WO2013094444A1

WO2013094444A1 - Dog walking aid

Info

Publication number: WO2013094444A1
Application number: PCT/JP2012/081893
Authority: WO
Inventors: 文人大橋; 秀保秋吉; 純一郎清水; 廣瀬　賢一; 誉史酒井
Original assignee: 公立大学法人大阪府立大学; 株式会社モリック; 株式会社酒井工業
Priority date: 2011-12-24
Filing date: 2012-12-10
Publication date: 2013-06-27
Also published as: JP4979834B1; JP2013132217A

Abstract

Provided is a simple and low cost dog walking aid for rehabilitation of dogs with a hindrance to walking because of an impairment such as hip joint dislocation, excess obesity, and the like but with good prospects for recovery of walking ability by suitable exercise and the like, said walking aid reducing the burden on a dog by suitably supporting the body weight being borne on its four legs, particularly the rear legs, while maintaining a natural walking state as much as possible so as to encourage voluntary walking exercise. The walking aid can be adjusted conveniently to any weight retention force according to the location and extent of the impediment or disease of the dog. The dog walking aid comprises: a main body frame formed from a horizontal member and four support legs having pivotable wheels; four cables that latch to a harness worn on the body of the dog and suspend the body of the dog at the shoulder regions and the pelvic region; and a constant load mechanism that holds the cables by a retraction force from a mainspring. The retraction force of the constant load mechanism can be set freely; therefore, the suspension force can be adjusted freely according to the weight and extent of impediment of the dog.

Description

Dog walking aid

The present invention relates to a walking aid for the purpose of rehabilitation of a dog, which is used by a dog having a disability in independent walking and assists the walking, and supports the healing improvement of the disability through active walking training.

Causes of gait disturbance in dogs include muscle weakness and skeletal weakness due to aging, as in humans, as well as sprains, fractures, ligament tears, joint dislocations, arthritis, spinal cord injury (Wobbler syndrome), bone tumors, and intervertebral discs. Diseases such as hernias, leg-pertus perces disease, early growth plate obstruction, joint dysplasia (hip joints and elbow joints) that are highly related to genetic factors are known. In particular, large dogs and medium-sized dogs often have progressive arthritis due to hip subluxation due to dysplasia of the joints, resulting in lameness of the hind limbs (scratching the legs), and in the worst case, they cannot walk. In addition, it is known that the burden on the legs and hips due to obesity induces joint dysplasia and tends to cause arthritis.

If severe arthritis develops, complete recovery is difficult and early detection and treatment is important. Treatment requires medication, diet, surgery in severe cases, and intense exercise is contraindicated, while moderate exercise is essential for recovery. Especially in dogs, absolute rest is a great mental stress for the dogs themselves, and their accumulation may lead to delayed recovery and worsening of symptoms. For this reason, humans can hang a harness attached to the dog's body by hand and walk while floating the latter half of the body, or use a dog wheelchair to walk with no weight on the hind limbs. A rehabilitation method called “therapy” has been carried out. In particular, for the latter wheelchair for dogs, various types have been proposed, including those described in Patent Documents 1 to 5, for example.
JP 2005-31370 A JP 2006-314226 A Japanese Patent Laid-Open No. 2003-9704 JP 2008-29302 A Utility Model Registration No. 3145962

Among these prior arts, the dog wheelchairs according to Patent Document 1 and Patent Document 2 both support the dog's torso from below with a harness provided on a wheeled frame, and the weight of the weight applied to the hind limb while the front limb is normally grounded. By exempting or reducing the load, the dog can be freely walked mainly by its forelimbs. For dogs that have lost their hindlimb walking ability, it is appropriate to use a dog wheelchair with such a configuration, and a commercially available dog wheelchair should hold the hindlimb that is no longer needed without being grounded. Some have a hind-limb harness for this purpose. Further, in the pet wheelchair described in Patent Document 1, the forward movement when the dog walks with only the forelimb is converted into the reciprocating movement of the holding part of the hindlimb through the crank while holding the hindlimb hollow. Sometimes it has a mechanism to move the cramped hind limbs by forcibly moving them.

The dog wheelchair, which simply holds the latter half of the dog, is used as a substitute for life hind limbs in dogs that cannot be expected to recover the walking ability of the hind limbs, so it does not impose a burden on the hind limbs. A solid and light structure is sufficient. On the other hand, when aiming at the rehabilitation of a dog that can be expected to recover the walking ability of the hind limbs, the hind limbs are actually used rather than being hollow and forcing the hind limbs to simulate artificial movements like the pet wheelchair described in Patent Document 1. It is more desirable to appropriately reduce the weight applied to the hind limbs while grounding and promoting spontaneous walking.

