring, so the ring (2 ^ down 'until the front minus Mystery: In this case, a certain amount of time, Xi 7) The torque value of Yu Rong thrust wheel (22) reaches the bottom of the trapezoidal part (22a) of ox force wheel (22) will contact

Page 10 V. Description of the invention (7) to the trapezoidal part (2 angle position of the sliding ring (23), and the switching gear (3,, the plane of the knitting, and the groove (3 3 b) at the bottom of the maximum rotation) The card player now Λθ reaches the bottom limit position so that 奚 (11a). ^ _ (1) The flange at the bottom of the receiving groove (1 1) is a torsion spring that switches the torsional coefficient of elasticity of the reduction gear mechanism (2η = , Size, can be selected by having the power of a suitable drilling machine KG speed = force transmission clothes can be used as a kind of electrical output, when the front reduction wheel is used to make holes, if a small torque is provided to swallow the taxi… 1 Z) The torque acting on the thrust wheel (2 2) is not enough. The torque torque is not yellow (2 1) and the compression bomb (2 5) 抿 ^, μ ,, Μ The power wheel (22) does not rotate, (Dongshixi, Code?), So it is time to push forward, you can cut off the joy, the moon moving frame (23) and the switching gear (33) are at the beginning, and the second round (33) will ring at the same time. The front reduction wheel (32) and the rear reduction wheel 2) and 彳 Ϊ (34a) are combined, and the switching gear (33) rotates synchronously with the front reduction wheel (32) and the rear reduction wheel (34). , This The relationship will be in the area near the maximum value of the efficiency curve; large = force output, the input gear (3 丨) will gradually increase the input torque, and :: the speed wheel acts on the -thrust wheel (22) The torque is sufficient to overcome this torque. The resistance of the Helmet Shock Yellow (2 5), so the thrust wheel (2 2) will increase the torque and rotate, and finally the sliding ring (23) and the switching gear f3) are in the lowest limit position. The switching gear (33) will be disengaged from the front change wheel. (3 2) but the planetary gear (3 4 a) 'of the rear reduction wheel (3 4) is still attached and the seven-edge w wheel (3 3) will be The groove (3 3 b) cannot be rotated due to the engagement of the bottom of the accommodating groove (1 丨) of the base body (1 丨) at f 1 1 a). At this time, the relationship between the torque and the speed provided will fan and the maximum value of the efficiency curve. In the vicinity of it. 558475 V. Description of the invention (8) The above is only used to explain the preferred embodiments of the present invention, and is not intended to limit the present invention in any form, is it? Anyone who makes it under the same creative spirit Any modification or change related to the present invention should still be included in the scope of the present invention.

Page 558475 Brief description of the drawings The first diagram is a three-dimensional exploded view showing the automatic transmission power transmission device of the present invention; '...: The second picture is a sectional view showing the seat body of the automatic transmission power transmission device of the present invention The third figure is a cross-sectional view showing the seat body at the second speed of the automatic transmission power transmission device of the present invention; the fourth figure is the thrust wheel meshing with the sliding ring in the automatic transmission power transmission device of the present invention Side view.

[Description of component symbols] Seat body (1) Receiving groove (11) Flange (11 a) Guide groove (12) Flange (1 3) Slot (1 4) Groove (1 5)

Torque feedback device (2) Torsion spring (2 1) Upper fixed end (21a) Lower fixed end (2 1 b) Thrust wheel (2 2) Trapezoidal part (2 2 a)

Page 13 558475

The diagram briefly explains the internal gear (22b), the slot (2 2 c), the sliding ring (2 3), the trapezoidal part (2 3 a), the rib (2 3 b), the collar (24), and the flange (24a). (24b) Pin (24c) Compression spring (2 5) Transmission device (3) Input gear (3 1) Front reduction wheel (3 2) Planet gear (32a) Drive gear (32b) Switch gear (3 3) Ring groove (33a) Notch (33b) Rear reduction wheel (3 4) Planetary gear (34a) Output gear (34b)

Page 14

Claims (1)

558475 VI. Application for patent scope 1. An automatic transmission power transmission device is mainly composed of a hollow casing forming a transmission device and a torque return device installed in the body, and the characteristics are: The shell of the body has a plurality of guide grooves penetrating in the thickness direction, a flange is formed on the inner bottom and the outer bottom, respectively, and the top surface of the body extends along the axial direction downwards and a plurality of recessed grooves on the inner surface; The transmission device is composed of a switching gear formed by an internal gear structure meshing with a first planetary gear set and a second planetary gear set. The first planetary gear set has an external gear, and the switching gear is surrounded by an outer ring. A concave groove is formed, and a number of grooves are formed on the outer bottom to match the flange on the bottom of the body. The torque feedback device has a thrust wheel and a sliding ring which are engaged with each other by forming two end surfaces formed by several inclined surfaces. And has a set of rings matching the flange of the outer surface of the seat to restrain a compression spring around the outer ring of the seat, and the outer surface of the sliding ring forms a plurality of grooves that can fit into the seat body. Ribs, so that the sliding ring can reciprocate up and down along each groove, the collar is equipped with a number of pins that can be inserted into each guide groove of the base body to be limited by it, and the pins will engage the aforementioned switch In the ring groove of the gear, the switching gear is engaged in the first limit position while engaging the first planetary gear set and the second planetary gear set, or the switching gear is restricted in the second limit position and only engages the The second planetary gear set; when the aforementioned thrust wheel is rotated, the sliding ring will be pushed through the meshing inclined surface, the sliding ring will depress the switching gear and drive the collar to press the compression spring to generate an axial Resistance; when the aforementioned switching gear is in the first extreme position, it will interact with the first planet Page 15 558475 6. The patented range-type gear set and the second planetary gear set rotate synchronously; when the aforementioned switching gear is in the second extreme position, the groove at the true bottom will receive the convexity of the bottom of the body The edge engages and cannot rotate. 2. An automatic transmission power transmission device according to item 1 of the scope of patent application, wherein the torque feedback device has a torsion spring, one end of which is fixed to the outer edge of a thrust wheel and the other end of which is fixed to the seat body. edge. Page 16