In addition, all of these prior arts are configured to support the weight of the dog upward in the abdomen, but in this case, especially in large dogs and dogs that are overweight, etc. In addition to being in a state of being squeezed, there are significant restrictions on the movement of the limbs. On the other hand, if you wear a harness that holds the shoulder part in the forelimbs of the dog and a pelvis part in the hind limbs, and hold the weight in the form of hanging the dog's body from above at each location It is more suitable for the purpose of rehabilitation because it prevents the internal pressure and increases the freedom of movement of the extremities.

On the other hand, the walking aids described in Patent Documents 3 to 5 have a structure in which a member for holding the dog's torso is attached to a four-legged four-wheel cart-type structure, and the dog's body is suspended. ing. These are all distributed to support the weight of the dog over the entire torso and reduce the burden on the extremities. In particular, the invention described in Patent Document 4 and the device described in Patent Document 5 are mounted on the dog's torso. By using an elastic member for the supporter or the holding body, it is considered to exert a buffering effect so that the vertical movement of the structure during walking is not directly transmitted to the dog's body.

However, these prior arts have the effect of buffering the shaking and vibration of the cart-type structure during walking and assisting stable walking, but only suspend the dog's body at a preset position. Therefore, it is difficult to appropriately set the optimal suspension force for each forelimb, hindlimb or leg according to the site and degree of the disorder or disease of the dog. In addition, since it is a walking aid for rehabilitation purposes, it is natural that a constant load that is moderately reduced is applied to the limbs of the dog regardless of its posture and walking state, which is effective for recovery. However, a suspension mechanism using an elastic body inevitably causes a reaction due to expansion and contraction caused by the movement of the dog, so there is a problem that the load during walking is not physically constant regardless of the stationary state.

For dogs whose hindlimb walking ability is impaired due to hip dislocation, etc., but whose walking ability is expected to be restored by appropriate rehabilitation such as exercise, or dogs whose normal walking is burdened on their extremities due to excessive obesity In parallel with treatments such as therapy and medication, training that encourages spontaneous walking while reducing the burden by appropriately holding the weight on the extremities, especially the hind limbs, is effective. In that case, it is desirable for the dog to keep its gait as natural as possible by grounding the paws of the limbs as usual. The weight applied to the limbs can be set arbitrarily to the extent that the dog does not feel difficult to walk and the effect of recovery and maintenance of muscle strength can be expected, regardless of the dog's posture and walking state. It is desirable that can be made steady. Furthermore, it is more desirable to enable fine adjustment so as to gradually increase the weight load according to the degree of recovery of walking ability due to the progress of rehabilitation.

Also, as mentioned above, in order to enhance the rehabilitation effect by promoting voluntary walking while ensuring freedom of movement of the limbs while preventing the burden on the internal organs, the dog's body is pushed upward from the abdomen. A system in which weight is suspended from the shoulder and pelvis of the dog from above is preferable to the system in which the body is held in shape. Furthermore, it is more desirable to be able to individually adjust the weight load distribution to the forelimbs, hind limbs, and left and right legs according to the body shape of the dog and the site having the disorder.

The present invention does not envisage conventional dog wheelchairs or cart-type walking aids using elastic bodies, or solves the above-mentioned problems that are difficult to cope with. The purpose is to provide a walking aid for dogs that can be applied to dogs with a wide range of flexibility and can be expected to be more effective in rehabilitation to restore walking ability at a low cost. It is.

In order to achieve the above object, a walking aid for dogs according to claim 1 of the present invention comprises a body frame comprising four support legs and a substantially rectangular horizontal member, and a lower end of each of the support legs. A wheel that is disposed, one end that engages with a harness that is attached to the body of a dog having an obstacle to self-sustained walking, and a rope that suspends the body at the shoulder and pelvis of the dog; A constant load mechanism that is disposed on a horizontal member and lifts the other end of the rope with a retractable force that can be arbitrarily set; and a walking aid for dogs, wherein the rope by the constant load mechanism The retraction force of the dog is adjusted according to the weight of the dog and the degree of obstacle, and assists the dog's independent walking.

The above-mentioned main body frame is a so-called “wagon type” with four legs and four wheels in appearance, and has four points on a harness that is attached to a dog with four ropes suspended from a constant load mechanism attached to the upper horizontal member. Engage with and suspend. The support legs and the horizontal members of the main body frame are made of lightweight and robust materials, and for example, aluminum pipes are suitable. The horizontal member may be a plate material such as a wagon top, but may be constituted only by a frame made of a pipe material that can install the constant load mechanism at an appropriate position. The wheel is of a caster type and is attached to the lower end of the support leg directly or via a connecting member so that the wheel can be rotated at any angle according to the moving direction of the main body frame. The rope is a flexible and strong wire that can withstand the torsion caused by the weight and exercise of a large dog, and can withstand repeated winding with a constant load mechanism. For example, a steel wire coated with nylon resin is suitable. It is. The harness may be a commercially available product as long as it can hold the shoulder and pelvis from above at the left and right when the dog's body is suspended by the four ropes. It is preferable that a belt having a mechanism such as a metal fitting that can be easily attached and detached is attached to the holding point.

On the other hand, the constant load mechanism is a main configuration for enabling the suspension force to be adjusted according to the weight of the dog and the degree of obstacle, and its principle and structure are not particularly limited. By arbitrarily setting the retraction force, the predetermined retraction force set at all times is maintained while the cord is extended or retracted appropriately according to changes in the ground height and position of the holding point on the harness due to the posture and movement of the dog. It has the function to do.

For example, in a general coil spring, the output fluctuates according to the stroke, but a metal constant load spring is mounted between two winding shafts in the form of winding them in the opposite direction of rotation. In a wire retractable spring that uses a wire or other type of wire to be wound by rotation, a constant output, that is, a retracting force, is maintained regardless of whether the wire is pulled out or pushed in, or its stroke is long or short. Moreover, since the user can arbitrarily set the pulling force within a predetermined range, it is suitable as a constant load mechanism used in the present invention.

Note that the distribution ratio of the suspension force to the dog's forelimbs and hind limbs and the magnitude of the suspension force relative to body weight are items that should be set individually depending on the obesity level of the subject dog and the site / degree of injury. There is no limitation. By the way,
As a result of an experiment conducted by applying the prototype according to the present invention in which the applicant has installed the four spring-type constant load mechanisms to a large dog having a hip subluxation disorder in the hind limbs, When the dog's leg paws are fully grounded and the load is set to 60% of the body weight, and the weight distribution ratio to the forelimbs and hind limbs is set to 2: 1, the dog is spontaneous and smooth. It was able to walk and the best effect was seen.

Next, the walking aid for dogs according to claim 2 of the present invention is the walking aid for dogs according to claim 1, wherein the wheels can freely be oriented in the two front wheels. The rear two wheels are fixed in the front-rear direction of the main body frame.

As in the first aspect of the invention, even when all four wheels can be turned freely at an angle, it is possible to assist the walking of the dog. The trunk of the dog seen from above has a slight phase difference in the left and right directions with respect to the direction of travel. I will walk while swinging. For this reason, if the rear wheels are allowed to turn freely, the effect that the rear half of the main body frame of the walking aid itself is swung to the left and right when the paw contact pressure of the hind limbs is considerably small, the stability in the direction of travel is descend. Therefore, by making it possible to turn only the front two wheels and fixing the rear two wheels in the front-rear direction of the main body frame, it is possible to improve the stability of walking especially when the weight distribution ratio to the hind limbs is reduced. It has been confirmed by the experiment.

Next, a walking aid for dogs according to claim 3 of the present invention is the walking aid for dogs according to either claim 1 or claim 2, wherein the body frame has two pieces. A front wheel frame having a substantially inverted U-shaped front wheel frame and a rear wheel frame formed by connecting the tops of the support legs with horizontal girders is combined into a substantially X shape in a side view via a first connection shaft at the center of each support leg. One end of the horizontal member is attached via the second connecting shaft near the top of the support leg, and the other end is supported by the horizontal girder of the rear wheel frame. When not in use, the horizontal member is centered on the second connecting shaft. The rear wheel frame is folded between the support legs of the rear wheel frame, and the rear wheel frame itself can be folded between the support legs of the front wheel frame around the first connection shaft.

The walking aid according to the present invention described in claim 1 or 2 has a so-called wagon-type quadruped body frame, which is a considerable size particularly for large dogs, except when it is in use. Bulky and disturbing. If the main body frame is configured as claimed in claim 3, the entire body frame can be folded along the front-rear direction when not in use, which is convenient for storage.

The walking aid for dogs according to the present invention does not provide a wheelchair for the rear body as a substitute for the hind limbs to dogs that have completely lost the walking function of the hind limbs. Although there are dogs whose walking ability is expected to be restored by rehabilitation with appropriate exercise after dieting, medication, or, in some cases, treatment by surgery, or normal limbs due to excessive obesity It can be applied to dogs that are burdened by the above, and it is possible to accelerate recovery by accelerating spontaneous walking movement.

In the present invention, the abdomen is held from the bottom to the top in order to exempt or reduce the weight load on the extremities by attaching the harness to the dog and suspending the shoulder and pelvis from a total of four points from above. Compared to conventional dog wheelchairs, there is less pressure on the dog's built-in, and the freedom of movement of the limbs is high, so there is less burden on the dog's body.

In the case of the conventional wheelchair method, since the structure with wheels is directly attached to the dog's body, the dog feels a sense of foreign matter and discomfort and takes time to acclimatize, but the suspension method is adopted in the present invention. Since the structure and the dog's body are indirectly engaged with the rope and harness, the foreign object feeling and the uncomfortable feeling for the dog are relatively small and can be easily adapted.

In addition, according to the present invention, the constant load mechanism can constantly give a weight load that is optimally reduced for rehabilitation according to the degree of disability or symptom regardless of the posture or movement of the dog. In addition, it is possible to increase the rehabilitation efficiency because it is possible to change the weight load gradually according to the degree of recovery of obstacles and symptoms of the dog by arbitrarily setting the pulling force of the rope by the constant load mechanism .

In addition, dogs take a posture of raising one leg or bending their hips when defecation and urination, but in the conventional wheelchair system, the dog's posture is fixed, so the device is released before excretion Or
Or it will force excretion in a fixed posture, which impairs comfort for the dog and ease of cleaning after excretion. On the other hand, the constant load mechanism that constitutes the present invention can adjust the pull-in force of the constant-load spring at any time and can add a mechanism for releasing the pull-in force, so that the dog tries to excrete. In some cases, the dog's original excretion posture can be obtained by reducing or disabling the suspension force with a single switch.

In the case of the conventional wheelchair system, it is necessary to prepare wheelchairs of various sizes and types depending on the dog type, the body size / type of the dog, and the content and extent of the disorder or symptom. While it may be necessary to make a maid, the present invention is a single walking aid if a body frame corresponding to the size of a rough dog body such as a large dog, a medium dog, or a small dog is prepared. Therefore, it can be applied to various dog breeds or dogs with disabilities and symptoms, and is highly versatile, resulting in cost reduction.

Further, the walking aid for dogs according to the present invention can be realized by a simple structure in which a constant load mechanism for pulling a cord engaging with a harness is attached to a four-legged four-wheel body frame constituted by a pipe. In addition, since a commercially available off-the-shelf product can be applied, it is possible to provide an extremely lightweight and robust walking aid at a low cost. Furthermore, by making the main body frame foldable, the entire body can be folded along the front-rear direction when not in use, which is convenient for storage.

It is a side view of the walking aid concerning a first embodiment of the present invention. It is a front view of the walking aid concerning a first embodiment of the present invention. It is a top view of the walking aid concerning a first embodiment of the present invention. It is a side view of the walking aid which concerns on 2nd embodiment of this invention. It is a front view of the walking aid concerning a second embodiment of the present invention. It is a top view of the walking aid concerning a second embodiment of the present invention. It is a side view which shows the state which folded the walking aid which concerns on 2nd embodiment of this invention. It is a side view of the walking aid which concerns on 3rd embodiment of this invention. It is a front view of the walking aid concerning a third embodiment of the present invention. It is a top view of the walking aid concerning a third embodiment of the present invention.

(First embodiment)
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 3 are three views of a walking aid for dogs according to a first embodiment of the present invention. 1st Embodiment has shown the walking aid of the fixed structure whose main body frame is a "wagon type" based on invention of Claim 1 and 2. As shown in FIG.

The main body frame is formed by forming a pair of main structural members 1 in which one pipe member is bent into an inverted U-shape and the two support legs 10 and the front and rear girders 11 are integrally formed into a substantially rectangular frame. It connects to the horizontal member 20 in the position of the said front-and-back girder 11, and is comprised in the shape of a 4-legged wagon that straddles the body of the dog. The front and rear support legs 10 are connected to each other by a vertical reinforcing material 12, and the left and right support legs 10 are connected to each other by a horizontal reinforcing material 13, and wheels 30 are respectively attached to the lower ends of the four support legs. The wheel 30 is a caster type that can turn all four wheels at any angle, but the turning angle can be manually locked. During normal use, the front two wheels are not locked and only the rear two wheels are forward and backward. It shall be used after being locked to. A handle 60 is attached to the rear upper part of the main body frame for a human to hold the main body frame and guide the traveling direction of the dog during rehabilitation.

Inside the horizontal member 20, two plate members 51 on the front limb side and the hind limb side are fixed at the front and rear positions, and a total of four constant load mechanisms 50 are installed on the upper surface of the plate member 51. Yes. The constant load mechanism 50 has a spring type constant load spring (not shown) inside, and the constant load spring winds up the rope 40 with a predetermined pulling force and suspends the dog's body.

A harness 70 is attached to the dog's body. The harness 70 has belts 71 having contact points at two places on the shoulders of the dog and two places on the left and right sides of the waist, and the ropes 40 are engaged with the upper ends of the belts 71. The harness 70 may be a commercial product, but when the dog's body is suspended by the rope 40, the weight of the front half of the dog is held at the shoulder and the weight of the back half is held at the pelvis. Select the one that will be the shape.

When using the walking aid of the first embodiment, the user placed the main body frame 1 at a position straddling the body of the dog wearing the harness 70 and provided the plate member 51 from the lower part of the constant load mechanism 50. The four ropes 40 hanging downward through the holes are engaged with the upper ends of the four belts 71. Then, let the dog take a walking posture and operate the pull-in force adjustment switches (not shown) of the four constant load mechanisms 50 according to the symptoms of limb disorders and diseases while supporting the dog's body by hand. Set the force appropriately and start rehabilitation walking. Observe the walking state of the dog, and if there is an excess or deficiency in the suspension force, stop walking and resume walking after appropriately adjusting the pull-in force of the constant load mechanism.

If the dog stops and wants to excrete while walking, operate the pull-in force adjustment switch of the two constant load mechanisms 50 on the hind limb side as necessary to excrete the suspension force of the lower body. I will adjust it to an easy level. When a tired dog is to be rested, the pulling force of all constant load mechanisms 50 is adjusted to minimize the suspension force so that the dog can take a prone resting posture.

(Second embodiment)
4 to 6 are three views of the dog walking aid according to the second embodiment of the present invention, and FIG. 7 is a side view showing the folded state of the walking aid. In the second embodiment, the main body frame is constituted by an outer frame 14 and an inner frame 15 made of an inverted U-shaped tube material directed in the traveling direction, and a horizontal member 20 in which the tube material is formed into a substantially rectangular frame. The outer frame 14 and the inner frame 15 are connected in a substantially X shape when viewed from the side by the first connection shaft 16, and are turned inside the outer frame 14 by rotating around the first connection shaft 16. The substantially X-shape can be folded so that the frame 15 can enter. The outer frame 14 and the inner frame 15 are each provided with a locking shaft 19a and a locking shaft 19b below the first connection shaft 16, respectively, and both the locking shafts are connected by a locking member 18, whereby the main body The frame 1 is locked in a substantially X-shaped state.

A front wheel 31 is attached to the two support legs of the outer frame 14 and a rear wheel 32 is attached to the two support legs of the inner frame 15 via

attachment members

33 and 34, respectively. , 34 can be fixed by adjusting the angle with respect to the support leg using the

wheel mounting shafts

35a, 35b as rotation axes, respectively, and fixed so that the mounting

members

33, 34 are vertical when the main body frame is unfolded, and when folded. The mounting

members

33 and 34 are fixed so as to be parallel to the support legs.

Further, the rear end of the horizontal member 20 is attached to the upper portion of the outer frame 14 via the second connection shaft 17 so as to be rotatable, and the second connection shaft 17 itself can be slid on the side surface of the horizontal member 20. A groove is provided. Therefore, when the main body frame 1 is unfolded, the horizontal member 20 is held horizontally by the second connecting shaft 17 while the front end of the horizontal member 20 is placed on the upper cross beam portion of the inner frame 15. On the other hand, when the main body frame 1 is folded, the horizontal member 20 can be folded so as to be housed inside the outer frame 14 by sliding the horizontal member 20 around the second connecting shaft 17. The arrangement and attachment method of the constant load mechanism 50 are the same as those of the walking aid according to the first embodiment.

With the above-described configuration, the walking aid according to the second embodiment can expand and fix the main body frame 1 in a substantially X shape when in use, and fold the main body frame 1 when not in use so that the dimensions in the front-rear direction are increased. It can be reduced so that it is not bulky.

(Third embodiment)
8 to 10 are three views of the walking aid for dogs according to the third embodiment of the present invention. In the walking aid in the third embodiment, the structure of the main body frame 1 is basically the same as that in the first embodiment, but the constant load mechanism 50 is provided at the center on the two plate members 21 attached to the horizontal member 20. There are two in total, one for each, with the front half of the dog suspended from the front one and the rear half suspended from the rear one. That is, the third embodiment can be said to be a simplified version of the first embodiment.

One distribution mechanism 52 and one pulley 53 on each of the right and left sides are provided on the back surface of the plate member 51 below the constant load mechanism 50. The distribution mechanism 52 distributes and transmits the movement of one line derived from the constant load mechanism 50 to the two lines 40, and each line 40 changes its direction downward via a pulley 53. After that, it is engaged from above with both ends of a girder 72 provided in the back hollow of the dog. On the other hand, the belt 71 of the harness 70 attached to the dog's body is engaged with both ends of the girder 72 from below. At the time of use, the pulling force of the constant load mechanism 50 is transmitted to the harness 70 via the front and rear girder 72, and the girder 72 is lifted and lowered in accordance with the posture and movement of the dog.

With this configuration, the front and rear constant load mechanisms 50 are independently responsible for hanging the dog's front and rear bodies one by one, so the number of constant load mechanisms 50 is smaller than in the first embodiment. You can do it in half. In this case, the pull-in force of each constant load mechanism 50 needs to be doubled compared to the first embodiment, and each of the two stubs 40 in the front-rear direction makes the dog's body with equal suspension force. The left and right suspension forces cannot be adjusted individually for support. On the other hand, in the third embodiment, the number of constant load mechanisms 50 is halved, and the number of places where a human should operate the pulling force is also halved. Therefore, the cost can be reduced and the operation becomes simpler. The configuration of the third embodiment can also be applied to the folding walking aid according to the second embodiment.

The dog walking aid according to the present invention has been described above with reference to the embodiment. However, the present invention is not limited to the above embodiment, and within the scope of the purpose of the improvement or the technical idea of the present invention. Improvements or modifications are possible and are within the scope of the invention.

DESCRIPTION OF SYMBOLS 1 Main body frame 10 Support leg 11 Front-rear girder 12 Vertical reinforcement 13

Horizontal reinforcement

13a, 13b Lateral reinforcement (2nd embodiment)
14 Outer frame (second embodiment)
15 Inner frame (second embodiment)
16 First connecting shaft (second embodiment)
17 Second connecting shaft (second embodiment)
18 Locking member (second embodiment)
19a, 19b Locking shaft (second embodiment)
20 Horizontal member 30 Wheel 31 Front wheel (second embodiment)
32 Rear wheel (second embodiment)
33, 34 Mounting member (second embodiment)
35a, 35b Wheel mounting shaft (second embodiment)
40 Wires
50 constant load mechanism 51 plate 52 distribution mechanism (third embodiment)
53 pulley (third embodiment)
60 Handle 61 Handle mounting member 70 Harness 71 Belt 72 Girder (third embodiment)

Claims

Engage with a body frame consisting of four support legs and a substantially rectangular horizontal member, wheels disposed at each lower end of the support legs, and a harness attached to the body of a dog having an obstacle in self-supporting walking. A rope for suspending the body between the shoulder and pelvis of the dog and a constant for lifting the other end of the rope disposed on the horizontal member of the main body frame with a retractable force that can be arbitrarily set. A walking assist device for a dog having a load mechanism, wherein the pulling force of the rope by the constant load mechanism is adjusted according to the weight of the dog and the degree of obstacle, and assists the dog's independent walking Characteristic walking aid for dogs.
2. The walking aid for dogs according to claim 1, wherein the front wheels are capable of turning at an arbitrary angle with respect to the front two wheels, and the rear two wheels are fixed in the front-rear direction of the main body frame. Ingredients.
The main body frame has a substantially inverted U-shaped front wheel frame and a rear wheel frame formed by connecting the tops of two support legs with horizontal girders. The horizontal member is attached to one end of the front wheel frame via the second connecting shaft near the top of the support leg of the front wheel frame, and the other end is supported by the horizontal girder of the rear wheel frame. And the rear wheel frame itself is foldable between the support legs of the front wheel frame around the first connection axis. The walking aid for dogs according to claim 1 or 2.